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Heart valve replacement prosthesis and threaded fastening heart apex pad thereof

A heart valve replacement and thread technology, which is applied in the field of medical devices, can solve the problems of the enlarged diameter and height of the apex pad body, the influence of the use effect, weak mechanics, etc., and achieve the effects of reducing production costs, convenient assembly, and convenient production and processing.

Pending Publication Date: 2022-03-15
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 weaknesses, which can easily lead to 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 threaded fastening heart apex pad thereof
  • Heart valve replacement prosthesis and threaded fastening heart apex pad thereof
  • Heart valve replacement prosthesis and threaded fastening heart apex pad thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0042] 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.

[0043] Refer to attached Figures 2 to 8 As shown, the threaded fastening apical pad 4 of the heart valve replacement prosthesis in this embodiment includes a plugging plate body 5 with a central through hole 51, a threaded locking nail 6 with a central hole 61 and a hollow column 7, the central through hole The hole 51, the central hole 61 and the internal through hole of the hol...

Embodiment 2

[0054] The second embodiment differs from the first embodiment above in that: refer to the attached Figures 9 to 16 As shown, the internal thread end 63 of the threaded locking nail 6 adopts a tapered internal thread structure that cooperates with the multi-lobed tapered stud 52 . In this way, the tapered internal thread structure directly cooperates with the multi-lobe tapered stud 52. During the rotation of the threaded locking nail 6, the multi-lobe tapered stud 52 is constantly squeezed and tightened to achieve the fastening of the tether 3. Purpose.

[0055] There is also the difference that the multi-lobe tapered stud 52 is arranged on a separate limiting disk 10, and the limiting disk 10 is arranged on the bottom of the sealing disk body 5, and the multi-lobe tapered stud 52 52 passes through the central through hole 51 of the blocking disc body 5 and is coaxial with it. In this way, the limiting disc 10 is installed from the blocking side of the blocking disc body 5...

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Abstract

The invention discloses a threaded fastening heart apex pad of a heart valve replacement prosthesis, and belongs to the field of medical instruments. The cardiac apex pad comprises a plugging disc body with a central through hole and a threaded locking nail with a central hole, and the central through hole of the plugging disc body comprises a tightening through hole defined by a plurality of conical studs and a tying rope used for penetrating through an inner support and an outer support in a heart valve replacement prosthesis. The threaded locking nail is matched with the multi-petal conical stud to achieve inward extrusion of the multi-petal conical stud, and clamping and fastening of the tether are completed. And a fixing pile with a hole for fixing the end part of the tether is arranged on the plugging disc body. According to the invention, the tether is fixed by means of threaded pressure application, deformation of the multi-petal conical stud, friction force and cross interlocking of materials, lossless extrusion and fastening of the tether are realized, and the device is simple, convenient and higher in safety. And through the arrangement of the fixing pile, the tail end of the tether can be knotted and fixed, the long-term use effect of tether fastening is guaranteed, complications can be prevented, and stability and reliability are high.

Description

technical field [0001] The invention relates to the field of medical devices, in particular to a heart valve replacement prosthesis and a thread fastening apex pad. Background technique [0002] At present, the best solution to heart valve diseases is transapical valve repair or replacement surgery, which 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 firmly fixed, and then all the instruments Withdraw, and finally perform apical suture. Under normal circumstances, the apex of the heart is only sutured but not blocked after the operation. Since the heart is beating all the time and the blood pressure in the ventricle is also very high, apical ble...

Claims

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Application Information

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IPC IPC(8): A61F2/24
CPCA61F2/2427A61F2/2409A61F2/2418A61F2/2412
Inventor 贾海涛陈登高梁涛孙嘉康李叙璋夏兆军
Owner BEIJING SINAPEX MEDICAL TECH CO LTD
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