An unsealed patent foramen ovale closure mechanism and suture device

Abstract

The application discloses a patent foramen ovale suture mechanism and a suture device, relates to the technical field of medical devices, and can solve the problem that the suture device in the prior art is complex in structure and cannot be used for fixing the secondary septum and the primary septum through threading multiple times. The patent foramen ovale suture mechanism comprises a first suture assembly and a second suture assembly, a guide cylinder seat and a support plate which is reversibly connected to the guide cylinder seat. The guide cylinder seat is provided with a first guide hole and a second guide hole, and the first guide hole and the second guide hole are distributed on the two sides of the support plate along the axial direction of the guide cylinder seat. The support plate is provided with a first needle penetrating hole and a second needle penetrating hole. The first suture assembly and the second suture assembly are arranged in the first guide hole and the second guide hole respectively, and after the support plate is reversed: the first suture assembly can extend out of the first guide hole and penetrate through the first needle penetrating hole, and the second suture assembly can extend out of the second guide hole and penetrate through the second needle penetrating hole.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, specifically to a patent foramen ovale suturing mechanism and 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 insertion. This results in a cumbersome and inefficient procedure, and the multiple accesses may cause secondary damage to the patient.

[0004] To address the aforementioned issues, existing improved techniques integrate two suture needles and two supports into a single suture device, enabling simultaneous suturing of the secondary and primary septa. However, the structure of this suture device remains relatively complex. Furthermore, existing suture devices typically only allow for one suture pass between the secondary and primary septa, leading to unstable suturing.

[0005] Against this background, the inventors designed a suture mechanism and suturer for patent foramen ovale, which can solve at least one of the above problems, and thus, this application is filed. Summary of the Invention

[0006] The purpose of this application is to provide a suture mechanism and suture device for patent foramen ovale, which solves the problem that the existing suture device has a complex structure and cannot be used to fix the secondary and primary septa multiple times.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following solution: On the one hand, this application provides a patent foramen ovale suturing mechanism, including a first suturing assembly and a second suturing assembly for suturing the secundum and the primordial septum respectively, as well as a guide tube seat and a support plate flipped and connected to the guide tube seat; The guide cylinder seat is provided with a first guide hole and a second guide hole, which are distributed along the axial direction of the guide cylinder seat on both sides of the support plate. The support plate is provided with a first needle hole and a second needle hole; The first suture assembly and the second suture assembly are respectively disposed in the first guide hole and the second guide hole, in the state after the support plate is flipped: The first suture assembly can extend outward through the first guide hole and penetrate the first needle hole, and the second suture assembly can extend outward through the second guide hole and penetrate the second needle hole.

[0008] Optionally, the first guide hole and the second guide hole are both inclined and in opposite directions, and the first needle hole and the second needle hole are both inclined and in opposite directions. When the support plate is in the flipped state: the first guide hole and the first needle hole are coaxial, and the second guide hole and the second needle hole are coaxial.

[0009] Optionally, the first suture assembly includes a first suture needle body and a first anchor head body fitted on the first suture needle body, as well as a first suture thread connected to the first anchor head body. The end of the first suture thread is provided with a first anti-dislodgement end. After passing through the first suture needle body, the first suture thread is secured to the first anchor head body by its first anti-dislodgement end. The first needle hole is provided with a first anchor head holder for matching with the first anchor head body to prevent it from falling off; The second suture assembly includes a second suture needle body and a second anchor head body fitted on the second suture needle body, and a second suture connected to the second anchor head body. The end of the second suture is provided with a second anti-detachment end. The second anti-detachment end of the second suture passes through the second anchor head body and is locked between the second anchor head body and the second suture needle body. The second needle hole is provided with a second anchor head holder for matching with the second anchor head body to prevent it from falling off.

[0010] Optionally, the first anchor head body is provided with a first deformation joint parallel to its axis and a first mounting groove that cooperates with the first anchor head seat to prevent it from falling off, and the end of the first anchor head body is a first conical end; The first expansion joint is set through the main body of the first anchor head; The second anchor head body is provided with a second deformation joint parallel to its axis, and a second mounting groove that cooperates with the second anchor head seat to prevent it from falling off. The end of the second anchor head body is a second conical end. The second expansion joint extends through the main body of the second anchor head.

[0011] Optionally, the first suture assembly includes a first suture needle body, a first reusable anchor assembly fitted on the first suture needle body, and a first suture thread connected to the first reusable anchor assembly; The first needle hole is provided with a first reuse anchor head locking block for elastically pressing against the first reuse anchor head assembly; The first reusable anchor head assembly is used to be engaged on the first reusable anchor head block or the first suture needle body according to the feed depth of the first suture needle body; The second suture assembly includes a second suture needle body, a second reusable anchor assembly fitted onto the second suture needle body, and a second suture thread connected to the second reusable anchor assembly; The second needle hole is provided with a second reuse anchor head locking block for elastically pressing against the second reuse anchor head assembly; The second reusable anchor assembly is used to engage with the second reusable anchor block or the second suture needle body according to the feed depth of the second suture needle body.

[0012] Optionally, the first suture needle body includes a first suture needle tip, and the first suture needle tip is provided with a first needle tip annulus. The first reusable anchor assembly includes a first reusable anchor body fitted onto a first suture needle, a first sliding ring, and a first tension spring; The first reused anchor head body is provided with a first anchor head annular groove, and a first sliding ring is slidably disposed in the first anchor head annular groove. One end of the first tension spring is connected to the end face of the first anchor head annular groove, and the other end is connected to the first sliding ring. The first reused anchor head body is also provided with a first anchor head annular protrusion. The projections of the first anchor head annular protrusion and the first needle annular protrusion along the axial direction of the first suture needle have overlapping areas. The end of the first reuse anchor head block near the first reuse anchor head is the first block end, and the side of the first block end near the first sliding ring is the first end curved surface, and the side of the first block end near the end face of the first anchor head ring groove is the first end straight surface. The side of the first sliding ring closest to the first tension spring is the first disengagement ramp; The second suture needle body includes a second suture needle tip, and a second needle tip annulus is provided on the second suture needle tip; The second reused anchor assembly includes a second reused anchor body fitted onto a second suture needle, a second sliding ring, and a second tension spring; The second reused anchor head body is provided with a second anchor head annular groove, and a second sliding ring is slidably disposed in the second anchor head annular groove. One end of the second tension spring is connected to the end face of the second anchor head annular groove, and the other end is connected to the second sliding ring. The second reused anchor head body is also provided with a second anchor head annular protrusion. The projections of the second anchor head annular protrusion and the second needle annular protrusion along the axial direction of the second suture needle have overlapping areas. The end of the second reuse anchor head block near the second reuse anchor head is the second block end, and the side of the second block end near the second sliding ring is the second end curved surface, while the side of the second block end near the end face of the second anchor head ring groove is the second end straight surface. The side of the second sliding ring closest to the second tension spring is the second release slope.

[0013] Optionally, the support plate is provided with a first locking block mounting hole and a second locking block mounting hole, as well as a first reset spring and a second reset spring; The first and second card mounting holes are respectively connected to the first and second needle holes. The first reused anchor head block and the first reset spring are both disposed in the first block mounting hole. The first end of the first reused anchor head block can extend into the first needle hole through the first reset spring. The second reused anchor head block and the second reset spring are disposed in the second block mounting hole. The second end of the second reused anchor head block can extend into the second needle hole through the second reset spring.

[0014] Optionally, it also includes a multi-cavity tube and a guide tube assembly fixed on both sides of the guide tube seat, wherein the guide tube seat, the multi-cavity tube and the guide tube assembly are coaxially arranged; The guide tube assembly includes an outer guide tube and an inner guide tube arranged coaxially, with an annular channel between the outer guide tube and the inner guide tube; The first suture assembly includes a first suture needle body, a drive rod connecting seat that is fitted on the inner guide tube and can slide freely in the annular channel, and a first drive rod fixed on the drive rod connecting seat; The main body of the first suture needle is fixed to the drive rod connector.

[0015] Optionally, the guide cylinder seat is provided with a mounting groove for mounting a support plate, and the support plate is flipped and connected to the mounting groove via a rotating shaft; The support plate includes a first needle-threading surface adapted to the shape of the bottom of the mounting groove, and a second needle-threading surface adapted to the shape of the outer periphery of the guide tube seat; The guide tube base is also provided with a limiting ramp for the maximum rotation angle of the support plate; The support plate is also provided with drive rod mounting holes and limit blocks for pressing against the limit ramp.

[0016] On the other hand, this application provides a patent foramen ovale suture device, including any of the patent foramen ovale suture mechanisms described above.

[0017] The beneficial effects of this invention are: I. This application, by setting a guide tube seat and a support plate flipped and connected to the guide tube seat, provides a first guide hole and a second guide hole with opposite inclination directions on the guide tube seat, and the support plate also provides a first needle hole and a second needle hole with opposite inclination directions. The first suturing component and the second suturing component in this application are respectively set in the first guide hole and the second guide hole, so that when this application is used, the first suturing component and the second suturing component can penetrate the first needle hole and the second needle hole respectively, thereby realizing the needle threading operation of the secondary septum and the primary septum. Compared with the existing suture device, this application can not only realize the needle threading operation of the secondary septum and the primary septum with a single instrument, but also realize the above operation through the same support plate for both the first suturing component and the second suturing component, effectively simplifying the structural complexity of the existing suture device.

[0018] II. This application provides a first reusable anchor head holder and a second reusable anchor head holder in the first needle hole and the second needle hole, respectively. Furthermore, the first anchor head body that penetrates the secondary septum in the first suture assembly is replaced with a first reusable anchor head assembly, and the second anchor head body that penetrates the secondary septum in the second suture assembly is replaced with a second reusable anchor head assembly. After removing the first anchor head holder in the first needle hole and the second anchor head holder in the second needle hole, the first suture needle body and the first reusable anchor head assembly can be positioned according to the feed depth to allow the first reusable anchor head assembly to remain in place. Similarly, the second reusable anchor assembly can remain in the second needle hole or exit the second needle hole as the second suture needle body exits the first needle hole, depending on the feed depth of the second suture needle body. This selective stopping or following movement of the first and second reusable anchor assemblies allows for multiple selective suture fixation of the secondary and primary septa during use, rather than just one suture, effectively improving the suture fixation effect of the secondary and primary septa. Attached Figure Description

[0019] Figure 1 This is a partial three-dimensional structural diagram of Embodiment 1 of this application in its initial state.

[0020] Figure 2 This is a partial three-dimensional structural diagram of Embodiment 1 of this application in the first operating state.

[0021] Figure 3 This is a cross-sectional structural diagram of Embodiment 1 of this application in the first operating state.

[0022] Figure 4 for Figure 3 A magnified schematic diagram of the structure at point A1.

[0023] Figure 5 for Figure 3 A magnified schematic diagram of the structure at point A2 in the middle.

[0024] Figure 6 This is a partial three-dimensional structural diagram of Embodiment 1 of this application in the second operating state.

[0025] Figure 7 This is a partial three-dimensional structural diagram of Embodiment 1 of this application in the third operating state.

[0026] Figure 8 This is a partial three-dimensional structural diagram of Embodiment 1 of this application in the fourth operating state.

[0027] Figure 9 This is a partial three-dimensional structural diagram of the first suture assembly in Embodiment 1 of this application.

[0028] Figure 10 This is a three-dimensional structural diagram of the support plate in Embodiment 1 of this application.

[0029] Figure 11 This is a schematic diagram of the suturing process in Embodiment 1 of this application.

[0030] Figure 12 This is a partial cross-sectional view of Embodiment 2 of this application in the first operating state.

[0031] Figure 13 This is a partial cross-sectional view of Embodiment 2 of this application in the second operating state.

[0032] Figure 14 for Figure 13 A schematic diagram of the local structure at point B1.

[0033] Figure 15 This is a partial cross-sectional view of Embodiment 2 of this application in the third operating state.

[0034] Figure 16 This is a partial cross-sectional view of Embodiment 2 of this application in the fourth operating state.

[0035] Figure 17 This is a partial cross-sectional view of Embodiment 2 of this application in the fifth operating state.

[0036] Figure 18 This is a schematic diagram of the effect after suturing in Embodiment 2 of this application.

[0037] Explanation of reference numerals in the attached drawings: 1-Guide tube seat, 10-Mounting groove, 101-Limiting ramp, 11-First guide hole, 12-Second guide hole, 2-Support plate, 201-First needle insertion surface, 202-Second needle insertion surface, 21-First needle insertion hole, 211-First anchor head holder, 22-Second needle insertion hole, 221-Second anchor head holder, 23-Limiting block, 24-Drive rod mounting hole, 25-Second return spring, 26-Second locking block mounting hole, 27-Second reusable anchor head locking block, 271-Second locking block end, 2711-Second end straight surface, 2712-Second end curved surface, 3-Multi-cavity tube, 4-Guide tube assembly, 41-Outer guide tube, 42-Inner guide tube, 5-Conical pusher, 6-First Suture assembly, 61-First suture needle body, 62-First anchor head body, 63-First suture thread, 64-Drive rod connecting seat, 65-First drive rod, 7-Second suture assembly, 71-Second suture needle body, 711-Second suture needle tip, 7111-Second needle tip annulus, 72-Second anchor head body, 721-Second expansion joint, 722-Second mounting slot, 723-Second tapered end, 73-Second suture thread, 74-Second reusable anchor head assembly, 741-Second reusable anchor head body, 7411-Second anchor head annulus groove, 7412-Second anchor head annulus, 742-Second sliding ring, 7421-Second release ramp, 743-Second tension spring, 81-Secondary spacer, 82-Primary spacer. Detailed Implementation

[0038] 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.

[0039] like Figures 1 to 11 As shown, this embodiment provides a patent foramen ovale suturing mechanism, including a first suturing assembly 6 and a second suturing assembly 7 for suturing the secondary septum 81 and the primary septum 82 respectively, as well as a guide tube seat 1 and a support plate 2 flipped and connected to the guide tube seat 1; The guide cylinder seat 1 is provided with a first guide hole 11 and a second guide hole 12, which are distributed along the axial direction of the guide cylinder seat 1 on both sides of the support plate 2. The support plate 2 is provided with a first needle hole 21 and a second needle hole 22; The first suture assembly 6 and the second suture assembly 7 are respectively disposed in the first guide hole 11 and the second guide hole 12, in the state after the support plate 2 is flipped: The first suture assembly 6 can extend outward through the first guide hole 11 and penetrate the first needle hole 21, and the second suture assembly 7 can extend outward through the second guide hole 12 and penetrate the second needle hole 22.

[0040] This embodiment features a guide tube base 1 and a support plate 2 connected to the guide tube base 1 by flipping. The guide tube base 1 has a first guide hole 11 and a second guide hole 12 with opposite inclination directions. Similarly, the support plate 2 has a first needle hole 21 and a second needle hole 22 with opposite inclination directions. In this embodiment, the first suturing component 6 and the second suturing component 7 are respectively disposed in the first guide hole 11 and the second guide hole 12. This allows the first suturing component 6 and the second suturing component 7 to penetrate the first needle hole 21 and the second needle hole 22 respectively during use, thereby realizing the needle threading operation of the secondary septum 81 and the primary septum 82. Compared with existing suture devices, this embodiment can not only realize the needle threading operation of the secondary septum 81 and the primary septum 82 with a single instrument, but also achieve the above operation through the same support plate 2, effectively simplifying the structural complexity of existing suture devices.

[0041] like Figure 11 As shown, in this embodiment, during suturing, after flipping the support plate 2, the first suturing component 6 can be used to penetrate the secondary septum 81, and the first suture 63 can be kept in the state of penetrating the secondary septum 81. Then, after retraction, the support plate 2 is closed, and the entire suture device passes through the channel of the secondary septum 81 and the primary septum 82. After rotating 180°, the support plate 2 is flipped again. Then, the second suturing component 7 exits and penetrates the primary septum 82. After the support plate 2 is closed again, the entire suture device exits the secondary septum 81 and the primary septum 82. The first suture 63 and the second suture 73 are pulled out and knotted to complete the suturing.

[0042] In this embodiment, the first guide hole 11 and the second guide hole 12 are both inclined and in opposite directions, and the first needle hole 21 and the second needle hole 22 are both inclined and in opposite directions. When the support plate 2 is in the flipped state: the first guide hole 11 and the first needle hole 21 are coaxial, and the second guide hole 12 and the second needle hole 22 are coaxial, so that after the first suture needle body 61 of the first suture assembly 6 is out, it can be directly guided into the first needle hole 21 through the guide hole. Similarly, after the first suture needle body 61 of the first suture assembly 6 is out, it can be guided into the second needle hole 22.

[0043] In this embodiment, the first suture assembly 6 includes a first suture needle body 61 and a first anchor head body 62 fitted on the first suture needle body 61, and a first suture 63 connected to the first anchor head body 62. The end of the first suture 63 is provided with a first anti-detachment end. After passing through the first suture needle body 61, the first suture 63 is locked onto the first anchor head body 62 by its first anti-detachment end. The first needle hole 21 is provided with a first anchor head holder 211 for matching with the first anchor head body 62 to prevent it from falling off; The second suture assembly 7 includes a second suture needle body 71 and a second anchor head body 72 fitted on the second suture needle body 71, and a second suture 73 connected to the second anchor head body 72. The end of the second suture 73 is provided with a second anti-detachment end. The second anti-detachment end of the second suture 73 passes through the second anchor head body 72 and is locked between the second anchor head body 72 and the second suture needle body 71. The second needle hole 22 is provided with a second anchor head holder 221 for matching with the second anchor head body 72 to prevent it from falling off.

[0044] In this embodiment, by providing a first anchor head holder 211 in the first needle hole 21 and a second anchor head holder 221 in the second needle hole 22, the first anchor head body 62 can be locked after passing through the first anchor head holder 211 in the first needle hole 21, and will not exit the first needle hole 21 as the first suture needle body 61 returns. This allows the first suture 63 to remain in the state of penetrating the secondary septum 81. The technical effect of the second anchor head holder 221 provided in the second needle hole 22 is the same as that of the first anchor head holder 211, and will not be described in detail here.

[0045] In this embodiment, the first anchor head holder 211 and the second anchor head holder 221 are respectively disposed in the first needle hole 21 and the second needle hole 22, so that after the first anchor head body 62 passes through, the first anchor head holder 211 can lock the first anchor head body 62 in the first needle hole 21. Similarly, after the second anchor head body 72 passes through the second anchor head holder 221, the second anchor head holder 221 can also lock the second anchor head body 72 to prevent the second anchor head body 72 from dislodging from the second needle hole 22.

[0046] In this embodiment, the first anchor head body 62 is provided with a first deformation joint parallel to its axial direction, and a first mounting groove that cooperates with the first anchor head seat 211 to prevent it from falling off. The end of the first anchor head body 62 is a first tapered end. The first expansion joint is set through the first anchor head body 62; The second anchor head body 72 is provided with a second deformation joint 721 parallel to its axis, and a second mounting groove 722 that cooperates with the second anchor head seat 221 to prevent it from falling off. The end of the second anchor head body 72 is a second conical end 723. The second expansion joint 721 is set through the second anchor head body 72.

[0047] In this embodiment, a first deformation joint is provided on the first anchor head body 62 and a second deformation joint 721 is provided on the second anchor head body 72. This allows the first anchor head body 62 to undergo elastic micro-deformation when it passes through the first anchor head holder 211 as the first suture needle body 61 exits. This allows the first anchor head holder 211 to be smoothly locked onto the first mounting slot of the first anchor head body 62. Similarly, the second deformation joint 721 provided on the second anchor head body 72 also allows the second anchor head holder 221 to be smoothly locked onto the second mounting slot 722 of the second anchor head body 72.

[0048] In this embodiment, the first tapered end allows the first deformation joint to undergo adaptive deformation when the first anchor head body 62 passes through the first anchor head holder 211. Similarly, the second tapered end 723 allows the second deformation joint 721 to undergo adaptive deformation when the second anchor head body 72 passes through the second anchor head holder 221.

[0049] In this embodiment, a multi-cavity tube 3 and a guide tube assembly 4 are fixed on both sides of the guide tube seat 1, and the guide tube seat 1, the multi-cavity tube 3 and the guide tube assembly 4 are coaxially arranged. The guide tube assembly 4 includes an outer guide tube 41 and an inner guide tube 42 arranged coaxially, with an annular channel between the outer guide tube 41 and the inner guide tube 42. The first suture assembly 6 includes a first suture needle body 61, a drive rod connecting seat 64 that is fitted on the inner guide tube 42 and can slide freely in the annular channel, and a first drive rod 65 fixed on the drive rod connecting seat 64; The first suture needle body 61 is connected and fixed on the drive rod connecting seat 64. The first drive rod 65 can drive the first suture needle body 61 to move through the drive rod connecting seat 64. In this embodiment, the first drive rod 65 is a conventional drive wire.

[0050] In this embodiment, the second suture needle body 71 is directly connected to the second drive rod, which is also a common drive wire. When the second suture needle body 71 extends, it is pushed by the second drive rod, and when the second suture needle body 71 retracts, it is pulled by the second drive rod. In this embodiment, the needle extension method of the first suture needle body 61 is the opposite of that of the second suture needle body 71. When the first suture needle body 61 extends, it is necessary to pull the first drive rod 65, and when the first suture needle retracts, it is necessary to push the first drive rod 65.

[0051] In this embodiment, a non-metallic tapered pusher 5 is also included, which is connected to the guide tube.

[0052] In this embodiment, the guide cylinder seat 1 is provided with a mounting groove 10 for mounting the support plate 2, and the support plate 2 is flipped and connected to the mounting groove 10 through a rotating shaft; The support plate 2 includes a first needle-threading surface 201 that is adapted to the shape of the bottom of the mounting groove 10, and a second needle-threading surface 202 that is adapted to the shape of the outer periphery of the guide tube seat 1. In this embodiment, the first needle-threading surface 201 is a plane and the second needle-threading surface 202 is an arc surface, so that when the support plate 2 is not flipped, that is, when the first needle-threading surface 201 is attached to the bottom of the mounting groove 10, the overall stitching consistency is good. The guide cylinder seat 1 is also provided with a limiting ramp 101 for the maximum rotation angle of the support plate 2; The support plate 2 is also provided with a drive rod mounting hole 24 and a limiting block 23 for pressing against the limiting ramp 101. In this embodiment, the maximum flip angle of the support plate 2 is 90°, which can improve the effectiveness of the penetration of the secondary diaphragm 81 and the primary diaphragm 82. In some embodiments, the maximum flip angle of the support plate 2 can also be set to other angles, such as 80° or 100°.

[0053] Example 2: like Figures 12 to 18 As shown, in this embodiment, the first suture assembly 6 includes a first suture needle body 61, a first reusable anchor head assembly fitted on the first suture needle body 61, and a first suture 63 connected to the first reusable anchor head assembly; The first needle hole 21 is provided with a first reuse anchor head locking block for elastically pressing against the first reuse anchor head assembly; The first reusable anchor head assembly is used to be engaged on the first reusable anchor head block or the first suture needle body 61 according to the feed depth of the first suture needle body 61; The second suture assembly 7 includes a second suture needle body 71, a second reusable anchor assembly 74 fitted on the second suture needle body 71, and a second suture 73 connected to the second reusable anchor assembly 74; The second needle hole 22 is provided with a second reuse anchor head locking block 27 for elastically pressing against the second reuse anchor head assembly 74; The second reusable anchor assembly 74 is used to engage with the second reusable anchor block 27 or the second suture needle body 71 according to the feed depth of the second suture needle body 71.

[0054] In this embodiment, a first reused anchor head block and a second reused anchor head block 27 are respectively provided in the first needle hole 21 and the second needle hole 22. Furthermore, the first anchor head body 62 used for one-time penetration of the septum 81 in Embodiment 1 is replaced with a first reused anchor head assembly, and the second anchor head body 72 used for one-time penetration of the septum 81 in Embodiment 1 is replaced with a second reused anchor head assembly 74. Simultaneously, after removing the first anchor head holder 211 in the first needle hole 21 and the second anchor head holder 221 in the second needle hole 22 in Embodiment 1, the first suture needle body 61 and the first reused anchor head assembly in this embodiment can achieve the first reused anchor head based on the feed depth. The component remains in the first needle hole 21 or exits the first needle hole 21 along with the first suture needle body 61. Similarly, the second reuse anchor head component 74 can also remain in the second needle hole 22 or exit the second needle hole 22 along with the second suture needle body 71, depending on the feed depth of the second suture needle body 71. This technical effect of selectively stopping or following the movement of the first reuse anchor head component and the second reuse anchor head component 74 allows the present application to selectively perform multiple suture fixation on the secondary septum 81 and the primary septum 82, rather than only performing suture once, which can effectively improve the suture fixation effect of the secondary septum 81 and the primary septum 82.

[0055] In use, after the first suture needle body 61 passes through the secondary septum 81, if it is necessary to thread the secondary septum 81 again, the first reuse anchor head assembly must first be kept in the first needle hole 21. Then, the first suture needle body 61 is withdrawn. After that, the entire suture device is slightly rotated, so that the position of the first reuse anchor head assembly changes. Then, the first suture needle body 61 is withdrawn again and the withdrawal depth of the first suture needle body 61 is adjusted so that the first suture needle body 61 is inserted into the first reuse anchor head assembly. Then, the first suture needle body 61 is withdrawn again, so that the first reuse anchor head assembly is withdrawn from the first needle hole 21 along with the first suture needle body 61. At this time, the first suture 63 has threaded the secondary septum 81 twice. Similarly, if it is necessary to thread the secondary septum 81 again, the above operation can be repeated. Similarly, multiple needle threading operations of the primary septum 82 can be realized through the second suture assembly 7, the second reuse anchor head assembly 74, and the second reuse anchor head locking block 27.

[0056] In this embodiment, the first suture needle body 61 includes a first suture needle tip, and a first needle tip annular protrusion is provided on the first suture needle tip; The first reusable anchor assembly includes a first reusable anchor body fitted onto a first suture needle, a first sliding ring, and a first tension spring; The first reused anchor head body is provided with a first anchor head annular groove, and a first sliding ring is slidably disposed in the first anchor head annular groove. One end of the first tension spring is connected to the end face of the first anchor head annular groove, and the other end is connected to the first sliding ring. The first reused anchor head body is also provided with a first anchor head annular protrusion. The projections of the first anchor head annular protrusion and the first needle annular protrusion along the axial direction of the first suture needle have overlapping areas. The end of the first reuse anchor head block near the first reuse anchor head is the first block end, and the side of the first block end near the first sliding ring is the first end curved surface, and the side of the first block end near the end face of the first anchor head ring groove is the first end straight surface. The side of the first sliding ring closest to the first tension spring is the first disengagement ramp; In this embodiment, as Figures 12 to 18 As shown, when the feed depth of the first suture needle body 61 is shallow, the end of the first locking block is precisely locked between the first sliding ring and the first anchor head ring groove, and the end of the first locking block is located on the side of the first sliding ring away from the first tension spring. The side of the first locking block end closest to the end face of the first anchor head ring groove is the straight side of the first end. Therefore, when the first suture needle body 61 retracts, the blocking force generated by the end face of the first anchor head ring groove on the end of the first locking block can cause the first anchor head ring protrusion and the first needle head ring protrusion to undergo elastic micro-deformation, thereby causing the first reusable anchor head body to remain within the first needle hole 21. When the feed depth of the first suture needle body 61 is deeper, the end of the first locking block is locked between the first sliding ring and the first anchor head ring groove, and the end of the first locking block is located on the side of the first sliding ring facing the first tension spring. On one side, when the first suture needle body 61 retracts, the first sliding ring will first slide in the first anchor head ring groove because it is stuck by the end of the first locking block, until the first sliding ring presses against the end face of the first anchor head ring groove. At this time, since the side of the first sliding ring close to the first tension spring is the first disengagement slope, as the first suture needle body 61 retracts, the first anchor head ring protrusion and the first needle head ring protrusion are not subjected to enough squeezing force. Therefore, before elastic micro-deformation occurs, the end of the first locking block moves downward under the pressure of the first disengagement slope until the end of the first locking block disengages from the first anchor head ring groove. Therefore, when the feed depth of the first suture needle body 61 is deep, the first anchor head body 62 will exit the first needle hole 21 as the first suture needle body 61 retracts.

[0057] The second suture needle body 71 includes a second suture needle tip 711, and a second needle tip annular protrusion 7111 is provided on the second suture needle tip 7111; The second reuse anchor assembly 74 includes a second reuse anchor body 741 fitted on the second suture needle 711, a second sliding ring 742, and a second tension spring 743; The second reused anchor head body 741 is provided with a second anchor head annular groove 7411, and a second sliding ring 742 is slidably disposed in the second anchor head annular groove 7411. One end of the second tension spring 743 is connected to the end face of the second anchor head annular groove 7411, and the other end is connected to the second sliding ring 742. The second reused anchor head body 741 is also provided with a second anchor head annular protrusion 7412. The projections of the second anchor head annular protrusion 7412 and the second needle annular protrusion 7111 along the axial direction of the second suture needle 711 have overlapping areas. The end of the second reuse anchor head block 27 near the second reuse anchor head is the second block end 271, and the side of the second block end 271 near the second sliding ring 742 is the second end curved surface 2712, and the side of the second block end 271 near the end face of the second anchor head annular groove 7411 is the second end straight surface 2711. The side of the second sliding ring 742 closest to the second tension spring 743 is the second disengagement slope 7421.

[0058] In this embodiment, the first reused anchor head assembly and the second reused anchor head assembly 74 have the same structure, the first suture needle body 61 and the second suture needle body 71 have the same structure, and the first reused anchor head latch and the second reused anchor head latch 27 have the same structure. Figures 12 to 17 The diagram only shows the structure of the second reuse anchor assembly 74, the second reuse anchor block 27, and the second suture needle body 71.

[0059] In this embodiment, based on the above principle, the second suture needle body 71 can also retain the second reuse anchor head body 741 in the second needle hole 22 or retract with the second suture needle body 71, depending on the feed depth.

[0060] In this embodiment, the support plate 2 is provided with a first block mounting hole and a second block mounting hole 26, as well as a first reset spring and a second reset spring 25 with the same structure; The first and second card mounting holes 26 are respectively connected to the first needle hole 21 and the second needle hole 22; The first reused anchor head block and the first reset spring are both disposed in the first block mounting hole. The first end of the first reused anchor head block can extend into the first needle hole 21 through the first reset spring. The second reused anchor head block 27 and the second reset spring 25 are disposed in the second block mounting hole 26. The second end 271 of the second reused anchor head block 27 can extend into the second needle hole 22 through the second reset spring 25.

[0061] The remaining structures of this embodiment are the same as those of Embodiment 1 above, and will not be described again here.

[0062] Example 3: This embodiment provides a patent foramen ovale suture device, including the patent foramen ovale suture mechanism described in Embodiment 1 or Embodiment 2 above.

[0063] In this embodiment, conventional structures such as a handle are also included. The handle is equipped with a push button and a drive wire, which allows the support plate 2 to be pushed and thus rotated on the guide tube seat 1. Similarly, the first suture needle body 61 and the second suture needle body 71 can be driven out through conventional structures such as the drive wire. The drive wire is connected to the first suture needle body 61, the second suture needle body 71, the support plate 2, etc. through the multi-lumen tube 3. This is a conventional technology and will not be described in detail here.

[0064] The remaining structures of this embodiment are the same as those of Embodiment 1 or Embodiment 2 described above, and will not be repeated here.

[0065] 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 suturing mechanism, characterized in that, It includes a first suturing assembly (6) and a second suturing assembly (7) for suturing the secondary septum (81) and the primary septum (82) respectively, as well as a guide tube seat (1) and a support plate (2) flipped onto the guide tube seat (1); The guide cylinder seat (1) is provided with a first guide hole (11) and a second guide hole (12). The first guide hole (11) and the second guide hole (12) are distributed along the axial direction of the guide cylinder seat (1) on both sides of the support plate (2). The support plate (2) is provided with a first needle hole (21) and a second needle hole (22). The first suture assembly (6) and the second suture assembly (7) are respectively disposed in the first guide hole (11) and the second guide hole (12), with the support plate (2) in the flipped state: The first suture assembly (6) can extend outward through the first guide hole (11) and penetrate the first needle hole (21), and the second suture assembly (7) can extend outward through the second guide hole (12) and penetrate the second needle hole (22). The first suture assembly (6) includes a first suture needle body (61), a first reusable anchor assembly fitted on the first suture needle body (61), and a first suture thread (63) connected to the first reusable anchor assembly. The first needle hole (21) is provided with a first reuse anchor head locking block for elastically pressing against the first reuse anchor head assembly; The first reusable anchor head assembly is used to be engaged on the first reusable anchor head block or the first suture needle body (61) according to the feed depth of the first suture needle body (61); The second suture assembly (7) includes a second suture needle body (71) and a second reusable anchor assembly (74) fitted on the second suture needle body (71), and a second suture thread (73) connected to the second reusable anchor assembly (74). The second needle hole (22) is provided with a second reuse anchor head block (27) for elastically pressing against the second reuse anchor head assembly (74); The second reusable anchor assembly (74) is used to engage with the second reusable anchor block (27) or the second suture needle body (71) according to the feed depth of the second suture needle body (71).

2. The patent foramen ovale suturing mechanism according to claim 1, characterized in that, The first guide hole (11) and the second guide hole (12) are both inclined and in opposite directions, and the first needle hole (21) and the second needle hole (22) are both inclined and in opposite directions; When the support plate (2) is in the flipped state: the first guide hole (11) and the first needle hole (21) are coaxial, and the second guide hole (12) and the second needle hole (22) are coaxial.

3. The patent foramen ovale suturing mechanism according to claim 2, characterized in that, The first suture assembly (6) includes a first suture needle body (61) and a first anchor head body (62) fitted on the first suture needle body (61), and a first suture thread (63) connected to the first anchor head body (62). The first suture thread (63) has a first anti-detachment end provided at its end. After passing through the first suture needle body (61), the first suture thread (63) is secured to the first anchor head body (62) by its first anti-detachment end. The first needle hole (21) is provided with a first anchor head holder (211) for matching with the first anchor head body (62) to prevent it from falling off. The second suture assembly (7) includes a second suture needle body (71) and a second anchor head body (72) fitted on the second suture needle body (71), and a second suture thread (73) connected to the second anchor head body (72). The end of the second suture thread (73) is provided with a second anti-detachment end. The second anti-detachment end of the second suture thread (73) passes through the second anchor head body (72) and is locked between the second anchor head body (72) and the second suture needle body (71). The second needle hole (22) is provided with a second anchor head holder (221) for matching with the second anchor head body (72) to prevent it from falling off.

4. The patent foramen ovale suturing mechanism according to claim 3, characterized in that, The first anchor head body (62) is provided with a first deformation joint parallel to its axis, and a first installation groove that cooperates with the first anchor head seat (211) to prevent it from falling off. The end of the first anchor head body (62) is a first conical end. The first expansion joint is set through the first anchor head body (62); The second anchor body (72) is provided with a second deformation joint (721) parallel to its axis, and a second mounting groove (722) that cooperates with the second anchor seat (221) to prevent it from falling off. The end of the second anchor body (72) is a second conical end (723). The second expansion joint (721) is set through the second anchor head body (72).

5. The patent foramen ovale suturing mechanism according to claim 1, characterized in that, The first suture needle body (61) includes a first suture needle tip, and a first needle tip annulus is provided on the first suture needle tip; The first reusable anchor assembly includes a first reusable anchor body fitted onto a first suture needle, a first sliding ring, and a first tension spring; The first reused anchor head body is provided with a first anchor head annular groove, and a first sliding ring is slidably disposed in the first anchor head annular groove. One end of the first tension spring is connected to the end face of the first anchor head annular groove, and the other end is connected to the first sliding ring. The first reused anchor head body is also provided with a first anchor head annular protrusion. The projections of the first anchor head annular protrusion and the first needle annular protrusion along the axial direction of the first suture needle have overlapping areas. The end of the first reuse anchor head block near the first reuse anchor head is the first block end, and the side of the first block end near the first sliding ring is the first end curved surface, and the side of the first block end near the end face of the first anchor head ring groove is the first end straight surface. The side of the first sliding ring closest to the first tension spring is the first disengagement ramp; The second suture needle body (71) includes a second suture needle tip (711), and a second needle tip annulus (7111) is provided on the second suture needle tip (7111). The second reuse anchor assembly (74) includes a second reuse anchor body (741) fitted on a second suture needle (711), a second sliding ring (742), and a second tension spring (743). The second reuse anchor head body (741) is provided with a second anchor head annular groove (7411), and a second sliding ring (742) is slidably disposed in the second anchor head annular groove (7411). One end of the second tension spring (743) is connected to the end face of the second anchor head annular groove (7411), and the other end is connected to the second sliding ring (742). The second reuse anchor head body (741) is also provided with a second anchor head annular protrusion (7412). The projections of the second anchor head annular protrusion (7412) and the second needle annular protrusion (7111) along the axial direction of the second suture needle (711) have overlapping areas. The end of the second reuse anchor head block (27) near the second reuse anchor head is the second block end (271), and the side of the second block end (271) near the second sliding ring (742) is the second end curved surface (2712), and the side of the second block end (271) near the end face of the second anchor head annular groove (7411) is the second end straight surface (2711). The side of the second sliding ring (742) near the second tension spring (743) is the second release ramp (7421).

6. The patent foramen ovale suturing mechanism according to claim 5, characterized in that, The support plate (2) is provided with a first block mounting hole and a second block mounting hole (26), as well as a first reset spring and a second reset spring (25); The first and second mounting holes (26) are respectively connected to the first needle hole (21) and the second needle hole (22); The first reuse anchor head block and the first reset spring are both disposed in the first block mounting hole. The first block end of the first reuse anchor head block can be inserted into the first needle hole (21) through the first reset spring. The second reuse anchor head block (27) and the second reset spring (25) are disposed in the second block mounting hole (26). The second block end (271) of the second reuse anchor head block (27) can be inserted into the second needle hole (22) through the second reset spring (25).

7. The patent foramen ovale suturing mechanism according to claim 1, characterized in that, It also includes a multi-cavity tube (3) and a guide tube assembly (4) fixed on both sides of the guide tube seat (1), and the guide tube seat (1), the multi-cavity tube (3) and the guide tube assembly (4) are coaxially arranged; The guide tube assembly (4) includes an outer guide tube (41) and an inner guide tube (42) arranged coaxially, with an annular channel between the outer guide tube (41) and the inner guide tube (42); The first suture assembly (6) includes a first suture needle body (61), a drive rod connecting seat (64) fitted on the inner guide tube (42) and able to slide freely in the annular channel, and a first drive rod (65) fixed on the drive rod connecting seat (64). The first suture needle body (61) is connected and fixed on the drive rod connecting seat (64).

8. The patent foramen ovale suturing mechanism according to claim 1, characterized in that, The guide cylinder seat (1) is provided with a mounting groove (10) for mounting the support plate (2), and the support plate (2) is connected to the mounting groove (10) by rotating the shaft; The support plate (2) includes a first needle-threading surface (201) adapted to the shape of the bottom of the mounting groove (10) and a second needle-threading surface (202) adapted to the shape of the outer periphery of the guide tube seat (1). The guide tube seat (1) is also provided with a limiting ramp (101) for the maximum rotation angle of the support plate (2). The support plate (2) is also provided with a drive rod mounting hole (24) and a limit stop (23) for pressing against the limit ramp (101).

9. A patent foramen ovale suture device, characterized in that, Includes a patent foramen closure suturing mechanism as described in any one of claims 1-8.

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