A patent foramen ovale sealer

Abstract

The application discloses an oval hole unclose suture device, relates to the technical field of medical devices, and can solve the problems that the existing suture device is difficult to capture the secondary septum and has high operation difficulty. The oval hole unclose suture device comprises a first suture assembly, a second suture assembly, a first support assembly, a second support assembly and a guide head. The device further comprises a support opening and closing assembly and an auxiliary support assembly. The auxiliary support assembly comprises an auxiliary support frame used for clamping the secondary septum in cooperation with the first support assembly, and the included angle between the auxiliary support frame and the guide head is obtuse. The first support assembly comprises a first support frame and a first blocking frame which are rotationally connected, and the first blocking frame is longer than the first support frame. The second support assembly comprises a second support frame and a second blocking frame which are rotationally connected, and the second blocking frame is shorter than the second support frame. The support opening and closing assembly is movably connected with the first support frame and the second support frame, and the guide head is movably connected with the first blocking frame and the second blocking frame.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a patent foramen ovale suture device. Background Technology

[0002] Patent foramen ovale (PFO) is a congenital heart defect characterized by a tunnel-like passage between the left and right atria. The most mature treatment currently involves placing a metallic occluder at the PFO site via femoral vein intervention to close the passage between the left and right atria. However, placing a metallic occluder can lead to unavoidable complications, such as arrhythmias, occluder displacement or dislodgement, thrombosis, and nickel allergy. Furthermore, the presence of a metallic occluder in the atrial septum may hinder future atrial septal punctures and left ventricular interventions, and some patients may not tolerate long-term antiplatelet therapy post-procedure.

[0003] The improved technique involves using interventional suturing, where a needle is inserted through the tissue surrounding the patent foramen ovale for suturing, followed by suturing with sutures. However, the currently used patent foramen ovale suture device employs a single, unilateral needle insertion. The first instrument sutures the secondary septum, the second instrument sutures the primary septum, and the third instrument performs the locking and tangential suture. This results in a cumbersome and inefficient procedure, and the multiple accesses may cause secondary damage to the patient. Furthermore, the angle and relative position between the suture needle and the support frame are fixed during suturing, making it impossible to adjust according to different cases.

[0004] To address the aforementioned issues, existing improved techniques involve suturing with a single suture device. However, existing suture devices suffer from drawbacks such as difficulty in effectively capturing secondary septa and excessively high operational complexity due to the relatively sliding needle and support frame designed to accommodate various tunnel sizes.

[0005] Against this backdrop, the inventors designed a patent foramen ovale suture device that can solve at least one of the above-mentioned problems, and thus, this application is filed. Summary of the Invention

[0006] The purpose of this application is to provide a patent foramen ovale suture device to solve the problems of the prior art.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following solution: This application provides a patent foramen ovale suture device, including a first suture assembly, a second suture assembly, a first support assembly, and a second support assembly, for guiding the first suture assembly and the second suture assembly to penetrate the guide heads of the first support assembly and the second support assembly, respectively; It also includes a support opening and closing assembly for driving the first support assembly and the second support assembly to switch between folded and extended states, as well as an auxiliary support assembly; The auxiliary support assembly includes an auxiliary support frame for cooperating with the first support assembly to clamp the secondary compartment, and the auxiliary support frame makes an obtuse angle with the axial direction of the guide head; The first support assembly includes a first support frame and a first blocking frame that are rotatably connected, and the first blocking frame is longer than the first support frame. The second support assembly includes a second support frame and a second blocking frame that are rotatably connected, and the second blocking frame is shorter than the second support frame. The bracket opening and closing assembly is movably connected to the first support frame and the second support frame, and the guide head is movably connected to the first blocking frame and the second blocking frame.

[0008] Optionally, the first support assembly further includes a first blocking mesh disposed within the first blocking frame, and the second support assembly further includes a second blocking mesh disposed within the second blocking frame, wherein the size of the first blocking mesh is larger than the size of the second blocking mesh; The first support assembly further includes a first spring piece for preventing the first support frame and the first blocking frame from rotating past the dead point, the first spring piece being disposed on the first support frame or the first blocking frame; The second support assembly further includes a second spring piece for preventing the second support frame and the second blocking frame from rotating past their dead points, the second spring piece being disposed on the second support frame or the second blocking frame.

[0009] Optionally, the first suture assembly includes a first suture needle body, a first anchor head body disposed within the first suture needle body, and a first suture thread with one end connected to the first anchor head body; The first suture assembly also includes a first anchor head drive rod for driving the first anchor head body to extend out of the first suture needle body; The second suture assembly includes a second suture needle body, a second anchor head body disposed within the second suture needle body, and a second suture thread with one end connected to the second anchor head body; The second suture assembly also includes a second anchor head drive rod for driving the second anchor head body to extend out of the second suture needle body; The guide head is provided with a first guide groove and a second guide groove for mounting the first suture needle body and the second suture needle body. The first guide groove and the second guide groove are located on opposite sides of the guide head, and the extending directions of the first guide groove and the second guide groove pass through the first support assembly and the second support assembly in the folded state, respectively.

[0010] Optionally, the first suture needle body is provided with a first thread groove, and the second suture needle body is provided with a second thread groove; Both the first anchor head body and the second anchor head body are columnar structures. The first suture is fixedly connected to the first anchor head body through the first suture groove, and the second suture is fixedly connected to the second anchor head body through the second suture groove. A portion of the first anchor head drive rod is located inside the first suture needle body, and a portion of the second anchor head drive rod is located inside the second suture needle body.

[0011] Optionally, the first sewing assembly includes a first winding wheel and / or the second sewing assembly includes a second winding wheel; When the first sewing assembly includes a first winding wheel and the second sewing assembly includes a second winding wheel, the first suture thread and the second suture thread are respectively wound on the first winding wheel and the second winding wheel; In the case where only the first sewing assembly includes a first winding wheel or the second sewing assembly includes a second winding wheel, the ends of the first and second sewing threads away from the guide head are fixedly connected and wound around the first or second winding wheel.

[0012] Optionally, a housing assembly may also be included; The first suture assembly includes a first suture needle slide key and a first anchor head slide key protruding from the housing assembly, and a first suture needle slide seat and a first anchor head slide seat disposed within the housing assembly. The first suture needle slide key is disposed on the first suture needle slide seat, the first anchor head slide key is disposed on the first anchor head slide seat, the first anchor head slide seat is slidably connected to the first suture needle slide seat, and the first suture needle slide seat is slidably connected to the housing assembly. The first suture assembly further includes a first suture needle drive tube, and the first suture needle body is fixedly connected to the first suture needle slide through the first suture needle drive tube; The second suture assembly includes a second suture needle slide key and a second anchor head slide key protruding from the housing assembly, and a second suture needle slide seat and a second anchor head slide seat disposed within the housing assembly. The second suture needle slide key is disposed on the second suture needle slide seat, the second anchor head slide key is disposed on the second anchor head slide seat, the second anchor head slide seat is slidably connected to the second suture needle slide seat, and the second suture needle slide seat is slidably connected to the housing assembly. The second suture assembly also includes a second suture needle drive tube, and the second suture needle body is fixedly connected to the second suture needle slide via the second suture needle drive tube.

[0013] Optionally, the bracket opening and closing assembly includes a conical pusher, a pusher connecting seat and a central tube that are coaxially fixedly connected, as well as a pusher slide and a pusher key for driving the central tube to move along its axial direction. The pusher slide and the pusher key are fixedly connected, and the end of the central tube away from the pusher connecting seat is fixedly connected to the pusher slide. Both the first support frame and the second support frame are rotatably connected to the push head connecting seat.

[0014] Optionally, the auxiliary support frame has a strip-shaped clearance channel in the middle for avoiding the first stitching assembly; The auxiliary support assembly also includes an auxiliary reinforcing rod for increasing the strength of the auxiliary support frame, and an auxiliary support slide key and an auxiliary support slide for driving the auxiliary support frame to extend out of the guide head; The auxiliary support assembly also includes an auxiliary support drive rod for transmitting thrust, with one end of the auxiliary support drive rod fixed to the auxiliary support slide and the other end fixed to the auxiliary support frame.

[0015] Optionally, the auxiliary support assembly further includes an auxiliary reinforcing rod fixed to the auxiliary support frame; The guide head is provided with a third guide groove, and the auxiliary support frame is slidably disposed in the third guide groove. The auxiliary support frame is a bent structure or is extended after being pressed into a bent state by the third guide groove. The auxiliary support frame, the first suture assembly, and the first bracket assembly are located on the same side of the guide head.

[0016] Optionally, the auxiliary support frame has a bent structure; The guide head is provided with an exposed platform, and a guide platform is provided on the exposed platform; The auxiliary support frame is slidably connected to the exposed platform, and the guide table is located within the projection area of ​​the auxiliary support frame; The guide head is provided with a first guide groove and a second guide groove for mounting the first suture needle body and the second suture needle body. The first guide groove and the second guide groove are located on opposite sides of the guide head, and the extending directions of the first guide groove and the second guide groove pass through the first support assembly and the second support assembly in the folded state, respectively. The first guide groove is located on the first guide platform.

[0017] The beneficial effects of this invention are: This application sets up an asymmetrical first support assembly and second support assembly, and simultaneously sets an auxiliary support assembly on the guide head. The auxiliary support frame of the auxiliary support assembly is set at an obtuse angle with the axial direction of the guide head. Since the first blocking frame of the first support assembly is longer than the first support frame, the angle between the first blocking frame and the axial direction of the guide head is always at an obtuse angle when the first support assembly is in the folded state. This allows the first blocking frame and the auxiliary support frame to be aligned and clamped from both sides of the secondary septum during use. This solves the problem that when the instrument is inserted between the secondary and primary septums, the obtuse angle between the secondary septum and the instrument, as well as its own flexibility, makes it difficult to capture and clamp the secondary septum during suturing.

[0018] Meanwhile, the second blocking frame of the second support assembly is shorter than the second support frame. Therefore, during the process of the second support assembly changing from the extended state to the folded state and continuing to fold, the angle between the second blocking frame and the guide head axis can gradually decrease until the angle between the first blocking frame and the guide head axis is at or near the minimum obtuse angle. At this time, the angle between the second blocking frame and the guide head axis is acute. When the instrument of this application captures and clamps the secondary septum, the primary septum can also be supported at the same time, which can realize the insertion of the instrument in one step. At the same time, the first suture assembly and the second suture assembly penetrate the secondary septum and the primary septum respectively, avoiding the instrument from frequently passing through the channel between the primary septum and the secondary septum during the suture operation.

[0019] Furthermore, the first and second support components of this application each include a first blocking net and a second blocking net, with the first blocking net fixed within the first blocking frame of the first support component and the second blocking net fixed within the second blocking frame of the second support component. This allows the first and second suture components to pass through the first and second blocking nets respectively during suturing. This design concept of a large penetration area ensures that even if there is a certain angular deviation, the first suture needle of the first suture component can easily pass through the first and second blocking nets without adjustment after penetrating the secondary septum, and the second suture needle of the second suture component can pass through the primary septum. This greatly reduces the difficulty of operation. After the first suture passes through the first blocking net through the first anchor head and the second suture passes through the second blocking net through the second anchor head, the first and second support components switch from the folded state to the extended state. Then, the instruments are withdrawn from the secondary and primary septa, allowing the first and second sutures to be pulled out simultaneously from the channel between the secondary and primary septa for subsequent knotting operations.

[0020] Therefore, this application, through the asymmetrical design of the first and second support components, and the cooperative fixing design of the auxiliary support frame and the first support component, combined with the overall design concept of a large penetration area of ​​the first and second blocking nets, makes the fixation effect of the secondary and primary septa of this application stable, the penetration operation simple, and the secondary and primary septa can be threaded at one time after the instrument is inserted. After the instrument is withdrawn, the subsequent suture knotting operation can be performed directly. There is no redundant operation, and the operation is simple, reasonable and efficient.

[0021] In addition to achieving stable support and fixation of the secondary and primary septa, convenient operation, and the ability to complete the threading and pulling of the sutures in a single instrument insertion, this application also features a foldable design for the first and second support components. The first support frame and the first blocking frame of the first support component are rotatably connected, as are the second support frame and the second blocking frame of the second support component. This allows for flexible adjustment of the folding angles of the first and second support components to adapt to different cases. Furthermore, this application incorporates a first and a second spring to restrict the first and second support components from crossing the corner dead point. This prevents the obtuse angle between the first support component and the guide head from increasing and the acute angle between the second support component and the guide head from decreasing as the conical pusher in the support opening and closing assembly continues to retract, thus avoiding problems such as a deterioration in the support effect of the secondary septa and excessive compression of the primary septa. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the suture needle being pushed out in an embodiment of this application.

[0023] Figure 2 for Figure 1 A schematic diagram of the three-dimensional structure of the handle after removing the upper shell.

[0024] Figure 3 for Figure 1 A cross-sectional structural diagram.

[0025] Figure 4 for Figure 3 A magnified view of a portion of point A in the middle.

[0026] Figure 5 for Figure 4 A magnified view of a portion of point A1 in the diagram.

[0027] Figure 6 for Figure 4 A magnified view of a portion of point A2 in the diagram.

[0028] Figure 7 This is a partial three-dimensional structural diagram of the suture needle being pushed out during use, according to an embodiment of this application. Figure 8 This is a three-dimensional structural diagram of the embodiment of this application when both the suture needle and the mating anchor are pushed out.

[0029] Figure 9 for Figure 8 A magnified view of a portion of point B in the middle.

[0030] Figure 10 This is a partial three-dimensional structural diagram from another perspective when both the suture needle and the mating anchor in the embodiments of this application are extended.

[0031] Figure 11 This is a partial three-dimensional structural diagram of Embodiment 2 of this application.

[0032] Explanation of reference numerals in the attached figures: 1-Housing assembly, 11-Lower shell, 12-Upper shell, 13-Thread gathering block, 14-Guide rail, 15-Multi-cavity tube, 16-Adjusting wheel, 17-Tethering rod, 2-Auxiliary support assembly, 21-Auxiliary support slide key, 22-Auxiliary support slide block, 23-Auxiliary support drive rod, 24-Auxiliary support frame, 25-Auxiliary reinforcing rod, 3-Bracket opening and closing assembly, 31-Push head slide key, 32-Push head slide block, 33-Center tube, 34-Conical push head, 35-Push head connecting seat, 4-First suture assembly, 41-First suture needle slide key, 42-First anchor head slide key, 43-First suture needle slide block, 44-First anchor head slide block, 45-First winding wheel, 46-First suture needle body, 461-First thread guide groove, 47-First anchor head body, 48-First suture thread, 49-First anchor head drive 5-Second suture assembly, 51-Second suture needle slide key, 52-Second anchor head slide key, 53-Second suture needle slide seat, 54-Second anchor head slide seat, 55-Second winding wheel, 56-Second suture needle body, 561-Second thread guide groove, 57-Second anchor head body, 58-Second suture thread, 59-Second anchor head drive rod, 6-First support assembly, 61-First support frame, 62-First blocking frame, 63-First blocking net, 64-First spring piece, 7-Second support assembly, 71-Second support frame, 72-Second blocking frame, 73-Second blocking net, 74-Second spring piece, 8-Guide head, 801-First guide groove, 802-Second guide groove, 803-Third guide groove, 81-Exposed platform, 82-Guide table, 91-Secondary diaphragm, 92-Primary diaphragm. Detailed Implementation

[0033] The present invention will be further described in detail below with reference to the embodiments and accompanying drawings, but the embodiments of the present invention are not limited thereto.

[0034] like Figures 1 to 10 As shown, this embodiment provides a patent foramen ovale suture device, including a first suture assembly 4, a second suture assembly 5, a first support assembly 6, and a second support assembly 7, for guiding the first suture assembly 4 and the second suture assembly 5 to penetrate the guide head 8 of the first support assembly 6 and the second support assembly 7 respectively; It also includes a bracket opening and closing assembly 3 for driving the first bracket assembly 6 and the second bracket assembly 7 to switch between folded and extended states, and an auxiliary support assembly 2; The auxiliary support assembly 2 includes an auxiliary support frame 24 for cooperating with the first support assembly 6 to clamp the relay spacer 91. The auxiliary support frame 24 has an obtuse angle with the axial direction of the guide head 8. The first support assembly 6 includes a first support frame 61 and a first blocking frame 62 rotatably connected, and the first blocking frame 62 is longer than the first support frame 61. The second support assembly 7 includes a second support frame 71 and a second blocking frame 72 rotatably connected, and the second blocking frame 72 is shorter than the second support frame 71. The bracket opening and closing assembly 3 is movably connected to the first support frame 61 and the second support frame 71, and the guide head 8 is movably connected to the first blocking frame 62 and the second blocking frame 72.

[0035] This embodiment uses an asymmetrical first support assembly 6 and second support assembly 7, and an auxiliary support assembly 2 on the guide head 8. The auxiliary support frame 24 of the auxiliary support assembly 2 forms an obtuse angle with the axial direction of the guide head 8. Since the first blocking frame 62 of the first support assembly 6 is longer than the first support frame 61, the angle between the first blocking frame 62 and the axial direction of the guide head 8 remains obtuse even when the first support assembly 6 is folded. This allows the first blocking frame 62 and the auxiliary support frame 24 to be aligned and clamped from both sides of the secondary septum 91 during use. This solves the problem that the secondary septum 91 is difficult to capture and clamp during suturing operations because of its obtuse angle with the instrument and its inherent flexibility.

[0036] Meanwhile, the second blocking frame 72 of the second support assembly 7 is shorter than the second support frame 71. Therefore, during the process of the second support assembly 7 changing from the extended state to the folded state and continuing to fold, the angle between the second blocking frame 72 and the axial direction of the guide head 8 can gradually decrease until the angle between the first blocking frame 62 and the axial direction of the guide head 8 is at or near the minimum obtuse angle. At this time, the angle between the second blocking frame 72 and the axial direction of the guide head 8 is an acute angle. At this time, when the instrument of this application captures and clamps the secondary septum 91, the primary septum 92 can also be supported at the same time, which can realize the insertion of the instrument in one step. At the same time, the first suture assembly 4 and the second suture assembly 5 penetrate the secondary septum 91 and the primary septum 92 respectively, avoiding the instrument from frequently passing through the channel between the primary septum 92 and the secondary septum 91 during the suture operation.

[0037] In this embodiment, the first support assembly 6 further includes a first blocking net 63 disposed within the first blocking frame 62, and the second support assembly 7 further includes a second blocking net 73 disposed within the second blocking frame 72. The size of the first blocking net 63 is larger than the size of the second blocking net 73. Furthermore, in this embodiment, the first support assembly 6 and the second support assembly 7 respectively include a first blocking mesh 63 and a second blocking mesh 73. The first blocking mesh 63 is fixed within the first blocking frame 62 of the first support assembly 6, and the second blocking mesh 73 is fixed within the second blocking frame 72 of the second support assembly 7. This allows the first suture assembly 4 and the second suture assembly 5 to pass through the first blocking mesh 63 and the second blocking mesh 73 respectively during suturing. This design concept of a large penetration area ensures that even if there is a certain angular deviation, there will be no problem after the first suture needle body 46 of the first suture assembly 4 penetrates the septum 91 and the second suture needle body 56 of the second suture assembly 5 penetrates the septum 92. The instrument can be easily passed through the first blocking net 63 and the second blocking net 73 by adjusting its position, which greatly reduces the difficulty of operation. After the first suture 48 passes through the first anchor head body 47 and the first blocking net 63, and the second suture 58 passes through the second anchor head body 57 and the second blocking net 73, and as the first suture needle body 46 and the second suture needle body 56 retract into the guide head 8, the first support assembly 6 and the second support assembly 7 can switch from the folded state to the extended state. Then, the instrument can be withdrawn from the secondary septum 91 and the primary septum 92, and the first suture 48 and the second suture 58 can be pulled out from the channel between the secondary septum 91 and the primary septum 92 at the same time for subsequent knotting operations.

[0038] Therefore, this embodiment, through the asymmetrical design of the first support assembly 6 and the second support assembly 7, and the cooperative fixing design of the auxiliary support frame 24 and the first support assembly 6, combined with the overall design concept of the large penetration area of ​​the first blocking net 63 and the second blocking net 73, makes the fixation effect of the secondary hair septum 91 and the primary hair septum 92 of this embodiment stable, the penetration operation is simple, and the secondary hair septum 91 and the primary hair septum 92 can be threaded at one time after the instrument is inserted. After the instrument is withdrawn, the subsequent suture knotting operation can be directly performed. There is no redundant operation, and the operation is simple, reasonable and efficient.

[0039] The first support assembly 6 further includes a first spring piece 64 for preventing the first support frame 61 and the first blocking frame 62 from rotating past the dead point. The first spring piece 64 is disposed on the first support frame 61 or the first blocking frame 62. The second support assembly 7 further includes a second spring piece 74 for preventing the second support frame 71 and the second blocking frame 72 from rotating past the dead point. The second spring piece 74 is disposed on the second support frame 71 or the second blocking frame 72.

[0040] In this embodiment, in addition to achieving stable support and fixation of the secondary septum 91 and primary septum 92, convenient operation, and the ability to complete the threading and pulling of the secondary septum 91 and primary septum 92 with a single instrument insertion, the foldable design of the first support assembly 6 and the second support assembly 7 allows for flexible adjustment of the folding angles of the first support assembly 6 and the second support assembly 7, thus adapting to different cases. Furthermore, the first spring 64 and the second spring 74 are provided to restrict the first support assembly 6 and the second support assembly 7 from crossing the corner dead point, preventing the obtuse angle between the first support assembly 6 and the guide head 8 from increasing and the acute angle between the second support assembly 7 and the guide head 8 from decreasing as the conical pusher 34 in the support opening and closing assembly 3 continues to retract, thus avoiding problems such as a deterioration in the support effect of the secondary septum 91 and excessive compression of the primary septum 92.

[0041] In this embodiment, due to the asymmetrical and foldable design of the first support assembly 6 and the second support assembly 7, when the first support assembly 6 and the second support assembly 7 switch from the initial extended state to the folded state, the conical pusher 34 needs to move back closer to the guide head 8. During the process of the conical pusher 34 moving back, the obtuse angle between the first blocking frame 62 of the first support assembly 6 and the axial direction of the guide head 8 gradually decreases until the angle between the first support frame 61 and the axial direction of the guide head 8 becomes a right angle. After that, if the conical pusher 34 is pulled back, the obtuse angle between the first blocking frame 62 and the axial direction of the guide head 8 will gradually increase. During the process of the conical pusher 34 moving back, the angle between the second blocking frame 72 and the axial direction of the guide head 8 will gradually decrease, changing from an obtuse angle to an acute angle. Therefore, by setting the first spring 64 and the second spring 74, the folding degree of the first support assembly 6 and the second support assembly 7 can be prevented from exceeding the preset point, i.e., the aforementioned dead point, which would lead to a deterioration in the support effect of the secondary partition 91 and excessive compression of the primary partition 92.

[0042] In this embodiment, the first suture assembly 4 includes a first suture needle body 46, a first anchor head body 47 disposed within the first suture needle body 46, and a first suture thread 48 with one end connected to the first anchor head body 47. The first suture assembly 4 also includes a first anchor head drive rod 49 for driving the first anchor head body 47 to extend out of the first suture needle body 46. The first anchor head drive rod 49 can push the first anchor head body 47 out of the first suture needle body 46. The first anchor head drive rod 49 can be made of steel wire. The second suture assembly 5 includes a second suture needle body 56, a second anchor head body 57 disposed within the second suture needle body 56, and a second suture 58 with one end connected to the second anchor head body 57; The second suture assembly 5 also includes a second anchor head drive rod 59 for driving the second anchor head body 57 to extend out of the second suture needle body 56. The second anchor head drive rod 59 can push the second anchor head body 57 out of the second suture needle body 56. The second anchor head drive rod 59 can be made of steel wire. The guide head 8 is provided with a first guide groove 801 and a second guide groove 802 for mounting the first suture needle body 46 and the second suture needle body 56. The first guide groove 801 and the second guide groove 802 are located on opposite sides of the guide head 8, and the extending directions of the first guide groove 801 and the second guide groove 802 pass through the first support assembly 6 and the second support assembly 7 in the folded state, respectively. In this embodiment, the first guide groove 801 and the second guide groove 802 allow the first suture needle body 46 and the second suture needle body 56 to extend obliquely out of the guide head 8, so that the first suture needle body 46 can pass through the secondary partition 91, the first blocking frame 62, and the first blocking mesh 63, and the second suture needle body 56 can pass through the secondary partition 91, the second blocking frame 72, and the second blocking mesh 73.

[0043] In this embodiment, by setting a first anchor head body 47 and a second anchor head body 57, and the first anchor head body 47 and the second anchor head body 57 being located inside the first suture needle body 46 and the second suture needle body 56 respectively, after the first suture needle body 46 and the second suture needle body 56 pass through the first blocking net 63 and the second blocking net 73 respectively, the first anchor head body 47 can be pushed out from the first suture needle body 46, and the second anchor head body 57 can be pushed out from the second suture needle body 56, so that the first anchor head body 47 and the second anchor head body 57 are blocked by the first blocking net 63 and the second blocking net 73 respectively, so that after the first suture needle body 46 and the second suture needle body 56 are withdrawn, the first suture 48 and the second suture 58 still remain in the state of passing through the secondary septum 91 and the primary septum 92.

[0044] In this embodiment, the first suture needle body 46 is provided with a first thread groove 461, and the second suture needle body 56 is provided with a second thread groove 561. By providing the first thread groove 461 and the second thread groove 561, the first suture 48 and the second suture 58 can bypass the ends of the first anchor head drive rod 49 and the second anchor head drive rod 59 respectively, and then be fixedly connected to the first anchor head body 47 and the second anchor head body 57 respectively. Both the first anchor head body 47 and the second anchor head body 57 are columnar structures. The first suture 48 is fixedly connected to the first anchor head body 47 through the first thread groove 461, and the second suture 58 is fixedly connected to the second anchor head body 57 through the second thread groove 561. A portion of the first anchor drive rod 49 is located inside the first suture needle body 46, and a portion of the second anchor drive rod 59 is located inside the second suture needle body 56.

[0045] In this embodiment, the first suture assembly 4 includes a first winding wheel 45 and the second suture assembly 5 includes a second winding wheel 55; When the first sewing assembly 4 includes a first winding wheel 45 and the second sewing assembly 5 includes a second winding wheel 55, the first suture thread 48 and the second suture thread 58 are respectively wound on the first winding wheel 45 and the second winding wheel 55. Based on the simultaneous setting of the first winding wheel 45 and the second winding wheel 55, in this embodiment, when suturing, after the first suture 48 and the second suture 58 pass through the secondary septum 91 and the primary septum 92 respectively, the instrument turns to the extended state and pulls back, so that the first suture 48 and the second suture 58 can be pulled back from the channel between the secondary septum 91 and the primary septum 92, forming two U-shaped sutures that pass through the secondary septum 91 and the primary septum 92 respectively, and then knotted.

[0046] In some embodiments, only one winding wheel can be provided, that is, only the first sewing assembly 4 includes the first winding wheel 45 or the second sewing assembly 5 includes the second winding wheel 55. The ends of the first suture 48 and the second suture 58 away from the guide head 8 are fixedly connected and wound on the first winding wheel 45 or the second winding wheel 55. This allows the first suture 48 and the second suture 58 to pass through the channels of the secondary hairline 91 and the primary hairline 92, and then the ends of the first suture 48 and the second suture 58 away from the first anchor head body 47 and the second anchor head body 57 are directly pulled to the vicinity of the secondary hairline 91 and the primary hairline 92, and then the first suture 48 and the second suture 58 are knotted.

[0047] In this embodiment, a housing assembly 1 is also included. The housing assembly 1 includes a detachable and fixed upper shell 12 and a lower shell 11. A guide rail 14 is provided at the bottom of the lower shell 11, and a wire gathering block 13 is also provided. The first suture assembly 4 includes a first suture needle slide key 41 and a first anchor head slide key 42 protruding from the upper shell 12 of the housing assembly 1, and a first suture needle slide seat 43 and a first anchor head slide seat 44 disposed within the housing assembly 1. The first suture needle slide key 41 is disposed on the first suture needle slide seat 43, the first anchor head slide key 42 is disposed on the first anchor head slide seat 44, the first anchor head slide seat 44 is slidably connected to the first suture needle slide seat 43, and the first suture needle slide seat 43 is slidably connected to the guide rail 14 of the housing assembly 1. The first suture assembly 4 also includes a first suture needle drive tube, and the first suture needle body 46 is fixedly connected to the first suture needle slide 43 through the first suture needle drive tube; The second suture assembly 5 includes a second suture needle slide key 51 and a second anchor head slide key 52 protruding from the upper shell 12 of the housing assembly 1, and a second suture needle slide seat 53 and a second anchor head slide seat 54 disposed within the housing assembly 1. The second suture needle slide key 51 is disposed on the second suture needle slide seat 53, the second anchor head slide key 52 is disposed on the second anchor head slide seat 54, the second anchor head slide seat 54 is slidably connected to the second suture needle slide seat 53, and the second suture needle slide seat 53 is slidably connected to the guide rail 14 of the housing assembly 1. The second suture assembly 5 also includes a second suture needle drive tube, and the second suture needle body 56 is fixedly connected to the second suture needle slide 53 through the second suture needle drive tube.

[0048] In this embodiment, the first anchor head slide 44 is slidably connected to the first suture needle slide 43, and the second anchor head slide 54 is slidably connected to the second suture needle slide 53, so that when the first suture needle body 46 and the second suture needle body 56 extend out of the guide head 8, the first anchor head body 47 and the second anchor head body 57 can extend out synchronously. Before the first suture needle body 46 and the second suture needle body 56 retract, the first anchor head body 47 and the second anchor head body 57 can extend out of the first suture needle body 46 and the second suture needle body 56 respectively through the first anchor head slide 44 and the second anchor head slide 54.

[0049] In this embodiment, the housing assembly 1 also includes a multi-cavity tube 15. One end of the multi-cavity tube 15 is fixedly connected to the guide head 8, and the other end is fixedly connected to the upper shell 12 and the lower shell 11. The suture block 13 is disposed close to the multi-cavity tube 15. The first suture needle drive tube and the second suture needle drive tube both pass through the suture block 13 and then extend into the multi-cavity tube 15.

[0050] In this embodiment, the first suture 48 and the first anchor head drive rod 49 are both disposed inside the first suture needle drive tube, and the second suture 58 and the second anchor head drive rod 59 are both disposed inside the second suture needle drive tube. Both the first suture needle drive tube and the second suture needle drive tube are made of steel pipe.

[0051] In this embodiment, the housing assembly 1 also includes a pull rod 17 for adjusting the curvature of the multi-cavity tube 15. The pull rod 17 passes through the multi-cavity tube 15 via a conduit and is connected and fixed to the guide head 8. The pull rod 17 is located on one side of the multi-cavity tube 15. The traction rod is wound around the bending wheel 16. By rotating the bending wheel 16, the guide head 8 can be pulled closer to the bending wheel 16, thereby adjusting the curvature of the multi-cavity tube 15.

[0052] In this embodiment, the bracket opening and closing assembly 3 includes a conical pusher 34, a pusher connecting seat 35 and a central tube 33 that are coaxially fixedly connected, as well as a pusher slide 32 and a pusher slide key 31 for driving the central tube 33 to move along its axial direction. The pusher slide 32 and the pusher slide key 31 are fixedly connected, and the end of the central tube 33 away from the pusher connecting seat 35 is fixedly connected to the pusher slide 32. The first support frame 61 and the second support frame 71 are both rotatably connected to the push head connecting seat 35.

[0053] In this embodiment, the tapered pusher 34 is made of non-metallic material, and its tapered structure facilitates its insertion between the secondary hairline 91 and the primary hairline 92.

[0054] In this embodiment, the central tube 33 is located at the center of the multi-cavity tube 15. The central tube 33 is slidably connected to the guide head 8. The conical pusher 34 can be pulled closer to or away from the guide head 8 through the central tube 33, thereby causing the pusher connecting seat 35 fixed on the conical pusher 34 to move closer to or away from the guide head 8. This allows the first support assembly 6 and the second support assembly 7 to switch between an extended state and a folded state, and enables the first support assembly 6 and the second support assembly 7 to achieve multiple degrees of folding.

[0055] In this embodiment, the auxiliary support frame 24 has a strip-shaped clearance channel in the middle for avoiding the first stitching assembly 4; The auxiliary support assembly 2 also includes an auxiliary reinforcing rod 25 for increasing the strength of the auxiliary support frame 24, and an auxiliary support slide key 21 and an auxiliary support slide block 22 for driving the auxiliary support frame 24 to extend out of the guide head 8; The auxiliary support assembly 2 also includes an auxiliary support drive rod 23 for transmitting thrust. One end of the auxiliary support drive rod 23 is fixed to the auxiliary support slide 22, and the other end is fixed to the auxiliary support frame 24.

[0056] In this embodiment, the auxiliary support frame 24 has an inverted U-shaped structure with two auxiliary reinforcing rods 25 on both sides, which can improve the structural strength of the auxiliary support frame 24 and ensure that the auxiliary support frame 24 forms an effective rigid support for the secondary partition 91. The inverted U-shaped structure of the auxiliary support frame 24 also has a strip-shaped clearance structure in its middle, which allows the first suture needle body 46 to pass through the strip-shaped clearance channel and then penetrate the secondary partition 91 and the first blocking net 63.

[0057] In this embodiment, the guide head 8 is provided with a third guide groove 803, and the auxiliary support frame 24 is slidably disposed in the third guide groove 803. The auxiliary support frame 24 is a bent structure. In some embodiments, the auxiliary support frame 24 can also be bent through the third guide groove 803 and then extend out. As long as the angle between the extended part of the auxiliary support frame 24 and the axial direction of the guide head 8 is an obtuse angle, it can cooperate with the first blocking frame 62 to achieve clamping and fixing of the secondary partition 91. The auxiliary support frame 24, the first suture assembly 4, and the first bracket assembly 6 are located on the same side of the guide head 8.

[0058] Example 2: like Figure 11 As shown, in this embodiment, the auxiliary support assembly 2 further includes an auxiliary reinforcing rod 25 fixed to the auxiliary support frame 24; The auxiliary support frame 24 has a bent structure and is made of shape memory alloy, which ensures that after the auxiliary support frame 24 extends from the guide head 8, the auxiliary support frame 24 can return to the bent structure state. The guide head 8 is provided with an exposed platform 81, and the exposed platform 81 is provided with a guide table 82; The auxiliary support frame 24 is slidably connected to the exposed platform 81, and the guide table 82 is located within the projection area of ​​the auxiliary support frame 24; The guide head 8 is provided with a first guide groove 801 and a second guide groove 802 for mounting the first suture needle body 46 and the second suture needle body 56. The first guide groove 801 and the second guide groove 802 are located on opposite sides of the guide head 8, and the extending directions of the first guide groove 801 and the second guide groove 802 pass through the first support assembly 6 and the second support assembly 7 in the folded state, respectively. The first guide groove 801 is located on the first guide platform 82 and is used to guide the first suture needle body 46 of the first suture assembly 4 to extend obliquely out of the first guide platform 82.

[0059] The remaining structures in this embodiment are the same as those in Embodiment 1, and will not be described again here.

[0060] It is understood that the above embodiments are merely exemplary embodiments used to illustrate the principles of the present invention, and the present invention is not limited thereto. For those skilled in the art, various modifications and improvements can be made without departing from the spirit and essence of the present invention, and these modifications and improvements are also considered to be within the scope of protection of the present invention.

Claims

1. A patent foramen ovale suture device, characterized in that, It includes a first suture assembly (4), a second suture assembly (5), a first support assembly (6), a second support assembly (7), and a guide head (8). The guide head (8) is used to guide the first suture assembly (4) through the first support assembly (6), and the guide head (8) is used to guide the second suture assembly (5) through the second support assembly (7). It also includes a support opening and closing assembly (3) for driving the first support assembly (6) and the second support assembly (7) to switch between folded and extended states, and an auxiliary support assembly (2); The auxiliary support assembly (2) includes an auxiliary support frame (24) for cooperating with the first support assembly (6) to clamp the secondary partition (91), and the angle between the auxiliary support frame (24) and the axial direction of the guide head (8) is an obtuse angle. The first support assembly (6) includes a first support frame (61) and a first blocking frame (62) rotatably connected, and the first blocking frame (62) is longer than the first support frame (61). The second support assembly (7) includes a second support frame (71) and a second blocking frame (72) rotatably connected, and the second blocking frame (72) is shorter than the second support frame (71). The bracket opening and closing assembly (3) is movably connected to the first support frame (61) and the second support frame (71), and the guide head (8) is movably connected to the first blocking frame (62) and the second blocking frame (72); The first support assembly (6) further includes a first blocking mesh (63) disposed within the first blocking frame (62), and the second support assembly (7) further includes a second blocking mesh (73) disposed within the second blocking frame (72). The size of the first blocking mesh (63) is larger than the size of the second blocking mesh (73). The first support assembly (6) further includes a first spring piece (64) for preventing the first support frame (61) and the first blocking frame (62) from rotating past the dead point. The first spring piece (64) is disposed on the first support frame (61) or the first blocking frame (62). The second support assembly (7) further includes a second spring (74) for preventing the second support frame (71) and the second blocking frame (72) from rotating past the dead point. The second spring (74) is disposed on the second support frame (71) or the second blocking frame (72).

2. The patent foramen ovale suture device according to claim 1, characterized in that, The first suture assembly (4) includes a first suture needle body (46), a first anchor head body (47) disposed within the first suture needle body (46), and a first suture thread (48) with one end connected to the first anchor head body (47). The first suture assembly (4) also includes a first anchor head drive rod (49) for driving the first anchor head body (47) to extend from the first suture needle body (46). The second suture assembly (5) includes a second suture needle body (56), a second anchor head body (57) disposed within the second suture needle body (56), and a second suture thread (58) with one end connected to the second anchor head body (57). The second suture assembly (5) also includes a second anchor head drive rod (59) for driving the second anchor head body (57) to extend from the second suture needle body (56); The guide head (8) is provided with a first guide groove (801) and a second guide groove (802) for mounting the first suture needle body (46) and the second suture needle body (56). The first guide groove (801) and the second guide groove (802) are located on opposite sides of the guide head (8). The extension direction of the first guide groove (801) passes through the first support assembly (6) in the folded state, and the extension direction of the second guide groove (802) passes through the second support assembly (7) in the folded state.

3. The patent foramen ovale suture device according to claim 2, characterized in that, The first suture needle body (46) is provided with a first thread groove (461), and the second suture needle body (56) is provided with a second thread groove (561). The first anchor head body (47) and the second anchor head body (57) are both columnar structures. The first suture line (48) is fixedly connected to the first anchor head body (47) through the first thread groove (461), and the second suture line (58) is fixedly connected to the second anchor head body (57) through the second thread groove (561). A portion of the first anchor drive rod (49) is located inside the first suture needle body (46), and a portion of the second anchor drive rod (59) is located inside the second suture needle body (56).

4. The patent foramen ovale suture device according to claim 2, characterized in that, The first suture assembly (4) includes a first winding wheel (45) or / and the second suture assembly (5) includes a second winding wheel (55); When the first sewing assembly (4) includes a first winding wheel (45) and the second sewing assembly (5) includes a second winding wheel (55), the first suture thread (48) is wound on the first winding wheel (45) and the second suture thread (58) is wound on the second winding wheel (55); In the case where only the first sewing assembly (4) includes a first winding wheel (45) or the second sewing assembly (5) includes a second winding wheel (55), the ends of the first suture thread (48) and the second suture thread (58) away from the guide head (8) are fixedly connected and wound on the first winding wheel (45) or the second winding wheel (55).

5. A patent foramen ovale suture device according to claim 2, characterized in that, It also includes the housing assembly (1); The first suture assembly (4) includes a first suture needle slide key (41) and a first anchor head slide key (42) protruding from the housing assembly (1), and a first suture needle slide seat (43) and a first anchor head slide seat (44) disposed within the housing assembly (1). The first suture needle slide key (41) is disposed on the first suture needle slide seat (43), the first anchor head slide key (42) is disposed on the first anchor head slide seat (44), the first anchor head slide seat (44) is slidably connected to the first suture needle slide seat (43), and the first suture needle slide seat (43) is slidably connected to the housing assembly (1). The first suture assembly (4) also includes a first suture needle drive tube, and the first suture needle body (46) is fixedly connected to the first suture needle slide (43) through the first suture needle drive tube; The second suture assembly (5) includes a second suture needle slide key (51) and a second anchor head slide key (52) protruding from the housing assembly (1), and a second suture needle slide seat (53) and a second anchor head slide seat (54) disposed within the housing assembly (1). The second suture needle slide key (51) is disposed on the second suture needle slide seat (53), the second anchor head slide key (52) is disposed on the second anchor head slide seat (54), the second anchor head slide seat (54) is slidably connected to the second suture needle slide seat (53), and the second suture needle slide seat (53) is slidably connected to the housing assembly (1). The second suture assembly (5) also includes a second suture needle drive tube, and the second suture needle body (56) is fixedly connected to the second suture needle slide (53) through the second suture needle drive tube.

6. The patent foramen ovale suture device according to claim 1, characterized in that, The bracket opening and closing assembly (3) includes a conical pusher (34), a pusher connecting seat (35) and a central tube (33) that are coaxially fixedly connected, as well as a pusher slide (32) and a pusher key (31) for driving the central tube (33) to move along its axial direction. The pusher slide (32) and the pusher key (31) are fixedly connected, and one end of the central tube (33) away from the pusher connecting seat (35) is fixedly connected to the pusher slide (32). The first support frame (61) and the second support frame (71) are both rotatably connected to the push head connecting seat (35).

7. The patent foramen ovale suture device according to claim 1, characterized in that, The auxiliary support frame (24) has a strip-shaped clearance channel in the middle for avoiding the first suture assembly (4); The auxiliary support assembly (2) also includes an auxiliary reinforcing rod (25) for increasing the strength of the auxiliary support frame (24), and an auxiliary support slide key (21) and an auxiliary support slide block (22) for driving the auxiliary support frame (24) to extend out of the guide head (8). The auxiliary support assembly (2) also includes an auxiliary support drive rod (23) for transmitting thrust. One end of the auxiliary support drive rod (23) is fixed to the auxiliary support slide (22), and the other end is fixed to the auxiliary support frame (24).

8. A patent foramen ovale suture device according to claim 1, characterized in that, The auxiliary support assembly (2) also includes an auxiliary reinforcing rod (25) fixed to the auxiliary support frame (24); The guide head (8) is provided with a third guide groove (803), and the auxiliary support frame (24) is slidably disposed in the third guide groove (803). The auxiliary support frame (24) is a bent structure or is extended after being pressed into a bent state by the third guide groove (803). The auxiliary support frame (24), the first suture assembly (4) and the first bracket assembly (6) are located on the same side of the guide head (8).

9. A patent foramen ovale suture device according to claim 8, characterized in that, The auxiliary support frame (24) has a bent structure; The guide head (8) is provided with an exposed platform (81), and the exposed platform (81) is provided with a guide table (82). The auxiliary support frame (24) is slidably connected to the exposed platform (81), and the guide table (82) is located in the projection area of ​​the auxiliary support frame (24); The guide head (8) is provided with a first guide groove (801) and a second guide groove (802) for mounting the first suture needle body (46) and the second suture needle body (56). The first guide groove (801) and the second guide groove (802) are located on opposite sides of the guide head (8). The extension direction of the first guide groove (801) passes through the first support assembly (6) in the folded state, and the extension direction of the second guide groove (802) passes through the second support assembly (7) in the folded state. The first guide groove (801) is located on the first guide platform (82).

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