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A delivery device for a valve clamping stent

A delivery device and valve technology, applied in the field of medical devices, can solve problems such as bleeding, manipulation of delivery catheters, and damage to heart tissue

Active Publication Date: 2021-09-10
KOKA NANTONG LIFESCIENCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Valve clipping stents may not work well, or may damage sensitive heart tissue (which could result in a pacemaker being fitted to the patient), or may cause bleeding at the interface between the stented valve and native tissue
Another problem with transvascular delivery is the difficulty of navigating a delivery catheter large enough to accommodate a stent-valve for implantation along tortuous and often narrow vessels

Method used

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  • A delivery device for a valve clamping stent
  • A delivery device for a valve clamping stent
  • A delivery device for a valve clamping stent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This embodiment provides a delivery device for a valve clamping stent, such as figure 1 , 2 As shown, it includes a housing 400 , a delivery rod structure 300 , a rotating structure 500 , a rack and pinion structure 600 , a cover plate 700 , and a valve clamping bracket 100 .

[0047] Such as image 3 , 4 Shown is a valve clamping stent 100 composed of an inner clip 101, an outer clip 102, and a tightening sleeve 103. The realization process is to clamp the valve through the elastic force and barbs on the inner clip 101, outer clip 102, and receive the tightening sleeve 103 Functional fixes are completed after reaching a steady state in .

[0048] The material of the inner clip 101 can be nickel-titanium alloy which has been heat-treated to be Y-shaped and has elasticity; there are barbs on the outside of the two petals, which can ensure that the valve will not fall off when the valve is clamped. The bottom of the inner folder 101 is rectangular and can be matched w...

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Abstract

The invention discloses a delivery device for a valve support, which comprises a housing, a delivery rod structure connected to the housing, a rotating structure, and a rack and pinion structure; the delivery structure includes a delivery rod, an outer tube, and a stabilizing tube; the delivery The rod is sleeved in the outer tube, the outer tube is sleeved in the stabilizing tube, the delivery rod is used to adjust the position of the valve support, and the outer tube is used to fix the valve support; the stable tube is used to tighten the valve support; The rack and pinion structure includes a gear module; the gear module is connected with the delivery rod, and when the gear module rotates from the first position to the second position, it drives the delivery rod to adjust the position of the valve support; the rotation structure and the stable The tube is connected, and when the rotating structure rotates from the third position to the fourth position, the stabilizing tube is driven to tighten the valve support to complete the implantation of the valve support.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a delivery device for a valve clamping stent. Background technique [0002] The valve clamping stent is applied on the diseased valve leaflets, and by fitting the free edge of the diseased valve leaflets, the normal chordae on both sides of the diseased part are brought close to each other, so that the valve can be restored to the normal alignment level. For the implantation of the valve clamping stent, the prior art requires a larger incision (sternotomy) on the patient's sternum or a larger incision (thoracotomy) on the chest cavity to allow the surgeon to close to the patient's heart. However, this approach requires arresting the patient's heart and cardiopulmonary bypass (ie, a technique that mechanically replaces the function of the heart and lungs). Efforts have been made in recent years to lessen the trauma of implantation through the use of transcatheter procedu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61F2/24
CPCA61F2/2463A61F2/2466
Inventor 陈大凯
Owner KOKA NANTONG LIFESCIENCES CO LTD
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