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Venous valve stent and venous valve prosthesis

A venous valve and prosthesis technology, applied in the field of medical devices, can solve the problems of valve degeneration and anti-reflux ability, easy formation of local thrombus, and unsatisfactory effect, so as to improve sensitivity and reliability, and prevent venous blood reflux. , the effect of reducing the risk of local thrombosis

Pending Publication Date: 2022-04-12
HANGZHOU NUOYI MEDTECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such a structure, local thrombus is easily formed between the valve and the stent, and the valve is also prone to degeneration and insufficient anti-reflux ability. In the long run, the effect is not ideal

Method used

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  • Venous valve stent and venous valve prosthesis
  • Venous valve stent and venous valve prosthesis
  • Venous valve stent and venous valve prosthesis

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0066] First embodiment, see Figure 1 to 8 The structure shown and used.

[0067] First see Figure 1 to 4 The venous flap prosthesis 100 of the present embodiment includes a venous flap bracket 1, a valve 2, and a film 3.

[0068] Among them, the venous flap bracket 1 is a bare bracket, which forms a passage 101 through the distal end and the proximal end in the unfolded state, and the intravenous flap bracket 1 side is formed to form an outer convex sinus area 102 . The film 3 can be sutured in the inside of the venous valve bracket 1, and may be stitched on the outer side of the venous flap 1, cover the entire peripheral wall of the venous valve bracket 1, and the film 3 and the vein flap bracket 1 are combined into whole, and the intravenous petal prosthesis 100 is increased. The contact area of ​​the human blood vessels. The valve 2 is a single-flap structure, located inside the venous flap bracket 1, is connected to the venous flap bracket 1, and covers at least a portion of ...

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PUM

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Abstract

The invention provides a venous valve stent and a venous valve prosthesis. The venous valve support comprises a support body and a sinus cavity support. The support body is of a hollow cylindrical structure and can stretch out and draw back in the radial direction. The side part of the bracket body is provided with a window; the sinus cavity frame is provided with a fixed end and a free end which are opposite; the fixed end is connected to the windowing position; the free end overhangs on the outer side of the bracket body; a sinus area is formed on the inner side of the sinus cavity frame and communicated with the interior of the support body through the window. The venous valve prosthesis comprises a valve and the venous valve support, the valve is fixed in the support body and covers at least part of the sinus area, and the side, away from the sinus area, of the valve is a free edge. The reliability of the one-way conduction function can be improved, excessive stimulation to blood vessels can be avoided, and manufacturing is convenient.

Description

Technical field [0001] The present invention relates to the field of medical devices, and in particular, to a venous flap and a vein prosthesis. Background technique [0002] Intravenous surgical diseases is a common disease in surgery, which occurs in the lower limbs. Its main clinical manifestation is varicose veins, limbs swelling, and the skin nutritional impairment of foot boots area, such as dermatitis, pigmentation and ulceration formation. The main pathological reasons are the basic functions of the intravenous valve loss of one-way openness under the action of pathogenic factors. Vealas are blocked by life and work ability, and the weight can cause different levels of sickness. Therefore, the treatment of venous vein valve diseases is increasingly attached. At present, most of the diseases are still conservatively treated, such as drug treatment, pressure pumps, etc., surgical treatment such as femoral vein valve repair reconstruction, and clinical effects are not ideal....

Claims

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Application Information

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IPC IPC(8): A61F2/24
Inventor 王永胜郭伟李建民陈明心
Owner HANGZHOU NUOYI MEDTECH CO LTD