Cutting structure of anastomat, anastomat and anastomat system

Abstract

The invention provides a cutting structure of an anastomat, the anastomat and an anastomat system.The cutting structure of the anastomat comprises a cutting assembly, the cutting assembly comprises a cutting knife body and a cutting knife head, and a blade part is arranged on the cutting knife head; and the driving mechanism is connected with the cutting assembly, and the driving mechanism is used for driving the cutting assembly to conduct linear cutting in the target direction and meanwhile driving the cutting knife body and the cutting knife head to conduct relative movement to conduct angular cutting. By means of the angular displacement of the cutting tool bit, the cutting effect can be improved, the target cutting tissue is prevented from being torn under the pressure of the cutting tool bit, damage to the blade part in the cutting process is reduced, and safety in the operation process is improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a stapler cutting structure, a stapler and a stapler system. Background Art

[0002] The surgical stapler is a minimally invasive surgical instrument commonly used in surgery. It replaces traditional manual suturing and is mainly used for organ stump sealing and incision anastomosis in minimally invasive surgical treatment.

[0003] The existing stapler also includes a cutting function, which can cut tissues while suturing. The stapler has a cutting knife inside, and during the cutting process, the cutting knife is pushed forward along the tissue to be cut. This cutting method utilizes the extrusion of the tissue to be cut by the cutting knife, but excessive extrusion force will cause damage to both the tissue to be cut and the blade. The contact position between the blade and the tissue to be cut is stressed, which will pull the surrounding tissue of the tissue to be cut, affecting the accuracy of cutting tissue and the safety of the cutting process. It will also cause the blade of the cutting knife to curl or break, resulting in serious medical accidents.

[0004] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the application and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Summary of the invention

[0005] In view of this, the purpose of the present application is to provide a stapler cutting structure and a stapler to solve the problem of the blade being easily damaged during cutting, reduce the risk of medical accidents caused by the cutting knife, and improve the cutting effect.

[0006] To achieve the above-mentioned purpose, the present application provides a cutting structure of a stapler, comprising: a cutting assembly, the cutting assembly comprising a cutting blade body and a cutting blade head, the cutting blade head being provided with a blade portion;

[0007] A driving mechanism is connected to the cutting assembly, and is used to drive the cutting assembly to perform linear cutting along a target direction and simultaneously drive the cutting head to perform rotational motion.

[0008] As a further improvement of the implementation mode of the present application, the driving mechanism includes a second motor, a threaded sleeve, a screw and a transmission rod, the second motor is connected to the threaded sleeve, the threaded sleeve is arranged on the screw and cooperates with the screw thread, the second motor drives the threaded sleeve to rotate, the threaded sleeve drives the screw to move linearly, and the screw drives the transmission rod to move linearly;

[0009] The driving mechanism further comprises: a screw, one end of the screw rod is provided with an outward expansion portion, one end of the transmission rod is provided with a recessed portion, the outward expansion portion is sleeved with the recessed portion, the screw passes through the outward expansion portion and the side wall of the recessed portion, so that the screw rod is fixedly connected to the transmission rod;

[0010] The other end of the transmission rod is provided with a matching portion, and one end of the cutting blade is provided with a protruding portion. The matching portion is engaged with the protruding portion, so that the transmission rod and the cutting blade are fixedly connected in the linear movement direction, and the transmission rod drives the cutting blade to move linearly.

[0011] As a further improvement of the embodiment of the present application, the cutting assembly includes two cutting heads, and the two cutting heads are symmetrically arranged along the cutting blade body;

[0012] The two cutting heads are arranged in parallel and a cutting gap is formed between the two cutting heads;

[0013] The opposing surfaces of the cutting blade head and the cutting blade body are connected by clearance fit.

[0014] As a further improvement of the implementation manner of the present application, the driving mechanism includes:

[0015] A second drive assembly is used to drive the cutting head to reciprocate relative to the cutting blade body to perform angular cutting.

[0016] As a further improvement of the implementation manner of the present application, the second driving component includes:

[0017] a toothed portion, the toothed portion being arranged at one end of the cutting blade head, the other end of the cutting blade head being arranged with the blade portion, and the cutting blade head being hinged to the cutting blade body;

[0018] A driving gear is meshed with the toothed portion, and the driving gear reciprocates to cause the cutting blade to swing reciprocally.

[0019] As a further improvement of the implementation manner of the present application, the driving mechanism includes:

[0020] A first driving assembly is used to drive the cutting head to rotate unidirectionally relative to the cutting blade body to perform angular cutting.

[0021] As a further improvement of the implementation manner of the present application, the first driving component includes:

[0022] A gear connected to the cutting head;

[0023] a rack extending along the target direction, the gear meshing with the rack;

[0024] A first driving member is connected to the cutting blade body, and the first driving member drives the cutting blade body and the cutting head to move linearly along the rack.

[0025] As a further improvement of the implementation manner of the present application, the first driving component further includes:

[0026] A first motor, wherein the first motor comprises a motor shaft, and the motor shaft is connected to the cutting head to drive the cutting head to rotate;

[0027] A second driving member is connected to the cutting blade body, and the second driving member drives the cutting blade body and the cutting head to move along the target direction.

[0028] Based on the same purpose, a stapler is also proposed, comprising:

[0029] A stapling structure, comprising a staple cartridge seat, an anastomosis seat, and a plurality of staples;

[0030] The staple cartridge seat is provided with a plurality of staple grooves for placing the staples, and a knife pusher groove is provided along the length direction of the staple cartridge seat;

[0031] The nail magazine seat can move toward the nail support seat to fix the target cutting tissue;

[0032] A cutting structure, wherein the cutting blade body and the cutting blade head can move along the blade pushing groove;

[0033] The nail pushing mechanism comprises a nail pushing plate, which is connected to one end of the cutting assembly close to the cutting head. When the cutting assembly and the nail pushing plate move along the pushing groove, the staples are pushed out of the staple groove.

[0034] Based on the same purpose, a stapler system is also proposed, comprising:

[0035] An electric switch, after the electric switch is closed, the electric switch sends a staple cutting command;

[0036] A control module, the control module receiving the anastomosis cutting command;

[0037] The control module drives the staple cartridge seat to press against the anvil seat, so as to fix the target cutting tissue between the staple cartridge seat and the anvil seat;

[0038] The control module controls the driving mechanism to start, and the driving mechanism drives the cutting assembly to move along the target direction, and drives the cutting blade and the cutting head to move relative to each other to perform angular cutting to cut the target cutting tissue; the cutting assembly drives the nail pushing plate to push the staples out of the staple groove to anastomose the target cutting tissue.

[0039] Compared with the prior art, the cutting structure of the stapler according to the present application has the following advantages:

[0040] The cutting blade and the cutting head are driven by a driving mechanism, so that while the cutting assembly cuts in a straight line in the target direction, the cutting head also moves relative to the cutting blade, and the blade of the cutting head cuts the tissue at an angle. The angular cutting of the cutting head can improve the cutting effect, avoid the target cutting tissue from being torn under the pressure of the cutting head, reduce the damage to the blade during the cutting process, and improve the safety during the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is a schematic diagram of the overall structure of a stapler according to an embodiment of the present application;

[0042] Figure 2 yes Figure 1 Cross-sectional view at AA in the middle;

[0043] Figure 3 is a schematic diagram of a partial internal structure of a stapler according to an embodiment of the present application;

[0044] Figure 4 Figure 3 Enlarged view of point E in the middle;

[0045] Figure 5 is a partial structural diagram of a cutting assembly of a stapler according to an embodiment of the present application;

[0046] Figure 6 is a side view of a cutting blade according to an embodiment of the present application;

[0047] Figure 7 is a schematic structural diagram of a cutting blade according to an embodiment of the present application;

[0048] Figure 8 is a schematic structural diagram of a cutting assembly of a stapler according to an embodiment of the present application;

[0049] Fig. 9 yes Figure 8 Cross-section at the middle BB;

[0050] Fig.10 is a partial structural schematic diagram of a driving structure of a stapler according to an embodiment of the present application;

[0051] Fig.11 is a partial structural schematic diagram of a stapling structure according to an embodiment of the present application;

[0052] Fig.12 yes Fig.11 Cross-sectional view at CC.

[0053] Description of main reference numerals:

[0054] 1. Stapler; 10. Cutting structure; 2. Cutting assembly; 21. Cutting blade; 211. Mounting portion; 212. Mounting hole; 213. Connecting pin; 22. Cutting head; 221. Blade portion; 222. Through hole; 223. Protrusion; 30. First driving member / second driving member; 31. Gear; 32. Rack; 33. Second motor; 34. Screw; 35. Threaded sleeve; 36. Transmission rod; 361. Matching portion; 4. Stapling structure; 41. Staples; 42. Staple magazine seat; 421. Push knife groove; 43. Staple support seat. DETAILED DESCRIPTION

[0055] In order to make the objectives, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below in combination with specific implementation methods and with reference to the accompanying drawings.

[0056] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the embodiments of the present application should be understood by people with ordinary skills in the field to which the present application belongs. The "first", "second" and similar words used in the embodiments of the present application do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0057] like Figure 1 , Figure 5 and Figure 8 As shown, a cutting structure 10 of a stapler 1 according to one embodiment of the present application includes: a cutting assembly 2, the cutting assembly 2 includes a cutting blade body 21 and a cutting head 22, the cutting head 22 is provided with a blade portion 221, and the blade portion 221 cuts the target cutting tissue.

[0058] The cutting structure 10 also includes a driving mechanism, which is connected to the cutting component 2 and is used to drive the cutting component 2 to perform linear cutting along a target direction. The target direction is the direction of the trajectory that needs to be cut on the target cutting tissue. The cutting blade 21 and the cutting head 22 in the cutting component 2 move together along the target direction. During the movement, the blade 221 cuts the target cutting tissue; the driving mechanism also drives the cutting blade 21 and the cutting head 22 to move relative to each other, and the cutting head 22 rotates, thereby performing angular cutting on the target cutting tissue.

[0059] During the cutting process, the cutting head 22 simultaneously moves in a straight line in the target direction, and the blade 221 on the cutting head 22 has an angular displacement relative to the target direction to achieve cutting of the target cutting tissue. The angular cutting force of the cutting head 22 is compared with the extrusion cutting force in the prior art, and can improve the cutting effect, avoid the target cutting tissue from being torn under the extrusion cutting force of the cutting head, and reduce the damage to the blade during the cutting process, thereby improving the safety during the operation.

[0060] like Figure 5 and Fig. 9 As shown, in a specific embodiment, the cutting assembly 2 includes two cutting heads 22, the two cutting heads 22 are symmetrically arranged along the cutting blade body 21, the two cutting heads 22 are arranged in parallel and a cutting gap is formed between the two cutting heads 22. The cutting blade body 21 is located between the two cutting heads 22, and the blade portion 221 of the cutting head 22 facing the target direction needs to exceed the projection area of ​​the cutting blade body 21 in order to apply a cutting force to the target cutting tissue, so the two cutting heads 22 have an excess portion that exceeds the projection area of ​​the cutting blade body 21, and a cutting gap is formed between the excess portions of the two cutting heads 22.

[0061] It should be noted that during the entire cutting process, a high requirement is placed on the tensile strength of the cutting head 22. When the material of the cutting head 22 is fixed, the thicker the cutting head 22, the higher the tensile strength. For example, if the blade 221 of the cutting head 22 is located in the middle of the cutting head 22, the thickness of the cutting head 22 needs to increase with the length of the blade 221, which will take up a large amount of space, increase the manufacturing difficulty, and form a stress concentration point at the tip of the blade 221. From the cutting head 22 body to the tip of the blade 221, the thickness of the cutting head 22 decreases sharply, which reduces the tensile performance and makes the cutting head 22 prone to breakage. Therefore, two cutting heads 22 are provided, symmetrically arranged on both sides of the cutting blade body 21, and a thinner cutting head 22 is used, with the blade 221 distributed on the edge of the cutting head 22, to ensure that the cutting head 22 meets the tensile performance and to ensure the balance of force applied during the cutting process.

[0062] Specifically, the relative surfaces of the cutting blade body 21 and the cutting head 22 are connected with each other in a clearance fit, so as to ensure that the cutting head 22 can freely move relative to the cutting blade body 21 .

[0063] Specifically, Figure 8 and Fig. 9 As shown, a mounting portion 211 is provided on the cutting blade body 21, a mounting hole 212 is opened on the mounting portion 211, and a through hole 222 is provided in the axial direction of the cutting head 22. A connecting pin 213 is passed through the mounting hole 212 and the through hole 222 to realize a movable connection between the cutting blade body 21 and the cutting head 22, thereby ensuring that when the cutting blade body 21 moves, the cutting head 22 moves with the cutting blade body 21, and the cutting head 22 can also make angular displacement relative to the cutting blade body 21.

[0064] In order to achieve angular cutting of the cutting head 22, in a specific embodiment, the driving mechanism includes a first driving component, which drives the cutting head 22 to rotate unidirectionally relative to the cutting blade body 21 to perform angular cutting. The cutting head 22 continuously performs angular cutting on the target cutting tissue by rotating, thereby ensuring the continuity of angular cutting during the straight-line movement of the cutting tissue and improving the cutting efficiency.

[0065] Specifically, the cross section of the cutting head 22 perpendicular to the axial direction is circular, and the blade 221 extends along the edge of the cutting head 22. During the rotation of the cutting head 22, the blade 221 continuously performs angular cutting with respect to the target direction.

[0066] In a specific embodiment, Figure 3 , Figure 4 As shown, the first driving assembly includes a gear 31, a rack 32 and a first driving member 30. The rack 32 extends in the target direction, the gear 31 is meshed with the rack 32, the first driving member 30 is connected to the cutting blade 22, and the first driving member 30 drives the cutting blade 21 and the cutting head 22 to move linearly. The cutting head 22 is connected to the gear 31. When the cutting head 22 moves linearly, it drives the gear 31 to move linearly. At the same time, the gear 31 is also meshed with the rack 32, so the linear movement of the gear 31 proceeds along the rack 32. In this process, due to the meshing of the gear 31 and the rack 32, the gear 31 rotates itself, and the gear 31 drives the cutting head 22 to rotate together, thereby realizing angular cutting of the cutting head 22.

[0067] By utilizing the meshing of the gear 31 and the rack 32, the cutting head can simultaneously perform linear motion and rotation without the need for additional power input, thereby converting extrusion cutting into angular cutting, improving the cutting effect, avoiding damage to the blade 221 during surgery, and improving safety during surgery.

[0068] Furthermore, the axes of the gear 31 and the cutting head 22 coincide with each other, so that the cutting head 22 and the gear 31 rotate at the same angular velocity. The rotation speed of the cutting head 22 can be controlled by controlling data such as the number of teeth and / or module of the gear 31 and the rack 32.

[0069] Further, such as Figure 6 and Figure 7 As shown, the side surface of the gear 31 fits with the side surface of the cutting head 22, and the gear 31 and the cutting head 22 are fixedly connected by welding or bonding, or the gear 31 and the cutting head 22 are an integrated structure.

[0070] In a specific embodiment, the two cutting heads 22 are symmetrically arranged on both sides of the cutting body 21, and the gear 31 is arranged on the side of the cutting head 22 away from the cutting body 21. Therefore, the rack 32 is also arranged on the side of the cutting head 22 away from the cutting body 21. When the cutting body 21 moves along the rack 32, it does not interact with the rack 32, thereby ensuring the stability of the moving process.

[0071] In another specific embodiment, the first drive component includes a first motor, the first motor includes a motor shaft, the motor shaft is connected to the cutting head 22 to drive the rotation of the cutting head 22, and a second drive member 30 is provided, the second drive member 30 is connected to the cutting body 21, and when the second drive member 30 drives the cutting body 21 to move in the target direction, the cutting head 22 moves along the target direction with the cutting body 21.

[0072] The first motor is used as the driving source for the rotation of the cutting head 22, and the second driving member 30 is used as the driving source for the linear motion of the cutting head 22. The rotation speed of the cutting head 22 can be controlled independently, and has good adaptability when cutting target cutting tissues of various hardness and structures.

[0073] In order to achieve angular cutting of the cutting head 22, in another specific embodiment, the driving mechanism includes a second driving assembly, which is used to drive the cutting head 22 to reciprocate relative to the cutting body. The blade 221 of the cutting head 22 makes reciprocating angular displacement relative to the target direction to cut the target cutting tissue.

[0074] In a specific embodiment, the second driving component includes a toothed portion and a driving gear. The toothed portion is arranged at one end of the cutting head 22, and a blade portion 221 is arranged at the other end of the cutting head 22. The driving gear is engaged with the toothed portion. The driving gear rotates reciprocatingly, and the toothed portion engaged with it also moves repeatedly on the driving gear. The cutting head 22 is hinged to the cutting blade 21. When the toothed portion rotates repeatedly, the cutting head 22 repeatedly swings in the direction with the hinge point as the center, so that the blade portion 221 makes reciprocating angular displacement.

[0075] Specifically, the third motor causes the driving gear to reciprocate, or a handle is provided, the handle is connected to the driving gear, and the operator manually controls the reciprocating movement of the handle.

[0076] In a specific embodiment, Figure 8 and Fig.10 As shown, the driving mechanism includes a second motor 33, a screw rod 34, a threaded sleeve 35 and a transmission rod 36, the second motor 33 is connected to the threaded sleeve 35, the threaded sleeve 35 is sleeved on the screw rod 34 and cooperates with the thread of the screw rod 34, the second motor 33 drives the threaded sleeve 35 to rotate, the threaded sleeve 35 drives the screw rod 34 to move linearly, and the screw rod 34 drives the transmission rod 36 to move linearly; the driving mechanism also includes a screw, one end of the screw rod 34 is provided with an expansion portion, one end of the transmission rod 36 is provided with a recess, the expansion portion is sleeved with the recess, the screw passes through the side walls of the expansion portion and the recess, so that the screw rod 34 is fixedly connected to the transmission rod 36; the other end of the transmission rod 36 is provided with a matching portion 361, one end of the cutting blade 21 is provided with a protrusion 223, the matching portion 361 and the protrusion 223 are engaged, so that the transmission rod 36 and the cutting blade 21 are fixedly connected in the linear movement direction, and the transmission rod 36 drives the cutting blade 21 to move linearly. Under electric drive, the cutting component 2 realizes the cutting process on the target cutting tissue, with a simple structure and high reliability.

[0077] During the cutting process, cutting is applied from the starting point to the end point of the expected cutting trajectory of the target cutting tissue. Driven by the second motor 33, the cutting blade 21 moves from the starting point to the end point, and the cutting head 22 that moves therewith performs cutting.

[0078] On the other hand, the present application also proposes a stapler 1, such as Figure 1 , Figure 2 , Fig.11 and Fig.12 As shown, the stapler 1 includes a staple structure 4, a cutting structure 10 and a staple pushing mechanism. Figure 2 , Fig.11 and Fig.12 As shown, the stapling structure 4 includes a plurality of staples 41, a staple cartridge seat 42 and an anvil seat 43. The staple cartridge seat 42 is provided with a plurality of staple grooves for placing the staples 41. A pusher groove 421 is provided along the length direction of the staple cartridge seat 42. The staple cartridge seat 42 can move toward the anvil seat 43 to clamp and fix the target cutting tissue. The cutting blade 21 and the cutting blade head 22 can move along the pusher groove 421. The staple pushing mechanism includes a staple pushing plate, which is connected to one end of the cutting assembly 2 close to the cutting blade head 22. When the cutting assembly 2 and the staple pushing plate move along the pusher groove 421, the staples 41 are pushed out of the staple grooves. Fig.11 and Fig.12 The X direction shown in FIG. 1 is the length direction.

[0079] During the use of the stapler 1, first, the staple magazine seat 42 and the staple support seat 43 fix the target cutting tissue in the length direction, determine the cutting direction of the tissue as the target direction, and point the cutting component 2 in the cutting structure 10 toward the target direction, drive the cutting blade 21 and the cutting head 22 to move along the target direction, and at the same time, the cutting head 22 makes an angular displacement toward the target direction to achieve cutting of the target cutting tissue. During the cutting process, the staple pusher plate moves in a straight line with the cutting component 2, and interacts with the stapler 41 during the movement, thereby pushing the stapler 41, causing the stapler 41 to emerge from the staple groove, closing the fixed target cutting tissue, and achieving the purpose of removing the lesion.

[0080] In a specific embodiment, the staples 41 are parallel to the height direction of the staple cartridge seat 42, and the staple slot is a structure that is open from top to bottom, and a portion of the staples 41 is exposed at the bottom of the staple slot. With the advancing direction during the staple operation as the front end, the staple pusher plate includes a sloped plate surface, the height of which gradually increases from the front end to the rear end, and when the staple pusher plate advances, the sloped plate surface lifts the staples 41, thereby pushing the staples 41 out of the staple slot.

[0081] In a specific embodiment, the stapler 1 also includes a body, the stapling structure 4 is installed at the operating end of the body, the cutting assembly 2 and part of the driving mechanism are located inside the body near the operating end, and during the cutting process, the driving mechanism drives the cutting assembly 2 to move from the inside of the body to the stapling structure 4, and the cutting head 22 is located at the end of the cutting body 21 closer to the stapling structure 4, and the cutting head 22 performs cutting at the front end of the moving direction of the cutting assembly 2.

[0082] Specifically, the first driving component in the driving mechanism is a gear 31 and a rack 32. The rack 32 is installed in the stapling structure 4 and extends along the length direction of the stapling structure 4, so that in subsequent driving, the cutting guide head can cut along the length direction of the stapling structure 4.

[0083] On the other hand, the present application also proposes a stapler system, including an electric switch and a control module. The electric switch and the control module are communicatively connected. After the electric switch is closed, the electric switch sends a staple cutting command to the control module. After the control module receives the staple cutting command, the control module first drives the staple magazine seat 42 to move toward the staple support seat 43, clamps the target cutting tissue between the staple magazine seat 42 and the staple support seat 43, and fixes the target cutting tissue; then the control module turns on the driving mechanism, and the driving mechanism drives the cutting assembly 2 to move in the target direction, and drives the relative movement between the cutting blade 21 and the cutting head 22 to perform angular cutting to cut the target cutting tissue; the cutting assembly 2 drives the staple pusher plate to push the staple 41 out of the staple groove to staple the target cutting tissue.

[0084] During the anastomosis operation, the operator first aligns the staple cartridge seat 42 and the staple anvil seat 43 with the target cutting tissue, then closes the electric switch, and the control module starts to drive the staple cartridge seat 42 to move toward the staple anvil seat 43 to fix the target cutting tissue. Then, the driving mechanism drives the cutting assembly 2, and the cutting blade 22 and the cutting blade body 21 move along the target cutting tissue in a straight line, while the cutting blade 22 performs angular cutting to achieve cutting of the target cutting tissue. During the movement of the cutting assembly 2, the staple pusher plate moves accordingly, pushing out the staples 41, and achieving anastomosis of the target cutting tissue.

[0085] The foregoing descriptions of specific exemplary embodiments of the present application have been presented for purposes of illustration and description.

[0086] These descriptions are not intended to limit the present application to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the present application and its practical application, so that those skilled in the art can realize and utilize the various exemplary embodiments and various selections and changes of the present application. The scope of the present application is intended to be limited by the claims and their equivalents.

Claims

1. A cutting structure of a stapler, characterized in that: include: A cutting assembly, the cutting assembly comprising a cutting blade body and a cutting blade head, the cutting blade head being provided with a blade portion; A driving mechanism is connected to the cutting assembly, and is used to drive the cutting assembly to perform linear cutting along a target direction and simultaneously drive the cutting head to perform rotational motion.

2. The cutting structure of the stapler according to claim 1, characterized in that: The driving mechanism includes a second motor, a threaded sleeve, a screw and a transmission rod, wherein the second motor is connected to the threaded sleeve, the threaded sleeve is arranged on the screw and cooperates with the screw thread, the second motor drives the threaded sleeve to rotate, the threaded sleeve drives the screw to move linearly, and the screw drives the transmission rod to move linearly; The driving mechanism further comprises: a screw, one end of the screw rod is provided with an outward expansion portion, one end of the transmission rod is provided with a recessed portion, the outward expansion portion is sleeved with the recessed portion, the screw passes through the outward expansion portion and the side wall of the recessed portion, so that the screw rod is fixedly connected to the transmission rod; The other end of the transmission rod is provided with a matching portion, and one end of the cutting blade is provided with a protruding portion. The matching portion is engaged with the protruding portion, so that the transmission rod and the cutting blade are fixedly connected in the linear movement direction, and the transmission rod drives the cutting blade to move linearly.

3. The cutting structure of the stapler according to claim 1, characterized in that: The cutting assembly comprises two cutting heads, and the two cutting heads are symmetrically arranged along the cutting blade body; The two cutting heads are arranged in parallel and a cutting gap is formed between the two cutting heads; The opposing surfaces of the cutting blade head and the cutting blade body are connected by clearance fit.

4. The cutting structure of the stapler according to claim 1, characterized in that: The driving mechanism comprises: A second drive assembly is used to drive the cutting head to reciprocate relative to the cutting blade body to perform angular cutting.

5. The cutting structure of the stapler according to claim 4, characterized in that: The second driving assembly comprises: a toothed portion, the toothed portion being arranged at one end of the cutting blade head, the other end of the cutting blade head being arranged with the blade portion, and the cutting blade head being hinged to the cutting blade body; A driving gear is meshed with the toothed portion, and the driving gear reciprocates to cause the cutting blade to swing reciprocally.

6. The cutting structure of the stapler according to claim 1, characterized in that: The driving mechanism comprises: A first driving assembly is used to drive the cutting head to rotate unidirectionally relative to the cutting blade body to perform angular cutting.

7. The cutting structure of the stapler according to claim 6, characterized in that: The first driving assembly comprises: A gear connected to the cutting head; a rack extending along the target direction, the gear meshing with the rack; A first driving member is connected to the cutting blade body, and the first driving member drives the cutting blade body and the cutting head to move linearly along the rack.

8. The cutting structure of the stapler according to claim 7, characterized in that: The first drive assembly also includes: A first motor, wherein the first motor comprises a motor shaft, and the motor shaft is connected to the cutting head to drive the cutting head to rotate; A second driving member is connected to the cutting blade body, and the second driving member drives the cutting blade body and the cutting head to move along the target direction.

9. A stapler, characterized in that: include: A stapling structure, comprising a staple cartridge seat, an anastomosis seat, and a plurality of staples; The staple cartridge seat is provided with a plurality of staple grooves for placing the staples, and a knife pusher groove is provided along the length direction of the staple cartridge seat; The nail magazine seat can move toward the nail support seat to fix the target cutting tissue; The cutting structure according to any one of claims 1 to 8, wherein the cutting blade body and the cutting blade head can move along the blade pushing groove; The nail pushing mechanism comprises a nail pushing plate, which is connected to one end of the cutting assembly close to the cutting head. When the cutting assembly and the nail pushing plate move along the pushing groove, the staples are pushed out of the staple groove.

10. A stapler system, characterized in that: include: An electric switch, after the electric switch is closed, the electric switch sends a staple cutting command; A control module, the control module receiving the anastomosis cutting command; The control module drives the staple cartridge seat to press against the anvil seat, so as to fix the target cutting tissue between the staple cartridge seat and the anvil seat; The control module controls the driving mechanism to start, and the driving mechanism drives the cutting assembly to move along the target direction, and drives the cutting blade body and the cutting blade head to move relative to each other to perform angular cutting, so as to cut the target cutting tissue; The cutting assembly drives the nail pushing plate to push the anastomotic nail out of the nail slot to anastomose the target cutting tissue.

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