Semi-automatic arc needle suturing device

Abstract

The semi-automatic arc needle suturing device comprises a support, and a transmission gear, a synchronous spur gear, a synchronous bevel gear set, a front face working mechanism and a back face working mechanism are arranged on the support. A left side sub-rotating piece and a right side sub-rotating piece of the front working mechanism or the back working mechanism are arranged in a mirror symmetry mode, and the front working mechanism and the back working mechanism are subjected to reverse transmission through a synchronous bevel gear set. By means of the device, the curve of an operation wound surface can be better attached, the requirement for a complex suture surface is met, the finer and more perfect suture effect is achieved, in the open or laparoscopic surgery, manual suture at some special angles is very difficult, and the device can finish the manual suture process in a semi-automatic simulation mode; meanwhile, by means of semi-automatic arc needle suture, suture efficiency can be remarkably improved, and especially under the condition that blood supply of visceral organs is blocked or blood vessels are damaged, visceral organ function loss, blood loss volume and death risks in the perioperative period are reduced; in addition, physical power and energy loss of doctors can be further reduced.

Description

Technical Field

[0001] The invention relates to the technical field of clinical surgical suturing devices, in particular to a semi-automatic arc needle suturing device. Background Art

[0002] In clinical surgeries, such as solid organ wound repair, hollow organ plastic surgery, anastomosis or repair, vascular anastomosis and repair operations, suturing efficiency is crucial, which is closely related to perioperative organ function recovery and life maintenance.

[0003] Traditional manual arc needle suturing methods (including open and laparoscopic procedures) often result in long suturing time, difficulty in removing the needle, and tissue cutting when faced with complex suturing conditions (including the required tissue apposition area, suturing angle, tissue edema, thin-walled tissue, etc.). For novices, especially laparoscopic surgery, there will be problems such as difficulty in adjusting the suture needle angle and finding the needle, resulting in low suturing efficiency, which in turn affects the surgical effect, organ prognosis and patient survival. Therefore, semi-automatic simulation instruments are needed to replace manual suturing.

[0004] Currently, there is no relevant suturing instrument in clinical surgery, and other alternative suturing instruments cannot meet the needs of clinical surgeons; therefore, the present invention proposes a semi-automatic arc needle suturing device. Summary of the invention

[0005] In view of the above technical problems in the related art, the present invention proposes a semi-automatic arc needle suturing device, which can overcome the above shortcomings of the prior art.

[0006] To achieve the above technical objectives, the technical solution of the present invention is implemented as follows: A semi-automatic arc needle suturing device; The semi-automatic arc needle suturing device comprises a bracket, on which a transmission gear, a synchronous spur gear, a synchronous bevel gear set, a front working mechanism and a back working mechanism are arranged; The synchronous bevel gear set includes a pair of first synchronous bevel gears and a pair of second synchronous bevel gears, wherein a spur gear on one of the first synchronous bevel gears meshes with the synchronous spur gears, and the synchronous spur gears meshes with a transmission gear located at the back of the device; The front working mechanism and the back working mechanism both include a cover plate, a central pivoting member, a clamp arm limiting wheel, a left sub-rotating member, a right sub-rotating member, a clamp arm, a rotating wheel of the clamp arm, a clamp, a clamp rack, a clamp rotating wheel and a clamp rotating wheel limiter; The left sub-rotating member structures of the front working mechanism and the back working mechanism are mirror-symmetrical, and the right sub-rotating member structures of the front working mechanism and the back working mechanism are mirror-symmetrical. The synchronous bevel gear set causes the front working mechanism and the back working mechanism to be reversely driven.

[0007] Furthermore, the bracket includes a chassis, a bracket base and a cover plate, and the synchronous bevel gear set in the front working mechanism or the back working mechanism is fastened to the central pivot member and the clamp arm limiting wheel embedded in the bracket base, and the central pivot member can rotate in the chassis, and can push the left sub-rotating member and the right sub-rotating member also embedded in the bracket base and make them rotate; the central pivot member, the left sub-rotating member and the right sub-rotating member are respectively provided with a central pivot member round pin, a left sub-rotating member round pin and a right sub-rotating member round pin.

[0008] Furthermore, a rotating shaft is provided on the cover plate, and a clamp arm and a clamp arm rotating wheel are provided on the rotating shaft, and the clamp arm and the clamp arm rotating wheel can rotate on the rotating shaft of the cover plate; a clamp arm rotating wheel sliding groove is provided in the clamp arm rotating wheel; the central pivot round pin on the central pivot member can enter the clamp arm rotating wheel sliding groove, so that the rotation of the central pivot member can drive the clamp arm to reciprocate 180º below the cover plate; when the clamp arm reaches a certain side limit position, the clamp arm limiting wheel is engaged with the clamp arm rotating wheel, thereby fixing the clamp arm at the side limit position until the central pivot round pin again reversely enters the clamp arm rotating wheel sliding groove to drive the clamp arm to rotate in the opposite direction.

[0009] Furthermore, a clamp arm tail hole is provided at the tail of the clamp arm, and a chuck rotating wheel is provided in the clamp arm tail hole, and the chuck rotating wheel can reciprocate 180° in the clamp arm tail hole; a chuck rotating wheel sliding groove is provided in the chuck rotating wheel, and the left-side split rotating part round pin and the right-side split rotating part round pin can enter the chuck rotating wheel sliding groove accordingly when the clamp arm is in the left and right limit positions, and drive the chuck rotating wheel to rotate.

[0010] Furthermore, a chuck and a chuck rack are provided in the cavity of the chuck arm, and the chuck rack is meshed with the spur gear on the chuck rotating wheel; when the chuck rotating wheel rotates, the chuck and the chuck rack are driven to move relative to each other, so that the chuck is closed or opened.

[0011] Furthermore, a pair of chuck rotating wheel limiters are provided in the hole at the tail of the chuck arm and around the chuck rotating wheel, and a spring is provided between the chuck rotating wheel limiter and the tail of the chuck arm.

[0012] Further, when the chuck rotating wheel is in the limit position and the left-side rotating part round pin or the right-side rotating part round pin is not in contact with the chuck rotating wheel limiter, both chuck rotating wheel limiters are stationary, limiting the rotation of the chuck rotating wheel.

[0013] Furthermore, when the clamp arm rotates to the limit position and the round pin of the left-side rotary member or the round pin of the right-side rotary member just reaches the chuck rotating wheel sliding groove, the chuck rotating wheel limiter on that side is lifted up, and the chuck rotating wheel can rotate, and the round pin of the left-side rotary member or the round pin of the right-side rotary member enters the chuck rotating wheel sliding groove, thereby driving it to rotate close to the limit position on the other side; during the process, since the round pin of the left-side rotary member or the round pin of the right-side rotary member is out of contact with the chuck rotating wheel limiter, the lifted chuck rotating wheel limiter is reset under the action of the spring; when the round pin of the left-side rotary member or the round pin of the right-side rotary member drives the chuck rotating wheel close to the limit position on the other side, the chuck rotating wheel lifts the chuck rotating wheel limiter at that location and gradually enters the latter's limit range.

[0014] Further, when the chuck rotating wheel completely enters the limiting range of the chuck rotating wheel limiter, the chuck rotating wheel limiter is reset under the action of the spring and limits the rotation of the chuck rotating wheel.

[0015] Furthermore, the shapes of the left-side dividing part and the right-side dividing part in the same surface working mechanism are inconsistent, and the time when the longer round pin enters the chuck rotating wheel sliding groove is later than the time when the shorter round pin enters the chuck rotating wheel sliding groove, so that when the clamp arm is in the limit position, the opening time of the chuck is relatively later than its closing time.

[0016] The beneficial effects of the present invention are as follows: through the technical solution provided by the present invention, it is possible to better fit the curve of the surgical wound, adapt to the needs of complex suture surfaces, and achieve a more delicate and perfect suturing effect. In open or laparoscopic surgery, some special angles are very difficult to sew manually. The device can efficiently and semi-automatically simulate the manual suturing process. At the same time, semi-automatic arc needle suturing can significantly improve the suturing efficiency, especially in the case of organ blood supply blockage or vascular damage, reducing perioperative organ function loss, blood loss and death risk; in addition, it can further reduce the doctor's physical and energy consumption. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 is a disassembled view from the front upper perspective of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Figure 2 is a first-view stereoscopic diagram of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Figure 3 It is a front view from a second perspective of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Figure 4 is a front view of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Figure 5 is a partial stereoscopic diagram from a third viewing angle of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Figure 6 is a fourth perspective stereogram of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Figure 7 is a fifth perspective stereogram of a clamping arm of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Figure 8 is a first perspective stereoscopic diagram of a clamping arm of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Fig. 9 is a second perspective stereogram of a clamping arm of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Fig.10 is a partial stereoscopic diagram of a clamping arm of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Fig.11 It is a stereoscopic diagram of a chuck rotating wheel, a chuck rotating wheel stopper and a spring of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Fig.12 It is a three-dimensional diagram of a clamp rotating wheel stopper and a spring of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Fig.13 is a stereoscopic diagram of a clamp rotating wheel stopper of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Fig.14 It is a three-dimensional diagram of a central pivot member, a left-side sub-rotation member and a right-side sub-rotation member of a clamp rotating wheel stopper of a semi-automatic arc needle suturing device according to an embodiment of the present invention; Fig.15 is a stereoscopic diagram of a clamp arm stopper of a semi-automatic arc needle suturing device according to an embodiment of the present invention; In the figure: 1. transmission gear; 2. synchronous spur gear; 3. first synchronous bevel gear; 4. second synchronous bevel gear; 5. bracket; 6. chassis; 7. bracket base; 8. cover plate; 9. central pivot member; 10. left sub-rotation member; 11. right sub-rotation member; 12. clamping arm; 13. chuck; 14. chuck rack; 15. chuck rotating wheel; 16. chuck rotating wheel limiter; 17. central pivot member round pin; 18. left sub-rotation member round pin; 19. right sub-rotation member round pin; 20. spring; 21. clamp arm tail hole; 22. chuck rotating wheel slide groove; 23. clamp arm limit wheel. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of the present invention.

[0020] It should be understood that, in the description of the embodiments of the present invention, the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the embodiments of the present invention, the meaning of "several" is two or more, unless otherwise clearly and specifically defined.

[0021] like Figure 1-13 As shown, a semi-automatic arc needle suturing device according to an embodiment of the present invention comprises a bracket 5, on which a transmission gear 1, a synchronous spur gear 2, a synchronous bevel gear set, a front working mechanism and a back working mechanism are provided; The synchronous bevel gear set includes a pair of first synchronous bevel gears 3 and a pair of second synchronous bevel gears 4, wherein the spur gear on one of the first synchronous bevel gears 3 is meshed with the synchronous spur gear 2, and the synchronous spur gear 2 is meshed with the transmission gear 1 located at the back of the device; The front working mechanism and the back working mechanism both include a cover plate 8, a central pivot member 9, a clamp arm limiting wheel 23, a left sub-rotation member 10, a right sub-rotation member 11, a clamp arm 12, a rotating wheel of the clamp arm, a clamp head 13, a clamp head rack 14, a clamp head rotating wheel 15 and a clamp head rotating wheel limiter 16; The left sub-rotating parts 10 of the front working mechanism and the back working mechanism are mirror-symmetrical in structure, and the right sub-rotating parts 11 of the front working mechanism and the back working mechanism are mirror-symmetrical in structure. The synchronous bevel gear set causes the front working mechanism and the back working mechanism to be reversely driven.

[0022] According to a semi-automatic arc needle suturing device described in an embodiment of the present invention, in a specific embodiment, the bracket 5 includes a chassis 6, a bracket base 7 and a cover plate 8, the synchronous bevel gear set in the front working mechanism or the back working mechanism is fastened to the central pivot member 9 embedded in the bracket base 7 and the clamp arm limiting wheel 23, the central pivot member 9 can rotate in the chassis 6, and can push the left sub-rotation member 10 and the right sub-rotation member 11 which are also embedded in the bracket base 7 and rotate them; the central pivot member 9, the left sub-rotation member 10 and the right sub-rotation member 11 are respectively provided with a central pivot member round pin 17, a left sub-rotation member round pin 18 and a right sub-rotation member round pin 19.

[0023] According to a semi-automatic arc needle suturing device described in an embodiment of the present invention, in a specific embodiment, a rotating shaft is provided on the cover plate 8, and a clamp arm 12 and a clamp arm rotating wheel are provided on the rotating shaft, and the clamp arm 12 and the clamp arm rotating wheel can rotate on the rotating shaft of the cover plate 8; a clamp arm rotating wheel sliding groove is provided in the clamp arm rotating wheel; the central pivot member round pin 17 on the central pivot member 9 can enter the clamp arm rotating wheel sliding groove, so that the rotation of the central pivot member 9 can drive the clamp arm 12 to reciprocate 180º below the cover plate 8; when the clamp arm 12 reaches a certain side limit position, the clamp arm limiting wheel 23 is engaged with the clamp arm rotating wheel, so that the clamp arm 12 is fixed at the side limit position until the central pivot member round pin 17 enters the clamp arm rotating wheel sliding groove again in the opposite direction to drive the clamp arm 12 to rotate in the opposite direction.

[0024] According to a semi-automatic arc needle suturing device described in an embodiment of the present invention, in a specific embodiment, the tail of the clamp arm 12 is provided with a clamp arm tail hole 21, and a chuck rotating wheel 15 is provided in the clamp arm tail hole 21, and the chuck rotating wheel 15 can reciprocate 180º in the clamp arm tail hole 21; the chuck rotating wheel 12 is provided with a chuck rotating wheel sliding groove 22, and the left-side dividing part round pin 18 and the right-side dividing part round pin 19 can enter the chuck rotating wheel sliding groove 22 accordingly when the clamp arm 12 is in the left and right limit positions, and drive the chuck rotating wheel 15 to rotate.

[0025] According to a semi-automatic arc needle suturing device described in an embodiment of the present invention, in a specific embodiment, a chuck 13 and a chuck rack 14 are provided in the cavity of the chuck arm 12, and the chuck rack 14 is meshed with the spur gear on the chuck rotating wheel 15; when the chuck rotating wheel 15 rotates, it drives the chuck 13 and the chuck rack 14 to move relative to each other, thereby causing the chuck 13 to close or open.

[0026] According to a semi-automatic arc needle suturing device described in an embodiment of the present invention, in a specific embodiment, a pair of chuck rotating wheel limiters 16 are provided in the hole 21 at the tail of the chuck arm and around the chuck rotating wheel 15, and a spring 20 is provided between the chuck rotating wheel limiter 16 and the tail of the chuck arm 12.

[0027] According to a semi-automatic arc needle suturing device described in an embodiment of the present invention, in a specific embodiment, when the chuck rotating wheel 15 is in the limit position and the left-side dividing part round pin 18 or the right-side dividing part round pin 19 is not in contact with the chuck rotating wheel limiter 16, the two chuck rotating wheel limiters 16 are both stationary, restricting the rotation of the chuck rotating wheel 15.

[0028] According to a semi-automatic arc needle suturing device described in an embodiment of the present invention, in a specific embodiment, when the clamp arm 12 rotates to the limit position, the left-side dividing part round pin 18 or the right-side dividing part round pin 19 just arrives at the chuck rotating wheel sliding groove 22, the chuck rotating wheel limiter 16 on this side is lifted, the chuck rotating wheel 15 can rotate, and the left-side dividing part round pin 18 or the right-side dividing part round pin 19 enters the chuck rotating wheel sliding groove 22, thereby driving it to rotate close to the other side extreme position. During the limiting process, since the left-side rotating part round pin 18 or the right-side rotating part round pin 19 is out of contact with the chuck rotating wheel limiter 16, the lifted chuck rotating wheel limiter 16 is reset under the action of the spring 20; when the left-side rotating part round pin 18 or the right-side rotating part round pin 19 drives the chuck rotating wheel 15 to approach the limit position on the other side, the chuck rotating wheel 15 lifts the chuck rotating wheel limiter 16 at that location and gradually enters the latter's limit range.

[0029] According to a semi-automatic arc needle suturing device described in an embodiment of the present invention, in a specific embodiment, when the chuck rotating wheel 15 completely enters the limiting range of the chuck rotating wheel limiter 16, the chuck rotating wheel limiter 16 is reset under the action of the spring 20 and limits the rotation of the chuck rotating wheel 15.

[0030] According to a semi-automatic arc needle suturing device described in an embodiment of the present invention, in a specific embodiment, the left-side dividing part 10 and the right-side dividing part 11 in the same surface working mechanism are inconsistent in shape, and the time when the longer round pin enters the chuck rotating wheel sliding groove 22 is later than the time when the shorter round pin enters the chuck rotating wheel sliding groove 22, so that when the clamp arm 12 is in the limit position, the opening time of the chuck 13 is relatively later than its closing time.

[0031] In order to facilitate understanding of the above technical solutions of the present invention, the above technical solutions of the present invention are described in detail below through specific usage methods.

[0032] During specific use, according to a semi-automatic arc needle suturing device described in the present invention, the dividing parts of the front working mechanism and the back working mechanism are arranged in mirror symmetry, so during a unidirectional rotation of the central pivot 9, the round pin of the front dividing part and the round pin of the back dividing part enter the sliding groove 22 of the chuck rotating wheel in sequence.

[0033] During operation, the movement process of the single-sided working mechanism of the front working mechanism or the back working mechanism is as follows: When the clamp arm 12 is at the limit position on one side and the central pivot member 9 rotates to the opposite side, the central pivot member round pin enters the sliding groove of the clamp arm rotating wheel, driving the clamp arm 12 to rotate 180° to the limit position on the opposite side. During this process, the central pivot member 9 also drives the two sub-rotating members to rotate in the same direction. When the clamp arm 12 rotates to the limit position on the opposite side, the central pivot member 9 rotates further, and the clamp arm limit wheel 23 engages the clamp arm rotating wheel to limit the movement of the clamp arm 12. The central pivot member 9 rotates further, driving the sub-rotating member round pin on the current rotating side to lift the clamp head rotating wheel limiter 16 and enter the clamp head rotating wheel sliding groove 22, thereby driving the clamp head rotating wheel 15 to rotate 180° and limit it by the clamp head rotating wheel limiter 16. When the clamp head rotating wheels 15 in the double-sided working mechanism have completed rotation and limit, the central pivot member 9 reaches the limit position and can be stationary or rotated; this reciprocating cycle continues.

[0034] During operation, the double-sided working mechanism of the front working mechanism and the back working mechanism has the following movement effects: During the reciprocating motion of a central pivot 9, the clamp arms 12 on both sides rotate in the opposite direction to the limit position on one side, and then the originally opened clamp 13 closes first, and the originally closed clamp 13 opens later. Next, the clamp arms 12 on both sides reverse their direction and rotate in the opposite direction to the limit position on the opposite side, and then the originally opened clamp 13 closes first, and the originally closed clamp 13 opens later. Thus, the following sequential actions are completed: clamp arm rotation-clamp a captures-clamp b vertically-clamp arm rotation-clamp b captures-clamp a vertically. Combined with the arc needle, the effect is: needle insertion-needle connection-needle extraction-needle connection, this cycle.

[0035] To sum up, with the help of the above-mentioned technical scheme of the present invention, through the technical scheme provided by the present invention, it is possible to better fit the curve of the surgical wound, adapt to the needs of complex suture surfaces, and achieve a more delicate and perfect suturing effect. In open or laparoscopic surgery, some special angles are very difficult to sew manually. The device can semi-automatically simulate the manual suturing process; at the same time, semi-automatic arc needle suturing can significantly improve the suturing efficiency, especially in the case of organ blood supply blockage or vascular damage, reducing perioperative organ function loss, blood loss and death risk; in addition, it can further reduce the doctor's physical and energy consumption.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A semi-automatic arc needle suturing device, characterized in that: It comprises a bracket (5), on which a transmission gear (1), a synchronous spur gear (2), a synchronous bevel gear set, a front working mechanism and a back working mechanism are provided; The synchronous bevel gear set comprises a pair of first synchronous bevel gears (3) and a pair of second synchronous bevel gears (4), wherein a spur gear on one of the first synchronous bevel gears (3) meshes with the synchronous spur gear (2), and the synchronous spur gear (2) meshes with a transmission gear (1) located at the back of the device; The front working mechanism and the back working mechanism both comprise a cover plate (8), a central pivot member (9), a clamp arm limiting wheel (23), a left-side sub-rotation member (10), a right-side sub-rotation member (11), a clamp arm (12), a rotating wheel of the clamp arm, a clamp head (13), a clamp head rack (14), a clamp head rotating wheel (15) and a clamp head rotating wheel limiter (16); The left sub-rotating parts (10) of the front working mechanism and the back working mechanism are mirror-symmetrical in structure, and the right sub-rotating parts (11) of the front working mechanism and the back working mechanism are mirror-symmetrical in structure. The synchronous bevel gear set causes the front working mechanism and the back working mechanism to be reversely driven.

2. A semi-automatic arc needle suturing device according to claim 1, characterized in that: The bracket (5) comprises a chassis (6), a bracket base (7) and a cover plate (8); the synchronous bevel gear set in the front working mechanism or the back working mechanism is fastened to a central pivot member (9) embedded in the bracket base (7) and a clamp arm limiting wheel (23); the central pivot member (9) can rotate in the chassis (6) and can push a left sub-rotation member (10) and a right sub-rotation member (11) also embedded in the bracket base (7) to rotate; the central pivot member (9), the left sub-rotation member (10) and the right sub-rotation member (11) are respectively provided with a central pivot member round pin (17), a left sub-rotation member round pin (18) and a right sub-rotation member round pin (19).

3. A semi-automatic arc needle suturing device according to claim 2, characterized in that: The cover plate (8) is provided with a rotating shaft, and a clamp arm (12) and a clamp arm rotating wheel are provided on the rotating shaft, and the clamp arm (12) and the clamp arm rotating wheel can rotate on the rotating shaft of the cover plate (8); a clamp arm rotating wheel sliding groove is provided in the clamp arm rotating wheel; the central pivot round pin (17) on the central pivot member (9) can enter the clamp arm rotating wheel sliding groove, so that the rotation of the central pivot member (9) can drive the clamp arm (12) to reciprocate 180° below the cover plate (8); when the clamp arm (12) reaches a certain side limit position, the clamp arm limiting wheel (23) is engaged with the clamp arm rotating wheel, so that the clamp arm (12) is fixed at the side limit position until the central pivot round pin (17) enters the clamp arm rotating wheel sliding groove again in the opposite direction to drive the clamp arm (12) to rotate in the opposite direction.

4. A semi-automatic arc needle suturing device according to claim 3, characterized in that: The tail of the clamp arm (12) is provided with a clamp arm tail hole (21), and a clamp rotating wheel (15) is provided in the clamp arm tail hole (21). The clamp rotating wheel (15) can reciprocate 180 degrees in the clamp arm tail hole (21); the clamp rotating wheel (12) is provided with a clamp rotating wheel sliding groove (22), and the left-side split rotating part round pin (18) and the right-side split rotating part round pin (19) can enter the clamp rotating wheel sliding groove (22) respectively when the clamp arm (12) is in the left and right limit positions, and drive the clamp rotating wheel (15) to rotate.

5. A semi-automatic arc needle suturing device according to claim 4, characterized in that: A chuck (13) and a chuck rack (14) are provided in the cavity of the chuck arm (12), and the chuck rack (14) is meshed with a spur gear on the chuck rotating wheel (15); when the chuck rotating wheel (15) rotates, it drives the chuck (13) and the chuck rack (14) to move relative to each other, thereby causing the chuck (13) to close or open.

6. A semi-automatic arc needle suturing device according to claim 5, characterized in that: A pair of chuck rotating wheel limiters (16) are provided in the hole (21) at the rear end of the chuck arm and around the chuck rotating wheel (15), and a spring (20) is provided between the chuck rotating wheel limiter (16) and the rear end of the chuck arm (12).

7. A semi-automatic arc needle suturing device according to claim 6, characterized in that: When the chuck rotating wheel (15) is in the limit position and the left-side rotating part round pin (18) or the right-side rotating part round pin (19) is not in contact with the chuck rotating wheel limiter (16), both chuck rotating wheel limiters (16) are stationary, limiting the rotation of the chuck rotating wheel (15).

8. A semi-automatic arc needle suturing device according to claim 7, characterized in that: When the clamp arm (12) rotates to the limit position, the left-side rotating part round pin (18) or the right-side rotating part round pin (19) just reaches the clamp rotating wheel sliding groove (22), the clamp rotating wheel limiter (16) on this side is lifted, the clamp rotating wheel (15) can rotate, and the left-side rotating part round pin (18) or the right-side rotating part round pin (19) enters the clamp rotating wheel sliding groove (22), thereby driving it to rotate close to the limit position on the other side; during the process, due to the left-side rotating part round pin (18) or the right-side rotating part round pin (19) is out of contact with the chuck rotating wheel limiter (16), so the lifted chuck rotating wheel limiter (16) is reset under the action of the spring (20); when the left-side rotating part round pin (18) or the right-side rotating part round pin (19) drives the chuck rotating wheel (15) to approach the limit position on the other side, the chuck rotating wheel (15) lifts the chuck rotating wheel limiter (16) at that location and gradually enters the latter's limit range.

9. A semi-automatic arc needle suturing device according to claim 8, characterized in that: When the chuck rotating wheel (15) completely enters the limiting range of the chuck rotating wheel limiter (16), the chuck rotating wheel limiter (16) is reset under the action of the spring (20) and limits the rotation of the chuck rotating wheel (15).

10. A semi-automatic arc needle suturing device according to claim 9, characterized in that: The left-side rotating part (10) and the right-side rotating part (11) in the same surface working mechanism are of different shapes, and the time when the longer round pin enters the chuck rotating wheel sliding groove (22) is later than the time when the shorter round pin enters the chuck rotating wheel sliding groove (22), so that when the clamp arm (12) is in the limit position, the opening time of the chuck (13) is relatively later than its closing time.

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