Electric anastomat with jaw deflection mechanism

Abstract

The application discloses an electric anastomat with a jaw bending mechanism, and the bending mechanism comprises a bending driving shaft, a rotating hand wheel, a gear disc, a limiting spring and a rotating handle.The bending driving shaft comprises a rotating disc and a shaft body arranged coaxially, and the rotating disc is provided with a limiting block close to the end face of the shaft body.The rotating hand wheel is provided with a containing groove matched with the rotating disc, a first shaft hole through which the shaft body passes and a limiting groove matched with the limiting block.The gear disc is provided with a plurality of gear convex ribs on the upper end, and a second shaft hole through which the shaft body passes.The limiting spring is abutted on the rotating hand wheel at one end and on the gear disc at the other end.The rotating handle is fixedly connected with the shaft body, and is provided with a plurality of gear clamping grooves matched with the plurality of gear convex ribs.The driving sliding block is movably arranged on the sleeve module in the axial direction, and is provided with a driving convex rib on the driving sliding block.The rotating disc is provided with a V-shaped groove matched with the driving convex rib on the end away from the shaft body.The electric anastomat provided by the application has simple structure, good stability and convenient operation.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of medical equipment, in particular to an electric anastomat with a jaw bending mechanism. BACKGROUND

[0002] In recent years, electric endoscopic cutting anastomosers have been widely praised in the domestic and foreign markets due to their convenience of use, good surgical treatment effect and many other advantages.

[0003] The first generation of electric endoscopic anastomosers launched by Johnson & Johnson has a passive jaw bending mechanism, that is, when a doctor performs a jaw bending operation, an auxiliary tool needs to be used to press the jaw of the anastomat to realize the jaw bending action. The anastomat is complicated to operate and reduces work efficiency.

[0004] Then, an anastomat with an active jaw bending mechanism appeared, such as the jaw bending mechanism disclosed in Chinese Patent CN 118285865 A. The bending mechanism is complex in structure and needs to be separately provided with a locking mechanism to limit the jaw bending. SUMMARY

[0005] Based on the above problems, the purpose of the present application is to provide an electric anastomat with a jaw bending mechanism, which is simple in structure, good in stability and convenient to operate.

[0006] In order to overcome the shortcomings of the prior art, the technical scheme provided by the present application is as follows:

[0007] The electric anastomat with a jaw bending mechanism comprises a body module, a rotating module and a sleeve module. The rotating module comprises a rotating shell and a bending mechanism arranged on the rotating shell. The rotating shell comprises an upper rotating hand wheel and a lower rotating hand wheel arranged in an up-down manner. The bending mechanism comprises:

[0008] A bending drive shaft is rotationally arranged on the upper rotating hand wheel and comprises a rotating disc and a shaft body arranged coaxially. A limiting block for limiting the rotation angle is arranged on the end face of the shaft body close to the rotating disc. A containing groove matched with the rotating disc is arranged on the inner side of the upper rotating hand wheel. A first shaft hole for the shaft body to pass through is arranged on the upper rotating hand wheel at the middle part of the containing groove. A limiting groove matched with the limiting block is arranged in the containing groove.

[0009] A gear chuck is limited on the outer side of the upper rotating hand wheel and can move axially along the shaft body. A plurality of gear convex ribs are arranged on the upper end of the gear chuck. A second shaft hole for the shaft body to pass through is arranged on the gear chuck.

[0010] A limiting spring is arranged on the upper rotating hand wheel at one end and on the gear chuck at the other end.

[0011] A rotating handle fixedly connected with the shaft body, the rotating handle being provided with a plurality of gear clamping grooves matched with the plurality of gear protrusions;

[0012] A driving slider provided on the sleeve module and axially movably arranged relative to the sleeve module, the driving slider being provided with a driving protrusion, the rotating disc being provided, at an end away from the shaft body, with a V-shaped groove matched with the driving protrusion, the center of the V-shaped groove being provided with a first eccentricity from the center of the rotating disc, the center of the driving protrusion being provided with a second eccentricity from the center of the driving slider, the first eccentricity being equal to the second eccentricity.

[0013] In one of the embodiments, the outer side of the upper rotating hand wheel is provided with a rotating boss matched with the rotating handle, the rotating boss being provided with a positioning column matched with the gear clamping disc, and the first shaft hole penetrates the positioning column.

[0014] In one of the embodiments, the gear clamping disc comprises a clamping disc body and a limiting sleeve coaxially arranged, the gear protrusions are arranged on the clamping disc body, the limiting sleeve is sleeved on the outer periphery of the positioning column, the inner wall of the limiting sleeve is provided with at least one limiting protrusion arranged in the axial direction, and the outer periphery of the positioning column is provided with a limiting clamping groove matched with the limiting protrusion.

[0015] In one of the embodiments, the side of the driving slider close to the sleeve module is provided with a circular arc surface matched with the sleeve module.

[0016] In one of the embodiments, the driving slider is provided with a traction foot connected to a steering connecting rod.

[0017] In one of the embodiments, the limiting block is arc-shaped, and the limiting groove is arc-shaped and has a central angle of 180 degrees.

[0018] In one of the embodiments, the upper end of the shaft body is provided with a connecting portion, the rotating handle is provided with a fixing groove matched with the connecting portion, the connecting portion is provided with a first connecting hole through which a connecting member passes, and the rotating handle is provided with a second connecting hole through which the connecting member passes.

[0019] In one of the embodiments, the connecting portion is in the shape of a cube.

[0020] In one of the embodiments, the distal end of the sleeve module is provided with a staple cartridge mechanism, the staple cartridge mechanism comprising a staple cartridge seat, a staple abutting seat movably hinged with the staple cartridge seat, and a limiting spring piece enabling the staple abutting seat to be in an open state.

[0021] The limiting elastic sheet comprises a cutting knife limiting sheet in the middle and a nail seat limiting sheet arranged on both sides of the cutting knife limiting sheet, the cutting knife limiting sheet is in abutment with the cutting knife assembly, and the nail seat limiting sheet is in abutment with the nail seat.

[0022] In one of the embodiments, the cutting knife assembly is provided with a pressing surface matched with the cutting knife limiting sheet on one side close to the sleeve module, and is provided with a lifting surface and a limiting end surface arranged in an up-down manner on the side away from the sleeve module, and the nail cartridge seat is provided with a limiting surface matched with the limiting end surface;

[0023] When the nail cartridge seat is empty of the suture nail assembly, the cutting knife assembly is pressed and moves downward after the nail seat is closed with the nail cartridge seat, and the limiting end surface is in abutment with the limiting surface; when the nail cartridge seat is installed with the suture nail assembly, the suture nail assembly is in abutment with the lifting surface, so that the cutting knife assembly is normally fed.

[0024] The distal end in the above technical solution refers to the end close to the patient during the operation, and the proximal end refers to the end away from the patient during the operation.

[0025] Compared with the prior art, the advantages of the present application are:

[0026] 1. The rotating handle drives the bending drive shaft to rotate, the eccentric V-shaped groove on the bending drive shaft drives the driving protrusion on the driving sliding block to move along the sleeve module in the axial direction, so as to drive the driving sliding block to move along the sleeve module in the axial direction, thereby driving the rotation control mechanism to rotate through the steering connecting rod, and further driving the nail cartridge mechanism to rotate, so as to realize the bending of the jaw. The structure is simple, stable and reliable, easy to operate, and improves the efficiency and safety of the operation.

[0027] 2. The V-shaped groove drives the driving protrusion to move, and a smaller eccentric distance can realize a larger bending angle, which is convenient for the gear chuck and the rotating handle to cooperate to realize self-locking after bending, and the structure is stable.

[0028] 3. The limiting block is arranged on the rotating disc, and the limiting block cooperates with the limiting groove on the upper rotating handle to limit the bending angle of the jaw.

[0029] 4. The gear chuck can move axially along the bending drive shaft and cooperate with the rotating handle under the action of the limiting spring. When the rotating handle is operated, the gear chuck moves axially along the positioning column, the gear protrusion is positioned in the gear slot, and a "clicking sound" is emitted to prompt the gear position.

[0030] 5. The limiting elastic sheet is arranged in the nail cartridge seat, the limiting surface is arranged on the nail cartridge seat, and the lifting surface is arranged on the cutting knife assembly. After the suture nail assembly is placed in the nail cartridge seat, the cutting knife assembly is lifted to be fed, which can play a cutting insurance role. BRIEF DESCRIPTION OF DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort based on these drawings.

[0032] Figure 1 Structure schematic diagram of the embodiment of the electric anastomat with jaw bending mechanism of the present application;

[0033] Figure 2 Structure schematic diagram of the embodiment of the present application;

[0034] Figure 3 Structure schematic diagram of the embodiment of the present application; Figure 2 Structure schematic diagram of the embodiment of the present application;

[0035] Figure 4 Structure schematic diagram of the embodiment of the present application;

[0036] Figure 5 Structure schematic diagram of the embodiment of the present application;

[0037] Figure 6 Structure schematic diagram of the embodiment of the present application;

[0038] Figure 7 Structure schematic diagram of the embodiment of the present application;

[0039] Figure 8 Structure schematic diagram of the embodiment of the present application;

[0040] Figure 9 Structure schematic diagram of the embodiment of the present application;

[0041] Figure 10 Structure schematic diagram of the embodiment of the present application;

[0042] Figure 11 Structure schematic diagram of the embodiment of the present application;

[0043] Figure 12 Structure schematic diagram of the embodiment of the present application;

[0044] Figure 13 Structure schematic diagram of the embodiment of the present application;

[0045] Figure 14 Structure schematic diagram of the embodiment of the present application;

[0046] Figure 15 for Figure 14 a partial enlarged view at B in the middle;

[0047] Figure 16 for Figure 14 a partial enlarged view at C in the middle;

[0048] Figure 17 for one of the schematic diagrams of the steering state in the embodiment of the application;

[0049] Figure 18 for another schematic diagram of the steering state in the embodiment of the application;

[0050] Figure 19 for a schematic diagram of the cutting knife assembly in the embodiment of the application;

[0051] Figure 20 for a schematic diagram of the staple cartridge seat in the embodiment of the application;

[0052] Figure 21 for Figure 20 a schematic diagram of the A-A cross section;

[0053] Figure 22 for a schematic diagram of the limiting elastic sheet in the embodiment of the application;

[0054] Figure 23 for a schematic diagram of the cutting knife assembly in the embodiment of the application in the safety state;

[0055] Figure 24 for a schematic diagram of the cutting knife assembly in the embodiment of the application in the safety state;

[0056] wherein:

[0057] 1, body module;

[0058] 2, rotation module; 211, rotation handle; 2111, gear slot; 2112, fixed slot; 2113, second connecting hole; 212, gear chuck; 2121, chuck body; 21211, gear protrusion; 2122, limiting sleeve; 21221, limiting protrusion; 2123, second shaft hole; 213, limiting spring; 214, bending drive shaft; 2141, shaft body; 2141a, connecting part; 2141b, first connecting hole; 2142, turntable; 2143, limiting block; 2144, V-shaped groove; 215, upper rotation hand wheel; 2151, first shaft hole; 2152, accommodating groove; 2153, limiting groove; 2154, positioning column; 21541, limiting slot; 2155, rotation boss; 216, lower rotation hand wheel; 231, drive slider; 2311, drive protrusion; 2312, circular arc surface; 2313, traction foot; 232, steering connecting rod; 2321, steering connecting rod proximal end; 2322, steering connecting rod distal end;

[0059] 3, sleeve module; 31, cutting knife assembly; 311, lifting surface; 312, limiting end surface; 313, pressing surface; 32, nail cartridge seat; 321, limiting surface; 322, cutting knife groove; 33, limiting elastic sheet; 331, cutting knife limiting sheet; 332, nail seat limiting sheet;

[0060] D1, first eccentricity;

[0061] D2, second eccentricity. DETAILED DESCRIPTION

[0062] The above scheme will be further described in combination with specific examples. It should be understood that these examples are used to illustrate the present application and are not limited to limit the scope of the present application. The implementation conditions used in the examples can be further adjusted according to the specific conditions of the manufacturer, and the implementation conditions not mentioned are usually the conditions in the conventional experiment.

[0063] Reference Figure 1 and Figure 2 , the structural schematic diagram of the embodiment of the present application, provides an electric anastomat with a jaw bending mechanism, which comprises a body module 1, a rotation module 2 and a sleeve module 3 arranged in sequence.

[0064] The body module 1 comprises a cutting drive mechanism which is in transmission connection with a cutting knife assembly to drive the cutting knife assembly to feed or retreat, and the body module 1 can adopt the structure in the prior art, which is not described in detail in the present application.

[0065] As Figure 4As shown, the rotating module 2 comprises a rotating shell and a bending mechanism arranged on the rotating shell, the rotating shell comprises an upper rotating handle 215 and a lower rotating handle 216 arranged in an up-down manner, and the bending mechanism comprises a bending driving shaft 214, a gear chuck 212, a limiting spring 213, a rotating handle 211 and a driving slider 231.

[0066] As shown in the figure, Figure 5 The bending driving shaft 214 is arranged on the upper rotating handle 215 in a rotating manner, and comprises a rotating disc 2142 and a shaft body 2141 arranged in a coaxial manner, the outer diameter of the rotating disc 2142 is greater than that of the shaft body 2141, and a limiting block 2143 for limiting the rotating angle is arranged on the end face of the rotating disc 2142 close to the shaft body 2141, as shown in the figure, Figure 7 The inner side of the upper rotating handle 215 is provided with a containing groove 2152 matched with the rotating disc 2142, the upper rotating handle 215 is provided with a first shaft hole 2151 for the shaft body 2141 to pass through at the middle part of the containing groove 2152, and a limiting groove 2153 matched with the limiting block 2143 is arranged in the containing groove 2152, the rotating disc 2142 can rotate in the containing groove 2152, and the limiting block 2143 can rotate in the limiting groove 2153, and the rotating angle is limited through the limiting groove 2153.

[0067] As shown in the figure, Figure 9 The gear chuck 212 is limited on the outer side of the upper rotating handle 215 and can move axially along the shaft body 2141, the upper end of the gear chuck 212 is provided with a plurality of gear convex ribs 21211, and the second shaft hole 2123 for the shaft body 2141 to pass through is arranged on the gear chuck 212.

[0068] The limiting spring 213 is abutted on the upper rotating handle 211 at one end and is abutted on the gear chuck 212 at the other end, the gear chuck 212 is abutted on the rotating handle 211 through the limiting spring 213, and the locking after the bending of the jaw is realized.

[0069] As shown in the figure, Figure 11 The rotating handle 211 is fixedly connected with the shaft body 2141, and the rotating handle 211 is provided with a plurality of gear clamping grooves 2111 matched with the plurality of gear convex ribs 21211.

[0070] The driving slider 231 is arranged on the sleeve module 3 and is arranged axially movably relative to the sleeve module 3, and the driving slider 231 is provided with a driving protrusion 2311, as shown in the figure, Figure 6 The end of the rotating disc 2142 away from the shaft body 2141 is provided with a V-shaped groove 2144 matched with the driving protrusion 2311, the center of the V-shaped groove 2144 has a first eccentricity D1 from the center of the rotating disc 2142, as shown in the figure, Figure 13As shown, the center of the driving protrusion 2311 has a second eccentricity D2 from the center of the driving slider 231, and the first eccentricity D1 is equal to the second eccentricity D2. Here, the center of the V-shaped groove 2144 refers to the axial position when the driving protrusion 2311 is located in the middle of the V-shaped groove 2144. In the initial state, the driving protrusion 2311 is located in the middle of the V-shaped groove 2144, and the center of the driving slider 231 is located on the axis of the rotating disc 2142.

[0071] In order to facilitate the installation of the rotating handle 211, as shown, a rotating boss 2155 matched with the rotating handle 211 is arranged on the outer side of the upper rotating handle 215, and a positioning column 2154 matched with the gear clamping disc 212 is arranged in the rotating boss 2155. The first shaft hole 2151 penetrates through the positioning column 2154, and the positioning column 2154 is arranged in the middle of the rotating boss 2155 and has a space between the rotating boss 2155 for the positioning spring 213 and the gear clamping disc 212. Figure 8

[0072] Figure 9 Figure 10 As shown, the gear clamping disc 212 includes a coaxially arranged clamping disc body 2121 and a limiting sleeve 2122. A plurality of gear protrusions 21211 are arranged on the clamping disc body 2121, the limiting sleeve 2122 is sleeved on the outer periphery of the positioning column 2154, and two limiting protrusions 21221 are arranged on the inner wall of the limiting sleeve 2122 in the axial direction. At the same time, a limiting clamping groove 21541 matched with the limiting protrusions 21221 is arranged on the outer periphery of the positioning column 2154. When the rotating handle 211 is rotated, the protruding part between the gear clamping grooves 2111 of the rotating handle 211 is pressed on the gear protrusions 21211 on the gear clamping disc 212, so that the gear clamping disc 212 moves downward. After rotating a certain angle, the gear protrusions 21211 move into the gear clamping grooves 2111, the gear clamping disc 212 moves upward under the action of the limiting spring 213, and the locking after bending is realized, and a "click" sound is emitted to prompt the gear.

[0073] Figure 12 Figure 13 As shown, in order to facilitate the sliding cooperation of the driving slider 231 and the sleeve module 3, an arc surface matched with the outer tube of the sleeve module 3 is arranged on the side of the driving slider 231 close to the sleeve module 3.

[0074] A traction foot 2313 connected to the steering connecting rod 232 is arranged on the driving slider 231, and the steering connecting rod 232 is arranged between the inner tube and the outer tube of the sleeve module 3. Figure 14 to Figure 16 ​​​​​As shown, the proximal end 2321 of the steering connecting rod is provided with a limiting hole matched with the traction foot 2313, and the distal end 2322 of the steering connecting rod is provided with a steering waist-shaped hole which is sleeved on a positioning pin of the steering control mechanism. The nail cartridge mechanism is fixedly connected with the steering control mechanism. When the steering connecting rod 232 moves axially along the sleeve module 3, the steering control mechanism is driven to rotate, thereby driving the nail cartridge mechanism to rotate, and further realizing the bending of the jaw. Here, the distal end refers to the end close to the patient during surgery, and the proximal end refers to the end away from the patient during surgery.

[0075] In this example, the limiting block 2143 is arc-shaped, and correspondingly, the limiting groove 2153 is arc-shaped and has a central angle of 180 degrees.

[0076] In order to facilitate the connection between the bending drive shaft 214 and the rotating handle 211, a connecting part 2141a is arranged on the upper end of the shaft body 2141, a first connecting hole 2141b for the connecting piece to pass through is arranged on the connecting part 2141a, a fixing groove 2112 matched with the connecting part 2141a is arranged on the rotating handle 211, and a second connecting hole 2113 for the connecting piece to pass through is arranged on the rotating handle 211. The connecting piece can be a rivet. Preferably, the connecting part 2141a is in the shape of a cube.

[0077] A nail cartridge mechanism is arranged at the distal end of the sleeve module 3. The nail cartridge mechanism comprises a nail cartridge seat 32, a nail abutting seat movably connected with the nail cartridge seat 32, and a limiting spring piece 33 for enabling the nail abutting seat to be in an open state. The limiting spring piece 33 is fixed on the nail cartridge seat 32. Specifically, as shown in Figure 22 The limiting spring piece 33 comprises a cutting knife limiting piece 331 located in the middle part and nail abutting seat limiting pieces 332 arranged on both sides of the cutting knife limiting piece 331. The length of the nail abutting seat limiting piece 332 is greater than that of the cutting knife limiting piece 331. The cutting knife limiting piece 331 abuts against the cutting knife assembly, and the nail abutting seat limiting piece 332 abuts against the nail abutting seat.

[0078] In order to realize the cutting safety function, as shown in Figure 19 A pressing surface 313 matched with the cutting knife limiting piece 331 is arranged on the side of the cutting knife assembly 31 close to the sleeve module 3, and a lifting surface 311 and a limiting end surface 312 arranged in an up-down manner are arranged on the side of the cutting knife assembly 31 away from the sleeve module 3. A limiting surface 321 matched with the limiting end surface 312 is arranged on the nail cartridge seat 32. When there is no suture nail assembly in the nail cartridge seat 32, after the nail abutting seat is closed with the nail cartridge seat 32, the cutting knife assembly 31 is pressed and moves downward, and the limiting end surface 312 abuts against the limiting surface 321 to play a safety role, as shown in Figure 23 When the suture nail assembly is installed in the nail cartridge seat 32, the suture nail assembly abuts against the lifting surface 311, and the cutting knife assembly 31 will not be pressed and moved downward to abut against the limiting surface 321, so that the cutting knife assembly 31 normally feeds in the cutting knife groove 322, as shown in Figure 24 .

[0079] The working principle of the present invention is:

[0080] like Figure 17 As shown, in the initial state, the driving protrusion 2311 is located in the middle of the V-shaped groove 2144, and the rotating handle 211 is manually rotated to drive the bending driving shaft 214 to rotate, as shown in FIG. Figure 20 As shown, the V-shaped groove 2144 on the turntable 2142 drives the driving protrusion 2311 to move axially along the sleeve module 3, thereby driving the driving slider 231 to move axially along the sleeve module 3, and the traction foot 2313 drives the steering link 232 to move axially along the sleeve module 3 and drives the steering control mechanism to rotate, thereby driving the nail magazine mechanism to rotate, and then realizing the bending of the jaws.

[0081] In summary, the bending and turning mechanism of the electric stapler has a simple structure, a simple manufacturing process, good structural stability, and convenient operation, thereby improving surgical efficiency and safety.

[0082] The above examples are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the contents of the present invention and implement them accordingly. They are not intended to limit the scope of protection of the present invention. Any equivalent changes or modifications made in accordance with the spirit of the present invention are intended to be covered by the scope of protection of the present invention.

Claims

1. An electric stapler with a jaw bending mechanism, comprising a body module, a rotating module, and a cannula module, wherein the rotating module comprises a rotating housing and a bending mechanism disposed on the rotating housing, wherein the rotating housing comprises an upper rotating handwheel and a lower rotating handwheel disposed above and below, characterized in that: The bending mechanism comprises: A bending drive shaft, which is rotatably arranged on the upper rotating handwheel, comprises a coaxially arranged turntable and a shaft body, wherein the end surface of the turntable close to the shaft body is provided with a limit block for limiting the rotation angle, an accommodating groove cooperating with the turntable is provided on the inner side of the upper rotating handwheel, a first axial hole for the shaft body to pass through is provided on the upper rotating handwheel in the middle of the accommodating groove, and a limit groove cooperating with the limit block is provided in the accommodating groove; A gear chuck is limited to the outside of the upper rotating handwheel and can move axially along the shaft body. The upper end of the gear chuck is provided with a plurality of gear ribs, and the gear chuck is provided with a second shaft hole for the shaft body to pass through; a limit spring, one end of which abuts against the upper rotating hand wheel and the other end abuts against the gear chuck; a rotating handle fixedly connected to the shaft body, the rotating handle being provided with a plurality of gear slots matching the plurality of gear ribs; a driving slider, which is disposed on the casing module and is axially movable relative to the casing module, the driving slider being provided with a driving protrusion, the rotating disk being provided with a V-shaped groove matching the driving protrusion at one end thereof away from the shaft body, the center of the V-shaped groove and the center of the rotating disk having a first eccentricity, the center of the driving protrusion and the center of the driving slider having a second eccentricity, the first eccentricity being equal to the second eccentricity; The driving slider is provided with a traction foot connected to the steering link. The traction foot drives the steering link to move axially along the casing module and drives the steering control mechanism to rotate, thereby driving the nail magazine mechanism to rotate.

2. The electric stapler with a jaw bending mechanism according to claim 1, characterized in that: A rotating boss that cooperates with the rotating handle is provided on the outer side of the upper rotating hand wheel, a positioning column that cooperates with the gear chuck is provided inside the rotating boss, and the first axial hole passes through the positioning column.

3. The electric stapler with a jaw bending mechanism according to claim 2, characterized in that: The gear chuck includes a coaxially arranged chuck body and a limit sleeve, the gear rib is provided on the chuck body, the limit sleeve is sleeved on the outer periphery of the positioning column, the inner wall of the limit sleeve is provided with at least one limit protrusion arranged along the axial direction, and the outer periphery of the positioning column is provided with a limit groove matching the limit protrusion.

4. The electric stapler with a jaw bending mechanism according to claim 1, characterized in that: A side of the driving slider close to the sleeve module is provided with an arc surface matching the sleeve module.

5. The electric stapler with a jaw bending mechanism according to claim 1, characterized in that: The limiting block is arc-shaped, and the limiting groove is arc-shaped with a central angle of 180 degrees.

6. The electric stapler with a jaw bending mechanism according to claim 1, characterized in that: A connecting portion is provided at the upper end of the shaft body, a fixing groove matching the connecting portion is provided on the rotating handle, a first connecting hole for a connecting member to pass through is provided on the connecting portion, and a second connecting hole for the connecting member to pass through is provided on the rotating handle.

7. The electric stapler with a jaw bending mechanism according to claim 6, characterized in that: The connecting portion is in a cube shape.

8. The electric stapler with a jaw bending mechanism according to claim 1, characterized in that: A nail magazine mechanism is provided at the distal end of the cannula module, and the nail magazine mechanism includes a nail magazine seat, a nail anvil movably hinged to the nail magazine seat, and a limiting spring piece that keeps the nail anvil in an open state; The limiting spring piece includes a cutting knife limiting piece located in the middle and a nail seat limiting piece arranged on both sides of the cutting knife limiting piece. The cutting knife limiting piece abuts against the cutting knife assembly, and the nail seat limiting piece abuts against the nail seat.

9. The electric stapler with a jaw bending mechanism according to claim 8, characterized in that: The cutting blade assembly is provided with a pressing surface matching the cutting blade limiting piece on a side close to the casing module, and a lifting surface and a limiting end surface arranged up and down are provided on a side of the cutting blade assembly facing away from the casing module, and the nail magazine seat is provided with a limiting surface matching the limiting end surface; When there is no suture staple assembly in the staple magazine seat, after the staple support seat and the staple magazine seat are closed, the cutting knife assembly is pressed and moved downward, and the limiting end surface abuts against the limiting surface; when the suture staple assembly is installed in the staple magazine seat, the suture staple assembly abuts against the lifting surface, so that the cutting knife assembly is fed normally.

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