CN220530061U

CN220530061U - Electric endoscope anastomat

Info

Publication number: CN220530061U
Application number: CN202321029118.8U
Authority: CN
Inventors: 周巳骏; 黄昊翔
Original assignee: Changzhou Ke Feng Medical Technology Co ltd
Current assignee: Changzhou Ke Feng Medical Technology Co ltd
Priority date: 2023-04-28
Filing date: 2023-04-28
Publication date: 2024-02-27
Anticipated expiration: 2033-04-28

Abstract

The utility model discloses an electric endoscopic stapler. The firing assembly comprises a variable frequency motor, a rack, a firing gear, a firing switch button and a cutter bar; the middle of the top end of the variable frequency motor is provided with a driving gear, a step of the variable frequency motor, which is close to one side of the bending assembly, is provided with a firing gear, the firing gear is in transmission connection with a rack, and the end part of the driving end of the rack is detachably connected with a cutter bar; by adopting the variable frequency motor, the motor can run at a reduced speed when started, so that tissue fluid at the nail bin seat can be fully squeezed, the tissue fluid can be fully squeezed, the healing of a later-stage wound is facilitated, and the later-stage wound healing effect is better.

Description

Electric endoscope anastomat

Technical Field

The utility model relates to the field of anastomat, in particular to an electric endoscope anastomat.

Background

In the existing open or endoscopic surgery, a doctor uses an electric endoscopic stapler to realize the suturing and cutting functions of the stapler under electric control through the combination of a direct current motor, a circuit board and a mechanical transmission device;

the existing electric endoscope anastomat has the problems that the reaction time is difficult for doctors because the retracting speed of the electric endoscope anastomat can not be controlled after the suturing and cutting movement is finished, and the doctors can not accurately judge the quality of the push nails due to the too high push nails, so that the wound suturing effect is poor easily; in addition, the too high nail pushing speed easily causes insufficient tissue fluid squeezing, and the subsequent wound healing effect is affected.

Disclosure of Invention

In view of the above problems, an object of the present utility model is to provide an electric endoscopic stapler that provides a good wound healing effect.

The technical scheme for realizing the utility model is as follows

The electric endoscopic stapler comprises a stapler shell, a fixed bracket, a firing assembly, a bending assembly, a resetting assembly, a forced resetting assembly and a nail bin assembly; the anastomat shell comprises a handle cavity formed by a handle left cavity and a handle right cavity, and the firing assembly, the fixed support and the resetting assembly are integrated in the handle cavity; the firing assembly comprises a variable frequency motor, a rack, a firing gear, a firing switch button and a cutter bar; the driving gear is arranged in the center of the top end of the variable frequency motor, the firing gear is arranged on the step of one side of the variable frequency motor, which is close to the bending assembly, the firing gear is connected with the rack in a transmission way, and the end part of the driving end of the rack is detachably connected with the cutter bar.

The reset component comprises a reset handle structure and a closed handle structure; the reset handle structure comprises a reset handle, a reset handle spring, a reset handle backseat and a reset handle backseat spring; the tail end of the fixed bracket is L-shaped, and the reset handle is erected on a cross beam at the tail end of the fixed bracket; the reset handle consists of a mounting part and toggle buttons at two sides of the mounting part, and a flange at one side of the mounting part of the reset handle is clamped into a clamping groove between two lug seats at the tail end of the fixed support; one end of the reset handle spring is sleeved on the support rod connected with the two flanges, and the other end of the reset handle spring is erected on the circuit board; the spring of the reset handle rear seat is sleeved on a spring column of the reset handle rear seat, and the reset handle rear seat is arranged at the tail end of the fixed support behind the reset handle through a pin shaft.

The cutter bar is sleeved with a fixing rod, one end of the fixing rod is arranged in the anastomat shell, and the other end of the fixing rod is movably connected with the nail bin assembly through the steering joint assembly.

The closing handle structure comprises a firing connecting block, a closing handle, a sleeve and a first connecting rod; the first connecting rod consists of an arc-shaped rod above and a mounting frame arranged at one end of the arc-shaped rod, a raised arc-shaped lug is arranged at the other end of the arc-shaped rod, and the arc-shaped lug is contacted with a flange at the other side of the mounting part of the reset handle; the top end of the closing handle is hinged on the fixed support together with the bottom of the mounting frame, and the connecting end of the arc-shaped rod and the mounting frame is inserted into a U-shaped groove at the tail end of the firing connecting block and is rotationally connected with the firing connecting block through a rotating shaft; the sleeve is sleeved outside the fixed rod, and the head end of the firing connecting block is connected with a firing limiting block at the tail end of the sleeve.

The rotary shaft extends out of one end of the firing connecting block and is provided with a firing handle, a firing handle spring is sleeved on the rotary shaft outside the firing handle, and the other end of the firing handle spring is sleeved on a protruding part of the fixing support on the same side.

And a sleeve reset spring is arranged on a sleeve on one side of the firing limiting block, which is far away from the firing connecting block.

The forced resetting assembly comprises a manual resetting cover, a forced resetting button, a forced resetting firing block and a forced resetting card; the forced reset button consists of a mounting disc part and a pressing rod part, and the forced reset firing block and the forced reset card are respectively assembled on two sides of the mounting disc part and are matched with the mounting disc part to be mounted in an ear seat groove formed by two ear seats at the rear end of the fixed support.

The bending assembly comprises a bending handle cover, a bending handle and a bending gear; the bending handle cover consists of a first bending handle cover and a second bending handle cover; a groove matched with the bending handle is formed above the bending gear, and a gear part below the bending gear is arranged in the mounting hole of the first bending handle cover; the bending transmission gear set comprises a first bending transmission gear and a second bending transmission gear which are oppositely arranged in a chute of a cavity of the first bending handle cover, a plurality of transmission teeth are uniformly distributed on opposite surfaces of the first bending transmission gear and the second bending transmission gear, a chute matched with a sliding block in the first bending handle cover is arranged on the side surface of the first bending transmission gear and the side surface of the second bending transmission gear, and the chute corresponds to the sliding block one by one; the first bending transmission gear and the second bending transmission gear extend into the notch of the fixed rod and are positioned in the notch, the first bending transmission gear and the second bending transmission gear are respectively provided with a containing groove, and the containing grooves are assembled with the corresponding steering drag hooks arranged in the fixed rod.

The steering joint assembly comprises a steering joint, a connector, a connecting plate, a steering joint fixing block, a steering pin block, a connecting pipe and a steering pin block spring; the steering joint fixing block is arranged on the plane at the other end of the fixing rod; a mounting cavity is formed between the connector and the steering connector fixing block, a steering pin block spring is arranged in a spring groove of the mounting cavity, the extending end of the steering pin block spring is contacted with one end of the steering pin block, and the other end of the steering pin block is contacted with the steering connector; a steering shifting block is also arranged between the steering joint and the steering joint fixing block; one end of the connecting pipe is rotatably arranged on the platform on the top surface of the connector through the connecting plate, and the other end of the connecting pipe is clamped with the nail bin assembly.

The nail bin assembly consists of a nail supporting seat and a nail bin seat, and the cutting knife is arranged in a knife groove of the nail bin seat and can reciprocate back and forth along the knife groove; the mounting end of the cutting knife extends out of the nail bin assembly and into the fixing rod to be connected with the driving end of the knife carrying rod.

By adopting the technical scheme, the variable frequency motor is adopted, the speed of the nail pushing is reduced by changing the speed of the motor, so that the speed of feeding and retracting the cutter can be controlled, the reaction time of doctors can be ensured, and the quality of nail forming can be accurately judged, so that the smoothness of operation can be ensured; and the variable frequency motor is adopted, so that the tissue fluid at the nail bin seat can be fully squeezed during the decelerating operation of the motor, the tissue fluid can be fully squeezed, the healing of the later-stage wound is facilitated, and the later-stage wound healing effect is better.

Drawings

FIG. 1 is a schematic view of an initial state structure of the present utility model;

FIG. 2 is a schematic diagram of a reset assembly according to the present utility model;

FIG. 3 is a schematic view of the initial state structure of the present utility model;

FIG. 4 is a schematic view showing the structure of the end state of the push pin according to the present utility model;

FIG. 5 is a schematic view of a slot structure according to the present utility model;

FIG. 6 is a schematic view of the steering retractor of the present utility model;

in the drawing, 1 is a handle left cavity, 2 is a handle right cavity, 4 is a first bending handle cover, 5 is a second bending handle cover, 6 is a bending handle, 7 is a bending gear, 8 is a first bending transmission gear, 9 is a second bending transmission gear, 11 is a variable frequency motor, 15 is a reset handle, 17 is a reset handle spring, 18 is a fixed support, 19 is a fixed support cover, 20 is a firing limit block, 21 is a limit block, 23 is a closing handle, 24 is a firing connecting block, 25 is a firing handle, 26 is a safety switch, 33 is a reset handle back seat, 35 is a rack, 36 is a firing gear, 39 is a firing gear spring, 40 is a reset handle toggle switch, 42 is a firing switch button, 43 is a reset handle backseat spring, 44 is a firing handle spring, 46 is a sleeve, 47 is a fixed rod, 48 is a cutter bar, 49 is a steering drag hook, 51 is a cutter blade press block, 52 is a connector, 53 is a steering connector fixed block, 54 is a steering pin block, 55 is a steering pin block spring, 57 is a steering connector, 58 is a steering shifting block, 59 is a connecting pipe, 60 is a reset spring, 62 is a connecting plate, 63 is a locking ring, 64 is a cutting knife, 65 is a nail propping seat, 66 is a nail cartridge seat, 68 is a joint head protecting sleeve, 69 is a notch, 70 is a cylindrical head, 71 is an upper and lower reset spring, and 72 is a gear part.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. All other embodiments, which can be made by a person skilled in the art without creative efforts, based on the described embodiments of the present utility model fall within the protection scope of the present utility model.

Referring to fig. 1, there is shown a schematic view of the present application, an electric endoscopic stapler, comprising a stapler housing, a fixed support 18, a firing assembly, a deflection assembly, a reset assembly, a forced reset assembly, and a cartridge assembly; the anastomat shell comprises a handle cavity formed by a handle left cavity 1 and a handle right cavity 2, the firing assembly, the fixing support and the resetting assembly are integrated in the handle cavity, and a fixing support cover 19 is covered on the fixing support; the firing assembly comprises a variable frequency motor 11, a rack 35, a firing gear 36, a firing gear spring 39, a firing switch button, a firing handle spring 44 and a band cutter bar 48; the middle of the top end of the variable frequency motor is provided with a driving gear, a step on one side of the variable frequency motor, which is close to the bending assembly, is provided with a firing gear, the firing gear is in transmission connection with a rack, and the end part of the driving end of the rack is detachably connected (clamped) with a cutter bar; pressing the firing handle 25, the firing handle 25 drives the firing switch button 42 to dial up the micro switch on the driving plate, so that the motor starts to work, the driver starts to drive the driving gear to rotate, and the driving gear is meshed with the firing gear and is in transmission connection with the rack, so that the rotation of the driving gear indirectly drives the rack to do back-and-forth reciprocating motion; the rack reciprocates back and forth to drive the cutter bar to reciprocate back and forth; due to the adoption of the variable frequency motor, the speed reduction operation can be realized in the nail pushing movement, so that the tissue clamping is more stable, the nail forming is better realized, and the smooth operation is facilitated.

The reset component comprises a reset handle structure and a closed handle structure; the reset handle structure comprises a reset handle 15, a reset handle spring 17, a reset handle back seat 33 and a reset handle back seat spring 43; the tail end of the fixed bracket is L-shaped, and the reset handle is erected on a cross beam at the tail end of the fixed bracket; the reset handle consists of a mounting part and toggle buttons at two sides of the mounting part, and a flange at one side of the mounting part of the reset handle is clamped into a clamping groove between two lug seats at the tail end of the fixed support; one end of the reset handle spring is sleeved on the support rod connected with the two flanges, and the other end of the reset handle spring 17 is sleeved on the forced reset firing block 30; the spring of the reset handle rear seat is sleeved on a spring column of the reset handle rear seat, and the reset handle rear seat is arranged at the tail end of the fixed support behind the reset handle through a pin shaft. After the installation is completed, the toggle buttons on the two sides of the reset handle are exposed, when in use, the toggle buttons are pressed, the flange on the other side of the reset handle is pushed to enable the arc-shaped rod of the closing handle 23 to spring open and move backwards, and the nail propping seat assembly and the nail bin assembly are separated to realize resetting; meanwhile, the reset handle toggle switch is driven by pressing the toggle button, and the reset handle toggle switch is transmitted to the corresponding micro switch on the driving plate, so that the instrument is powered off. (the main movement of the back seat spring of the reset handle in the reset process)

The cutter bar is sleeved with a fixing rod 47, one end of the fixing rod is arranged in the anastomat shell, and the other end of the fixing rod is movably connected with the nail bin assembly through the steering joint assembly. The bottom surface of the fixed rod is provided with a slot which is matched with the pressing block 51 with the blade, and the pressing block with the blade presses the cutting knife component in the fixed rod to prevent the cutting knife component from deviating.

The closure handle structure includes a firing connection block, a closure handle, a sleeve 46, and a first linkage; the first connecting rod consists of an arc-shaped rod above and a mounting frame arranged at one end of the arc-shaped rod, a raised arc-shaped lug is arranged at the other end of the arc-shaped rod, and the arc-shaped lug is contacted with a flange at the other side of the mounting part of the reset handle; the top end of the closing handle is hinged on the fixed bracket together with the bottom of the mounting frame, and the connecting end of the arc-shaped rod and the mounting frame is inserted into a U-shaped groove at the tail end of the firing connecting block 24 and is rotationally connected with the firing connecting block 24 through a bolt; the sleeve is sleeved outside the fixed rod, the head end of the firing connecting block is connected with a firing limiting block 20 at the tail end of the sleeve, a limiting block 21 is arranged in a notch formed between the sleeve and the firing limiting block, and the limiting block is clamped in the notch to realize the combination of the sleeve and the firing limiting block. Pressing the closing handle, and as the closing handle rotates to drive the rotating shaft at the hinged part to rotate, the rotating shaft rotates to drive the mounting frame to rotate, the arc-shaped rod and the firing connecting block are driven to move forwards by the rotation of the mounting frame, at the moment, the arc-shaped protruding block of the arc-shaped rod is separated from the flange of the reset handle, the connection between the firing connecting block and the firing limiting block drives the sleeve clamped in the firing limiting block, and the sleeve moves forwards integrally (moves towards the direction close to the nail propping seat) along with the pressing of the closing handle, so that the nail propping seat welding assembly slowly pulls back into the sleeve, and a closing effect is achieved; when the closing handle is in a non-closing position, the flange of the reset handle clamps the highest part of the arc-shaped protruding block, so that the limiting effect is achieved; when the closing handle is in the closing position and needs to be reset, the flange on the resetting handle moves forwards to touch the arc-shaped flange by stirring the resetting handle, so that the arc-shaped flange is reset. (pressing the closure handle 23 tightens the return spring 60 to drive the firing link)

The joint block 24 and the firing limiting block 20 are linked to enable the sleeve 46 to integrally move backwards, and the nail seat abutting welding assembly 65 is slowly pulled back into the sleeve 46, so that a closing effect is achieved.

The rotary shaft extends out of one end of the firing connecting block and is provided with a firing handle, a firing handle spring is sleeved on the rotary shaft outside the firing handle, and the other end of the firing handle spring is sleeved on a protruding part of the fixing support on the same side. After the firing handle 25 is pressed, the micro switch on the dial-up driving plate drives the firing switch button 42 to drive the variable frequency motor 11 to work, so that the firing gear 36 and the rack 35 do meshing motion, and then the cutter bar 48 with the groove clamped in at the front end of the rack 35 and the cutter welding assembly 64 are driven to work in the cutter groove between the nail bin seat 66 and the nail abutting seat welding assembly 65.

A sleeve reset spring 60 is arranged on a sleeve on one side of the firing limiting block, which is far away from the firing connecting block. And when the closing handle is reset, the reset spring accelerates the reset.

The center of the mounting frame is also provided with a safety switch 26 which is U-shaped; the ends of the two side arms of the safety switch are respectively provided with a safety switch clamping block, and the mounting frame is provided with a clamping groove group matched with the safety switch clamping blocks; the clamping groove group comprises two clamping grooves which are arranged in tandem. The safety switch prevents the misoperation from pressing the firing handle. The safety switch is pressed down, then the firing handle driving motor is pressed down to drive the firing gear to carry out meshing transmission with the rack, and the rack pushes the cutter bar of the belt and the cutter welding component to carry out anastomosis and cutting movement in the cutter groove of the nail bin seat through the firing connecting block.

The forced resetting assembly comprises a manual resetting cover, a forced resetting button, a forced resetting firing block and a forced resetting card; the forced reset button consists of a mounting disc part and a pressing rod part, and the forced reset firing block and the forced reset card are respectively assembled on two sides of the mounting disc part and are matched with the mounting disc part to be mounted in an ear seat groove formed by two ear seats at the rear end of the fixed support. When the forced reset is needed, the forced reset button is pressed. After the forced reset button is pulled upwards, the forced reset card moves to draw the rack backwards (the lower convex head of the forced reset card is matched with the clamping groove on the upper side of the rack), and the rack moves to a toothless position so that the rack is locked and cannot move.

The bending assembly comprises a bending handle cover, a bending handle 6 and a bending gear 7; the bending handle cover consists of a first bending handle cover positioned above the cutter bar and a second bending handle cover 5 positioned below the cutter bar (as shown in figure 1); a groove matched with the bending handle is formed above the bending gear, a gear part below the bending gear is arranged in the mounting hole of the first bending handle cover, a cylindrical head is arranged on the contact surface of the gear part 72, which is contacted with the fixed rod, and the cylindrical head is inserted into the insertion hole of the fixed rod; the bending transmission gear set comprises a first bending transmission gear 8 and a second bending transmission gear 9 which are oppositely arranged in a chute of a cavity of the first bending handle cover, a plurality of transmission teeth are uniformly distributed on the opposite surfaces of the first bending transmission gear and the second bending transmission gear, the side surfaces of the first bending transmission gear and the second bending transmission gear are respectively provided with a chute matched with a slide block in the first bending handle cover 4, and the chutes are in one-to-one correspondence with the slide blocks; the first and second bending transmission gears extend into the notch of the fixed rod and are provided with accommodating grooves which are assembled with corresponding steering draw hooks 49 arranged in the fixed rod, and the first and second bending transmission gears are positioned in the notch 69. The bending handle is broken off, the lower bending gear is driven to rotate, the first bending transmission gear and the second bending transmission gear are meshed and transmitted around the middle bending gear, then the accommodating grooves below the first bending transmission gear and the second bending transmission gear are matched with the steering drag hooks arranged in the notches at the two sides of the fixed rod, and the steering drag hooks are pushed (pulled) in a moving way; the angle of the cartridge assembly is adjusted by the cooperation of the steering drag hook and the steering joint 57.

The cylinder head is sleeved with an upper and lower reset spring 71. A reset spring is sleeved on the column head below the gear part 72, and the reset spring is used for pressing the turning handle first before rotating, so that the turning gear moves downwards along with the reset spring to be clamped between the first turning transmission gear and the second turning transmission gear, and the reset spring can rotate only by pressing, thereby preventing misoperation.

The assembly includes a steering joint 57, a connector 52, a connecting plate 62, a steering joint fixing block 53, a steering pin block 54, a connecting pipe 59 and a steering pin block spring 55; the steering joint fixing block is arranged on the plane at the other end of the fixing rod; a mounting cavity is formed between the connector and the steering connector fixing block, a steering pin block spring is arranged in a spring groove of the mounting cavity, the extending end of the steering pin block spring is contacted with one end of the steering pin block, and the other end of the steering pin block is contacted with the steering connector; a steering shifting block 58 is also arranged between the steering joint and the steering joint fixing block; one end of the connecting pipe is rotatably arranged on the platform on the top surface of the connector through the connecting plate, and the other end of the connecting pipe is clamped with the nail bin assembly. The steering joint is meshed with the steering pin block, and the steering pin block plays a limiting role on the steering joint; when the angle of the steering joint is required to be adjusted, as the steering draw hooks on the two sides are connected with the steering shifting blocks, the steering shifting blocks are driven to rotate by the movement of the steering draw hooks, the steering joint is driven to rotate by the rotation of the steering shifting blocks, the steering pin block spring is forced to deform by the rotation of the steering joint to pull the steering pin block backwards, and then the steering shifting blocks on the front-end steering joint are driven to limit the steering pin block; the steering joint is connected with the nail bin seat through the nail bin seat pin, and the rotation of the steering joint enables the instrument to swing left and right.

A locking ring 63 is arranged in the groove in the center of the connecting pipe, the locking ring fixes the joint head protecting sleeve, and a joint head protecting sleeve 68 is sleeved outside the connecting pipe.

The nail bin assembly consists of a nail supporting seat 65 and a nail bin seat 66, and a cutting knife 64 is arranged in a knife groove of the nail bin seat and can reciprocate back and forth along the knife groove; the mounting end of the cutting knife extends out of the nail bin assembly and into the fixing rod to be connected with the driving end of the knife carrying rod.

The following describes the staple pushing process:

initial state: a nail bin assembly is arranged in the nail bin seat, and the nail abutting seat assembly and the nail bin assembly are in a separated state;

the state in the nail pushing: firstly, pulling a closing handle to close a nail supporting seat assembly and a nail bin assembly, then pulling a safety switch to press a firing handle, and driving a firing gear to drag a rack and a cutter bar by a motor assembly to enable a cutting knife assembly to anastomose and cut forwards at a constant speed along a knife slot of the nail bin seat;

end state of pushing nails: the cutting knife assembly moves to the top of the nail bin seat along the knife groove of the nail bin seat to finish anastomotic cutting of tissues. Knot(s)

Beam state: and loosening the firing handle, returning the cutting knife assembly to the bottom along the knife slot of the nail bin seat according to the output speed of the variable frequency motor, then pressing the reset handle, bouncing the closing handle, separating the nail bin seat assembly from the nail bin assembly, and completing one-time anastomosis cutting operation.

Claims

1. The electric endoscopic stapler comprises a stapler shell, a fixed bracket, a firing assembly, a bending assembly, a resetting assembly, a forced resetting assembly and a nail bin assembly; the anastomat shell comprises a handle cavity formed by a handle left cavity and a handle right cavity, and the firing assembly, the fixed support and the resetting assembly are integrated in the handle cavity; the device is characterized in that the firing assembly comprises a variable frequency motor, a rack, a firing gear, a firing switch button and a cutter bar; the driving gear is arranged in the center of the top end of the variable frequency motor, the firing gear is arranged on the step of one side of the variable frequency motor, which is close to the bending assembly, the firing gear is connected with the rack in a transmission way, and the end part of the driving end of the rack is detachably connected with the cutter bar.

2. The powered endoscopic stapler of claim 1, wherein the reset assembly includes a reset handle structure and a close handle structure; the reset handle structure comprises a reset handle, a reset handle spring, a reset handle backseat and a reset handle backseat spring; the tail end of the fixed bracket is L-shaped, and the reset handle is erected on a cross beam at the tail end of the fixed bracket; the reset handle consists of a mounting part and toggle buttons at two sides of the mounting part, and a flange at one side of the mounting part of the reset handle is clamped into a clamping groove between two lug seats at the tail end of the fixed support; one end of the reset handle spring is sleeved on the support rod connected with the two flanges, and the other end of the reset handle spring is erected on the circuit board; the spring of the reset handle rear seat is sleeved on a spring column of the reset handle rear seat, and the reset handle rear seat is arranged at the tail end of the fixed support behind the reset handle through a pin shaft.

3. The powered endoscopic stapler of claim 1, wherein the band knife bar is sleeved with a securing lever, one end of the securing lever is disposed within the stapler housing, and the other end is movably coupled to the cartridge assembly via a steering joint assembly.

4. The powered endoscopic stapler of claim 2, wherein the closure handle structure comprises a firing connection block, a closure handle, a cannula, and a first link; the first connecting rod consists of an arc-shaped rod above and a mounting frame arranged at one end of the arc-shaped rod, a raised arc-shaped lug is arranged at the other end of the arc-shaped rod, and the arc-shaped lug is contacted with a flange at the other side of the mounting part of the reset handle; the top end of the closing handle is hinged on the fixed support together with the bottom of the mounting frame, and the connecting end of the arc-shaped rod and the mounting frame is inserted into a U-shaped groove at the tail end of the firing connecting block and is rotationally connected with the firing connecting block through a rotating shaft; the sleeve is sleeved outside the fixed rod, and the head end of the firing connecting block is connected with a firing limiting block at the tail end of the sleeve.

5. The electric endoscopic stapler according to claim 4, wherein a firing handle is provided at one end of the rotating shaft extending out of the firing connection block, a firing handle spring is provided on the rotating shaft outside the firing handle, and the other end of the firing handle spring is provided on the protruding portion of the fixing support at the same side.

6. The electric endoscopic stapler of claim 4, wherein a sleeve return spring is provided on a side of the firing stop block remote from the firing connection block.

7. The powered endoscopic stapler of claim 1, wherein the forced reduction assembly includes a manual reduction cap, a forced reduction button, a forced reduction firing block, a forced reduction card; the forced reset button consists of a mounting disc part and a pressing rod part, and the forced reset firing block and the forced reset card are respectively assembled on two sides of the mounting disc part and are matched with the mounting disc part to be mounted in an ear seat groove formed by two ear seats at the rear end of the fixed support.

8. The powered endoscopic stapler of claim 1, wherein the turn assembly includes a turn handle cover, a turn handle, a turn gear; the bending handle cover consists of a first bending handle cover and a second bending handle cover; a groove matched with the bending handle is arranged above the bending gear the gear part below the turning gear is arranged in the mounting hole of the first turning handle cover; the bending transmission gear set comprises a first bending transmission gear and a second bending transmission gear which are oppositely arranged in a chute of a cavity of the first bending handle cover, a plurality of transmission teeth are uniformly distributed on opposite surfaces of the first bending transmission gear and the second bending transmission gear, a chute matched with a sliding block in the first bending handle cover is arranged on the side surface of the first bending transmission gear and the side surface of the second bending transmission gear, and the chute corresponds to the sliding block one by one; the first bending transmission gear and the second bending transmission gear extend into the notch of the fixed rod and are positioned in the notch, the first bending transmission gear and the second bending transmission gear are respectively provided with a containing groove, and the containing grooves are assembled with the corresponding steering drag hooks arranged in the fixed rod.

9. The powered endoscopic stapler of claim 3, wherein the steering joint assembly comprises a steering joint, a connector, a connecting plate, a steering joint securing block, a steering pin block, a connecting tube, and a steering pin block spring; the steering joint fixing block is arranged on the plane at the other end of the fixing rod; a mounting cavity is formed between the connector and the steering connector fixing block, a steering pin block spring is arranged in a spring groove of the mounting cavity, the extending end of the steering pin block spring is contacted with one end of the steering pin block, and the other end of the steering pin block is contacted with the steering connector; a steering shifting block is also arranged between the steering joint and the steering joint fixing block; one end of the connecting pipe is rotatably arranged on the platform on the top surface of the connector through the connecting plate, and the other end of the connecting pipe is clamped with the nail bin assembly.

10. The electric endoscopic stapler according to claim 3, wherein the cartridge assembly is composed of a cartridge abutment and a cartridge abutment, and the cutter is disposed in a knife slot of the cartridge abutment and can reciprocate back and forth along the knife slot; the mounting end of the cutting knife extends out of the nail bin assembly and into the fixing rod to be connected with the driving end of the knife carrying rod.