Patent Publication Number: US-2023138441-A1

Title: Assembly for Surgical Instrument and Surgical Kit

Description:
TECHNICAL FIELD 
     The disclosure relates to the technical field of medical apparatus and instruments, and in particular, to an assembly for a surgical instrument. The assembly includes a separation member used for separating target tissue and a packaging box for storing the separation member. 
     The disclosure further relates to a surgical kit. The surgical kit includes a surgical instrument and the above assembly. 
     BACKGROUND 
     A stapler suitable for surgery is a surgical instrument that can excise redundant tissue while suturing a wound of a patient, and is widely applied to resection and anastomosis of tissue in minimally invasive surgery such as abdominal surgery, gynecology departments, pediatric departments and thoracic surgery. The stapler enters a human body by using a cannula of a puncture outfit that accurately positions a surgical site, and then makes a longitudinal incision in the tissue and applies a suturing staple on an opposite side of the incision, so as to dissect and anastomose the tissue, which is similar to a book sewer. The stapler includes an end effector. The end effector includes a staple cartridge base and a staple abutting seat. The staple cartridge base is used to receive a staple cartridge. The stapler further includes a cutting component. The cutting component is operationally supported relative to the staple cartridge base. Once a doctor determines that the end effector is appropriately grasp the tissue and in a closed position, the stapler can be started to cut and suture the tissue. 
     During surgery, the doctor sometimes needs to cut and suture specific target tissue, but the target tissue is attached to other tissue. For example, the doctor sometimes needs to cut and suture a blood vessel, but the blood vessel is usually attached to other tissue. In order to cut and suture the blood vessel, the doctor needs to strip the blood vessel from other tissue, then makes the blood vessel be between the staple abutting seat and the staple cartridge base, and finally uses the stapler to cut and suture the blood vessel. 
     When the doctor operates a conventional surgical instrument, and if the doctor needs to cut and suture the specific target tissue, the doctor usually needs to repeatedly adjust an angle of the surgical instrument to cause a far end of the end effector to align the target tissue, applies force to the surgical instrument in a direction toward the far end, to cause the far end of the end effector to separate the target tissue and then to cause the target tissue to be between the staple abutting seat and the staple cartridge base, so as to cut and suture the target tissue. 
     However, the design of the far end of the conventional end effector is not suitable for the stripping of the target tissue, and it is laborious for the doctor to use the end effector of the surgical instrument to separate the target tissue. 
     SUMMARY 
     In view of the deficiency in the prior art, the disclosure is intended to provide an assembly for a surgical instrument. The assembly includes a separation member used for separating target tissue and a packaging box for storing the separation member. 
     The disclosure is achieved by the following technical solutions. The assembly for a surgical instrument includes a separation member and a packaging box. The separation member and a surgical instrument switch between a first state and a second state by means of a clipping mechanism. In the first state, the separation member is connected to the surgical instrument. In the second state, the separation member is detached from the surgical instrument. The packaging box includes an accommodation portion used for accommodating the separation member, and further includes an operating member. The operating member drives the clipping mechanism to switch the separation member from the first state to the second state. 
     In some embodiments, the operating member includes an operating portion and a driving portion. The operating portion is pressed by an operator. The driving portion drives the clipping mechanism to switch the separation member from the first state to the second state. 
     In some embodiments, the operating portion performs first movement to drive the driving portion to perform second movement, so as to switch the separation member from the first state to the second state. 
     In some embodiments, the first movement includes rotation; and the second movement includes rotation. 
     In some embodiments, the packaging box includes a housing. The accommodation portion is disposed to the housing. The housing further includes a first sidewall and a second sidewall surrounding the accommodation portion. There is a gap between the first sidewall and the second sidewall. The first sidewall forms the operating portion. 
     In some embodiments, the operating portion includes a free end and a connection end connected to the second sidewall. The free end rotates around a junction of the connection end and the second sidewall, to drive the driving portion to move. 
     In some embodiments, a rotation axis of the free end is perpendicular to a central symmetry plane in a longitudinal direction of the packaging box. 
     In some embodiments, at least one portion of the operating portion is made of an elastic material, and the at least one portion of includes the connection end. 
     In some embodiments, an extending direction of the operating portion is perpendicular to an extending direction of the driving portion. 
     In some embodiments, the packaging box includes a housing. The housing is provided with an opening hole. The opening hole is disposed opposite to the driving portion. 
     In some embodiments, the accommodation portion is provided with a guide surface. The guide surface is used to guide the separation member to be inserted into the accommodation portion along the guide surface. 
     In some embodiments, the accommodation portion is provided with an abutment surface extending lengthwise. The abutment surface is used to limit the separation member. 
     In some embodiments, the accommodation portion is further provided with a guide surface. The guide surface is used to guide the separation member to move into the accommodation portion along the guide surface. The abutment surface and the guide surface intersect with each other and are disposed at an angle. 
     In some embodiments, the accommodation portion has an open end and a closed end. The open end is used for inserting the separation member into the accommodation portion. The closed end is used to limit the separation member. 
     In some embodiments, a protrusion is disposed on a surface of the accommodation portion. 
     In some embodiments, the clipping mechanism includes a clipping portion disposed to the separation member and a clipping port disposed to the surgical instrument. In the first state, the clipping portion is in elastically-mated connection with the clipping port. The operating member drives the clipping portion to detach from the clipping port, so that the separation member switches from the first state to the second state. 
     In some embodiments, the packaging box is made of a transparent material. 
     Compared with the prior art, the beneficial effects of the disclosure are that, the assembly of the disclosure includes the separation member and the packaging box. The separation member is used for stripping the target tissue, to make the operation of a doctor easier and more convenient. The packaging box can not only provide packaging for the separation member, but also serve as a disassembling tool of the separation member relative to the surgical instrument, of which design is very artful. 
     The disclosure further provides to a surgical kit. The surgical kit includes a surgical instrument and the above assembly. 
     The disclosure is achieved by the following technical solutions. The surgical kit includes the surgical instrument and the assembly described in any one of the above. A separation member is mounted to the surgical instrument to strip tissue. 
     In some embodiments, the separation member is detachably mounted to the surgical instrument by using a mating mechanism. The mating mechanism includes an insertion portion disposed to the separation member and an insertion channel disposed to the surgical instrument. The mating mechanism further includes a clipping portion disposed to the separation member and a clipping port disposed to the surgical instrument. When the clipping portion and the insertion portion are inserted into the clipping portion to be in clipped connection with the clipping port, the separation member is fixed to the surgical instrument. 
     In some embodiments, a sidewall of the insertion channel is provided with a channel groove extending from a far end to a near end. An operating member includes an operating portion and a driving portion. The driving portion drives the clipping portion to detach from the surgical instrument. A width of the driving portion is less than a width of the channel groove. 
     Compared with the prior art, the beneficial effects of the disclosure are that, the surgical kit includes the assembly and the surgical instrument, which can meet requirements of the doctor for separating the target tissue and cutting and suturing the target tissue; and the surgical kit is convenient in operation. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG.  1    is a front view of a surgical instrument according to the disclosure. 
         FIG.  2    is a perspective matching view of a staple abutting seat of the surgical instrument shown in  FIG.  1    and a separation member, showing a front side and partial back side, respectively. 
         FIG.  3    and  FIG.  4    are three-dimensional views of the separation member shown in  FIG.  2   . 
         FIG.  5    is a three-dimensional exploded view of the separation member shown in  FIG.  4   . 
         FIG.  6    is a partial three-dimensional view of a staple abutting seat of the surgical instrument shown in  FIG.  1   . 
         FIG.  7    and  FIG.  8    are three-dimensional views of a combination formed by a staple abutting seat, a separation member and a packaging box. 
         FIG.  9    and  FIG.  10    are three-dimensional exploded views of the combination shown in  FIG.  8   . 
         FIG.  11    is a three-dimensional view of a packaging box shown in  FIG.  10   . 
         FIG.  12    and  FIG.  13    are cross-sectional views in a longitudinal direction in  FIG.  7   ; and state changes of  FIG.  12    to  FIG.  13    show a state changing process of using a packaging box to detach a separation member. 
         FIG.  14    is an enlarged view of a part A in  FIG.  12   . 
         FIG.  15    is an enlarged view of a part B in  FIG.  12   . 
         FIG.  16    is a three-dimensional view of a separation member according to a second implementation of the disclosure.  FIG.  17    is a three-dimensional exploded view of the separation member shown in  FIG.  16   . 
         FIG.  18    is a three-dimensional exploded view of a separation member according to a third implementation of the disclosure. 
         FIG.  19    is a three-dimensional view of a separation member according to a fourth implementation of the disclosure. 
         FIG.  20    is a three-dimensional exploded view of the separation member shown in  FIG.  19   . 
         FIG.  21    is a three-dimensional view of a separation member mounted to a staple abutting seat according to a fifth implementation of the disclosure. 
         FIG.  22    is a three-dimensional view of the separation member shown in  FIG.  21   . 
         FIG.  23    is a three-dimensional view of a separation member mounted to a staple abutting seat according to a sixth implementation of the disclosure. 
         FIG.  24    and  FIG.  25    are three-dimensional exploded views of  FIG.  23   . 
         FIG.  26    is a three-dimensional view of the separation member shown in  FIG.  23   . 
         FIG.  27    is a three-dimensional view of a separation member mounted to a staple abutting seat according to a seventh implementation of the disclosure. 
         FIG.  28    is a three-dimensional view of the separation member shown in  FIG.  27   . 
         FIG.  29    is a three-dimensional exploded view of the separation member shown in  FIG.  28   . 
     
    
    
     DETAILED DESCRIPTION OF THE EMBODIMENTS 
     To make the objectives, technical solutions and advantages of the disclosure clearer, the disclosure is further described in detail with reference to the drawings and embodiments. It should be understood that the specific examples described here are merely used to explain the disclosure, and are not used to limit the disclosure. Based on the embodiments in the disclosure, all other embodiments obtained by those of ordinary skilled in the art without creative work shall fall within the protection scope of the disclosure. 
     The terms “near”, “rear”, “far” and “front” are used herein with respect to a clinician manipulating a handle assembly of a surgical instrument. The terms “near” and “rear” refer to portions close to the clinician; and the terms “far” and “front” refer to portions away from the clinician. For example, the handle assembly is on a near side and a rear side, and an end effector is on a far side and a front side. For another example, a near side end of a certain part represents an end relatively close to the handle assembly, and a far side end represents an end relatively close to the end effector. In the disclosure, a relative positional relationship between the parts of the separation member, for example, being relatively located on a “near” end or a “far” end, is based on the state in which the separation member is mounted to the surgical instrument. The terms “upper” and “lower” are based on relative positions of a staple abutting seat and a staple cartridge base of the end effector. Specifically, the staple abutting seat is at the “upper” portion, and the staple cartridge base is at the “lower” portion. 
     The “longitudinal direction” is defined as a direction from far to near or a direction from near to far. The “longitudinal direction” of the separation member is defined according to the state in which the separation member is mounted to the surgical instrument. The “longitudinal direction” of the packaging box is defined according to the state in which the separation member is mounted to the packaging box, that is, the longitudinal direction of the packaging box is parallel to the longitudinal direction of the separation member. In addition, that a component extends lengthwise means that a length of the component is greater than a width of the component, for example, the entire component is long-strip-shaped. However, it is to be understood that, “lengthwise extending” does not limit the specific shape and setting position of the component. 
     A surface of the separation member close to a side of target tissue is defined as a “front surface”, and a surface away from the side of the target tissue is defined as a “back surface”. Specifically, when the separation member is operated, a concave surface of the working portion is close to the target tissue and can strip the target tissue from other tissues. The surface of the side where the concave surface is located is defined as the front surface, and the surface of the side where a convex surface is located is defined as the back surface. 
     It is to be understood that, the orientations “near”, “far”, “rear”, “front”, “upper”, “lower”, “front surface”, “back surface” are defined for ease of description. However, the surgical instrument may be used in various directions and positions. Therefore, these terms expressing relative positional relationships are not restrictive and absolute. The “longitudinal direction” is also defined for ease of description. In the disclosure, the above definitions shall comply with the above explicit stipulations and limitations if there are other explicit stipulations and definitions. 
     In the disclosure, unless expressly specified and limited otherwise, the terms such as “connected to each other” should be understood in a broad sense. For example, “connected to each other” may be a fixed connection, a detachable connection, a movable connection, or an integrated; or may be a direct connection or an indirect connection by means of an intermediate medium; or may be an internal communication between two elements or an interaction relationship between two elements. Except that “connection” does not include integration, “connection” has the same meaning as “connected to each other”. For those of ordinary skill in the art, specific meanings of the above terms in the disclosure may be understood according to a specific condition. 
       FIG.  1    shows a surgical instrument  100  in the disclosure. 
     Referring to  FIG.  1   , the surgical instrument provided in the disclosure is a stapler, preferably, an electric stapler. The surgical instrument  100  includes a host  10  and a battery pack  12  detachably mounted with the host  10 . Those skilled in the art may think that, the surgical instrument may also be a manual stapler, and any solution that is the same as or similar to this implementation is covered within the protection scope of the disclosure. 
     The host  10  includes a rod body assembly  14 , a housing  16  disposed on one end of the rod body assembly  14 , and an end effector  18  disposed on the other end of the rod body assembly  14 . A cutting component (not shown) is disposed in the end effector  18 . 
     The rod body assembly  14  includes a cannula  20  and a core shaft (not shown) accommodated in the cannula  20 . A motor and a transmission mechanism are disposed in the housing  16 . The motor drives the end effector  18  and the cutting component by using the transmission mechanism. The end effector  18  includes a staple cartridge base  28  and a staple abutting seat  30  rotatably connected to the staple cartridge base  28 . The staple cartridge base  28  is used to operationally support a staple cartridge assembly (not shown) located therein. The staple abutting seat  30  may be selectively moved between an open position and a closed position, so as to clamp the tissue or loosen the tissue. The cutting component is disposed in the end effector  18  to cut the tissue. The staple cartridge assembly is used to suture the tissue. 
     The transmission mechanism includes an end effector driving apparatus. The end effector driving apparatus drives the staple abutting seat  30  of the end effector  18  to rotate relative to the staple cartridge base  28 , so as to be selectively moved between the open position and the closed position. Generally, the end effector  18  driving apparatus includes a gear, a cam and the cannula  20 . The gear drives the cannula  20  to do linear movement by means of the switching of the cam. By means of the linear movement of the cannula  20 , the staple abutting seat  30  is driven to rotate by using a switching mechanism. A specific structure of the end effector driving apparatus is the same as or similar to that in the prior art, which is not described herein again. 
     The transmission mechanism further includes a cutting component driving apparatus. Generally, the cutting component driving apparatus includes a gear, a rack and a core shaft. The gear rotates to drive the rack, the core shaft and the cutting component to do linear movement, so that the cutting component may cut the tissue. A specific structure of the cutting component driving apparatus is the same as or similar to that in the prior art, which is not described herein again. 
     When the surgical instrument is used, the end effector driving apparatus first drives the cannula  20  to drive the staple abutting seat  30  to rotate to be mated with the staple cartridge base  28 , so as to clamp the target tissue. Then, the motor starts and rotates forward; the cutting component driving apparatus drives the cutting component to advance by using the core shaft; and the cutting component moves from an initial position to a termination position in the end effector  18  of the surgical instrument, and synchronously pushes a staple-pushing block in the staple cartridge to move from the initial position to the termination position, so as to achieve an effect of suturing the cut tissue while redundant tissue is cut. Next, the motor rotates backward, and the cutting component driving apparatus drives the cutting component to retract to the initial position by using the core shaft. Then, the end effector driving apparatus drives the cannula  20  to drive the staple abutting seat  30  to open, so as to loosen the tissue. Finally, the end effector driving apparatus drives the cannula  20  to drive the staple abutting seat  30  to close. Definitely, before and after the surgical instrument is used, the staple abutting seat  30  is required to be closed relative to the staple cartridge base  28 , so that the end effector  18  extends into a body of a patient or is removed from the body of the patient via the cannula of a puncture outfit, and details are not described again. 
       FIG.  2    to  FIG.  15    show the separation member in a first implementation of the disclosure. The separation member is used in cooperation with the surgical instrument  100 . 
     Referring to  FIG.  1    and  FIG.  2   , this implementation further provides the separation member  200  cooperatively used with the surgical instrument  100 . The separation member  200  is used to strip the tissue. Specifically, the separation member  200  is used to strip the target tissue from other tissue, so that the surgical instrument  100  may conveniently cut and suture the target tissue. For example, a doctor first uses the separation member  200  to strip the blood vessel from other tissue, and then uses the surgical instrument  100  to cut and suture the stripped blood vessel. 
     The separation member  200  is detachably connected to the surgical instrument  100 . That is to say, the separation member  200  switches between a first state and a second state. In the first state, the separation member  200  is connected to the surgical instrument  100 ; and in the second state, the separation member  200  is detached from the surgical instrument  100 . 
     Therefore, when the separation member  200  is required to be used, the doctor connects the separation member  200  and the surgical instrument  100 . The doctor first uses the separation member  200  to strip the target tissue from other tissue, and then moves the surgical instrument  100  forward, to cause the target tissue to be between the staple cartridge base  28  and the staple abutting seat  30 , so as to operate the surgical instrument  100  to cut and suture the target tissue. When the separation member  200  is not required to be used, the doctor switches the separation member  200  from the first state to the second state, so that the separation member  200  is detached from the surgical instrument  100 . In this way, the separation member  200  can be prevented from occupying surgical space to affect the convenience of the surgical instrument  100  for cutting and suturing other tissue. 
     Specifically, the separation member  200  is detachably connected to the end effector  18  of the surgical instrument  100 . The end effector  18  is a working component in the surgical instrument  100  that is in direct contact with the tissue and cuts and sutures the tissue. That the separation member  200  is detachably connected to the end effector  18  conforms to the operation habits of the doctor and facilitates the operation of the doctor. 
     More specifically, the separation member  200  is detachably connected to the staple abutting seat  30  of the end effector  18 . Since the staple abutting seat  30  of the conventional surgical instrument  100  is not equipped with the staple cartridge and other components, the separation member  200  is detachably connected to the staple abutting seat  30 , so that the design is more rational by rationally using the staple abutting seat  30  without affecting the mounting and dismounting of other components (such as the staple cartridge). More specifically, the separation member  200  is detachably connected to a far end of the staple abutting seat  30 , which is more conforms to the operation habits of the doctor and facilitates the operation of the doctor. 
     Referring to  FIG.  3    to  FIG.  5   , the separation member  200  includes a mounting portion  220  and a working portion  230 . The mounting portion  220  is detachably connected to the surgical instrument  100 , and specifically, is detachably connected to the far end of the staple abutting seat  30  of the end effector  18 . The working portion  230  is used to strip the tissue. 
     The mounting portion  220  is detachably connected to the surgical instrument  100  by using the mating mechanism. The mating mechanism includes an insertion mechanism and a clipping mechanism. The insertion mechanism includes an insertion portion  222  disposed to the separation member  200  and an insertion channel  50  disposed on the surgical instrument  100 . The clipping mechanism includes a clipping portion  240  disposed on the separation member  200  and a clipping port  60  disposed on the surgical instrument  100 . The insertion channel  50  communicates with the clipping port  60 . Specifically, the clipping port  60  communicates with a near end of the insertion channel  50  and penetrates a sidewall of the insertion channel. When the separation member  200  is mounted, the insertion portion  222  and the clipping portion  240  are inserted into the surgical instrument  100  along the insertion channel  50 . After a certain stroke is inserted, the clipping portion  240  is clipped in the clipping port  60 , so that the separation member  200  is fixed on the surgical instrument  100 . Therefore, the mounting portion  220  of the separation member  200  is detachably connected to the surgical instrument  100  through insertion and clipping, thereby achieving reliable mounting and convenient dismounting. 
     The mounting portion  220  includes the insertion portion  222  and the clipping portion  240  that are connected to each other. The clipping portion  240  is in elastically-mated connection with the surgical instrument  100 . That is to say, the clipping portion  240  is connected to the surgical instrument  100  under the action of elastic force, and is detached from the surgical instrument  100  by overcoming the action of elastic force, so that a reliable connection and convenient dismounting can be realized. A source of the elastic force may be the elasticity of the clipping portion  240  itself. Alternatively, other elastomer may abut against the clipping portion  240 , and provide the elastic force for the clipping portion  240 . 
     Specifically, the clipping portion  240  is in elastically-mated connection with the clipping port  60 . That is to say, the clipping portion  240  is clipped in the clipping port  60  under the action of elastic force, so that the separation member  200  is fixed to the surgical instrument  100 . By overcoming the action of elastic force, the clipping portion  240  may be detached from the clipping port  60 , so that the separation member  200  is detached from the surgical instrument  100 . 
     The clipping portion  240  has a first end  241  and a second end  242 . The first end  241  is connected to the insertion portion  222 , and the second end  242  is in elastically-mated connection with the surgical instrument  100 . Specifically, the second end  242  rotates around the first end  241 , to cause the separation member  200  to be fixed to the surgical instrument  100  or to be detached from the surgical instrument, so as to achieve a detachable connection. The second end  242  rotates around the first end  241 , that is, a rotation axis is located at a position of the first end  241 . In this implementation, the rotation axis of the second end  242  is perpendicular to a central symmetry plane in a longitudinal direction of the separation member  200 . In this implementation, the first end  241  is located on the far end relative to the second end  242 . Those skilled in the art may think that, the first end  241  is located on the near end relative to the second end  242 . 
     Specifically, the first end  241  includes a rotating shaft  243 . The insertion portion  222  is provided with a shaft hole  224 . The rotating shaft  243  is mounted in the shaft hole  224 . The rotating shaft  243  rotates in the shaft hole  224  to cause the clipping portion  240  to rotate, so that the separation member  200  is finally detachably connected to the surgical instrument  100 . The rotation axis is a central axis of the rotating shaft  243 . 
     The shaft hole  224  is partially open, and the rotating shaft  243  is partially accommodated in the shaft hole  224 . That is to say, a circumferential extension angle of the shaft hole  224  is less than 360 degrees. For example, the circumferential extension angle of the shaft hole  224  is 180 degrees. The shaft hole  224  is partially open, so that an operation of mounting the rotating shaft  243  into the shaft hole  224  is very convenient, and a size of the separation member  200  may also be reduced, to cause a structure of the separation member  200  to be more compact. 
     The first end  241  of the clipping portion  240  is mounted to a first side surface  229  of the insertion portion  222 . It is to be noted that, the first side surface  229  refers to a surface of a back side of the insertion portion  222 , and the surface is not only limited to a plane area indicated by  229 . The second end  242  of the clipping portion  240  protrudes from a second side surface  227  of the insertion portion  222 . It is to be noted that, the second side surface  227  refers to a surface of a front side of the insertion portion  222 , and the surface is not only limited to a plane area indicated by  227 . The insertion portion  222  is provided with an opening  228  penetrating the first side surface  229  and the second side surface  227 . The second end  242  protrudes from the second side surface  227  by extending through the opening  228  from the first side surface  229 . 
     Therefore, the opening  228  provides space for movement stroke of the second end  242  of the clipping portion  240 . That is to say, a thickness of the insertion portion  222  provides space for the movement stroke of the second end  242  of the clipping portion  240 . In this way, the structure is reliable; and the size of the separation member  200  may also be reduced, so that the design of the structure is very rational. 
     The second end  242  of the clipping portion  240  is in elastically-mated connection with the clipping port  60  of the surgical instrument  100 . In this implementation, the clipping portion  240  itself has no elasticity. The separation member  200  further includes a support portion  250  abutting against the clipping portion  240 . The support portion  250  elastically supports the clipping portion  240 . The support portion  250  at least partially made of an elastic material. The support portion  250  provides elastic force for the clipping portion  240 . That is to say, the clipping portion  240  only needs to realize a function of being engaged with or detached from the surgical instrument  100 . The support portion  250  only needs to realize a function of providing the elastic force. The clipping portion  240  and the support portion  250  perform their own functions, so that process requirements for the clipping portion  240  and the support portion  250  can be reduced, which is more conform to mass production demand. 
     In order to apply acting force toward the second side surface  227  to the clipping portion  240 , to cause the clipping portion  240  to be held in the clipping port  60  without external force, so as to be maintained in the first state of being connected to the surgical instrument  100 , the support portion  250  is disposed on the first side surface  229  of the clipping portion  240  and is away from the second side surface  227  relative to the clipping portion  240 . 
     Specifically, the support portion  250  has a first portion  251  and a second portion  252  that are connected to each other. The first portion  251  is connected to the first side surface  229 . The second portion  252  abuts against the clipping portion  240 , and provides the elastic force for the clipping portion  240 , so as to cause the clipping portion  240  to have a trend to be clipped into the clipping port  60 . 
     In order to cause the support portion  250  to be reliably fixed on the separation member  200 , a connection portion  260  is disposed to the mounting portion  220 . The support portion  250  and the mounting portion  220  are fixed through welding at the connection portion  260 . Those skilled in the art may think that, other proper fixing method may also be used according to materials of the support portion  250  and the mounting portion  220 . 
     As described above, the shaft hole  224  used for mounting the rotating shaft  243  is partially open. In order to prevent the rotating shaft  243  from falling off the open shaft hole  224 , the support portion  250  covers the open portion of the shaft hole  224 . Specifically, the connection portion  260  is disposed adjacent to the shaft hole  224 . The connection portion  260  is away from the second end  242  of the clipping portion  240  relative to the shaft hole  224 . The far end of the first portion  251  of the support portion  250  is fixed on the connection portion  260 . Therefore, the support portion  250  extending from the far end to the near end may naturally cover the shaft hole  224 , so that the design of the structure is very rational. 
     It may be seen that, a position of one portion of the rotating shaft  243  is defined by the shaft hole  224 , and a position of the other portion is defined by the support portion  250 . Compared with the support portion  250  superposed on the totally-closed shaft hole  224 , the size of the separation member  200  can be obviously reduced, so that the structure of the separation member  200  can be more compact. 
     It is to be noted that, the disclosure focuses on reducing the size of the separation member  200  in a plurality of aspects. Although the reduction in size of these designs may not be noticeable to naked eyes (for example, less than 1 mm), the size of the separation member  200  is critical. The reason is that: the end effector  18  of the surgical instrument  100  and the separation member  200  are required to enter the body of the patient by extending through the cannula of the puncture outfit for operation; in order to achieve the purpose of minimally invasive surgery, the cannula of the puncture outfit is available in standard sizes (for example, 5 mm/10 mm/12 mm/15 mm); and widths of the end effector  18  and the separation member  200  must be less than a diameter of the cannula of the puncture outfit, so that when designing the end effector  18  and the separation member  200 , a designer needs to repeatedly consider and optimize the structure to achieve the purpose even if the size is reduced by less than 1 mm. 
     As described above, the first end  241  of the clipping portion  240  is mounted to the first side surface  229  of the insertion portion  222 . The first portion  251  of the support portion  250  is connected to the first side surface  229 . In order to better arrange the clipping portion  240  and the support portion  250 , the first side surface  229  of the insertion portion  222  is recessed inward to form accommodating space  226 . That is to say, the accommodating space  226  is disposed at the insertion portion  222  of the mounting portion  220 , and partial clipping portion  240  is accommodated in the accommodating space  226 . The accommodating space  226  includes the opening  228  penetrating the insertion portion  222 . The second end  240  of the clipping portion  240  protrudes from the opening  228  to be in clipped connection with the clipping port  60  in the first state. When the separation member  200  is in the first state, partial clipping portion  242  is accommodated in the accommodating space  226 . Preferably, when the separation member  200  is in the first state, partial support portion  250  is also accommodated in the accommodating space  226 . 
     Since the accommodating space  226  may store at least partial clipping portion  240 , or even store partial support portion  250 , the clipping portion  240  and the support portion  250  are prevented from completely protruding from the first side surface  229  of the insertion portion  222 . By rationally using the space of the insertion portion  222  itself, not only the size of the insertion portion  222  can be reduced, but also the structure of the insertion portion  222  can be more regular. The accommodating space  226  accommodates partial clipping portion  240 , and may also achieve limitation to the clipping portion  240 . The second end  242  of the clipping portion  240  is located in the opening  228 , so that the second end  242  may change the position under the action of the elastic force to achieve its function. Preferably, partial support portion  250  is accommodated in the accommodating space  226 ; and the support portion may be prevented from interfering with the insertion channel when the insertion portion is inserted into the insertion channel. 
     In this implementation, the insertion portion  222  and the clipping portion  240  have no elasticity. The separation member  200  further includes the elastomer abutting against the clipping portion  240 . The elastomer abuts against the support portion  240  to elastically support the clipping portion  240 . The elastomer is the support portion  250 . The support portion  250  at least partially made of an elastic material. The support portion  250  provides elastic force for the clipping portion  240 . Those skilled in the art may think that, the clipping portion  240  may also have the elasticity, and any solution that is the same as or similar to this implementation is covered within the protection scope of the disclosure. 
     In this implementation, there is no other elastomer between the support portion  250  and the clipping portion  240 , and the elastic force is provided for the clipping portion  240  only by the support portion  250 . That is to say, the elastomer abutting against the clipping portion  240  and elastically supporting the clipping portion  240  only includes the support portion  250 . Those skilled in the art may think that, on the basis of disposing the support portion  250 , another elastomer is disposed between the support portion  250  and the clipping portion  240 , for example, second elastomer. The second elastomer and the support portion  250  provide the elastic force for the clipping portion  240  together. Alternatively, the support portion  250  is not disposed, and the elasticity may also be provided for the clipping portion  240  only by other elastomer. Any solution that is the same as or similar to this implementation is covered within the protection scope of the disclosure. 
     The second end  242  of the clipping portion  240  includes a clipping surface  244  and a slope  246  disposed with the clipping surface  244  at an angle. As shown in  FIG.  3   , the clipping surface  244  extends vertically. As shown in  FIG.  2   ,  FIG.  3    and  FIG.  6   , the clipping surface  244  abuts against the sidewall of the clipping port  60  to prevent the separation member  200  from falling off the surgical instrument  100 . As shown in  FIG.  3   , the slope  246  obliquely extends upward in a direction from the near end to the far end. The upward here refers to a direction toward the opening of the clipping port  60 . Under the guide of the slope  246 , the position of the second end  242  is changed due to the rotation of the clipping portion  240  in a process of being inserted into the insertion channel  50 , so that the insertion portion  222  of the separation member  200  and the clipping portion  240  may be inserted into the insertion channel  50  more smoothly in the direction from the far end to the near end. 
     The second end  242  of the clipping portion  240  further includes a top surface  248  disposed between the clipping surface  244  and the slope  246 . The top surface  248  has a certain width, and may cause the structure of the second end  242  to be more reliable. The top surface  248  may be a straight surface, or may be the inclined slope  246 . If the top surface  248  is a slope, an inclined angle of the top surface  248  is preferably less than an inclined angle of the slope  246 . 
     It is to be noted that, in this implementation, the clipping portion  240  is integrally formed. Those skilled in the art may think that, the portions of the clipping portion  240  are independently formed and are connected in a specific connection manner. Any solution that is the same as or similar to this implementation is covered within the protection scope of the disclosure. 
     As described above, the mounting portion  220  of the separation member  200  includes the insertion portion  222  for mounting the clipping portion  240 . Referring to  FIG.  4    to  FIG.  6   , the insertion portion  222  extends lengthwise. Correspondingly, the insertion channel  50  extends from the far end surface of the surgical instrument  100  in a direction toward the near end. Specifically, the insertion channel  50  extends from the far end surface of the staple abutting seat  30  in the direction toward the near end. 
     It is well known to those skilled in the art that, the staple abutting seat  30  is provided with a knife-moving slot  33  extending lengthwise. The knife-moving slot  33  stores partial cutting component of the surgical instrument  100  and guides the movement of the cutting component. The knife-moving slot  33  is disposed in a center position of the staple abutting seat  30  and extends lengthwise. The insertion channel  50 , the clipping port  60  and the knife-moving slot  33  communicate with each other and are coaxially disposed, so that a regular structure is achieved. 
     The clipping port  60  communicates with the near end of the insertion channel  50  and penetrates the sidewall of the insertion channel  50 . Specifically, the clipping port  60  penetrates the sidewall of a staple against surface  31  of the staple abutting seat  30 . 
     Therefore, when the separation member  200  is required to be mounted to the surgical instrument  100 , the insertion portion  222  of the separation member  200  is aligned to the insertion channel  50 , and the separation member  200  is pushed in the direction from the far end to the near end. During pushing, the insertion channel  50  abuts against the slope  246  of the second end  242  of the clipping portion  240 , so that the clipping portion  240  rotates by overcoming the elastic force provided by the support portion  250 , until the second end  242  of the clipping portion  240  and the insertion portion  222  are successfully inserted into the insertion channel  50 . The separation member  200  is continuously pushed, until the second end  242  of the clipping portion  240  is flush with the clipping port  60 . The second end  242  of the clipping portion  240  rotates in a reverse direction under the action of the elastic force provided by the support portion  250 , and the second end  242  protrudes from the second side surface  227  of the insertion portion  222  and is clipped in the clipping port  60 . In this way, the separation member  200  is mounted in place. 
     The sidewall of the insertion channel  50 , specifically, the sidewall of the insertion channel  50  located on the staple against surface  31  of the staple abutting seat  30  includes a first excavated portion  51  and a second excavated portion  52  that communicate with the clipping port  60 . The second excavated portion  52  is located on the far end relative to the first excavated portion  51 . A width of the second excavated portion  52  is greater than a width of the first excavated portion  51 . A width of the clipping port  60  is greater than the width of the first excavated portion  51 . 
     During the inserting of the separation member  200 , the wider second excavated portion  52  may cause the insertion operation of the separation member  200  to be easier. During the moving of the separation member  200  in the second excavated portion  52 , the clipping portion  240  is not required to overcome the elasticity of the support portion  250  to rotate, and the support portion  250  is not required to be deformed, so that the service life of the separation member  200  may be prolonged, and the increasing of resistance due to the contact between the clipping portion  240  and the second excavated portion may also be prevented. When the slope  246  of the second end  242  of the separation member  200  is in contact with the first excavated portion  51 , the second end  242  of the clipping portion  240  may overcome the elasticity of the support portion  250  to rotate and is moved inside the first excavated portion  51 . When the separation member  200  is flush with the clipping port  60  by moving to the second end  242  of the clipping portion  240 , since the width of the clipping port  60  is greater than the width of the first excavated portion  51 , the clipping surface  244  of the clipping portion  240  may abut against the sidewall of the first excavated portion  51  adjacent to the clipping port  60 . In addition, the second end  242  of the clipping portion  240  rotates in the reverse direction under the action of the elastic force of the support portion  250  to protrude from the second side surface  227 , so that the second end  242  can be successfully clipped in the clipping port  60 , and the separation member  200  is mounted in place. 
     It may be seen that, through the rational design of the first excavated portion  51  and the second excavated portion  52 , not only the service life of the separation member  200  can be prolonged, but also the mounting operation of the separation member  200  can be easier and more convenient. 
     A length of the second excavated portion  52  is greater than a length of the first excavated portion  51 . That is to say, during the movement of the clipping portion  240  in the second excavated portion  52 , the clipping portion  240  is not required to overcome the elasticity of the support portion  250  to rotate, and the support portion  250  is not deformed, so that the service life of the separation member  200  can be prolonged. 
     The width of the first excavated portion  51  equals to a width of the knife-moving slot  33 . The knife-moving slot  33 , the clipping port  60 , the first excavated portion  51  and the second excavated portion  52  are coaxially disposed, so that a proper position of the separation member  200  after mounting may be guaranteed, the separation member does not deviate from the central axis, and the doctor may conveniently operate the separation member. 
     The second excavated portion  52 , the first excavated portion  51 , the clipping port  60 , and even the knife-moving slot  33  form a channel groove in the sidewall of the insertion channel  50  extending from the far end to the near end. 
     A first wedge portion  39  is disposed on the far end of the staple abutting seat  30 . The first wedge portion  39  has a first slope  38 . A second wedge portion  239  is disposed on the near end of the working portion  230 . The second wedge portion  239  has a second slope  238 . After the separation member  200  is mounted to the staple abutting seat  30 , the first slope  38  abuts against the second slope  238 . 
     Since the first slope  38  abuts against the second slope  238 , the first wedge portion  39  is superposed with the second wedge portion  239 , so that the separation member  200  may be mounted on the staple abutting seat  30  more reliably. In addition, the first wedge portion  39  may cause the far end of the staple abutting seat  30  to be thinner relative to other portions. The second wedge portion  239  may cause the near end of the working portion to be thinner relative to other portions. That is to say, even if the first wedge portion  39  is superposed with the second wedge portion  239 , a size of the junction is not obviously increased. In an aspect, the superposition causes the mounting to be reliable; and in another aspect, the size is not obviously increased by the superposition, so that the design is very rational. 
     The second excavated portion  52  is disposed to the first slope  38 . The mounting portion  220  extends from the second slope  238  in the direction toward the near end, so that the structure is compact, and the design is rational. 
     The combined thickness of the first wedge portion  39  and the second wedge portion  239  is equivalent to the thickness of the staple abutting seat  30  adjacent to the near end of the first slope  38 , and/or is equivalent to the thickness of the separation member adjacent to the far end of the second slope  238 . 
     Since the thicknesses are equivalent, that is, the thicknesses are approximately equal, a step is prevented from appearing at the junction of the separation member  200  and the staple abutting seat  30 , so that the tissue can be prevented from being scratched. 
     As described above, the separation member  200  includes the mounting portion  220  and the working portion  230 . The working portion  230  is used to strip the tissue. 
     The working portion  230  includes the near end  231  and a far end  232 . In a direction from the near end  231  to the far end  232 , a width of the working portion  230  gradually decreases. When the working portion  230  strips the tissue, the narrow far end  232  preferentially contacts the tissue, so that the narrow far end  232  may be conveniently inserted into the tissue and strip the target tissue from other tissue, thereby achieving more convenient operation. 
     At least a portion of the working portion  230  extends in an arc line from the near end  231  to the far end  232 . The working portion  230  has a working surface  234  extending in the arc line and recessed inward. By means of the working surface  234  extending in the arc line, the working portion  230  may successfully pass through a gap between the target tissue and other tissue when stripping the tissue, to better guide the end effector  18  to pass through the gap between the target tissue and other tissue, so that the separation member  200  and the surgical instrument  100  can be more convenient in operation. 
     The working portion  230  extends in the arc line, and the working surface  234  extends in the arc line, so that the back side of a working member also extends in the arc line. The working portion  230  is regular in structure and good-looking in appearance. 
     Outer contour lines of the working portion  230  and the mounting portion  220  of the separation member  200  have not obvious edges and corners. All of the outer contour lines are rounded, so that the edges and corners may be prevented from cutting the tissue. 
     As described above, the separation member  200  is mounted on the far end of the surgical instrument  100 . The surgical instrument  100  has a mounting end used for mounting the separation member  200 . The separation member  200  further includes an elastic member  280 . The elastic member  280  abuts against an end surface of the mounting end. Specifically, the elastic member  280  abuts against the end surface of the far end of the staple abutting seat  30 . 
     Since the end surface of the far end of the mounting end is hard and the elastic member  280  is flexible and deformable, when the elastic member  280  abuts against the end surface of the far end of the mounting end, the end surface of the far end of the mounting end may be prevented from scratching the tissue, and the risk that the tissue is sandwiched in a gap between the end surface of the far end of the mounting end and the separation member  200  may also be reduced, so that unnecessary pulling to the tissue can be avoided, thereby preventing the tissue from being damaged. 
     An outer surface of the elastic member  280  protrudes from an outer surface of the mounting end or is flush with the outer surface of the mounting end. Specifically, the staple abutting seat has the staple against surface  31  and a back surface  32 . In this implementation, preferably, the outer surface of the elastic member  280  is flush with the back surface  32  of the staple abutting seat  30  or protrudes from the back surface  32 . When the target tissue is stripped from other tissue, since the mounting end on the side of the back surface  32  of the staple abutting seat  30  is easy to scratch other tissue, the outer surface of the elastic member  280  is flush with the back surface  32  of the staple cartridge or protrudes from the back surface  32 , so that the end surface of the far end of the mounting end may be prevented from scratching the tissue to the greatest extend, and the risk that the tissue is sandwiched in the gap between the end surface of the far end of the mounting end and the separation member  200  may be reduced to the greatest extend. 
     The separation member  200  is provided with a slot  290 . The mounting end has a first outer surface  91 , and the separation member  200  has a second outer surface  202 . When the separation member  200  is in the first state, the slot  290  is located at an adjacent portion of the first outer surface  91  and the second outer surface  202 . The elastic member  280  is disposed in the slot  290 . By using the slot  290 , the elastic member  280  may be better mounted without affecting the functions of the elastic member  280 . 
     The outer surface of the elastic member  280  protrudes from the second outer surface  202  or is flush with the second outer surface  202 . By using the slot  290 , the elastic member  280  may be better mounted, but, there is a risk of scratching the tissue at the near end and/or the far end of the slot  290 . By causing the outer surface of the elastic member  280  to protrude the second outer surface  202  or to be flush with the second outer surface  202 , the elastic member  280  can be conveniently mounted, and the tissue can also be prevented from being scratched. 
     A shape of the elastic member  280  matches a shape of the slot  290 , so that the tissue can be prevented from being scratched to the greatest extent. The elastic member  280  is in interference fit with the slot  290 , so that the elastic member  280  can be mounted reliably, and the elastic member  280  can conveniently protrude from the surface adjacent to the elastic member, thereby preventing the tissue from being scratched to the greatest extent. 
     The slot  290  extends circumferentially. Therefore, the mounting of the elastic member  280  may be more reliable. 
     A bottom surface of the slot  290  is rough. Specifically, the bottom surface of the slot includes depressions and/or projections, which may increase the friction force between the slot  290  and the elastic member  280 . In this way, the elastic member  280  can be reliably mounted in the slot  290 . 
     A shape of the bottom surface of the slot  290  is symmetrically designed relative to the central symmetry plane in the longitudinal direction of the separation member  200 . Since the structure is regular, the elastic member  280  is evenly stressed, so that an effect of preventing tissue scratching can be better achieved. 
     In this implementation, the elastic member  280  is a component formed independently. The elastic member  280  is manually disposed in the slot  290 . Those skilled in the art may think that, the elastic member  280  may also be formed in the slot  290  in a spraying manner. Any solution that is the same as or similar to this implementation is covered within the protection scope of the disclosure. 
     Referring to  FIG.  7    to  FIG.  13   , this implementation further provides a packaging box  300  of the separation member  200 . The separation member  200  may be accommodated in the packaging box  300 . The packaging box  300  provides an external packing for the separation member  200 , so that the separation member  200  is conveniently transported and stored. The separation member  200  and the packaging box  300  form an assembly. The assembly may be sold and purchased separately, or may be sold and purchased together with the surgical instrument  100  to form a surgical kit. Regardless of sale and purchase methods, the needs of the doctor to strip the target tissue can be met. Definitely, the separation member  200  in this implementation may also be sold and purchased separately. 
     The packaging box  300  includes an accommodation portion  320  used for accommodating the separation member  200 . The separation member  200  may be accommodated in the packaging box  300  by inserting the accommodation portion  320 . The packaging box  300  includes a housing  350 . A surface of a side of the housing  350  is recessed inward to form the open accommodation portion  320 . The accommodation portion  320  has an open end, so that the separation member  200  can be conveniently put in or taken out from the packaging box  300  from the open end. 
     The accommodation portion  320  has a closed end  330  spaced apart from the open end. A shape of the closed end  330  may match a shape of the far end  232  of the separation member  200 . The shape of the closed end  330  may also not match the shape of the far end  232  of the separation member  200 , as long as the closed end  330  may limit the inserting of the separation member  200 . Therefore, during the inserting of the separation member  200  into the accommodation portion  320 , when the far end  232  of the separation member  200  abuts against the closed end  330  of the accommodation portion  320 , an operator can perceive that the separation member  200  has been accommodated in place. 
     The accommodation portion  320  is provided with a convex rib  324 . The convex rib  324  is provided with a guide surface  326 . The separation member  200  slides into the accommodation portion  320  along the guide surface  326 . The guide surface  326  may cause the separation member  200  to be inserted into the accommodation portion  320  more easily and accurately. 
     The convex rib  324  is further provided with an abutment surface  328 . The abutment surface  328  and the guide surface  326  intersect with each other and are disposed at an angle, specifically, at an obtuse angle. The abutment surface  328  is close to the closed end  330  of the accommodation portion  320  relative to the guide surface  326 . The abutment surface  328  limits the separation member  200 . Specifically, when the separation member  200  is mounted in the accommodation portion  320 , the abutment surface  328  abuts against partial working surface  234  of the separation member  200 , so that the separation member  200  can be accommodated in the accommodation portion  320  more reliably. 
     It may be seen that, the convex rib  324  may not only define the size of the accommodation portion  320 , but also guide the operation of the separation member  200  to slide into the accommodation portion  320 . After the separation member  200  slides into the accommodation portion  320 , the convex rib  324  may also limit the separation member  200 , so that the design of the structure is very rational. 
     Referring to  FIG.  11   , a protrusion  322  is disposed on a surface of the accommodation portion  320 . The protrusion  322  may support the working portion  230  of the separation member  200 , and reduce a contact area between the working portion  230  and the accommodation portion  320 , so that the separation member  200  can be inserted or taken out more easily. In this implementation, the protrusion  322  extends lengthwise and is approximately in a strip shape. The protrusion  322  extends in a longitudinal direction. Those skilled in the art may think that, the protrusion  322  may be in other shapes. 
     As described above, the separation member  200  includes the elastic member  280  abutting against the end surface of the mounting end of the surgical instrument  100 . Preferably, the outer surface of the elastic member  280  protrudes from the outer surface of the working portion  230  of the separation member  200 . Therefore, the elastic member  280  elastically abuts against an inner surface of the accommodation portion  320 . 
     During the inserting of the separation member  200  into the accommodation portion  320  of the packaging box  300 , and when the elastic member  280  elastically abuts against the inner surface of the accommodation portion  320 , the operator can perceive the effect of damping. The effect of damping provides operation feedback for the operator, so that the operator may determine whether the separation member  200  is accommodated in place by means of such feedback. That is to say, in addition to the foregoing closed end  330  allowing the operator to perceive that the separation member  200  has been inserted in place, that the elastic member  280  elastically abuts against the inner surface of the accommodation portion  320  further provides feedback for the operator, thereby further improving operation experience. In addition, the friction force between the elastic member  280  and the inner surface of the accommodation portion  320  may prevent the separation member  200  from falling off the accommodation portion  320 . 
     As described above, the separation member  200  is detachably connected to the surgical instrument  100  by using a mating mechanism. The separation member  200  switches between a first state and a second state. In the first state, the separation member  200  is connected to the surgical instrument  100 ; and in the second state, the separation member  200  is detached from the surgical instrument  100 . 
     In this implementation, preferably, the packaging box  300  may not only accommodate the separation member  200 , but also switch the separation member  200  between the first state and the second state. That is to say, the packaging box  300  can not only provide packaging for the separation member  200 , but also serve as a disassembling tool of the separation member  100  relative to the surgical instrument  200 , of which design is very artful. 
     Specifically, the packaging box  300  includes an operating member  340 . The operating member  340  acts on the mating mechanism to switch the separation member  200  from the first state to the second state. More specifically, the operating portion  342  acts on the clipping mechanism to switch the separation member  200  from the first state to the second state. 
     The operating member  340  includes the operating portion  342  and a driving portion  348  that are connected to each other. The operating portion  342  is pressed by the operator. The driving portion  348  acts on the clipping mechanism to switch the separation member  200  from the first state to the second state. 
     The operating portion  342  performs first movement to drive the driving portion  348  to perform second movement, so as to switch the separation member  200  from the first state to the second state. The first movement includes rotation; and the second movement includes rotation. 
     The packaging box  300  includes the housing  350 . The housing  350  is partially recessed inward to form the accommodation portion  320 . The housing  350  includes a first sidewall  351  and a second sidewall  352  surrounding the accommodation portion  320 . There is a gap  353  between the first sidewall  351  and the second sidewall  352 . The first sidewall  351  forms the operating portion  342 . The gap  353  extends lengthwise in a direction from one end of the housing  350  to the other end. An extending length of the gap  353  is less than an extending length of the housing  350 . Due to the presence of the gap  353 , the first sidewall  351  may move relative to the second sidewall  352 , so that the driving portion  348  is driven to move and finally acts on the separation member  200  to switch the separation member  200  from the first state to the second state. In addition, the first sidewall  351  is a portion of the housing  350 . A portion of the housing  350  forms the operating portion  342 , and other components are not required to be extra disposed to form the operating portion  342 . Therefore, a simple structure and rational design can be achieved. 
     The operating portion  342  rotates to drive the driving portion  348  to rotate. Specifically, the first sidewall  351  includes a connection end  344  and a free end  346 . The driving portion  348  is connected to the free end  346 . The free end  346  rotates around the junction of the connection end  344  and the second sidewall to drive the driving portion  348  to rotate. Extra components are not required to be disposed, so that the simple structure and rational design can be achieved. 
     A rotation axis of the free end  346  is perpendicular to a central symmetry plane in a longitudinal direction of the packaging box  300 . The rotation axis of the free end  346  is also parallel to a rotation axis of the clipping portion  240 . Therefore, the assembly formed by the separation member  200  and the packaging box  300  may be regular in structure. 
     The connection end  344  of the operating portion  342  is made of an elastic material. Optionally, the entire operating portion  342  is made of the elastic material. Therefore, when the free end  346  is pressed, the connection end  344  is deformed, to cause the free end  346  to rotate around the junction of the connection end  344  and the second sidewall. Therefore, the doctor overcomes the elastic force of the operating portion  342  itself to drive the driving portion  348  to move, so that the separation member  200  may be switched from the first state to the second state. By using the elasticity of the operating portion  342  itself, the structure of the packaging box  300  can be simpler. By means of the elasticity of the operating portion  342  itself, the free end  346  is maintained in a raised state without external force, as shown in  FIG.  8   ,  FIG.  11    and  FIG.  12   . 
     Both the operating portion  342  and the driving portion  348  extend lengthwise. An extending direction of the operating portion  342  is perpendicular to an extending direction of the driving portion  348 . The operating portion  342  and the driving portion  348  that extend lengthwise and have the mutually perpendicular extending directions provide an enough stroke, so that the driving portion  348  may effectively the clipping portion  240 . Therefore, the separation member  200  can be successfully detached from the surgical instrument  100 . 
     The operating portion  342  is connected to the driving portion  348 , and cooperatively abuts against the clipping portion  240 . The operating portion  342  and the driving portion  348  are two independent components. Specifically, the driving portion  348  is a pin, and the pin is mated with a hole in the operating portion  342  to achieve the connection between the driving portion  348  and the operating portion  342 . Those skilled in the art may think that, the operating portion  342  and the driving portion  348  may also be integrally formed. 
     As shown in  FIG.  11    and  FIG.  12   , the housing  350  is provided with an opening hole  354  for the driving portion  348  to pass through. The opening hole  354  is disposed opposite to the driving portion  348 . Therefore, when the driving portion  348  is mounted, the driving portion  348  is connected to the operating portion  342  after extending through the opening hole  354 . Through the opening hole  354 , a mounting tool can conveniently extend to apply force to the driving portion  348 , so that the structure is rational in design. The driving portion  348  is connected to the free end  346  of the operating portion  342 . Correspondingly, the opening hole  354  is opposite to the free end  346  of the operating portion  342 . Therefore, rational layout can be achieved. 
     A width of the driving portion  348  is less than a width of the channel groove (including the second excavated portion  52 , the first excavated portion  51  and the clipping port  60  that successively communicate with each other) in the staple abutting seat  30 . During the detaching of the separation member  200  from the surgical instrument  100 , the driving portion  348  may be moved in the channel groove and maintained in a state of pressing the second end  242  of the clipping portion  240 . 
     It may be learned that, the operating member  340  acts on the clipping mechanism to switch the separation member  200  from the first state to the second state. 
     The far end of the accommodation portion  320  is closed to form the closed end  330 . When the separation member  200  is mounted to the surgical instrument  100 , the packaging box  300  accommodating the separation member  200  drives the separation member  200  to move toward the surgical instrument  100 . The closed end  330  pushes the separation member  200  to insert into the surgical instrument  100 . Therefore, the closed end  330  of the accommodation portion  320  of the packaging box  300  pushes the separation member  200  to switch from the second state to the first state. 
     The packaging box  300  is made of the transparent material, so that the packaging box is good-looking in appearance. When the separation member  200  is dismounted by using the packaging box  300 , the transparent packaging box  300  facilitates the operator to observe whether the dismounting operation is in place. 
     An application scenario of the separation member  200  in this implementation is described below. 
     After the separation member  200  leaves factory and before the separation member is used, the separation member  200  is located in the accommodation portion  320  of the packaging box  300 . The elastic member  280  on the separation member  200  elastically abuts against the inner side surface of the accommodation portion  320 . The separation member  200  is held in the packaging box  300  under the action of the elastic force of the elastic member  280 . 
     When the doctor needs to use the separation member  200  to strip the tissue during the using of the surgical instrument  100 , the doctor holds the housing  350  of the packaging box  300 , to align the mounting portion  220  of the separation member  200  with the insertion channel  50  disposed on the staple abutting seat  30  of the end effector  18  of the surgical instrument  100 , and pushes the packaging box  300  in a direction toward the surgical instrument  100 . During pushing, the insertion portion  222  of the separation member  200  and the clipping portion  240  are moved along the insertion channel  50 , until the second end  242  of the clipping portion  240  is flush with the clipping port  60  and clipped in the clipping port  60 . In this case, the separation member  200  has been mounted on the surgical instrument  100 . 
     Then, the doctor overcomes the friction force between the elastic member and the inner side surface of the accommodation portion  320  due to the elastic force of the elastic member  280 , to pull the packaging box  300  in a direction away from the surgical instrument  100 , so as to detach the packaging box  300  from the separation member  200 , so that the doctor may use the separation member  200  to strip the target tissue. Specifically, the narrow far end  232  of the working portion  230  of the separation member  200  is aligned with an interface of the target tissue and other tissue, and the surgical instrument  100  and the separation member  200  are pushed forward, until the separation member  200  strips the target tissue from other tissue. 
     After the separation member  200  strips the target tissue from other tissue, the doctor moves forward the surgical instrument  100  in a direction toward the far end  232 , to cause the target tissue to be between the staple abutting seat  30  and the staple cartridge base. Then, the doctor may use the surgical instrument  100  to cut and suture the target tissue. 
     When the doctor does not need to strip the tissue during the using of the surgical instrument  100 , the separation member  200  may be taken down from the surgical instrument  100 , to prevent the separation member  200  from occupying space to affect other operations when the surgical instrument  100  does not need the separation member  200 . Specifically, the doctor aligns the packaging box  300  with the separation member  200  to move to accommodate the separation member  200  in the accommodation portion  320  of the packaging box  300 . Then, the doctor presses the free end  346  of the operating portion  342 , and then the free end  346  rotates around the connection end  344  to drive the driving portion  348  to rotate, until the driving portion  348  abuts against the slop  246  or the top surface  248  of the second end  242  of the clipping portion  240 . The free end  346  of the operating portion  342  is continuously pressed, and the driving portion  348  drives the second end  242  of the clipping portion  240  to rotate against the acting force of the support portion  250 , until the second end  242  of the clipping portion  240  is detached from the clipping port  60 . Then, the doctor pulls the packaging box  300  in the direction away from the surgical instrument  100 . The packaging box  300  drives the insertion portion  222  of the separation member  200  to be detached from the insertion channel  50 , so that the separation member  200  is detached from the surgical instrument  100 . The separation member  200  detached from the surgical instrument  100  is located in the accommodation portion  320  of the packaging box  300 , which returns back to a state before the separation member is used and after the separation member leaves factory. It is to be noted that, after the driving portion  348  causes the second end  242  of the clipping portion  240  to be detached from the clipping port, the driving portion  348  maintains the state of pressing the second end  242  of the clipping portion  240 . That is to say, during the detaching of the separation member  200  from the surgical instrument  100 , the driving portion  348  presses the second end  242  of the clipping portion  240  all the time and applies force to the second end  242 . The driving portion  348  moves in the channel groove. Finally, the packaging box  300  drives the separation member  200  to detach from the surgical instrument  100 . 
       FIG.  16    to  FIG.  17    show the separation member  200   a  cooperatively used with the surgical instrument provided in a second implementation of the disclosure. 
     A difference between the separation member  200   a  of this implementation and the separation member in the first implementation is mainly described below. 
     In the first implementation, the elastic member circumferentially extends into an annular shape. The annular elastic member is mounted in a slot between the separation member and the far end surface of the staple abutting seat. 
     In this implementation, the elastic member  280   a  is in a bag shape. At least a portion of the working portion  230   a  is inserted in the elastic member  280   a.  The at least a portion of the working portion  230   a  has a same shape as the elastic member  280   a.  Specifically, the working portion  230   a  is inserted in the elastic member  280   a  from the far end to a portion adjacent to the mounting end of the surgical instrument. The end surface of the opening on the near end of the elastic member  280   a  abuts against the far end surface of the mounting end, to prevent the far end surface of the mounting end from scratching the tissue. 
       FIG.  18    shows the separation member cooperatively used with the surgical instrument provided in a third implementation of the disclosure. 
     A difference between the separation member  200   b  of this implementation and the separation member in the first implementation is mainly described below. 
     In the first implementation, a first end of the clipping portion includes a rotating shaft. The rotating shaft and other portions of the clipping portion are integrally formed. The insertion portion is provided with an open shaft hole. The rotating shaft is partially accommodated in the shaft hole. The support portion covers the open portion of the shaft hole, so that a second end of the clipping portion can rotate around the rotating shaft. 
     In this implementation, the separation member  200   b  includes an independent rotating shaft  234   b.  The first end of the clipping portion  240   b  is provided with a pin hole  299   b  extending through the rotating shaft  234   b.  The mounting portion of the separation member  200   b  is provided with circular holes  298   b  corresponding to two end portions of the pin hole  299   b.  The rotating shaft  234   b  successively extends through the first circular hole  298   b,  the pin hole  299   b  and the second circular hole  298   b,  so that the first end of the clipping portion  240   b  is rotatably mounted on the mounting portion. The rotating shaft  234   b  is mated with the first circular hole  298   b  and/or second circular hole  298   b,  to prevent the rotating shaft from falling off. 
     In addition, in this implementation, the shape of the elastic member  280   b  of the separation member  200   b,  the elastic member  280   b  and the mating mechanism of the working portion  230   b  are the same as that in the second implementation, which are not described again. 
       FIG.  19    to  FIG.  20    show the separation member cooperatively used with the surgical instrument provided in a fourth implementation of the disclosure. 
     A difference between the separation member  200   c  of this implementation and the separation member in the third implementation is mainly described below. 
     In the third implementation, the connection portion is disposed on a far side of the mounting portion of the separation member adjacent to the first end of the clipping portion. The first portion of the support portion is connected to the connection portion. The support portion extends toward the near end from the connection portion. The support portion applies the force to the clipping portion relative to the second portion of the near end, so that the clipping portion has a trend to be clipped in the clipping port of the surgical instrument. 
     In this implementation, the support portion  250   c  is disposed close to the near end of the clipping portion  240   c.  The near end of the support portion  250   c  is connected to the mounting portion  220   c  in a manner of welding. The support portion  250   c  has elasticity. The far end of the support portion  250   c  applies the force to the second end of the clipping portion  240   c,  so that the clipping portion  240   c  has a trend to be clipped in the clipping port  60   c  in the surgical instrument. 
       FIG.  21    to  FIG.  22    show the separation member cooperatively used with the surgical instrument provided in a fifth implementation of the disclosure. 
     A difference between the separation member  200   d  of this implementation and the separation member in the second implementation is mainly described below. 
     In the second implementation, the clipping portion itself has no elasticity, so that the support portion provides the elastic force for the clipping portion to cause the clipping portion to have a trend to be clipped in the clipping port of the surgical instrument. 
     In this implementation, the clipping portion  240   d  is at least partially made of the elastic material, so that the clipping portion  240   d  has a trend to be clipped in the clipping port of the surgical instrument. That is to say, other elastomers are not extra disposed to provide the elastic force for the clipping portion  240   d,  so that the structure is simpler. 
     In this implementation, the near end of the clipping portion  240   d  is connected to the mounting portion  220   d  of the separation member  200   d.  The clipping portion  240   d  is deformed. The far end of the clipping portion  240   d  rotates around the near end, so that the clipping portion  240   d  is clipped in the clipping port or detached from the clipping port, and finally, the separation member  200   d  is switched between the first state and the second state. It is to be noted that, extra rotating shaft is not disposed on the near end, and the far end rotates around the junction of the near end and the mounting portion  220   d.    
     Therefore, it may be seen that, the separation member  200   d  in this implementation is simpler in structure and lower in cost. 
       FIG.  23    to  FIG.  26    show the separation member cooperatively used with the surgical instrument provided in a sixth implementation of the disclosure. 
     A difference between the separation member  200   e  of this implementation and the separation member in the fifth implementation is mainly described below. 
     In the fifth implementation, the clipping portion is disposed on the front surface (second side surface) of the mounting portion of the separation member, and is mated with the clipping port disposed in the surgical instrument. 
     In this implementation, the clipping portion  240   e  is disposed on the back surface of the mounting portion  220   e  of the separation member  200   e.  The clipping port  60   e  is disposed on the back surface  32   e  of the staple abutting seat  30   e.  The clipping portion  240   e  disposed on the back surface of the mounting portion  220   e  is mated with the clipping port  60   e  disposed on the back surface  32   e  of the staple abutting seat  30   e.  Therefore, the separation member  200   e  can be detachably connected to the surgical instrument. 
     Since the clipping port  60   e  is disposed on the back surface  32   e  of the staple abutting seat  30   e,  the clipping port is not affected by the staple cartridge base. Therefore, the operating member of the packaging box may operate on the back surface  32   e  of the staple abutting seat  30   e,  so as to mount and dismount the separation member  200   e.  Therefore, the operating space is larger, and the operation is more convenient. 
     The far end of the clipping portion  240   e  is connected to the separation member  200   e  in the manner of welding. The clipping portion  240   e  itself has the elasticity, so that switching between the first state and the second state can be realized, and details are not described. 
       FIG.  27    to  FIG.  29    show the separation member cooperatively used with the surgical instrument provided in a seventh implementation of the disclosure. 
     A difference between the separation member  200   f  of this implementation and the separation member in the fifth implementation is mainly described below. 
     In the fifth implementation, the near end of the clipping portion is fixed to the mounting portion of the separation member, and the far end of the clipping portion is in mated connection with the clipping port of the surgical instrument. 
     In this implementation, the far end of the clipping portion  240   f  is fixed to the portion of the separation member  200   f  other than the clipping portion  240   f,  and the near end of the clipping portion  240   f  is in mated connection with the clipping port of the surgical instrument. 
     In this implementation, the separation member  200   f  is provided with an accommodation cavity  297   f.  The accommodation cavity  297   f  extends from the near end of the mounting portion in a direction toward the working portion. The accommodation cavity  297   f  is partially located in the working portion. A mounting shaft  296   f  vertically extending is disposed on the far end of the accommodation cavity  297   f.  The clipping portion  240   f  is provided with a mounting hole that can be sleeved on the mounting shaft  296   f.  The mounting hole is mated with the mounting shaft  296   f  to achieve the mated connection between the far end of the clipping portion  240   f  and the separation member  200   f.  The near end of the clipping portion  240   f  may rotate around the far end to achieve the clipping and detaching of the clipping port. 
     It is to be noted that, in this implementation, although the mounting shaft  296   f  is a cylindrical shaft and the mounting hole is a circular hole, the clipping portion  240   f  does not rotate around the axis of the mounting shaft  296   f.  The rotation axis of the clipping portion  240   f  is the same as that in the foregoing implementation. The rotation axis of the clipping portion  240   f  is parallel to a working surface of the separation member  200   f.    
     To sum up, in the disclosure, the doctor first uses the separation member to strip the target tissue from other tissue, and then moves the surgical instrument forward, to cause the target tissue to be between the staple cartridge base and the staple abutting seat, so as to operate the surgical instrument to cut and suture the target tissue. By using the separation member to strip the target tissue, the operation of the doctor can be easier and more convenient. In addition, by means of the clipping mechanism, the separation member is in elastically-mated connection with the surgical instrument, so that reliable connection and convenient dismounting can be realized. 
     In the disclosure, the elastomer abuts against the end surface of the mounting end, so that the end surface of the far end of the mounting end may be prevented from scratching the tissue to the greatest extend, and the risk that the tissue is sandwiched in the gap between the end surface of the far end of the mounting end and the separation member may be reduced to the greatest extend. 
     In the disclosure, the packaging box can not only provide packaging for the separation member, but also serve as a disassembling tool of the separation member relative to the surgical instrument, of which design is very artful. In the disclosure, the elastomer may not only prevent the tissue from being scratched, but also prevent the separation member from accidentally falling off when the separation member is accommodated in the packaging box. 
     It should be understood that, although this specification is described in terms of implementations, not every implementation only includes an independent technical solution, and this description in the specification is only for clarity. Those skilled in the art should take the description as a whole, and the technical solutions in each implementation may also be appropriately combined to form other implementations that can be understood by those skilled in the art. 
     The series of detailed descriptions listed above are merely specific descriptions for the feasible implementations of the disclosure, which are not used to limit the protection scope of the disclosure. All equivalent implementations or modifications made without departing from the technical spirit of the disclosure shall be included within the protection scope of the disclosure.