An operating handle for a suture head used in patent foramen ovale surgery

Abstract

This invention provides an operating handle for a suture head used in patent foramen ovale (PFO) surgery, belonging to the field of PFO suturing technology. Currently, manual operation is not convenient enough. The invention includes a housing and a control mechanism. The front end of the housing has a connector for connecting an outer tube, and the housing has an internal mounting cavity. The control mechanism includes a wrench lever, a drive gear set, a shifting mechanism, a first rack connected to a first push rod, and a second rack connected to a drive rod. The first end of the wrench lever is connected to the drive gear set, and the second end extends out of the housing for a user to squeeze, thereby driving the drive gear set. The shifting mechanism allows a user to switch the connection between the first rack and the drive gear set to the second rack and vice versa. A control knob for moving the second push rod is located on one side of the front of the housing. This invention has the advantages of convenient operation.

Description

Technical Field

[0001] This invention belongs to the field of patent foramen ovale suturing technology, and specifically relates to an operating handle for a suture head used in patent foramen ovale surgery. Background Technology

[0002] The foramen ovale (PFO) typically closes within the first year of life. If it remains open in children older than three years, it is called patent foramen ovale (PFO). In adults, 20%–25% of PFOs are incompletely closed. PFO is currently the most common congenital heart defect in adults. Recent studies have shown a close link between PFO and unexplained stroke. Treating the underlying cause and closing open PFOs in high-risk individuals may reduce the incidence of these conditions. Furthermore, PFO has been associated with decompression sickness and migraines; closing the foramen ovale may be beneficial for these patients.

[0003] The applicant has developed a suture head for suturing patent foramen ovale, which replaces the traditional closure surgery. However, the operation requires the use of tools to pull the suture from the outside. To facilitate the operation, the applicant designed this convenient and practical operating handle. Summary of the Invention

[0004] The purpose of this invention is to address the aforementioned problems in the prior art by providing an operating handle for a suture head used in patent foramen ovale surgery.

[0005] The objective of this invention can be achieved through the following technical solution: An operating handle for a suture head used in patent foramen ovale surgery, characterized in that it comprises a suture head and a handle body. The suture head includes an outer tube, a swing rod, and two needle tubes. A mounting bracket is provided at the first end of the outer tube. The swing rod is rotatably mounted on the mounting bracket. A driving rod is provided inside the outer tube. The driving rod is used to allow a person to pull the swing rod away from the end, thereby rotating the swing rod. Two through-channels are symmetrically opened at both ends of the swing rod. A suture buckle is provided in each of the two through-channels. The two suture buckles are connected by a connecting line, and a pull wire is connected to the middle of the connecting line. The two needle tubes are symmetrically arranged on both sides inside the outer tube. A push rod is provided in the lumen of each of the two needle tubes. The device is equipped with an insertion tip. The ends of the two needle tubes furthest from the insertion tip are connected to first push rods for pushing the two needle tubes into two insertion channels respectively. The two push rods are connected to second push rods for driving the two push rods to extend out of the two needle tubes respectively. After the needle tubes pass through the insertion channels, the suture knot is located within the needle tube lumen. The handle body includes a housing and a control mechanism. The front end of the housing has a mating interface for connecting to an outer tube. An installation cavity is provided inside the housing. The control mechanism includes a wrench lever, a drive gear set, a shifting component, a first rack connected to the first push rod, and a second rack connected to the drive rod. The first end of the wrench lever is connected to the drive gear set, and the second end of the wrench lever extends out of the housing for a person to squeeze. The drive gear set is operated by a lever, which allows the user to switch the connection between the first rack and the drive gear set to the second rack and the drive gear set, and vice versa. A control knob for moving the second push rod is located on the front side of the housing. The drive gear set includes a driving gear, a first driven gear, and a second driven gear that are sequentially meshed. The driving gear has a central hole with multiple ratchet teeth on its sidewall. A connecting block is located inside the hole, and multiple pawls for engaging with the ratchet teeth are located on the outer periphery of the connecting block. The first end of the wrench lever is fixedly connected to the connecting block via a connecting shaft. A reset rod is rotatably connected to the middle of the wrench lever. Insert shafts are provided on both sides of the end of the reset rod furthest from the wrench lever. Sliding grooves are provided on both side walls of the lower part of the mounting cavity. Two insert shafts are located within the two sliding grooves, and each insert shaft is connected to a reset spring. The lower ends of the two reset springs are mounted on the side walls of the mounting cavity. A first adapter block is provided at the rear end of the first rack, and a first sleeve ring is provided on the first adapter block. The first sleeve ring is sleeved around the first push rod and fixed to it. A second adapter block is provided at the front end of the second rack, and a second sleeve ring is provided on the second adapter block. The second sleeve ring is sleeved around the end of the drive rod furthest from the swing arm and fixed to it.

[0006] The working principle of this invention is as follows: During surgery, the external tube is inserted through the catheter sheath and advanced through the patient's groin to the atrium. The pendulum and the external tube are aligned in a straight line. Angiography is then used to locate the foramen ovale. The operator first engages the drive gear set by squeezing a wrench, which pulls back the drive rod and rotates the pendulum, aligning its two ends with the diaphragms on either side of the foramen ovale. The operator then operates the wrench to drive the drive gear set, pushing the first push rod towards the diaphragm. Two needles then extend from the external tube, pass through the insertion channel, and pierce the diaphragms on either side of the foramen ovale. Finally, the shift mechanism is activated to switch the first rack connected to the drive gear set to... The second rack, when rotated, drives the second pusher to move towards the swing arm, thus pushing the two pushers until they push the two suture knots out of the two needle tubes respectively. Then, holding the handle body, pull it outward to separate the needle tube and pusher from the two suture knots and retract them. In this way, the two suture knots are left on the other side of the septum. Pulling the suture can bring the two suture knots together and bring the septum on both sides of the foramen ovale closed. The connection between the connecting line and the suture is pre-knotted. After pulling the two suture knots together, the knot can be completed. Finally, the suture can be cut with a suture cutter. This achieves minimally invasive suturing of patent foramen ovale, and the design of the handle body facilitates the surgical operation.

[0007] In the aforementioned operating handle for a suture head used in patent foramen ovale surgery, the mounting frame includes two mounting plates. Each mounting plate has a rotating shaft at its end furthest from the outer tube. The middle of the swing arm has docking holes on both sides for connecting the rotating shafts; the docking holes correspond one-to-one with the rotating shafts. Limiting rods are provided on both side walls of the swing arm, and limiters are provided on both rotating shafts. Each of the two limiters has an annular groove on its side facing the swing arm for inserting the limiting rod. Protrusions are provided on both side walls of the annular groove to form a limiting opening. The drive rod is close to the swing arm. One end of the rod is provided with a rotating block. A rotating groove for accommodating the rotating block is provided near the through hole on the swing rod. A receiving channel is opened at the end of the drive rod away from the rotating block. A track block is provided in the receiving channel near the rotating block. The track block has two through-holes, each for accommodating two needle tubes. Both sides of the drive rod have needle outlet openings communicating with the receiving channels. Both sides of the track block have needle outlet holes, and both sides of the track block are respectively engaged with the two needle outlet holes. The two needle outlet holes are respectively connected to the two through-holes. The outer tube is connected to the central tube. Exposed grooves are formed on both side walls of the outer tube, allowing two needle outlets to be exposed. Both needle tubes and two push rods are made of shape memory alloy. A guide arc surface is provided on the side of each needle outlet near the swing arm. The first push rod is located within the receiving channel and fixed to the end of the needle tube away from the insertion tip. An installation channel for accommodating the second push rod is provided through the first push rod. Two push posts are provided on the end of the second push rod near the needle tube, and the two push posts are fixedly connected to the two push rods respectively. A central groove is formed on one side of the swing arm. The cable outlet groove has two ends connected to two through channels respectively. The other side of the swing rod has a through hole that connects to the cable outlet groove. The through hole is used for the pull cable to pass through. The second push rod and the track block are both provided with a pull channel for the pull cable to pass through. Two docking blocks are provided on the side walls of the two through channels. Two docking grooves are provided on the outer side walls of the two sewing buckles. A clearance groove communicating with the lumen of the needle tube is provided on the side walls of the two needle tubes. A gap is left between the outer side wall of the sewing buckle and the side wall of the through channel for the tube wall of the needle tube to pass through.

[0008] In the aforementioned operating handle for a suture head used in patent foramen ovale surgery, the rear end of the outer shell has a pull hole that connects to the mounting cavity. The pull hole is used for threading a suture. The outer shell includes a main body and a handle. One side of the handle has a movable opening that connects to the mounting cavity. The second end of the wrench lever extends out from the movable opening.

[0009] In the aforementioned operating handle for a suture head used in patent foramen ovale surgery, the first and second racks are located on the upper sides of the drive gear set, respectively. Both sides of the housing have shift holes communicating with the mounting cavity. The shifting component includes a lever and a shift gear located in the middle of the lever. The lower part of the shift gear meshes with the drive gear set, and the upper part meshes with either the first or second rack. The shift gear and the lever are connected by ball bearings. Both ends of the lever extend from the two shift holes. Fixed springs are provided on both side walls of the mounting cavity. A fixed ball is connected to the end of each fixed spring near the lever. Fixed grooves are provided at both ends of the lever, allowing the two fixed balls to be inserted. A lever is installed at both ends of the lever, allowing a person to press the lever to move it along its length, thereby moving the shift gear along the length of the lever.

[0010] In the aforementioned operating handle for the suture head used in patent foramen ovale surgery, the drive gear set is connected to a triangular connecting frame. The triangular connecting frame includes two triangular plates located on both sides of the drive gear set. Each of the three corners of the two triangular plates is provided with a rotating hole for the shafts of the drive gear, the first driven gear, and the second driven gear to be inserted. Both sides of the housing are provided with switching handles, and the triangular plates and switching handles correspond one-to-one. The triangular plates and switching handles are connected by connecting posts. Both sides of the triangular connecting frame are provided with adjusting plates, and both adjusting plates are provided with arc-shaped second sliding grooves and arc-shaped first sliding grooves. The second sliding grooves correspond one-to-one with the connecting posts. The two ends of the shaft of the second driven gear are located in the two first sliding grooves and can move along the length of the first sliding grooves.

[0011] In the aforementioned operating handle for the suture head used in patent foramen ovale surgery, a first guide block is provided on one side of the first adapter block, and a second guide block is provided on one side of the second adapter block. Guide grooves are provided on both sides of the mounting cavity, and the first guide block and the second guide block are respectively located in the two guide grooves.

[0012] In the aforementioned operating handle for the suture head used in patent foramen ovale surgery, a docking shaft is provided on the side of the control knob near the outer shell, and an incomplete gear is provided at the end of the docking shaft away from the control knob. A translation block is provided in the mounting cavity, and the translation block has a rectangular opening. Multiple meshing teeth for meshing with the incomplete gear are provided on the top and bottom walls of the rectangular opening. A moving strip is connected to one side of the translation block, and a sleeve is connected to the end of the moving strip away from the translation block through the docking strip. The sleeve is fitted onto the end of the second push rod away from the needle tube and fixed to the second push rod.

[0013] In the aforementioned operating handle for the suture head used in patent foramen ovale surgery, guide rail grooves are provided on both sides of the mounting cavity, and guide rail blocks are provided on both sides of the translation block. The two guide rail blocks are respectively located in the two guide rail grooves. A guide rail tube is inserted into the pull hole of the outer shell. An extension strip is provided at the front end of the guide rail tube. A guide groove is opened along the length direction of the extension strip. The sleeve is located in the guide groove and can move along the length direction of the guide groove. The guide groove is connected to the lumen of the guide rail tube.

[0014] In the aforementioned operating handle for the suture head used in patent foramen ovale surgery, the first collar, the second collar, and the collar are all provided with end seals.

[0015] Compared with existing technologies, the present invention has the advantage of being easy to operate. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of the present invention.

[0017] Figure 2 This is a cross-sectional structural diagram of the handle in this invention.

[0018] Figure 3 This is a schematic diagram of the internal structure of the handle body in this invention.

[0019] Figure 4 This is a schematic diagram of the internal structure of the handle body after one of the adjustment plates is hidden in this invention.

[0020] Figure 5 This is a schematic diagram of the internal structure of the handle body in this invention.

[0021] Figure 6 This is a schematic diagram of the internal structure of the handle body in this invention.

[0022] Figure 7 This is a cross-sectional structural diagram of the outer shell in this invention.

[0023] Figure 8 This is a schematic diagram of the structure of the present invention.

[0024] Figure 9 This is a schematic diagram of the pendulum in its unfolded state in this invention.

[0025] Figure 10 This is a schematic diagram of the structure of the present invention.

[0026] Figure 11 This is a schematic diagram of the hidden outer tube structure in this invention.

[0027] Figure 12 This is a schematic diagram of the structure of the hidden outer tube and drive rod in this invention.

[0028] Figure 13 This is a schematic diagram of the structure of the concealed outer tube, drive rod, first push rod, and one of the limiters in this invention.

[0029] Figure 14 This is an enlarged structural diagram of part A in this invention.

[0030] Figure 15 This is a schematic diagram of the pendulum in its unfolded state in this invention.

[0031] Figure 16 This is a schematic diagram of the limiter in this invention.

[0032] Figure 17 This is a schematic diagram of the state when the present invention is in preparation at the oval aperture.

[0033] In the diagram, A1 is the sewing head; A2 is the handle body; A3 is the outer shell; A4 is the control mechanism; A5 is the mating hole; A6 is the mounting cavity; A7 is the wrench lever; A8 is the drive gear set; A9 is the shifting component; A10 is the first rack; A11 is the second rack; A12 is the control knob; A13 is the pull hole; A14 is the main body; A15 is the grip; A16 is the movable opening; A17 is the driving gear; A18 is the first driven gear; A19 is the second driven gear; A20 is the round hole; A21 is the ratchet; A22 is the connecting block; A23 is the pawl; A24 is the connecting shaft; 25. Reset rod; A26. Insert shaft; A27. Sliding groove; A28. Reset tension spring; A29. Shift hole; A30. Shift gear; A31. Fixed gear spring; A32. Fixed gear ball; A33. Fixed gear groove; A34. Paddle shifter; A35. Triangular connecting bracket; A36. Triangular plate; A37. Rotating hole; A38. Shift handle; A39. Adjusting plate; A40. First sliding groove; A41. Second sliding groove; A42. Connecting post; A43. First adapter block; A44. First connecting ring; A45. Second adapter block; A46. Second connecting ring; A47. First guide block; A48, Second guide block; A49, Guide groove; A50, Connecting shaft; A51, Incomplete gear; A52, Translation block; A53, Rectangular opening; A54, Meshing teeth; A55, Moving bar; A56, Sleeve; A57, Guide rail groove; A58, Guide rail block; A59, Guide rail tube; A60, Extension bar; A61, Guide groove; A62, End seal; A63, Lever; A64, Connecting bar; 1, Outer tube; 2, Swing rod; 3, Needle tube; 4, Mounting bracket; 5, Drive rod; 6, Through-hole channel; 7, Seam button; 8, Connecting wire; 9, Push 10. Insertion tip; 11. First push rod; 12. Second push rod; 13. Mounting plate; 14. Rotating shaft; 15. Docking hole; 16. Limiting rod; 17. Annular groove; 18. Limiting opening; 19. Rotating block; 20. Rotating groove; 22. Track block; 23. Movable channel; 24. Needle outlet opening; 25. Exposed groove; 26. Guide arc surface; 27. Push column; 28. Mounting channel; 29. ​​Wire outlet groove; 30. Through hole; 31. Wire pulling channel; 32. Docking block; 33. Docking groove; 34. Relief groove; 35. Limiter; 36. Needle outlet hole; 37. Pull wire. Detailed Implementation

[0034] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0035] like Figures 1-17As shown, the operating handle of the suture head for patent foramen ovale surgery includes a suture head A1 and a handle body A2. The suture head A1 includes an outer tube 1, a swing rod 2, and two needle tubes 3. A mounting bracket 4 is provided at the first end of the outer tube 1. The swing rod 2 is rotatably mounted on the mounting bracket 4. A drive rod 5 is provided inside the outer tube 1. The drive rod 5 is used to pull the swing rod 2 away from the end of the swing rod 2, thereby rotating the swing rod 2. Two through channels 6 are symmetrically opened at both ends of the swing rod 2. A suture buckle 7 is provided in each of the two through channels 6. The two suture buckles 7 are connected by a connecting line 8. A pull line 37 is connected to the middle of the connecting line 8. The two needle tubes 3 are symmetrically arranged on both sides inside the outer tube 1. A push rod 9 is provided in the lumen of each of the two needle tubes 3. Each of the two needle tubes 3 is provided with an insertion tip 10. The end of each of the two needle tubes 3 away from the insertion tip 10 is connected to a first push rod 11 for pushing the two needle tubes 3 into the two through channels 6 respectively. The two push rods 9 are connected to a second push rod for driving the two push rods 9 to extend out of the two needle tubes 3 respectively. 12. After the needle tube 3 passes through the insertion channel 6, the suture buckle 7 is located inside the lumen of the needle tube 3. The handle body A2 includes a housing A3 and a control mechanism A4. The front end of the housing A3 is provided with a mating interface A5 for connecting to the outer tube 1. The housing A3 has an installation cavity A6 inside. The control mechanism A4 includes a wrench lever A7, a drive gear set A8, a shifting component A9, a first rack A10 connected to the first push rod 11, and a second rack A11 connected to the drive rod 5. The first end of the wrench lever A7 is connected to the drive rod 5. The gear set A8 is connected, and the second end of the wrench lever A7 extends out of the housing A3 for a person to squeeze, thereby driving the drive gear set A8 to work. The shifting piece is used for a person to turn, thereby switching the connection between the first rack A10 and the drive gear set A8 to the connection between the second rack A11 and the drive gear set A8, and switching the connection between the second rack A11 and the drive gear set A8 to the connection between the first rack A10 and the drive gear set A8. A control knob A12 for driving the movement of the second push rod 12 is provided on one side of the front of the housing A3.

[0036] In further detail, the mounting bracket 4 includes two mounting plates 13. Each mounting plate 13 has a rotating shaft 14 at its end furthest from the outer tube 1. The middle of the swing arm 2 has docking holes 15 on both sides for connecting the rotating shafts 14, with each docking hole 15 corresponding to a rotating shaft 14. Limiting rods 16 are provided on both side walls of the swing arm 2. Limiters 35 are provided on both rotating shafts 14. Each limiter 35 has an annular groove 17 on its side facing the swing arm 2 for inserting the limiting rod 16. Protrusions are provided on both side walls of the annular groove 17 to form limiting openings 18. A rotating block 19 is provided at the end of the drive rod 5 near the swing arm 2. A... A rotating groove 20 is provided to accommodate the rotating block 19. A receiving channel is provided on the drive rod 5 from the end furthest from the rotating block 19. A track block 22 is positioned near the rotating block 19 within the receiving channel. Two movable channels 23 are provided through the track block 22, each used to accommodate two needle tubes 3. Needle outlet openings 24 communicating with the receiving channels are provided on both sides of the drive rod 5. Needle outlet holes 36 are provided on both sides of the track block 22, and both sides of the track block 22 are respectively engaged within the two needle outlet openings 24. The two needle outlet holes 36 communicate with the two movable channels 23. Exposed grooves 25 are provided on both side walls of the outer tube 1, each used to supply two needle tubes 3. One needle outlet 36 is exposed. The two needle tubes 3 and the two push rods 9 are all made of shape memory alloy. The two needle outlets 36 are provided with guide arc surfaces 26 on the side near the swing rod 2. The first push rod 11 is located in the receiving channel and is fixed to the end of the needle tube 3 away from the insertion tip 10. The first push rod 11 is provided with a mounting channel 28 for receiving the second push rod 12. The end of the second push rod 12 near the needle tube 3 is provided with two push posts 27. The two push posts 27 are fixedly connected to the two push rods 9 respectively. A wire outlet groove 29 is opened on one side of the swing rod 2. The two ends of the wire outlet groove 29 are respectively connected to the two through channels 6. A through hole 3 is opened on the other side of the swing rod 2 to connect to the wire outlet groove 29. 0. The perforation 30 is used for the pull wire 37 to pass through. The second push rod 12 and the track block 22 are both provided with a pull channel 31 for the pull wire 37 to pass through. Two docking blocks 32 are provided on the side walls of the two passage channels 6. Two docking grooves 33 are opened on the outer side walls of the two sewing buckles 7. The side walls of the two needle tubes 3 are provided with a clearance groove 34 that communicates with the lumen of the needle tube 3. A gap is left between the outer side wall of the sewing buckle 7 and the side wall of the passage channel 6 for the tube wall of the needle tube 3 to pass through. When the needle tube 3 passes through the passage channel 6, the sewing buckle 7 will be located in the lumen of the needle tube 3 and will not be pushed out by the needle tube 3, so as not to affect the subsequent passage of the needle tube 3 through the diaphragm.

[0037] When the pendulum 2 reaches the oval aperture A20, the pendulum 2 is first rotated and unfolded by the drive rod 5. After unfolding, the outer tube 1 is operated to make fine adjustments so that the two ends of the pendulum 2 can be attached to the diaphragms on both sides of the oval aperture A20. During this process, the pendulum 2 will rotate due to the fine adjustment. Therefore, a limiting port 18 is designed. The limiting rod 16 moves in the annular groove 17 as the pendulum 2 rotates. When it moves to the limiting port 18, it can no longer move. This forms a limit on the rotation angle of the pendulum 2. This angle is when the pendulum 2 is perpendicular to the outer tube 1. This design limits the rotation of the pendulum 2 and facilitates the fine adjustment operation.

[0038] During the process of the outer tube 1 entering the human body, the rotating block 19 is located in the rotating groove 20 to keep the swing rod 2 and the outer tube 1 on the same straight line, ensuring that it can enter the human body smoothly. As shown in the attached figure, both the rotating block 19 and the rotating groove 20 are arc-shaped. When it is necessary to rotate to unfold the swing rod 2, the staff pulls the drive rod 5, and the rotating block 19 will gradually leave the rotating groove 20. Due to the arc-shaped surfaces of the rotating block 19 and the rotating groove 20, the swing rod 2 will rotate during the process of the rotating block 19 leaving, eventually making the swing rod 2 perpendicular to the outer tube 1. When the drive rod 5 is pulled back to unfold the swing rod 2, the drive rod 5 will remain contracted to ensure that it does not interfere with the swing rod 2. The function of the exposed groove 25 is to ensure that the needle hole 36 can be exposed and not blocked by the outer tube 1. Even if the drive rod 5 contracts, the needle hole 36 can still be exposed, so that the needle tube 3 can be extended normally.

[0039] The shape memory alloy is made of nickel-titanium alloy. Both needle tubes 3 are bent outwards, and both insertion channels 6 are tilted to form an inverted "V" shape. When the needle is withdrawn, the first push rod 11 is pushed, and the needle tube 3 smoothly extends out of the needle hole 36 under the action of the guide arc surface 26 and its own restoration deformation. The original shape of the two needle tubes 3 can ensure that they are accurately inserted into the insertion channel 6. After passing through the insertion channel 6, the two needle tubes 3 are inserted into the diaphragms on both sides of the oval hole A20 and finally pass out from the diaphragm, thus opening up the two channels. Then, the second push rod 12 is pushed so that the two push rods 9 push the two suture buckles 7 out to the other side of the diaphragm along the needle tube 3. Finally, the needle tube 3 and push rod 9 are retracted.

[0040] Before the operation, the suture 37 is passed through the threading channel of the second push rod 12 and the track block 22 and then through the hole 30 to connect the suture 37 with the connecting line 8. During suturing, the suture 37 is pulled from the outside and then cut. The connecting block 32 and the connecting groove 33 correspond one-to-one. When installing the suture buckle 7, the two connecting grooves 33 on the suture buckle 7 are aligned with the connecting block 32 and inserted. The operation is simple. Moreover, the direction of the connecting groove 33 is the same as the direction of the threading channel 6, which can fix the suture buckle 7 without interfering with the push rod 9 pushing out the suture buckle 7.

[0041] Because of the docking block 32, a clearance groove 34 is designed. The position of the clearance groove 34 corresponds to the docking block 32 to ensure that the tube wall of the needle tube 3 will not interfere with the docking block 32, so that the needle tube 3 can pass smoothly through the insertion channel 6.

[0042] To elaborate further, the rear end of the outer casing A3 has a pull hole A13 that connects to the mounting cavity A6. The pull hole A13 is used for the pull wire 37 to pass through. The outer casing A3 includes a main body A14 and a handle A15. One side of the handle A15 has a movable opening A16 that connects to the mounting cavity A6. The second end of the wrench lever A7 extends out from the movable opening A16.

[0043] This configuration allows the pull wire 37 to pass sequentially through the track block 22, the second push rod 12, and the pull wire channel 31, finally exiting through the pull hole A13, facilitating the operation of the pull wire 37 by the staff.

[0044] To elaborate further, the drive gear set A8 includes a driving gear A17, a first driven gear A18, and a second driven gear A19 that are sequentially meshed. The driving gear A17 has a central hole A20, and multiple ratchet teeth A21 are provided on the side wall of the hole A20. A connecting block A22 is provided inside the hole A20, and multiple pawls A23 for meshing with the ratchet teeth A21 are provided on the outer peripheral wall of the connecting block A22. The first end of the wrench lever A7 is fixedly connected to the connecting block A22 via a connecting shaft A24. A reset rod A25 is rotatably connected to the middle of the wrench lever A7. Insert shafts A26 are provided on both sides of the end of the reset rod A25 furthest from the wrench lever A7. Sliding grooves A27 are provided on both side walls of the lower part of the mounting cavity A6. The two insert shafts A26 are located within the two sliding grooves A27, and each insert shaft A26 is connected to a reset spring A28. The lower ends of the two reset springs A28 are mounted on the side walls of the mounting cavity A6. The first rack A10 and the second rack A11 are located above the drive gear set A8. On both sides of the outer casing A3, shift holes A29 communicating with the mounting cavity A6 are provided. The shift component A9 includes a lever A63 and a shift gear A30 disposed in the middle of the lever A63. The lower part of the shift gear A30 is used to mesh with the drive gear set A8, and the upper part of the shift gear A30 is used to mesh with the first rack A10 or the second rack A11. The shift gear A30 and the lever A63 are connected by ball bearings. The two ends of the lever A63 extend from the two shift holes A29 respectively. Both sides of cavity A6 are provided with a fixed spring A31. The fixed spring A31 is connected to a fixed ball A32 at the end near the lever A63. Both ends of lever A63 are provided with a fixed groove A33. The two fixed grooves A33 are used to engage the two fixed balls A32 respectively. Both ends of lever A63 are provided with a lever A34. The lever A34 is used for pressing to make lever A63 move along its own length direction, thereby driving shift gear A30 to move along the length direction of lever A63.

[0045] As shown in the attached diagram, the pawl A23 on the connecting block A22 is set counterclockwise. When the wrench lever A7 is squeezed, the wrench lever A7 transmits power to the driving gear A17 through the connecting block A22 with the pawl A23. The driving gear A17 rotates counterclockwise, thereby driving the two driven gears to rotate. When the first rack A10 is working, the lower right side of the shift gear A30 meshes with the second driven gear A19, and the upper left side of the shift gear A30 meshes with the first rack A10. When the second rack A11 is working, the hand presses the lever A34 to push the lever A63, causing the lever A63 to move in the direction of the second rack A11. This causes the shift gear A30 to disengage from the first rack A10 and mesh with the second rack A11. At this time, the lower left side of the shift gear A30 meshes with the second driven gear A19, and the upper right side of the shift gear A30 meshes with the second rack A11, thus completing the shift.

[0046] To elaborate further, the drive gear set A8 is connected to a triangular connecting frame A35. The triangular connecting frame A35 includes two triangular plates A36 located on both sides of the drive gear set A8. Each of the three corners of the two triangular plates is provided with a rotating hole A37. The three rotating holes A37 are used for the shafts 14 of the drive gear A17, the first driven gear A18, and the second driven gear A19 to be inserted respectively. Both sides of the outer casing A3 are provided with switching handles A38. The triangular plates A36 and the switching handles A38 correspond one-to-one. The triangular plates A36 and the switching handles A38 are connected by a connecting post A42. Both sides of the triangular connecting frame A35 are provided with adjusting plates A39. Each of the two adjusting plates A39 has an arc-shaped second sliding groove A41 and an arc-shaped first sliding groove A40. The second sliding groove A41 and the connecting post A42 correspond one-to-one. The two ends of the axle of the second driven gear A19 are located in the two first sliding grooves A40 respectively and can move along the length of the first sliding grooves A40.

[0047] For clarity, the axles of the three gears in the drive gear set A8 are hidden in the attached diagram. In addition to shifting gears, since components such as the needle tube 3 need to move forward and backward, the drive gear set A8 is designed as a three-star wheel fork type. For example, when the first rack A10 is currently moving, the second driven gear A19 meshes with the first rack A10, and the driving gear A17 rotates counterclockwise, the first rack A10 will move backward. When the first rack A10 needs to move forward, the shift handle A38 is turned downward, so the second driven gear A19 will disengage from the first rack A10, and the first driven gear A18 will take its place. In this way, the second driven gear A19 will not participate in the work, and the first driven gear A18 will mesh with the first rack A10, so the first rack A10 can move forward. The same applies to the second rack A11.

[0048] To elaborate further, a first adapter block A43 is provided at the rear end of the first rack A10, and a first sleeve ring A44 is provided on the first adapter block A43. The first sleeve ring A44 is sleeved on the outside of the first push rod 11 and fixed to the first push rod 11. A second adapter block A45 is provided at the front end of the second rack A11, and a second sleeve ring A46 is provided on the second adapter block A45. The second sleeve ring A46 is sleeved on the end of the drive rod 5 away from the swing arm and fixed to the drive rod 5.

[0049] The drive rod 5 and the first push rod 11 are on the same straight line, and the drive rod 5 is sleeved outside the first push rod 11. The drive rod 5 is fixed by sleeve connection. The second sleeve ring A46 will not interfere with the first push rod 11. Therefore, when the first rack A10 moves and drives the drive rod 5 to move, it will not drive the first push rod 11. Similarly, when the first push rod 11 moves, it will not interfere with the drive rod 5.

[0050] To elaborate further, a first guide block A47 is provided on one side of the first adapter block A43, a second guide block A48 is provided on one side of the second adapter block A45, and guide grooves A49 are provided on both side walls of the mounting cavity A6. The first guide block A47 and the second guide block A48 are respectively located in the two guide grooves A49.

[0051] This setting is used to limit the movement path of the first transition block A43 and the second transition block A45 to ensure normal operation.

[0052] To elaborate further, a docking shaft A50 is provided on the side of the control knob A12 near the outer casing A3. An incomplete gear A51 is provided on the end of the docking shaft A50 away from the control knob A12. A translation block A52 is provided in the mounting cavity A6. The translation block A52 has a rectangular opening A53. Multiple meshing teeth A54 for meshing with the incomplete gear A51 are provided on the top and bottom walls of the rectangular opening A53. A moving strip A55 is connected to one side of the translation block A52. The end of the moving strip A55 away from the translation block A52 is connected to a sleeve A56 through a docking strip A64. The sleeve A56 is fitted on the end of the second push rod 12 away from the needle tube 3 and fixed to the second push rod 12.

[0053] The control knob A12 is used to control the extension and retraction of the push rod 9. During operation, rotating the control knob A12 causes the incomplete gear A51 to work, driving the translation block A52 to move. The translation block A52 then drives the moving bar A55 to move, and finally drives the second push rod 12 to move through the sleeve A56. This arrangement ensures that there is no interference between the first adapter block A43 and the second adapter block A45, and the spatial layout is reasonable.

[0054] To elaborate further, guide rail grooves A57 are provided on both side walls of the mounting cavity A6, and guide rail blocks A58 are provided on both sides of the translation block A52. The two guide rail blocks A58 are located in the two guide rail grooves A57 respectively. The outer shell A3 has a guide rail tube A59 inserted into the pull hole A13. An extension bar A60 is provided at the front end of the guide rail tube A59. The extension bar A60 has a guide groove A61 along its own length. The sleeve A56 is located inside the guide groove A61 and can move along the length of the guide groove A61. The guide groove A61 is connected to the cavity of the guide rail tube A59.

[0055] After the pull wire 37 comes out of the second push rod 12, it continues along the guide tube A59 and extends to the outside for operation. The guide groove A61 plays a limiting role and maintains the movement trajectory of the second push rod 12.

[0056] To elaborate further, the first connecting ring A44, the second connecting ring A46, and the collar are all equipped with end seals A62;

[0057] The sealing element is a rubber sealing ring, which ensures a seal without hindering the movement of the first push rod 11, the second push rod 12 and the drive rod 5.

[0058] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

[0059] Although this document uses a large number of technical terms, the possibility of using other terms is not excluded. These terms are used merely for the convenience of describing and explaining the essence of the invention; interpreting them as any additional limitation would be contrary to the spirit of the invention.

Claims

1. An operating handle for a suture head used in surgery for patent foramen ovale, characterized in that, The device includes a suture head (A1) and a handle body (A2). The suture head (A1) includes an outer tube (1), a swing rod (2), and two needle tubes (3). A mounting bracket (4) is provided at the first end of the outer tube (1). The swing rod (2) is rotatably mounted on the mounting bracket (4). A drive rod (5) is provided inside the outer tube (1). The drive rod (5) is used to allow a person to pull the swing rod (2) away from the end, thereby rotating the swing rod (2). Two through-channels (6) are symmetrically opened at both ends of the swing rod (2). A suture buckle (7) is provided in each of the two through-channels (6). The two suture buckles (7) are connected by a connecting line (8). A pull line (37) is connected to the middle of the connecting line (8). The two needle tubes (3) are symmetrically arranged inside the outer tube (1). On both sides of the part, push rods (9) are provided in the lumens of the two needle tubes (3), and each of the two needle tubes (3) is provided with an insertion tip (10). The ends of the two needle tubes (3) away from the insertion tips (10) are connected to a first push rod (11) for pushing the two needle tubes (3) into the two insertion channels (6) respectively. The two push rods (9) are connected to a second push rod (12) for driving the two push rods (9) to extend out of the two needle tubes (3) respectively. After the needle tube (3) passes through the insertion channel (6), the suture buckle (7) is located in the lumen of the needle tube (3). The handle body (A2) includes a shell (A3) and a control mechanism (A4). The front end of the shell (A3) is provided with a docking interface for connecting the outer tube (1). The housing (A3) has an internal mounting cavity (A6). The control mechanism (A4) includes a wrench lever (A7), a drive gear set (A8), a shifting element (A9), a first rack (A10) connected to the first push rod (11), and a second rack (A11) connected to the drive rod (5). The first end of the wrench lever (A7) is connected to the drive gear set (A8), and the second end of the wrench lever (A7) extends out of the housing (A3) for a person to squeeze, thereby driving the drive gear set (A8) to work. The shifting element (A9) is used for a person to turn, thereby switching the connection between the first rack (A10) and the drive gear set (A8) to the connection between the second rack (A11) and the drive gear set (A8), and connecting the second rack (A11) and the drive rod (5). The gear set (A8) is switched to connect with the first rack (A10) and the drive gear set (A8). A control knob (A12) for driving the second push rod (12) is provided on the front side of the housing (A3). The drive gear set (A8) includes a driving gear (A17), a first driven gear (A18), and a second driven gear (A19) that are meshed together in sequence. The driving gear (A17) has a circular hole (A20) at its center. Multiple ratchet teeth (A21) are provided on the side wall of the circular hole (A20). A connecting block (A22) is provided inside the circular hole (A20). Multiple pawls (A23) for meshing with the ratchet teeth (A21) are provided on the outer peripheral wall of the connecting block (A22).The first end of the wrench lever (A7) is fixedly connected to the connecting block (A22) via a connecting shaft (A24). A reset lever (A25) is rotatably connected to the middle of the wrench lever (A7). Insert shafts (A26) are provided on both sides of the end of the reset lever (A25) away from the wrench lever (A7). Sliding grooves (A27) are provided on both side walls of the lower part of the mounting cavity (A6). The two insert shafts (A26) are respectively located in the two sliding grooves (A27). Each insert shaft (A26) is connected to a reset spring (A28). The lower ends of the two reset springs (A28) are installed on the... On the side wall of the mounting cavity (A6), a first adapter block (A43) is provided at the rear end of the first rack (A10), and a first sleeve ring (A44) is provided on the first adapter block (A43). The first sleeve ring (A44) is sleeved on the first push rod (11) and fixed to the first push rod (11). A second adapter block (A45) is provided at the front end of the second rack (A11), and a second sleeve ring (A46) is provided on the second adapter block (A45). The second sleeve ring (A46) is sleeved on the end of the drive rod (5) away from the swing rod (2) and fixed to the drive rod (5).

2. The operating handle for a suture head used in patent foramen ovale surgery according to claim 1, characterized in that, The mounting bracket (4) includes two mounting plates (13). Each mounting plate (13) has a rotating shaft (14) at its end away from the outer tube (1). The middle of the swing rod (2) has two mating holes (15) (A5) on both sides for mating with the rotating shaft (14). The mating holes (15) (A5) and the rotating shaft (14) correspond one-to-one. Limiting rods (16) are provided on both sides of the swing rod (2). Limiters (35) are provided on both rotating shafts (14). Each of the two limiters (35) has an annular groove (17) on the side facing the swing rod (2) for inserting the limiting rod (16). Protrusions are provided on both sides of the annular groove (17) to form a limiting opening (18). The drive rod ( 5) A rotating block (19) is provided near one end of the swing rod (2). A wire outlet groove (29) is provided on one side of the swing rod (2). The two ends of the wire outlet groove (29) are respectively connected to two through channels (6). A through hole (30) is provided on the other side of the swing rod (2) to connect to the wire outlet groove (29). The through hole (30) is used for the pull wire (37) to pass through. The second push rod (12) and the track block (22) are both provided with a pull channel (31) for the pull wire (37) to pass through. A rotating groove (20) for accommodating the rotating block (19) is provided near the through hole (30) of the swing rod (2). A receiving channel is provided from the end away from the rotating block (19) of the drive rod (5). The receiving channel is located near the end of the drive rod (5). The rotating block (19) is provided with a track block (22), which has two through channels (23). The two through channels (23) are used to accommodate the two needle tubes (3). The drive rod (5) has needle outlet openings (24) on both sides that communicate with the accommodating channels. The track block (22) has needle outlet holes (36) on both sides and the two sides of the track block (22) are respectively engaged in the two needle outlet openings (24). The two needle outlet holes (36) are respectively connected to the two through channels (23). The outer tube (1) has exposure grooves (25) on both sides of its sidewalls. The two exposure grooves (25) are used to expose the two needle outlet holes (36). The two needle tubes (3) and the two Each of the push rods (9) is made of shape memory alloy. The two needle holes (36) are provided with guide arc surfaces (26) on the side near the swing rod (2). The first push rod (11) is located in the receiving channel and fixed to the end of the needle tube (3) away from the insertion tip (10). The first push rod (11) is provided with an installation channel (28) for receiving the second push rod (12). The end of the second push rod (12) near the needle tube (3) is provided with two push posts (27). The two push posts (27) are fixedly connected to the two push rods (9) respectively. Two docking blocks (32) are provided on the side walls of the two through channels (6). Two docking grooves (33) are opened on the outer side walls of the two sewing buckles (7).Both needle tubes (3) have relief grooves (34) on their side walls that communicate with the lumen of the needle tube (3). A gap is left between the outer wall of the suture buckle (7) and the side wall of the through-channel (6) for the needle tube (3) to pass through.

3. The operating handle for a suture head used in patent foramen ovale surgery according to claim 1, characterized in that, The rear end of the outer casing (A3) is provided with a pull hole (A13) that connects to the mounting cavity (A6). The pull hole (A13) is used for the pull wire (37) to pass through. The outer casing (A3) includes a main body (A14) and a handle (A15). One side of the handle (A15) is provided with a movable opening (A16) that connects to the mounting cavity (A6). The second end of the wrench lever (A7) extends out from the movable opening (A16).

4. The operating handle for a suture head used in patent foramen ovale surgery according to claim 1, characterized in that, The first rack (A10) and the second rack (A11) are located on the upper sides of the drive gear set (A8), respectively. Both sides of the housing (A3) have shift holes (A29) communicating with the mounting cavity (A6). The shifting component (A9) includes a lever (A63) and a shift gear (A30) disposed in the middle of the lever (A63). The lower part of the shift gear (A30) is used for meshing with the drive gear set (A8), and the upper part of the shift gear (A30) is used for meshing with either the first rack (A10) or the second rack (A11). The shift gear (A30) and the lever (A63) are connected by a ball bearing. 3) Both ends of the lever (A6) extend from two shift holes (A29). A fixed spring (A31) is provided on both sides of the mounting cavity (A6). A fixed ball (A32) is connected to the end of the fixed spring (A31) near the lever (A63). A fixed groove (A33) is provided at both ends of the lever (A63). The two fixed grooves (A33) are used to hold the two fixed balls (A32) in place. A lever (A34) is installed at both ends of the lever (A63). The lever (A34) is used to press the lever (A63) to move it along its own length direction, thereby driving the shift gear (A30) to move along the length direction of the lever (A63).

5. The operating handle for a suture head used in patent foramen ovale surgery according to claim 1, characterized in that, The drive gear set (A8) is connected to a triangular connecting frame (A35). The triangular connecting frame (A35) includes two triangular plates (A36) located on both sides of the drive gear set (A8). Rotating holes (A37) are provided at the three corners of each of the two triangular plates (A36). The three rotating holes (A37) are used to insert the shafts (14) of the driving gear (A17), the first driven gear (A18), and the second driven gear (A19). Switching handles (A38) are provided on both sides of the housing (A3). The triangular plates (A36) and the switching handles (A38) are connected... In a one-to-one correspondence, the triangular plate (A36) and the switching handle (A38) are connected by a connecting column (A42). The two sides of the triangular connecting frame (A35) are provided with adjusting plates (A39). Each of the two adjusting plates (A39) has an arc-shaped second sliding groove (A41) and an arc-shaped first sliding groove (A40). The second sliding groove (A41) and the connecting column (A42) correspond one-to-one. The two ends of the shaft (14) of the second driven gear (A19) are respectively located in the two first sliding grooves (A40) and can move along the length direction of the first sliding groove (A40).

6. The operating handle for a suture head used in patent foramen ovale surgery according to claim 5, characterized in that, A first guide block (A47) is provided on one side of the first adapter block (A43), and a second guide block (A48) is provided on one side of the second adapter block (A45). Guide grooves (A49) are provided on both side walls of the mounting cavity (A6). The first guide block (A47) and the second guide block (A48) are respectively located in the two guide grooves (A49).

7. The operating handle for a suture head used in patent foramen ovale surgery according to claim 1, characterized in that, The control knob (A12) is provided with a docking shaft (A50) on the side near the outer shell (A3). An incomplete gear (A51) is provided at the end of the docking shaft (A50) away from the control knob (A12). A translation block (A52) is provided in the mounting cavity (A6). The translation block (A52) has a rectangular opening (A53). Multiple meshing teeth (A54) for meshing with the incomplete gear (A51) are provided on the top and bottom walls of the rectangular opening (A53). A moving strip (A55) is connected to one side of the translation block (A52). A sleeve (A56) is connected to the end of the moving strip (A55) away from the translation block (A52) through the docking strip (A64). The sleeve (A56) is sleeved on the end of the second push rod (12) away from the needle tube (3) and fixed to the second push rod (12).

8. The operating handle for a suture head used in patent foramen ovale surgery according to claim 7, characterized in that, Guide rail grooves (A57) are provided on both side walls of the mounting cavity (A6), and guide rail blocks (A58) are provided on both sides of the translation block (A52). The two guide rail blocks (A58) are respectively located in the two guide rail grooves (A57). The outer shell (A3) has a guide rail tube (A59) inserted into the pull hole (A13). An extension strip (A60) is provided at the front end of the guide rail tube (A59). The extension strip (A60) has a guide groove (A61) along its own length direction. The sleeve (A56) is located in the guide groove (A61) and can move along the length direction of the guide groove (A61). The guide groove (A61) is connected to the cavity of the guide rail tube (A59).

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