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Delivery device for valve stent

A delivery device and valve technology, applied in the field of medical devices, can solve problems such as manipulation of delivery catheters, damage to cardiac tissue, blood oozing, etc., and achieve the effect of reducing the risk of surgery

Active Publication Date: 2020-01-10
KOKA NANTONG LIFESCIENCES CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The valve stent may not work well, or may damage sensitive heart tissue (which could lead to 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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  • Delivery device for valve stent
  • Delivery device for valve stent
  • Delivery device for valve stent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] This embodiment provides a delivery device for a valve 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 support 100 .

[0047] Such as image 3 , 4 Shown is a valve 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 and outer clip 102, and put it into the tightening sleeve 103 to achieve Complete functional fixes after steady state.

[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 with the lower end round table...

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Abstract

The invention discloses a delivery device for a valve stent. The delivery device comprises a shell, a conveying rod structure connected with the shell, a rotating structure, and a gear and rack structure. A conveying structure comprises a conveying rod, an outer pipe and a stabilizing pipe, the conveying rod is sleeved with the outer pipe, the outer pipe is sleeved with the stabilizing pipe, the conveying rod is used for adjusting the position of the valve stent, and the outer pipe is used for fixing the valve stent; the stabilizing pipe is used for tightening the valve stent; the gear and rack structure comprises a gear module; the gear module is connected with the conveying rod, and when the gear module rotates from a first position to a second position, the conveying rod is driven to adjust the position of the valve stent; the rotating structure is connected with the stabilizing pipe, and when the rotating structure rotates from a third position to a fourth position, the stabilizingpipe is driven to tighten the valve stent to complete implantation of the valve stent.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a delivery device for a valve support. Background technique [0002] The valve 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 approached to each other, so that the valve can be restored to the normal level of apposition. The prior art for valve stent implantation requires a larger incision on the patient's sternum (sternotomy) or a larger incision on the chest cavity (thoracotomy) to allow the surgeon to approach the patient. 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 procedures, in which prosthetic valves are d...

Claims

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Application Information

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IPC IPC(8): A61F2/24
CPCA61F2/2463A61F2/2466
Inventor 陈大凯
Owner KOKA NANTONG LIFESCIENCES CO LTD
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