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Heart valve replacement prosthesis and threaded fastening heart apex pad thereof

A heart valve replacement and screw thread technology, which is applied in the field of medical devices, can solve problems such as enlarged diameter and height of the apical pad, influence on the use effect, and weak mechanics, and achieve the effects of reduced production costs, convenient assembly, and convenient production and processing

Pending Publication Date: 2022-03-04
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

[0036] 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.

[0037] 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

[0050] The second embodiment differs from the first embodiment above in that: refer to the attached Figures 9 to 10 As shown, the locking mechanism of the threaded locking nail 6 adopts a plurality of sharp edges 66 disposed on the inner side of the bottom end of each stud 64 . In this way, when the threaded locking nail 6 is screwed into the central through hole 51, when the sharp edge 66 is tightened with the inward deformation of the stud 64, it can be embedded in the clamped tether 3 to realize the tightening of the tether 3. Further fastening, improve the fastening effect.

[0051] Other parts of this embodiment are the same as those of the foregoing embodiment, and will not be repeated here.

Embodiment 3

[0053] The third embodiment differs from the first embodiment above in that: refer to the attached Figures 11 to 12 As shown, the locking mechanism of the threaded locking nail 6 adopts a plurality of transverse annular grooves 67 arranged inside each stud 64 . In this way, when the threaded locking nail 6 is screwed into the central through hole 51, when the transverse ring groove 67 is tightened with the inward deformation of the stud 64, the clamped tether 3 can be engaged, and the same can be achieved for the tether. Improvement of the fastening effect of the rope 3.

[0054] In this embodiment, a plurality of transverse annular grooves 67 are distributed from top to bottom along the axial direction of the stud, and the number is between 1 and 10, forming sharp edges between the annular grooves, but not too sharp to prevent cutting of the tether , causing damage to the tether. Of course, the plurality of transverse ring grooves 67 can also be configured as an internal t...

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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, the inner wall of the central through hole of the plugging disc body is arranged to be of an inverted-cone-shaped structure with an internal thread, a hollow stud with a vertical separation groove is adopted for a screw rod part of the threaded locking nail, and when the threaded locking nail is screwed into the central through hole of the plugging disc body, the threaded locking nail is screwed into the central through hole of the plugging disc body. The hollow stud deforms inwards under extrusion of the inverted-cone-shaped structure, and clamping and fastening of the tether are completed. And the inner side of each stud of the screw part is provided with a padlock mechanism. And a fixing pile with a hole is arranged on the plugging disc body. The hollow stud is pressed by the threads to deform inwards, lossless extrusion and fastening of the tether are achieved by means of friction force and a locking mode of the padlock mechanism, and the device is simple, convenient and higher in safety. Knotting and fixing of the tail end of the tether can be achieved through the fixing pile, the short-term and long-term 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] Transapical valve repair or replacement surgery has become a surgical method recognized by the medical profession. 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 bleeding is a very serious complication after the operation. Once apical bleeding occurs result in the death of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61F2/24
CPCA61F2/2427A61F2/2409A61F2/2418A61F2/2412
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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