Patent Publication Number: US-2010107380-A1

Title: Connection structure between container and supply tube, container, and supply tube

Description:
TECHNICAL FIELD 
     The present invention relates to a connection structure between a container and a supply tube, a container, and a supply tube for use in injecting a body fluid leakage-preventing agent into the throat of a corpse. 
     BACKGROUND ART 
     Generally, a corpse, before being buried or cremated, needs to be preserved to suppress decay, and to prevent the generation of bad smell, discoloration, deformation, etc. Corpse preserving methods include, for example, a method in which a corpse is refrigerated or frozen with dry ice, and a method in which a preservative is applied on a corpse. Other methods include those in which a member with a preservative immersed therein, or a member supporting a preservative thereon, is placed on or around a corpse. 
     A body fluid may leak to the outside of a corpse from the throat through the nasal cavity or the oral cavity. As a method for suppressing the leakage of the body fluid, a method is known in the art (see, for example, Patent Document 1) in which a liquefied refrigeration gas is supplied into a corpse through the nasal cavity or the oral cavity to discharge the residue, etc., left in the body through the rectum. Also known in the art is a method in which a body fluid leakage-preventing agent is supplied into the throat (see, for example, Patent Document 2). A device used in the method of Patent Document 2 includes a container storing a body fluid leakage-preventing agent therein, and a supply tube to be inserted into the throat. A connecting portion to be connected to the container is provided at the proximal end portion of the supply tube. After the container is connected to the connecting portion of the supply tube, the supply tube is inserted into the throat, and the body fluid leakage-preventing agent in the container is injected into the throat via the supply tube so as to prevent the leakage of the body fluid. 
     Patent Document 1: Japanese Laid-Open Patent Publication No. 10-45501 
     Patent Document 2: Japanese Laid-Open Patent Publication No. 2002-275001 
     DISCLOSURE OF THE INVENTION 
     Problems to be Solved by the Invention 
     While a liquefied refrigeration gas is injected into the nasal cavity or the oral cavity in the method disclosed in Patent Document 1, the liquefied refrigeration gas is not easily pushed into the corpse because the back of the nasal cavity or the oral cavity is often blocked by relaxed muscles. Particularly, where the liquefied refrigeration gas is injected into the oral cavity, the injection is very difficult because the back of the oral cavity is blocked by the tongue. Therefore, the method of Patent Document 1 may fail to completely prevent the leakage of the body fluid. 
     On the other hand, in the method disclosed in Patent Document 2, a supply tube is inserted into the throat of a corpse, with a body fluid leakage-preventing agent being injected by using the supply tube, and it is therefore possible to guide the body fluid leakage-preventing agent into the throat, in which regard the method is better than that of Patent Document 1. However, since the container and the supply tube are separate members, it is necessary to perform an operation of connecting these members together before the injection of the body fluid leakage-preventing agent. If the connection operation is not done securely, a body fluid leakage-preventing agent may possibly leak out from the connection portion between the container and the supply tube, or the supply tube may possibly be disconnected from the container during the injection operation, thus spraying around the body fluid leakage-preventing agent. 
     An object of the present invention is to ensure the connection between a container storing a body fluid leakage-preventing agent therein and a supply tube, and to prevent the body fluid leakage-preventing agent from leaking out from the connection portion, and to prevent the supply tube from being disconnected from the container. 
     Means for Solving the Problems 
     In order to achieve the object set forth above, a first aspect is directed to a connection structure between a container and a supply tube, wherein the container stores a body fluid leakage-preventing agent for a corpse, and the supply tube supplies the body fluid leakage-preventing agent into a throat of the corpse, wherein the container includes a storage section of which an inside is filled with the body fluid leakage-preventing agent, a nozzle portion provided in the storage section, and an engagement portion provided in the nozzle portion, the supply tube includes an inserted tube portion to be inserted toward the throat of the corpse, an injection hole is formed on a distal end side of the inserted tube portion in an insertion direction, a connecting portion to be connected to the nozzle portion of the container is provided on a proximal end side of the inserted tube portion, and an engagement portion to be engaged with an engagement portion of the nozzle portion is provided in the connecting portion. 
     A second aspect is according to the first aspect, wherein the inserted tube portion and the connecting portion of the supply tube are molded together. 
     A third aspect is according to the first aspect, wherein the inserted tube portion and the connecting portion of the supply tube are separately molded each by using a resin material, and then welded together into an integral piece. 
     A fourth aspect is according to one of the first to third aspects, wherein an outer periphery surface of the nozzle portion of the container is formed by a tapered surface with its diameter decreasing toward a distal end of the nozzle portion, the connecting portion of the supply tube has a cylindrical shape such as to surround the tapered surface of the nozzle portion, and an inner periphery surface of the connecting portion is formed so as to conform with the tapered surface. 
     A fifth aspect is according to the fourth aspect, wherein the engagement portion of the nozzle portion is provided on the tapered surface, and the engagement portion of the connecting portion is provided on the inner periphery surface of the connecting portion. 
     A sixth aspect is according to the fourth or fifth aspect, wherein one of the engagement portion of the nozzle portion and the engagement portion of the connecting portion is a projecting portion, and the other is a depressed portion that fits around the projecting portion. 
     A seventh aspect is according to the fourth or fifth aspect, wherein a through hole is formed in a peripheral wall portion of one of the nozzle portion and the connecting portion, and a protruding portion to be inserted into the through hole is formed on a peripheral wall portion of the other, the through hole and the protruding portion each being the engagement portion. 
     An eighth aspect is according to the sixth aspect, wherein the depressed portion is a groove portion, and the projecting portion is a protruding portion to be inserted into the groove portion. 
     A ninth aspect is according to the fourth or fifth aspect, wherein a peripheral wall portion of one of the nozzle portion and the connecting portion is provided with a first groove portion extending in a circumferential direction in an axially intermediate portion thereof, and a second groove portion continuously extending with the first groove portion and extending in an axial direction along the peripheral wall portion, and a peripheral wall portion of the other is provided with a pin portion to be inserted in the first groove portion and the second groove portion. 
     A tenth aspect is according to the fourth or fifth aspect, wherein a peripheral wall portion of one of the nozzle portion and the connecting portion is provided with a first depressed portion extending in a circumferential direction in an axially intermediate portion thereof, and a second depressed portion continuously extending with the first depressed portion and extending in an axial direction along the peripheral wall portion, and a peripheral wall portion of the other is provided with a pin portion to be inserted in the first depressed portion and the second depressed portion. 
     An eleventh aspect is according to one of the first to tenth aspects, wherein a cap for closing a distal end opening of the nozzle portion of the container is engaged with the engagement portion of the nozzle portion. 
     A twelfth aspect is according to one of the first to eleventh aspects, wherein the storage section of the container is a cylindrical portion of a syringe, and a piston for pushing out the body fluid leakage-preventing agent is inserted into the cylindrical portion of the syringe. 
     A thirteenth aspect is according to one of the first to twelfth aspects, wherein the distal end side of the inserted tube portion of the supply tube is curved. 
     A fourteenth aspect is according to one of the first to thirteenth aspects, wherein a tapered portion whose diameter decreases toward a distal end may be provided on the distal end side of the inserted tube portion of the supply tube. 
     A fifteenth aspect is according to one of the first to fourteenth aspects, wherein a thickness of the inserted tube portion of the supply tube is set to be smaller than a thickness of the connecting portion. 
     A sixteenth aspect is according to one of the first to fifteenth aspects, wherein the supply tube is provided with a mark indicating an amount of insertion of the inserted tube portion into the throat. 
     A seventeenth aspect is according to one of the first to fifteenth aspects, wherein the supply tube is provided with a stopper that abuts on a portion of the corpse when the injection hole of the inserted tube portion inserted toward the throat reaches a predetermined position. 
     An eighteenth aspect is according to one of the first to fifteenth aspects, wherein the supply tube is provided with a mark indicating an amount of insertion and/or a stopper for controlling the amount of insertion to be a predetermined amount when the inserted tube portion is inserted from a nasal cavity toward the throat, and a mark indicating an amount of insertion and/or a stopper for controlling the amount of insertion to be a predetermined amount when the inserted tube portion is inserted from an oral cavity toward the throat. 
     A nineteenth aspect is according to one of the first to fifteenth aspects, wherein the supply tube is provided with a marking member indicating an amount of insertion of the inserted tube portion into the throat. 
     A twentieth aspect is according to one of the first to fifteenth aspects, wherein the connection structure includes: a first inserted tube portion to be inserted from a nasal cavity toward the throat; and a second inserted tube portion to be inserted from an oral cavity toward the throat. 
     A twenty-first aspect is according to one of the first to twentieth aspects, wherein a plurality of the injection holes of the supply tube are formed in a peripheral wall portion of the inserted tube portion on the distal end side thereof. 
     A twenty-second aspect is directed to a container to which a supply tube for supplying a body fluid leakage-preventing agent into a throat of a corpse is connected, the container including: a storage section filled with the body fluid leakage-preventing agent; a nozzle portion provided in the storage section; and an engagement portion provided in the nozzle portion, the nozzle portion being connected to a connecting portion provided in the supply tube, wherein the engagement portion of the nozzle portion is engaged with an engagement portion of the connecting portion. 
     A twenty-third aspect is directed to a supply tube connected to a container storing a body fluid leakage-preventing agent for a corpse, including an inserted tube portion to be inserted toward a throat of the corpse, wherein an injection hole is formed on a distal end side of the inserted tube portion in an insertion direction, a connecting portion to be connected to a nozzle portion provided in the container is provided on a proximal end side of the inserted tube portion, and the connecting portion is provided with an engagement portion to be engaged with an engagement portion of the nozzle portion. 
     “Throat” as used herein refers to what is commonly called “the throat”, and includes the pharynx, the larynx, and the vicinity thereof. 
     Before the body fluid leakage-preventing agent is injected from the injection hole of the inserted tube portion of the supply tube into the throat, the distal end portion of the inserted tube portion may reach the throat or may reach deeper than the throat. If the distal end portion of the inserted tube portion has reached deep in the throat, an injection hole can be opened at a position closer to the proximal end than the distal end portion of the inserted tube portion so that this injection hole is positioned in the throat. 
     The inserted tube portion of the supply tube may be inserted to a position before the throat, so that the body fluid leakage-preventing agent discharged from the injection hole of the inserted tube portion is allowed to flow into the throat. 
     The body fluid leakage-preventing agent may be an agent disclosed in Japanese Laid-Open Patent Publication No. 2002-275001, e.g., a body fluid leakage-preventing agent in which a superabsorbent polymer powder capable of absorbing the body fluid is dispersed in a viscous fluid. A body fluid leakage-preventing agent in which the superabsorbent polymer powder is dispersed in a cream-like base agent or a mousse-like base agent may also be used. 
     The body fluid leakage-preventing agent may also be one that is obtained by wrapping the superabsorbent polymer powder in a deformable bag. In such a case, the superabsorbent polymer wrapped in the bag is pushed out from the container through the supply tube. 
     EFFECTS OF THE INVENTION 
     According to the first aspect, the container and the supply tube can be connected together by engaging the engagement portion provided in the connecting portion of the supply tube with the engagement portion of the nozzle portion of the container. Thus, by engaging the engagement portion of the container with the engagement portion of the supply tube, it is possible to ensure the connection between the container and the supply tube. Therefore, during the operation of injecting the body fluid leakage-preventing agent into a corpse, it is possible to prevent the body fluid leakage-preventing agent from leaking out from the connection portion, and to prevent the supply tube from coming off the container. 
     According to the second aspect, molding together the inserted tube portion and the connecting portion of the supply tube eliminates the need for an adhesive, which is used when they are molded separately. Thus, no adhesive will run over from between the inserted tube portion and the connecting portion into the inner passage of the inserted tube portion, thereby preventing the inner passage from being closed by an adhesive. 
     According to the third aspect, the inserted tube portion and the connecting portion of the supply tube can be made into an integral piece without using an adhesive, thereby avoiding the problems associated with the use of an adhesive. The hardness and/or the material can be varied between the inserted tube portion and the connecting portion, thus improving the freedom in designing the supply tube. 
     According to the fourth aspect, with the container and the supply tube connected together, the inner periphery surface of the connecting portion of the supply tube is fit around the tapered surface of the nozzle portion. Thus, the tapered surface of the nozzle portion and the inner periphery surface of the connecting portion can be brought into close contact with each other. Therefore, it is possible to increase the liquid impermeability. 
     According to the fifth aspect, with the inner periphery surface of the connecting portion of the supply tube fit around the tapered surface of the nozzle portion, the engagement portions are engaged with each other. Thus, it is possible to better prevent the supply tube from coming off the container. 
     According to the sixth to eighth aspects, the engagement portions can be engaged with each other in a simple operation. 
     According to the ninth aspect, when the nozzle portion is inserted into the connecting portion, the pin portion is inserted into the second groove portion, and when the pin portion reaches the proximal end of the second groove portion, the nozzle portion is rotated around the axial line thereof with respect to the connecting portion, thus inserting the pin portion into the first groove portion. Thus, the pin portion and the first groove portion are engaged with each other, making it unlikely that the connecting portion comes off the nozzle portion. By the rotation operation, the tapered surface of the nozzle portion and the inner periphery surface of the connecting portion can be brought more strongly into close contact with each other. Thus, it is possible to improve the liquid impermeability between the nozzle portion and the connecting portion. Moreover, the supply tube can be pulled off the container by performing an operation opposite to the operation described above, thereby improving the operability. Note that when the nozzle portion is connected to the connecting portion, the connecting portion may be rotated with respect to the nozzle portion. 
     According to the tenth aspect, as in the ninth aspect, the pin portion and the first depressed portion are engaged with each other, thereby making it unlikely that the connecting portion comes off the nozzle portion, and improving the liquid impermeability between the nozzle portion and the connecting portion, and it is also possible to improve the operability in pulling the supply tube off the container. 
     According to the eleventh aspect, since the cap for closing the distal end opening of the nozzle portion is engaged with the engagement portion of the nozzle portion, it is possible to prevent the body fluid leakage-preventing agent in the container from inadvertently leaking out before use. 
     According to the twelfth aspect, the body fluid leakage-preventing agent can be reliably held in the syringe before use, and the body fluid leakage-preventing agent can be reliably injected into the throat by a simple operation of pushing the piston into the syringe. 
     According to the thirteenth aspect, since the distal end side of the inserted tube portion of the supply tube is curved, when the inserted tube portion is inserted toward the throat from the nasal cavity or the oral cavity of a corpse, for example, it can be smoothly inserted so as to conform with the curved shape of the area into the throat of the corpse. Thus, the operation of inserting the inserted tube portion can be performed with a light force and quickly. 
     According to the fourteenth aspect, since the tapered portion is provided on the distal end side of the inserted tube portion of the supply tube, when the inserted tube portion of the supply tube is inserted into the throat from the nasal cavity or the oral cavity, for example, the distal end portion of the inserted tube portion is less likely to be stuck on the inner wall of the nasal cavity or the oral cavity. Thus, the inserted tube portion can be smoothly inserted into the throat. 
     According to the fifteenth aspect, it is possible to make the inserted tube portion soft, while sufficiently ensuring a rigidity of the connecting portion of the supply tube to thereby ensure the connection between the container and the nozzle portion. By making the inserted tube portion soft, the inserted tube portion, when being inserted, can easily deform so as to conform with the curved shape of the area into the throat of the corpse, thus improving the insertion operability. 
     According to the sixteenth aspect, when the inserted tube portion of the supply tube is inserted toward the throat, it is possible to easily determine when to stop the insertion operation. Thus, the inserted tube portion can be reliably inserted into the throat without requiring skills of the operator. 
     According to the seventeenth aspect, since the stopper is provided on the supply tube, when the inserted tube portion is inserted toward the throat, the operator can insert the inserted tube portion to a predetermined position by stopping the insertion operation at, or slightly before, the point where the stopper contacts the corpse. Thus, the inserted tube portion can be reliably inserted into the throat to inject the body fluid leakage-preventing agent therethrough without requiring skills of the operator. 
     According to the eighteenth aspect, a single supply tube can be used both for the insertion into the throat through the nasal cavity and for the insertion into the throat through the oral cavity, thereby improving the versatility. 
     According to the nineteenth aspect, the supply tube can be shared between when the marking member is used and when it is not used. 
     According to the twentieth aspect, since different supply tubes suitable for the nasal cavity use and the oral cavity use are provided, the body fluid leakage-preventing agent can be injected either way as necessary. 
     According to the twenty-first aspect, when some of the injection holes of the inserted tube portion are blocked by the mucous membrane in the throat, or the like, the body fluid leakage-preventing agent can be reliably injected into the throat through other injection holes. 
     According to the twenty-second and twenty-third aspects, by engaging the engagement portion of the container and the engagement portion of the supply tube with each other, it is possible to ensure the connection between the container and the supply tube. Thus, it is possible to prevent the body fluid leakage-preventing agent from leaking out from the connection portion, and to prevent the supply tube from coming off the container. 
     By injecting the body fluid leakage-preventing agent into the throat and keeping it in the throat as described above, it is possible to prevent the body fluid leakage. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  A cross-sectional view showing a supply tube according to Embodiment 1. 
         FIG. 2  A side view showing a supply tube according to Embodiment 1. 
         FIG. 3  A cross-sectional view showing a container according to Embodiment 1. 
         FIG. 4  A side view showing a container according to Embodiment 1. 
         FIG. 5  An enlarged cross-sectional view showing a connection portion between a container and a supply tube. 
         FIG. 6  An enlarged view showing the inside of W in  FIG. 5 . 
         FIG. 7  A diagram illustrating an embalming device being used, to which a connection structure between a container and a supply tube according to Embodiment 1 is applied. 
         FIG. 8  A view equivalent to  FIG. 6  for a variation of Embodiment 1. 
         FIG. 9  A perspective view showing a supply tube according to Embodiment 2. 
         FIG. 10  A view equivalent to  FIG. 1  for Embodiment 2. 
         FIG. 11  A side view showing a connecting portion and a nozzle portion according to Variation  1  of Embodiment 2. 
         FIG. 12  A view equivalent to  FIG. 11  for Variation  2  of Embodiment 2. 
         FIG. 13  A cross-sectional view for Variation  3  of Embodiment 2, showing a state where a cap is put on a nozzle portion. 
         FIG. 14  A view equivalent to  FIG. 13  for Variation  4  of Embodiment 2. 
         FIG. 15  A view equivalent to  FIG. 1  for Variation  5  of Embodiment 2. 
         FIG. 16  A cross-sectional view showing a proximal end side of a supply tube according to Variation  6  of Embodiment 2. 
         FIG. 17  A view equivalent to  FIG. 16  for Variation  7  of Embodiment 2. 
         FIG. 18  A cross-sectional view showing a nozzle portion according to Variation  7  of Embodiment 2. 
         FIG. 19  A cross-sectional view showing, on an enlarged scale, a connection portion between a container and a supply tube according to Variation  7  of Embodiment 2. 
         FIG. 20  A cross-sectional view showing a distal end side of a supply tube according to Variation  8  of Embodiment 2. 
         FIG. 21  A view equivalent to  FIG. 20  for Variation  9  of Embodiment 2. 
         FIG. 22  A view equivalent to  FIG. 20  for Variation  10  of Embodiment 2. 
         FIG. 23  A view equivalent to  FIG. 7  for Embodiment 3. 
         FIG. 24  A view equivalent to  FIG. 9  for Embodiment 3. 
         FIG. 25  A view equivalent to  FIG. 9  for Variation  1  of Embodiment 3. 
         FIG. 26  A view equivalent to  FIG. 9  for Variation  2  of Embodiment 3. 
         FIG. 27  A view equivalent to  FIG. 24  for Embodiment 4. 
     
    
    
     DESCRIPTION OF REFERENCE NUMERALS 
     
         
         
           
               1  Embalming device 
               2  Body fluid leakage-preventing agent 
               3  Container 
               4 ,  31  Supply tube 
               10  Syringe 
               11  Piston 
               12  Storage section 
               13  Nozzle portion 
               13   a  Opening 
               14  Protruding portion (engagement portion) 
               15  Inserted tube portion 
               16  to  18  First to third injection holes 
               20 ,  34  Connecting portion 
               22  Stopper (mark) 
               23  Groove portion (engagement portion) 
               25  Cap 
               30  Through hole (engagement portion) 
               35  Through hole (engagement portion) 
               38  Stopper 
               40  First groove portion 
               41  Second groove portion 
               42  Pin portion 
           
         
       
    
     BEST MODE FOR CARRYING OUT THE INVENTION 
     Preferred embodiments of the present invention will now be described with reference to the drawings. Note that the following description of preferred embodiments is merely illustrative of the present invention, and is not intended to limit the present invention itself or the application thereof. 
     First Embodiment 
       FIG. 7  is a diagram illustrating an embalming device  1  being used, in which a connection structure Y between a container and a supply tube according to Embodiment 1 of the present invention is employed. 
     The embalming device  1  includes a container  3  for storing a body fluid leakage-preventing agent  2  for a corpse, and a supply tube  4  for supplying the body fluid leakage-preventing agent  2  into the throat B of a corpse. The container  3  includes a syringe  10  and a piston  11 . The syringe  10  includes a cylindrical storage section  12  of which the inside is filled with the body fluid leakage-preventing agent  2 , and a nozzle portion  13  provided in the storage section  12 , as shown in  FIG. 3 . 
     The supply tube  4  includes an inserted tube portion  15  to be inserted from the nasal cavity A toward the throat B, as shown in  FIGS. 1 and 2 . The inserted tube portion  15  has a circular cross section. First, second and third injection holes  16 ,  17  and  18  are formed on the distal end side (the left side in  FIGS. 1 and 2 ) of the inserted tube portion  15  in the insertion direction. A cylindrical intermediate portion  19  is provided on the proximal end portion (the right side in  FIGS. 1 and 2 ) of the inserted tube portion  15 . A connecting portion  20  to be connected to the nozzle portion  13  of the container  3  is provided in a proximal end portion of the intermediate portion  19 . The inserted tube portion  15 , the intermediate portion  19  and the connecting portion  20  are molded together by using a flexible synthetic resin such as vinyl chloride. 
     The inserted tube portion  15  is in an elongated shape. The inserted tube portion  15  is so flexible that it can be deformed in conformity with the inner shape from the nasal cavity A to the throat B and is so rigid that an inner passage R of the inserted tube portion  15  will not collapse when inserted into the nasal cavity A. The first injection hole  16  is opened at the distal end surface of the inserted tube portion  15  in the insertion direction, as shown in  FIG. 1 . Two of the second injection holes  17  and  17  are opened, 180° apart from each other in the circumferential direction, in a peripheral wall portion of the inserted tube portion  15  that is away from the distal end surface thereof toward the proximal end side. Two of the third injection holes  18  and  18  are opened, 180° apart from each other, in a peripheral wall portion of the inserted tube portion  15  that is further away from the second injection holes  17  and  17  toward the proximal end side. The opening positions of the second injection holes  17  and  17  and the opening positions of the third injection holes  18  and  18  are shifted by 90° from each other in the circumferential direction of the inserted tube portion  15 . The first injection hole  16  is in a circular shape, and the second and third injection holes  17  and  18  are in a generally elliptical shape. 
     The longer axis dimension of the second and third injection holes  17  and  18  is set to 4 mm, and the shorter axis dimension thereof is set to 3 mm. The centers of the second injection holes  17  are 10 mm away from the distal end surface of the inserted tube portion  15  toward the proximal end side. The centers of the third injection holes  18  are 22 mm away from the distal end surface of the inserted tube portion  15  toward the proximal end side. 
     The first to third injection holes  16  to  18  are not limited to the embodiment above as long as the body fluid leakage-preventing agent  2  in the inserted tube portion  15  can be injected therethrough into the throat B. That is, the shape, the number and the opening positions of the first to third injection holes  16  to  18  can be determined arbitrarily, depending on various conditions such as the outer diameter and the inner diameter of the inserted tube portion  15 , the elasticity of the inserted tube portion  15 , and the type and the fluidity of the body fluid leakage-preventing agent  2  flowing through the inner passage R. For example, the opening areas of the second and third injection holes  17  and  18  may be different from each other. The second and third injection holes  17  and  18  may be in a circular shape. Moreover, one or two of the first to third injection holes  16  to  18  may be omitted. Although not shown, another injection hole may be opened further toward proximal end side than the third injection holes  18  of the inserted tube portion  15 . 
     The spacing between the centers of the second injection holes  17  and the distal end surface of the inserted tube portion  15  is preferably 6 mm or more and 15 mm or less. The centers of the second injection holes  17  and the centers of the third injection holes  18  are preferably spaced apart from each other in the axial direction of the inserted tube portion  15  by a distance in the range of 4 mm or more and 10 mm or less. By determining the sizes and the positions of the second and third injection holes  17  and  18  as described above, the body fluid leakage-preventing agent  2  in the inserted tube portion  15  can be reliably injected into the throat B. 
     The outer diameter of the inserted tube portion  15  on the distal end side is set to 5.0 mm, and the inner diameter thereof is set to 3.5 mm. The outer diameter and the inner diameter of the inserted tube portion  15  gradually increase from the distal end portion toward the proximal end portion. This is to take into consideration the mold releasability in the mold process of the inserted tube portion  15 . 
     The outer diameter of the inserted tube portion  15  is preferably 2.5 mm or more and 8.0 mm or less. The inner diameter of the inserted tube portion  15  is preferably set to be smaller than the outer diameter by a length in the range of 0.6 mm or more and 2.4 mm or less. The upper limit of the outer diameter of the inserted tube portion  15  is set to 8.0 mm or less because the inserted tube portion  15  will not be easily inserted into the nasal cavity A if the outer diameter is greater than 8.0 mm. The lower limit of the outer diameter of the inserted tube portion  15  is set to 2.5 mm or less because the inner passage R will be narrowed to inhibit the flow of the body fluid leakage-preventing agent  2  therethrough if the outer diameter is smaller than 2.5 mm. That is, by setting the outer diameter and the inner diameter of the inserted tube portion  15  as described above, it is possible to improve the operability in inserting the inserted tube portion  15  through the nasal cavity A and the operability in injecting the body fluid leakage-preventing agent  2  therethrough. 
     The inner diameter of the intermediate portion  19  is set to be equal to the inner diameter of the proximal end portion of the inserted tube portion  15 . The inner periphery surface of the intermediate portion  19  smoothly connects to the inner periphery surface of the inserted tube portion  15 . The outer diameter of the intermediate portion  19  is set to be greater than the outer diameter of the inserted tube portion  15 , and gradually increases toward the connecting portion  20 . The outer periphery surface of the intermediate portion  19  smoothly connects to the outer periphery surface of the connecting portion  20 . The thickness of the intermediate portion  19  is set to be greater than the thickness of the inserted tube portion  15 . 
     The connecting portion  20  has a cylindrical shape such as to surround the nozzle portion  13  of the container  3 . The distal end portion of the connecting portion  20  (the side on which it continuously extends to the intermediate portion  19 ) is molded together with the proximal end portion of the intermediate portion  19 . The inner diameter of the connecting portion  20  is set to be greater than the inner diameter of the intermediate portion  19 , and specifically corresponds to the outer diameter of the nozzle portion  13 . Therefore, a step portion  21  is formed between the inner periphery surface of the intermediate portion  19  and the inner periphery surface of the connecting portion  20 , and the thickness of the connecting portion  20  is smaller than the thickness of the intermediate portion  19 . The thickness of the connecting portion  20  is greater than the thickness of the inserted tube portion  15 . The depth of the step portion  21  is set to be generally equal to the thickness of the nozzle portion  13 , as shown in  FIG. 5 , so that the inner periphery surface of the nozzle portion  13  continuously extends with the inner periphery surface of the intermediate portion  19 , with the nozzle portion  13  inserted in the connecting portion  20 . 
     The inner periphery surface of the connecting portion  20  is formed so as to flare toward the proximal end thereof, and is formed by an engagement surface  20   a  to be engaged with the outer periphery surface of the nozzle portion  13 . A groove portion (an engagement portion)  23  extending in the circumferential direction is provided in an axially intermediate portion of the engagement surface  20   a . The groove portion  23  continuously extends in a ring shape around the entire circumference of the engagement surface  20   a.    
     A chamfered portion  20   c , which is chamfered, is formed on the inner periphery surface of the proximal end portion of the connecting portion  20 . Due to the chamfered portion  20   c , the inner diameter of the proximal end portion of the connecting portion  20  is increased. This enables the nozzle portion  13  of the syringe  10  to be easily inserted into the connecting portion  20 . 
     A stopper  22  is formed together with the inserted tube portion  15 , the stopper  22  extending in the circumferential direction while protruding in the radially outward direction from the vicinity of the boundary between the inserted tube portion  15  and the intermediate portion  19 . The stopper  22  is positioned so that the stopper  22  abuts on the nose tip A 1  when the first to third injection holes  16  to  18  of the inserted tube portion  15  reach the throat B. Note that the position of the stopper  22  may be determined so that the stopper  22  abuts on the nose tip A 1  when the distal end portion of the inserted tube portion  15  is located in the vicinity of the throat B. The shape of the stopper  22  is not limited to that described above, but may be a shape that extends interruptedly in the circumferential direction of the inserted tube portion  15 , or a projecting shape that is protruding from a portion along the circumference of the inserted tube portion  15 . The stopper  22  may be formed at another position of the inserted tube portion  15  on the proximal end side, or on the intermediate portion  19  or the connecting portion  20 . 
     Instead of the stopper  22 , a mark (marking) indicating the amount of insertion of the inserted tube portion  15  into the throat B may be provided. The position of the mark may be determined as with the stopper  22 . The stopper  22  may be used as a mark. A plurality of marks may be provided at intervals in the axial direction of the inserted tube portion  15 . A mark may be a projecting portion, a depressed portion, or the like, or may be letters, a line, or the like. 
     The syringe  10  is an integral molded piece of a resin material. As shown in  FIGS. 3 and 4 , the nozzle portion  13  extends along a straight line, with the axial line thereof being shifted from the axial line of the syringe  10 . An opening  13   a , through which the body fluid leakage-preventing agent  2  is discharged, is formed at the tip of the nozzle portion  13 . The outer periphery surface of the nozzle portion  13  is formed by a tapered surface  13   b  with the diameter decreasing toward the distal end side, and the shape of the tapered surface  13   b  is determined so that it extends to conform with the engagement surface  20   a  of the connecting portion  20  of the supply tube  4  and so that it fits to the engagement surface  20   a . Therefore, as the nozzle portion  13  is inserted in the connecting portion  20  of the supply tube  4 , the engagement surface  20   a  and the tapered surface  13   b  are in close contact with each other along the entire circumference, thus ensuring a sufficient liquid impermeability. 
     Two protruding portions (engagement portions)  14  and  14  are formed, spaced apart from each other in the circumferential direction, on the outer periphery surface of the axially intermediate portion of the nozzle portion  13 . As shown in  FIG. 6 , the protruding portions  14  and  14  are arranged so as to be positioned in the groove portion  23 , with the nozzle portion  13  completely inserted in the connecting portion  20  of the supply tube  4 , and are formed so as to fit in the groove portion  23 . 
     Each protruding portion  14  includes, on the distal end side thereof in the insertion direction, a slant portion  14   a , which is inclined toward the proximal end side. On the other hand, an edge portion  14   b  is formed on the proximal end side of the protruding portion  14 . 
     Note that the number of the protruding portions  14  of the nozzle portion  13  is not limited to two, but may be one or three or more. The protruding portion  14  may be formed in a ring shape that is continuous in the circumferential direction of the nozzle portion  13 . 
     As shown in  FIGS. 3 and 4 , a resin cap  25  for closing the opening  13   a  is put on the nozzle portion  13 . Therefore, the body fluid leakage-preventing agent  2  in the storage section  12  will not leak out from the nozzle portion  13  before use. 
     The piston  11  is for pushing the body fluid leakage-preventing agent  2  inside the storage section  12  out from the opening  13   a  of the nozzle portion  13 . The piston  11  includes a pushing portion  11   a  to be inserted from an end portion of the storage section  12  that is opposite to the nozzle portion  13 , and a pushing rod  11   b  for operating the pushing portion  11   a . The pushing portion  11   a  and the pushing rod  11   b  are formed by a resin material similar to that of the syringe  10 . Therefore, after use, the syringe  10  and the piston  11  can be disposed of together. 
     Next, the method for connecting together the container  3  and the supply tube  4  of the embalming device  1  having such configurations will be described. Note that the cap  25  is put on the nozzle portion  13  of the syringe  10 , which is filled with the body fluid leakage-preventing agent  2 . The pushing portion  11   a  of the piston  11  is inserted in the syringe  10 , thereby closing the syringe  10 . 
     First, the cap  25  is taken off the nozzle portion  13 . Then, the container  3  and the supply tube  4  are connected together. That is, the nozzle portion  13  of the syringe  10  is inserted into the connecting portion  20  of the supply tube  4 . As the nozzle portion  13  is inserted deeper into the connecting portion  20 , the tapered surface  13   b  of the nozzle portion  13  is pushed against the engagement surface  20   a  of the connecting portion  20 . At this point, the tapered surface  13   b  and the engagement surface  20   a  are brought into close contact with each other, with a slight elastic deformation, since the nozzle portion  13  and the connecting portion  20  are formed by a resin material. At a point immediately before the nozzle portion  13  is completely inserted in the connecting portion  20 , the protruding portions  14  of the nozzle portion  13  start fitting into the groove portion  23  of the connecting portion  20 . At this point, since the slant portion  14   a  is formed on the distal end side of each protruding portion  14  in the insertion direction, the protruding portions  14  easily fit into the groove portion  23 . Then, the protruding portions  14  are engaged with the groove portion  23  when the protruding portions  14  are completely fit in the groove portion  23 , i.e., when the nozzle portion  13  is completely inserted in the connecting portion  20 , as shown in  FIG. 5 . This prevents the nozzle portion  13  from inadvertently coming off the connecting portion  20 , and keeps a close contact between the tapered surface  13   b  of the nozzle portion  13  and the engagement surface  20   a  of the connecting portion  20 , thereby ensuring a high liquid impermeability. 
     If a force acts upon the nozzle portion  13  in such a direction that urges the nozzle portion  13  to come off the connecting portion  20 , with the nozzle portion  13  inserted in the connecting portion  20 , the edge portions  14   b  of the protruding portions  14  are pushed into the inner surface of the groove portion  23 . This prevents the nozzle portion  13  from coming off. 
     Since the thickness of the connecting portion  20  of the supply tube  4  is greater than the thickness of the inserted tube portion  15 , as described above, the rigidity of the connecting portion  20  is higher than that of the inserted tube portion  15 . Thus, even if an external force acts upon the connecting portion  20 , it is possible to keep a close contact between the connecting portion  20  and the nozzle portion  13 . 
     Next, the method for injecting the body fluid leakage-preventing agent  2  into the throat B will be described. Note that in  FIG. 7 , C denotes the tongue, D denotes the airway, E denotes the esophagus, F denotes the cervical vertebra, and G denotes the oral cavity. 
     First, the inserted tube portion  15  is inserted into the nasal cavity A from the distal end side of the inserted tube portion  15 . At this point, since the inserted tube portion  15  is thinner and more flexible than the intermediate portion  19  or the connecting portion  20 , the inserted tube portion  15  can easily deform to conform with the inner shape of the nasal cavity A, thus requiring only a small insertion force. 
     As the inserted tube portion  15  is inserted deeper into the nasal cavity A, and the first to third injection holes  16  to  18  of the inserted tube portion  15  reach the throat B, the stopper  22  abuts on the nose tip A 1 . That is, the stopper  22  serves as a marking indicating that the distal end side of the inserted tube portion  15  has reached the throat B. Once the stopper  22  abuts on the nose tip A 1 , the inserted tube portion  15  cannot be inserted any further. 
     On the other hand, if the operator stops inserting the inserted tube portion  15 , with the stopper  22  being substantially away from the nose tip A 1 , the distal end side of the inserted tube portion  15  has not reached the throat  13 . If it has not reached the throat B, the inserted tube portion  15  is pushed further into the nasal cavity A. 
     If there is a strong insertion resistance when pushing the inserted tube portion  15  into the nasal cavity A, the inserted tube portion  15  is once pulled back and then re-inserted, or is re-inserted through the other nasal cavity A. In this way, the inserted tube portion  15  can be inserted toward the throat B. Therefore, even a person with little embalming experience can easily insert the inserted tube portion  15  into the throat B. 
     Then, as the pushing rod  11   b  of the piston  11  is pushed into the syringe  10 , the pushing portion  11   a  slides against the inner surface of the syringe  10  toward the nozzle portion  13 . Thus, the body fluid leakage-preventing agent  2  in the syringe  10  is passed through the nozzle portion  13 , the opening  13   a  and the intermediate portion  19  of the supply tube  4  into the inserted tube portion  15 . The body fluid leakage-preventing agent  2 , which has been passed into the inserted tube portion  15 , passes through the inner passage R and is injected into the throat B through the first to third injection holes  16  to  18 . During this injection of the body fluid leakage-preventing agent  2 , the pressure from the pushing portion  11   a  acts on the area from the inside of the nozzle portion  13  to the inside of the supply tube  4 . Nevertheless, since the tapered surface  13   b  and the engagement surface  20   a  are in close contact with each other and since the protruding portions  14  are fit in the groove portion  23 , as described above, the nozzle portion  13  is prevented from inadvertently coming off the connecting portion  20 , and the body fluid leakage-preventing agent  2  is prevented from leaking out from between the nozzle portion  13  and the connecting portion  20 . 
     When the body fluid leakage-preventing agent  2  is injected into the throat B, part or whole of the second injection holes  17  of the inserted tube portion  15 , for example, may possibly be blocked by the inner wall of the nasal cavity A or the inner wall of the throat B. In such a case, the body fluid leakage-preventing agent  2  is discharged from the third injection holes  18  so as to be guided to the throat B through between the outer periphery surface of the inserted tube portion  15  and the inner wall of the nasal cavity A, and is injected into the throat B from the first injection hole  16 . 
     Other than the method in which the inserted tube portion  15  of the supply tube  4  is inserted into the nasal cavity A after the container  3  and the supply tube  4  are connected together as described above, the method for injecting the body fluid leakage-preventing agent  2  into the throat B may be a method in which the container  3  and the supply tube  4  are connected together after the inserted tube portion  15  of the supply tube  4  is inserted into the nasal cavity A. 
     In the latter method, first, the inserted tube portion  15  is inserted from the nasal cavity A toward the throat B. Then, the nozzle portion  13  of the syringe  10  is inserted into the connecting portion  20  of the supply tube  4  so that the protruding portions  14  are engaged with the groove portion  23 . Thus, the container  3  and the supply tube  4  are connected together. Then, by operating the piston  11 , the body fluid leakage-preventing agent  2  is injected into the throat B via the supply tube  4 . 
     Therefore, in the connection structure Y between the container  3  and the supply tube  4  according to Embodiment 1, the protruding portions  14  are formed on the outer periphery surface of the nozzle portion  13  of the container  3  and the groove portion  23  is formed on the inner periphery surface of the connecting portion  20  of the supply tube  4 , so that the protruding portions  14  are fit in the groove portion  23  with the nozzle portion  13  inserted in the connecting portion  20 , thus ensuring the connection between the container  3  and the supply tube  4 . This prevents the body fluid leakage-preventing agent  2  from leaking out from the connection portion during the operation of injecting the body fluid leakage-preventing agent  2  into a corpse, and prevents the supply tube  4  from coming off the container  3 . 
     Molding together the inserted tube portion  15  and the connecting portion  20  of the supply tube  4  eliminates the need for an adhesive, which is used when they are molded separately. Thus, no adhesive will run over from between the inserted tube portion  15  and the connecting portion  20  into the inner passage R of the inserted tube portion  15 , thereby preventing the inner passage R from being closed by an adhesive. 
     Since the protruding portions  14  fit in the groove portion  23 , with the engagement surface  20   a  of the connecting portion  20  of the supply tube  4  fit over the tapered surface  13   b  of the nozzle portion  13 , the protruding portions  14  are unlikely to be detached from the groove portion  23 . Thus, it is possible to even more reliably connect together the container  3  and the supply tube  4 . 
     Since the body fluid leakage-preventing agent  2  is pushed out from the syringe  10  by the piston  11 , which slides inside the syringe  10 , the body fluid leakage-preventing agent  2  can be reliably held in the syringe  10  before use, and the body fluid leakage-preventing agent  2  can be injected into the throat B by a simple operation of pushing the piston  11  into the syringe  10  during the injection operation. 
     Note that when disposing of the embalming device  1  after the body fluid leakage-preventing agent  2  is injected into the throat B, the container  3  and the supply tube  4  may be connected together or may be separated from each other. In order to separate the container  3  and the supply tube  4  from each other, the nozzle portion  13  of the syringe  10  may be pulled hard off the connecting portion  20  of the supply tube  4 . 
     Although not shown, a protruding portion as an engagement portion may be provided on the inner periphery surface of the connecting portion  20  of the supply tube  4  while a groove portion as an engagement portion may be provided on the outer periphery surface of the nozzle portion  13 , whereby they can be engaged with each other. 
     Through holes (engagement portions)  30 , into which the protruding portions  14  of the nozzle portion  13  are fit, may be provided in the peripheral wall portion of the connecting portion  20  of the supply tube  4 , as in a variation of Embodiment 1 shown in  FIG. 8 . In this variation, the through hole  30  and the protruding portions  14  can be engaged with each other by fitting the protruding portions  14  of the nozzle portion  13  into the through holes  30 . Although not shown, a through hole (an engagement portion) may be provided in the peripheral wall portion of the nozzle portion  13 , and a protruding portion (an engagement portion) to be fit into the through hole may be provided on the inner periphery surface of the connecting portion  20 . 
     Second Embodiment 
       FIGS. 9 and 10  show a supply tube  31  used in a connection structure between a container and a supply tube according to Embodiment 2 of the present invention. 
     A predetermined area on the distal end side in the insertion direction of an inserted tube portion  32  of the supply tube  31  of Embodiment 2 is curved so that the distal end portion thereof is located toward one side in the radial direction with respect to the proximal end portion thereof. The first injection hole  16  is not opened in the distal end surface of the inserted tube portion  32 , but the inserted tube portion  32  is closed by a curved surface portion  32   a , which is curved so as to bulge in the insertion direction of the inserted tube portion  32 . As with the second and third injection holes  17 ,  17 ,  18  and  18  of Embodiment 1 described above, a total of four injection holes  36 ,  36 ,  37  and  37  are formed in the peripheral wall portion of the distal end side of the inserted tube portion  32 . 
     The outer diameter of the proximal end side of the inserted tube portion  32  is gradually increasing toward the proximal end. The thickness of the proximal end side of the inserted tube portion  32  is greater than that of the distal end side. An intermediate portion  33  that connects to the proximal end portion of the inserted tube portion  32  and a connecting portion  34  that connects to the intermediate portion  33  have generally the same thickness. Therefore, the outer periphery surface of the intermediate portion  33  and the outer periphery surface of the connecting portion  34  smoothly connect to each other, and the inner periphery surface of the intermediate portion  33  and the inner periphery surface of the connecting portion  34  also smoothly connect to each other. 
     The outer periphery surface of the connecting portion  34  is formed by an engagement surface  34   a , as in Embodiment 1. Two through holes (engagement portions)  35  and  35 , apart from each other in the circumferential direction, are formed in the peripheral wall portion of the connecting portion  34 . Each through hole  35  has a shape that extends in the circumferential direction of the connecting portion  34 . The through holes  35  are formed by punching dies provided at positions corresponding to the through holes  35  when molding the supply tube  31  by using an injection mold (not shown). Thus, it is possible to form the through holes  35  at a lower cost than when the through holes  35  are formed through a post-molding process. 
     As is the stopper  22  of Embodiment 1, a stopper  38  for preventing the over-insertion of the inserted tube portion  32  is formed on the outer periphery surface of the supply tube  31 . A portion of the stopper  38  in the circumferential direction is cut off in a straight line, and the cut-off portion forms a straight portion  38   a . The position of the straight portion  38   a  in the circumferential direction corresponds to the direction in which the distal end side of the inserted tube portion  32  is curved. Thus, as the position of the straight portion  38   a  in the circumferential direction corresponds to the direction in which the inserted tube portion  32  is curved, the operator can check, from outside the nasal cavity A, the direction in which the inserted tube portion  32  is curved with the inserted tube portion  32  inserted in the throat B. 
     Note that since the container used in the connection structure of Embodiment 2 is the same as the container  3  of Embodiment 1, like reference numerals to those of Embodiment 1 will be used in the following description. 
     In Embodiment 2, since the through holes  35  and  35  are formed in the connecting portion  34  of the supply tube  31 , the operator, when connecting the container  3  and the supply tube  31  together, can visually check, from outside the connecting portion  34 , whether the protruding portions  14  of the nozzle portion  13  of the container  3  are fit in and engaged with the through holes  35 . 
     Also in Embodiment 2, as in Embodiment 1, by engaging the protruding portions  14  of the nozzle portion  13  with the through holes  35  of the connecting portion  34 , it is possible to ensure the connection between the container  3  and the supply tube  31 , thereby preventing the body fluid leakage-preventing agent  2  from leaking out from the connection portion and preventing the supply tube  31  from coming off the container  3 . 
     When inserting the supply tube  31  of Embodiment 2 toward the throat B, the inserted tube portion  32  can be inserted smoothly into the throat B since the inserted tube portion  32  is curved so as to conform with the shape of the area from the nasal cavity A to the throat B. Note that if the inserted tube portion  32  is curved to an excessive degree, the operation of inserting it into the nasal cavity A will become difficult. Therefore, for example, the inserted tube portion  32  is preferably curved so that the center of the distal end portion of the inserted tube portion  32  is radially displaced from the center of the proximal end portion thereof by an amount in the range from one half to three times the diameter of the distal end of the inserted tube portion  32 . 
     Moreover, since the straight portion  38   a  is formed by cutting off a portion of the stopper  38  so that the position of the straight portion  38   a  corresponds to the direction in which the inserted tube portion  32  is curved, the stopper  38 , when coming close to the nose tip A 1 , is less likely to bump against the skin between the nose tip A 1  and the upper lip (the area under the nose), thus improving the insertion operability. 
     As in Variation  1  shown in  FIG. 11 , a first groove portion  40  and a second groove portion  41 , as engagement portions, may be formed on the peripheral wall portion of the connecting portion  34  of the supply tube  31 , and a pin portion (an engagement portion)  42  to be inserted into the first groove portion  40  and the second groove portion  41  may be formed on the peripheral wall portion of the nozzle portion  13  of the container  3 . The first groove portion  40  extends in the circumferential direction in an axially intermediate portion of the connecting portion  34 . The second groove portion  41  continuously extends with one end portion of the first groove portion  40 , and extends in the axial direction along the peripheral wall portion of the connecting portion  34 , reaching the proximal end portion of the connecting portion  34 . 
     In Variation  1 , in order to connect the container  3  and the supply tube  31  together, the nozzle portion  13  is first inserted into the connecting portion  34 , and the pin portion  42  is inserted into the second groove portion  41 . When the pin portion  42  reaches the distal end side of the second groove portion  41 , the connecting portion  34  is rotated with respect to the nozzle portion  13  so as to position the pin portion  42  in the first groove portion  40 , and then the pin portion  42  is positioned in an end portion of the first groove portion  40  that is opposite to the second groove portion  41 , as shown in a phantom line. Thus, the pin portion  42  and the first groove portion  40  are engaged with each other, thereby preventing the nozzle portion  13  from coming off. By rotating the connecting portion  34  with respect to the nozzle portion  13 , the tapered surface portion  13   b  of the nozzle portion  13  and the engagement surface  34   a  of the connecting portion  34  can be brought strongly into close contact with each other. Note that when connecting the container  3  and the supply tube  31  together, the nozzle portion  13  can be rotated with respect to the connecting portion  34 . 
     The first groove portion  40  of Variation  1  may be formed so that a portion thereof further away from the second groove portion  41  is positioned closer to the proximal end side of the connecting portion  34 , as in Variation  2  shown in  FIG. 12 . Then, the relative rotation between the connecting portion  34  and the nozzle portion  13  is suppressed when the pin portion  42  is in the first groove portion  40 , thereby making it less likely that the pin portion  42  comes off the first and second groove portions  40  and  41 . The first groove portion  40  may be formed so that a portion thereof further away from the second groove portion  41  is positioned closer to the distal end side of the connecting portion  34 . 
     Note that although not shown, a first groove portion and a second groove portion may be formed in the nozzle portion  13 , and a pin portion may be formed on the inner periphery surface of the connecting portion  34 . In Variations  1  and  2 , instead of the first groove portion  40  and the second groove portion  41 , there may be formed a first depressed portion and a second depressed portion extending similarly to the first groove portion  40  and the second groove portion  41 . 
     An engagement portion  25   a , which is a depressed portion, may be provided on the cap  25 , so that the engagement portion  25   a  is fit over the protruding portions  14  of the nozzle portion  13 , as in Variation  3  shown in  FIG. 13 . The cap  25  has a cylindrical shape with the bottom, and the engagement portion  25   a  is formed so as to extend in the circumferential direction on the inner periphery surface of the cap  25 . The engagement portion  25   a  is not limited to a depressed portion, but may be a through hole, for example. 
     A flange portion  25   b  is provided in the end portion of the cap  25  on the open side thereof. When the cap  25  is taken off the nozzle portion  13 , it is easily taken off by putting fingers on the flange portion  25   b . The shape of the flange portion  25   b  may be a shape continuously extending in the circumferential direction while protruding from the outer periphery surface of the cap  25 , or may be a shape protruding only in a portion in the circumferential direction. Although not shown, a ring-shaped portion on which fingers can be placed may be provided on the cap  25 . 
     The cap  25  may be made of a rubber, as in Variation  4  shown in  FIG. 14 . The cap  25  is formed so that the diameter on the open side thereof is smaller than the outer diameter of the nozzle portion  13 . Therefore, when the cap  25  is on the nozzle portion  13 , the cap  25  hangs on the protruding portions  14  of the nozzle portion  13  and is less likely to come off. 
     The engagement portion of the connecting portion  34  of the supply tube  31  may be formed by an internal thread portion  50 , as in Variation  5  shown in  FIG. 15 . The internal thread portion  50  is formed in a spiral pattern on the engagement surface  34   a  of the connecting portion  34 . In Variation  5 , the engagement portion of the nozzle portion  13  is formed by an external thread portion (an engagement portion) that screws with the internal thread portion  50 , although not shown. The external thread portion and the internal thread portion  50  are engaged together by being screwed together. 
     The outer diameter of the intermediate portion  33  of the supply tube  31  may be made larger than the outer diameter of the inserted tube portion  32  to thereby form a step portion  51  on the outer periphery surface of the supply tube  31 , as in Variation  6  shown in  FIG. 16 . The step portion  51  forms a stopper that abuts on the nose tip A 1  when the first to third injection holes  16  to  18  of the inserted tube portion  32  reach the throat B or the vicinity of the throat B. 
     In Variation  6 , four slits  55 ,  55 , . . . , extending in the axial direction while being spaced apart from one another in the circumferential direction, are formed on the connecting portion  34  of the supply tube  31 . A groove portion  52  as an engagement portion is formed on the engagement surface  34   a  of the connecting portion  34 . With the slits  55 ,  55 , . . . , formed in the connecting portion  34 , the connecting portion  34  deforms when the nozzle portion  13  is inserted into the connecting portion  34 , so that the protruding portions  14  of the nozzle portion  13  are more easily fit into the groove portion  52  of the connecting portion  34 . 
     The engagement portion of the connecting portion  34  of the supply tube  31  may be formed by claw portions  56 , and the engagement portion of the nozzle portion  13  may be a depressed portion  57  into which the claw portions  56  are fit, as in Variation  7  shown in  FIGS. 17 to 19 . The step portion  51  serving as a stopper is formed on the supply tube  31  of Variation  7 , as in Variation  6 . The slits  55 ,  55 , . . . , are formed in the connecting portion  34 , as in Variation  6 . Four of the claw portions  56  are provided spaced apart from one another in the circumferential direction of the connecting portion  34 , and protruding from the proximal end portion of the connecting portion  34  toward the inside of the connecting portion  34 . On the other hand, the depressed portion  57  continuously extends in the circumferential direction of the nozzle portion  13 . 
     A tapered portion  60  whose diameter decreases toward the distal end may be provided on the distal end side of the inserted tube portion  32  of the supply tube  31 , as in Variation  8  shown in  FIG. 20 . The first injection hole  16 , which is a small aperture, is opened in the distal end surface of the tapered portion  60 . The third injection holes  18  are in a circular shape. In Variation  8 , if the second and third injection holes  17  and  18  are closed by the inner wall of the nasal cavity A, or the like, the body fluid leakage-preventing agent  2  can be injected into the throat B from the first injection hole  16 . With the first injection hole  16  opened in the tapered portion  60 , the rigidity of the tapered portion  60  is decreased, and the tapered portion  60  can be easily bent. Thus, when inserting the inserted tube portion  32  toward the throat B, the tapered portion  60  can deform and can be smoothly inserted deep into the nasal cavity A. 
     The distal end surface of the inserted tube portion  32  of the supply tube  31  may be closed by a curved surface portion  63 , without forming the first injection hole therein, as in Variation  9  shown in  FIG. 21 . A protruding portion  64  is formed in the curved surface portion  63 , and the protruding portion  64  is radially shifted from the axial line of the inserted tube portion  32 . The second injection holes  17  and  17  are formed both on the upper and lower sides of the inserted tube portion  32  shown in  FIG. 21 . With the second injection holes  17  and  17 , the distal end side of the inserted tube portion  32  is more easily bent, and the curved surface portion  63  can be easily displaced in the vertical direction of  FIG. 21  (the radial direction of the inserted tube portion  32 ). If the protruding portion  64  abuts on the inner wall of the nasal cavity A when inserting the inserted tube portion  32 , the distal end side of the inserted tube portion  32  is easily bent toward the throat B, thus enabling smooth insertion of the inserted tube portion  32 . 
     A lid member  66  may be fit into the distal end portion of the inserted tube portion  32  of the supply tube  31 , as in Variation  10  shown in  FIG. 22 . The outer surface of the lid member  66  is formed by a curved surface  66   a , which is curved toward the insertion direction of the inserted tube portion  32 . The shape of the curved surface  66   a  of the lid member  66  may be the same as that of the distal end surface of the inserted tube portion  32  of Variation  9 . 
     The first to third injection holes  16  to  18  may each be formed by making a cross-shaped cut in the inserted tube portion  32 . Then, when injecting the body fluid leakage-preventing agent  2 , the cut is opened wide by the discharging pressure, thereby allowing the body fluid leakage-preventing agent  2  to be discharged therethrough. Since the cut is closed after the injection, the body fluid leakage-preventing agent  2  in the inserted tube portion  32  is less likely to leak out when the inserted tube portion  32  is pulled out of the nasal cavity A. The shape of the cut may be straight or curved. 
     The shape of the first to third injection holes  16  to  18  is not limited to a circular shape or an elliptical shape, but may be, for example, a straight slit shape, a bow-shaped curved slit shape, a polygonal shape, or the like. 
     Three each of the second and third injection holes  17  and  18  may be opened at a 120° interval in the circumferential direction of the inserted tube portion  32 , or four each of them may be opened at a 90° interval. 
     One of the first to third injection holes  16  to  18  may be formed by a cut. 
     Separately from the second injection holes  17 , there may be formed injection holes in the inserted tube portion  32 , although not shown, that are axially away from the third injection holes  18 . 
     Although not shown, a one-way valve formed by a thin film material may be provided on the outer side of the first to third injection holes  16  to  18 , for example, thereby suppressing the dripping of the body fluid leakage-preventing agent  2 , left in the inserted tube portion  32 , through the injection holes  16  to  18  after use. A portion of the thin film material may be attached to the outer periphery surface of the inserted tube portion  32  so that when the body fluid leakage-preventing agent  2  in the inserted tube portion  32  is injected, the thin film material comes off the outer periphery surface, except for the attached portion, due to the discharging pressure. Thus, during the injection, the first to third injection holes  16  to  18  are opened by the discharging pressure of the body fluid leakage-preventing agent  2 , and the body fluid leakage-preventing agent  2  is injected into the throat B. Then, after the injection, the piston  11  is slightly pulled back so as to give a negative pressure inside the storage section  12 , thereby sucking the body fluid leakage-preventing agent  2  in the inserted tube portion  32  into the syringe  10 . This brings the thin film material into close contact with the outer periphery surface of the inserted tube portion  32 , thereby closing the first to third injection holes  16  to  18 . Any one or two of the first to third injection holes  16  to  18  may be closed by the thin film materials. 
     Variations  1  to  10  of Embodiment 2 are also applicable to Embodiment 1. 
     The protruding portions  14  of the nozzle portion  13  of the container  3 , or the distal end side thereof with respect to the protruding portions  14 , may be colored so that it can be clearly distinguished from other portions, and the connecting portion  34  of the supply tube  31  may be formed by a light-transmitting material. Thus, the protruding portions  14  of the nozzle portion  13  can be seen through from the outside of the connecting portion  34 , thereby enabling one to visually check whether the protruding portions  14  are engaged with the through holes  35 . 
     Third Embodiment 
     Referring to  FIGS. 23 and 24 , a connection structure between a container and a supply tube according to Embodiment 3 of the present invention will now be described. 
     With the structures of Embodiments 1 and 2, the supply tube  4  is inserted through the nasal cavity A into the throat B. Embodiment 3 differs from Embodiments 1 and 2 in that a supply tube  131  is inserted through the oral cavity G into the throat B, as shown in  FIG. 23 . Note that the supply tube  4  of Embodiment 3 may be inserted through the nasal cavity A into the throat B. In such a case, the supply tube  131  serves as a multi-purpose supply tube that can be used both when it is inserted through the nasal cavity A and when it is inserted through the oral cavity G. 
     The supply tube  131  of Embodiment 3 differs, structure-wise, from the supply tube  31  of Embodiment 2 in that a marking  136  is provided on an inserted tube portion  132 , with the length and the thickness thereof being equal to those of Embodiment 2. The marking  136  is located away from the stopper  38  toward the distal end side of the inserted tube portion  132 . The marking  136  is formed on the outer periphery surface of the inserted tube portion  132  in a band shape with a predetermined width extending in the circumferential direction, and is colored with a different color from the color of the inserted tube portion  132 . The marking  136  may be of a single color or multiple colors, or may be a pattern, letters, or the like. 
     The marking  136  is used when it is inserted from the oral cavity G to the throat B. That is, the distance from the mouth to the throat B through the oral cavity G is typically shorter than the distance from the nose tip A 1  to the throat B through the nasal cavity A. Therefore, when the inserted tube portion  132  is inserted from the mouth to the throat B, if it is inserted until the stopper  38  whose position is determined for the insertion through the nasal cavity A abuts on the lips or the front teeth, for example, the injection ports  36  and  37  will be inserted deeper than the appropriate position in the throat B, and the body fluid leakage-preventing agent  2  may not be injected into the intended area of the throat B. 
     That is, in the operation of inserting the inserted tube portion  132 , the over-insertion of the inserted tube portion  132  can be prevented by stopping the insertion when the marking  136  comes close to the lips or the front teeth before the stopper  38  abuts on the lips or the front teeth, as shown in  FIG. 23 . Then, it is possible to reliably inject the body fluid leakage-preventing agent  2  to the intended position of the throat B. 
     When the supply tube  131  is inserted from the nasal cavity A to the throat B, it can be inserted until the stopper  38  abuts on the nose tip A 1  of the nasal cavity A. Then, it is possible to reliably inject the body fluid leakage-preventing agent  2  to the intended position of the throat B. The stopper  38  can be used also as a marking indicating the amount of insertion of the inserted tube portion  132  into the throat B. 
     Embodiment 3 can provide similar effects to those of Embodiment 1. 
     Note that the marking  136  is not limited to the marking as described above, but may be, for example, a step formed on the outer periphery surface of the inserted tube portion  132 , a portion of the outer periphery surface of the inserted tube portion  132  where the surface is roughened, or a portion of the outer periphery that is cut and raised so that it serves as a stopper. Although not shown, a separate stopper formed by a separate member from the inserted tube portion  132  may be provided on the inserted tube portion  132  so that the separate stopper can be moved along on the outer periphery surface of the inserted tube portion  132 . Then, it is possible to easily accommodate the case where the inserted tube portion  132  is inserted into the throat B from the nasal cavity A and the case where the inserted tube portion  132  is inserted into the throat B from the oral cavity G by changing the position of the separate stopper. Thus, the separate stopper can be used in both cases. Note that the separate stopper can be used also as a marking indicating the amount of insertion of the inserted tube portion  132  into the throat B. 
     Although not shown, a ring-shaped stopper formed by a separate member may be provided on the inserted tube portion  132  closer to the distal end side thereof than the stopper  38 . Then, by moving the ring-shaped stopper to a corresponding position depending on whether the inserted tube portion  132  is inserted into the throat B from the nasal cavity A or the inserted tube portion  132  is inserted into the throat B from the oral cavity G, the ring-shaped stopper can be used in both cases. 
       FIG. 25  shows Variation  1  of Embodiment 3. In Variation  1  of Embodiment 3, a cover tube  235  opened at both ends is put over the inserted tube portion  132 . The cover tube  235  serves as one or both of the stopper and the marking described above, and can be attached to, or detached from, the supply tube  131 . A flange portion  236  is formed in one axial end portion of the cover tube  235 . The inner diameter of the cover tube  235  is set to be smaller than the outer diameter of the proximal end side of the inserted tube portion  132 . 
     When using the structure of Variation  1 , the cover tube  235  is set over the inserted tube portion  132  of the supply tube  131  before the inserted tube portion  132  is inserted into the oral cavity G. At this point, the cover tube  235  is oriented so that the opposite side of the cover tube  235  to the flange portion  236  abuts on the stopper  38 . Then, as the cover tube  235  is moved until the opposite side of the cover tube  235  to the flange portion  236  abuts on the stopper  38 , the inner periphery surface of the cover tube  235  is pressed against the outer periphery surface of the inserted tube portion  132  since the inner diameter of the cover tube  235  is set to be smaller than the outer diameter of the proximal end side of the inserted tube portion  132 . Thus, the cover tube  235  does not easily come off the inserted tube portion  132 . Note that the coming off of the cover tube  235  may be suppressed by providing a projecting portion on the inner periphery surface of the cover tube  235  so that the projecting portion abuts on the outer periphery surface of the inserted tube portion  132 . 
     Thus, after the cover tube  235  is set over the inserted tube portion  132 , the inserted tube portion  132  is inserted into the oral cavity G until the flange portion  236  of the cover tube  235  abuts on the lips or the front teeth. Then, it is possible to position the injection ports  36  and  37  at an appropriate place in the throat B. The cover tube  235  may be set at a position that is short of abutting on the stopper  38 . 
       FIG. 26  shows Variation  2  of Embodiment 3. In Variation  2  of Embodiment 3, a cover tube  335  having the bottom is put over the inserted tube portion  32 . The distal end portion of the cover tube  335  is formed by a curved surface. Openings that coincide with the injection ports  36  and  37  of the inserted tube portion  132  are formed on the distal end side of the cover tube  335 . A flared portion  336  is formed on the proximal end side of the cover tube  335 . The flared portion  336  serves as one or both of the stopper and the marking described above. The inner diameter of the cover tube  335  is set to be smaller than the outer diameter of the proximal end side of the inserted tube portion  132 . Moreover, the cover tube  335  is curved as a whole, and the degree of the curve is set to be greater than the degree of the curve of the inserted tube portion  132  (shown in a phantom line in the figure). 
     When using the structure of Variation  2 , the cover tube  335  is set over the inserted tube portion  132  of the supply tube  131  before the inserted tube portion  132  is inserted into the oral cavity G. At this point, the openings on the distal end side of the cover tube  335  are aligned with the injection ports  36  and  37  of the inserted tube portion  132 . Then, the distal end portion of the inserted tube portion  132  is brought into contact with the inner surface of the distal end portion of the cover tube  335 , thus positioning the cover tube  335 . 
     After the cover tube  335  is set over the inserted tube portion  132  as described above, the inserted tube portion  132 , together with the cover tube  335 , is inserted into the oral cavity G until the flared portion  336  of the cover tube  235  abuts on the lips or the front teeth. Thus, the injection ports  36  and  37  of the inserted tube portion  132  can be positioned at an appropriate position in the throat B. 
     In Variation  2 , since the cover tube  335  is put over the inserted tube portion  132 , the outer diameter of the portion to be inserted into the throat B is increased. Nevertheless, this will present no problems during the insertion into the throat B since the oral cavity G can be opened wider than the nasal cavity A. By putting the cover tube  335  over the inserted tube portion  132 , the inserted tube portion  132  is reinforced and less easily bent. Thus, when inserting the inserted tube portion  132  into the oral cavity G, the inserted tube portion  132  will not bend unnecessarily, enabling smooth insertion. With the increased diameter, the operator can know, from the external appearance, that the tube is one that is inserted into the throat B through the oral cavity G. 
     Note that instead of the cover tubes  235  and  335  described above, a stopper and/or a marking may be provided by a member formed so that it can be fit over the inserted tube portion  132 , for example. An example of such a member is a bellows-shaped tube member, but it is not limited thereto. A tape may be wound around the inserted tube portion  132 , which may be used as a stopper and/or a marking. An elastic resin ring member having a C-shaped cross section may be fit around the inserted tube portion  132 , which may be used as a stopper and/or a marking. When the elastic ring member is attached to the inserted tube portion  132 , the elastic ring member can be radially expanded, and the operation of attaching it to the inserted tube portion  132  is easy. 
     Fourth Embodiment 
       FIG. 27  shows a supply tube  431  according to Embodiment 4 of the present invention. The supply tube  431  is used only for the insertion into the throat B through the oral cavity G, and the length thereof is set to be shorter than those of Embodiments 1 to 3. The outer diameter D 2  of the supply tube  431  of Embodiment 4 is set to be greater than the outer diameter D 1  of Embodiment 2 (shown in  FIG. 9 ). 
     An injection port  436  is formed in the distal end surface of the supply tube  431 . Two injection ports  437  (only one is shown in  FIG. 27 ), spaced apart from each other in the circumferential direction, are provided in the peripheral wall portion of the distal end side of the supply tube  431 . A stopper  438  having a similar function to that of Embodiment 1 is provided on the supply tube  431 . The stopper  438  is in a disc shape. The supply tube  431  is curved so as to conform with the curved shape of the oral cavity G. The supply tube  431  has a high rigidity so that it undergoes little deformation when inserted into the oral cavity G. 
     A case where the tube of Embodiment 4 is used will be described. As the supply tube  431  is inserted from the oral cavity G toward the throat B, the stopper  438  of the supply tube  431  abuts on the lips or the front teeth, thereby optimally positioning the injection ports  436  and  437  in the throat B. When inserting the supply tube  431 , the mouth may be opened wide, if rigor mortis has not set in in the corpse. With the supply tube  431  inserted in the throat B, the supply tube  431  will not deform to decrease the inner diameter thereof, and the body fluid leakage-preventing agent  2  can be injected smoothly into the throat B, since the supply tube  431  has a high rigidity and is curved so as to conform with the shape of the oral cavity G, as described above. 
     Note that the supply tube  431  may be elastically deformable. In such a case, the supply tube  431  deforms in conformity with the curved shape of the oral cavity G of the corpse. 
     A groove portion (an engagement portion)  435 , similar to the groove portion (an engagement portion)  23  of Embodiment 1, is provided in the connecting portion  34 . A through hole similar to that of Embodiment 2 may be formed, instead of the groove portion  435 . 
     Embodiment 4 can provide similar effects to those of Embodiment 1. 
     The supply tubes  4  and  31  for the nasal cavity of Embodiments 1 and 2, which are designed for the insertion into the throat B through the nasal cavity. A, and the supply tubes  131  and  431  for the oral cavity of Embodiments 3 and 4, which are designed for the insertion into the throat B through the oral cavity G may be provided as a set. 
     In Embodiments 1 to 4, a common preservative, antiseptic, antimicrobial, sterilant, aromatic, disinfectant, or the like, or a mixture thereof, may be added to the body fluid leakage-preventing agent  2 . For example, stabilized chlorine dioxide, formalin, an alcohol, a phenol, an oil tapped from a tree, or the like, may be added to the body fluid leakage-preventing agent  2 . 
     While the storage section  12  of the container  3  is formed by the syringe  10  in Embodiments 1 to 4, it is not limited thereto, but may be formed by using a flexible tube-like material. In such a case, the body fluid leakage-preventing agent  2  can be squeezed out of the storage section. 
     The supply tube  4  of Embodiment 1 or the supply tube  31  of Embodiment 2 may be inserted toward the throat B from the oral cavity G (shown in  FIG. 7 ). 
     The connecting portions  20  and  34  and the inserted tube portions  15 ,  32  and  132  of the supply tubes  4 ,  31 ,  131  and  431  of Embodiments 1 to 4 may be separately molded each by using a resin, and then welded together into an integral piece. Then, different resins may be used for the connecting portions  20  and  34  and for the inserted tube portions  15 ,  32  and  132 , thus improving the freedom in designing the supply tubes  4  and  31 . 
     The material of the supply tubes  4 ,  31 ,  131  and  431  is not limited to a flexible resin material as described above, but may be a hard resin material, a metal material, a fiber material, or the like, for example. 
     The cross section of the inserted tube portions  15 ,  32  and  132  of the supply tubes  4 ,  31 ,  131  and  431  may be an elliptical shape, instead of a circular shape. 
     If the supply tube  4  or  31  is used with an infant, a marking or a stopper is preferably provided at a position about 5 cm away from the distal end of the supply tube  4  or  31 . For use with a child, a marking or a stopper is preferably provided at a position about 8 cm away from the distal end of the inserted tube portion  15 . If the supply tube  4  or  31  is used both for the insertion into the throat B through the nasal cavity A and for the insertion into the throat B through the oral cavity G, the marking or the stopper described above may be provided at two different positions. A marking for use with a child may be formed with a large width in the axial direction of the supply tube  4  or  31 , wherein the distal end side of the marking (the distal end side of the supply tube  4  or  31 ) is used as a marking for the insertion through the oral cavity G, and the rear end side thereof (the proximal end side of the supply tube  4  or  31 ) is used as a marking for the insertion through the nasal cavity A. A supply tube for use with an infant, a supply tube for use with a child, and a supply tube for use with an adult may be provided as a set so that one of the supply tubes can be selected as necessary. The supply tube for use with an infant, the supply tube for use with a child, and the supply tube for use with an adult may be provided with different identification marks, or the supply tubes may be colored differently. The size of the container  3  may be varied between the infant, child and adult applications. The ingredient and the amount of injection of the body fluid leakage-preventing agent  2  may be varied between the infant, child and adult applications. 
     INDUSTRIAL APPLICABILITY 
     As described above, a connection structure between a container and a supply tube, a container, and a supply tube of the present invention are applicable to applications where a body fluid leakage-preventing agent is injected into the throat of a corpse, for example.