Disposable fibrous ring stitching instrument under total endoscope

Abstract

The invention relates to the technical field of fibrous ring suturing instruments, and discloses a disposable total endoscopic fibrous ring suturing instrument which is characterized in that a clip at one end of a suture line is clamped in a clip mounting groove, and the other end of the suture line bypasses a guide wheel to penetrate between two pressing wheels and drives the pressing wheel above to press downwards; the other end of the suture line can be clamped between the two pressing wheels by rotating the two pressing wheels, so that the suture line is more convenient and faster to install, the line installing difficulty is reduced, the positioning effect on the end part of the suture line is improved, and the positioning operation is simple and convenient; the wire inlet driving mechanism pushes the wire guide mechanism to move in the push rod, the wire guide pipe can push the clamp to be gradually separated from the needle head, when the wire inlet guide wheel rotates, the teeth on the wire inlet guide wheel abut against the elastic and retractable wire inlet limiting mechanism, the teeth make contact with the wire inlet limiting mechanism at a time to complete a section of wire inlet process, and the wire feeding process of a suture line can be completed after contact is conducted three times. The clip is pushed out of the needle head and is clamped on the inner wall of the incision, so that the feeding rhythm of the suture line is convenient to control.

Description

Technical Field

[0001] The invention relates to the technical field of fiber ring suture devices, in particular to a disposable fully endoscopic fiber ring suture device. Background Art

[0002] The annulus suture device is a high-end medical product specially designed for orthopedic disc repair surgery. It has a good functional layout and human-machine experience. The doctor can complete the operation with one hand to suture and repair the incision of the annulus fibrosus of the intervertebral disc, thereby restoring the integrity of the annulus fibrosus. After the nucleus pulposus of the herniated intervertebral disc is removed under spinal endoscopy, the annulus suture device uses double needle puncture, suture delivery, automatic knotting and other technologies to suture the annulus fibrosus rupture. This process can significantly reduce the recurrence rate of the residual nucleus pulposus in the intervertebral disc protruding from the annulus fibrosus rupture after being stressed, and reduce the risk of postoperative scar formation and nerve root adhesion.

[0003] After searching, the patent with application number CN202322893513.7 discloses a new fiber ring suture device, including a handle, a receiving cavity is arranged in the handle along its length direction, a sliding push block is arranged in the receiving cavity, the sliding push block is horizontally slidably arranged in the receiving cavity, a clamping mouth is arranged at the end of the handle away from the receiving cavity, a puncture needle is connected in the clamping mouth, a clamping assembly for fixing the puncture needle is arranged at the clamping mouth, a guide wire is connected to the end of the sliding push block close to the clamping mouth, the guide wire passes through the receiving cavity and enters the puncture needle, an elastic member is arranged in the receiving cavity, the elastic member is arranged between the sliding push block and the clamping mouth, a horizontally arranged sliding long hole is opened on the outer wall of the handle, and a thrust plate is connected to the sliding push block. The new limit ring suture device described in the utility model has the advantages of simple operation, automatic rebound of the guide wire, and convenient and quick replacement of the puncture needle.

[0004] The suture of the fiber ring suture device is very thin, only about 0.02m. The current process of installing the suture is relatively complicated and difficult to operate. After the suture is installed, it is not convenient to position the end of the suture, which easily leads to the suture being in a loose state, which is not conducive to the entry of the suture. When pushing the suture (connecting the end clip) into the inner wall of the incision, the doctor usually manually pushes the push plate to drive the guide wire to move in the push rod, and uses the guide wire to push the suture out of the needle. This process is pushed into place at one time (i.e., a one-step entry path), which makes the intermediate process difficult to control. Therefore, we need to propose a disposable fully endoscopic fiber ring suture device. Summary of the invention

[0005] The object of the present invention is to provide a disposable fully endoscopic fiber ring suture device. Through the design of the wire guide tube and the wire pressing mechanism, it is convenient to pass the suture from the needle end into the wire guide tube, and pass it out of the outer shell along the vertical opening of the wire guide tube, and clamp the clip at one end of the suture in the clip installation groove, and the other end of the suture bypasses the guide wheel and passes between the two pressing wheels, and the upper pressing wheel is driven to press down, so that the other end of the suture can be clamped between the two pressing wheels, which not only makes the installation of the suture more convenient and quick, reduces the difficulty of thread installation, and improves the positioning effect of the end of the suture, and the positioning operation is simple and convenient, so that the suture is in a tight position after installation. The wire guide wheel is in a stretched state, which is beneficial to the subsequent wire feeding operation; through the design of the wire feeding guide wheel cooperating with the wire feeding limiting mechanism, the wire feeding guide wheel is pushed forward to drive it to rotate, and the push block is driven to rotate under the cooperation of the rotating shaft, the pulley and the belt, and the wire guiding mechanism is pushed to move in the push rod, so that the wire guiding tube can push the clip to gradually separate from the needle head, and when the wire feeding guide wheel rotates, the teeth on it will conflict with the elastic and retractable wire feeding limiting mechanism, and the two will complete a wire feeding process after one contact, and the threading process of the suture thread can be completed after three contacts, and the clip will be pushed out of the needle head and will be stuck on the inner wall of the incision, which is convenient for controlling the wire feeding rhythm of the suture thread, so as to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a disposable fully endoscopic fiber ring suture device, comprising a shell, a push rod and a needle with a bent end connected in sequence and used to clamp a clip on one end of a suture, the inside of the shell is provided with a guide wire mechanism that runs through the inside of the push rod and is used to push the suture into place, the inside of the shell is also provided with a wire feed drive mechanism that drives the guide wire mechanism to move, and the wire feed drive mechanism is configured as a wire feed drive mechanism that drives the three-stage wire feed of the suture;

[0007] The wire feed drive mechanism is rotatably arranged, and a wire feed limiter mechanism which can elastically contract and limit the rotation process of the wire feed drive mechanism is installed inside the shell, and a wire pressing mechanism for clamping the other end of the suture thread is installed on the shell.

[0008] Preferably, a first through hole is opened on the outer shell, and the inlet wire driving mechanism includes an inlet wire guide wheel rotatably installed inside the first through hole, and the outer wall of the inlet wire guide wheel is provided with annular teeth arranged equidistantly, and the inlet wire limiting mechanism is arranged corresponding to the teeth on the inlet wire guide wheel. A first rotating shaft is also rotatably installed inside the outer shell, and the inlet wire guide wheel is sleeved on the outer wall of the first rotating shaft.

[0009] Preferably, a second rotating shaft is rotatably mounted inside the housing, and pulleys are sleeved on the outer walls of the first rotating shaft and the outer walls of the second rotating shaft. The two pulleys are connected by a belt drive, and a push block is also connected to the second rotating shaft.

[0010] Preferably, the guide wire mechanism includes a push plate near the push block and a limit plate fixed on the inner wall of the housing. A second spring is connected between the push plate and the limit plate. A limit post is also connected to the push plate. A limit hole is formed on the limit plate, and the limit post slides inside the limit hole.

[0011] Preferably, an L-shaped guide wire tube is slidably inserted into the center position of the limit plate. One end of the guide wire tube passes through the housing and is located inside the push rod. One end of the guide wire tube is connected to a flexible tube. A card slot is formed on the push plate, and the vertical portion of the guide wire tube is installed inside the card slot.

[0012] Preferably, a second through hole is also formed at the top of the housing. An arc chamfer for preventing the suture from being scratched is provided at the upper end of the inner wall of the second through hole. The second through hole is aligned with the other end of the guide wire tube.

[0013] Preferably, the wire pressing mechanism includes a first bracket fixed on the housing and a second bracket fixed on the first bracket. A guide wheel is rotatably installed inside the first bracket. A guide groove is formed at the middle position of the outer wall of the guide wheel. A first pressing wheel and a second pressing wheel arranged vertically are respectively rotatably installed inside the second bracket. The second pressing wheel is located above the first pressing wheel.

[0014] Preferably, a first wire clamping groove is formed at the middle position of the outer wall of the first pressing wheel, and a second wire clamping groove is formed at the middle position of the outer wall of the second pressing wheel. Sliding grooves are formed on the two inner side walls of the second bracket. Sliders are slidably installed up and down inside the sliding grooves. The end of the second pressing wheel is rotatably installed on the slider, and a first spring is connected between the bottom of the slider and the inner bottom of the sliding groove.

[0015] Preferably, a U-shaped fixing frame is connected between the two sliders. A threaded column is threadedly installed on the second bracket, and the bottom of the threaded column is rotatably connected to a pressing plate for pressing the fixing frame downward.

[0016] Preferably, the incoming wire limiting mechanism includes a base fixed inside the housing and a limit block located above the base. The two side surfaces of the limit block are inclined planes. A third spring is connected between the base and the limit block. A slot is formed on the base, and a plug post is connected to the bottom of the limit block. The plug post is slidably inserted into the slot.

[0017] Compared with the prior art, the beneficial effects of the present invention are:

[0018] 1. The present invention facilitates the insertion of the suture thread from the needle end into the wire guide tube through the design of the wire guide tube and the wire pressing mechanism, and passes through the outside of the shell along the vertical opening of the wire guide tube, and the clip at one end of the suture thread is clamped in the clip installation groove, and the other end of the suture thread bypasses the guide wheel and passes between the two clamping wheels, and the upper clamping wheel is driven to press down, so that the other end of the suture thread can be clamped between the two clamping wheels, which not only makes the installation of the suture thread more convenient and quick, reduces the difficulty of thread installation, but also improves the positioning effect of the end of the suture thread, and the positioning operation is simple and convenient, so that the suture thread is in a taut state after installation, which is beneficial to the subsequent thread feeding operation.

[0019] 2. The present invention cooperates with the design of the wire feed guide wheel to drive the wire feed guide wheel to rotate by pushing it forward. The push block is driven to rotate under the cooperation of the rotating shaft, the pulley and the belt, and the wire guide mechanism is pushed to move in the push rod, so that the wire guide tube can push the clip to gradually separate from the needle. When the wire feed guide wheel rotates, the teeth on it will conflict with the elastic and retractable wire feed limiting mechanism. The two will complete a wire feeding process after one contact. After three contacts, the thread threading process of the suture thread can be completed. The clip is pushed out of the needle and will be stuck on the inner wall of the incision, which is convenient for controlling the wire feeding rhythm of the suture thread.

[0020] 3. The present invention is simple and safe to operate, can be completed independently by one person, causes little damage to tissues during puncture, causes little bleeding, and leaves no foreign matter residue. It is produced and sterilized in one go, and has no risk of infection. It solves the problem that traditional suturing methods cannot perform deep suturing, and single-needle puncture is simpler and is applicable to conventional hole mirrors, meeting the suturing needs under various surgical methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a schematic diagram of the internal structure of the present invention;

[0023] Figure 3 It is a structural schematic diagram of the wire feed drive mechanism and the wire guide mechanism of the present invention;

[0024] Figure 4 It is a structural schematic diagram of the push rod, needle head and wire guide tube of the present invention;

[0025] Figure 5 It is a structural schematic diagram of the wire pressing mechanism of the present invention;

[0026] Figure 6 It is a structural schematic diagram of the line-in limiting mechanism of the present invention;

[0027] Figure 7 It is a structural schematic diagram of the needle and the clip installation groove of the present invention;

[0028] Figure 8It is a schematic structural diagram of a suture thread and an end clip thereof according to the present invention.

[0029] In the figure: 1, housing; 11, first through hole; 12, second through hole; 2, push rod; 3, needle; 31, clip mounting slot;

[0030] 4. Inlet drive mechanism; 41. Inlet guide wheel; 42. First rotating shaft; 43. Second rotating shaft; 44. Pulley; 45. Belt; 46. Push block;

[0031] 5. Wire pressing mechanism; 51. First bracket; 52. Guide wheel; 53. Guide groove; 54. Second bracket; 55. First clamping wheel; 551. First wire clamping groove; 56. Second clamping wheel; 561. Second wire clamping groove; 57. Sliding block; 58. Fixed frame; 59. First spring; 510. Sliding groove; 511. Threaded column; 512. Pressing plate;

[0032] 6. Wire guide mechanism; 61. Push plate; 62. Card slot; 63. Limit plate; 64. Wire guide tube; 65. Second spring; 66. Limit column; 67. Limit hole; 68. Hose;

[0033] 7. Inlet limiting mechanism; 71. Base; 72. Slot; 73. Limiting block; 74. Third spring; 75. Plug column. DETAILED DESCRIPTION

[0034] 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 without creative work are within the scope of protection of the present invention.

[0035] See also Figure 1-8 The present invention provides a disposable fully endoscopic fiber ring suture device, comprising a shell 1, a push rod 2 and a needle 3 with a bent end portion connected in sequence and used to clamp a clip on one end of a suture, so as to limit the clip and prevent it from opening automatically. A guide wire mechanism 6 that penetrates through the push rod 2 and is used to push the suture into place is arranged inside the shell 1. A wire feed drive mechanism 4 that drives the guide wire mechanism 6 to move is also installed inside the shell 1. The wire feed drive mechanism 4 is arranged to be a wire feed drive mechanism that drives the three-stage feeding of the suture.

[0036] like Figure 7 and Figure 8 As shown, the inner wall of the needle 3 is provided with a clip mounting groove 31 for fixing the clip on one end of the suture, and one end of the clip mounting groove 31 passes through the end side wall of the needle 3, so as to facilitate the detachment of the clip of the suture from the clip mounting groove 31 and the needle 3.

[0037] The depth of the clip installation groove 31 exceeds the radius of the clip, that is, the clip installation groove 31 can wrap more than half of the volume of the clip, preventing the clip from directly escaping from the clip installation groove 31 along the radial direction of the needle 3.

[0038] It is worth noting that the clip at the end of the suture is cylindrical, and the end of the suture is connected to the middle position of the outer wall of the clip. When the clip enters the incision, the suture is pulled backward so that the pressure exerted on the inner wall of the incision by both ends of the clip is the same (if the end of the suture is not connected to the middle position of the outer wall of the clip, when the clip is pulled, one end of the clip will exert too much pressure on the inner wall of the incision, or even squeeze the inner wall of the incision, causing the outside of the incision to bulge, and the other end of the clip will be raised and not in contact with the inner wall of the incision, reducing the suturing effect), and ensure that the clip can fit on the inner wall of the incision.

[0039] The wire-feeding driving mechanism 4 pushes the wire-guiding mechanism 6 to move inside the push rod 2, so that the wire-guiding mechanism 6 pushes the clip at the end of the suture thread to separate from the needle 3 and enter the inside of the incision.

[0040] Specifically, the rotation of the wire driving mechanism 4 will push the wire guide mechanism 6 to move. After the end of the wire guide mechanism 6 enters the needle 3, it will contact the clip at the end of the suture and push the end of the clip to slide inside the clip mounting groove 31 until the clip is separated from the clip mounting groove 31. At the moment when the clip is separated from the clip mounting groove 31, since the curved part where the end of the suture is connected to the clip is in a restored shape, the clip is rotated by the elastic force of the suture, and the rotation angle is about 90 degrees, that is, the clip goes out vertically from the clip mounting groove 31, and then the clip will open, and as the suture is pulled back, the clip is laterally supported (fitted) on the inner wall of the incision.

[0041] like Figure 4 and Figure 5 As shown, the wire feed drive mechanism 4 is rotatably arranged, and a wire feed limiter mechanism 7 which can elastically contract and limit the rotation process of the wire feed drive mechanism 4 is installed inside the housing 1, and a wire pressing mechanism 5 for clamping the other end of the suture thread is installed on the housing 1.

[0042] After the suture is clamped, it will not move without the use of external force. The suture will only move when tension is applied to the other end of the suture. The suture will move in a directional manner under the restriction of the wire pressing mechanism 5, which is convenient for adjusting the tension of the suture and the subsequent wire pulling operation.

[0043] like Figure 3As shown, a first through hole 11 is provided on the housing 1, and the wire-intake driving mechanism 4 includes a wire-intake guide wheel 41 rotatably mounted inside the first through hole 11. Specifically, the wire-intake guide wheel 41 is provided with a forward-indicating arrow and a backward-indicating arrow for distinguishing and prompting the forward or backward rotation of the wire-intake guide wheel 41, and a number (1 / 2 / 3) located between the two arrows is also provided on the wire-intake guide wheel 41, and the number 1 indicates that the wire-intake guide wheel 41 is pushed forward by a distance of a tooth pitch, and pushing it three times indicates that the three-stage wire-intake is completed;

[0044] The outer wall of the inlet wire guide wheel 41 is provided with annular teeth arranged equidistantly, and the inlet wire limiting mechanism 7 is arranged corresponding to the teeth on the inlet wire guide wheel 41. A first rotating shaft 42 is also rotatably installed inside the housing 1, and the inlet wire guide wheel 41 is sleeved on the outer wall of the first rotating shaft 42.

[0045] Through the contact between the teeth and the thread-feeding limiting mechanism 7, the thread-feeding degree is limited during the thread-feeding process to prevent all the threads from being fed in at once. The thread-feeding depth is controlled during the thread-feeding process to prevent excessive thread feeding. Through the multi-stage thread-feeding operation, the thread-feeding rhythm of the suture thread can be easily controlled.

[0046] The housing 1 is provided with a thread pressing mechanism 5 for clamping the other end of the suture thread and tightening the suture thread.

[0047] It should also be noted that if Figure 3 As shown, a second rotating shaft 43 is rotatably mounted inside the housing 1, and pulleys 44 are sleeved on the outer walls of the first rotating shaft 42 and the outer walls of the second rotating shaft 43. The two pulleys 44 are connected by a belt 45, and a push block 46 is also connected to the second rotating shaft 43.

[0048] The wire-in guide wheel 41 is pushed forward to rotate, and the push block 46 is driven to rotate with the cooperation of the two shafts, the pulley 44 and the belt 45. That is, the first shaft 42 is driven to rotate by pushing the teeth on the wire-in guide wheel 41. The first shaft 42 drives the second shaft 43 to rotate through the belt 45 and the pulley 44, and then drives the push block 46 to rotate. The push block 46 can rotate to a position where it contacts and disposes with the push plate 61 at most.

[0049] like Figure 3 As shown, the wire guiding mechanism 6 includes a push plate 61 close to the push block 46 and a limit plate 63 fixed on the inner wall of the outer shell 1. The push plate 61 is configured as a circular plate. A second spring 65 is connected between the push plate 61 and the limit plate 63. A limit column 66 is also connected to the push plate 61. A limit hole 67 is provided on the limit plate 63. The diameter of the limit column 66 is equal to the inner diameter of the limit hole 67. The limit column 66 slides inside the limit hole 67 to ensure the stability of the push plate 61 during its movement.

[0050] An L-shaped wire guide tube 64 is slidably inserted in the center position of the limiting plate 63. The L-shaped wire guide tube 64 includes a horizontal tube portion and a vertical tube portion. The connection position between the horizontal tube portion and the vertical tube portion is bent to facilitate the passage of the suture thread. One end of the wire guide tube 64 (i.e., one end of the horizontal tube portion on the wire guide tube 64) passes through the shell 1 and is located inside the push rod 2, and one end of the wire guide tube 64 is connected to a hose 68. A slot 62 is provided on the push plate 61, and the vertical portion of the wire guide tube 64 is installed inside the slot 62. After the wire is successfully fed in, the wire feed guide wheel 41 is reversed. After the resistance to the push plate 61 is cancelled, the push plate 61 moves toward the direction close to the wire feed guide wheel 41 under the elastic force of the second spring 65, thereby driving the wire guide tube 64 to retreat.

[0051] The push block 46 moves against the push plate 61, the second spring 65 is compressed, and drives the wire guide tube 64 to move. When the hose 68 at the end of the wire guide tube 64 enters the curved part of the needle 3, it is deformed;

[0052] like Figure 1-2 As shown, a second through hole 12 is also provided on the top of the housing 1, and an arc chamfer is provided on the upper end of the inner wall of the second through hole 12 to prevent the suture from being scratched. The second through hole 12 is aligned with the other end of the wire guide tube 64 to facilitate leading out the end of the suture.

[0053] like Figure 5 As shown, the thread pressing mechanism 5 includes a first bracket 51 fixed on the shell 1, and a second bracket 54 fixed on the first bracket 51. A guide wheel 52 is rotatably installed inside the first bracket 51, and a guide groove 53 is provided in the middle position of the outer wall of the guide wheel 52. A first clamping wheel 55 and a second clamping wheel 56 are rotatably installed inside the second bracket 54, and the second clamping wheel 56 is located above the first clamping wheel 55, and the second clamping wheel 56 can move up and down to cooperate with the first clamping wheel 55 to clamp the suture thread.

[0054] Specifically, notches are provided on both sides of the surface of the first bracket 51 , that is, the first bracket 51 is in an I-shape when viewed from above, so as to avoid the suture line and prevent the suture line from interfering with the first bracket 51 .

[0055] A first wire clamping groove 551 is provided in the middle position of the outer wall of the first clamping wheel 55, and a second wire clamping groove 561 is provided in the middle position of the outer wall of the second clamping wheel 56. To ensure the stability of the suture, the guide groove 53, the first wire clamping groove 551, and the second wire clamping groove 561 are located in the same vertical plane. A slide groove 510 is provided on the two inner side walls of the second bracket 54. A slider 57 is installed inside the slide groove 510 for sliding up and down. The end of the second clamping wheel 56 is rotatably installed on the slider 57, and a first spring 59 is connected between the bottom of the slider 57 and the inner bottom of the slide groove 510. After the downward pressure on the second clamping wheel 56 is cancelled, the second clamping wheel 56 is automatically pushed upward by the elastic force of the first spring 59.

[0056] A U-shaped fixing frame 58 is connected between the two sliders 57. A threaded post 511 is installed on the second bracket 54 by threading. The bottom of the threaded post 511 is rotatably connected to a pressing plate 512 for pressing the fixing frame 58 downward. By turning the threaded post 511, the pressing plate 512 is driven to move downward and abut against the fixing frame 58.

[0057] After the suture is led out from the first through hole 11, the suture is passed under the guiding wheel 52 and stuck inside the guiding groove 53. Then the end of the suture is pulled out by turning it upward, and then horizontally passed again between the first pressing wheel 55 and the second pressing wheel 56. First, the suture is placed inside the first wire clamping groove 551. Then, the threaded post 511 is turned to drive the pressing plate 512 to move downward, so that the pressing plate 512 abuts against the top of the fixing frame 58. Subsequently, the pressing plate 512 pushes the fixing frame 58 to move downward, and the fixing frame 58 drives the slider 57 to slide downward inside the sliding groove 510, that is, drives the second pressing wheel 56 to move downward, and the first spring 59 is compressed, so that the suture can be clamped between the first wire clamping groove 551 and the second wire clamping groove 561, so that the suture will not move without external force.

[0058] As Figure 6 shown, the incoming wire limiting mechanism 7 is installed at the corner inside the housing 1. The incoming wire limiting mechanism 7 includes a base 71 fixed inside the housing 1 and a limiting block 73 above the base 71. The two side surfaces of the limiting block 73 are inclined surfaces, and the top surface of the limiting block 73 is an arc surface. When the teeth on the incoming wire guiding wheel 41 contact this inclined surface, it is convenient to push the limiting block 73 to move. A third spring 74 is connected between the base 71 and the limiting block 73. A slot 72 is opened on the base 71, and a plug post 75 is connected to the bottom of the limiting block 73. The plug post 75 is slidably inserted inside the slot 72. The cooperation of the plug post 75 and the slot 72 can ensure the stability of the limiting block 73 during the moving process. The third spring 74 is used to push the squeezed limiting block 73 to reset.

[0059] During the rotation of the incoming wire guiding wheel 41, the teeth on it will abut against the inclined surface of the limiting block 73 in the incoming wire limiting mechanism 7. The limiting block 73 is squeezed and moves downward, the third spring 74 is compressed, and the plug post 75 slides inside the slot 72. The incoming wire guiding wheel 41 contacts the limiting block 73 in the incoming wire limiting mechanism 7 once to complete a section of incoming wire process. Then, during the process of the limiting block 73 moving from abutting against the teeth to moving between two teeth, the teeth gradually disengage from the limiting block 73. Under the elastic force of the third spring 74, the limiting block 73 is pushed upward to reset. When the teeth contact the limiting block 73 three times, the three-stage incoming wire can be completed, realizing the steady incoming wire of the suture.

[0060] When in use, take out the suture, pass one end of the suture (the end without the clip) from the position of the needle 3, and pass through the first through hole 11 along the hose 68 and the wire guide tube 64 (the end of the suture is bent upward at the arc portion at the turning point of the L-shaped wire guide tube 64), and insert the clip on the other end of the suture into the inside of the clip installation groove 31 to limit the clip and prevent it from opening automatically, and then start to clamp and limit one end of the suture;

[0061] The first spring 59 is squeezed to clamp the suture thread between the first clamping groove 551 and the second clamping groove 561, so that the suture thread will not move without external force, and the suture thread can continue to be pulled away from the push rod 2 to tighten the suture thread, which is convenient for subsequent thread feeding.

[0062] Then, when the suture bracket is installed, with the cooperation of the endoscope, the push rod 2 and one end of the needle 3 are inserted into the body along the pipe of the bracket, and the needle 3 is moved to a position 5mm close to the incision, and the needle 3 is inserted (the insertion depth is about 10mm), and then the wire guide wheel 41 is pushed forward to rotate the wire guide wheel 41, and the push block 46 is driven to rotate under the cooperation of the two rotating shafts, the pulley 44 and the belt 45, and the push block 46 moves against the push plate 61, and the second spring 65 is compressed, and drives the guide wire tube 64 to move, and the hose 68 at the end of the guide wire tube 64 is deformed when it enters the curved part of the needle 3;

[0063] During the rotation of the wire feeding guide wheel 41, the teeth on it will conflict with the inclined surface of the limit block 73 in the wire feeding limit mechanism 7, the limit block 73 is squeezed and moved downward, the third spring 74 is compressed, and the plug post 75 slides inside the slot 72, the wire feeding guide wheel 41 contacts the limit block 73 in the wire feeding limit mechanism 7 once, and a wire feeding process is completed. In order to ensure the stability and controllability of the wire feeding process, the limit block 73 in the wire feeding limit mechanism 7 contacts three times to complete the wire feeding operation of the suture thread, and the clip will withdraw from the clip installation groove 31. As the hose 68 continues to penetrate, the hose 68 contacts the clip and pushes the clip out of the clip installation groove 31, and the clip changes direction;

[0064] Then, the needle 3 is withdrawn, and the clip is driven to be clamped horizontally on the inner wall of the incision, and the threaded column 511 is rotated in the opposite direction to drive the pressing plate 512 to move up, cancel the pressing of the fixing frame 58, and push the slider 57 to move up under the elastic force of the first spring 59, that is, drive the second pressing wheel 56 to move up, cancel the positioning of the suture, and withdraw the device. Similarly, another fiber ring suture device is taken to introduce the suture into the other side of the incision. The specific steps are the same as above and will not be repeated.

[0065] After both sutures are inserted, tie a knot between the two sutures and use a knot pusher to tighten the knot. At least three knots need to be tied. Finally, use a special fiber ring wire cutter to cut the suture. The wire cutter has a 90-degree turn design and leaves 2mm of thread end space on the blade head, which can effectively prevent the thread end from being too long or the knot from being cut off.

[0066] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A disposable fully endoscopic fiber ring suture device, characterized by: The invention comprises a shell (1), a push rod (2), and a needle (3) with a bent end portion connected in sequence and used to clamp a clip on one end of a suture thread. The shell (1) is provided with a wire guide mechanism (6) penetrating the inside of the push rod (2) and used to push the suture thread into place. The shell (1) is also provided with a wire feed drive mechanism (4) for driving the wire guide mechanism (6) to move. The wire feed drive mechanism (4) is configured as a wire feed drive mechanism for driving the three-stage wire feed of the suture thread. The wire feed drive mechanism (4) is rotatably arranged, and a wire feed limiter mechanism (7) is installed inside the housing (1) and is elastically contractible and limits the rotation process of the wire feed drive mechanism (4). A wire pressing mechanism (5) for clamping the other end of the suture thread is installed on the housing (1).

2. The disposable fully endoscopic fiber ring suture device according to claim 1, characterized in that: The housing (1) is provided with a first through hole (11), the wire-in-feed driving mechanism (4) comprises a wire-in-feed guide wheel (41) rotatably mounted inside the first through hole (11), the outer wall of the wire-in-feed guide wheel (41) is provided with annular teeth equidistantly arranged, the wire-in-feed limiting mechanism (7) is arranged corresponding to the teeth on the wire-in-feed guide wheel (41), and a first rotating shaft (42) is also rotatably mounted inside the housing (1), and the wire-in-feed guide wheel (41) is sleeved on the outer wall of the first rotating shaft (42).

3. The disposable fully endoscopic fiber ring suture device according to claim 2, characterized in that: A second rotating shaft (43) is rotatably mounted inside the housing (1); pulleys (44) are sleeved on the outer walls of the first rotating shaft (42) and the second rotating shaft (43); the two pulleys (44) are connected to each other through a belt (45); and a push block (46) is also connected to the second rotating shaft (43).

4. The disposable fully endoscopic fiber ring suture device according to claim 3, characterized in that: The wire guiding mechanism (6) comprises a push plate (61) close to the push block (46) and a limit plate (63) fixed on the inner wall of the housing (1); a second spring (65) is connected between the push plate (61) and the limit plate (63); a limit column (66) is also connected to the push plate (61); a limit hole (67) is provided on the limit plate (63); and the limit column (66) slides inside the limit hole (67).

5. The disposable fully endoscopic fiber ring suture device according to claim 4, characterized in that: An L-shaped wire guide tube (64) is slidably inserted into the center position of the limiting plate (63), one end of the wire guide tube (64) passes through the outer shell (1) and is located inside the push rod (2), and one end of the wire guide tube (64) is connected to a hose (68), and a slot (62) is provided on the push plate (61), and the vertical portion of the wire guide tube (64) is installed inside the slot (62).

6. The disposable fully endoscopic fiber ring suture device according to claim 5, characterized in that: A second through hole (12) is also provided on the top of the housing (1), and an arc chamfer is provided on the upper end of the inner wall of the second through hole (12) to prevent the suture thread from being scratched, and the second through hole (12) is aligned with the other end of the guide wire tube (64).

7. The disposable fully endoscopic fiber ring suture device according to claim 1, characterized in that: The wire pressing mechanism (5) comprises a first bracket (51) fixed on the housing (1), and a second bracket (54) fixed on the first bracket (51); a guide wheel (52) is rotatably mounted inside the first bracket (51); a guide groove (53) is provided at the middle position of the outer wall of the guide wheel (52); a first clamping wheel (55) and a second clamping wheel (56) are rotatably mounted inside the second bracket (54), and the second clamping wheel (56) is located above the first clamping wheel (55).

8. The disposable fully endoscopic fiber ring suture device according to claim 7, characterized in that: A first wire clamping groove (551) is provided in the middle of the outer wall of the first clamping wheel (55), a second wire clamping groove (561) is provided in the middle of the outer wall of the second clamping wheel (56), and sliding grooves (510) are provided on the two inner side walls of the second bracket (54). A slider (57) is installed inside the sliding groove (510) so as to slide up and down. The end of the second clamping wheel (56) is rotatably installed on the slider (57), and a first spring (59) is connected between the bottom of the slider (57) and the inner bottom of the sliding groove (510).

9. The disposable fully endoscopic fiber ring suture device according to claim 8, characterized in that: A shaped fixing frame (58) is connected between the two sliding blocks (57); a threaded column (511) is threadedly mounted on the second bracket (54); and a pressing plate (512) for pressing the fixing frame (58) downward is rotatably connected to the bottom of the threaded column (511).

10. The disposable fully endoscopic fiber ring suture device according to claim 1, characterized in that: The incoming line limiting mechanism (7) comprises a base (71) fixed inside the housing (1), a limiting block (73) located above the base (71), two side surfaces of the limiting block (73) being arranged as inclined surfaces, a third spring (74) being connected between the base (71) and the limiting block (73), a slot (72) being provided on the base (71), a plug post (75) being connected to the bottom of the limiting block (73), and the plug post (75) being slidably inserted into the slot (72).

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