Abstract:
An obtained tissue extractor is used in combination with a biopsy forceps. The biopsy forceps includes an elongate insertion portion to be inserted into a body, and a biopsy cup provided at a tip of the insertion portion, including a pair of cup bodies which obtains a living body tissue, and having holes communicating with the inside of the cup bodies. The obtained tissue extractor includes protrusions, and the protrusions enter the inside of the cup bodies from the holes of the cup bodies when the cup bodies are driven to open in a state set at the distal end of the insertion portion, in order to release the obtained tissue from the cup bodies.

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS  
       [0001]     This is a Continuation Application of PCT Application No. PCT/JP2004/014382, filed Sep. 30, 2004, which was published under PCT Article 21(2) in Japanese.  
         [0002]     This application is based upon and claims the benefit of priority from prior Japanese Patent Application No. 2004-026567, filed Feb. 3, 2004, the entire contents of which are incorporated herein by reference. 
     
    
     BACKGROUND OF THE INVENTION  
       [0003]     1. Field of the Invention  
         [0004]     This invention relates to an obtained tissue extractor and a biopsy forceps to obtain a tissue specimen from a body.  
         [0005]     2. Description of the Related Art  
         [0006]     Conventional endoscopic forcipes include, for example, a biopsy forceps disclosed in Jpn. Pat. Appln. KOKAI Publication No. 11-76244. The biopsy forceps is used in a state inserted through a forceps channel of an endoscope, and has, at its tip, a pair of biopsy cups which are driven to open/close by a link mechanism operated by remote manipulation at hand. The biopsy forceps captures and obtains a tissue in the biopsy cups. After the tissue has been obtained, the tissue contained in the biopsy cups is extracted and used as a specimen, and the specimen is pathologically diagnosed.  
       BRIEF SUMMARY OF THE INVENTION  
       [0007]     According to an aspect of the present invention, an obtained tissue extractor is used in combination with a biopsy forceps. The biopsy forceps includes an elongate insertion portion to be inserted into a body, and a biopsy cup provided at a tip of the insertion portion, including a pair of cup bodies which obtains a living body tissue, and having holes communicating with the inside of the cup bodies. The obtained tissue extractor includes protrusions, and the protrusions enter the inside of the cup bodies from the holes of the cup bodies when the cup bodies are driven to open in a state set at the distal end of the insertion portion, in order to release the obtained tissue from the cup bodies. 
     
    
     BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING  
       [0008]      FIG. 1  is a schematic side view showing a biopsy forceps according to a first embodiment;  
         [0009]      FIG. 2A  is a schematic partial sectional view showing the configuration of a distal end of the biopsy forceps according to the first embodiment;  
         [0010]      FIG. 2B  is a side view of an obtained tissue extractor in the biopsy forceps according to the first embodiment;  
         [0011]      FIG. 3A  is a schematic perspective view of the obtained tissue extractor slidably provided in a flexible sheath in the biopsy forceps according to the first embodiment;  
         [0012]      FIG. 3B  is a schematic partial sectional view showing a state wherein the obtained tissue extractor of the biopsy forceps according to the first embodiment is used to release a living body tissue from a biopsy cup;  
         [0013]      FIG. 4A  is a schematic side view showing a state wherein the biopsy forceps is pulled out of a forceps channel of an endoscope after the living body tissue has been obtained by use of the biopsy forceps according to the first embodiment;  
         [0014]      FIG. 4B  is a schematic side view showing a state wherein the obtained tissue extractor is moved to a distal end side of an insertion portion after the living body tissue has been obtained by use of the biopsy forceps according to the first embodiment;  
         [0015]      FIG. 4C  is a schematic side view showing a state wherein after the living body tissue has been obtained by use of the biopsy forceps according to the first embodiment, the biopsy cup is opened, and then protrusions of the obtained tissue extractor are caused to enter holes of the biopsy cup to release the tissue;  
         [0016]      FIG. 5A  is a schematic perspective view showing a state wherein slits capable of receiving part of a pantograph mechanism are formed in arms of the obtained tissue extractor in the biopsy forceps according to the first embodiment;  
         [0017]      FIG. 5B  is a schematic partial sectional view showing a state wherein the part of the pantograph mechanism is received in the slits formed in the arms of the obtained tissue extractor in the biopsy forceps according to the first embodiment;  
         [0018]      FIG. 6A  is a schematic side view showing a state wherein the biopsy forceps is pulled out of the forceps channel of the endoscope after the living body tissue has been obtained by use of the biopsy forceps according to the first embodiment;  
         [0019]      FIG. 6B  is a schematic side view showing a state wherein after the living body tissue has been obtained by use of the biopsy forceps according to the first embodiment, the protrusion of the obtained tissue extractor is caused to enter the hole of the biopsy cup to release the tissue in a state where the biopsy cup is opened so that the part of the pantograph mechanism is received in the slits of the obtained tissue extractor;  
         [0020]      FIG. 7  is a schematic side view showing a biopsy forceps according to a second embodiment;  
         [0021]      FIG. 8  is a longitudinal sectional view of obtained tissue extractor in the biopsy forceps according to the second embodiment;  
         [0022]      FIG. 9A  is a schematic view showing a state wherein arms of the obtained tissue extractor are inserted into a tissue collection bottle filled with a fixing solution in a state where the obtained tissue extractor in the biopsy forceps according to the second embodiment is disposed at a distal end of an insertion portion;  
         [0023]      FIG. 9B  is a schematic view showing a state wherein the obtained tissue extractor in the biopsy forceps according to the second embodiment is used as a cover and fixed on the tissue collection bottle, and a living body tissue is released from a biopsy cup;  
         [0024]      FIG. 10  is a schematic side view showing a biopsy forceps according to a third embodiment;  
         [0025]      FIG. 11  is a schematic side view showing a treatment portion of the biopsy forceps according to the third embodiment;  
         [0026]      FIG. 12A  is a schematic side view showing an obtained tissue extractor in the biopsy forceps according to the third embodiment;  
         [0027]      FIG. 12B  is a schematic side view showing a state wherein a U-shaped portion is tilted with respect to a cylindrical portion of the obtained tissue extractor in the biopsy forceps according to the third embodiment;  
         [0028]      FIG. 13  is a schematic perspective view of the obtained tissue extractor in the biopsy forceps according to the third embodiment;  
         [0029]      FIG. 14A  is a schematic partial sectional view showing a state wherein the obtained tissue extractor is disposed at a distal end of an insertion portion after a tissue has been obtained by use of the biopsy forceps according to the third embodiment;  
         [0030]      FIG. 14B  is a schematic partial sectional view showing a state wherein after the tissue has been obtained in a biopsy cup by use of the biopsy forceps according to the third embodiment, the biopsy cup is opened so that a protrusion of one arm enters a hole of one cup body in a state where the obtained tissue extractor is disposed at the distal end of the insertion portion; and  
         [0031]      FIG. 14C  is a schematic partial sectional view showing a state wherein after the tissue has been obtained in the biopsy cup by use of the biopsy forceps according to the third embodiment, the biopsy cup is opened so that the protrusion of one arm enters the hole of one cup body in a state where the obtained tissue extractor is disposed at the distal end of the insertion portion, and then the U-shaped portion is tilted with respect to the cylindrical portion of the obtained tissue extractor by force to open the cup body so that a protrusion of the other arm enters a hole of the other cup body. 
     
    
     DETAILED DESCRIPTION OF THE INVENTION  
       [0032]     A best mode for carrying out this invention will hereinafter be described in reference to the drawings.  
         [0033]     First, a first embodiment will be described using FIGS.  1  to  6 B.  
         [0034]     In  FIG. 1 , there is shown an endoscopic biopsy forceps  10  according to the first embodiment. The biopsy forceps  10  includes a flexible sheath  12 , a treatment portion  14 , an operation portion  16 , and an obtained tissue extractor  18 .  
         [0035]     The flexible sheath  12  is an elongate insertion portion to be inserted into a body. The flexible sheath  12  is cylindrically formed to have moderate flexibility owing to a tightly wound coil.  
         [0036]     The operation portion  16  is provided at a proximal end of the flexible sheath  12 . The operation portion  16  includes an operation portion main body  24  which integrally has a finger hook ring  22  at a rear end thereof, and a slider  26  provided slidably on an outer peripheral surface of the operation portion main body  24  along the axial direction of the sheath  12 . An operation wire  28  is provided inside the operation portion main body  24 , and a rear end of the operation wire  28  is fixed to the slider  26 . The operation wire  28  extends toward the treatment portion  14  through the inside of the flexible sheath  12 .  
         [0037]     The treatment portion  14  is provided at a distal end of the flexible sheath  12 . As shown in  FIG. 2A , the treatment portion  14  includes a cylindrical support  32 , a pantograph mechanism  34 , and a pair of cup bodies  36   a,    36   b  of a biopsy cup (forceps cup). The cup bodies  36   a,    36   b  have the same shape.  
         [0038]     The support  32  is integrally provided at the distal end of the sheath  12 . Inside the support  32 , a coupling member  38  integrally connected to a distal end of the operation wire  28  is provided movably along the axial direction of the sheath  12 .  
         [0039]     The pantograph mechanism  34  includes a pair of links  46   a,    46   b,  and a first pin rod  48  which pivotally supports the links  46   a,    46   b  at a distal end of the coupling member  38 . The links  46   a,    46   b  are fitted to be attached to rear extending arms  42   a,    42   b  of the cup bodies  36   a,    36   b  by support pins  44   a,    44   b,  respectively. The rear extending arms  42   a,    42   b  of the cup bodies  36   a,    36   b  are supported pivotally with respect to each other on a second pin rod  50  provided at a distal end of the support  32 . Thus, the second pin rod  50  is immobile with respect to the support  32 . The first pin rod  48  moves forward and backward inside the support  32  by the forward and backward movement of the coupling member  38  with respect to the support  32 . The support pins  44   a,    44   b  protrude laterally from the support  32  if the first and second pin rods  48 ,  50  are brought into proximity.  
         [0040]     As shown in  FIG. 2A , the cup bodies  36   a,    36   b  include receiving portions  52   a,    52   b  which receive an obtained tissue, respectively. At the bottom of the receiving portions  52   a,    52   b  of the cup bodies  36   a,    36   b,  there are formed holes (openings)  54   a,    54   b,  respectively, to prevent the tissue from being crushed when the tissue is cut off.  
         [0041]     As shown in  FIG. 1 , the obtained tissue extractor  18  freely slides along the axial direction on an outer periphery of the flexible sheath  12 . As shown in  FIGS. 2B and 3A , the obtained tissue extractor  18  includes a cylindrical portion (main body)  64 , and a pair of arms  66   a,    66   b.  The cylindrical portion  64  includes a through-hole  62  through which the flexible sheath  12  is inserted and slidable. As shown in  FIG. 3A , the pair of arms  66   a,    66   b  extends forward from the cylindrical portion  64  with the flexible sheath  12  in between. Distal ends of the arms  66   a,    66   b  are spaced out at a predetermined distance from the central axis of the through-hole  62  in parallel with each other. The predetermined distance at this point is a distance slightly larger than a distance between the support pins  44   a,    44   b  of the pantograph mechanism  34  when the biopsy cup is opened at the maximum. Therefore, as shown in  FIG. 3B , when the cup bodies  36   a,    36   b  are opened so that the obtained tissue extractor  18  is in contact with the support  32 , the support pins  44   a,    44   b  of the pantograph mechanism  34  protruding on the lateral side of the support  32  are prevented from contacting inner walls of the arms  66   a,    66   b.    
         [0042]     Planar portions  68   a,    68   b  tilted with respect to the central axis of the obtained tissue extractor  18  are formed at distal ends of the arms  66   a,    66   b.  The planar portions  68   a,    68   b  are provided with protrusions (convex portions)  72   a,    72   b,  respectively, which protrude vertically to the planar portions  68   a,    68   b  and which are sized so that they are able to be inserted into the holes  54   a,    54   b  of the cup bodies  36   a,    36   b.  The protrusions  72   a,    72   b  are formed in the planar portions  68   a,    68   b  so that they enter the inside of the holes  54   a,    54   b  when the cup bodies  36   a,    36   b  are open. As shown in  FIG. 2B , each of the planar portions  68   a,    68   b  is tilted at an angle of θ 1 /2 with respect to the central axis of the obtained tissue extractor  18 . The angle θ 1  is formed to be substantially equal to or slightly smaller than an open angle θ 2  (see  FIG. 2A ) of the cup bodies  36   a,    36   b.  This ensures that the cup bodies  36   a,    36   b  can be brought into contact with the planar portions  68   a,    68   b  when the cup bodies  36   a,    36   b  open. This therefore ensures that the obtained tissue is able to be removed.  
         [0043]     Next, the operation of the biopsy forceps  10  having such a structure will be described.  
         [0044]     The biopsy forceps  10  shown in  FIG. 1  is inserted into a forceps channel of an unshown endoscope. At this point, the obtained tissue extractor  18  is disposed on a proximal side of the endoscope. The treatment portion  14  of the biopsy forceps  10  is brought into proximity of a living body tissue to be examined while the living body tissue is being observed by the endoscope. The thumb is put in the finger hook ring  22  of the operation portion main body  24  of the biopsy forceps  10 , and the slider  26  is caught between the forefinger and the middle finger. In this state, the slider  26  is moved forward on the operation portion main body  24  with respect to the finger hook ring  22 .  
         [0045]     Then, the operation wire  28  moves forward with respect to the flexible sheath  12 , such that the pantograph mechanism  34  is actuated. Thereby, the cup bodies  36   a,    36   b  of the biopsy cup open with respect to each other. That is, due to the forward movement of the operation wire  28 , the coupling member  38  moves forward with respect to the support  32 , and the first pin rod  48  moves forward. Then, the links  46   a,    46   b  pivot on the first pin rod  48  as a space between the first and second pin rods  48 ,  50  becomes smaller. Further, the rear extending arms  42   a,    42   b  of the cup bodies  36   a,    36   b  pivot on the support pins  44   a,    44   b.  Thus, the cup bodies  36   a,    36   b  open with respect to each other on the second pin rod  50  which is immobile with respect to the support  32 .  
         [0046]     Next, the biopsy forceps  10  is pressed against the tissue while the cup bodies  36   a,    36   b  of the biopsy cup are open, and the slider  26  is moved back on the operation portion main body  24 . Then, the cup bodies  36   a,    36   b  close on the second pin rod  50  due to an action reverse to the above-mentioned action in opening the cup bodies  36   a,    36   b.  A living body tissue  76  obtained at this moment is received in the receiving portions  52   a,    52   b  of the cup bodies  36   a,    36   b.  When the cup bodies  36   a,    36   b  are completely closed, the biopsy forceps  10  is totally pulled, and the obtaining of the living body tissue  76  is completed. Then, the biopsy forceps  10  is pulled out of the channel of the endoscope.  
         [0047]     The tissue  76  obtained by use of the biopsy forceps  10  is extracted as follows.  
         [0048]      FIG. 4A  shows the biopsy forceps  10  pulled out of the forceps channel of the endoscope. From the state shown in  FIG. 4A , the cylindrical portion  64  of the obtained tissue extractor  18  is slid on the flexible sheath  12  to the side of the treatment portion  14 , as shown in  FIG. 4B . A distal end of the cylindrical portion  64  of the obtained tissue extractor  18  is brought into contact with a proximal end of the support  32 .  
         [0049]     In this state, the cup bodies  36   a,    36   b  are opened, as shown in  FIGS. 3B and 4C . The cup bodies  36   a,    36   b  are brought into contact with the planar portions  68   a,    68   b  of the obtained tissue extractor  18 , and at the same time, the protrusions  72   a,    72   b  of the obtained tissue extractor  18  enter the receiving portions  52   a,    52   b  from the holes  54   a,    54   b  of the cup bodies  36   a,    36   b.  Consequently, the obtained tissue  76  in the receiving portions  52   a,    52   b  is pushed out. That is, the obtained tissue  76  in the cup bodies  36   a,    36   b  is easily extracted. The extracted tissue  76  is attached to a piece of filter paper as a specimen, put in a fixing solution such as formalin, and pathologically diagnosed.  
         [0050]     As has been described above, the following can be said according to this embodiment.  
         [0051]     The obtained tissue extractor  18  includes the protrusions  72   a,    72   b  which enter the cup bodies  36   a,    36   b  through the holes  54   a,    54   b  from the outside of the cup bodies  36   a,    36   b  when the cup bodies  36   a,    36   b  are opened in a state positioned at the distal end of the flexible sheath  12  of the biopsy forceps  10 . As a result, the tissue  76  obtained in the receiving portions  52   a,    52   b  of the cup bodies  36   a,    36   b  are able to be pushed out by the protrusions  72   a,    72   b  and thus easily removed.  
         [0052]     In this embodiment, as shown in  FIG. 3B , opposite surfaces of the arms  66   a,    66   b  of the collected tissue extractor  18  are spaced out in order to prevent the pantograph mechanism  34  from being brought into contact. Alternatively, as shown in  FIGS. 5A and 5B , slits  66   c,    66   d  may be formed in the opposite surfaces of the arms  66   a,    66   b  of the obtained tissue extractor  18 , respectively.  
         [0053]     In this case, if the cup bodies  36   a,    36   b  are opened when the obtained tissue extractor  18  is moved from the state shown in  FIG. 6A  to the state shown in  FIG. 6B , the support pins  44   a,    44   b  of the pantograph mechanism  34  protruding on the lateral side of the support  32  are received in the slits  66   c,    66   d  (see  FIG. 5B ).  
         [0054]     Next, a second embodiment will be described with FIGS.  7  to  9 B. This embodiment is a modification of the first embodiment described above, and identical signs are assigned to members identical to, or having functions identical with, the members described in the first embodiment, and such members are not described in detail.  
         [0055]     In a biopsy forceps  10  of this embodiment, a proximal end of the obtained tissue extractor  18  described in the first embodiment is structured differently from an obtained tissue extractor  18   a  in this embodiment. As shown in  FIGS. 7 and 8 , a disk-shaped cover  64   a  is integrally formed at a proximal end of a cylindrical portion  64  of the obtained tissue extractor  18   a  in this embodiment.  
         [0056]     As shown in  FIG. 8 , the cover  64   a  of the obtained tissue extractor  18   a  has, on its distal end side (protrusions  72   a,    72   b  side), a fitting portion  64   b  which fits in a collection bottle  84  described later. An elastic rubber  62   a  is provided in the through-hole  62 . In this rubber  62   a,  a slit  62   b  is formed so that the treatment portion  14  and the flexible sheath  12  are able to be inserted therethrough in a close contact state. The slit  62   b  is closed and sealed after the flexible sheath  12  and the treatment portion  14  are removed.  
         [0057]     Next, the operation of the biopsy forceps  10  having such a structure will be described.  
         [0058]     A tissue is obtained by use of the biopsy forceps  10 , and the biopsy forceps  10  is pulled out of a channel of an endoscope. Then, as shown in  FIG. 9A , the obtained tissue extractor  18   a  is moved forward along the flexible sheath  12  to bring the rubber  62   a  into contact with a proximal end of a support  32 . In that state, the treatment portion  14  and the obtained tissue extractor  18   a  are put into the collection bottle  84  filled with a fixing solution  84   a  such as formalin, and the fitting portion  64   b  of the cover  64   a  is fitted in an opening  84   b  of the collection bottle  84 .  
         [0059]     In this state, as shown in  FIG. 9B , the cup bodies  36   a,    36   b  are opened. The protrusions  72   a,    72   b  of the obtained tissue extractor  18   a  enter the receiving portions  52   a,    52   b  of the cup bodies  36   a,    36   b  through the holes  54   a,    54   b.  Thus, the obtained tissue  76  is pushed out. In that state, if the collection bottle  84  is lightly shaken, the obtained tissue  76  drops in the fixing solution  84   a.  The cup bodies  36   a,    36   b  are closed, and the biopsy forceps  10  is pulled out of the obtained tissue extractor  18   a.  The collection bottle  84  is sealed by the fitting portion  64   b  and the rubber  62   a.  The obtained tissue  76  in each of the collection bottles  84  is pathologically diagnosed.  
         [0060]     As has been described above, the following can be said according to this embodiment.  
         [0061]     After being easily dropped in the fixing solution  84   a  of the collection bottle  84 , the obtained tissue  76  can be pathologically diagnosed in a state where the cover  64   a  is disposed in the collection bottle  84 . Therefore, the obtained tissue  76  pushed out of the cup bodies  36   a,    36   b  does not need to be taken out on filter paper or the like.  
         [0062]     Next, a third embodiment will be described with FIGS.  10  to  14 B. This embodiment is a modification of the first embodiment described above, and identical signs are assigned to members identical to, or having functions identical with, the members described in the first embodiment, and such members are not described in detail.  
         [0063]     As shown in  FIG. 10 , an obtained tissue extractor  18   b  is disposed on an outer periphery of a flexible sheath  12  of a biopsy forceps  10  so that it can (slidably) move forward and backward along the axial direction of the flexible sheath  12 .  
         [0064]     As shown in  FIG. 11 , a treatment portion  14   a  of the biopsy forceps  10  in this embodiment is formed in a single swinging type. In this treatment portion  14   a,  a cup body  36   b  is immobile because it is fixed to the distal end of a support  32 , and one cup body  36   a  only opens/closes with respect to the cup body  36   b.    
         [0065]     The treatment portion  14   a  includes, inside the support  32 , a link  88  movable with respect to a coupling member  38  and coupled to a first pin rod  48 , and a rear extending arm  42   a  of the one cup body  36   a  coupled to the link  88  by a support shaft  89 . The rear extending arm  42   a  is supported on an immobile second pin rod  50  of the support  32 . The other cup body  36   b  is fixed at the distal end of the support  32 .  
         [0066]     Thus, due to the forward and backward movement of an operation wire  28  (see  FIG. 3B ), the coupling member  38  moves forward and backward, the link  88  pivots on a first pin rod  48 , and the rear extending arm  42   a  pivots on the second pin rod  50 . Then, the one cup body  36   a  opens/closes with respect to the other cup body  36   b.    
         [0067]     As shown in  FIGS. 12A and 13 , the obtained tissue extractor  18   b  has the following configuration. The obtained tissue extractor  18   b  includes a cylindrical portion  64 , and a U-shaped member  92  including a pair of arms  66   a,    66   b  having protrusions  72   a,    72   b.  The cylindrical portion  64  is separate from the U-shaped member  92 . A guide groove  94  is formed at a base of the arm  66   a  of the U-shaped member  92 . On an outer surface of the cylindrical portion  64 , an engagement pin  96  is formed which is movable in a state engaged in the guide groove  94 . The engagement pin  96  provided in the cylindrical portion  64  is engaged with the guide groove  94 . Thus, the engagement pin  96  moves along the guide groove  94 . Therefore, as shown in  FIG. 12B , the U-shaped member  92  can incline with respect to the cylindrical portion  64 . It is to be noted that a clearance  98  is formed in the arm  66   a  to prevent the cylindrical portion  64  from contacting during inclining.  
         [0068]     Next, the operation of the biopsy forceps  10  having such a structure will be described.  
         [0069]     The biopsy forceps  10  is operated to obtain a tissue  76 , and the biopsy forceps  10  is pulled out of the channel of the endoscope. Then, as shown in  FIG. 14A , the obtained tissue extractor  18   b  is moved forward to bring the cylindrical portion  64  into contact with the proximal end of the support  32 .  
         [0070]     In this state, as shown in  FIG. 14B , the operation portion  16  is operated to open the one cup body  36   a  with respect to the other cup body  36   b.  The one cup body  36   a  bumps into the planar portion  68   a  of the obtained tissue extractor  18   b,  and the protrusion  72   a  enters a receiving portion  52   a  of the cup body  36   a  through a hole  54   a.  Thus, the obtained tissue  76  is pushed out of the one cup body  36   a.    
         [0071]     Furthermore, when the one cup body  36   a  is opened, the engagement pin  96  is moved along the guide groove  94  of the U-shaped member  92  by drive force to open the cup body  36   a,  as shown in  FIG. 14C . That is, the U-shaped member  92  inclines around the engagement pin  96 , and the arm  66   b  is lifted such that the protrusion  72   b  enters the receiving portion  52   b  through the hole  54   b  of the other immobile cup body  36   b.  Thus, the obtained tissue  76  is pushed out of the other cup body  36   b.    
         [0072]     As has been described above, the following can be said according to this embodiment.  
         [0073]     It is possible to easily extract even the tissue  76  obtained in the pair of cup bodies  36   a,    36   b  of the single swinging biopsy cup. That is, it is also possible to push out and extract the obtained tissue  76  from the immobile cup body  36   b.    
         [0074]     A cover  64   a  (see  FIG. 9A ) may be attached to the proximal end of the cylindrical portion  64  described above. In this manner, the obtained tissue is taken into a collection bottle  84  owing to the function identical with the function described in the second embodiment.  
         [0075]     While several embodiments have been specifically described above referring to the drawings, this invention is not limited to the embodiments described above, and includes all embodiments implemented without departing from the spirit thereof.  
         [0076]     According to this invention, it is possible to provide an obtained tissue extractor and a biopsy forceps which make it easier to extract a tissue when extracting the tissue from a biopsy cup after the tissue has been obtained in the biopsy cup.