Electric anastomat with novel jaw bending mechanism

Abstract

The invention discloses an electric anastomat with a novel jaw bending mechanism, the bending mechanism comprises a bending driving shaft, the bending driving shaft comprises a turntable and a shaft body which are coaxially arranged, the end face, close to the shaft body, of the turntable is provided with a limiting block, and an upper rotating hand wheel is provided with a containing groove matched with the turntable, a first shaft hole for the shaft body to penetrate through and a limiting groove matched with the limiting block; a plurality of gear convex ribs are arranged at the upper end of the gear chuck, and a second shaft hole for the shaft body to penetrate through is formed in the gear chuck; one end of the limiting spring abuts against the upper rotating hand wheel, and the other end of the limiting spring abuts against the gear chuck; the rotating handle is fixedly connected with the shaft body, and a plurality of gear clamping grooves matched with the gear convex ribs are formed in the rotating handle; and the driving sliding block is arranged on the sleeve module and can move in the axial direction relative to the sleeve module, a driving protrusion is arranged on the driving sliding block, and a V-shaped groove matched with the driving protrusion is formed in the end, away from the shaft body, of the rotating disc. According to the electric anastomat, the bending mechanism is simple in structure, good in stability and convenient to operate.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to an electric stapler with a novel jaw bending mechanism. Background Art

[0002] Electric laparoscopic cutting staplers have been widely praised in domestic and foreign markets in recent years due to their many advantages such as ease of use and good surgical treatment effects.

[0003] The jaw bending mechanism of the first-generation electric laparoscopic stapler launched by Johnson & Johnson is passive, that is, when the doctor performs the jaw bending operation, he needs to use auxiliary tools to hold the jaws of the stapler to achieve the jaw bending action. The operation of this stapler is cumbersome and reduces work efficiency.

[0004] Then, staplers with active jaw bending mechanisms appeared, such as a jaw bending mechanism disclosed in Chinese patent CN 118285865A. The bending mechanism has a complex structure and requires a separate locking mechanism to limit the bending of the jaws. Summary of the invention

[0005] Based on the above problems, the object of the present invention is to provide an electric stapler with a novel jaw bending mechanism, which has a simple structure, good stability and convenient operation.

[0006] In order to overcome the deficiencies of the prior art, the technical solution provided by the present invention is:

[0007] An electric stapler with a novel jaw bending mechanism comprises a body module, a rotating module and a sleeve module, wherein the rotating module comprises a rotating shell and a bending mechanism arranged on the rotating shell, wherein the rotating shell comprises an upper rotating hand wheel and a lower rotating hand wheel arranged up and down, and the bending mechanism comprises:

[0008] A bending drive shaft, which is rotatably arranged on the upper rotating hand wheel, comprises a coaxially arranged turntable and a shaft body, the end surface of the turntable close to the shaft body is provided with a limit block for limiting the rotation angle, the inner side of the upper rotating hand wheel is provided with a receiving groove matched with the turntable, the upper rotating hand wheel is provided with a first shaft hole for the shaft body to pass through in the middle of the receiving groove, and the receiving groove is provided with a limit groove matched with the limit block;

[0009] A gear chuck, which is limited at 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, and a second shaft hole for the shaft body to pass through is arranged on the gear chuck;

[0010] A limit spring, one end of which abuts against the upper rotating hand wheel and the other end of which abuts against the gear chuck;

[0011] A rotating handle, which is fixedly connected to the shaft body, and the rotating handle is provided with a plurality of gear slots matching the plurality of gear ribs;

[0012] A driving slider is arranged on the sleeve module and is axially movable relative to the sleeve module, the driving slider is provided with a driving protrusion, the end of the turntable away from the shaft body is provided with a V-shaped groove matching the driving protrusion, the center of the V-shaped groove and the center of the turntable have a first eccentricity, the center of the driving protrusion and the center of the driving slider have a second eccentricity, and the first eccentricity is equal to the second eccentricity.

[0013] In one of the embodiments, a rotating boss cooperating with the rotating handle is provided on the outer side of the upper rotating hand wheel, a positioning column cooperating with the gear chuck is provided inside the rotating boss, and the first axial hole passes through the positioning column.

[0014] In one of the embodiments, the gear chuck includes a coaxially arranged chuck body and a limit sleeve, the gear rib is arranged 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.

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

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

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

[0018] In one embodiment, 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.

[0019] In one embodiment, the connecting portion is in a cubic shape.

[0020] In one embodiment, a nail magazine mechanism is provided at the distal end of the sleeve module, and the nail magazine mechanism includes a nail magazine seat, a nail anvil seat movably hinged to the nail magazine seat, and a limiting spring piece that keeps the nail anvil seat in an open state;

[0021] The limiting spring piece includes a cutting knife limiting piece located in the middle and a nail support limiting pieces arranged on both sides of the cutting knife limiting piece. The cutting knife limiting piece abuts against the cutting knife assembly, and the nail support limiting piece abuts against the nail support.

[0022] In one embodiment, the cutting knife assembly is provided with a pressing surface matching the cutting knife limiting piece on a side close to the sleeve module, the cutting knife assembly is provided with a lifting surface and a limiting end surface arranged up and down on a side away from the sleeve module, and the nail magazine seat is provided with a limiting surface matching the limiting end surface;

[0023] 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 can be fed normally.

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

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

[0026] 1. The bending drive shaft is driven to rotate by rotating the handle, and the eccentrically arranged V-shaped groove on the bending drive shaft drives the driving protrusion on the driving slider to move along the axial direction of the sleeve module, so as to drive the driving slider to move along the axial direction of the sleeve module, thereby driving the rotation control mechanism to rotate through the steering connecting rod, and then driving the nail magazine mechanism to rotate, so as to realize the bending of the jaws. The structure is simple, the structural stability and reliability are high, the operation is convenient, and the efficiency and safety of the operation are improved;

[0027] 2. The driving protrusion is driven to move through the V-shaped groove, and a larger bending angle can be achieved with a smaller eccentricity, which is convenient for the gear chuck and the rotating handle to achieve self-locking after bending, and the structural stability is good;

[0028] 3. A limit block is set on the turntable, which can limit the bending angle of the jaws by cooperating with the limit groove on the upper rotating handwheel;

[0029] 4. The gear chuck can move axially along the bending drive shaft and cooperate with the rotating handle under the action of the limit spring. When the rotating handle is operated, the gear chuck moves axially along the positioning column, and the gear convex rib is positioned in the gear slot, making a "click" sound to indicate the gear position;

[0030] 5. A limiting spring is arranged in the staple cartridge seat, a limiting surface is arranged on the staple cartridge seat, and a lifting surface is arranged on the cutting knife assembly. When the suture staple assembly is placed in the staple cartridge seat, the cutting knife assembly is lifted before feeding, which can play a role of cutting insurance. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0032] Figure 1 It is a schematic structural diagram of an embodiment of an electric stapler with a novel jaw bending mechanism according to the present invention;

[0033] Figure 2 It is a schematic diagram of a partially disassembled structure of an embodiment of the present invention;

[0034] Figure 3 for Figure 2 A partial picture is shown in the middle;

[0035] Figure 4 It is a structural schematic diagram of a bending mechanism in an embodiment of the present invention;

[0036] Figure 5 It is a schematic diagram of the structure of the bending drive shaft in an embodiment of the present invention;

[0037] Figure 6 A schematic diagram of the structure of a V-shaped groove in an embodiment of the present invention;

[0038] Figure 7 This is one of the structural schematic diagrams of the upper rotating hand wheel in an embodiment of the present invention;

[0039] Figure 8 This is a second structural schematic diagram of the upper rotating hand wheel in an embodiment of the present invention;

[0040] Fig. 9 This is one of the structural schematic diagrams of the gear chuck in the embodiment of the present invention;

[0041] Fig.10 This is a second structural schematic diagram of the gear chuck in an embodiment of the present invention;

[0042] Fig.11 It is a structural schematic diagram of a rotating handle in an embodiment of the present invention;

[0043] Fig.12 This is one of the structural schematic diagrams of the driving slider in an embodiment of the present invention;

[0044] Fig.13 This is a second structural schematic diagram of a driving slider in an embodiment of the present invention;

[0045] Fig.14 Schematic diagram of the structure of the steering link in an embodiment of the present invention;

[0046] Fig.15 for Fig.14 A partial enlarged view of point B in the middle;

[0047] Fig.16 for Fig.14 A partial enlarged view of point C in the middle;

[0048] Fig.17 This is one of the schematic diagrams of the steering state in the embodiment of the present invention;

[0049] Fig.18 This is the second schematic diagram of the steering state in the embodiment of the present invention;

[0050] Fig.19 A schematic diagram of the structure of a cutting blade assembly in an embodiment of the present invention;

[0051] Fig. 20 This is a structural schematic diagram of a nail magazine seat in an embodiment of the present invention;

[0052] Fig.21 for Fig. 20 AA cross-sectional diagram of ;

[0053] Fig. 22 It is a schematic diagram of the structure of the limiting spring piece in the embodiment of the present invention;

[0054] Fig.23 It is a structural schematic diagram of the cutting knife assembly in the embodiment of the present invention in a safety state;

[0055] Fig.24 It is a structural schematic diagram of a cutting knife assembly in a safety-released state in an embodiment of the present invention;

[0056] in:

[0057] 1. Device body module;

[0058] 2. Rotating module; 211. Rotating handle; 2111. Shift slot; 2112. Fixing slot; 2113. Second connecting hole; 212. Shift chuck; 2121. Chuck body; 21211. Shift rib; 2122. Limiting sleeve; 21221. Limiting projection; 2123. Second shaft hole; 213. Limiting spring; 214. Bending drive shaft; 2141. Shaft body; 2141a. Connecting part; 2141b. First connecting hole; 2142. Turntable; 21 43, limit block; 2144, V-shaped groove; 215, upper rotating hand wheel; 2151, first shaft hole; 2152, receiving groove; 2153, limit groove; 2154, positioning column; 21541, limit slot; 2155, rotating boss; 216, lower rotating hand wheel; 231, driving slider; 2311, driving protrusion; 2312, arc surface; 2313, traction foot; 232, steering link; 2321, near end of steering link; 2322, far end of steering link;

[0059] 3. Casing module; 31. Cutting knife assembly; 311. Lifting surface; 312. Limiting end surface; 313. Pressing surface; 32. Nail magazine seat; 321. Limiting surface; 322. Cutting knife groove; 33. Limiting spring piece; 331. Cutting knife limiting piece; 332. Nail seat limiting piece;

[0060] D 1, first eccentricity;

[0061] D2, second eccentricity. DETAILED DESCRIPTION

[0062] The above scheme is further described below in conjunction with specific examples. It should be understood that these examples are used to illustrate the present invention and are not limited to the scope of the present invention. The implementation conditions adopted in the examples can be further adjusted according to the conditions of the specific manufacturer, and the unspecified implementation conditions are usually the conditions in conventional experiments.

[0063] See also Figure 1 and Figure 2 , is a structural schematic diagram of an embodiment of the present invention, which provides an electric stapler with a novel jaw bending mechanism, comprising a body module 1, a rotation module 2 and a sleeve module 3 arranged in sequence.

[0064] The body module 1 includes a cutting drive mechanism, which is transmission-connected to the cutting knife assembly to drive the cutting knife assembly to advance or retract. The body module 1 can adopt the structure in the prior art, which will not be elaborated in the present invention.

[0065] like Figure 4As shown, the rotating module 2 includes a rotating shell and a bending mechanism arranged on the rotating shell, the rotating shell includes an upper rotating hand wheel 215 and a lower rotating hand wheel 216 arranged up and down, and the bending mechanism includes a bending drive shaft 214, a gear chuck 212, a limit spring 213, a rotating handle 211 and a driving slider 231.

[0066] like Figure 5 As shown, the bending drive shaft 214 is rotatably arranged on the upper rotating hand wheel 215, and includes a coaxially arranged turntable 2142 and a shaft body 2141. The outer diameter of the turntable 2142 is larger than the shaft body 2141. A limit block 2143 for limiting the rotation angle is provided on the end surface of the turntable 2142 close to the shaft body 2141. Figure 7 As shown, a receiving groove 2152 cooperating with the turntable 2142 is provided on the inner side of the upper rotating handwheel 215, and a first axial hole 2151 for the shaft body 2141 to pass through is provided on the upper rotating handwheel 215 in the middle of the receiving groove 2152, and a limiting groove 2153 cooperating with the limiting block 2143 is provided in the receiving groove 2152. The turntable 2142 can rotate in the receiving groove 2152, and the limiting block 2143 can rotate in the limiting groove 2153, and the rotation angle is limited via the limiting groove 2153.

[0067] like Fig. 9 As shown, the gear chuck 212 is limited on the outside of the upper rotating hand wheel 215 and can move axially along the shaft 2141. A plurality of gear ribs 21211 are provided on the upper end of the gear chuck 212, and a second shaft hole 2123 is provided on the gear chuck 212 for the shaft 2141 to pass through.

[0068] The limit spring 213 has one end abutting against the upper rotating hand wheel 211 and the other end abutting against the gear chuck 212. The limit spring 213 makes the gear chuck 212 abut against the rotating handle 211 to achieve locking of the jaws after bending.

[0069] like Fig.11 As shown, the rotating handle 211 is fixedly connected to the shaft body 2141 , and the rotating handle 211 is provided with a plurality of gear slots 2111 matching with the plurality of gear ribs 21211 .

[0070] The driving slider 231 is arranged on the sleeve module 3 and is axially movable relative to the sleeve module 3. A driving protrusion 2311 is provided on the driving slider 231. Figure 6 As shown, a V-shaped groove 2144 matching the driving protrusion 2311 is provided at one end of the rotating disk 2142 away from the shaft body 2141, and the center of the V-shaped groove 2144 and the center of the rotating disk 2142 have a first eccentricity D1, as shown in FIG. Fig.13As shown, the center of the driving protrusion 2311 and the center of the driving slider 231 have a second eccentricity D2, and the first eccentricity D1 and the second eccentricity D2 are equal. 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 disk 2142.

[0071] In order to facilitate the installation of the rotating handle 211, as Figure 8 As shown, a rotating boss 2155 cooperating with the rotating handle 211 is provided on the outer side of the upper rotating hand wheel 215, and a positioning column 2154 cooperating with the gear chuck 212 is provided inside the rotating boss 2155, and the first axial hole 2151 passes 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 placing the limit spring 213 and the gear chuck 212.

[0072] like Fig. 9 and Fig.10 As shown, the gear chuck 212 includes a coaxially arranged chuck body 2121 and a limiting sleeve 2122, a plurality of gear ribs 21211 are provided on the chuck body 2121, the limiting sleeve 2122 is sleeved on the outer periphery of the positioning column 2154, two limiting protrusions 21221 arranged axially are provided on the inner wall of the limiting sleeve 2122, and a limiting groove 21541 matching the limiting protrusion 21221 is provided on the outer periphery of the positioning column 2154. When the rotating handle 211 is rotated, the protruding part between the gear slots 2111 of the rotating handle 211 is pressed against the gear rib 21221 on the gear chuck 212, so that the gear chuck 212 moves downward. After rotating at a certain angle, the gear rib 21221 moves into the gear slot 2111, and the gear chuck 212 moves upward under the action of the limit spring 213, realizing locking after bending, and at the same time making a "click sound" to indicate the gear position.

[0073] like Fig.12 and Fig.13 As shown, in order to facilitate the sliding cooperation between the driving slider 231 and the sleeve module 3 , a circular arc surface matching the outer tube of the sleeve module 3 is provided on the side of the driving slider 231 close to the sleeve module 3 .

[0074] A traction foot 2313 connected to a steering link 232 is provided on the driving slider 231. The steering link 232 is arranged between the inner tube and the outer tube of the casing module 3. Figures 14 to 16As shown, the proximal end 2321 of the steering link is provided with a limiting hole that cooperates with the traction foot 2313, and the distal end 2322 of the steering link is provided with a steering waist-shaped hole, which is sleeved on the positioning pin of the steering control mechanism. The nail magazine mechanism is fixedly connected to the steering control mechanism. When the steering link 232 moves axially along the sleeve module 3, it drives the steering control mechanism to rotate, thereby driving the nail magazine mechanism to rotate, and then realizing the bending of the jaws. 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 with 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 portion 2141a is provided at the upper end of the shaft body 2141, and a first connecting hole 2141b for a connecting member to pass through is provided on the connecting portion 2141a, and a fixing groove 2112 matching the connecting portion 2141a is provided on the rotating handle 211, and a second connecting hole 2113 for a connecting member to pass through is provided on the rotating handle 211, and the connecting member can be a rivet. Preferably, the connecting portion 2141a is in a cubic shape.

[0077] A nail magazine mechanism is provided at the distal end of the sleeve module 3, and the nail magazine mechanism includes a nail magazine seat 32, a nail support seat movably hinged to the nail magazine seat 32, and a limiting spring piece 33 that keeps the nail support seat in an open state, and the limiting spring piece 33 is fixed on the nail magazine seat 32. Specifically, as Fig. 22 As shown, the limiting spring piece 33 includes a cutting knife limiting piece 331 located in the middle and a nail seat limiting piece 332 arranged on both sides of the cutting knife limiting piece 331. The length of the nail seat limiting piece 332 is greater than the cutting knife limiting piece 331. The cutting knife limiting piece 331 abuts against the cutting knife assembly, and the nail seat limiting piece 332 abuts against the nail seat.

[0078] In order to achieve the cutting insurance function, such as Fig.19 As shown, a pressing surface 313 matching with the cutting blade limiting piece 331 is provided on the side of the cutting blade assembly 31 close to the sleeve module 3, and a lifting surface 311 and a limiting end surface 312 arranged up and down are provided on the side of the cutting blade assembly 31 away from the sleeve module 3, and a limiting surface 321 matching with the limiting end surface 312 is provided on the nail magazine seat 32. When there is no suture nail assembly in the nail magazine seat 32, after the nail support seat and the nail magazine seat 32 are closed, the cutting blade assembly 31 is pressed and moved downward, and the limiting end surface 312 abuts against the limiting surface 321 to play a safety role, as shown in FIG. Fig.23 When the staple assembly is installed in the staple cartridge seat 32, the staple assembly abuts against the lifting surface 311, and the cutting knife assembly 31 is not pressed down and abuts against the limiting surface 321, so that the cutting knife assembly 31 is fed normally in the cutting knife groove 322, such as Fig.24 shown.

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

[0080] like Fig.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. Fig. 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, so as to drive 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 only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. An electric stapler with a novel jaw bending mechanism, comprising a body module, a rotating module and a sleeve module, wherein the rotating module comprises a rotating shell and a bending mechanism arranged on the rotating shell, wherein the rotating shell comprises an upper rotating hand wheel and a lower rotating hand wheel arranged up and down, characterized in that: The bending mechanism comprises: A bending drive shaft, which is rotatably arranged on the upper rotating hand wheel, comprises a coaxially arranged turntable and a shaft body, the end surface of the turntable close to the shaft body is provided with a limit block for limiting the rotation angle, the inner side of the upper rotating hand wheel is provided with a receiving groove matched with the turntable, the upper rotating hand wheel is provided with a first shaft hole for the shaft body to pass through in the middle of the receiving groove, and the receiving groove is provided with a limit groove matched with the limit block; A gear chuck, which is limited at 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, and a second shaft hole for the shaft body to pass through is arranged on the gear chuck; A limit spring, one end of which abuts against the upper rotating hand wheel and the other end of which abuts against the gear chuck; A rotating handle, which is fixedly connected to the shaft body, and the rotating handle is provided with a plurality of gear slots matching the plurality of gear ribs; A driving slider is arranged on the sleeve module and is axially movable relative to the sleeve module, the driving slider is provided with a driving protrusion, the end of the turntable away from the shaft body is provided with a V-shaped groove matching the driving protrusion, the center of the V-shaped groove and the center of the turntable have a first eccentricity, the center of the driving protrusion and the center of the driving slider have a second eccentricity, and the first eccentricity is equal to the second eccentricity.

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

3. The electric stapler with a novel 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 arranged 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 novel 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 novel jaw bending mechanism according to claim 4, characterized in that: The driving slide block is provided with a traction foot connected to the steering link.

6. The electric stapler with a novel 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.

7. The electric stapler with a novel 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.

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

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

10. The electric stapler with a novel jaw bending mechanism according to claim 9, characterized in that: The cutting knife assembly is provided with a pressing surface matched with the cutting knife limiting piece on one side close to the sleeve module, and a lifting surface and a limiting end surface arranged up and down are provided on the side of the cutting knife assembly away from the sleeve module, and a limiting surface matched with the limiting end surface is provided on the nail magazine seat; 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 can be fed normally.

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