Anastomat wobble mechanism and anastomat

Abstract

The application provides an anastomat swing head mechanism and an anastomat. In order to solve the problems that the joint of the jaw part of the existing swing head anastomat is easy to shake when the angle is 0 degrees and the jaw part has a residual angle when the swing head knob is reset to 0 degrees, the technical scheme of the application is to provide an anastomat swing head mechanism, which comprises a fixing block, a sleeve rod, a swing head control element, a reset control element, a first reset elastic element and a second reset elastic element. The reset control element, the two reset elastic elements and the sleeve rod are designed in cooperation, so that the angle deviation can be corrected when the swing head is reset, the efficiency of the repeated use of the anastomat is improved, the rigidity of the joint is improved, the jaw part is not easy to shake, the stability is improved, the doctor is facilitated to quickly insert the puncture device, and the predetermined tissue part can be more accurately clamped during anastomosis.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology, and particularly relates to a stapler swing head mechanism and a stapler. Background Technology

[0002] Anastomosing devices are medical alternatives to manual suturing. Their main working principle is to use titanium staples to sever or anastomose tissue, similar to a stapler. Some anastomosing devices have a swing-head function, with a joint at the head that allows left and right rotation, such as laparoscopic linear cutting anastomosing devices. The swing direction and angle of the head are controlled by a swing-head knob. However, existing anastomosing devices with swing-head functions generally lack rigidity at the joint of the head, resulting in slight head wobbling when the swing angle is 0°. Furthermore, after the anastomosing device is fired in the swing-head state, the internal pusher blade undergoes permanent deformation. When the swing-head knob returns to 0°, the anastomosing head will still have a certain residual angle and cannot fully return to its original position. For anastomosing devices with replaceable staple cartridges, this affects subsequent angle adjustments and hinders the surgeon's operations, such as inserting trocars and accurately clamping tissue. Summary of the Invention

[0003] The purpose of this invention is to provide a stapler head mechanism that can reduce the angular deviation that occurs when the stapler head resets and improve the stability of the head at 0°.

[0004] Another object of the present invention is to provide a stapler having the above-described stapler tilting mechanism.

[0005] To achieve the above objectives, the technical solution adopted by the present invention is as follows:

[0006] A stapler tilting head mechanism, comprising:

[0007] Fixed block,

[0008] A sleeve rod has a space inside for installing a pusher assembly. The distal end of the sleeve rod is rotatably connected to the fixed block via a connector. A first groove extending from its distal end to its proximal end is formed on one side wall of the sleeve rod. A second groove extending from its distal end to its proximal end but not reaching its proximal end is formed on the other side wall of the sleeve rod. A first protrusion, a second protrusion, and a third protrusion are provided in the second groove, which are spaced apart in the extension direction of the second groove.

[0009] A swing head control component is slidably disposed in the first groove, the distal end of the swing head control component is rotatably connected to one side of the fixed block, and the proximal end of the swing head control component extends out of the proximal end of the sleeve rod.

[0010] A reset control element is slidably disposed in the second groove. The distal end of the reset control element is rotatably connected to the other side of the fixed block. The middle part of the reset control element is recessed to form a receiving groove, and its proximal end forms a fourth protrusion.

[0011] A reset elastic element includes a first reset elastic element and a second reset elastic element disposed in the second groove. The first reset elastic element is disposed between the first protrusion and the second protrusion, and a portion of the first reset elastic element is located in the receiving groove. The second reset elastic element is disposed between the second protrusion and the third protrusion.

[0012] The stapler tilting mechanism includes a first working state, a second working state, and a third working state.

[0013] When the anastomosis device swing head mechanism is in the first working state, when the distal end of the swing head control member is aligned with the distal end of the reset control member, the first reset elastic member and the second reset elastic member respectively abut against the fourth protrusion.

[0014] When the anastomosis device swing head mechanism is in the second working state, the distal end of the reset control member extends out of the distal end of the swing head control member, the fourth protrusion is located between the first protrusion and the second protrusion, the first reset elastic member abuts against the fourth protrusion and the first reset elastic member always has a tendency to extend towards the second protrusion.

[0015] When the anastomosis device swing head mechanism is in the third working state, the distal end of the swing head control member extends beyond the distal end of the reset control member, the fourth protrusion is located between the second protrusion and the third protrusion, the second reset elastic member (52) abuts against the fourth protrusion and the second reset elastic member always has a tendency to extend towards the second protrusion.

[0016] According to some specific embodiments, the width of the fourth protrusion in the direction parallel to the axis of the sleeve is greater than or equal to the width of the second protrusion in the direction parallel to the axis of the sleeve.

[0017] When the anastomosis device swing head mechanism is in the first working state, when the distal end of the swing head control member is aligned with the distal end of the reset control member, the axis of the fixing block and the axis of the sleeve rod are collinear, the fourth protrusion is close to the second protrusion, the distal end of the first reset elastic member abuts against the first protrusion, the proximal end of the first reset elastic member abuts against the fourth protrusion, the distal end of the second reset elastic member abuts against the fourth protrusion, and the proximal end of the second reset elastic member abuts against the third protrusion.

[0018] When the anastomosis device swing head mechanism is in the second working state, the distal end of the reset control member extends beyond the distal end of the swing head control member, the axis of the fixing block intersects the axis of the sleeve rod, the fourth protrusion is located between the first protrusion and the second protrusion, the distal end of the first reset elastic member abuts against the first protrusion, the proximal end of the first reset elastic member abuts against the fourth protrusion, the distal end of the second reset elastic member abuts against the second protrusion, and the proximal end of the second reset elastic member abuts against the third protrusion.

[0019] When the anastomosis device swing head mechanism is in the third working state, the distal end of the swing head control member extends beyond the distal end of the reset control member, the axis of the fixing block intersects the axis of the sleeve rod, the fourth protrusion is located between the second protrusion and the third protrusion, the distal end of the first reset elastic member abuts against the first protrusion, the proximal end of the first reset elastic member abuts against the second protrusion, the distal end of the second reset elastic member abuts against the fourth protrusion, and the proximal end of the second reset elastic member abuts against the third protrusion.

[0020] Preferably, the distal end of the head-swinging control component is provided with a first strip-shaped hole, the extension direction of the first strip-shaped hole is perpendicular to the axis of the fixing block, and the fixing block is provided with a first connecting post, which is movably inserted into the first strip-shaped hole.

[0021] Preferably, the distal end of the reset control component is provided with a second strip-shaped hole, the extension direction of the second strip-shaped hole is perpendicular to the axis of the fixing block, and the fixing block is provided with a second connecting post, which is movably inserted into the second strip-shaped hole.

[0022] More preferably, the fixing block includes an upper fixing block and a lower fixing block, one side of the upper fixing block and the lower fixing block are connected by the first connecting post, and the other side of the upper fixing block and the lower fixing block are connected by the second connecting post.

[0023] More preferably, the sleeve rod includes a separate upper half and a lower half, the distal end of the upper half is rotatably connected to the upper fixed block via a first connector, and the distal end of the lower half is rotatably connected to the lower fixed block via a second connector.

[0024] In a further preferred embodiment, the first groove is formed on one side of the upper half and the lower half, and the second groove is formed at the far end of the other side of the upper half and the lower half, with the proximal ends of the other side of the upper half and the lower half engaging with each other.

[0025] In some embodiments, the first protrusion, the second protrusion, and the third protrusion are respectively disposed in the lower half and / or the upper half.

[0026] Preferably, the anastomosis device swing head mechanism further includes a sleeve sleeved outside the sleeve rod, the swing head control member, the reset control member, and the reset elastic member.

[0027] More preferably, the sleeve is made of metal.

[0028] More preferably, the sleeve is made of plastic.

[0029] More preferably, the anastomosis device swing head assembly further includes a swing head knob disposed at the proximal end of the cannula and a drive mechanism disposed within the cannula connecting the swing head knob and the proximal end of the swing head control member, wherein the swing head knob drives the swing head control member to move via the drive mechanism.

[0030] Preferably, the distance between the first bump and the second bump is equal to the distance between the second bump and the third bump.

[0031] According to some embodiments, the first reset elastic element and the second reset elastic element are springs.

[0032] 3. The present invention also provides a stapler, which includes the above-mentioned stapler swing head mechanism, a clamp head disposed on the fixed block, a pusher assembly, a firing assembly, and a staple cartridge.

[0033] Preferably, the clamp head includes an anvil and a staple cartridge seat, which are hinged together.

[0034] Due to the application of the above-mentioned technical solution, the present invention has the following advantages compared with the prior art:

[0035] The stapler's swing head mechanism of this invention improves the rigidity of the joint at 0°, making the clamp head less prone to wobbling, thus enhancing stability and facilitating rapid insertion by the surgeon. It also allows for more accurate clamping of the intended tissue site during anastomosis. When the stapler resets after firing in the swing head state, it corrects any angular deviation that occurs after reset, improving the efficiency of the stapler's reusability. Attached Figure Description

[0036] Figure 1 This is a partial structural diagram of the anastomosis device for an embodiment (the proximal firing assembly is hidden);

[0037] Figure 2 This is a partial structural diagram of the anastomosis device for an embodiment from another perspective (proximal firing assembly is hidden);

[0038] Figure 3 A partial structural diagram of the anastomosis device for an embodiment from another perspective (the proximal firing assembly and cannula are hidden);

[0039] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0040] Figure 5 This is a partial top view of the anastomosis device in the embodiment when the head is tilted at 0° (the upper half of the proximal firing assembly, sleeve, and sleeve rod are hidden).

[0041] Figure 6 A partial top view of the anastomosis device in an embodiment at a 55° head angle (the upper half of the proximal firing assembly and the sleeve are hidden);

[0042] Figure 7 This is a schematic diagram showing the relationship between some components of the stapler in the embodiment when the head is tilted at 55°.

[0043] Figure 8 for Figure 7 A schematic diagram showing the relationship between some components (hidden) Figure 7 (Upper fixed block in the middle);

[0044] Figure 9 This is a schematic diagram of the structure of some components of the stapler in the first working state according to the embodiment;

[0045] Figure 10 This is a schematic diagram of the structure of some components of the stapler in the second working state according to the embodiment;

[0046] Figure 11 This is a schematic diagram of the structure of some components of the stapler in the third working state according to the embodiment.

[0047] In the above image,

[0048] 11. Upper fixing block; 12. Lower fixing block; 21. Upper half; 22. Lower half; 221. First protrusion; 222. Second protrusion; 223. Third protrusion; 3. Swing head control component; 31. First strip hole; 4. Reset control component; 41. Fourth protrusion; 42. Second strip hole; 51. First reset elastic component; 52. Second reset elastic component (52); 61. First connecting post; 62. Second connecting post; 71. First connecting component; 8. Pliers head; 9. Sleeve. Detailed Implementation

[0049] To address the issues of existing oscillating staplers where the forceps head at 0° is prone to wobbling, insufficient rigidity hinders insertion of the trocar and tissue clamping, and residual angles after firing in the oscillating state due to blade bending, preventing complete return to 0° when the oscillating knob is reset, this invention utilizes the internal space of a metal sleeve to add a reset control and two reset elastic elements at the forceps head joint (between the fixing block and the sleeve). A protruding stop is provided on the sleeve to allow the reset control and the two reset elastic elements to cooperate, correcting angular deviation during oscillation reset and improving joint rigidity. Furthermore, the design of the connection between the oscillating and reset control elements and the fixing block ensures a 55° oscillation angle while improving sensitivity, reducing effort during operation, and preventing bending of the oscillating and reset control elements.

[0050] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the embodiments of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0051] In the description of this invention, it should be understood that the terms "upper," "lower," "far end," and "proximal end," etc., used herein are based on... Figure 1 and Figure 4 The description focuses on the positional relationships. "Inner" and "outer" are defined by their distance from the center of the instrument or component, with "inner" being the position closer to the center and "outer" being the position farther from the center. "Distal" and "proximal" are described from the operator's perspective, with the end closest to the operator considered the distal end. The above directional terms are used only for the convenience of describing embodiments of the invention and for simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on the embodiments of the invention.

[0052] In the description of this invention, "swing angle" refers to the angle at which the fixed block drives the jaws (also called the jaws) to rotate relative to the sleeve. Specifically, "swing 0°" means that the jaws are not swaying, and the axis of the fixed block and the straight line containing the jaws coincide with or are parallel to the axis of the sleeve; "swing 55°" is the maximum angle of the jaws, where the angle between the axis of the fixed block, the straight line containing the jaws, and the axis of the sleeve is 55°.

[0053] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "fixed," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this invention according to the specific circumstances.

[0054] As described below, various structures of the embodiments of the present invention can be implemented through many different implementation methods or examples. To simplify the disclosure of the embodiments of the present invention, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the embodiments of the present invention.

[0055] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0056] Example

[0057] This embodiment provides a stapler, which includes a clamp head 8, a stapler swinging mechanism, a pusher assembly, a firing assembly, and a staple cartridge.

[0058] like Figures 1 to 8 As shown, the anastomosis device swing head mechanism includes a fixed block, a sleeve, a swing head control component 3, a reset control component 4, a reset elastic component, and a sleeve 9.

[0059] Specifically, the fixing block includes an upper fixing block 11 and a lower fixing block 12. One side of the upper fixing block 11 and the lower fixing block 12 are connected by a first connecting post 61, and the other side of the upper fixing block 11 and the lower fixing block 12 are connected by a second connecting post 62. The clamp head 8 is fixedly connected to the upper fixing block 11 and the lower fixing block 12 respectively, and the connection point is located between the first connecting post 61 and the second connecting post 62.

[0060] Specifically, the sleeve has a space inside for installing the pusher assembly. The sleeve includes a separate upper half 21 and a lower half 22. The distal end of the upper half 21 is rotatably connected to the upper fixing block 11 via a first connector 71, and the distal end of the lower half 22 is rotatably connected to the lower fixing block 12 via a second connector. A first groove extending from the distal end to the proximal end of one side of the upper half 21 and the lower half 22 forms a second groove extending from the distal end to the proximal end of the sleeve, but not reaching the proximal end. The proximal ends of the other side of the upper half 21 and the lower half 22 are interlocked. The first and second grooves are distributed on opposite sides of the sleeve. The second groove contains a first protrusion 221, a second protrusion 222, and a third protrusion 223 spaced apart in the extending direction of the second groove, and the distance between the first protrusion 221 and the second protrusion 222 is equal to the distance between the second protrusion 222 and the third protrusion 223.

[0061] Specifically, the oscillating head control component 3 is slidably disposed in the first groove. The distal end of the oscillating head control component 3 is rotatably connected to one side of the fixed block, and the proximal end of the oscillating head control component 3 extends out of the proximal end of the sleeve rod. The distal end of the oscillating head control component 3 is provided with a first strip hole 31, the extension direction of the first strip hole 31 being perpendicular to the axis of the fixed block. The fixed block is provided with a first connecting post 61, which is movably inserted into the first strip hole 31.

[0062] Specifically, the reset control member 4 is slidably disposed in the second groove. The distal end of the reset control member 4 is rotatably connected to the other side of the fixed block. The middle part of the reset control member 4 is recessed to form a receiving groove, and its proximal end forms a fourth protrusion 41. The width of the fourth protrusion 41 in the direction parallel to the axis of the sleeve is slightly greater than the width of the second protrusion 222 in the direction parallel to the axis of the sleeve. The distal end of the reset control member 4 is provided with a second strip hole 42. The extension direction of the second strip hole 42 is perpendicular to the axis of the fixed block. The fixed block is provided with a second connecting post 62, which is movably inserted into the second strip hole 42.

[0063] Specifically, the reset elastic element includes a first reset elastic element 51 and a second reset elastic element 52 disposed in the second groove. The first reset elastic element 51 is disposed between the first protrusion 221 and the second protrusion 222, with a portion of the first reset elastic element 51 located in the receiving groove. The second reset elastic element 52 is disposed between the second protrusion 222 and the third protrusion 223. In this embodiment, the first reset elastic element 51 and the second reset elastic element 52 are reset springs of equal length, preferably compression springs.

[0064] In this embodiment, the clamp head 8, the pusher assembly, the firing assembly, and the nail box all adopt conventional designs in the art and can be assembled using existing components, which will not be described in detail here.

[0065] In this embodiment, the sleeve 9 is made of metal, and the rod is made of plastic.

[0066] In this embodiment, the stapler swing head assembly further includes a swing head knob disposed at the proximal end of the sleeve 9 and a drive mechanism disposed within the sleeve 9 that connects the swing head knob and the proximal end of the swing head control member 3. The swing head knob drives the swing head control member 3 to move through the drive mechanism.

[0067] In this embodiment, the rotation of the fixed block enables the manipulator head 8 to swing. The rotation of the fixed block is driven by the swing head control component 3. When the swing head knob is turned to the left, the internal mechanism pushes the swing head control component 3 forward, causing the fixed block to swing to the left, and the manipulator head 8 swings to the left accordingly. Conversely, when the swing head knob is turned to the right, the internal mechanism pulls the swing head control component 3 backward, causing the fixed block to swing to the right, and the manipulator head 8 swings to the right accordingly.

[0068] The added reset control element 4 and two reset elastic elements are located on the opposite side of the rotation center of the clamp head 8, relative to the swing head control element 3. Half of the reset elastic element presses against the lower half 22 of the sleeve rod, and the other half presses against the reset control element 4. Once the reset control element 4 deviates from its initial position and leaves the second protrusion 222, the preload of the reset elastic element on one side will be entirely pressed against the swing head control element 3.

[0069] Specifically, the stapler in this embodiment has three working states:

[0070] like Figure 9 As shown, when the anastomosis device swing head mechanism is in the first working state, when the distal end of the swing head control member 3 is aligned with the distal end of the reset control member 4, the axis of the fixed block and the axis of the sleeve rod are collinear, the fourth protrusion 41 and the second protrusion 222 are close together, the distal end of the first reset elastic member 51 abuts against the first protrusion 221, the proximal end of the first reset elastic member 51 abuts against the fourth protrusion 41, the distal end of the second reset elastic member 52 abuts against the fourth protrusion 41, and the proximal end of the second reset elastic member 52 abuts against the third protrusion 223.

[0071] When the sway control plate is at a 0° angle in the jaw head 8, the two reset elastic elements are in their initial positions and are pre-compressed by the same distance. The pre-tension force of this pair of equal-sized and opposite-directed springs allows the reset control element 4 to remain in its initial position, keeping the fixed block jaw head 8 at a 0° position and preventing it from shaking, thus ensuring the stability of the jaw head 8.

[0072] like Figure 10 As shown, when the anastomosis device swing head mechanism is in the second working state, the distal end of the reset control member 4 extends beyond the distal end of the swing head control member 3, the axis of the fixed block intersects the axis of the sleeve rod, the fourth protrusion 41 is located between the first protrusion 221 and the second protrusion 222, the distal end of the first reset elastic member 51 abuts against the first protrusion 221, the proximal end of the first reset elastic member 51 abuts against the fourth protrusion 41, the distal end of the second reset elastic member 52 abuts against the second protrusion 222, and the proximal end of the second reset elastic member 52 abuts against the third protrusion 223.

[0073] When an external force pushes the swing head control component 3 forward, the fixed block at the jaw head 8 is pushed to rotate to the left. At this time, the reset control component 4 moves backward, disengaging from the first reset elastic component 51 and compressing the second reset elastic component 52. However, since the external force applied during swinging is much greater than the elastic force of the second reset elastic component 52, it does not affect the swinging operation. But when the swing head resets, the external force is released. If there is still a residual angle at the jaw head 8, the reset control component 4 will also deviate from its initial position. This causes the preload of the second reset elastic component 52 to act fully on the reset control component 4, pushing the reset control component 4 back to its initial position and effectively reducing the residual angle.

[0074] like Figure 11 As shown, when the anastomosis device swing head mechanism is in the third working state, the distal end of the swing head control member 3 extends beyond the distal end of the reset control member 4, the axis of the fixed block intersects the axis of the sleeve rod, the fourth protrusion 41 is located between the second protrusion 222 and the third protrusion 223, the distal end of the first reset elastic member 51 abuts against the first protrusion 221, the proximal end of the first reset elastic member 51 abuts against the second protrusion 222, the distal end of the second reset elastic member 52 abuts against the fourth protrusion 41, and the proximal end of the second reset elastic member 52 abuts against the third protrusion 223.

[0075] When an external force pushes the swing head control component 3 backward, the fixed block at the jaw head 8 is pulled and rotated to the right. At this time, the reset control component 4 moves forward, disengaging from the second reset elastic component 52 and compressing the first reset elastic component 51. When the jaw head 8 has a residual angle after reset, the preload of the first reset elastic component 51 will push the reset control component 4 back to its initial position, thereby reducing the residual angle.

[0076] The present invention has been described in detail above, with the aim of enabling those skilled in the art to understand and implement the invention. However, this description should not be construed as limiting the scope of protection of the invention. All equivalent changes or modifications made in accordance with the spirit and essence of the invention should be included within the scope of protection of the invention.

Claims

1. A stapler head swing mechanism, characterized in that, It includes: Fixed block, A sleeve rod has a space inside for installing a pusher assembly. The distal end of the sleeve rod is rotatably connected to the fixed block via a connector. A first groove extending from its distal end to its proximal end is provided on one side wall of the sleeve rod. A second groove extending from its distal end to its proximal end but not reaching its proximal end is provided on the other side wall of the sleeve rod. The second groove is provided with a first protrusion (221), a second protrusion (222), and a third protrusion (223) that are spaced apart in the extension direction of the second groove. A swing head control component (3) is slidably disposed in the first groove. The distal end of the swing head control component (3) is rotatably connected to one side of the fixed block, and the proximal end of the swing head control component (3) extends out of the proximal end of the sleeve rod. A reset control member (4) is slidably disposed in the second groove. The distal end of the reset control member (4) is rotatably connected to the other side of the fixed block. The middle part of the reset control member (4) is recessed to form a receiving groove, and its proximal end forms a fourth protrusion (41). The reset elastic element includes a first reset elastic element (51) and a second reset elastic element (52) disposed in the second groove. The first reset elastic element (51) is disposed between the first protrusion (221) and the second protrusion (222), and a portion of the first reset elastic element (51) is located in the receiving groove. The second reset elastic element (52) is disposed between the second protrusion (222) and the third protrusion (223). The stapler tilting mechanism includes a first working state, a second working state, and a third working state. When the stapler head swinging mechanism is in the first working state, the distal end of the head swinging control member (3) is aligned with the distal end of the reset control member (4), and the first reset elastic member (51) and the second reset elastic member (52) respectively abut against the fourth protrusion (41); When the anastomosis device swing head mechanism is in the second working state, the distal end of the reset control member (4) extends beyond the distal end of the swing head control member (3), the fourth protrusion (41) is located between the first protrusion (221) and the second protrusion (222), the first reset elastic member (51) abuts against the fourth protrusion (41) and the first reset elastic member (51) always has a tendency to extend towards the second protrusion (222); When the anastomosis device swing head mechanism is in the third working state, the distal end of the swing head control member (3) extends beyond the distal end of the reset control member (4), the fourth protrusion (41) is located between the second protrusion (222) and the third protrusion (223), the second reset elastic member (52) abuts against the fourth protrusion (41) and the second reset elastic member (52) always has a tendency to extend towards the second protrusion (222).

2. The anastomosis device tilting head mechanism according to claim 1, characterized in that, The width of the fourth protrusion (41) in the direction parallel to the axis of the sleeve is greater than or equal to the width of the second protrusion (222) in the direction parallel to the axis of the sleeve. When the anastomosis device swing head mechanism is in the first working state, when the distal end of the swing head control member (3) is aligned with the distal end of the reset control member (4), the axis of the fixing block and the axis of the sleeve rod are collinear, the fourth protrusion (41) and the second protrusion (222) are close together, the distal end of the first reset elastic member (51) abuts against the first protrusion (221), the proximal end of the first reset elastic member (51) abuts against the fourth protrusion (41), the distal end of the second reset elastic member (52) abuts against the fourth protrusion (41), and the proximal end of the second reset elastic member (52) abuts against the third protrusion (223); When the anastomosis device swing head mechanism is in the second working state, the distal end of the reset control member (4) extends beyond the distal end of the swing head control member (3), the axis of the fixed block intersects with the axis of the sleeve rod, the fourth protrusion (41) is located between the first protrusion (221) and the second protrusion (222), the distal end of the first reset elastic member (51) abuts against the first protrusion (221), the proximal end of the first reset elastic member (51) abuts against the fourth protrusion (41), the distal end of the second reset elastic member (52) abuts against the second protrusion (222), and the proximal end of the second reset elastic member (52) abuts against the third protrusion (223); When the anastomosis device swing head mechanism is in the third working state, the distal end of the swing head control member (3) extends beyond the distal end of the reset control member (4), the axis of the fixed block intersects the axis of the sleeve rod, the fourth protrusion (41) is located between the second protrusion (222) and the third protrusion (223), the distal end of the first reset elastic member (51) abuts against the first protrusion (221), the proximal end of the first reset elastic member (51) abuts against the second protrusion (222), the distal end of the second reset elastic member (52) abuts against the fourth protrusion (41), and the proximal end of the second reset elastic member (52) abuts against the third protrusion (223).

3. The anastomosis device tilting head mechanism according to claim 1, characterized in that, The distal end of the swing control component (3) is provided with a first strip hole (31), the extension direction of the first strip hole (31) is perpendicular to the axis of the fixed block, and the fixed block is provided with a first connecting post (61), which is movably inserted into the first strip hole (31). The reset control component (4) has a second strip hole (42) at its far end. The extension direction of the second strip hole (42) is perpendicular to the axis of the fixing block. The fixing block has a second connecting post (62) which is movably inserted into the second strip hole (42).

4. The anastomosis device tilting head mechanism according to claim 3, characterized in that, The fixing block includes an upper fixing block (11) and a lower fixing block (12). One side of the upper fixing block (11) and the lower fixing block (12) are connected by the first connecting post (61), and the other side of the upper fixing block (11) and the lower fixing block (12) are connected by the second connecting post (62).

5. The anastomosis device tilting head mechanism according to claim 4, characterized in that, The sleeve includes a separate upper half (21) and a lower half (22). The distal end of the upper half (21) is rotatably connected to the upper fixing block (11) via a first connector (71), and the distal end of the lower half (22) is rotatably connected to the lower fixing block (12) via a second connector.

6. The anastomosis device tilting mechanism according to claim 5, characterized in that, The first groove is formed on one side of the upper half (21) and the lower half (22), and the second groove is formed at the far end of the other side of the upper half (21) and the lower half (22). The proximal ends of the other side of the upper half (21) and the lower half (22) are engaged with each other.

7. The anastomosis device tilting head mechanism according to claim 1, characterized in that, The anastomosis device swing head mechanism also includes a sleeve (9) sleeved outside the sleeve rod, the swing head control member (3), the reset control member (4) and the reset elastic member.

8. The anastomosis device tilting head mechanism according to claim 7, characterized in that, The sleeve (9) is made of metal; And / or, the sleeve is made of plastic; And / or, the stapler head-swing mechanism further includes a head-swing knob disposed at the proximal end of the sleeve (9) and a drive mechanism disposed within the sleeve (9) connecting the head-swing knob and the proximal end of the head-swing control member (3), wherein the head-swing knob drives the head-swing control member (3) to move via the drive mechanism.

9. The anastomosis device tilting head mechanism according to claim 1, characterized in that, The distance between the first protrusion (221) and the second protrusion (222) is equal to the distance between the second protrusion (222) and the third protrusion (223); And / or, the first reset elastic element (51) and the second reset elastic element (52) are springs respectively.

10. A stapler, characterized in that, It includes a stapler swing head mechanism, a clamp head (8), a firing assembly, and a staple cartridge as described in any one of claims 1 to 8, wherein the clamp head (8) is disposed on the fixed block of the stapler swing head mechanism, and the clamp head (8) includes an anvil and a staple cartridge seat, the anvil and the staple cartridge seat being hinged together.

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