Suturing device for patent foramen ovale treatment

Abstract

The invention discloses a suturing device for patent foramen ovale treatment, and belongs to the technical field of medical instruments, the suturing device comprises an inner cylinder, a puncture sliding outer cylinder, two expansion claws and a tightening sliding outer cylinder are respectively arranged on the outer side of the inner cylinder from the puncture side to the tightening side of a suture line, a sliding driving mechanism is assembled between the puncture sliding outer cylinder and the inner cylinder, and the two expansion claws are arranged on the outer side of the inner cylinder; two puncture needles are symmetrically arranged on the outer side of the puncture sliding outer cylinder; according to the device, the two movable puncture needles, the two rotary expansion claws and the two movable thread clamping cylinders are arranged, the two movable puncture needles are provided with suture lines, the two rotary expansion claws are provided with thread binding rings, and the device enables the suture lines to penetrate through a heart valve and the thread binding rings to be clamped into the two thread clamping cylinders through movement of the two puncture needles; the suture line is tensioned through the movement of the two line clamping barrels, the line bundling ring is made to fall off and the suture line is tightened through the rotation of the two expansion claws, and compared with the prior art, the automatic suture line tightening device can automatically sew and tighten the suture line, is easy to operate and saves time and labor.

Description

Technical Field

[0001] The present invention belongs to the technical field of medical devices, and in particular relates to a suturing device for treating patent foramen ovale. Background Art

[0002] During the fetal period, the lungs have not yet exchanged gases, and the pressure in the right atrium is higher than that in the left atrium. The foramen ovale allows blood from the right atrium to flow to the left atrium, ensuring the fetus's oxygen and nutrient supply.

[0003] After the baby is born, with the establishment of pulmonary circulation, the left atrial pressure increases and the foramen ovale will gradually close functionally. Most cases complete anatomical closure within 1 year of age, but in some people the foramen ovale fails to close normally, resulting in patent foramen ovale.

[0004] If patent foramen ovale is not treated in time, it may pose potential risks. Currently, the treatment for patent foramen ovale is generally to use a suture device.

[0005] Chinese patent application No. 202322573219.8 discloses a patent foramen ovale suturing device, comprising an outer tube, two telescopic puncture needles symmetrically arranged inside the outer tube, a suture thread arranged between the two telescopic puncture needles, and a sliding sleeve sleeved on the outside of the outer tube, a rubber ring arranged near the side wall of the puncture needle. When the device is sutured, the two puncture needles of the device are passed through the patent foramen ovale, the two puncture needles are moved through the cardiac septum, the sleeve is slid to allow the rubber ring to pass through the puncture needles, the suture thread on the puncture needles is knotted, and the suturing is completed.

[0006] The above technology has the following problems: the sutures of the patent foramen ovale suture device need to be manually knotted by medical staff to complete the suturing, which is a complicated and tedious operation, and is time-consuming and labor-intensive.

[0007] In view of this, a suturing device for treating patent foramen ovale is designed to solve the above problems. Summary of the Invention

[0008] In order to solve the problems raised in the above background technology, the present invention provides a suturing device for treating patent foramen ovale, which has the characteristics of being able to automatically sew and tighten the suture thread, being easy to operate, and saving time and effort.

[0009] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: A suturing device for treating patent foramen ovale, comprising: an inner cylinder, a puncture sliding outer cylinder, two expansion claws and a tightening sliding outer cylinder are respectively provided on the outer side of the inner cylinder from the suture puncture side to the tightening side, a sliding drive mechanism is installed between the puncture sliding outer cylinder and the inner cylinder, two puncture needles are symmetrically provided on the outer side of the puncture sliding outer cylinder, a suture is tied between the two puncture needles, a rotation drive mechanism is installed between the two expansion claws and the inner cylinder, a binding coil is tightened between the two expansion claws that are rotated to the maximum angle to form an advantageous angle, and two holes formed by the tightening of the binding coil cover the two puncture needles, a sliding follower mechanism is installed between the tightening sliding outer cylinder and the puncture sliding outer cylinder, two wire clamping cylinders are symmetrically provided on the outer side of the tightening sliding outer cylinder, and the central axes of the two wire clamping cylinders coincide with the central axes of the two puncture needles respectively.

[0010] Furthermore, the sliding drive mechanism includes a driving groove provided inside the inner cylinder and a sliding groove provided on the puncture sliding outer cylinder near the inner cylinder side, an operating rod is slidingly provided inside the driving groove, the operating rod is close to the tightening sliding outer cylinder end, that is, the handle end extends out of the inner cylinder, the inner cylinder is close to the puncture sliding outer cylinder end and extends to the inside of the sliding groove, the operating rod is close to the puncture sliding outer cylinder end, that is, the pulling end extends out of the inner cylinder and extends to the inside of the sliding groove and is fixed to the puncture sliding outer cylinder, a connecting spring is provided inside the sliding groove outside the operating rod, and the connecting spring is located between the side wall of the inner cylinder close to the puncture sliding outer cylinder and the sliding groove.

[0011] Furthermore, the rotation drive mechanism includes a second gear fixedly sleeved on the operating rod, two rotating arc grooves symmetrically opened on the inner cylinder and a first follower shaft connected to the inner cylinder through a bearing, the two rotating arc grooves correspond to the positions of the two expansion claws, the two expansion claws are close to each other on the side walls and respectively pass through the two rotating arc grooves to extend to the inside of the driving groove and are fixed with a connecting shaft, the connecting shaft is connected to the inner wall of the inner cylinder through a bearing away from the second gear end, the connecting shaft is fixedly sleeved with a third gear near the side wall of the second gear, the two third gears are of different sizes, the large-sized third gear is meshed with the second gear, the first follower shaft is located between the second gear and the small-sized third gear, the first follower shaft is fixedly sleeved with a first gear near the second gear end, and the first gear is meshed with the second gear and the small-sized third gear.

[0012] Furthermore, the sliding follower mechanism includes two second racks symmetrically fixed to the inner wall of the sliding groove, two second follower shafts symmetrically arranged inside the sliding groove, and two first racks symmetrically fixed to the tightening sliding outer cylinder near the side wall of the puncture sliding outer cylinder, the second rack is located at a position on the inner cylinder close to the tightening sliding outer cylinder side, the two second follower shafts are located between the two second racks and the inner cylinder and both ends are connected to the inner wall of the puncture sliding outer cylinder through bearings, a fourth gear is fixedly sleeved on the second follower shaft, the two first racks extend away from the tightening sliding outer cylinder end to the inside of the sliding groove and are respectively located on the side close to each other of the two fourth gears, the fourth gear is meshed with the adjacent second rack and the first rack, and a first sliding through groove is provided on the first rack, the first sliding through groove corresponds to the position of the expansion claw and the expansion claw is located inside the first sliding through groove.

[0013] Furthermore, a storage drive mechanism is respectively installed between the two puncture needles and the puncture sliding outer cylinder, and between the two clamping cylinders and the tightening sliding outer cylinder.

[0014] Furthermore, the storage drive mechanism includes two sixth gears fixedly sleeved on the operating rod, two second sliding grooves symmetrically opened on the inner cylinder, and two storage grooves symmetrically opened on the puncture sliding outer cylinder and the tightening sliding outer cylinder. The two sixth gears are respectively located inside the driving groove and the sliding groove. The two storage grooves on the tightening sliding outer cylinder correspond to the positions of the two second sliding grooves. The two storage grooves correspond to the positions of the two puncture needles and the wire clamping cylinder. A double-headed screw is respectively provided on the sides close to each other of the two storage grooves. One end of the double-headed screw passes through the puncture sliding outer cylinder and the tightening sliding outer cylinder and extends to the outside of the puncture sliding outer cylinder and the tightening sliding outer cylinder and is fixedly sleeved with a fifth gear. The bearing is connected to the through section, and the other end is connected to the inner wall of the puncture sliding outer cylinder and the tightening sliding outer cylinder through a bearing. The two fifth gears on the tightening sliding outer cylinder respectively pass through the two second sliding through grooves and extend to the inside of the driving groove and mesh with the adjacent sixth gear. The two fifth gears on the puncture sliding outer cylinder extend to the inside of the sliding groove and mesh with the adjacent sixth gear. The double-headed screw is symmetrically connected to two movable hinged seats through a transmission nut. The two movable hinged seats are respectively hinged with movable rods, and the other ends of the two movable rods are respectively hinged with fixed hinged seats. The other ends of the two fixed hinged seats are fixedly connected to a mounting plate, and the two puncture needles and the two wire clamping barrels are fixedly connected to the two mounting plates.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention is provided with two movable puncture needles, two rotating expansion claws and two movable wire clamping barrels. Sutures are arranged on the two movable puncture needles, and binding coils are arranged on the two rotating expansion claws. The device passes the sutures through the heart valve and clamps the binding coils into the two wire clamping barrels through the movement of the two puncture needles. The sutures are tightened by the movement of the two wire clamping barrels, and the binding coils are removed and the sutures are tightened by the rotation of the two expansion claws. Compared with the existing technology, the device can automatically sew and tighten the sutures, is simple to operate, and saves time and effort.

[0017] 2. The two puncture needles and two wire clamping cylinders of the present invention can be respectively accommodated in the puncture sliding outer cylinder and the tightening sliding outer cylinder, thereby preventing the puncture needles from scratching the patient when the device is taken out, thereby improving treatment safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view of the present invention;

[0019] Figure 2 It is a cross-sectional view of the present invention;

[0020] Figure 3 For the present invention Figure 2 Enlarged view of point A in the middle;

[0021] Figure 4 For the present invention Figure 2 Enlarged view of point B in the middle;

[0022] Figure 5 It is a schematic diagram of the local structure of the present invention;

[0023] Figure 6 This is a side view of the wire clamp barrel of the present invention;

[0024] Figure 7 For the present invention Figure 2 Cross-sectional view in the AA direction;

[0025] In the figure: 1, puncture sliding outer cylinder; 2, expansion claw; 3, inner cylinder; 4, tightening sliding outer cylinder; 5, puncture needle; 6, suture; 7, wire clamping cylinder; 8, wire coil;

[0026] 101. Connecting spring; 102. Operating lever; 103. Driving slot; 104. Sliding slot;

[0027] 201, connecting shaft; 202, first follower shaft; 203, first gear; 204, second gear; 205, third gear; 206, rotating arc slot;

[0028] 301, first sliding groove; 302, first rack; 303, second follower shaft; 304, second rack; 305, fourth gear;

[0029] 401. Mounting plate; 402. Fixed hinge seat; 403. Movable rod; 404. Second sliding slot; 405. Fifth gear; 406. Sixth gear; 407. Storage slot; 408. Double-headed screw; 409. Movable hinge seat. DETAILED DESCRIPTION

[0030] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making creative efforts are within the scope of protection of the present invention.

[0031] Example 1

[0032] The present invention provides the following technical solutions: A suturing device for treating patent foramen ovale, comprising: an inner cylinder 3, a puncture sliding outer cylinder 1, two expansion claws 2 and a tightening sliding outer cylinder 4 are respectively provided on the outside of the inner cylinder 3 from the suture puncture side to the tightening side, a sliding drive mechanism is assembled between the puncture sliding outer cylinder 1 and the inner cylinder 3, two puncture needles 5 are symmetrically arranged on the outside of the puncture sliding outer cylinder 1, a suture 6 is tied between the two puncture needles 5, a rotation drive mechanism is assembled between the two expansion claws 2 and the inner cylinder 3, a binding coil 8 is tightened between the two expansion claws 2 that are rotated to the maximum angle to form an advantageous angle, and the two holes formed by the tightening of the binding coil 8 cover the two puncture needles 5, a sliding follower mechanism is assembled between the tightening sliding outer cylinder 4 and the puncture sliding outer cylinder 1, two wire clamping cylinders 7 are symmetrically arranged on the outside of the tightening sliding outer cylinder 4, and the central axes of the two wire clamping cylinders 7 coincide with the central axes of the two puncture needles 5 respectively.

[0033] See attached Figure 1 、 2 Before using the device, tie the two ends of the suture 6 and put them on the two puncture needles 5, put the coil 8 on the two expansion claws 2, and rotate the sliding drive mechanism to drive the rotation drive mechanism to rotate. During the rotation of the rotation drive mechanism, the two expansion claws 2 are driven to rotate and expand, tightening the coil 8;

[0034] When the device is used, the puncture sliding outer cylinder 1 is passed through the patent foramen ovale, and the sliding drive mechanism is pulled to drive the puncture sliding outer cylinder 1 to slide on the inner cylinder 3 toward the tightening sliding outer cylinder 4, and the puncture sliding outer cylinder 1 drives the two puncture needles 5 to slide in the same direction, and the two puncture needles 5 drive the suture 6 to pass through the cardiac septum around the patent foramen ovale. During the sliding process of the puncture sliding outer cylinder 1, the tightening sliding outer cylinder 4 is driven on the inner cylinder 3 to slide in the direction close to the puncture sliding outer cylinder 1 through the sliding follower mechanism, and the tightening sliding outer cylinder 4 drives the two wire clamping cylinders 7 to slide in the same direction. When the two puncture needles 5 slide to the limit, the two puncture needles 5 and the knotted suture 6 pass through the bundle coil 8 and are inserted into the two wire clamping cylinders 7;

[0035] Pushed by the sliding drive mechanism, the puncture sliding outer cylinder 1 slides on the inner cylinder 3 in the direction away from the tightening sliding outer cylinder 4, driving the two puncture needles 5 to slide in the same direction. At the same time, the tightening sliding outer cylinder 4 slides on the inner cylinder 3 in the direction away from the puncture sliding outer cylinder 1, driving the two wire clamping cylinders 7 to slide in the same direction. The two puncture needles 5 gradually break away from the two wire clamping cylinders 7. Due to the wire clamping structure of the two wire clamping cylinders 7, the two ends of the suture 6 break away from the two puncture needles 5 and are stuck in the two wire clamping cylinders 7. At the same time, the sliding of the two wire clamping cylinders 7 drives the suture 6 to tighten until it is reset and stops.

[0036] The puncture sliding outer cylinder 1 is taken out, and the sliding drive mechanism rotates in the opposite direction, driving the rotation drive mechanism to rotate in the opposite direction. During the reverse rotation of the rotation drive mechanism, the two expansion claws 2 are driven to rotate and contract. As the two expansion claws 2 contract, the binding coil 8 slides off the two expansion claws 2 and tightens the suture 6. The puncture sliding outer cylinder 1 is continued to be taken out, and the two ends of the suture 6 are detached from the two wire clamping cylinders 7 to achieve the treatment of patent foramen ovale.

[0037] Specifically, the sliding drive mechanism includes a driving groove 103 provided inside the inner cylinder 3 and a sliding groove 104 provided on the side of the puncture sliding outer cylinder 1 close to the inner cylinder 3. An operating rod 102 is slidingly provided inside the driving groove 103. The operating rod 102 is close to the end of the tightening sliding outer cylinder 4, that is, the handle end, extending out of the inner cylinder 3, and the end of the inner cylinder 3 close to the puncture sliding outer cylinder 1 extends to the inside of the sliding groove 104. The operating rod 102 is close to the end of the puncture sliding outer cylinder 1, that is, the pulling end, extending out of the inner cylinder 3 and extending to the inside of the sliding groove 104 and fixedly connected to the puncture sliding outer cylinder 1. A connecting spring 101 is provided inside the sliding groove 104 and outside the operating rod 102. The connecting spring 101 is located between the side wall of the inner cylinder 3 close to the puncture sliding outer cylinder 1 and the sliding groove 104.

[0038] See attached Figure 2 The sliding drive mechanism is driven by a handle to pull the operating rod 102, and the operating rod 102 drives the puncture sliding outer cylinder 1 to slide on the inner cylinder 3 toward the tightening sliding outer cylinder 4, so as to realize the sliding drive of the puncture sliding outer cylinder 1 on the inner cylinder 3 toward the tightening sliding outer cylinder 4;

[0039] The handle pushes the operating rod 102 to achieve sliding driving of the puncture sliding outer cylinder 1 on the inner cylinder 3 in a direction away from the tightening sliding outer cylinder 4.

[0040] Specifically, the rotation drive mechanism includes a second gear 204 fixedly sleeved on the operating rod 102, two rotating arc grooves 206 symmetrically opened on the inner cylinder 3, and a first follower shaft 202 connected to the inner cylinder 3 through a bearing. The two rotating arc grooves 206 correspond to the positions of the two expansion claws 2. The two expansion claws 2 are close to each other on the side wall and pass through the two rotating arc grooves 206 to extend to the inside of the driving groove 103. A connecting shaft 201 is fixedly connected. The end of the connecting shaft 201 away from the second gear 204 is connected to the inner cylinder 3 through a bearing. The inner wall of the cylinder 3 is connected, and the connecting shaft 201 is fixedly sleeved with the third gear 205 near the side wall of the second gear 204. The two third gears 205 are of different sizes. The large-sized third gear 205 is meshed and connected with the second gear 204. The first follower shaft 202 is located between the second gear 204 and the small-sized third gear 205. The first follower shaft 202 is fixedly sleeved with the first gear 203 near the end of the second gear 204. The first gear 203 is meshed and connected with the second gear 204 and the small-sized third gear 205.

[0041] See attached Figure 2 、 3 5. The rotation drive mechanism is driven by the handle to rotate the operating rod 102, the operating rod 102 drives the second gear 204 to rotate, the second gear 204 drives the large-sized third gear 205 and the first gear 203 that are meshed and connected to rotate in the opposite direction, and the first gear 203 drives the small-sized third gear 205 that is meshed and connected to rotate in the opposite direction, that is, the two third gears 205 of different sizes rotate in the opposite direction, the two third gears 205 drive the two connecting shafts 201 to rotate in the opposite direction, and the two connecting shafts 201 drive the two expansion claws 2 to rotate in the opposite direction in the two rotating arc grooves 206. During the reverse rotation of the two expansion claws 2, the tensioning coil 8 is continuously expanded to realize the expansion rotation drive of the two expansion claws 2;

[0042] The handle drives the operating rod 102 to rotate in the opposite direction to realize the contraction and rotation drive of the two expansion claws 2.

[0043] Specifically, the sliding follower mechanism includes two second racks 304 symmetrically fixed to the inner wall of the sliding groove 104, two second follower shafts 303 symmetrically arranged inside the sliding groove 104, and two first racks 302 symmetrically fixed to the side wall of the tightening sliding outer cylinder 4 close to the puncture sliding outer cylinder 1. The second rack 304 is located on the side of the inner cylinder 3 close to the tightening sliding outer cylinder 4. The two second follower shafts 303 are located between the two second racks 304 and the inner cylinder 3 and are connected to the inner wall of the puncture sliding outer cylinder 1 at both ends through bearings. The fourth gear 305 is fixedly sleeved on the second follower shaft 303, and the two first racks 302 extend away from the end of the tightening sliding outer cylinder 4 to the inside of the sliding groove 104 and are respectively located on the side close to each other of the two fourth gears 305. The fourth gear 305 is meshed with the adjacent second rack 304 and the first rack 302. A first sliding groove 301 is formed on the first rack 302, and the first sliding groove 301 corresponds to the position of the expansion claw 2 and the expansion claw 2 is located inside the first sliding groove 301.

[0044] See attached Figure 2 and 4 The sliding follower mechanism is driven by the sliding puncture sliding outer cylinder 1 to drive the two second racks 304 to slide in the same direction. During the sliding process of the two second racks 304, the two fourth gears 305 are driven to rotate. During the rotation process of the two fourth gears 305, the two first racks 302 are driven to move toward the puncture sliding outer cylinder 1. The two first racks 302 drive the tightening sliding outer cylinder 4 to move toward the puncture sliding outer cylinder 1, thereby realizing the sliding follower drive of the tightening sliding outer cylinder 4.

[0045] The provision of the first sliding groove 301 can prevent the two expansion claws 2 from affecting the movement of the two first racks 302 .

[0046] Example 2

[0047] Specifically, a storage drive mechanism is respectively installed between the two puncture needles 5 and the puncture sliding outer cylinder 1 , and between the two clamping cylinders 7 and the tightening sliding outer cylinder 4 .

[0048] See attached Figure 2 Before using the device, tie the two ends of the suture 6 and put them on the two puncture needles 5, and put the coil 8 on the two expansion claws 2 (the two expansion claws 2 are parallel at this time);

[0049] When the device is used, the puncture sliding outer cylinder 1 is passed through the patent foramen ovale, and the sliding drive mechanism rotates, driving the storage drive mechanism and the rotation drive mechanism to rotate. During the rotation of the storage drive mechanism, the two puncture needles 5 and the two clamping cylinders 7 are extended out of the puncture sliding outer cylinder 1 and the tightening sliding outer cylinder 4. At the same time, during the rotation of the rotation drive mechanism, the two expansion claws 2 are rotated and expanded (at this time, the two expansion claws 2 are larger than the parallel state), tightening the binding coil 8;

[0050] The sliding drive mechanism pulls and drives the puncture sliding outer cylinder 1 to slide on the inner cylinder 3 toward the tightening sliding outer cylinder 4. The puncture sliding outer cylinder 1 drives the two puncture needles 5 to slide in the same direction. The two puncture needles 5 drive the suture 6 to pass through the cardiac septum around the patent foramen ovale. During the sliding process of the puncture sliding outer cylinder 1, the tightening sliding outer cylinder 4 is driven by the sliding follower mechanism to slide on the inner cylinder 3 toward the puncture sliding outer cylinder 1. The tightening sliding outer cylinder 4 drives the two wire clamping cylinders 7 to slide in the same direction. When the two puncture needles 5 slide to the limit, the two puncture needles 5 and the knotted suture 6 pass through the bundle coil 8 and are inserted into the two wire clamping cylinders 7.

[0051] Pushed by the sliding drive mechanism, the puncture sliding outer cylinder 1 slides on the inner cylinder 3 in the direction away from the tightening sliding outer cylinder 4, driving the two puncture needles 5 to slide in the same direction. At the same time, the tightening sliding outer cylinder 4 slides on the inner cylinder 3 in the direction away from the puncture sliding outer cylinder 1, driving the two wire clamping cylinders 7 to slide in the same direction. The two puncture needles 5 gradually break away from the two wire clamping cylinders 7. Due to the wire clamping structure of the two wire clamping cylinders 7, the two ends of the suture 6 break away from the two puncture needles 5 and are stuck in the two wire clamping cylinders 7. At the same time, the sliding of the two wire clamping cylinders 7 drives the suture 6 to tighten until it is reset and stops.

[0052] The puncture sliding outer cylinder 1 is taken out, and the sliding drive mechanism rotates in the opposite direction, driving the storage drive mechanism and the rotation drive mechanism to rotate in the opposite direction. During the reverse rotation of the storage drive mechanism, the two puncture needles 5 and the two wire clamping cylinders 7 are driven to shrink and be stored in the puncture sliding outer cylinder 1 and the tightening sliding outer cylinder 4. At the same time, during the reverse rotation of the rotation drive mechanism, the two expansion claws 2 are driven to rotate and shrink (at this time, the two expansion claws 2 are smaller than the parallel state). As the two expansion claws 2 shrink, the binding coil 8 slides off the two expansion claws 2 and tightens the suture 6. The puncture sliding outer cylinder 1 is continued to be taken out, and the two ends of the suture 6 are detached from the two wire clamping cylinders 7 to achieve the treatment of patent foramen ovale.

[0053] Specifically, the storage drive mechanism includes two sixth gears 406 fixedly sleeved on the operating rod 102, two second sliding grooves 404 symmetrically opened on the inner cylinder 3, and two storage grooves 407 symmetrically opened on the puncture sliding outer cylinder 1 and the tightening sliding outer cylinder 4. The two sixth gears 406 are respectively located inside the driving groove 103 and the sliding groove 104. The two storage grooves 407 on the tightening sliding outer cylinder 4 correspond to the positions of the two second sliding grooves 404. The two storage grooves 407 correspond to the positions of the two puncture needles 5 and the card line cylinder 7. The two storage grooves 407 are close to each other and are respectively provided with double-headed screws 408. One end of the double-headed screw 408 passes through the puncture sliding outer cylinder 1 and the tightening sliding outer cylinder 4 and extends to the outside of the puncture sliding outer cylinder 1 and the tightening sliding outer cylinder 4 and is fixedly sleeved with the fifth gear 405. It is connected to the penetration section, and the other end is connected to the inner wall of the puncture sliding outer cylinder 1 and the tightening sliding outer cylinder 4 through a bearing. The two fifth gears 405 on the tightening sliding outer cylinder 4 respectively pass through the two second sliding grooves 404 and extend to the inside of the driving groove 103 and mesh with the adjacent sixth gear 406. The two fifth gears 405 on the puncture sliding outer cylinder 1 extend to the inside of the sliding groove 104 and mesh with the adjacent sixth gear 406. The double-headed screw 408 is symmetrically connected to two movable hinged seats 409 through a transmission nut. The two movable hinged seats 409 are respectively hinged with movable rods 403, and the other ends of the two movable rods 403 are respectively hinged with fixed hinged seats 402. The other ends of the two fixed hinged seats 402 are fixedly connected to the mounting plate 401, and the two puncture needles 5 and the two wire clamping barrels 7 are fixed to the two mounting plates 401.

[0054] See attached Figure 2 and 7 The storage drive mechanism is driven by the handle to rotate the operating rod 102, and the operating rod 102 drives the two sixth gears 406 to rotate. The two sixth gears 406 drive the two meshing fifth gears 405 to rotate in the opposite direction. The two fifth gears 405 drive the two double-headed screws 408 to rotate. During the rotation of the two double-headed screws 408, the two movable hinge seats 409 on the same double-headed screw 408 move toward each other on the double-headed screw 408. During the movement of the two movable hinge seats 409, the two movable rods 403 are driven to extend outward. The two movable rods 403 drive the two fixed hinge seats 402 to extend outward. The two fixed hinge seats 402 drive the mounting plate 401 to extend outward. The mounting plate 401 drives the puncture needle 5 and the wire clamping barrel 7 to extend outward, so as to realize the extension drive of the two puncture needles 5 and the two wire clamping barrels 7;

[0055] The handle drives the operating rod 102 to rotate in the opposite direction to realize the storage drive of the two puncture needles 5 and the two wire clamping barrels 7;

[0056] The provision of the second sliding through groove 404 can avoid affecting the sliding of the tightening sliding outer cylinder 4 .

[0057] Working principle of the present invention:

[0058] Before using the device, tie the two ends of the suture 6 and put them on the two puncture needles 5, and put the coil 8 on the two expansion claws 2 (the two expansion claws 2 are parallel at this time);

[0059] When the device is used, the puncture sliding outer cylinder 1 is passed through the unclosed foramen ovale, and the operating rod 102 is rotated by the handle. The operating rod 102 drives the sixth gear 406 and the second gear 204 to rotate, and the sixth gear 406 drives the fifth gear 405 to rotate in the opposite direction. The fifth gear 405 drives the double-headed screw 408 to rotate. During the rotation of the double-headed screw 408, the movable hinge seat 409 moves on the double-headed screw 408 in the direction of approaching each other. During the movement of the movable hinge seat 409, the movable rod 403 is extended outward, and the movable rod 403 drives the fixed hinge seat 402 to The fixed hinge seat 402 drives the mounting plate 401 to extend outward, and the mounting plate 401 drives the puncture needle 5 and the wire clamping barrel 7 to extend outward. At the same time, the second gear 204 drives the large-sized third gear 205 and the first gear 203 to rotate, and the first gear 203 drives the small-sized third gear 205 to rotate. The third gear 205 drives the connecting shaft 201 to rotate in the opposite direction. The connecting shaft 201 drives the expansion claw 2 to rotate in the rotating arc groove 206. During the rotation of the expansion claw 2, the tensioned coil 8 is expanded (at this time, the two expansion claws 2 are larger than the parallel state);

[0060] Pull the operating rod 102, the operating rod 102 drives the puncture sliding outer cylinder 1 to slide on the inner cylinder 3 toward the tightening sliding outer cylinder 4, the puncture sliding outer cylinder 1 drives the two puncture needles 5 to slide in the same direction, the two puncture needles 5 drive the suture 6 to pass through the cardiac septum around the patent foramen ovale, during the sliding process of the puncture sliding outer cylinder 1, the second rack 304 is driven to slide in the same direction, the second rack 304 is driven to rotate during the sliding process, and the fourth gear 305 is driven to move in the direction of approaching the puncture sliding outer cylinder 1 during the rotation process of the fourth gear 305, the first rack 302 is driven to move in the direction of approaching the puncture sliding outer cylinder 1, the first rack 302 drives the tightening sliding outer cylinder 4 to move in the direction of approaching the puncture sliding outer cylinder 1, the tightening sliding outer cylinder 4 drives the two wire clamping cylinders 7 to slide in the same direction, when the two puncture needles 5 slide to the limit, the two puncture needles 5 and the knotted suture 6 pass through the bundle coil 8 and are inserted into the two wire clamping cylinders 7;

[0061] Push the operating rod 102, the puncture sliding outer cylinder 1 slides on the inner cylinder 3 in the direction away from the tightening sliding outer cylinder 4, driving the two puncture needles 5 to slide in the same direction. At the same time, the tightening sliding outer cylinder 4 slides on the inner cylinder 3 in the direction away from the puncture sliding outer cylinder 1, driving the two wire clamping cylinders 7 to slide in the same direction. The two puncture needles 5 gradually break away from the two wire clamping cylinders 7. Due to the wire clamping structure of the two wire clamping cylinders 7, the two ends of the suture 6 break away from the two puncture needles 5 and are stuck in the two wire clamping cylinders 7. At the same time, the sliding of the two wire clamping cylinders 7 drives the suture 6 to tighten until it is reset and stops.

[0062] The puncture sliding outer cylinder 1 is taken out, and the operating rod 102 is rotated in the opposite direction by the handle. The two puncture needles 5 and the two wire clamping cylinders 7 are retracted and stored in the puncture sliding outer cylinder 1 and the tightening sliding outer cylinder 4. At the same time, the two expansion claws 2 are rotated and retracted (at this time, the two expansion claws 2 are less than the parallel state). As the two expansion claws 2 retract, the binding coil 8 slides off the two expansion claws 2 and tightens the suture 6. The puncture sliding outer cylinder 1 is continued to be taken out, and the two ends of the suture 6 are detached from the two wire clamping cylinders 7 to achieve the treatment of patent foramen ovale.

[0063] While 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 these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A suturing device for treating patent foramen ovale, characterized in that ,include: An inner cylinder (3) is provided on the outer side of the inner cylinder (3), and a puncture sliding outer cylinder (1), two expansion claws (2) and a tightening sliding outer cylinder (4) are respectively provided from the suture puncture side to the tightening side. A sliding drive mechanism is installed between the puncture sliding outer cylinder (1) and the inner cylinder (3). Two puncture needles (5) are symmetrically provided on the outer side of the puncture sliding outer cylinder (1). A suture (6) is tightened between the two puncture needles (5). A rotation drive mechanism is installed between the two expansion claws (2) and the inner cylinder (3). A bundle coil (8) is tightened between the two expansion claws (2) that rotate to the maximum angle to form an advantageous angle. Two holes formed by the tightening of the bundle coil (8) cover the two puncture needles (5). A sliding follower mechanism is installed between the tightening sliding outer cylinder (4) and the puncture sliding outer cylinder (1). Two wire clamping cylinders (7) are symmetrically provided on the outer side of the tightening sliding outer cylinder (4). The central axes of the two wire clamping cylinders (7) coincide with the central axes of the two puncture needles (5).

2. The suturing device for treating patent foramen ovale according to claim 1, characterized in that: The sliding drive mechanism comprises a driving groove (103) provided inside the inner cylinder (3) and a sliding groove (104) provided on the side of the puncture sliding outer cylinder (1) close to the inner cylinder (3); an operating rod (102) is slidingly provided inside the driving groove (103); the operating rod (102) is close to the tightening sliding outer cylinder (4), that is, the handle end, extending outside the inner cylinder (3); the inner cylinder (3) is close to the puncture sliding outer cylinder (1) and extends to the inside of the sliding groove (104); the operating rod (102) is close to the puncture sliding outer cylinder (1), that is, the pulling end, extending outside the inner cylinder (3) and extending to the inside of the sliding groove (104) and fixedly connected to the puncture sliding outer cylinder (1); a connecting spring (101) is provided inside the sliding groove (104) and outside the operating rod (102); the connecting spring (101) is located between the side wall of the inner cylinder (3) close to the puncture sliding outer cylinder (1) and the sliding groove (104).

3. The suturing device for treating patent foramen ovale according to claim 2, characterized in that: The rotation drive mechanism comprises a second gear (204) fixedly sleeved on the operating rod (102), two rotating arc grooves (206) symmetrically arranged on the inner cylinder (3), and a first follower shaft (202) connected to the inner cylinder (3) via a bearing. The two rotating arc grooves (206) correspond to the positions of the two expansion claws (2). The two expansion claws (2) are close to the side walls and respectively pass through the two rotating arc grooves (206) to extend to the inside of the driving groove (103). A connecting shaft (201) is fixedly connected thereto. The end of the connecting shaft (201) away from the second gear (204) is connected to the inner cylinder (3) via a bearing. The inner wall is connected, the connecting shaft (201) is fixedly sleeved with a third gear (205) near the side wall of the second gear (204), the two third gears (205) are of different sizes, the large-sized third gear (205) is meshed with the second gear (204), the first follower shaft (202) is located between the second gear (204) and the small-sized third gear (205), the first follower shaft (202) is fixedly sleeved with a first gear (203) near the end of the second gear (204), and the first gear (203) is meshed with the second gear (204) and the small-sized third gear (205).

4. The suturing device for treating patent foramen ovale according to claim 3, characterized in that: The sliding follower mechanism comprises two second racks (304) symmetrically fixed to the inner wall of the sliding groove (104), two second follower shafts (303) symmetrically arranged inside the sliding groove (104), and two first racks (302) symmetrically fixed to the side wall of the tightening sliding outer cylinder (4) close to the puncture sliding outer cylinder (1), the second rack (304) is located at the side of the inner cylinder (3) close to the tightening sliding outer cylinder (4), the two second follower shafts (303) are located between the two second racks (304) and the inner cylinder (3), and the two ends of the second follower shafts (303) are connected to the inner wall of the puncture sliding outer cylinder (1) through bearings. A fourth gear (305) is fixedly sleeved on the second follower shaft (303), and the two first racks (302) extend away from the end of the tightening sliding outer cylinder (4) to the inside of the sliding groove (104) and are respectively located on the sides close to each other of the two fourth gears (305). The fourth gear (305) is meshed and connected with the adjacent second rack (304) and the first rack (302). A first sliding groove (301) is provided on the first rack (302), and the first sliding groove (301) corresponds to the position of the expansion claw (2), and the expansion claw (2) is located inside the first sliding groove (301).

5. The suturing device for treating patent foramen ovale according to claim 4, characterized in that: A storage drive mechanism is respectively installed between the two puncture needles (5) and the puncture sliding outer cylinder (1), and between the two clamping cylinders (7) and the tightening sliding outer cylinder (4).

6. The suturing device for treating patent foramen ovale according to claim 5, characterized in that: The receiving drive mechanism comprises two sixth gears (406) fixedly sleeved on the operating rod (102), two second sliding grooves (404) symmetrically arranged on the inner cylinder (3), and two receiving grooves (407) symmetrically arranged on the puncture sliding outer cylinder (1) and the tightening sliding outer cylinder (4). The two sixth gears (406) are respectively located inside the driving groove (103) and the sliding groove (104). The two receiving grooves (407) on the tightening sliding outer cylinder (4) are connected to the two receiving grooves (407). The positions of the two second sliding grooves (404) correspond to each other, and the two receiving grooves (407) correspond to the positions of the two puncture needles (5) and the clamping tube (7). The two receiving grooves (407) are respectively provided with double-headed screws (408) on the sides close to each other. One end of the double-headed screw (408) passes through the puncture sliding outer tube (1) and the tightening sliding outer tube (4) and extends to the outside of the puncture sliding outer tube (1) and the tightening sliding outer tube (4) and is fixedly sleeved with the fifth gear (405). The other end is connected to the inner wall of the puncture sliding outer cylinder (1) and the tightening sliding outer cylinder (4) through a bearing. The two fifth gears (405) on the tightening sliding outer cylinder (4) respectively pass through the two second sliding grooves (404) and extend to the inside of the driving groove (103) and mesh with the adjacent sixth gear (406). The two fifth gears (405) on the puncture sliding outer cylinder (1) extend to the inside of the sliding groove (104) and mesh with the adjacent sixth gear (406). The double-headed screw (408) is symmetrically connected to two movable hinged seats (409) through a transmission nut, and the two movable hinged seats (409) are respectively hinged with movable rods (403), and the other ends of the two movable rods (403) are respectively hinged with fixed hinged seats (402), and the other ends of the two fixed hinged seats (402) are fixedly connected to mounting plates (401), and two puncture needles (5) and two wire clamping barrels (7) are fixedly connected to the two mounting plates (401).

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