Valve repairing device

Abstract

The utility model relates to the technical field of medical instruments, in particular to a valve repairing device. The device comprises a rack (1), a gear (3) and a gear box (4), the gear (3) and part of the rack (1) are located in the gear box (4), the gear (3) is connected with the rack (1) in a meshed mode, and the rack (1) can be driven to move by rotating the gear (3). The device is suitable for repairing mitral valve and tricuspid valve regurgitation, the involution of the valve rings can be safely and effectively realized through the unique gear and rack structural design, and the problem that the valve leaflets are easy to damage in the traditional method is solved.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a device for repairing heart valves. Background Technology

[0002] In existing technologies, the treatment of valvular regurgitation typically relies on capturing and repairing the valve leaflets. For example, the technical solution disclosed in CN119235511 A involves capturing the valve leaflets and then aligning them edge-to-edge to achieve edge-to-edge repair and thus prevent valvular regurgitation. However, because the valve leaflets are thin and fragile, there is a risk of leaflet detachment during stretching or after prolonged implantation.

[0003] Therefore, it is necessary to develop new technologies for valve repair that reduce regurgitation. Utility Model Content

[0004] In view of the above-mentioned prior art, the present invention provides a novel valve repair device, the device including a rack, a gear and a gearbox, the gear and part of the rack being located inside the gearbox, the gear meshing with the rack, and the rack being moved by rotating the gear.

[0005] In this utility model, as one embodiment, the device further includes a knob, which is fixed to the top of the gear. By rotating the knob, the gear can be rotated, thereby driving the rack to move.

[0006] In this utility model, as one embodiment, the knob is provided with a fixing post, and the fixing post passes through the through hole in the center of the cover and is fixed in the fixing hole of the gear.

[0007] In this invention, as one embodiment, the knob is provided with a notch, and the knob can be rotated by applying external force to the notch.

[0008] In this utility model, as one of the embodiments, the knob and the top of the gear can be fixed by either interference fit or riveting.

[0009] In this utility model, as one embodiment, the device is also provided with a paddle, which allows the rack to engage in only one direction towards the center during the rotation of the knob. When the knob is released, the rack is locked in place by the paddle.

[0010] In this invention, as one embodiment, the paddle is fixed to the slot on the gearbox by welding or mechanical means.

[0011] In this invention, as one embodiment, the head end of the rack is provided with an elongated hole, which is used to fix it to both ends of the heart valve annulus.

[0012] In this utility model, as one embodiment, the rack is configured as two racks, which are respectively located on both sides of the gear and mesh with the gear. The meshing part with the gear is provided with tooth grooves. When the gear rotates, it can drive the two racks to move simultaneously toward the gearbox.

[0013] In this utility model, as one embodiment, the device is further provided with a paddle, which is fixed in the slot of the gearbox. The paddle ensures that the rack can only align with the center in one direction during the rotation of the knob. When the knob is released, the rack is locked by the paddle.

[0014] In this invention, as one embodiment, the paddle is fixed to the slot on the gearbox by welding or mechanical means.

[0015] In this utility model, as one embodiment, the device further includes a cover, which is fastened to the gearbox, and the paddle, gear, and part of the rack are located in the internal space between the cover and the gearbox.

[0016] In this invention, the valve repair device is made of implantable metal material, preferably stainless steel, and more preferably cobalt-chromium alloy.

[0017] This invention is completely different from traditional repair techniques. Because the valve annulus tissue is thicker, it is more reliable after fixation. This technology uses the cooperation of gears and racks to achieve the engagement of the valve annulus and prevent valve regurgitation. This invention is a brand-new technology for repairing valves and reducing regurgitation.

[0018] The present invention achieves the following beneficial effects:

[0019] 1. This utility model is a novel technology that prevents valve regurgitation by aligning valve annulus, which is completely different from existing valve repair technologies.

[0020] 2. The traction valve rings engage through the gear and rack structure design.

[0021] 3. The design of the paddle allows the rack to engage in only one direction towards the center during the turning of the knob. When the knob is released, the rack is stopped and locked by the paddle.

[0022] 4. This invention can be applied to both mitral regurgitation and tricuspid regurgitation. Attached Figure Description

[0023] Figure 1 Example 1: Schematic diagram of the valve repair device with gearbox 4 and paddle 2 installed;

[0024] Figure 2Example 1: A top view of the valve repair device after the gear 3 and rack 1 are installed (excluding the knob);

[0025] Figure 3 Example 1: Front view of the valve repair device after installation of the cover 5 (excluding the knob);

[0026] Figure 4 Example 1: Front view of the valve repair device after installing knob 6 (including knob);

[0027] Figure 5 : Schematic diagram of the installation of knob 6 and gear 3 as described in the embodiment;

[0028] Figure 6 : Schematic diagram of valvular regurgitation disease;

[0029] Figure 7 Example 1: Diagram showing the valve repair device fixed at both ends of the heart valve annulus in use;

[0030] Figure 8 Example 1: A diagram showing the valve repair device in use after completing valve repair.

[0031] Figure 9 The diagram shows the effect of a valve repair device in prior art CN 119235511 A on preventing valve backflow.

[0032] Figure 10 Example 1: Overall appearance diagram of the valve repair device;

[0033] Figure 11 : Schematic diagram of the knob described in Example 1.

[0034] Explanation of reference numerals in the attached diagram: rack 1, elongated hole 11, tooth groove 12, paddle 2, gear 3, gearbox body 4, cover 5, knob 6, notch 61, fixing post 22, fixing hole 23, through hole 24. Detailed Implementation

[0035] The following embodiments are used to further illustrate the present invention, but do not limit the effective scope of the present invention in any way.

[0036] Example 1

[0037] This embodiment discloses a valve repair device, such as... Figure 2 , Figure 10 As shown, the valve repair device includes a rack 1, a paddle 2, a gear 3, a gearbox 4, a cover 5, and a knob 6. The paddle 2, the gear 3, and part of the rack 1 are located in the internal space between the gearbox 4 and the cover 5.

[0038] like Figure 2As shown, in one embodiment, the gear 3 meshes with the rack 1, and rotating the gear 3 can drive the rack 1 to move. The rack 1 and gear 3 are installed at corresponding positions in the gearbox 4, as shown below. Figure 2 Then close the lid 5, as shown. Figure 3 .

[0039] like Figure 2 As shown, as one of the implementation schemes, the rack 1 is configured as two racks, which are respectively located on both sides of the gear 3 and mesh with the gear 3. The meshing part with the gear 3 is provided with tooth grooves 12. The rotation of the gear 3 can drive the two racks 1 to move simultaneously towards the gearbox 4. The head end of the rack 1 is provided with an elongated hole 11. In this embodiment, the head end refers to the position of the rack 1 near the heart valve annulus.

[0040] like Figure 4 As shown, in one implementation scheme, the fixing post 22 of the knob 6 passes through the through hole 24 in the center of the cover 5 and is fixed in the fixing hole 23 of the gear. This fixing method is riveting. The structure of the knob 6 is as follows: Figure 10 As shown.

[0041] like Figure 1 As shown, in one embodiment, the paddle 2 is fixed in the slot of the gearbox 4. The paddle 2 can be fixed to the slot on the gearbox by welding or by mechanical fixing (e.g., riveting). The position of the paddle 2 fixed in the slot is such that the paddle 2 is located at the edge tooth groove 12 of the rack 1, as shown. Figure 2 As shown, there are paddles 2 at both the top and bottom.

[0042] As one of the implementation schemes, the aforementioned Figure 1 The paddle 2 shown is configured such that when the rack 1 moves towards the center of the gearbox 4, the paddle 2 will bend and make a clicking sound, but will not stop the rack from moving; conversely, when the rack 1 moves away from the gearbox 4 at both ends, the angle shown by the paddle 2 (e.g.) Figure 1 This will directly jam rack 1. Rack 1 cannot move and can only align with the center in one direction during the knob turning process. Loosening knob 6 will allow the lever 2 to lock rack 1 in place.

[0043] In this utility model, as one of the implementation schemes, the fixing method of the paddle 2 and the slot on the gearbox can be welding or mechanical fixing, preferably welding, and the mechanical fixing method can be riveting, for example.

[0044] As attached Figure 4 As shown, in one embodiment, the knob 6 is provided with a notch 61, and applying an external force to the notch 61 can rotate the knob 6. The knob 6 can be fixed to the center of the gear by either an interference fit or riveting.

[0045] As one implementation scheme, all structural components of the device described in this embodiment are, but are not limited to, implantable metal materials, such as stainless steel, with cobalt-chromium alloy being a commonly used material. The materials used in the device in this embodiment are merely illustrative and do not imply that the device can only be made of these materials.

[0046] like Figure 6 As shown, as one implementation scheme, when using the device, the knob 6 is rotated to adjust the device to a size suitable for the patient's valve, so that the elongated holes 11 at the ends of the two racks 1 are on the valve annulus. Then, the two racks 1 are fixed to both ends of the heart valve annulus with sutures. Figure 7 Finally, turn knob 6 clockwise, moving both racks 1 towards the gearbox 4 to engage the valve rings until there is no backflow from the valve. Then stop turning knob 6 to lock the racks 1 in place. Figure 8 This completes the valve repair.

[0047] This device needs to be disassembled after use. Remove the knob 6, open the cover 5, and reset the rack 1 for the next use.

Claims

1. A valve repair device, characterized in that, The device includes a rack (1), a gear (3) and a gearbox (4). The gear (3) and part of the rack (1) are located inside the gearbox (4). The gear (3) meshes with the rack (1). By rotating the gear (3), the rack (1) can be moved.

2. The valve repair device according to claim 1, characterized in that, The device also includes a knob (6), which is fixed to the top of the gear (3). By rotating the knob (6), the gear (3) can be rotated, thereby driving the rack (1) to move.

3. The valve repair device according to claim 2, characterized in that, The knob (6) is provided with a fixing post (22), which passes through the through hole (24) in the center of the cover (5) and is fixed in the fixing hole (23) of the gear (3).

4. The valve repair device according to claim 2, characterized in that, The knob (6) is provided with a notch (61), and the knob (6) can be rotated by applying external force to the notch (61).

5. The valve repair device according to claim 2, characterized in that, The knob (6) is fixed to the top of the gear by interference fit or riveting.

6. The valve repair device according to claim 1, characterized in that, The rack (1) has an elongated hole (11) at its head end, which is used to fix it to both ends of the heart valve annulus.

7. The valve repair device according to claim 1, characterized in that, The rack (1) is configured as two racks, which are respectively located on both sides of the gear (3) and mesh with the gear (3). The meshing part with the gear (3) is provided with tooth groove (12). When the gear (3) rotates, it can drive the two racks (1) to move simultaneously toward the gearbox (4).

8. The valve repair device according to claim 1, characterized in that, The device is also provided with a paddle (2), which is fixed in the slot of the gearbox (4). The paddle (2) makes the rack only align with the center in one direction during the turning of the knob. When the knob (6) is released, the rack (1) is locked by the paddle (2).

9. The valve repair device according to claim 8, characterized in that, The paddle (2) is fixed to the slot on the gearbox (4) by welding or mechanical means.

10. The valve repair device according to claim 8, characterized in that, The device also includes a cover (5) that is fastened to the gearbox (4), and the paddle (2), gear (3) and part of the rack (1) are located in the internal space of the cover (5) and the gearbox (4).

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