A bendable stapler

Abstract

This invention discloses a flexible suture device, belonging to the field of medical device technology. It includes a long pull rod with an inner sleeve and an outer sleeve. An inner hexagonal tube is connected to the end of the outer sleeve near the spring plate. A first serpentine segment, multiple evenly arranged second serpentine segments, and a third serpentine segment are sequentially connected to the end of the inner hexagonal tube away from the outer sleeve. An outer hexagonal tube is connected to the end of the inner sleeve near the inner hexagonal tube, and the outer hexagonal tube is slidably connected inside the inner hexagonal tube. By setting a flexible rod body composed of the first, second, and third serpentine segments, and using a front rotating wheel, small springs, and large springs to achieve rod body angle bending, the straight dissection forceps head and the front of the rod body can bypass fixed instruments such as grasping forceps and clamps during surgery, avoiding instrument-obstructed areas and reaching suture positions that are difficult to reach with conventional straight rod instruments, such as corners of the surgical area and behind instruments, thus improving the accuracy of suture operations in narrow cavities.

Description

Technical Field

[0001] This invention belongs to the field of medical device technology and relates to a suture device, specifically a flexible suture device. Background Technology

[0002] Suture devices are surgical instruments used to separate, clamp, and cut tissues, and to assist needle holders in suturing tissues. They are suitable for various minimally invasive surgical procedures such as laparoscopy and thoracoscopy, and can be used in narrow spaces inside the human chest and abdominal cavities to perform deep separation, clamping, cutting, suturing, and internal knotting of soft tissues of internal organs and various surgical wounds.

[0003] Patent application CN222426202U discloses a handle for laparoscopic electrocoagulation surgical instruments. During use, the locking lever can be engaged or disengaged by moving the locking block. Specifically, when the forceps clamp tissue, the rear handle is fixed relative to the front handle, and the locking block locks the lever, achieving a locking function. While this handle can clamp tissue during surgery, in practice, fixation instruments such as grasping forceps or applicators are often used to continuously clamp and fix tissue. When using this handle to grasp tissue or suture wounds, the inability of the forceps bar to bend can lead to collisions or scrapes between the forceps head or bar and the grasping forceps or applicators. Furthermore, the grasping forceps or applicators can obstruct the needle tip's path, limiting the angle adjustment of the suture needle, causing it to slip or bend. This necessitates continuous arm rotation by medical personnel to complete the suturing work, increasing arm fatigue and affecting suturing accuracy and surgical efficiency. Summary of the Invention

[0004] The purpose of this invention is to solve the problems in the prior art where the clamp bar of the suture device cannot be bent, and the fixing device blocks the needle tip or clamp bar, which increases the difficulty of medical staff's work and affects the suturing accuracy and surgical efficiency. The invention provides a flexible suture device.

[0005] The objective of this invention can be achieved through the following technical solutions: A flexible suture device includes a long pull rod with an inner sleeve and an outer sleeve. An inner hexagonal tube is connected to the end of the outer sleeve near a spring plate. A first serpentine segment, multiple evenly arranged second serpentine segments, and a third serpentine segment are sequentially connected to the end of the inner hexagonal tube away from the outer sleeve. An outer hexagonal tube is slidably connected within the inner hexagonal tube. A small spring and a large spring are connected to the end of the outer hexagonal tube away from the inner sleeve. Both the small and large springs are arranged parallel to the spring plate. A first connecting groove and a second connecting groove are respectively formed on the first, second, and third serpentine segments corresponding to the positions of the small and large springs.

[0006] Preferably, the first snake bone segment is composed of a circular ring and symmetrically arranged connecting ears; the second snake bone segment is composed of a circular ring and symmetrically arranged connecting ears, and the circular ring has symmetrically arranged ear grooves at a position away from the connecting ears, the connecting ears and ear grooves are adapted to each other; the third snake bone segment is composed of a circular ring, and one end of the circular ring has symmetrically arranged ear grooves.

[0007] Preferably, the first snake bone segment is connected to the ear groove of the second snake bone segment via a connecting ear, adjacent second snake bone segments are connected end to end via connecting ears and ear grooves, and the third snake bone segment is connected to the connecting ear of the end of the second snake bone segment away from the first snake bone segment via an ear groove.

[0008] Preferably, there is a height difference at the end of the second snake bone segment that is close to the first snake bone segment, and the lower height positions are distributed in a straight line at the same position of the second snake bone segment.

[0009] Preferably, a spring plate is connected to the end of the long pull rod near the inner sleeve, a short pull rod is connected to the end of the spring plate away from the long pull rod, and a straight separation clamp head is provided at the end of the short pull rod away from the spring plate.

[0010] Preferably, a rear handle is provided at the end of the long pull rod away from the straight separation pliers head, and a front handle is rotatably connected to the outer side of the rear handle near the long pull rod, with the long pull rod passing through the front handle, and a rear wheel is provided on the side of the front handle away from the rear handle.

[0011] Preferably, a front wheel is provided on the side of the rear wheel away from the front handlebar, a positioning sleeve is provided on the side of the front wheel away from the rear wheel, a screw is threadedly connected to the inner side of the front wheel, and symmetrically arranged positioning inserts are connected to the rear wheel at the position corresponding to the screw. The screw has symmetrically arranged slots at the position corresponding to the positioning inserts.

[0012] Preferably, a sleeve is connected to the middle of the side of the screw near the rear rotating wheel, the sleeve is slidably connected to the rear rotating wheel, the outer side of the inner sleeve is threaded to the screw and the sleeve, and a connector is inserted into the positioning sleeve, with the end of the connector near the rear rotating wheel located between the positioning inserts.

[0013] Preferably, a first positioning groove is formed on the outer side of the positioning insert corresponding to the position of the positioning sleeve, and a second positioning groove is formed on the positioning sleeve corresponding to the position of the positioning insert. The position of the positioning sleeve near the rear rotating wheel is engaged in the first positioning groove, and the end of the positioning insert away from the rear rotating wheel is engaged in the second positioning groove.

[0014] Preferably, the medical staff fixes the rear rotating wheel with one hand and rotates the front rotating wheel according to the arrow markings. The rotation of the front rotating wheel causes the screw to move inside the front rotating wheel. The movement of the screw drives the inner sleeve rod, the outer hexagonal tube, the small spring, and the large spring to move. Because there is a height difference between the second and third snake bone segments and the end closest to the first snake bone segment, the small spring and the large spring will simultaneously generate pushing and pulling forces on both sides of the first, second, and third snake bone segments when they move, thereby causing the first, second, and third snake bone segments to bend. By controlling the amount of movement of the small spring and the large spring, the degree of bending of the first, second, and third snake bone segments can be controlled.

[0015] The beneficial effects of this invention are: 1) By setting up a flexible rod body composed of a first snake bone segment, a second snake bone segment, and a third snake bone segment, and using a front rotating wheel, small spring, and large spring to achieve the bending angle of the rod body, the straight separation forceps head and the front of the rod body can bypass the grasping forceps, clamping devices, and other fixed instruments during the operation, avoid the areas obstructed by instruments, and directly reach the suturing positions that are difficult to reach by conventional straight rod instruments, such as the corners of the surgical area and the rear of the instruments. This solves the problem of collision and scraping between the straight rod suture rod body, forceps head and fixed instruments, and the obstruction of the needle tip's travel path, and avoids the slippage and bending of the suture needle, thus improving the accuracy of suturing operations in narrow cavities.

[0016] 2) By equipping the rear rotating wheel, the front end can be rotated and the angle adjusted synchronously. Medical staff do not need to continuously rotate their wrists, forearms or upper arms to adapt to the wound angle, which relieves limb fatigue caused by long-term surgery, shortens the overall operation time, and improves efficiency.

[0017] 3) The linkage between the rear handle, the limiting slide bar, and the sliding sleeve can control the opening and closing of the front straight separation forceps, the force on the suture needle is even, the needle is held firmly and is not easy to fall off. In addition to completing the deep tissue suturing and knot tying in the body, it can also clamp tissue and separate adhesions, which can meet the needs of a variety of surgeries, eliminate the need for frequent instrument changes during the operation, and simplify the surgical procedure. Attached Figure Description

[0018] The invention will now be further described with reference to the accompanying drawings.

[0019] Figure 1 This is a cross-sectional view of the present invention; Figure 2 This is a perspective view of the present invention; Figure 3 This is an exploded view of the long tie rod in this invention; Figure 4 This is an exploded view of the large spring in this invention; Figure 5 This is a schematic diagram of the bending at the first, second, and third snake bone segments in this invention; Figure 6 This is a side view of the first snake-bone segment in this invention; Figure 7 This is a side view of the second snake bone segment in this invention; Figure 8 This is a side view of the third snake bone segment in this invention; Figure 9 This is an exploded view of the external hexagonal tube in this invention; Figure 10 This is a cross-sectional view of the long tie rod in this invention; Figure 11 This is an exploded view of the rear part in this invention; Figure 12 This is a side cross-sectional view of the rear rotor in this invention; Figure 13 This is an exploded side view of the rear rotor in this invention; Figure 14 This is a three-dimensional exploded view of the rear rotor in this invention.

[0020] In the picture: 1. Front handlebar; 2. Rear wheel; 3. Long pull rod; 4. Straight release pliers head; 11. Rear handlebar; 12. Movable groove; 13. Limiting slide bar; 14. Storage groove; 15. Sliding sleeve; 21. Positioning ring; 22. Limiting plate; 23. Front rotating wheel; 24. Positioning sleeve; 25. Positioning insert; 26. Screw; 27. Slot; 28. Sleeve rod; 29. ​​First positioning groove; 210. Connector; 211. Second positioning groove; 31. Spring plate; 32. Short tie rod; 33. Inner sleeve; 34. Outer hexagonal tube; 35. Small spring; 36. Large spring; 37. Outer sleeve; 38. Inner hexagonal tube; 39. First snake-bone section; 310. Second snake-bone section; 311. Third snake-bone section; 312. End tube; 313. First connecting groove; 314. Second connecting groove; 315. PPSU pipe; 41. Connecting block; 42. Rotating piece; 43. Push-pull piece; 44. Push-pull head; 45. Slot; 46. Positioning ear; 47. Positioning pin. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0022] Please see Figures 1-14As shown, a flexible suture device includes a long pull rod 3, an inner sleeve 33 outside the long pull rod 3, and an outer sleeve 37 outside the inner sleeve 33. The long pull rod 3 is used to assist in driving the straight separation forceps head 4 to open and close. The inner sleeve 33 is used to assist in adjusting the bending at the first snake bone segment 39, the second snake bone segment 310, and the third snake bone segment 311. The outer sleeve 37 is used to determine the position of the first snake bone segment 39, the second snake bone segment 310, and the third snake bone segment 311.

[0023] A spring plate 31 is connected to one end of the long pull rod 3 near the inner sleeve 33, and a short pull rod 32 is connected to the other end of the spring plate 31 away from the long pull rod 3. The spring plate 31 is used to adapt to the bending at the first snake bone segment 39, the second snake bone segment 310 and the third snake bone segment 311, and the short pull rod 32 is used to assist in adjusting the opening and closing of the straight separation pliers head 4.

[0024] The outer tube 37 is connected to an inner hexagonal tube 38 at one end near the spring plate 31. The inner hexagonal tube 38 is connected in sequence to a first snake bone segment 39, multiple evenly arranged second snake bone segments 310 and a third snake bone segment 311 at the other end away from the outer tube 37. Through the bending and cooperation of the first snake bone segment 39, the second snake bone segment 310 and the third snake bone segment 311, the straight separation forceps head 4 can bypass the fixation instrument and reach the working area that is difficult for ordinary instruments to reach, such as the rear end of the instrument or the corner of the surgical field.

[0025] The inner sleeve 33 is connected to an outer hexagonal tube 34 at one end near the inner hexagonal tube 38. The outer hexagonal tube 34 is slidably connected inside the inner hexagonal tube 38. The outer hexagonal tube 34, in conjunction with the inner hexagonal tube 38, can ensure the stability of the first snake-bone segment 39, the second snake-bone segment 310, and the third snake-bone segment 311, and prevent the straight separation pliers 4 from causing axial deflection of the first snake-bone segment 39, the second snake-bone segment 310, and the third snake-bone segment 311 when clamping heavy objects.

[0026] A small spring 35 and a large spring 36 are connected to the end of the outer hexagonal tube 34 away from the inner sleeve 33. The small spring 35 and the large spring 36 are both arranged parallel to the spring plate 31. The first snake bone segment 39, the second snake bone segment 310 and the third snake bone segment 311 are respectively provided with a first connecting groove 313 and a second connecting groove 314 at the positions corresponding to the small spring 35 and the large spring 36. The small spring 35 and the large spring 36 are respectively connected in the first connecting groove 313 and the second connecting groove 314. The small spring 35 and the large spring 36 are used to drive the first snake bone segment 39, the second snake bone segment 310 and the third snake bone segment 311 to bend, and are also used to reset the first snake bone segment 39, the second snake bone segment 310 and the third snake bone segment 311.

[0027] The first snake-bone segment 39 consists of a ring and symmetrically arranged connecting ears. The second snake-bone segment 310 consists of a ring and symmetrically arranged connecting ears, with symmetrically arranged ear slots on the ring away from the connecting ears. The connecting ears fit into the ear slots. The third snake-bone segment 311 consists of a ring, with symmetrically arranged ear slots on one end of the ring. The first snake-bone segment 39 is connected to the ear slots of the second snake-bone segment 310 through the connecting ears. Adjacent second snake-bone segments 310 are connected end-to-end through the connecting ears and ear slots. The third snake-bone segment 311 is connected to the connecting ears of the second snake-bone segment 310 at the end away from the first snake-bone segment 39 through the ear slots, thus completing the connection between the first snake-bone segment 39, the second snake-bone segment 310, and the third snake-bone segment 311.

[0028] The second snake bone segment 310 has a height difference at the end closest to the first snake bone segment 39, and the lower height position is in the same position of the second snake bone segment 310 in a straight line. This arrangement ensures that the first snake bone segment 39, the second snake bone segment 310 and the third snake bone segment 311 can bend smoothly when the small spring 35 and the large spring 36 are pushed and pulled.

[0029] It is worth noting that the minimum included angle formed by the bending of the first snake bone segment 39, the second snake bone segment 310, and the third snake bone segment 311 is 140°, that is, the maximum angle that the first snake bone segment 39, the second snake bone segment 310, and the third snake bone segment 311 can bend is 40°.

[0030] The end of the third snake bone segment 311 away from the second snake bone segment 310 is connected to an end tube 312, which is used to connect the third snake bone segment 311 to the positioning ear 46.

[0031] PPSU tubes 315 are provided on the outer side of the outer tube 37, the inner hexagonal tube 38, the first snake-bone section 39, the second snake-bone section 310, the third snake-bone section 311, and the end tube 312. The PPSU tubes 315 are pressed and fixed to the outer tube 37, the inner hexagonal tube 38, the first snake-bone section 39, the second snake-bone section 310, the third snake-bone section 311, and the end tube 312. The PPSU tubes 315 are used to protect the outer tube 37, the inner hexagonal tube 38, the first snake-bone section 39, the second snake-bone section 310, the third snake-bone section 311, and the end tube 312.

[0032] A straight separation pliers head 4 is provided at the end of the short pull rod 32 away from the spring plate 31. A connecting block 41 is connected to the end of the straight separation pliers head 4 near the short pull rod 32. The two connecting blocks 41 are arranged alternately. The connecting blocks 41 are used to determine the rotation position of the straight separation pliers head 4. By arranging them alternately, the two connecting blocks 41 can be prevented from interfering with each other when the straight separation pliers head 4 rotates.

[0033] The end of the end tube 312 near the connecting block 41 is connected to a positioning ear 46. The connecting block 41 is located in the middle of the positioning ear 46. The connecting ear is away from the end tube 312 and a positioning pin 47 is provided at the position corresponding to the connecting block 41. The connecting block 41 and the positioning pin 47 are rotatably connected. Through the cooperation of the connecting ear and the positioning pin 47, the position of the straight separation pliers head 4 and the connecting block 41 can be limited, and the straight separation pliers head 4 can be rotated.

[0034] A rotating plate 42 is rotatably connected to the end of the connecting block 41 away from the straight separation pliers head 4 and the side away from the connecting ear. A push-pull plate 43 is rotatably connected to the side of the rotating plate 42 away from the connecting block 41. A push-pull head 44 is connected to the end of the short pull rod 32 near the push-pull plate 43. A slot 45 is opened on the push-pull plate 43 corresponding to the position of the push-pull head 44. The push-pull head 44 is rotatably connected in the slot 45. Through the cooperation of the push-pull plate 43 and the push-pull head 44, when the long pull rod 3 slides in the inner sleeve 33, the push-pull plate 43 can push or pull the rotating plate 42, thereby pushing or pulling the connecting block 41, so that the straight separation pliers head 4 opens or closes.

[0035] A rear handle 11 is provided at the end of the long pull rod 3 away from the straight separation pliers head 4. A limit slide rod 13 is connected to the end of the long pull rod 3 near the rear handle 11. A storage groove 14 is provided on the rear handle 11 corresponding to the position of the limit slide rod 13. A sliding sleeve 15 is provided in the storage groove 14. The limit slide rod 13 is slidably connected in the sliding sleeve 15. Through the cooperation between the limit slide rod 13 and the sliding sleeve 15, when the rear handle 11 is rotated, the limit slide rod 13 can drive the long pull rod 3 to slide in the inner sleeve 33, thereby driving the straight separation pliers head 4 to open and close.

[0036] The front handle 1 is rotatably connected to the outer side of the rear handle 11 near the long pull rod 3, and the long pull rod 3 passes through the front handle 1. The front handle 1 has a movable groove 12 at the position corresponding to the middle of the rear handle 11. The rear handle 11 is slidably connected in the movable groove 12. The front handle 1 is used to fix the rear rotating wheel 2, the front rotating wheel 23 and the positioning sleeve 24. The rear handle 11 is used to drive the long pull rod 3 to move, thereby adjusting the opening and closing of the straight separation pliers head 4.

[0037] A rear wheel 2 is provided on the side of the front handle 1 away from the rear handle 11. The rear wheel 2 is used to adjust the angle of the straight separation pliers head 4.

[0038] A positioning ring 21 is connected to the side of the rear wheel 2 near the front handlebar 1. A symmetrically arranged limiting plate 22 is connected to the front handlebar 1 at the position corresponding to the positioning ring 21. The positioning ring 21 passes through the front handlebar 1 and is located between the limiting plates 22. The positioning ring 21 cooperates with the limiting plates 22 to position the rear wheel 2, so that the rear wheel 2 is connected to the front handlebar 1.

[0039] A front wheel 23 is provided on the side of the rear wheel 2 away from the front handlebar 1. The front wheel 23 is used to adjust the curvature of the snake joint section.

[0040] A positioning sleeve 24 is provided on the side of the front rotating wheel 23 away from the rear rotating wheel 2. The front rotating wheel 23 abuts against the positioning sleeve 24, and the positioning sleeve 24 is used to help fix the front rotating wheel 23.

[0041] The front rotating wheel 23 is threaded with a screw 26, and the rear rotating wheel 2 is connected with symmetrically arranged positioning plates 25 at the position corresponding to the screw 26. The screw 26 is provided with symmetrically arranged slots 27 at the position corresponding to the positioning plates 25. The positioning plates 25 are inserted into the slots 27. The positioning plates 25 and the slots 27 are used to limit the screw 26 and prevent the screw 26 from deflecting.

[0042] A sleeve 28 is connected to the middle of the screw 26 near the rear rotating wheel 2. The sleeve 28 is slidably connected to the rear rotating wheel 2. The sleeve 28 is used to enhance the stability of the screw 26 and to enhance the connection with the inner sleeve 33.

[0043] The inner sleeve 33 is threadedly fixed to the screw 26 and the sleeve rod 28 on the outside. With this arrangement, when the screw 26 and the sleeve rod 28 move, the inner sleeve 33 can be moved synchronously.

[0044] A connector 210 is inserted into the positioning sleeve 24. The end of the connector 210 near the rear rotating wheel 2 is located between the positioning plates 25. The connector 210 is used to ensure that the ends of the two positioning plates 25 are always in a parallel state, to protect the positioning plates 25, and to prevent the ends of the positioning plates 25 from moving inward and causing the positioning sleeve 24 to fall off.

[0045] The outer side of the PPSU pipe 315 is connected to the inner wall of the connector 210. This arrangement allows the position of the PPSU pipe 315 to be fixed.

[0046] A first positioning groove 29 is provided on the outer side of the positioning insert 25 corresponding to the position of the positioning sleeve 24, and a second positioning groove 211 is provided on the positioning sleeve 24 corresponding to the position of the positioning insert 25. The position of the positioning sleeve 24 near the rear rotating wheel 2 is engaged in the first positioning groove 29, and the end of the positioning insert 25 away from the rear rotating wheel 2 is engaged in the second positioning groove 211. The stability of the positioning sleeve 24 can be ensured through the cooperation of the first positioning groove 29 and the second positioning groove 211.

[0047] In practical use, when using the suture device to suture wounds or clamp tissue during surgery, medical staff hold the front handle 1 and the rear handle 11, and rotate the rear handle 11 upwards. This causes the rear handle 11 to push the long pull rod 3, the spring plate 31, and the short pull rod 32 forward. The long pull rod 3 slides within the inner sleeve 33, causing the push-pull head 44 to push the push-pull plate 43. The push-pull plate 43 pushes the rotating plate 42, creating an angle between the rotating plate 42 and the push-pull plate 43, and pushing the connecting block 41. This opens the straight dissection forceps head 4, allowing the suture needle to be placed between the straight dissection forceps heads 4. Alternatively, after placing the tissue between the straight separation forceps 4, rotate the rear handle 11 downwards, causing the rear handle 11 to pull the long pull rod 3, spring plate 31, and short pull rod 32 backwards. The long pull rod 3 slides within the inner sleeve 33, causing the push-pull head 44 to pull the push-pull plate 43. The push-pull plate 43 pulls the rotating plate 42, making the rotating plate 42 parallel to the push-pull plate 43, and pulling the connecting block 41, causing the straight separation forceps 4 to close, allowing for surgical operations. Furthermore, by opening and closing the straight separation forceps 4, operations such as clamping, separating, and cutting the tissue can be performed. When the angle of the straight separating pliers head 4 needs to be adjusted, rotate the rear wheel 2. Because the screw 26 is threadedly connected to the front wheel 23, and the positioning insert 25 is inserted into the slot 27, and because the positioning sleeve 24 is engaged in the first positioning groove 29 and the positioning insert 25 is engaged in the second positioning groove 211, the rotation of the rear wheel 2 will drive the positioning insert 25, the front wheel 23, the screw 26, the sleeve 28, the positioning sleeve 24, and the connector 210 to rotate synchronously. This is because the screw 26 and the sleeve 28 are connected to the inner sleeve... The PPSU tube 315 is fixed by thread and connected to the inner wall of the connector 210. The PPSU tube 315 is also pressed and fixed to the outer tube 37, the inner hexagonal tube 38, the first snake bone segment 39, the second snake bone segment 310, the third snake bone segment 311 and the end tube 312. Therefore, when the rear rotating wheel 2 is rotated, the straight separation forceps head 4 will rotate synchronously, thereby adjusting the angle of the straight separation forceps head 4. Medical staff do not need to continuously rotate their wrists, forearms or upper arms, which can reduce the operation time and improve the operation efficiency. When bending the first snake-bone segment 39, the second snake-bone segment 310, and the third snake-bone segment 311 is required, the medical staff fixes the rear rotating wheel 2 with one hand. Because the positioning sleeve 24 is engaged in the first positioning groove 29 and the positioning insert 25 is engaged in the second positioning groove 211, fixing the rear rotating wheel 2 also fixes the positioning sleeve 24. After the rear rotating wheel 2 and the positioning sleeve 24 are fixed, the front rotating wheel 23 is rotated according to the arrow. Because the positioning insert 25 is restricted by the rear rotating wheel 2 and the screw 26 is threadedly connected to the front rotating wheel 23, the rotation of the front rotating wheel 23 causes the screw 26 to move within the front rotating wheel 23. When the screw 26 moves, it drives the inner sleeve rod 28, the outer hexagonal tube 34, the small spring 35, and the large spring 36 to move. At the same time, there is a height difference between the ends of the second snake-bone segment 310 and the third snake-bone segment 311 that are closest to the first snake-bone segment 39. When the small spring 35 and the large spring 36 move, they simultaneously generate pushing and pulling forces on both sides of the first snake bone segment 39, the second snake bone segment 310, and the third snake bone segment 311, thereby causing the first snake bone segment 39, the second snake bone segment 310, and the third snake bone segment 311 to bend. By controlling the amount of movement of the small spring 35 and the large spring 36, the degree of bending of the first snake bone segment 39, the second snake bone segment 310, and the third snake bone segment 311 can be controlled. When the first snake bone segment 39, the second snake bone segment 310, and the third snake bone segment 311 bend, the spring plate 31 bends, and drives the straight dissecting forceps head 4 to perform curved motion. This allows the straight dissecting forceps head 4 or the front end of the suture to bypass the fixation instrument and reach working areas that are difficult for ordinary instruments to reach, such as the rear end of the instrument or the corner of the surgical field, thus ensuring suturing accuracy and surgical efficiency.

[0048] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0049] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention.

Claims

1. A flexible suture device, characterized in that: Includes a long pull rod (3), the long pull rod (3) is provided with an inner sleeve (33) on the outside, and an outer sleeve (37) is provided on the outside of the inner sleeve (33). The end of the outer sleeve (37) near the spring plate (31) is connected to an inner hexagonal tube (38). The end of the inner hexagonal tube (38) away from the outer sleeve (37) is connected in sequence to a first snake bone segment (39), a plurality of evenly arranged second snake bone segments (310) and a third snake bone segment (311). The inner sleeve (33) is connected to an outer hexagonal tube (34) at one end near the inner hexagonal tube (38). The outer hexagonal tube (34) is slidably connected inside the inner hexagonal tube (38). The outer hexagonal tube (34) is connected to a small spring (35) and a large spring (36) at the other end away from the inner sleeve (33). The small spring (35) and the large spring (36) are both arranged parallel to the spring plate (31). The first snake bone segment (39), the second snake bone segment (310) and the third snake bone segment (311) are respectively provided with a first connecting groove (313) and a second connecting groove (314) at the positions corresponding to the small spring (35) and the large spring (36).

2. The flexible suture device according to claim 1, characterized in that: The first snake bone segment (39) is composed of a circular ring and symmetrically arranged connecting ears. The second snake bone segment (310) is composed of a circular ring and symmetrically arranged connecting ears, and the circular ring has symmetrically arranged ear grooves at a position away from the connecting ears. The connecting ears and ear grooves are adapted to each other. The third snake bone segment (311) is composed of a circular ring, and one end of the circular ring has symmetrically arranged ear grooves.

3. A flexible suture device according to claim 2, characterized in that: The first snake bone segment (39) is connected to the ear groove of the second snake bone segment (310) through a connecting ear. Adjacent second snake bone segments (310) are connected end to end through connecting ears and ear grooves. The third snake bone segment (311) is connected to the connecting ear of the end of the second snake bone segment (310) away from the first snake bone segment (39) through an ear groove.

4. A flexible suture device according to claim 3, characterized in that: The second snake bone segment (310) has a height difference at the end near the first snake bone segment (39), and the lower height position is located at the same position of the second snake bone segment (310) in a straight line.

5. A flexible suture device according to claim 4, characterized in that: The long pull rod (3) is connected to a spring plate (31) at one end near the inner sleeve (33), and a short pull rod (32) is connected to the end of the spring plate (31) away from the long pull rod (3). A straight separation pliers head (4) is provided at the end of the short pull rod (32) away from the spring plate (31).

6. A flexible suture device according to claim 5, characterized in that: The long pull rod (3) is provided with a rear handle (11) at the end away from the straight separation pliers (4). The rear handle (11) is rotatably connected to the outer side of the end near the long pull rod (3), and the long pull rod (3) passes through the front handle (1). The front handle (1) is provided with a rear wheel (2) on the side away from the rear handle (11).

7. A flexible suture device according to claim 6, characterized in that: The rear wheel (2) is provided with a front wheel (23) on the side away from the front handle (1). The front wheel (23) is provided with a positioning sleeve (24) on the side away from the rear wheel (2). The inner side of the front wheel (23) is threaded with a screw (26). The rear wheel (2) is connected with symmetrically arranged positioning inserts (25) at the position corresponding to the screw (26). The screw (26) is provided with symmetrically arranged slots (27) at the position corresponding to the positioning inserts (25).

8. A flexible suture device according to claim 7, characterized in that: The screw (26) is connected to a sleeve (28) in the middle of one side near the rear wheel (2). The sleeve (28) is slidably connected to the rear wheel (2). The outer side of the inner sleeve (33) is threadedly fixed to the screw (26) and the sleeve (28). A connector (210) is inserted into the positioning sleeve (24). The end of the connector (210) near the rear wheel (2) is located between the positioning inserts (25).

9. A flexible suture device according to claim 8, characterized in that: The positioning insert (25) has a first positioning groove (29) on the outer side corresponding to the positioning sleeve (24), and the positioning sleeve (24) has a second positioning groove (211) corresponding to the positioning insert (25). The positioning sleeve (24) is engaged in the first positioning groove (29) near the rear wheel (2), and the end of the positioning insert (25) away from the rear wheel (2) is engaged in the second positioning groove (211).

10. A flexible suture device according to claim 9, characterized in that: The medical staff fixes the rear rotating wheel (2) with one hand and rotates the front rotating wheel (23) according to the arrow markings. The rotation of the front rotating wheel (23) causes the screw (26) to move inside the front rotating wheel (23). The movement of the screw (26) drives the inner sleeve rod (28), the outer hexagonal tube (34), the small spring (35), and the large spring (36) to move. Because there is a height difference between the second snake bone segment (310) and the third snake bone segment (311) near the end of the first snake bone segment (39), the small spring (35) and the large spring... (36) When moving, the first snake bone segment (39), the second snake bone segment (310) and the third snake bone segment (311) will be pushed and pulled on both sides at the same time, thereby causing the first snake bone segment (39), the second snake bone segment (310) and the third snake bone segment (311) to bend. By controlling the amount of movement of the small spring (35) and the large spring (36), the degree of bending of the first snake bone segment (39), the second snake bone segment (310) and the third snake bone segment (311) can be controlled.

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