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Heart valve replacement prosthesis and needle threading and fastening heart tip pad thereof

A heart valve replacement and prosthesis technology, applied in the field of medical devices, can solve the problems of enlarged diameter and height of the apex pad body, influence of use effect, needle prolapse, etc., and achieves a reduction in production cost, convenient assembly, and convenient production and processing. Effect

Pending Publication Date: 2022-03-01
BEIJING SINAPEX MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This structure not only brings severe challenges to production and processing, but also has mechanical weak links. If the protrusion in the bush fails, the needle will come out, which will easily lead to the problem of failure during long-term use.
At the same time, due to the size design of the striker inside, the diameter and height of the apex pad will inevitably become larger, resulting in a greater impact on the use effect
[0004] This shows that the apical cushion of above-mentioned existing heart valve replacement prosthesis obviously still has inconvenience and defect in structure, method and use, and urgently needs to be further improved

Method used

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  • Heart valve replacement prosthesis and needle threading and fastening heart tip pad thereof
  • Heart valve replacement prosthesis and needle threading and fastening heart tip pad thereof
  • Heart valve replacement prosthesis and needle threading and fastening heart tip pad thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Refer to attached figure 1 As shown, the heart valve replacement prosthesis of this embodiment includes an outer stent 1 , an inner stent 2 , a tether 3 and an apical pad 4 . Among them, the outer bracket 1 and the inner bracket 2 are connected and assembled by plugging, the inner bracket 2 and the tether 3 are connected and assembled by crimping and suturing, and the apical pad 4 is used to fasten the tether 3 and is sealed in the suture. The outer side of the posterior apical membrane plays the role of fixing the internal and external stents and tethers, and blocking the apical membrane.

[0042] Refer to attached Figures 2 to 7As shown, the needle fastening apical pad 4 of the heart valve replacement prosthesis in this embodiment includes an occlusion plate 5 , a fixing needle 6 and a hollow post 7 . Wherein, the blocking disk body 5 includes a disk surface 51, a fixing block 52 arranged on one side of the disk surface 51, and a fixing column 53 arranged on the sa...

Embodiment 2

[0055] The difference between this embodiment and the first embodiment above is that, as attached Figure 8 As shown, the fixing post 53 can be elastically arranged vertically on the disk surface 51 , which is more convenient for the pre-installation and final positioning of the fixing pin 6 .

[0056] Specifically, the disk surface 51 is provided with a shrinking blind hole 59 containing an elastic member 58, and the bottom of the fixing column 53 is fixed inside the shrinking blind hole 59, so that the fixing column 53 can The movement up and down under the action of the elastic member can avoid the detachment of the fixing column 53 .

[0057] In this way, when the apex pad 3 is threaded and fastened in this embodiment, when the fixed needle 6 is assembled, the fixed needle 6 will be more easily inserted into the fixing of the disc body 5 due to the superelasticity of the fixed needle 6 itself combined with the elasticity of the elastic member. In the hole 55, and using th...

Embodiment 3

[0060] The difference between this embodiment and the first embodiment above is that, as attached Figures 9 to 12 As shown, the top of the fixing column 53 is also provided with a transverse snap-in groove 60 that matches the ring rod of the needle head part of the fixation needle 6, and the central axis of the transverse snap-in slot 60 is aligned with the center axis of the fixing hole 55. The central axis is on the same horizontal plane. The transverse snap-in groove 60 is used to push the fixed pin 6 into the fixed hole 55 and pass through the tether 3 to reach the final fixed position, and snap the ring bar of the needle head part into it, so that the fixed pin is up and down, Fixed in the left-right, front-back direction. And because the central axis of the transverse snap-in groove 60 and the central axis of the fixing hole 55 are on the same horizontal plane, it can ensure that the fixing pin 6 is in a natural straight state without any bending resistance and does no...

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Abstract

The invention discloses a heart valve replacement prosthesis and a needle threading and fastening heart tip pad thereof, and belongs to the field of medical instruments. The cardiac apex pad comprises a plugging disc body and a fixing needle, the plugging disc body comprises a disc face, a fixing block and a fixing column, the fixing block and the fixing column are arranged on one side of the disc face, center holes are formed in the disc face and the fixing block, fixing holes perpendicular to the center holes and communicated with the center holes are further formed in the fixing block, and the fixing needle penetrates into the fixing holes to fasten a tether. And the fixing column is matched with the tail part of the fixing needle to fix the fixing needle. A guide groove for the fixing needle to penetrate into the fixing hole is formed in the top of the fixing column. By improving the structure of the fixing block in the plugging disc body and combining with the improved arrangement of the fixing needle, simplification of threading of the fixing needle and fastening of a tying rope can be achieved, threading of the fixing needle can be achieved more visually and more conveniently, the fixing needle can be fixed in all directions in the pre-installation state and the final installation state by means of the ultra-high elasticity performance of the fixing needle, and the sealing effect is good. And the stability and reliability of short-term use and long-term use of the fixing needle are ensured.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a heart valve replacement prosthesis and a needle-fastened apex pad. Background technique [0002] Human heart valve disease is a serious heart disease with a large number of patients and a high fatality rate. Currently, there is no conservative treatment such as specific drugs. Surgical treatment is the best solution at present, such as surgical valve replacement or Interventional surgical repair or valve replacement. Currently, transapical valve repair or replacement surgery is a surgical method that combines the advantages of surgery and interventional surgery and is gradually recognized by the medical community. In the process of transapical valve repair or replacement, a hole must first be made at the apex of the heart, and then the instruments and products are delivered to the lesion through the hole, and the repair prosthesis or replacement prosthesis is accurately and firm...

Claims

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Application Information

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IPC IPC(8): A61F2/24
CPCA61F2/2427A61F2/2409A61F2/2418A61F2/2412A61F2220/0008A61F2220/0016A61F2/2457A61F2/2481A61F2/24
Inventor 贾海涛梁涛孙嘉康李叙璋陈登高
Owner BEIJING SINAPEX MEDICAL TECH CO LTD
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