Patent Publication Number: US-2019184090-A1

Title: Syringe package

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This is a bypass continuation of PCT Application No. PCT/JP2017/029864, filed on Aug. 22, 2017, which claims priority to Japanese Application Nos. 2016-162844, 2016-162888, and 2016-162898, all filed on Aug. 23, 2016. The contents of these applications are hereby incorporated by reference in their entireties. 
    
    
     BACKGROUND 
     The present disclosure relates to a syringe package that includes a prefilled syringe system filled with a drug in advance. 
     For example, WO 2012/117837 discloses a prefilled syringe system that includes a gasket and a plunger that are spaced from each other when not in use. The prefilled syringe system includes a space maintaining unit for maintaining the space between the gasket and the plunger. 
     SUMMARY 
     While being transported, a prefilled syringe system is housed in a package body. At this time, it is necessary to inhibit a plunger from contacting a gasket (to inhibit the gasket from being pressed by the plunger) due to vibration during transportation. The prefilled syringe system disclosed in WO 2012/117837 is provided with the space maintaining unit so that the plunger is inhibited from contacting the gasket due to vibration during transportation. This arrangement may be a cause of complexity of the prefilled syringe system. 
     Certain embodiments of the present invention have been developed in light of such a problem, and an object thereof is to provide a syringe package that enables a prefilled syringe system with a simple arrangement and that inhibits a gasket from being pressed by a plunger during transportation. 
     In one embodiment, a syringe package is provided with a prefilled syringe system that includes a prefilled syringe including a syringe body that is filled with a drug in advance and in which a gasket and a plunger are not connected to each other when the syringe package is not in use, wherein the syringe package includes: a package body that houses the prefilled syringe; and a support disposed inside the package body and configured to support the prefilled syringe, wherein the support includes a displacement regulation unit configured to regulate relative displacement of the syringe body and the plunger in a direction in which the gasket and the plunger approach each other. 
     According to such an arrangement, the package body includes the displacement regulation unit. Accordingly, it is possible to simplify the arrangement of the prefilled syringe system and to inhibit the gasket from being pressed by the plunger during transportation of the syringe package. 
     In one aspect of the syringe package, the gasket and the plunger are spaced from each other. 
     Such an arrangement further inhibits the gasket from being pressed by the plunger during transportation of the syringe package. 
     In one aspect of the syringe package, the plunger has a base end portion provided with a plunger flange, and the displacement regulation unit is disposed between the syringe body and the plunger flange. 
     Such an arrangement allows the displacement regulation unit to effectively inhibit displacement of the syringe body toward a base end (the plunger flange) with respect to the plunger and displacement of the plunger toward a leading end (the gasket) with respect to the syringe body. 
     In one aspect of the syringe package, the displacement regulation unit is provided with a groove into which at least a part of the plunger is inserted. 
     Such an arrangement inhibits separation of the displacement regulation unit from between the syringe body and the plunger flange due to vibration during transportation. 
     In one aspect of the syringe package, the support includes a base that holds a position of the displacement regulation unit inside the package body. 
     Such an arrangement inhibits displacement of the displacement regulation unit with respect to the package body. 
     In one aspect of the syringe package, the support includes a positional shift regulation unit that contacts the syringe body and regulates displacement of the syringe body in a direction intersecting with an axis of the syringe body. 
     Such an arrangement further inhibits separation of the displacement regulation unit from between the syringe body and the plunger flange due to vibration during transportation. 
     In one aspect of the syringe package, the positional shift regulation unit locks the syringe body. 
     With a simple arrangement, such an arrangement more effectively inhibits separation of the displacement regulation unit from between the syringe body and the plunger flange due to vibration during transportation. 
     In one aspect of the syringe package, the positional shift regulation unit is provided on the base. 
     Such an arrangement inhibits displacement of the positional shift regulation unit with respect to the package body. 
     In one aspect of the syringe package, the support includes a leading end regulation unit that contacts the syringe body and regulates displacement of the syringe body toward a leading end of the syringe body. 
     Such an arrangement enables the leading end regulation unit to further inhibit a positional shift of the syringe body. 
     In one aspect of the syringe package, the leading end regulation unit is provided on the base. 
     Such an arrangement inhibits displacement of the leading end regulation unit with respect to the package body. 
     In one aspect of the syringe package, the prefilled syringe system includes: a needle package including a needle unit that enables puncture of a living body and a needle unit case that houses the needle unit; and the prefilled syringe including a connection to which the needle unit is connected, the syringe body, and the plunger, wherein the support includes a needle unit case support that supports the needle unit case. 
     Such an arrangement makes it possible to support the needle package and the prefilled syringe inside the package body. 
     In one aspect of the syringe package, the needle unit and the prefilled syringe are separated from each other when not in use. 
     Such an arrangement makes it possible to individually support the needle package and the prefilled syringe inside the package body. 
     In one aspect of the syringe package, the needle unit case support is provided on the base. 
     Such an arrangement inhibits displacement of the needle unit case support with respect to the package body. 
     In another embodiment, the package body includes the displacement regulation unit. Accordingly, it is possible to simplify the arrangement of the prefilled syringe system and to inhibit the gasket from being pressed by the plunger. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  is an exploded perspective view of a syringe package according to a first embodiment of the present invention. 
         FIG. 2  is a longitudinal sectional view of a prefilled syringe included in the syringe package. 
         FIG. 3  is a longitudinal sectional view of a needle package included in the syringe package. 
         FIG. 4  is a plan view of a support included in the syringe package. 
         FIG. 5  is a longitudinal sectional view of the syringe package. 
         FIG. 6  is a longitudinal sectional view taken along line VI-VI of  FIG. 5 . 
         FIG. 7A  is a transverse sectional view taken along line VIIA-VIIA of  FIG. 5 , and  FIG. 7B  is a transverse sectional view taken along line VIIB-VIIB of  FIG. 5 . 
         FIG. 8  is an exploded perspective view of a syringe package provided with a support according to a modification. 
         FIG. 9  is a perspective view of the support and a prefilled syringe system illustrated in  FIG. 8 . 
         FIG. 10  is an exploded perspective view of a syringe package according to a second embodiment of the present invention. 
         FIG. 11  is an exploded perspective view of a support and two prefilled syringe systems illustrated in  FIG. 10 . 
         FIG. 12  is a longitudinal sectional view of the syringe package illustrated in  FIG. 10 . 
         FIG. 13  is a longitudinal sectional view taken along line XIII-XIII of  FIG. 12 . 
         FIG. 14  is an exploded perspective view of a syringe package according to a third embodiment of the present invention. 
         FIG. 15  is a longitudinal sectional view of the syringe package illustrated in  FIG. 14 . 
         FIG. 16  is a longitudinal sectional view taken along line XVI-XVI of  FIG. 15 . 
         FIG. 17  is a perspective view of a syringe package according to a fourth embodiment of the present invention. 
         FIG. 18  is an exploded perspective view of the syringe package illustrated in  FIG. 17 . 
         FIG. 19  is a cross-sectional view of the syringe package taken along the line XIX-XIX in  FIG. 17 . 
         FIG. 20  is a perspective view of a syringe package according to a fifth embodiment of the present invention. 
         FIG. 21  is an exploded perspective view of the syringe package illustrated in  FIG. 20 . 
         FIG. 22  is a cross-sectional view of the syringe package taken along line XXII-XXII in  FIG. 20 . 
         FIG. 23  is a perspective view of a syringe package according to a sixth embodiment of the present invention. 
         FIG. 24  is an exploded perspective view of the syringe package illustrated in  FIG. 23 . 
         FIG. 25  is a cross-sectional view of the syringe package taken along line XXV-XXV in  FIG. 23 . 
         FIG. 26  is an exploded perspective view of a syringe package according to a reference example of the present invention. 
         FIG. 27  is a plan view of a support illustrated in  FIG. 26 . 
         FIG. 28  is a longitudinal sectional view of the syringe package of  FIG. 26 . 
         FIG. 29  is a cross-sectional view of the syringe package taken along line XXIX-XXIX in  FIG. 28 . 
     
    
    
     DETAILED DESCRIPTION 
     Embodiments of a syringe package according to the present invention will now be described with reference to the accompanying drawings. 
     First Embodiment 
     As illustrated in  FIG. 1 , a syringe package  10 A according to a first embodiment of the present invention includes a prefilled syringe system  700 , a package body  12 , and a support  14 . The prefilled syringe system  700  includes a tubular syringe body  705  (inner cylinder  710 ) filled with a predetermined drug in advance. The package body  12  houses the syringe system  700 . The support  14  is disposed inside the package body  12  and supports the prefilled syringe system  700 . 
     First, the prefilled syringe system  700  will be described.  FIGS. 1 to 3  illustrate the prefilled syringe system  700  as a device for subcutaneous or intradermal administration of a vaccine (drug) for influenza or the like. The prefilled syringe system  700  includes a prefilled syringe  702  and a needle package  704  provided with a needle unit  760 . Specifically, when not in use, the prefilled syringe system  700  is kept while the prefilled syringe  702  and the needle unit  760  are separated from each other, and when in use, the needle unit  760  of the needle package  704  is attached to the prefilled syringe  702 . 
     As illustrated in  FIGS. 1 and 2 , the prefilled syringe  702  includes the tubular syringe body  705 , a gasket  706  provided inside the syringe body  705 , and a plunger  708  that presses the gasket  706  toward a leading end of the syringe body  705 . The syringe body  705  includes an inner cylinder  710 , and an outer cylinder  712 . The inner cylinder  710  is included in a small diameter barrel filled with the drug. The outer cylinder  712  is included in a large diameter cowling cylinder provided on an outer periphery of the inner cylinder  710 . 
     The inner cylinder  710  is formed in an integrated manner, including, for example, a resin material or glass. The inner cylinder  710  is transparent so as to make a liquid drug inside the inner cylinder  710  visible. A leading end portion of the inner cylinder  710  has a diameter smaller than a base end of the inner cylinder  710 . To the leading end portion of the inner cylinder  710 , a connection  720  is fixed. The connection  720  includes a threaded portion  718  into which a threaded portion  716  of a cap  714  is screwed. The cap  714  is configured to seal an opening portion at a leading end of inner cylinder  710 . The base end of the inner cylinder  710  is provided with an inner cylinder flange  722 . 
     The outer cylinder  712  is formed in an integrated manner, including a resin material. It is preferable that the outer cylinder  712  be transparent in order to easily make the liquid drug filled inside the inner cylinder  710  visible. The outer cylinder  712  is provided coaxially with the inner cylinder  710 . A leading end of the outer cylinder  712  is placed somewhat closer to a base end of the syringe body  705  than the leading end of the inner cylinder  710 . In other words, a part of the connection  720  of the inner cylinder  710  is exposed to the leading end of the outer cylinder  712 . Furthermore, the outer cylinder  712  is extended toward the base end of the syringe body  705  from the base end of the inner cylinder  710 . 
     An inner periphery of the outer cylinder  712  is provided with a plurality of (four) leading end protrusions  724  (see  FIG. 7A ) and a plurality of (two) base end protrusions  726  (see  FIG. 6 ) for supporting the inner cylinder  710 . The leading end protrusions  724  are in contact with a leading end surface of the inner cylinder flange  722 . The base end protrusions  726  are in contact with a base end surface of the inner cylinder flange  722 . In other words, the leading end protrusions  724  and the base end protrusions  726  clamp the inner cylinder flange  722  in the direction of axis so that the inner cylinder  710  is fixed to the outer cylinder  712 . 
     As illustrated in  FIGS. 1 and 6 , the outer cylinder  712  has an outside diameter that enables a user to hold the outer cylinder  712  easily in his/her hand. On an outer periphery of the outer cylinder  712 , first opening portions  728 , second opening portions  730 , and third opening portions  732  are formed in pairs, and the opening portions of each pair face each other. The first opening portions  728 , the second opening portions  730 , and the third opening portions  732  are aligned along the axis of the outer cylinder  712 . 
     Each first opening portion  728  is a hole that enables visual check of the drug inside the inner cylinder  710  and is provided at the leading end of the outer cylinder  712 . In the illustrated example, each first opening portion  728  is formed as an elongated hole extended in the direction of axis of the outer cylinder  712 . It should be noted that each first opening portion  728  may be formed in any shape. 
     Each second opening portion  730  is a hole that enables formation of the leading end protrusions  724  and the base end protrusions  726  and is placed closer to a base end of the outer cylinder  712  than each first opening portion  728 . The two second opening portions  730  face each other, sandwiching the inner cylinder flange  722 . Each second opening portion  730  is extended along a circumferential direction of the outer cylinder  712 . It should be noted that each second opening portion  730  may be formed in any shape. 
     Each third opening portion  732  is a hole that enables assembly of the plunger  708  and is placed closer to the base end of the outer cylinder  712  than each second opening portion  730 . Each third opening portion  732  is extended along the circumferential direction of the outer cylinder  712 . It should be noted that each third opening portion  732  may be formed in any shape. 
     As illustrated in  FIG. 2 , on the inner periphery of the outer cylinder  712 , a part closer to the base end than the third opening portions  732  is provided with a projecting portion  734  that projects radially inward. The base end of the outer cylinder  712  is provided with an outer cylinder flange  736  extended radially outward from the outer cylinder  712 . 
     The gasket  706  is provided liquid-tightly and movably along the axis of the inner cylinder  710 . In other words, the gasket  706  is slidable relative to an inner periphery of the inner cylinder  710 . Examples of a material of the gasket  706  include various rubber materials such as natural rubber, butyl rubber, isoprene rubber, butadiene rubber, styrene-butadiene rubber, and silicone rubber; various thermoplastic elastomers of polyurethane type, polyester type, polyamide type, olefin type, and styrene type; or elastic materials such as mixtures of the above examples. 
     The plunger  708  is formed in an integrated manner, including a resin material. A leading end of the plunger  708  is inserted into the inner cylinder  710 , and a base end portion of the plunger  708  is exposed to the base end from the outer cylinder  712 . The plunger  708  includes a shaft  738  extended along the axis of the inner cylinder  710 . 
     A leading end of the shaft  738  is provided with a pressing portion  740  for pressing a base end surface of the gasket  706  toward the leading end of the inner cylinder  710 . When not in use, the pressing portion  740  is spaced from (is not connected to) the gasket  706 . 
     As illustrated in  FIGS. 2 and 6 , a first intermediate flange  742 , a second intermediate flange  744 , and a plunger flange  746  are provided on a base end of the shaft  738 . The first intermediate flange  742  and the second intermediate flange  744  are formed to have a larger diameter than the inner cylinder  710  and a smaller diameter than the outer cylinder  712 . When not in use, the first intermediate flange  742  contacts the projecting portion  734  of the outer cylinder  712  in order to inhibit the plunger  708  from slipping out of the inner cylinder  710 . The second intermediate flange  744  is provided with a lock  748 . At the completion of administrating the drug, the lock  748  is locked with the projecting portion  734  and inhibits displacement of the plunger  708  along the axis. 
     The plunger flange  746  is exposed to the base end of the outer cylinder  712 . The plunger flange  746  is a disk-shaped member having a size that enables easy manual handling, being extended radially outward from the base end of the shaft  738 . The plunger flange  746  has an outside diameter larger than an inside diameter of the outer cylinder  712 . 
     As illustrated in  FIGS. 7A and 7B , a transverse section of the shaft  738  is formed in a cross shape. In  FIG. 7B , a section of the shaft  738  between the second intermediate flange  744  (see  FIG. 6 ) and the plunger flange  746  includes a central portion  750 , two plate-shaped first protruding portions  752 , and two plate-shaped second protruding portions  754 . The central portion  750  is placed on the axis of the shaft  738 . The two first protruding portions  752  are extended in opposite directions from the central portion  750 . The two second protruding portions  754  are extended in opposite directions from the central portion  750  in a direction perpendicular to the extension direction of the first protruding portions  752 . The central portion  750 , each of the first protruding portions  752 , and each of the second protruding portions  754  are extended from the second intermediate flange  744  to the plunger flange  746 . A length of each first protruding portion  752  extended from the central portion  750  is shorter than a length of each second protruding portion  754  extended from the central portion  750 . 
     As illustrated in  FIGS. 1 and 3 , the needle package  704  includes the needle unit  760  that is attachable to the connection  720  of the prefilled syringe  702  and a needle unit case  762  that houses the needle unit  760 . The needle unit case  762  includes a case body  763  that houses the needle unit  760  and a sealing film  764  that seals the case body  763 . The needle unit  760  includes a tubular needle body  766  having a leading end provided with a sharp needle point and a needle hub  768  to which the needle body  766  is fixed. Hereinafter, in the needle unit  760  and components thereof, a direction in which the needle point of the needle body  766  is placed may be referred to as “leading end”, and the opposite side may be referred to as “base end”. 
     The needle body  766  is a hollow tubular member that includes, for example, a metal material such as stainless steel, aluminum or an aluminum alloy, titanium or a titanium alloy; or a hard resin material such as polyphenylene sulfide. 
     The needle hub  768  includes a first hub  770 , a second hub  772 , and an elastic member  774 . The first hub  770  holds the needle body  766 , and the second hub  772  is a hollow member provided on the first hub  770  and is detachable from the connection  720  of the prefilled syringe  702 . The elastic member  774  is disposed inside the second hub  772 . The first hub  770  and the second hub  772  each include synthetic resin such as polycarbonate, polypropylene, and polyethylene. 
     The first hub  770  includes a needle holding unit  776 , a flange  778 , and an annular portion  780 . The needle holding unit  776  is provided with an insertion hole through which the needle body  766  is inserted. The flange  778  has a circular ring shape, projecting radially outward from a leading end of the needle holding unit  776 . The annular portion  780  is extended from the flange  778  toward the leading end. 
     A leading end portion of the needle holding unit  776  is placed inside the annular portion  780 . It is preferable that a projecting length of the needle body  766  from the leading end of the needle holding unit  776  be set to, for example, 0.9 mm to 1.4 mm in order to reliably administer the liquid drug intradermally (dermally). The flange  778  is formed in a plate shape, having the maximum diameter of the needle hub  768 . The flange  778  is placed close to the leading end of the needle body  766 . 
     The annular portion  780  is formed in a circular ring shape so as to cover the leading end portion of the needle holding unit  776  in the circumferential direction. In the direction of axis of the needle body  766 , the annular portion  780  has a projecting end face placed substantially equal to a leading end surface of the needle holding unit  776 . The annular portion  780  has an outside diameter smaller than an outside diameter of the flange  778 . 
     The second hub  772  is a tubular member extended in the direction of axis of the needle body  766 , having a leading end portion provided with a flange  782  having a circular ring shape. While a base end of the needle holding unit  776  is inserted into a leading end of an inner hole of the second hub  772  and the flange  782  is in contact with the flange  778 , the second hub  772  is fixed to the first hub  770 . Into a base end of the inner hole of the second hub  772 , the leading end portion of the inner cylinder  710  of the syringe body  705  is inserted. An outer periphery of a base end of the second hub  772  is provided with a threaded portion  784  that is screwed into the threaded portion  718  of the connection  720 . 
     The elastic member  774  is placed on the base end of the needle holding unit  776  in the inner hole of the second hub  772 . The elastic member  774  is provided with an insertion hole through which a base end portion of the needle body  766  is inserted. While the second hub  772  is attached to the connection  720  of the prefilled syringe  702 , the elastic member  774  functions as a sealing member that contacts an outer periphery of the needle body  766  and an inner periphery of the second hub  772  in a liquid-tight manner. 
     The case body  763  has a substantially U-shaped transverse section. Specifically, the case body  763  has a circular bottom surface  786  and a peripheral wall  788  provided on an outer edge of the bottom surface  786 . The peripheral wall  788  is tapered, gradually decreasing in diameter toward the bottom surface  786 . An inner surface of the peripheral wall  788  is provided with an engagement projection  790  with which the flange  778  is engaged. An outer surface of the peripheral wall  788  is provided with a plurality of (six in  FIG. 6 ) recesses  792  and a plurality of (six in  FIG. 6 ) projections  794  extended along the axis of the needle body  766 . The recesses  792  and the projections  794  are provided alternately in the circumferential direction. The sealing film  764  is provided to close an opening portion of the needle unit case  762 . 
     When using the prefilled syringe system  700  with such an arrangement, first, a user removes the cap  714  of the prefilled syringe  702  and peels off the sealing film  764  of the needle package  704 . While placing the needle unit  760  inside the needle unit case  762 , the user screws the threaded portion  718  of the connection  720  of the prefilled syringe  702  into the threaded portion  784  of the second hub  772  of the needle unit  760  so as to connect the needle unit  760  to the prefilled syringe  702 . Then, the user takes the needle unit  760  out of the needle unit case  762 . While holding the outer cylinder  712 , the user punctures the skin of a living body with the needle body  766  and places the needle point intradermally. Next, the user presses the plunger flange  746  toward the leading end with his/her thumb. Accordingly, the pressing portion  740  of the plunger  708  contacts the gasket  706 , and the gasket  706  is displaced toward the leading end, which enables injection of the drug inside the inner cylinder  710  into the skin through an inner hole of the needle body  766 . After intradermal injection of the drug, the needle body  766  is removed from the skin. 
     As illustrated in  FIG. 1 , the package body  12  is made from paper in a cuboid shape. It should be noted that the package body  12  may include a material other than paper such as resin. The package body  12  includes a package base  16  and a cover  18  provided openable with respect to the package base  16 . The package base  16  is included in a bottom surface  12   a  and a side surface  12   b  of the package body  12 . The cover  18  is included in a top surface  12   c  of the package body  12  and a part of the side surface  12   b  in the direction of arrow Y 1 . In the example of  FIG. 1 , the package body  12  is elongated in the direction of arrow X, the bottom surface  12   a  is placed in the direction of arrow Z 1 , and the top surface  12   c  is placed in the direction of arrow Z 2 . 
     The support  14  is formed by vacuum forming or pressure forming of a resin material. Examples of the resin material included in the support  14  include butadiene-styrene (BS), acrylonitrile ethylene-propylene-diene styrene (AES), polycarbonate (PC), polypropylene (PP), polyethylene (PE), polystyrene (PS), high impact polystyrene (HIPS), polyethylene terephthalate (PET), and polyvinyl chloride (PVC). 
     As illustrated in  FIG. 1  and  FIGS. 4 to 6 , the support  14  includes a base  20 , a needle unit case support  22 , and a syringe support  24 . The base  20  is a plate-shaped member extended in a longitudinal direction of the package body  12 . The needle unit case support  22  supports the needle unit case  762  of the needle package  704 . The syringe support  24  supports the prefilled syringe  702 . The base  20  is placed on the bottom surface  12   a  of the package body  12 , being substantially equal to the bottom surface  12   a  in size. In other words, the side surface  12   b  of the package body  12  regulates displacement of the base  20  in a direction parallel to the bottom surface  12   a  (in the directions of arrows X and Y). That is, the base  20  holds positions of the needle unit case support  22  and the syringe support  24  inside the package body  12 . 
     The needle unit case support  22  includes an inner periphery  26 , an outer periphery  28 , and a top portion  30 . The inner periphery  26  and the outer periphery  28  project toward the side opposite to the bottom surface  12   a  (in the direction of arrow Z 2 ) from an end of one end of the base  20  (end in the direction of arrow X 1 ). The top portion  30  connects a projecting end of the inner periphery  26  and that of the outer periphery  28  with each other. The inner periphery  26  is formed in a circular ring shape. 
     The projecting end of the inner periphery  26  in the direction of arrow X 2  is cut out. The outer periphery  28  is formed in a substantial C-shape in a plan view. A projecting length of the needle unit case support  22  is set to about one third of the total length of the needle unit case  762 . It should be noted that the projecting length of the needle unit case support  22  may be set to any length. 
     The syringe support  24  includes a leading end support (leading end regulation unit)  32 , an intermediate support (positional shift regulation unit)  34 , and a base end support (displacement regulation unit)  36 . The leading end support  32  supports a leading end of the prefilled syringe  702 . The intermediate support  34  supports an intermediate portion of the syringe body  705 . The base end support  36  supports the base end of the syringe body  705 . 
     The leading end support  32  projects from the base  20  in the direction of arrow Z 2 , being connected to the needle unit case support  22  and extended in the direction of arrow X. The leading end support  32  includes a first curved surface  38 , two first side surfaces  40  and  42 , two first top portions  44  and  46 , and a first end surface  48 . The first curved surface  38  is linked to the inner periphery  26 . The first side surfaces  40  and  42  are placed on both sides of the first curved surface  38  in the direction of arrow Y. The first top portions  44  and  46  connect the first side surfaces  40  and  42 , respectively, with the first curved surface  38 . The first end surface  48  is oriented in the direction of arrow X 2 . 
     The first curved surface  38  has an arcuate transverse section. A width (dimension in the direction of arrow Y) of the first curved surface  38  is larger than a width (outside diameter) of the cap  714  of the syringe body  705 . An end of the first curved surface  38  in the direction of arrow X 2  is provided with a curved projection  50  that projects in the direction of arrow Z 2 . The curved projection  50  is extended over the entire width of the first curved surface  38 . An outer surface of the connection  720  of the syringe body  705  comes into contact with the curved projection  50  (see  FIG. 5 ). The first end surface  48  is linked to the first curved surface  38  (curved projection  50 ), each of the first side surfaces  40  and  42 , and each of the first top portions  44  and  46 . The two first side surfaces  40  and  42  are linked to the outer periphery  28  and sandwich the first curved surface  38  in the direction of arrow Y. Each of the first top portions  44  and  46  is linked to the top portion  30  of the needle unit case support  22  in a coplanar manner. 
     The intermediate support  34  projects from the base  20  in the direction of arrow Z 2 . The intermediate support  34  is spaced from the leading end support  32  in the direction of arrow X 2 . The intermediate support  34  includes a second curved surface  52 , two second side surfaces  54  and  56 , two second top portions  58  and  60 , and two second end surfaces  62  and  64 . The second curved surface  52  has an arcuate (substantially semicircular) transverse section. The second side surfaces  54  and  56  are placed on both sides of the second curved surface  52 . The second top portions  58  and  60  connect the second side surfaces  54  and  56 , respectively, with the second curved surface  52 . The second end surfaces  62  and  64  are oriented in the direction of arrow X. 
     A width (dimension in the direction of arrow Y) of an end of the second curved surface  52  in the direction of arrow Z 2  is formed somewhat smaller than the outside diameter of the outer cylinder  712  (see  FIG. 7A ). The two second side surfaces  54  and  56  sandwich the second curved surface  52  in the direction of arrow Y. Each of the second side surfaces  54  and  56  is extended in the direction of arrow X. Each of the second end surfaces  62  and  64  is linked to the second curved surface  52 , each of the second side surfaces  54  and  56 , and each of the second top portions  58  and  60 . 
     The base end support  36  projects from the base  20  in the direction of arrow Z 2 . The base end support  36  is spaced from the intermediate support  34  in the direction of arrow X 2 . A length L 1  in the direction of arrow X of the base end support  36  is shorter than a length L 2  between the plunger flange  746  and the base end of the outer cylinder  712  of the syringe body  705  not in use (see  FIG. 6 ). A difference ΔL between the length L 1  and the length L 2  is smaller than a space L 3  between the gasket  706  and the plunger  708  of the syringe body  705  not in use. 
     The base end support  36  includes a groove forming unit  68 , two third side surfaces  70  and  72 , two third top portions  74  and  76 , and two third end surfaces  78  and  80 . The groove forming unit  68  forms a groove (slit)  66  into which the first protruding portion  752  of the plunger  708  is inserted. The third side surfaces  70  and  72  are placed on both sides of the groove forming unit  68 . The third top portions  74  and  76  connect the third side surfaces  70  and  72 , respectively, with the groove forming unit  68 . The third end surfaces  78  and  80  are oriented in the direction of arrow X. 
     As illustrated in  FIG. 7B , the groove forming unit  68  includes a groove side surface  82 , a groove side surface  84 , and a groove bottom surface  86 . The groove side surface  82  is inclined from the third top portion  74  toward the base  20  in the direction of arrow Y 2 . The groove side surface  84  is inclined from the third top portion  76  toward the base  20  in the direction of arrow Y 1 . The groove bottom surface  86  connects the groove side surface  82  and the groove side surface  84  with each other. In other words, a width of the groove  66  is gradually reduced toward the groove bottom surface  86 , and a depth of the groove  66  is larger than a projecting length of the first protruding portion  752 . 
     The two third side surfaces  70  and  72  are inclined, approaching each other in the direction of arrow Z 2 . The third top portion  74  connects the third side surface  70  and the groove side surface  82  with each other. The third top portion  76  connects the third side surface  72  and the groove side surface  84  with each other. Each of the third end surfaces  78  and  80  is linked to the groove forming unit  68 , each of the third side surfaces  70  and  72 , and each of the third top portions  74  and  76 . 
     In the syringe package  10 A with such an arrangement, the needle package  704  is inserted into the inside of the inner periphery  26  of the needle unit case support  22 . Specifically, the needle unit case  762  is inserted into the inside of the inner periphery  26 . Accordingly, the needle unit case  762  pushes out (elastically deforms) the inner periphery  26 , causing action of resilience (elastic force) of the inner periphery  26  on the outer surface of the peripheral wall  788  of the needle unit case  762 . This action allows the needle unit case support  22  to regulate displacement of the needle package  704  in the directions of arrows X, Y and Z with respect to the support  14 . In other words, the needle package  704  is held by the needle unit case support  22 . 
     On the other hand, the prefilled syringe  702  is attached to the leading end support  32 , the intermediate support  34 , and the base end support  36 . Specifically, the connection  720  of the prefilled syringe  702  is mounted on the first curved surface  38  of the leading end support  32 , and the outer cylinder  712  of the prefilled syringe  702  is attached to the second curved surface  52  of the intermediate support  34 . Accordingly, the outer cylinder  712  pushes out (elastically deforms) the second curved surface  52 , causing action of resilience (elastic force) of the second curved surface  52  on the outer periphery of the outer cylinder  712 . This action allows the second curved surface  52  to regulate displacement of the outer cylinder  712  in the directions of arrows X, Y and Z with respect to the support  14 . In other words, the outer cylinder  712  is held by the intermediate support  34 . 
     The first end surface  48  and a leading end surface of the outer cylinder  712  face each other in the direction of arrow X. Accordingly, the first end surface  48  regulates displacement of the outer cylinder  712  in the direction of arrow X 1  with respect to the plunger  708  (support  14 ). It should be noted that the cap  714  is not in contact with the first curved surface  38 . 
     The first protruding portion  752  of the plunger  708  of the prefilled syringe  702  is inserted into the groove  66  of the base end support  36 . This allows the groove forming unit  68  (groove side surfaces  82  and  84 ) to regulate displacement of the plunger  708  in the direction of arrow Y with respect to the support  14 . 
     In addition, the third end surface  78  and a base end surface of the outer cylinder  712  face each other in the direction of arrow X. This arrangement regulates displacement of the outer cylinder  712  in the direction of arrow X 2  with respect to the plunger  708  (support  14 ). Furthermore, the third end surface  80  and the plunger flange  746  face each other in the direction of arrow X. This arrangement regulates displacement of the plunger  708  in the direction of arrow X 1  with respect to the syringe body  705  (support  14 ). Still further, the plunger flange  746  and a side surface of the package body  12  in the direction of arrow X 2  face each other. This arrangement regulates displacement of the plunger  708  in the direction of arrow X 2  with respect to the syringe body  705  (support  14 ). It should be noted that displacement of the plunger  708  toward the base end with respect to the outer cylinder  712  is also regulated by engagement between the first intermediate flange  742  and the projecting portion  734 . 
     According to this embodiment, the base end support  36  regulates the relative displacement of the outer cylinder  712  and the plunger  708  in the direction in which the gasket  706  and the plunger  708  approach each other. Accordingly, it is possible to simplify the arrangement of the prefilled syringe system  700  and to inhibit the plunger  708  from contacting the gasket  706  (the gasket  706  from being pressed by the plunger  708 ) during transportation of the syringe package  10 A. 
     In addition, the base end support  36  is disposed between the outer cylinder  712  and the plunger flange  746 . This arrangement effectively inhibits displacement of the outer cylinder  712  toward the base end with respect to the plunger  708  and displacement of the plunger  708  toward the leading end (toward the gasket  706 ) with respect to the outer cylinder  712 . 
     Furthermore, the base end support  36  is provided with the groove  66  into which the first protruding portion  752  of the plunger  708  is inserted. This arrangement inhibits separation of the base end support  36  from between the outer cylinder  712  and the plunger flange  746  due to vibration during transportation of the syringe package  10 A. 
     Still further, the intermediate support  34  contacts the outer cylinder  712  and regulates displacement of the outer cylinder  712  in the direction intersecting with the axis. This arrangement further inhibits separation of the base end support  36  from between the outer cylinder  712  and the plunger flange  746  due to vibration during transportation of the syringe package  10 A. 
     Still further, the outer cylinder  712  (the intermediate portion of the syringe body  705 ) is locked with the intermediate support  34 . This arrangement further inhibits separation of the base end support  36  from between the outer cylinder  712  and the plunger flange  746  due to vibration during transportation of the syringe package  10 A. 
     According to this embodiment, the leading end support  32  regulates displacement of the outer cylinder  712  toward the leading end. This arrangement further inhibits a positional shift of the syringe body  705 . In addition, the support  14  includes the needle unit case support  22 . This arrangement supports the needle package  704  and the prefilled syringe  702  individually inside the package body  12 . 
     According to this embodiment, the needle unit case support  22 , the leading end support  32 , the intermediate support  34 , and the base end support  36  are provided in an integrated manner with respect to the base  20 . This arrangement inhibits displacement of the needle unit case support  22 , the leading end support  32 , the intermediate support  34 , and the base end support  36  inside the package body  12 . 
     This embodiment is not limited to the above arrangement. For example, the syringe package  10 A may be provided with a support  90  illustrated in  FIGS. 8 and 9  instead of the support  14 . As illustrated in  FIGS. 8 and 9 , the support  90  is made from paper, including a base  92  placed on a bottom surface of the package body  12 , and a needle unit case support  94  and a syringe support  96  provided on the base  92 . 
     The base  92  includes a rectangular base body  98  and a leg  100 . The base body  98  is substantially equal to the bottom surface  12   a  of the package body  12  in size. The leg  100  is extended from an outer edge of the base body  98 . The needle unit case support  94  is a hole formed at an end of one end of the base body  98  (end in the direction of arrow X 1 ). 
     The syringe support  96  includes a leading end support (leading end regulation unit)  102 , an intermediate support (positional shift regulation unit)  104 , and a base end support (displacement regulation unit)  106 . The leading end support  102  supports the leading end of the syringe body  705 . The intermediate support  104  supports the intermediate portion of the syringe body  705 . The base end support  106  supports the base end of the syringe body  705 . 
     The leading end support  102  includes two first fixed portions  108  and  110 , and two first extended portions  112  and  114 . The first fixed portions  108  and  110  are fixed to the base body  98 . The first extended portions  112  and  114  are extended from the first fixed portions  108  and  110 , respectively, in the direction of arrow Z 2 . The two first extended portions  112  and  114  are spaced from each other in a width direction (the direction of arrow Y) of the base  92 . The space between the first extended portions  112  and  114  is smaller than a width of the connection  720 . An arcuate first cut  116  is formed in the first extended portion  112 , and an arcuate first cut  118  is formed in the first extended portion  114 . The two first cuts  116  and  118  communicate with each other to form one circular first hole  120 . Through the first hole  120 , the connection  720  of the prefilled syringe  702  is inserted. The first extended portions  112  and  114  regulate displacement of the connection  720  in the directions of arrows Y and Z while the connection  720  is inserted into the first hole  120 . A diameter of the first hole  120  is larger than an outside diameter of the connection  720  and smaller than the outside diameter of the outer cylinder  712 . 
     The intermediate support  104  includes two second fixed portions  122  and  124 , and two second extended portions  126  and  128 . The second fixed portions  122  and  124  are fixed to the base body  98 . The second extended portions  126  and  128  are extended from the second fixed portions  122  and  124 , respectively, in the direction of arrow Z 2 . The two second extended portions  126  and  128  are spaced from each other in the width direction (the direction of arrow Y) of the base  92 . The space between the second extended portions  126  and  128  is smaller than the outside diameter of the outer cylinder  712 . An arcuate second cut  130  is formed in the second extended portion  126 , and an arcuate second cut  132  is formed in the second extended portion  128 . The two second cuts  130  and  132  communicate with each other to form one circular second hole  134 . Through this second hole  134 , the outer cylinder  712  of the prefilled syringe  702  is inserted. The second extended portions  126  and  128  regulate displacement of the outer cylinder  712  in the directions of arrows Y and Z while the outer cylinder  712  is inserted into the second hole  134 . The second hole  134  has a diameter slightly larger than the outside diameter of the outer cylinder  712 . 
     The base end support  106  includes two third fixed portions  136  and  138 , and two third extended portions  140  and  142 . The third fixed portions  136  and  138  are fixed to the base body  98 . The third extended portions  140  and  142  are extended from the third fixed portions  136  and  138 , respectively, in the direction of arrow Z 2 . Each of the third extended portions  140  and  142  is extended in an extension direction (the direction of arrow X) of the base body  98 . The two third extended portions  140  and  142  are spaced from each other in the width direction (the direction of arrow Y) of the base  92 . The space between the third extended portions  140  and  142  gradually increases in the direction of arrow Z 2 . In other words, a gap between the third extended portions  140  and  142  that face each other functions as a groove  144  into which the first protruding portion  752  of the plunger  708  of the prefilled syringe  702  is inserted. 
     In such a syringe package  10 A provided with the support  90  according to the modification, the needle unit case  762  of the needle package  704  is inserted into the needle unit case support  94 . This allows the needle unit case support  94  to regulate displacement of the needle package  704  in the directions of arrows X and Y with respect to the support  90 . Furthermore, the first extended portions  112  and  114  and the leading end surface of the outer cylinder  712  face each other in the direction of arrow X. This arrangement allows the first extended portions  112  and  114  to regulate displacement of the outer cylinder  712  in the direction of arrow X 1  with respect to the plunger  708  (support  90 ). 
     The prefilled syringe  702  is attached to the leading end support  102 , the intermediate support  104 , and the base end support  106 . Specifically, the connection  720  of the prefilled syringe  702  is inserted into the first hole  120  of the leading end support  102 . This allows the first extended portions  112  and  114  included in the first hole  120  to regulate displacement of the connection  720  in the directions of arrows Y and Z with respect to the support  90 . 
     The outer cylinder  712  of the prefilled syringe  702  is inserted into the second hole  134  of the intermediate support  104 . This allows the second extended portions  126  and  128  included in the second hole  134  to regulate displacement of the outer cylinder  712  in the directions of arrows Y and Z with respect to the support  90 . 
     The first protruding portion  752  of the plunger  708  of the prefilled syringe  702  is inserted into the groove  144  of the base end support  106 . This allows the third extended portions  140  and  142  included in the groove  144  to regulate displacement of the plunger  708  in the direction of arrow Y with respect to the support  90 . In addition, the third extended portions  140  and  142  and the base end surface of the outer cylinder  712  face each other in the direction of arrow X. This arrangement regulates displacement of the outer cylinder  712  in the direction of arrow X 2  with respect to the plunger  708  (support  90 ). Furthermore, the third extended portions  140  and  142  and the plunger flange  746  face each other in the direction of arrow X. This arrangement regulates displacement of the plunger  708  in the direction of arrow X 1  with respect to the syringe body  705  (support  90 ). 
     In this manner, the support  90  according to the modification also shows effects similar to those shown by the support  14 . 
     Second Embodiment 
     Next, a syringe package  10 B according to a second embodiment of the present invention will be described. In the syringe package  10 B according to the second embodiment, the same components as those in the syringe package  10 A according to the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. This also applies to a syringe package  10 C according to a third embodiment that will be described below. 
     As illustrated in  FIG. 10 , the syringe package  10 B according to this embodiment includes a box-shaped package body  150  and a support  152 . The package body  150  houses two sets of prefilled syringes  702  and needle packages  704 . The support  152  is provided inside the package body  150 . In other words, the syringe package  10 B houses two prefilled syringe systems  700  together. Each prefilled syringe system  700  is arranged similarly to the prefilled syringe system  700  according to the first embodiment. 
     The package body  150  is made from paper in a cuboid shape. It should be noted that the package body  150  may include a material other than paper such as resin. Specifically, the package body  150  includes a package base  154  and a cover  156  that is openable and joined to the package base  154 . The package base  154  is included in a bottom surface  150   a  and a side surface  150   b  of the package body  150 . The cover  156  is included in a top surface  150   c  of the package body  150  and a part of the side surface  150   b  in the direction of arrow Y 1 . In the example of  FIG. 10 , the package body  150  is elongated in the direction of arrow Z, the bottom surface  150   a  is placed in the direction of arrow Z 1 , and the top surface  150   c  is placed in the direction of arrow Z 2 . 
     As illustrated in  FIGS. 10 to 14 , the support  152  includes a first support member  158  and a second support member  160 . The first support member  158  and the second support member  160  are assembled, for example, by folding paper. The first support member  158  includes a rectangular first base  162 , a leading end support (leading end regulation unit)  164 , and a first base end support  166 . The first base  162  is extended in an extension direction (the direction of arrow Z) of the package body  150 . The leading end support  164  supports a leading end of the prefilled syringe  702 , and the first base end support  166  supports a base end of the prefilled syringe  702 . 
     A width (dimension in the direction of arrow X) of the first base  162  is substantially equal to a width of the side surface  150   b  of the package body  150  in the direction of arrow Y 2 . The leading end support  164  is formed in a substantial U-shape in a side view, being provided at one end (end in the direction of arrow Z 1 ) of the first base  162 . Specifically, the leading end support  164  includes a first wall  168 , a second wall  170 , and a third wall  172 . The first wall  168  projects from one end of the first base  162  in the direction of arrow Y 1 . The second wall  170  projects from a projecting end of the first wall  168  in the direction of arrow Z 2 . The third wall  172  is extended from a projecting end of the second wall  170  in the direction of arrow Y 2 . A projecting end face of the third wall  172  is fixed to the first base  162  with a fixing member (adhesive or the like). It should be noted that the third wall  172  may not be fixed to the first base  162 . 
     An interval between the first wall  168  and the third wall  172  that face each other is slightly longer than a distance from a leading end of the outer cylinder  712  of the prefilled syringe  702  to a leading end of the cap  714  (see  FIG. 12 ). The third wall  172  is provided with two syringe support holes  174  through which the connection  720  of the prefilled syringe  702  is inserted. The syringe support holes  174  are arranged side by side in the direction of arrow X. Each syringe support hole  174  has a diameter smaller than an outside diameter of the outer cylinder  712 . 
     The first base end support  166  is formed in a substantial U-shape in a side view, being provided at the other end (end in the direction of arrow Z 2 ) of the first base  162 . Specifically, the first base end support  166  includes a fourth wall  178 , a fifth wall  180 , and a sixth wall  182 . The fourth wall  178  projects from the other end of the first base  162  in the direction of arrow Y 1 . The fifth wall  180  projects from a projecting end of the fourth wall  178  in the direction of arrow Z 1 . The sixth wall  182  projects from a projecting end of the fifth wall  180  in the direction of arrow Y 2 . 
     Projecting lengths of the fourth wall  178  and the sixth wall  182  are shorter than projecting lengths of the first wall  168  and the third wall  172 . The fifth wall  180  is provided with two first grooves (slits)  184  into which a first protruding portion  752  of the plunger  708  is inserted. The first grooves  184  are formed over the entire length of the fifth wall  180  in the direction of arrow Z. The first grooves  184  are spaced from each other in the direction of arrow X. A projecting end face of the sixth wall  182  is fixed to the first base  162  with a fixing member (adhesive or the like). It should be noted that the sixth wall  182  may not be fixed to the first base  162 . An interval between the sixth wall  182  and the fourth wall  178  is substantially equal to the entire length of the outer cylinder  712 . 
     The second support member  160  includes a second base  188 , a second base end support  190  that supports the base end of the prefilled syringe  702 , and a needle support  192  that supports a needle package  704 . The second base end support  190  is formed in a substantial U-shape in a side view, facing the first base end support  166  in the direction of arrow Y. In this embodiment, the first base end support  166  and the second base end support  190  are included in one base end support (displacement regulation unit)  193 . 
     Specifically, the second base end support  190  includes a seventh wall  194 , an eighth wall  196 , and a ninth wall  198 . The seventh wall  194  projects in the direction of arrow Y 2  from an end of the second base  188  in the direction of arrow Z 2 . The eighth wall  196  projects from a projecting end of the seventh wall  194  in the direction of arrow Z 1 . The ninth wall  198  projects from a projecting end of the eighth wall  196  in the direction of arrow Y 1 . 
     Projecting lengths of the seventh wall  194  and the ninth wall  198  are substantially equal to the projecting lengths of the fourth wall  178  and the sixth wall  182  (see  FIG. 12 ). A predetermined gap is formed between the fifth wall  180  and the eighth wall  196 . The eighth wall  196  is provided with two second grooves (slits)  200  into which the first protruding portion  752  of the plunger  708  is inserted. The second grooves  200  are formed over the entire length of the eighth wall  196  in the direction of arrow Z. The second grooves  200  are spaced from each other in the direction of arrow X. In addition, each second groove  200  faces each first groove  184 . A projecting end face of the ninth wall  198  is fixed to the second base  188  with a fixing member (adhesive or the like). It should be noted that the ninth wall  198  may not be fixed to the second base  188 . 
     The needle support  192  is formed in a substantial U-shape in a side view, being placed on the first base end support  166  and the second base end support  190  in the opposite direction of the leading end support  164  (in the direction of arrow Z 2 ). Specifically, the needle support  192  includes a tenth wall  204 , an eleventh wall  206 , and a twelfth wall  208 . The tenth wall  204  projects in the direction of Y 2  from an end of the second base  188  in the direction of arrow Z 2 . The eleventh wall  206  projects from a projecting end of the tenth wall  204  in the direction of arrow Z 1 . The twelfth wall  208  projects from a projecting end of the eleventh wall  206  in the direction of arrow Y 1 . 
     Projecting lengths of the tenth wall  204  and the twelfth wall  208  are substantially equal to the projecting lengths of the first wall  168  and the third wall  172 . The tenth wall  204  is provided with two needle unit case supports  210  each functioning as a hole through which the needle unit case  762  of the needle package  704  is inserted. The needle unit case supports  210  are arranged side by side in the direction of arrow X. An interval between the twelfth wall  208  and the fourth wall  178  and an interval between the twelfth wall  208  and the ninth wall  198  are formed to be slightly larger than a thickness of the plunger flange  746 . 
     To the syringe package  10 B with such an arrangement, two prefilled syringes  702  are attached side by side in the direction of arrow X and two needle packages  704  are attached side by side in the direction of arrow X. In other words, one prefilled syringe  702  is attached to the syringe support hole  174 , the first groove  184 , and the second groove  200  placed in the direction of arrow X 1 , while the other prefilled syringe  702  is attached to the syringe support hole  174 , the first groove  184 , and the second groove  200  placed in the direction of arrow X 2 . Furthermore, one needle package  704  is attached to the needle unit case support  210  placed in the direction of arrow X 1 , while the other needle package  704  is attached to the needle unit case support  210  placed in the direction of arrow X 2 . 
     Specifically, the connection  720  of the prefilled syringe  702  is inserted into the syringe support hole  174 . This allows the third wall  172  to regulate displacement of the outer cylinder  712  in the direction of arrow X 1  with respect to the plunger  708  (the support  152 ). One second protruding portion  754  of the plunger  708  of the prefilled syringe  702  is inserted into the first groove  184 , while the other second protruding portion  754  of the plunger  708  is inserted into the second groove  200 . A first protruding portion  752  is disposed in a gap between the fifth wall  180  and the eighth wall  196 . This regulates displacement of the plunger  708  in the directions of arrows X and Y with respect to the support  152 . 
     A base end (outer cylinder flange  736 ) of the outer cylinder  712  of the prefilled syringe  702  is placed on the sixth wall  182  and the seventh wall  194  in the direction of arrow Z 1 . In other words, a base end surface of the outer cylinder  712  of the prefilled syringe  702  and the sixth wall  182  and the seventh wall  194  face each other in the direction of arrow Z. This allows the sixth wall  182  and the seventh wall  194  to regulate displacement of the outer cylinder  712  in the direction of arrow Z 2  with respect to the plunger  708  (support  152 ). 
     The plunger flange  746  is placed between the fourth wall  178  and the twelfth wall  208  and between the ninth wall  198  and the twelfth wall  208 . This arrangement regulates displacement of the plunger  708  toward the leading end (in the direction of arrow Z 1 ) with respect to the syringe body  705  (support  152 ). 
     Furthermore, the needle unit case  762  contacts the twelfth wall  208  while being inserted into the needle unit case support  210 . This arrangement allows the tenth wall  204  to regulate displacement of the needle package  704  in the directions of arrows X and Y with respect to the support  152 . It should be noted that displacement of the needle package  704  in the direction of arrow Z 2  with respect to the support  152  is regulated by the top surface  150   c  of the package body  150 . 
     The syringe package  10 B according to this embodiment shows effects similar to those shown by the syringe package  10 A according to the first embodiment. This embodiment is not limited to the above arrangement. The syringe package  10 B may house one or three or more prefilled syringe systems  700  together. 
     Third Embodiment 
     Next, a syringe package  10 C according to a third embodiment of the present invention will be described. As illustrated in  FIG. 14 , an outer surface of a sealing film  764  in a prefilled syringe system  700  of the syringe package  10 C is provided with a displayed information  765  visible and associated with a needle unit  760 . Examples of this information include a gauge (inside diameter), an outside diameter, and a length (projecting length from a needle hub  768 ) of a needle body  766 . 
     The syringe package  10 C includes a package unit  221 . The package unit  221  includes a box-shaped package body  220  and a support  222 . The package body  220  houses two sets of prefilled syringes  702  and needle packages  704 . The support  222  is provided inside the package body  220 . In other words, the syringe package  10 C houses two prefilled syringe systems  700  together. Each prefilled syringe system  700  is arranged similarly to the prefilled syringe system  700  according to the first embodiment. 
     The package body  220  is made from paper in a cuboid shape. It should be noted that the package body  220  may include a material other than paper such as resin. Specifically, the package body  220  includes a package base  224  and a cover  226  that is openable and joined to the package base  224 . The package base  224  is included in a bottom surface  220   a  and a side surface  220   b  of the package body  220 . The cover  226  is included in a top surface  220   c  of the package body  220  and a part of the side surface  220   b  in the direction of arrow Y 1 . In the example of  FIG. 14 , the package body  220  is elongated in the direction of arrow X, the bottom surface  220   a  is placed in the direction of arrow Z 1 , and the top surface  220   c  is placed in the direction of arrow Z 2 . 
     As illustrated in  FIGS. 14 to 16 , the support  222  includes a base  228  made from paper. The base  228  includes a rectangular base body  230  and a leg  232  extended from an outer edge of the base body  230 . The base body  230  is substantially equal to the bottom surface  220   a  of the package body  220  in size. In other words, the leg  232  contacts each side surface  220   b  of the package body  220 . The base body  230  is provided with two needle unit case supports  234  each of which supports the needle package  704  and two syringe supports  236  each of which supports the prefilled syringe  702 . 
     Each of the needle unit case supports  234  includes a needle unit case support hole  238  formed at one end of the base body  230  in a longitudinal direction (end in the direction of arrow X 1 ). The two needle unit case support holes  238  are placed at a predetermined interval in a width direction (the direction of arrow Y) of the base body  230 . A wall surface included in each needle unit case support hole  238  is provided with a plurality of protrusions  240  at equal intervals in a circumferential direction. The protrusions  240  are extended toward the center (radially inward) of the needle unit case support hole  238 . These protrusions  240  are to be inserted into recesses  792  of a needle unit case  762 . Accordingly, the number and positions of the protrusions  240  correspond to the number of the recesses  792  of the needle unit case  762 . 
     Each syringe support  236  includes a leading end support  242 , an intermediate support  244 , and a base end support  246 . The leading end support  242  is a hole into which a leading end of the prefilled syringe  702  is inserted. The intermediate support  244  is a hole into which an intermediate portion of the prefilled syringe  702  is inserted. The base end support  246  is a hole into which a plunger  708  of the prefilled syringe  702  is inserted. 
     Each leading end support  242  includes a first hole  248  into which a cap  714  of the prefilled syringe  702  is inserted and a second hole  250  that is linked to the first hole  248  in the direction of arrow X 2  and into which a leading end portion of the outer cylinder  712  is inserted. The first hole  248  is narrower (a width in the direction of arrow Y is narrower) than the second hole  250 . 
     Between the leading end support  242  and the intermediate support  244 , two first locking units (positional shift regulation units)  252  are provided. The first locking units  252  are respectively inserted into first opening portions  728  of the prefilled syringe  702 . In other words, while the prefilled syringe  702  is not attached to the support  222 , the first locking units  252  are brought into contact with each other and partition the leading end support  242  and the intermediate support  244 . Each first locking unit  252  locks a syringe body  705 . 
     The intermediate support  244  includes a third hole  254 , a fourth hole  256 , a fifth hole  258 , and a sixth hole  260 . Into the third hole  254 , inserted is a part of a leading end of the outer cylinder  712  that is close to a base end from the first opening portions  728 . The fourth hole  256  is wide and linked to the third hole  254  in the direction of arrow X 2 . The fifth hole  258  is linked to the fourth hole  256  in the direction of arrow X 2 , functioning as a hole into which the base end of the outer cylinder  712  is inserted. The sixth hole  260  is linked to the fifth hole  258  in the direction of arrow X 2 , functioning as a hole into which an outer cylinder flange  736  is inserted. Widths of the third hole  254  and the fifth hole  258  are substantially equal to a width of the second hole  250 . The fourth hole  256  has a size large enough to allow a user to insert his/her finger into a space outside the outer cylinder  712  while the outer cylinder  712  is inserted into the fourth hole  256 . A width of the sixth hole  260  is wider than the width of the fifth hole  258 . 
     The base end support  246  includes a seventh hole (groove)  262  linked to the sixth hole  260  in the direction of arrow X 2 , and an eighth hole  264  linked to the seventh hole  262  in the direction of arrow X 2 . Into the seventh hole  262 , a first protruding portion  752  of the plunger  708  is inserted, and into the eighth hole  264 , a plunger flange  746  is inserted. A width of the seventh hole  262  is slightly larger than a thickness of the first protruding portion  752 . In other words, between the sixth hole  260  and the seventh hole  262 , provided are two second locking units (displacement regulation units)  266  that cover a second protruding portion  754  from the direction of arrow Z 2  while the prefilled syringe  702  is attached to the support  222 . The seventh hole  262  is formed between the second locking units  266 . 
     To the syringe package  10 C with such an arrangement, two needle packages  704  are attached side by side in the direction of arrow Y and two syringes are attached side by side in the direction of arrow Y. Specifically, the needle unit case  762  of the needle package  704  is inserted into the needle unit case support hole  238 . This arrangement allows a wall surface included in the needle unit case support hole  238  to regulate displacement of the needle package  704  in the directions of arrows X and Y with respect to the support  222 . 
     In this state, as illustrated in  FIG. 15 , the protrusions  240  are inserted into the recesses  792  of the needle unit case  762 . This arrangement allows the protrusions  240  to regulate rotation of the needle package  704  around the axis. Accordingly, it is possible to hold the information visible and displayed on the outer surface of the sealing film  764  in a fixed orientation. Therefore, when opening the package body  220 , it is easy to visually check the displayed information  765  associated with the needle unit  760 . 
     Into the first opening portions  728  of the prefilled syringe  702 , the first locking units (leading end regulation units)  252  are inserted. Accordingly, the first locking units  252  regulate displacement of the outer cylinder  712  in the directions of arrows Y and Z with respect to the support  222 . In addition, the first locking units  252  regulate displacement of the outer cylinder  712  in the direction of arrow X with respect to the plunger  708  (the support  222 ). 
     Into the seventh hole  262 , the first protruding portion  752  of the plunger  708  of the prefilled syringe  702  is inserted. Accordingly, the second locking units  266  regulate displacement of the plunger  708  in the direction of arrow Y with respect to the support  222 . Furthermore, the second locking units  266  cover the second protruding portion  754  from the direction of arrow Z 2 . This arrangement regulates displacement of the plunger  708  in the direction of arrow Z 2  with respect to the support  222 . 
     A base end surface of the outer cylinder  712  and the second locking units  266  face each other in the direction of arrow X. This arrangement regulates displacement of the outer cylinder  712  in the direction of arrow X 2  with respect to the plunger  708  (support  222 ). The plunger flange  746  and the second locking units  266  face each other in the direction of arrow X. This arrangement regulates displacement of the plunger  708  in the direction of arrow X 1  with respect to the syringe body  705  (support  222 ). 
     The syringe package  10 C according to this embodiment shows effects similar to those shown by the syringe package  10 A according to the first embodiment. In addition, the syringe package  10 C shows effects similar to those shown by the syringe package  10 G according to a first reference example that will be described below. 
     This embodiment is not limited to the above arrangement. The syringe package  10 C may house one or three or more prefilled syringe systems  700  together. 
     In the syringe packages  10 A to  10 C, when not in use, the gasket  706  and the plunger  708  may not be connected to each other but in contact with each other, and when in use, the gasket  706  and the plunger  708  may be connected. Furthermore, in the syringe packages  10 A to  10 C, when not in use, the needle unit  760  may be connected to the connection  720  of the prefilled syringe  702 . 
     Fourth Embodiment 
     Next, a syringe package  10 D according to a fourth embodiment will be described. In the syringe package  10 D according to the fourth embodiment, the same components as those in the syringe package  10 C according to the third embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. 
     As illustrated in  FIGS. 17 to 19 , the syringe package  10 D includes a package insert case  362  that houses a package insert  360 . The package insert case  362  is housed inside a package body  220  together with a support  222 . 
     As illustrated in  FIG. 18 , the package body  220  includes a housing base (housing body)  224  and a cover  226 . The housing base  224  is provided with a fetch opening  223  in an upper portion of the package body  220 . The cover  226  closes the fetch opening  223 . A bottom surface (bottom wall)  220   a  and a side surface (peripheral wall)  220   b  are included in the housing base  224 . A top surface (top wall)  220   c  is included in the cover  226 . The cover  226  is formed in an integrated manner with the housing base  224 , being linked to an upper edge of a wall included in one side of the side surface  220   b . It should be noted that the cover  226  may be a member that is separable from the housing base  224 . 
     A needle unit case  762  is disposed closer to the top surface  220   c  than (an outer surface  705   s  of) a syringe body  705 , projecting closer to the cover  226  than the syringe body  705 . Specifically, in a housed state illustrated in  FIG. 19 , an upper surface of the needle unit case  762  (a surface  764   a  of a sealing film  764 ) is higher than the outer surface  705   s  of the syringe body  705 . 
     Being detachable, the sealing film  764  is disposed on the needle unit case  762  to close an opening portion of a case body  763 . The sealing film  764  is provided with a tab  764   b  that a user pinches when opening the needle unit case  762 . In this embodiment, as illustrated in  FIG. 19 , the tab  764   b  is bent along a side surface of the case body  763  on the side close to the package insert case  362 , and the tab  764   b  is detachably fixed to the side surface. As illustrated in  FIG. 18 , the surface  764   a  of the sealing film  764  may be provided with displayed information (such as size and expiration date)  765  associated with a needle unit  760 . A part or all of the displayed information  765  may be provided on a surface of the tab  764   b.    
     In  FIG. 18 , the package insert case  362  is a paper member formed in a flat cuboid shape, including a housing  364  (housing space) that houses the package insert  360 . It should be noted that the package insert case  362  may include a material other than paper such as resin. The housing  364  penetrates the package insert case  362  in a direction (the direction of arrow X) perpendicular to a thickness direction (the direction of arrow Z) of the package body  220 . 
     A length (dimension in the direction of arrow X) of the package insert case  362  is set to a length slightly shorter than a distance between the needle unit case  762  and a side portion in the direction of arrow X 2  inside the package body  220 . A width (dimension in the direction of arrow Y) of the package insert case  362  is set to be substantially equal to an internal width (dimension in the direction of arrow Y) of the housing base  224  of the package body  220 . A thickness (dimension in the direction of arrow Z) of the package insert case  362  is set to be substantially equal to a distance between the outer surface  705   s  of the syringe body  705  housed inside the package body  220  and the top surface  220   c  of the package body  220 . 
     As illustrated in  FIG. 18 , the package insert case  362  includes a pair of base walls  362   a  and  362   b  spaced from and facing each other in the thickness direction of the package body  220 , and a pair of side walls  362   c  and  362   d  that connects the pair of base walls  362   a  and  362   b . The housing  364  is a space surrounded by the pair of base walls  362   a  and  362   b  and the pair of side walls  362   c  and  362   d.    
     In  FIG. 19 , the package insert case  362  is disposed between the syringe body  705  and the top surface  220   c , being in contact with the syringe body  705  to inhibit movement of the prefilled syringe  702  inside the package body  220 . Specifically, one (upper) base wall  362   a  is in contact with an inner surface of the cover  226  of the package body  220 . The other (lower) base wall  362   b  is placed lower than a surface of the needle unit case  762  that faces the top surface  220   c  (lower than the surface  764   a  of the sealing film  764 ), being in contact with the outer surface  705   s  of the syringe body  705 . 
     As illustrated in  FIG. 18 , the package insert case  362  is provided with a flange opening  362   e . Specifically, the flange opening  362   e  is provided in the lower base wall  362   b . While the prefilled syringe  702  is housed, an outer cylinder flange  736  of the prefilled syringe  702  is inserted into the flange opening  362   e . In this embodiment, because the syringe package  10 D houses two prefilled syringes  702 , the syringe package  10 D is provided with two flange openings  362   e . The flange openings  362   e  communicate with the housing  364 . 
     The package insert  360  is an instruction manual that describes how to use a prefilled syringe system  700 . The package insert  360  may include a plurality of documents. Therefore, the package insert  360  may include documents other than the instruction manual. As illustrated in  FIG. 18 , the package insert  360  is, for example, folded and housed in the package insert case  362 . 
     In the related art, there is known a syringe system that is provided with a syringe and a needle unit and in which the needle unit is separated from the syringe in an initial state (at the time of product offering) and the needle unit is connected to the syringe when in use (for example, JP 5756793 B2) 
     This type of syringe system is offered to a user as a product while the syringe and a needle unit case that houses the needle unit are housed inside a box-like package. Typically, in the package, a package insert such as an instruction manual is stored in addition to the syringe system or the product. It is desirable that such a package be made compact and that the syringe inside the package be held at a predetermined position. 
     In the syringe package  10 D according to the fourth embodiment, the needle unit case  762  projects closer, than the syringe body  705 , to at least one wall (the top surface  220   c ) of the walls (the top surface  220   c  and the bottom surface  220   a ) facing each other in the package body  220 . The package insert case  362  is disposed between the syringe body  705  and one wall (the top surface  220   c ), being in contact with the outer surface  705   s  of the syringe body  705 . 
     Accordingly, the package insert case  362  is disposed in a space that is between the syringe body  705  and one wall (top surface  220   c ) of the package body  220  and that otherwise becomes a dead space. In addition, the package insert case  362  inhibits movement of the prefilled syringe  702  inside the package body  220 . The effective use of the dead space makes it possible to make the syringe package  10 D compact and to preferably hold a position of the prefilled syringe  702  inside the package body  220 . 
     In the fourth embodiment, a base end portion of the syringe body  705  is provided with the outer cylinder flange  736  projecting in a direction perpendicular to the axis of the syringe body  705 , and the package insert case  362  is provided with the flange opening  362   e  into which the outer cylinder flange  736  is inserted. This makes it is possible to enlarge the package insert case  362  while avoiding interference between the package insert case  362  and the outer cylinder flange  736 , which leads to a further effective use of the dead space. 
     Furthermore, in the fourth embodiment, the package body  220  includes the housing base  224  that is provided with the fetch opening  223  and the cover  226  that closes the fetch opening  223  and one wall (the top surface  220   c ) of the package body  220  is included in the cover  226 . Accordingly, when the cover  226  is opened, the package insert case  362  is exposed, which makes it easier for a user to find the package insert  360 . 
     Still further, in the fourth embodiment, the needle unit case  762  includes the case body  763  and the sealing film  764  that seals the case body  763 , and the sealing film  764  is provided with the tab  764   b  that the user pinches when opening the needle unit case  762 . The tab  764   b  is bent along the side surface of the case body  763  on the side close to the package insert case  362 , and the tab  764   b  is detachably fixed to the side surface (see  FIG. 19 ). This arrangement inhibits the sealing film  764  from being peeled from the case body  763  (from opening the needle unit case  762 ) due to vibration during, for example, transportation. In addition, when the package insert case  362  is taken out, it is possible to inhibit the sealing film  764  from being peeled from the package insert case  362 . 
     Unlike the above arrangement, the tab  764   b  may be overlapped with an outer surface of the package insert case  362  that faces the top surface  220   c . In other words, the tab  764   b  may be sandwiched between the top surface  220   c  and the package insert case  362  (the base wall  362   a ). According to this arrangement, even when the displayed information  765  (see  FIG. 18 ) on the needle unit  760  is provided on the surface of the tab  764   b , the displayed information  765  is not hidden by the package insert case  362 . Accordingly, it is possible for the user to quickly understand the information associated with the needle unit  760  when opening the package body  220 . 
     In the fourth embodiment, other components same as or similar to those in the third embodiment offer functions and effects similar to those obtained in the third embodiment. 
     Fifth Embodiment 
     A syringe package  10 E according to a fifth embodiment illustrated in  FIGS. 20 to 22  is provided with a prefilled syringe  702 , a needle package  704 , a support  370  that supports the prefilled syringe  702  and the needle package  704 , a package insert case  372  that houses a package insert  360 , and a package body  220  that houses the prefilled syringe  702 , the needle package  704 , the support  370 , and the package insert case  372 . The package body  220  according to the fifth embodiment is arranged similarly to the package body  220  according to the fourth embodiment. 
     In  FIG. 21 , the support  370  includes a first support member  374  and a second support member  376 . The first support member  374  and the second support member  376  are assembled, for example, by folding paper. The first support member  374  includes a rectangular base  374   a , a leading end support (leading end regulation unit)  374   b , and a first base end support  374   c . The base  374   a  is extended in an extension direction (the direction of arrow X) of the package body  220 . The leading end support  374   b  supports a leading end of the prefilled syringe  702 . The first base end support  374   c  supports a base end of the prefilled syringe  702 . 
     A width (dimension in the direction of arrow Y) of the base  374   a  is substantially equal to a distance between side portions facing each other in the direction of arrow Y in the package body  220 . The leading end support  374   b  projects upward from one end (end in the direction of arrow X 2 ) of the base  374   a . A surface of the leading end support  374   b  close to the first base end support  374   c  is provided with a syringe support hole  374   d  into which a connection  720  of the prefilled syringe  702  is inserted. In this embodiment, because the syringe package  10 E houses two prefilled syringes  702 , the syringe package  10 E is provided with two syringe support holes  374   d  at an interval in the direction of arrow Y. 
     The first base end support  374   c  projects upward from the other end (end in the direction of arrow X 1 ) of the base  374   a . A height of the first base end support  374   c  projecting from the base  374   a  is lower than a height of the leading end support  374   b  projecting from the base  374   a . The first base end support  374   c  is provided with a T-shaped first holding groove  374   e.    
     The first holding groove  374   e  includes a first slit  374   e   1  extended along the extension direction (the direction of arrow X) of the package body  220  and a second slit  374   e   2  extended in a direction (the direction of arrow Y) perpendicular to the first slit  374   e   1 . While the prefilled syringe  702  is housed, a first protruding portion  752  of a plunger  708  is inserted into the first slit  374   e   1 , and a plunger flange  746  is inserted into the second slit  374   e   2 . In the fifth embodiment, because two prefilled syringes  702  are housed, two first holding grooves  374   e  are provided at an interval in the direction of arrow Y. 
     The second support member  376  includes a second base end support  376   a  that supports the base end of the prefilled syringe  702  and a needle unit case support  376   b  that supports the needle package  704 . The second base end support  376   a  faces the first base end support  374   c  above the first base end support  374   c . While the prefilled syringe  702  is housed, a base end support (displacement regulation unit)  375  including the first base end support  374   c  and the second base end support  376   a  sandwiches a base end portion of the plunger  708 . 
     The second base end support  376   a  is provided with a T-shaped second holding groove  376   c . While the prefilled syringe  702  is housed, the base end portion of the plunger  708  (the first protruding portion  752  of a shaft  738  and the plunger flange  746 ) is inserted into the second holding groove  376   c . In the fifth embodiment, because two prefilled syringes  702  are housed, two second holding grooves  376   c  are provided at an interval in the direction of arrow Y. 
     In this manner, in the package body  220 , a leading end portion (connection  720 ) of the prefilled syringe  702  is inserted into the syringe support hole  374   d  provided in the leading end support  374   b  of the first support member  374 . Furthermore, a base end portion of the prefilled syringe  702  (the base end portion of the plunger  708 ) is inserted into the first holding groove  374   e  provided in the first base end support  374   c  and into the second holding groove  376   c  provided in the second base end support  376   a . Accordingly, a plurality of prefilled syringes  702  inside the package body  220  is held at predetermined positions by the support  370  provided with the first support member  374  and the second support member  376 . 
     An upper surface of the needle unit case support  376   b  is provided with a needle unit case support hole  376   d  into which a needle unit case  762  of the needle package  704  is inserted. In the fifth embodiment, because the two needle packages  704  are housed, two needle unit case support holes  376   d  are provided at an interval in the direction of arrow Y. 
     As illustrated in  FIG. 22 , the upper surface of the needle unit case support  376   b  is placed lower than an upper surface of the second base end support  376   a . The needle unit case support  376   b  supports the needle unit case  762  so that a needle body  766  of a needle unit  760  inside the needle unit case  762  is along a thickness direction (the direction of arrow Z) of the package body  220 . In other words, while the needle unit case  762  is housed inside the package body  220 , the needle body  766  is along the thickness direction of the package body  220 . 
     Being disposed closer to a top surface  220   c  than (an outer surface  705   s  of) a syringe body  705 , the needle unit case  762  projects closer to the top surface  220   c  than the syringe body  705 . Specifically, in the fifth embodiment, in a housed state illustrated in  FIG. 22 , an upper surface (a surface  764   a  of a sealing film  764 ) of the needle unit case  762  is higher than the outer surface  705   s  of the syringe body  705 . 
     In  FIG. 21 , the package insert case  372  is a paper member formed in a flat cuboid shape, including a housing  378  (housing space) that houses the package insert  360 . It should be noted that the package insert case  372  may include a material other than paper such as resin. The housing  378  penetrates the package insert case  372  in a direction (direction of arrow X) perpendicular to the thickness direction (direction of arrow Z) of the package body  220 . 
     A length (dimension in the direction of arrow X) of the package insert case  372  is set to be substantially equal to a distance between the leading end support  374   b  and the second base end support  376   a  inside the package body  220 . A width (dimension in the direction of arrow Y) of the package insert case  372  is set to be substantially equal to an internal width (dimension in the direction of arrow Y) of a housing body  224  of the package body  220 . A thickness (dimension in the direction of arrow Z) of the package insert case  372  is set to be substantially equal to a distance between the outer surface  705   s  of the syringe body  705  housed inside the package body  220  and the top surface  220   c  (cover  226 ) of the package body  220 . 
     The package insert case  372  includes a pair of base walls  372   a  and  372   b  spaced from and facing each other in the thickness direction of the package body  220 , and a pair of side walls  372   c  and  372   d  that connects the pair of base walls  372   a  and  372   b . The housing  378  is a space surrounded by the pair of base walls  372   a  and  372   b  and the pair of side walls  372   c  and  372   d.    
     In  FIG. 22 , the package insert case  372  is disposed between the syringe body  705  and the top surface  220   c , being in contact with the syringe body  705  to inhibit movement of the prefilled syringe  702  inside the package body  220 . Specifically, one (upper) base wall  372   a  is in contact with an inner surface of the top surface  220   c  of the package body  220 . The other (lower) base wall  372   b  is placed lower than a surface of the needle unit case  762  that faces the top surface  220   c  (lower than the surface  764   a  of the sealing film  764 ), being in contact with the outer surface  705   s  of the syringe body  705 . 
     As illustrated in  FIG. 21 , the package insert case  372  is provided with a flange opening  372   e . Specifically, in the fifth embodiment, the flange opening  372   e  is formed into a cut, being provided at an end of the lower base wall  372   b  in the direction of arrow X 1 . An outer cylinder flange  736  of the prefilled syringe  702  is inserted into the flange opening  372   e . In this embodiment, because the syringe package  10 E houses two prefilled syringes  702 , the syringe package  10 E is provided with two flange openings  372   e . The flange openings  372   e  communicate with the housing  378 . 
     As described above, in the syringe package  10 E according to the fifth embodiment, the needle unit case  762  projects closer, than the syringe body  705 , to at least one wall (the top surface  220   c ) of the walls (the top surface  220   c  and the bottom surface  220   a ) facing each other in the package body  220 . The package insert case  372  is disposed between the syringe body  705  and one wall (the top surface  220   c ), being in contact with the outer surface  705   s  of the syringe body  705 . 
     Accordingly, the package insert case  372  is disposed in a space that is between the syringe body  705  and one wall (top surface  220   c ) of the package body  220  and that otherwise becomes a dead space. In addition, the package insert case  372  inhibits movement of the prefilled syringe  702  inside the package body  220 . Even in the fifth embodiment, the effective use of the dead space makes it possible to make the syringe package  10 E compact and to preferably hold a position of the prefilled syringe  702  inside the package body  220 . 
     In the fifth embodiment, other components same as or similar to those in the third and fourth embodiments offer functions and effects similar to those obtained in the third and fourth embodiments. 
     Sixth Embodiment 
     A syringe package  10 F according to a sixth embodiment illustrated in  FIGS. 23 to 25  is provided with a prefilled syringe  702 , a needle package  704 , a support  152  that supports the prefilled syringe  702  and the needle package  704 , a package insert case  372  that houses a package insert  360 , and a package body  150  that houses the prefilled syringe  702 , the needle package  704 , the support  152 , and the package insert case  372 . In this syringe package body  10 F, an extension direction (longitudinal direction) of the package body  150  is along the vertical direction (the direction of arrow Z). 
     The package body  150  is a paper member formed in a flat cuboid shape. It should be noted that the package body  150  may include a material other than paper such as resin. As illustrated in  FIG. 23 , the package body  150  includes a bottom surface (bottom wall)  150   a , a side surface (peripheral wall)  150   b , and a top surface (top wall)  150   c . The side surface  150   b  includes a rectangular front wall  150   b   1  and a rear wall  150   b   2  included in the walls spaced from each other in a thickness direction (the direction of arrow Y) of the package body  150 . Both the front wall  150   b   1  and the rear wall  150   b   2  are formed in a flat plate shape and are parallel to each other when the package body  150  is unopened. 
     As illustrated in  FIG. 24 , the package body  150  includes a package base (housing body)  154  that is provided with a fetch opening  151  and a cover  156  that closes the fetch opening  151 . The fetch opening  151  includes a first opening  151   a  that opens upward (in the direction of arrow Z 2 ) and a second opening  151   b  that opens in the thickness direction of the package body  150  (in the direction of arrow Y 1 ). 
     The bottom surface  150   a  and the side surface  150   b  (except for a portion that covers the second opening  151   b ) are included in the package base  154 . Furthermore, in the top surface  150   c  and the front wall  150   b   1 , those portions that cover the second opening  151   b  are included in the cover  156 . The cover  156  is formed in an integrated manner with the package base  154 , being linked to an upper edge of the rear wall  150   b   2  included in one side of the side surface  150   b . It should be noted that the cover  156  may be a member that is separable from the package base  154 . 
     The support  152  is arranged similarly to the support  152  according to the second embodiment. 
     In the support  152  inside the package body  150 , a leading end portion (connection  720 ) of the prefilled syringe  702  is inserted into a syringe support hole  174  provided in a leading end support  164  of a first support member  158 . Furthermore, a base end portion of the prefilled syringe  702  (a base end portion of a plunger  708 ) is inserted into a first groove  184  provided in a first base end support  166  and into a second groove  200  provided in a second base end support  190 . Accordingly, a plurality of prefilled syringes  702  inside the package body  150  is held at predetermined positions by the support  152  provided with the first support member  158  and the second support member  160 . 
     In addition, a plunger flange  746  is engaged with an upper surface of the first base end support  166  and is held between the second base end support  190  and a needle support  192 . This arrangement holds axial positions of the plunger  708  with respect to a syringe body  705  and a gasket  706  (see  FIG. 12 ). 
     An upper surface of the needle support  192  is provided with a needle unit case support  210  into which a needle unit case  762  of the needle package  704  is inserted. In the sixth embodiment, because two needle packages  704  are housed, two needle unit case supports  210  are provided at an interval in the direction of arrow X. As illustrated in  FIG. 25 , in the package body  150 , the upper surface of the needle support  192  is spaced from the top surface  150   c  and faces the top surface  150   c.    
     The needle support  192  supports the needle unit case  762  so that a needle body  766  of a needle unit  760  inside the needle unit case  762  is along an extension direction (the direction of arrow Z) of the package body  150 . In other words, while the needle unit case  762  is housed inside the package body  150 , the needle body  766  is along the extension direction of the package body  150  and an extension direction of the prefilled syringe  702 . The needle unit case  762  is disposed closer to the front wall  150   b   1  than (an outer surface  705   s  of) the syringe body  705 , projecting closer to the front wall  150   b   1  than the syringe body  705 . 
     The package insert case  372  according to the sixth embodiment illustrated in  FIG. 24  is configured similarly to the package insert case  372  according to the fifth embodiment illustrated in  FIG. 22 , including a pair of base walls  372   a  and  372   b  and a pair of side walls  372   c  and  372   d . It should be noted that, in  FIG. 24 , the housing  378  penetrates the package insert case  372  along the extension direction (the direction of arrow Z) of the package body  150 . 
     A length (dimension in the direction of arrow Z) of the package insert case  372  is set to be substantially equal to a distance between the leading end support  164  and the second base end support  190  inside the package body  150 . A width (dimension in the direction of arrow X) of the package insert case  372  is set to be substantially equal to an internal width (dimension in the direction of arrow X) of the package base  154  of the package body  150 . A thickness (dimension in the direction of arrow Y) of the package insert case  372  is set to be substantially equal to a distance between the outer surface  705   s  of the syringe body  705  housed inside the package body  150  and the front wall  150   b   1  of the package body  150 . 
     In  FIG. 25 , the package insert case  372  is disposed between the syringe body  705  and the front wall  150   b   1 , being in contact with the syringe body  705  to inhibit movement of the prefilled syringe  702  inside the package body  150 . Specifically, one base wall  372   a  is in contact with an inner surface of the front wall  150   b   1  of the package body  150 . The other base wall  372   b  is placed closer to the rear wall  150   b   2  than the section closest to the front wall  150   b   1  of the needle unit case  762 , being in contact with the outer surface  705   s  of the syringe body  705 . 
     As described above, in the syringe package  10 F according to the sixth embodiment, the needle unit case  762  projects closer, than the syringe body  705 , to at least one wall (the front wall  150   b   1 ) of the walls (the front wall  150   b   1  and the rear wall  150   b   2 ) facing each other in the package body  150 . The package insert case  372  is disposed between the syringe body  705  and one wall (the front wall  150   b   1 ), being in contact with the outer surface  705   s  of the syringe body  705 . 
     Accordingly, the package insert case  372  is disposed in a space that is between the syringe body  705  and one wall (front wall  150   b   1 ) of the package body  150  and that otherwise becomes a dead space. In addition, the package insert case  372  inhibits movement of the prefilled syringe  702  inside the package body  150 . Even in the sixth embodiment, the effective use of the dead space makes it possible to make the syringe package  10 F compact and to preferably hold a position of the prefilled syringe  702  inside the package body  150 . 
     In the sixth embodiment, other components same as or similar to those in the second and fifth embodiments offer functions and effects similar to those obtained in the second and fifth embodiments. 
     REFERENCE EXAMPLE 
     Next, a syringe package  10 G according to a reference example will be described. In the syringe package  10 G according to the reference example, the same components as those in the syringe package  10 A according to the first embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. 
     As illustrated in  FIG. 26 , the syringe package  10 G according to the reference example includes a prefilled syringe system  700  and a package unit  411 . An outer surface of a film (sealing film)  764  in the prefilled syringe system  700  displays information visible and associated with a needle unit  760 . Examples of this information include a gauge (inside diameter), an outside diameter, and a length (projecting length from a needle hub  768 ) of a needle body  766 . 
     The package unit  411  includes a box-shaped package body  12  and a support  414  that is provided inside the package body  12  and supports the prefilled syringe system  700 . 
     The support  414  is formed by vacuum forming or pressure forming of a resin material. Examples of the resin material included in the support  414  are similar to the examples of the resin material included in the support  14 . 
     As illustrated in  FIGS. 26 to 29 , the support  414  includes a base  420 , a needle unit case support  422 , and a syringe support  424 . The base  420  is a plate-shaped member extended in a longitudinal direction of the package body  12 . The needle unit case support  422  supports a needle unit case  762  of a needle package  704 . The syringe support  424  supports a prefilled syringe  702 . The base  420  is placed on a bottom surface  12   a  of the package body  12 , being substantially equal to the bottom surface  12   a  in size. In other words, displacement of the base  420  in a direction parallel to the bottom surface  12   a  (the directions of arrows X and Y) is regulated by a side surface  12   b  of the package body  12 . That is, the base  420  holds positions of the needle unit case support  422  and the syringe support  424  inside the package body  12 . 
     The needle unit case support  422  has a plurality of projecting portions (second locking units)  426  projecting toward the side opposite to the bottom surface  12   a  (in the direction of arrow Z 2 ) from an end of one end of the base  420  (end in the direction of arrow X 1 ). Each projecting portion  426  has a shape corresponding to each recess  792  of the needle unit case  762 . The projecting portions  426  are respectively inserted into the recesses  792 . The plurality of projecting portions  426  is provided at equal intervals in a circumferential direction of the needle unit case  762 , corresponding to the recesses  792 . 
     The syringe support  424  includes a leading end support  432  that supports a leading end of the prefilled syringe  702  and a base end support  436  that supports a base end of the prefilled syringe  702 . 
     The leading end support  432  projects from the base  420  in the direction of arrow Z 2 , being formed in a substantial U-shape in a plan view. The leading end support  432  includes a first wall  438  and two second walls  440 . The first wall  438  is extended in a width direction (the direction of arrow Y) of the base  420 . The second walls  440  are extended in the direction of arrow X 2  from both ends of the first wall  438  in the direction of arrow Y. The first wall  438  is provided with a U-shaped recessed portion  442  in which a connection  720  of the prefilled syringe  702  is provided. A height of a wall surface  442   a  of the recessed portion  442  in the direction of arrow Z 2  (an interval between the base  420  and the wall surface  442   a ) is set to such a degree that allows a cap  714  not to contact the base  420 . In the second walls  440 , surfaces that face each other are provided with first projections (leading end projections)  444  projecting in a direction in which the first projections  444  approach each other. The first projections  444  are inserted into first opening portions  728  of an outer cylinder  712 . Each of the first projections  444  is extended in the direction of arrow X, corresponding to the shape of the first opening portions  728 . 
     The base end support  436  projects from the base  420  in the direction of arrow Z 2 . The base end support  436  includes two third walls  446 . The third walls  446  are extended in the direction of arrow X, facing each other while being spaced from each other in the direction of arrow Y. In the third walls  446 , surfaces close to the direction of arrow X 1  are provided with second projections (base end projections)  448  projecting in a direction in which the second projections  448  approach each other. The second projections  448  are inserted into third opening portions  732  of the outer cylinder  712 . Each of the second projections  448  is extended in the direction of arrow Z, corresponding to the shape of each third opening portion  732 . An end portion of each third wall  446  is provided with a fourth wall  450 . Each of the fourth walls  450  is extended in a direction in which both fourth walls  450  approach each other. An interval between the fourth walls  450  that face each other is smaller than the outer shape of a plunger flange  746  and has a size that allows insertion of a shaft  738  of a plunger  708 . 
     In the syringe package  10 G with such an arrangement, the needle package  704  is inserted into the inside of the projecting portions  426  of the needle unit case support  422 . Specifically, the plurality of projecting portions  426  is inserted into the recesses  792  of the needle unit case  762 . This allows the needle unit case support  422  to regulate displacement of the needle unit case  762  in the directions of arrows X and Y with respect to the support  414 . Furthermore, such an arrangement regulates rotation of the needle unit case  762  in the circumferential direction (about the axis) with respect to the support  414 . 
     On the other hand, the prefilled syringe  702  is attached to the leading end support  432  and the base end support  436 . Specifically, the connection  720  of the prefilled syringe  702  is inserted into the recessed portion  442  of the leading end support  432 , and the outer cylinder  712  of the prefilled syringe  702  is inserted into a space between the second walls  440  facing each other and a space between the third walls  446  facing each other, and the plunger  708  is inserted into a space between the fourth walls  450  facing each other. 
     Accordingly, the first wall  438  regulates displacement of the outer cylinder  712  in the direction of arrow X 1  with respect to the support  414  (plunger  708 ) of the outer cylinder  712 , the second walls  440  and the third walls  446  regulate displacement of the outer cylinder  712  in the direction of arrow Y with respect to the support  414 , and the fourth walls  450  regulate displacement of the outer cylinder  712  in the direction of arrow X 2  with respect to the support  414  (plunger  708 ). In addition, the fourth walls  450  regulate displacement of the plunger  708  in the direction of arrow Y with respect to the support  414  and regulates displacement of the plunger  708  (a plunger flange  746 ) in the direction of arrow X 2  with respect to the support  414  (outer cylinder  712 ). While the prefilled syringe  702  is attached to the syringe support  424 , the cap  714  is not in contact with the support  414  nor with the package body  12 . 
     JP 5756793 B2 discloses a prefilled syringe in which a prefilled syringe and a needle unit are separated from each other when not in use. Such a prefilled syringe is provided with an inner cylinder (barrel) filled with a drug in advance and a cap detachably provided at a leading end portion of the inner cylinder. Although the prefilled syringe is transported while being stored in a package body of a package unit, the cap may touch the package unit and may be loosened due to vibration during transportation. 
     According to this reference example, the cap  714  is not in contact with the package unit  411 , which inhibits the cap  714  from being loosened due to vibration during transportation. In addition, the first projections  444  of the support  414  are inserted into (engaged with) the first opening portions  728 . This arrangement inhibits the prefilled syringe  702  from being displaced with respect to the package unit  411  and the cap  714  from contacting the package the package unit  411  due to vibration during transportation. 
     Furthermore, because the two first opening portions  728  face each other, it is possible to effectively inhibit displacement of the leading end of the prefilled syringe  702  with respect to the package unit  411 . Still further, because the first opening portions  728  are through holes for a visual check of a drug, the arrangement of the outer cylinder  712  is simplified. 
     In this reference example, the second projections  448  of the support  414  are inserted into the third opening portions  732  placed on a base end of the outer cylinder  712 . Accordingly, the base end of the prefilled syringe  702  is inhibited from being displaced with respect to the package unit  411 . Furthermore, because the two third opening portions  732  face each other, it is possible to effectively inhibit displacement of the base end of the prefilled syringe  702  with respect to the package unit  411 . Still further, because the third opening portions  732  are through holes for assembling the plunger  708  inside the inner cylinder  710 , the arrangement of the outer cylinder  712  is simplified. 
     According to this reference example, a screwing action between the threaded portion  718  (see  FIG. 2 ) of the connection  720  provided at a leading end portion of the inner cylinder  710  and the threaded portion  716  (see  FIG. 2 ) of the cap  714  enables easy operation of attaching and detaching the cap  714  to and from the connection  720 . Even in this case, it is possible to inhibit the cap  714  from touching the package unit  411  and being loosened due to vibration during transportation. 
     In this reference example, the support  414  includes the base  420  that holds positions of the first projections  444  inside the package body  12 . This arrangement inhibits the cap  714  from touching the package body  12  due to vibration during transportation. 
     In addition, the needle unit case  762  is supported by the needle unit case support  422 . This arrangement inhibits displacement of the needle unit case  762  with respect to the package unit  411 . Furthermore, the needle unit case support  422  is provided on the base  420 . This arrangement effectively inhibits displacement of the needle unit case  762  with respect to the package unit  411 . 
     Still further, the projecting portions  426  of the needle unit case support  422  are inserted into the recesses  792  of the needle unit case  762 . Accordingly, projections  794  of the needle unit case  762  and the projecting portions  426  of the needle unit case support  422  are brought into contact with each other. This arrangement inhibits rotation of the needle unit case  762  about the axis with respect to the support unit  414 . Accordingly, it is possible to hold the information visible and displayed on the outer surface of the sealing film  764  in a fixed orientation. Therefore, when opening the package body  12 , it is easy to visually check the information associated with the needle unit  760 . 
     SUMMARY OF REFERENCE EXAMPLE 
     The syringe package  10 G according to the reference example is provided with the prefilled syringe system  700  that includes the prefilled syringe  702  and the needle unit  760  connectably separated from the prefilled syringe  702  when not in use. The syringe package  10 G is provided with the package unit  411  including the package body  12  that houses the prefilled syringe system  700  and the support  414  that is disposed inside the package body  12  and supports the prefilled syringe system  700 . 
     The prefilled syringe  702  includes the inner cylinder  710  filled with a drug, the outer cylinder  712  provided outside the inner cylinder  710 , and the sealing cap (cap  714 ) detachably attached to the leading end portion of the inner cylinder  710 . The recesses (first opening portions  728  and third opening portions  732 ) are formed on an outer periphery of the outer cylinder  712 . The support  414  is provided with the projections (first projections  444  and second projections  448 ) that engage with the recesses. Engagement between the projections and the recesses inhibits displacement of the prefilled syringe  702  with respect to the package unit  411 . The cap  714  is spaced from the package unit  411 . 
     According to such an arrangement, the cap  714  is not in contact with the package unit  411 , which inhibits the cap  714  from being loosened during transportation. In addition, the projections of the support  414  are engaged with the recesses of the outer cylinder  712 . This arrangement inhibits the prefilled syringe  702  from being displaced with respect to the package unit  411  and the cap  714  from contacting the package unit  411  due to vibration during transportation. 
     In the syringe package  10 G, the recesses include the leading end recesses (the first opening portions  728 ) placed on the leading end of the outer cylinder  712 , and the projections include the leading end projections (the first projections  444 ) engaged with the leading end recesses. 
     Such a configuration effectively inhibits displacement of the leading end portion (cap  714 ) of the prefilled syringe  702  with respect to the package unit  411 . 
     In the syringe package  10 G, a plurality of leading end recesses (first opening portions  728 ) is provided in the outer cylinder  712  while facing each other, and a plurality of leading end projections (first projections  444 ) is provided to be engaged with the leading end recesses (first opening portions  728 ). 
     Such a configuration effectively inhibits displacement of the leading end of the prefilled syringe  702  with respect to the package unit  411 . 
     In the syringe package  10 G, the leading end recesses (first opening portions  728 ) are through holes for a visual check of the drug inside the inner cylinder  710  from the outside of the outer cylinder  712 . 
     According to such an arrangement, because the through holes for a visual check of the drug are used, the arrangement of the outer cylinder  712  is simplified. 
     In the syringe package  10 G, the recesses include the base end recesses (the third opening portions  732 ) placed on the base end of the outer cylinder  712 , and the projections include the base end projections (second projections  448 ) engaged with the base end recesses. 
     Such an arrangement inhibits displacement of the base end of the prefilled syringe  702  with respect to the package unit  411 . 
     In the syringe package  10 G, a plurality of base end recesses (third opening portions  732 ) is provided in the outer cylinder  712  while facing each other, and a plurality of base end projections (second projections  448 ) is provided to be engaged with the base end recesses (third opening portions  732 ). 
     Such an arrangement effectively inhibits displacement of the base end of the prefilled syringe  702  with respect to the package unit  411 . 
     In the syringe package  10 G, the base end recesses (third opening portions  732 ) are through holes for assembling of the plunger  708  inside the inner cylinder  710 . 
     According to such an arrangement, because the through holes for assembling of the plunger are used, the arrangement of the outer cylinder  712  is simplified. 
     In the syringe package  10 G, the leading end portion of the inner cylinder  710  is provided with the connection  720  including the first threaded portion (threaded portion  718 ), and the cap  714  includes the second threaded portion (threaded portion  716 ) that is screwed into the first threaded portion. 
     According to such an arrangement, a screwing action between the first threaded portion and the second threaded portion enables easy operation of attaching and detaching the cap  714  to and from the connection  720 . Even in this case, it is possible to inhibit the cap  714  from touching the package unit  411  and being loosened due to vibration during transportation. 
     In the syringe package  10 G, the support  414  includes the base  420  that holds positions of the projections (the first projections  444  and the second projections  448 ) inside the package body  12 . 
     Such an arrangement inhibits the cap  714  from touching the package body  12  due to vibration during transportation. 
     In the syringe package  10 G, the prefilled syringe system  700  is provided with the needle package  704  including the needle unit  760  that enables puncture of a living body and the needle unit case  762  that houses the needle unit  760 . The support  414  includes the needle unit case support  422  that supports the needle unit case  762 . 
     Such an arrangement inhibits displacement of the needle package  704  with respect to the package unit  411 . 
     In the syringe package  10 G, the needle unit case support  422  is provided on the base  420 . 
     Such an arrangement effectively inhibits displacement of the needle package  704  with respect to the package unit  411 . 
     In the syringe package  10 G, the needle unit case  762  includes the case body  763  with the needle unit  760  provided therein and the sealing film  764  that seals the case body  763 . The outer surface of the sealing film  764  displays the information visible and associated with the needle unit  760 . An outer surface of the needle unit case  762  is provided with first locking units (the projections  794 ). The needle unit case support  422  includes the second locking units (the projecting portions  426 ) that are locked with the first locking unit to regulate displacement of the needle unit case  762  about the axis with respect to the support  414 . 
     Such an arrangement regulates rotation of the needle unit case  762  along the axis with respect to the package unit  411 , which makes it possible to hold the information visible and displayed on the outer surface of the sealing film  764  in a fixed orientation. Therefore, when opening the package body  12 , it is easy to visually check the information associated with the needle unit  760 . 
     The package according to the present invention is not limited to the embodiments described above, various configurations may be adopted without departing from the gist of the present invention. 
     REFERENCE NUMERAL LIST 
     
         
           10 A to  10 G SYRINGE PACKAGE 
           12 ,  150 ,  220  PACKAGE BODY 
           14 ,  90 ,  152 ,  222 ,  370 ,  414  SUPPORT 
           36 ,  106 ,  193 ,  246 ,  436  BASE END SUPPORT 
           700  PREFILLED SYRINGE SYSTEM 
           702  PREFILLED SYRINGE 
           704  NEEDLE PACKAGE 
           705  SYRINGE BODY 
           706  GASKET 
           708  PLUNGER 
           746  PLUNGER FLANGE 
           760  NEEDLE UNIT 
           762  NEEDLE UNIT CASE