CN111150443A

CN111150443A - Endoscope surgical anastomat capable of being forcibly reset

Info

Publication number: CN111150443A
Application number: CN201811327834.8A
Authority: CN
Inventors: 张奕奕; 张祖仁; 徐维华
Original assignee: Shanghai Boqia Medical Devices Co ltd
Current assignee: Shanghai Boqia Medical Devices Co ltd
Priority date: 2018-11-08
Filing date: 2018-11-08
Publication date: 2020-05-15

Abstract

The endoscope surgical anastomat capable of being forcibly reset has the technical characteristics that a gear is installed on an anastomat body, a rack is arranged on a driving rod, and a spanner is arranged in an accessory configured on the endoscope surgical anastomat. When the nail bin assembly and the nail anvil assembly in the executing assembly are clamped, only one finger of a hand holding the anastomat body is needed to hook the groove of the anastomat body, and the wrench is inserted into the driving hole of the gear to rotate, so that the gear drives the rack to drive the driving rod to move back and forth in the anastomat body. The wrench has powerful amplification effect, so that the effects of conveniently controlling the nail bin assembly and the nail anvil assembly in the executing assembly to quit the actions of anastomosis and cutting and executing opening are achieved, the endoscopic surgical anastomat can be prevented from swinging, and the technical effect of avoiding misoperation of a firing handle can be further achieved.

Description

Endoscope surgical anastomat capable of being forcibly reset

Technical Field

The invention relates to an endoscopic surgical stapler used in endoscopic surgery, in particular to a laparoscopic surgical stapler capable of forced resetting, and also particularly relates to a thoracoscopic surgical stapler capable of forced resetting.

Background

In laparoscopic surgery and thoracoscopic surgery, various manual endoscopic surgery staplers and electric endoscopic surgery staplers are generally used for cutting and anastomosing operations of esophagus, stomach, duodenum, small intestine, colon, rectum, appendix, gallbladder, pancreas, spleen and the like in the digestive tract, for cutting and anastomosing operations of lung, trachea and the like in the respiratory tract, and for cutting and anastomosing operations of bladder, uterus and the like in the urogenital system, so that the surgical trauma can be reduced, the surgical time can be shortened, and the surgical quality can be improved. Various endoscopic surgical staplers may also be used in various open procedures.

The endoscopic surgical stapler described in US20100200639a1 includes an actuating assembly, an extension assembly and a manipulating assembly. The executing component is provided with a nail box component and a nail anvil component. The nail bin component and the nail anvil component are linear, and can be straight or bent. The operating component is provided with an opening and closing control mechanism and an anastomat body. The start-stop control mechanism is provided with a driving rod, a reset button and a firing handle. When the firing handle pivots on the anastomat body, the firing handle drives the driving rod to move forwards in the anastomat body, and the nail bin assembly and the nail anvil assembly in the execution assembly are controlled to execute closing, anastomosis and cutting actions. When the reset button moves backwards on the anastomat body, the reset button drives the driving rod to move backwards in the anastomat body, and the action of withdrawing from the anastomosis and cutting and the action of executing opening of the nail bin assembly and the nail anvil assembly in the executing assembly are controlled. The unsatisfying point of the endoscopic surgical anastomat with the style is that when the reset button moves backwards on the anastomat body to execute the opening action, two hands are required to alternately operate, and because the opening and closing actions of the nail bin assembly and the nail anvil assembly are required to be executed for many times in the laparoscopic surgery and the thoracoscopic surgery, a great deal of operation time is consumed, and the attention of an operator is also disturbed; when the reset button moves backwards on the anastomat body to withdraw from the actions of anastomosis and cutting and execute the opening action, the trigger handle needs to be stabilized by fingers, so that the endoscopic surgical anastomat does not shake, and at the moment, once the trigger handle is rotated, the operation assembly can perform misoperation. Another dissatisfaction of the endoscopic surgical stapler of this type is that when the nail cartridge assembly and the nail anvil assembly in the executing assembly are stuck, since the reset button has no force amplification, the reset button is difficult to drive the driving rod to move backward in the stapler body, so that it is difficult to control the actions of withdrawing from the stapling and cutting and the actions of executing opening of the nail cartridge assembly and the nail anvil assembly in the executing assembly, thereby causing operation failure. Therefore, the opening and closing control mechanism of the endoscopic surgical anastomat needs to be improved.

The operating assembly of the endoscopic surgical stapler described in US20100133318a1 includes a gear train, cam mechanism, escapement mechanism, ratchet mechanism, lever mechanism, switching mechanism and safety mechanism, so that the firing handle can move the drive rod back and forth within the stapler body. When the firing handle drives the driving rod to move forwards in the anastomat body, the nail bin assembly and the nail anvil assembly in the execution assembly are controlled to execute closing, anastomosis and cutting actions. When the firing handle drives the driving rod to move backwards in the anastomat body, the nail bin assembly and the nail anvil assembly in the execution assembly are controlled to exit the actions of anastomosis and cutting and execute the action of opening. A first dissatisfaction with endoscopic surgical staplers of this type is the complexity of the structure of the operating assembly, the increase in volume and weight and the high costs. The second dissatisfaction of the endoscopic surgical stapler of this type is that, in normal use, the resistance of the action of controlling the ejection, anastomosis and cutting, and the action of executing opening of the nail cartridge assembly and the nail anvil assembly in the executing assembly is small, and the action of controlling the ejection, anastomosis and cutting, and the action of executing opening of the nail cartridge assembly and the nail anvil assembly in the executing assembly can be completed only by pulling back the reset button of the endoscopic surgical stapler introduced in US20100200639a1 quickly; however, the firing handle of the endoscopic surgical stapler disclosed in US20100133318a1 drives the driving rod to move backward in the stapler body, so that it takes a long time to complete the actions of controlling the staple cartridge assembly and the staple anvil assembly in the executing assembly to exit from the stapling and cutting and the action of executing the opening. A third dissatisfaction with laparoscopic surgical staplers of this type is that the abnormal situation of jamming of the cartridge assembly and of the anvil assembly of the actuation assembly occurs on average more than 100 uses, and therefore the effective use of the structurally complex operating assembly of the laparoscopic surgical stapler described in US20100133318a1 is too inefficient. Therefore, the opening and closing control mechanism of the endoscopic surgical anastomat needs to be improved.

It is evident from the above that there is a need for further improvements to endoscopic surgical staplers, which are used in large numbers in the world each year, making them more convenient, safer, more labour-saving, more time-saving and less costly to use.

Disclosure of Invention

The invention aims to provide a forcedly-resettable endoscopic surgical anastomat, which has the technical characteristics that a gear is arranged on an anastomat body, a rack is arranged on a driving rod, and a spanner is arranged in an accessory arranged on the endoscopic surgical anastomat. When the nail bin assembly and the nail anvil assembly in the executing assembly are clamped, only one finger of a hand holding the anastomat body is needed to hook the groove of the anastomat body, and the wrench is inserted into the driving hole of the gear to rotate, so that the gear drives the rack to drive the driving rod to move back and forth in the anastomat body. The wrench has powerful amplification effect, so that the effects of conveniently controlling the nail bin assembly and the nail anvil assembly in the executing assembly to quit the actions of anastomosis and cutting and executing opening are achieved, the endoscopic surgical anastomat can be prevented from swinging, and the technical effect of avoiding misoperation of a firing handle can be further achieved. Because the wrench is not attached to the endoscopic surgical stapler during normal use, the wrench is taken out and inserted into the driving hole of the gear for use only when the nail bin assembly and the nail anvil assembly in the execution assembly are clamped, thereby achieving the technical effects of simple structure, small volume and weight and low cost of the operation assembly.

The second purpose of the invention is to provide a forcedly resettable endoscopic surgical anastomat, which realizes the technical characteristics that a shifting rod is arranged in an opening and closing control mechanism, and the front part of an anastomat body close to a firing handle is provided with a groove. The technical scheme is that when the opening and closing control mechanism controls the nail bin assembly and the nail anvil assembly in the execution assembly to execute the opening action, only one finger is needed to rotate the deflector rod, the other finger is used to hook the groove of the anastomat body, and the operation can be finished by adopting one hand; the technical scheme is that when the opening and closing control mechanism controls the nail bin assembly and the nail anvil assembly in the execution assembly to quit the actions of anastomosis and cutting, only one finger of a hand holding the anastomat body is needed to hook the groove of the anastomat body, and the reset button drives the driving rod to move backwards in the anastomat body. Thereby achieving the technical effects of preventing the endoscopic surgical stapler from swinging, avoiding the misoperation of a firing handle and shortening the operation time.

The task of the invention is realized by the following technical scheme:

the endoscopic surgical stapler of the present invention includes an actuation assembly, an extension assembly, and an operating assembly. The extension component connects the operation component and the execution component. A joint assembly may also be included in the endoscopic surgical stapler. The executing component is provided with a nail box component and a nail anvil component. The nail bin component and the nail anvil component are linear, and can be straight or bent. The operating component is provided with an opening and closing control mechanism and an anastomat body. The start-stop control mechanism is provided with a driving rod, a reset button and a firing handle.

When the firing handle pivots on the anastomat body, the firing handle drives the driving rod to move forwards in the anastomat body, and when the driving rod moves forwards, the driving rod controls the nail bin assembly and the nail anvil assembly in the execution assembly to execute closing, anastomosis and cutting actions.

When the reset button moves backwards on the anastomat body, the reset button drives the driving rod to move backwards in the anastomat body, and when the driving rod moves backwards, the nail bin assembly and the nail anvil assembly in the execution assembly are controlled to exit the actions of anastomosis and cutting and execute the action of opening.

A deflector rod is arranged in the opening and closing control mechanism. The shift lever can pivot at the rear part of the anastomat body. When the shifting lever pivots on the anastomat body, the shifting lever drives the driving rod to move backwards in the anastomat body, so that the nail bin assembly and the nail anvil assembly in the execution assembly are opened.

The shifting rod of the invention can be provided with a shifting fork. When the shifting lever pivots on the anastomat body, the shifting fork of the shifting lever drives the driving rod to move backwards in the anastomat body by shifting the reset button, so that the nail bin assembly and the nail anvil assembly of the execution assembly are opened. A tension spring can be arranged between the deflector rod and the anastomat body. When the shifting lever is released, the tension spring pulls the shifting lever to lean against the anastomat body so as to prevent the shifting lever from blocking the driving rod from moving back and forth in the anastomat body.

A recess may be provided in the front of the stapler body near the firing handle. When the start-stop control mechanism controls the driving rod to move backwards in the anastomat body, the groove of the anastomat body is hooked by the fingers, so that the endoscopic surgical anastomat can be prevented from swinging, and the trigger handle can be prevented from being operated by mistake.

The firing handle may have a pawl thereon. The driving rod can be provided with a ratchet strip and a lug. When the pawl on the firing handle pushes the bump on the driving rod, the firing handle drives the driving rod to move forwards in the anastomat body, and the nail bin assembly and the nail anvil assembly in the execution assembly are controlled to execute the closing action. When the pawl on the firing handle pushes the ratchet bar on the driving rod, the firing handle drives the driving rod to move forwards in the anastomat body, and the nail bin assembly and the nail anvil assembly in the execution assembly are controlled to execute the actions of anastomosis and cutting.

The operating assembly may have a switch knob, a switch block and a switch spring. The driving rod can be provided with a flashboard, a blocking groove and a return spring. The switching spring causes the switching piece to move in a direction toward the driving rod. The flashboard and the switching button can respectively drive the switching block to move towards the direction deviating from the driving rod.

When the reset button moves backwards, the reset button drives the flashboard to enable the switching block to move towards the direction deviating from the driving rod.

When the reset button is loosened, the reset button moves forwards under the action of the reset spring to drive the flashboard to be separated from the switching block, so that the switching block moves towards the direction of the driving rod under the action of the switching spring.

When the switching block is inserted into the blocking groove of the driving rod, the switching block blocks the driving rod to move back and forth in the anastomat body, and at the moment, the switching button is pressed down to drive the switching block to move towards the direction deviating from the driving rod.

When the switching block is inserted into the ratchet bar of the driving rod, the switching block prevents the driving rod from moving backwards in the anastomat body, and at the moment, the switching button is pressed down to drive the switching block to move towards the direction deviating from the driving rod.

When the switching block is separated from the blocking groove or the ratchet bar of the driving rod, the driving rod can move back and forth in the anastomat body.

The stapler body of the invention can be provided with a gear. The drive rod may have a rack thereon. The gear drives the rack to drive the driving rod to move back and forth in the anastomat body.

The rack on the driving rod can be connected with the reset button. When the rack on the driving rod drives the reset button to move back and forth in the anastomat body, the reset button drives the driving rod to move back and forth in the anastomat body.

There may be a drive hole in the gear. A wrench may be included in the attachment of the laparoscopic surgical stapler arrangement. When the spanner is inserted into the driving hole of the gear to rotate, the gear drives the rack to drive the driving rod to move back and forth in the anastomat body.

When the spanner is inserted into the driving hole of the gear to rotate, the groove of the anastomat body is hooked by the fingers, so that the endoscopic surgical anastomat can be prevented from swinging, and the trigger handle can be prevented from being operated by mistake.

Drawings

FIG. 1 is an external view of an actuating assembly of an endoscopic surgical stapler illustrating an embodiment of the present invention as it opens;

FIG. 2 is a front view showing FIG. 1 with the left housing removed;

FIG. 3 is an enlarged front view showing a portion of the operating assembly of FIG. 2;

FIG. 4 is an elevational view showing the actuator assembly of FIG. 1 with the left housing removed and closed;

FIG. 5 is an enlarged front elevational view showing a portion of the operating assembly of FIG. 4;

FIG. 6 is a front view showing the left housing removed with the actuator assembly being opened using the lever;

FIG. 7 is an enlarged front elevational view showing a portion of the operating assembly of FIG. 6;

FIG. 8 is an external view of FIG. 7;

FIG. 9 is an external view of the endoscopic surgical stapler illustrating the use of a forced reduction procedure;

FIG. 10 is a front view showing the left housing of FIG. 9 removed;

FIG. 11 is an enlarged front elevational view showing a portion of the operating assembly of FIG. 10;

FIG. 12 is an enlarged external view showing a part of the forced resetting operation part of FIG. 11;

FIG. 13 is an enlarged external view of the wrench of FIG. 9;

FIG. 14 is an enlarged bottom plan view showing the assembly of the drive rod, reset button, gate, return spring and rack;

FIG. 15 is a sectional view taken generally from 15 to 15 of FIG. 14;

FIG. 16 is a bottom plan view showing the reset button of FIG. 14 moved rearwardly;

fig. 17 is a sectional view taken from 17 to 17 in fig. 16.

Detailed description of the invention

The following description of a preferred embodiment of a forcibly resettable endoscopic surgical stapler of the present invention is given by way of example and with reference to the accompanying drawings. The scope of the invention is indicated in the claims. It is to be understood that some or all of the figures are diagrammatic illustrations for purposes of illustrating a preferred embodiment of the invention and do not depict the actual dimensions of the portions shown. The actual manner in which the above-recited and other objects and advantages of the invention are obtained will be more clearly understood by reference to the detailed description of the preferred embodiments. Reference is made to the U.S. patents cited in this specification for the construction, installation, use and operation of the various other components of an endoscopic surgical stapler.

In the drawings and the following description, the terms "proximal" and "posterior" refer to the position of the endoscopic surgical stapler near the operator, while the terms "distal" and "anterior" refer to the position of the endoscopic surgical stapler away from the operator. The term "left" refers to the left side of an endoscopic surgical stapler operator, while the term "right" refers to the right side of an endoscopic surgical stapler operator. Other directional terminology may be understood from the accompanying drawings and the description below.

In order to highlight the drawing and the description of the endoscopic surgical stapler with positive reset according to the present invention, the other components are not described in detail in the attached drawings. Reference is made to the U.S. patents cited in this specification for the construction, installation, use and operation of the various other components of an endoscopic surgical stapler.

The components of the forcibly resettable endoscopic surgical stapler of the embodiments of the present invention will now be described with reference to figures 1-17, and specific embodiments of the components will be described.

As shown in fig. 1-3, laparoscopic surgical stapler 1 includes an implement assembly 2, an extension assembly 3, and a manipulation assembly 4. The extension assembly 3 connects the operation assembly 4 and the execution assembly 2. The executing component 2 is provided with a cartridge component 5 and an anvil component 6. The operating component 4 is provided with an opening and closing control mechanism and an anastomat body 8. The start-stop control mechanism is provided with a driving rod 9, a reset button 11 and a firing handle 10.

As shown in FIGS. 4 and 5, when the firing handle 10 pivots on the stapler body 8, the firing handle 10 drives the driving rod 9 to move forward in the stapler body 8, and the driving rod 9 moves forward to control the cartridge module 5 and the anvil module 6 in the executing module 2 to perform closing, stapling and cutting actions.

As shown in fig. 4 and 5, fig. 10 and fig. 11, when the reset button 11 moves backward on the stapler body 8, the reset button 11 drives the driving rod 9 to move backward in the stapler body 8, and when the driving rod 9 moves backward, the cartridge module 5 and the anvil module 6 in the executing module 2 are controlled to exit the actions of stapling and cutting and the action of executing opening.

As shown in fig. 6 and 7, a shift lever 12 is provided in the opening and closing operation mechanism. The lever 12 is pivotable at the rear of the stapler body 8. When the shift lever 12 pivots on the stapler body 8, the shift lever 12 drives the driving rod 9 to move backwards in the stapler body 8, so that the space between the nail bin assembly 5 and the nail anvil assembly 6 in the executing assembly 2 is opened.

The shift lever 12 is provided with a shift fork 13 (see fig. 6 to 8). When the shift lever 12 pivots on the stapler body 8, the shift fork 13 of the shift lever 12 drives the driving rod 9 to move backwards in the stapler body 8 by shifting the reset button 11, so that the space between the nail bin assembly 5 and the nail anvil assembly 6 of the executing assembly 2 is opened. A tension spring 14 is arranged between the shift lever 12 and the anastomat body 8 (see fig. 2 to 5). When lever 12 is released, tension spring 14 pulls lever 12 against stapler body 8 to prevent lever 12 from obstructing the forward and backward movement of drive rod 9 within stapler body 8.

As shown in fig. 6, 9 and 10, a recess 15 is provided in the front of the stapler body 8 near the firing handle 10. When the start-stop control mechanism controls the driving rod 9 to move backwards in the anastomat body 8, the groove 15 of the anastomat body 8 is hooked by fingers, so that the endoscopic surgical anastomat 1 can be prevented from swinging, and the trigger handle 10 can be prevented from being operated by mistake.

A pawl 16 (see FIGS. 3, 5 and 7) is provided on the firing handle 10. The driving rod 9 is provided with a ratchet 17 and a projection 18 (see fig. 13 to 17). When the pawl 16 of the firing handle 10 pushes the projection 18 of the driving rod 9, the firing handle 10 drives the driving rod 9 to move forward in the stapler body 8, so as to control the staple cartridge assembly 5 and the anvil assembly 6 of the executing assembly 2 to execute a closing action. When the pawl 16 of the firing handle 10 pushes the ratchet 17 of the driving rod 9, the firing handle 10 drives the driving rod 9 to move forward in the stapler body 8, and controls the staple cartridge assembly 5 and the staple anvil assembly 6 of the executing assembly 2 to execute the anastomosis and cutting actions.

In the operating assembly 4 are a switch knob 19, a switch block 20 and a switch spring 21 (see fig. 3, 5 and 7). The drive rod 9 is provided with a shutter 22, a catch groove 23, and a return spring 24 (see fig. 12 to 17). The switching spring 21 causes the switching piece 20 to move in a direction towards the driving rod 9. The shutter 22 and the switch knob 19 can respectively drive the switch block 20 to move in a direction deviating from the driving rod 9. When the reset button 11 moves backward, the reset button 11 moves the shutter 22 so that the switch block 20 moves in a direction away from the drive lever 9. When the reset button 11 is released, the reset button 11 moves forward under the action of the reset spring 24, bringing the shutter 22 out of the switching block 20, so that the switching block 20 moves toward the drive lever 9 under the action of the switching spring 21.

When the switch block 20 is inserted into the blocking slot 23 of the driving rod 9 (see fig. 5), the switch block 20 blocks the driving rod 9 from moving back and forth in the stapler body 8, and at this time, the switch button 19 is pressed to move the switch block 20 in a direction deviating from the driving rod 9.

When the switch block 20 is inserted into the ratchet 17 of the driving rod 9 (see fig. 11), the switch block 20 prevents the driving rod 9 from moving backwards in the stapler body 8, and at this time, pressing the switch button 19 moves the switch block 20 in a direction deviating from the driving rod 9.

When the switch block 20 is disengaged from the catch 23 or the ratchet 17 of the driving rod 9, the driving rod 9 can move back and forth within the stapler body 8.

As shown in fig. 10 to 12, the stapler body 8 is mounted with a gear 25. The driving rod 9 is provided with a rack 26. The gear 25 drives the rack 26 to move the driving rod 9 back and forth in the stapler body 8.

As shown in fig. 14 to 17, the rack 26 on the drive lever 9 is connected to the reset button 11. When the rack 26 on the driving rod 9 drives the reset button 11 to move back and forth in the stapler body 8, the reset button 11 drives the driving rod 9 to move back and forth in the stapler body 8.

As shown in fig. 9 to 13, the gear 25 has a driving hole 27 therein. Among the accessories provided with the endoscopic surgical stapler 1 is a wrench 28. When the wrench 28 is inserted into the driving hole 27 of the gear 25 and rotated, the gear 25 drives the rack 26 to move the driving rod 9 back and forth in the stapler body 8.

When the wrench 28 is inserted into the driving hole 27 of the gear 25 to rotate, the fingers hook the groove 15 of the anastomat body 8, so that the endoscopic surgical anastomat 1 can be prevented from swinging, and the firing handle 10 can be prevented from being operated by mistake.

According to the detailed description, the forcedly-resettable endoscopic surgical stapler of the invention has the following technical effects:

the endoscope surgical anastomat capable of being forcibly reset has the technical characteristics that the anastomat body is provided with the gear, the driving rod is provided with the rack, and the accessory configured on the endoscope surgical anastomat is provided with the wrench. When the nail bin assembly and the nail anvil assembly in the executing assembly are clamped, only one finger of a hand holding the anastomat body is needed to hook the groove of the anastomat body, and the wrench is inserted into the driving hole of the gear to rotate, so that the gear drives the rack to drive the driving rod to move back and forth in the anastomat body. The wrench has powerful amplification effect, so that the effects of conveniently controlling the nail bin assembly and the nail anvil assembly in the executing assembly to quit the actions of anastomosis and cutting and executing opening are achieved, the endoscopic surgical anastomat can be prevented from swinging, and the technical effect of avoiding misoperation of a firing handle can be further achieved. Because the wrench is not attached to the endoscopic surgical stapler during normal use, the wrench is taken out and inserted into the driving hole of the gear for use only when the nail bin assembly and the nail anvil assembly in the execution assembly are clamped, thereby achieving the technical effects of simple structure, small volume and weight and low cost of the operation assembly.

The endoscope surgical anastomat capable of being forcibly reset has the technical characteristics that a deflector rod is arranged in an opening and closing control mechanism, and a groove is formed in the front part of an anastomat body close to a firing handle. The technical scheme is that when the opening and closing control mechanism controls the nail bin assembly and the nail anvil assembly in the execution assembly to execute the opening action, only one finger is needed to rotate the deflector rod, the other finger is used to hook the groove of the anastomat body, and the operation can be finished by adopting one hand; the technical scheme is that when the opening and closing control mechanism controls the nail bin assembly and the nail anvil assembly in the execution assembly to quit the actions of anastomosis and cutting, only one finger of a hand holding the anastomat body is needed to hook the groove of the anastomat body, and the reset button drives the driving rod to move backwards in the anastomat body. Thereby achieving the technical effects of preventing the endoscopic surgical stapler from swinging, avoiding the misoperation of a firing handle and shortening the operation time.

It will thus be seen that the objects set forth above, including those made apparent from the preceding description, are efficiently attained. While only the exemplary preferred embodiment of the present invention has been described herein, certain changes may be made in the above constructions without departing from the spirit and scope of the invention. The invention is not limited or restricted to the specific details set forth herein but is intended to cover any modifications or adaptations apparent to those of ordinary skill in the art.

Claims

1. A forcedly resettable endoscopic surgical stapler comprises an executing component, an extending component and an operating component, wherein the extending component is connected with the operating component and the executing component, a nail bin component and a nail anvil component are arranged in the executing component, an opening and closing operating mechanism and a stapler body are arranged in the operating component, and a driving rod, a resetting button and a firing handle are arranged in the opening and closing operating mechanism;

when the firing handle pivots on the anastomat body, the firing handle drives the driving rod to move forwards in the anastomat body, and when the driving rod moves forwards, the nail bin assembly and the nail anvil assembly in the execution assembly are controlled to execute closing, anastomosis and cutting actions;

when the reset button moves backwards on the anastomat body, the reset button drives the driving rod to move backwards in the anastomat body, and when the driving rod moves backwards, the nail bin assembly and the nail anvil assembly in the execution assembly are controlled to exit the actions of anastomosis and cutting and execute the action of opening;

the method is characterized in that: the anastomat body is provided with a gear, the driving rod is provided with a rack, and the gear drives the rack to drive the driving rod to move back and forth in the anastomat body.

2. The forcibly resettable endoscopic surgical stapler of claim 1, wherein a rack on the drive rod is connected to the reset button; when the rack on the driving rod drives the reset button to move back and forth in the anastomat body, the reset button drives the driving rod to move back and forth in the anastomat body.

3. The forcibly resettable endoscopic surgical stapler of claim 1, wherein said gear has a drive hole therein and said endoscopic surgical stapler is provided with an attachment having a wrench therein; when the wrench is inserted into the driving hole of the gear to rotate, the gear drives the rack to drive the driving rod to move back and forth in the anastomat body.

4. The forcibly resettable endoscopic surgical stapler of claim 3, wherein a recess is provided in the front of the stapler body near the firing handle; when the wrench is inserted into the driving hole of the gear to rotate, the groove of the anastomat body is hooked by fingers, so that the endoscopic surgical anastomat can be prevented from swinging, and the trigger handle can be prevented from being operated by mistake.

5. The forcibly resettable endoscopic surgical stapler of claim 1, wherein said firing handle comprises a pawl, said drive shaft comprises a ratchet bar and a tab;

when the pawl on the firing handle pushes the bump on the driving rod, the firing handle drives the driving rod to move forwards in the anastomat body, and the nail bin assembly and the nail anvil assembly in the execution assembly are controlled to execute closing action;

when the pawl on the firing handle pushes the ratchet strip on the driving rod, the firing handle drives the driving rod to move forwards in the anastomat body, and the nail bin assembly and the nail anvil assembly in the execution assembly are controlled to execute the actions of anastomosis and cutting.

6. The forcibly resettable endoscopic surgical stapler of claim 5, wherein the operating assembly comprises a switch knob, a switch block and a switch spring, the drive shaft comprises a shutter, a slot and a return spring, the switch spring moves the switch block towards the drive shaft, and the shutter and the switch knob respectively move the switch block away from the drive shaft;

when the reset button moves backwards, the reset button drives the flashboard to enable the switching block to move towards the direction deviating from the driving rod;

when the reset button is loosened, the reset button moves forwards under the action of the reset spring to drive the flashboard to be separated from the switching block, so that the switching block moves towards the direction of the driving rod under the action of the switching spring;

when the switching block is inserted into the blocking groove of the driving rod, the switching block blocks the driving rod to move back and forth in the anastomat body, and at the moment, the switching button is pressed down to drive the switching block to move towards the direction deviating from the driving rod;

when the switching block is inserted into the ratchet bar of the driving rod, the switching block prevents the driving rod from moving backwards in the anastomat body, and at the moment, the switching button is pressed down to drive the switching block to move towards the direction deviating from the driving rod;

7. The forcibly resettable endoscopic surgical stapler of claim 1, wherein a lever is provided in said opening and closing mechanism, said lever being pivotable at the rear of said stapler body; when the shifting lever pivots on the anastomat body, the shifting lever drives the driving rod to move backwards in the anastomat body, so that the nail bin assembly and the nail anvil assembly in the executing assembly are opened.

8. The forcibly resettable endoscopic surgical stapler of claim 7, wherein said shifter is provided with a shifter fork; when the shifting lever pivots on the anastomat body, the shifting fork of the shifting lever drives the driving rod to move backwards in the anastomat body by shifting the reset button, so that the nail bin assembly and the nail anvil assembly of the execution assembly are opened.

9. The forcibly resettable endoscopic surgical stapler of claim 7, wherein a tension spring is disposed between the lever and the stapler body; when the shifting lever is released, the tension spring pulls the shifting lever to lean against the anastomat body so as to prevent the shifting lever from hindering the driving rod from moving back and forth in the anastomat body.

10. The forcibly resettable endoscopic surgical stapler of claim 7, wherein a recess is provided in the front of the stapler body near the firing handle; when the opening and closing control mechanism controls the driving rod to move backwards in the anastomat body, the groove of the anastomat body is hooked by fingers, so that the endoscopic surgical anastomat can be prevented from swinging, and a trigger handle can be prevented from being operated by mistake.