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CN-224206938-U - Valve repair device

CN224206938UCN 224206938 UCN224206938 UCN 224206938UCN-224206938-U

Abstract

The utility model relates to the technical field of medical equipment, in particular to a valve repair device. The device comprises a rack (1), a gear (3) and a gear box (4), wherein the gear (3) and part of the rack (1) are positioned in the gear box (4), the gear (3) is meshed with the rack (1), 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, can safely and effectively realize the involution of the valve annulus through a unique gear-rack structural design, and solves the problem of the valve She Yisun existing in the traditional method.

Inventors

  • LI DONG
  • LI XIANG

Assignees

  • 北京卡迪泰医疗器械科技有限公司

Dates

Publication Date
20260508
Application Date
20250320

Claims (10)

  1. 1. The valve repair device is characterized by comprising a rack (1), a gear (3) and a gear box (4), wherein the gear (3) and part of the rack (1) are positioned in the gear box (4), the gear (3) is meshed with the rack (1) and connected, and the rack (1) can be driven to move by rotating the gear (3).
  2. 2. Valve repair device according to claim 1, characterized in that the device further comprises a knob (6), the knob (6) being fixed to the top end of the gear wheel (3), the gear wheel (3) being rotated by turning the knob (6) and thereby the rack (1) being moved.
  3. 3. Valve repair device according to claim 2, characterized in that the knob (6) is provided with a fixing post (22), the fixing post (22) being fixed in a fixing hole (23) of the gear (3) through a through hole (24) in the centre of the cover (5).
  4. 4. Valve repair device according to claim 2, characterized in that the knob (6) is provided with a notch (61), the knob (6) being rotatable by applying an external force to the notch (61).
  5. 5. Valve repair device according to claim 2, characterized in that the knob (6) is fixed to the gear tip in an interference fit or in a rivet connection.
  6. 6. Valve repair device according to claim 1, characterized in that the head end of the rack (1) is provided with elongated holes (11), which elongated holes (11) are intended to be fixed at both ends of the heart valve annulus.
  7. 7. Valve repair device according to claim 1, characterized in that the number of racks (1) is two, the racks are respectively positioned at two sides of the gear (3) and are meshed with the gear (3), tooth grooves (12) are arranged at the meshing parts of the racks and the gear (3), and the rotation of the gear (3) can drive the two racks (1) to move towards the direction approaching to the gear box (4) at the same time.
  8. 8. Valve repair device according to claim 1, characterized in that the device is further provided with a plectrum (2), the plectrum (2) is fixed in the clamping groove of the gear box (4), the plectrum (2) enables the rack to be only unidirectionally and oppositely combined in the knob screwing process, the knob (6) is loosened, and the rack (1) is limited and blocked through the plectrum (2).
  9. 9. Valve repair device according to claim 8, characterized in that the fixing means of the catch (2) and the catch groove on the gear box (4) are welded or mechanically fixed.
  10. 10. Valve repair device according to claim 8, characterized in that the device further comprises a cover (5), the cover (5) being snapped onto the gear box (4), the paddle (2), gear (3) and part of the rack (1) being located in the inner space of the cover (5) and the gear box (4).

Description

Valve repair device Technical Field The utility model relates to the technical field of medical equipment, in particular to a heart valve repairing device. Background In the prior art, the treatment of valve regurgitation generally depends on a manner of capturing and repairing valve leaflets, for example, the technical scheme disclosed in CN 119235511A, and the purpose of preventing valve regurgitation is achieved by capturing the valve leaflets and then performing coaptation on the valve leaflets to achieve edge-to-edge repair. Because the valve leaflets are thin and fragile, there is a risk of leaflet pull-off during pulling, or after long implantation. Therefore, there is a need to develop new repair valve technologies that reduce regurgitation. Disclosure of utility model Aiming at the prior art, the utility model provides a novel valve repairing device which comprises a rack, a gear and a gear box, wherein the gear and part of the rack are positioned in the gear box, the gear is meshed with the rack, and the rack can be driven to move by rotating the gear. In one embodiment, the device further comprises a knob, wherein the knob is fixed at the top end of the gear, and the gear can be driven to rotate by rotating the knob so as to drive the rack to move. In one embodiment, the knob is provided with a fixing column, and the fixing column passes through a through hole in the center of the box cover and is fixed in a fixing hole of the gear. In the utility model, as one of the implementation modes, the knob is provided with a notch, and the knob can be rotated by applying external force to the notch. In the utility model, as one implementation mode, the knob and the gear top end can be fixed in an interference fit or riveting mode. In the utility model, as one of the implementation modes, the device is also provided with the poking plate, the poking plate enables the rack to be only in one-way towards the middle in the screwing process of the knob, and the knob rack is loosened to be limited and blocked through the poking plate. In the present utility model, as one embodiment, the fixing manner of the pulling piece and the clamping groove on the gear case is a welding fixing manner or a mechanical fixing manner. In one embodiment of the present utility model, the head end of the rack is provided with elongated holes for fixing at both ends of the valve annulus of the heart valve. In the utility model, as one of the implementation modes, two racks are arranged, are respectively positioned at two sides of the gear and are meshed with the gear, tooth grooves are formed in the meshing parts of the racks and the gear, and the rotation of the gear can drive the two racks to move towards the direction close to the gear box. In the utility model, as one of the implementation modes, the device is also provided with the poking plate, the poking plate is fixed in the clamping groove of the gear box, the poking plate enables the rack to be only in one-way involution towards the middle in the knob screwing process, the knob is loosened, and the rack is limited and blocked through the poking plate. In the present utility model, as one embodiment, the fixing manner of the pulling piece and the clamping groove on the gear case is a welding fixing manner or a mechanical fixing manner. In one embodiment of the present utility model, the device further includes a cover that is fastened to the gear box, and the paddle, the gear, and a portion of the rack are located in an inner space between the cover and the gear box. In the present utility model, the valve repair device is made of an implant-grade metal material, preferably stainless steel, and more preferably cobalt-chromium alloy. The utility model is completely different from the traditional repair mode, because the tissue of the valve annulus is thicker, the fixation is more reliable, the technology realizes the involution of the valve annulus through the cooperation of the gear and the rack, and the effect of preventing the valve from being reversed. The utility model has the following beneficial effects: 1. The technology is a new technology for preventing valve regurgitation through valve annulus involution, and is completely different from the existing valve repair technology mode. 2. The traction valve ring is matched through the matching design of the gear-rack structure. 3. The design of the plectrum makes the rack only unidirectionally involuted towards the middle in the knob screwing process, and the knob is loosened to limit and lock the rack through the plectrum. 4. The utility model can be applied to regurgitation of both mitral and tricuspid valves. Drawings FIG. 1 is a schematic view of a gear box 4 and a plectrum 2 for installing the valve repairing device in the embodiment 1; FIG. 2 is a schematic top view (without knob) of the valve repair device of example 1 after mounting the gear 3 and rack 1; FIG. 3 is a schematic front view (without knob) of the v