CN2135346Y

CN2135346Y - Plasticity bicuspid valve shaping ring

Info

Publication number: CN2135346Y
Application number: CN 92232799
Authority: CN
Inventors: 刘维永
Original assignee: NO 1 HOSPITAL ATTACHED TO NO 4
Current assignee: NO 1 HOSPITAL ATTACHED TO NO 4
Priority date: 1992-09-12
Filing date: 1992-09-12
Publication date: 1993-06-09
Anticipated expiration: 2002-09-12

Abstract

The utility model belongs to the medical articles, particularly the technical field of a man-made bicuspid valve shaping ring used by cardiac surgery. The utility model is used in a heart valve shaping operation to replace a part of the valve replacement operations of patients. The utility model is characterized in that the utility model is composed of an approximately elliptical ring support; the support is divided into two parts; the part near the big valve point is a hard support which is made of stainless steel wire with good elasticity; the small valve point is provided with a soft support which is made of medical dacron; the outside of each support is covered with one layer of inner liner which is made of a medical terylene felt pad and one layer of skin which is made of medical knitting terylene. When used, the utility model can reserve patients' heart valves and prolong patients' lives.

Description

Plasticity bicuspid valve shaping ring

This utility model belongs to the artificial mitral valvuloplasty loop technique field that medical supplies, particularly department of cardiac surgery are used.

Existing artificial heart valve mainly contains two classes: mechanical prosthetic valve and bioprosthetic valve.Since these two kinds of valves come out, successfully treated hundreds thousand of examples, and obtained good hemodynamic effect, abroad artificial heart valve has been released as commodity.But mechanical prosthetic valve exists lifelong anticoagulant therapy problem, and bioprosthetic valve exists valvular calcification at a specified future date and failure problem, uses the patient of these two kinds of valves, and survival period reaches the equal less than 60% of person more than 10 years.

The purpose of this utility model is a kind of synthetical plasticity mitral valvuloplasty ring of development, be used for the valve forming operation, make a part of chronic valvular heart disease patient can keep the cardiac valve of self, recover himself dissection or physiological function, thereby avoid the long disadvantage of survival period behind the existing heart valve replacement surgery.

The purpose of this utility model is achieved in that on the basis of the anatomical features of investigation Chinese normal heart and dynamic function characteristics, determines shape, size and the designing requirement of annulus of mitral valve.Clinical observation finds that the shape approximation of annulus of mitral valve is in ellipse, and big lobe ring is more straight, and the middle part accounts for 1/3 of whole ring week slightly to what epirelief, and relaxing in cardiac cycle contracts changes lessly, mainly is to move up and down; Back lobe ring is curved, and length is about 2/3 of whole circumference, relaxing in cardiac cycle contracts change very obvious, systole ring week LVFS be 20%, the area minification is 36.1%.In view of the above, design the annulus of mitral valve support and made by hard and soft two kinds of materials, hard rack is made with the stainless steel silk that elasticity is good at big lobe place, so that change shape in operation property process.Soft support is made with the medical fibre fabric at valvula ring place.Liner is made with medical terylene felt pan earlier in the entire bracket outside, the medical knitted polyester parcel of reuse.

Advantage of the present utility model is: make a part of chronic valvular heart disease patient can keep the cardiac valve of self, substitute heart valve replacement surgery, thereby prolong the survival period of patient's postoperative.

Introduce shape of the present utility model, structure and composition material in detail below in conjunction with accompanying drawing.

Fig. 1 is an overall construction drawing of the present utility model;

Fig. 2 is the A-A profile;

Referring to Fig. 1. as seen from the figure, this utility model is made up of hard rack that is positioned at big lobe loop section (1) and the soft support (2) that is positioned at the valvula loop section, and both junction points are positioned at the middle part of valvula ring, and whole shape is similar to ellipse.Hard rack (1) be shaped as circular arc, the middle part is slightly to ring sunken inside (5), and convex slightly (see among Fig. 2 6).Soft support (2) also is a circular arc, all is in (see figure 2) in the same plane

Referring to Fig. 2, as seen from the figure, the outside of entire bracket, earlier with liner (3) parcel, as liner, reuse crust (4) parcel.Hard rack (1) is made by the good stainless steel silk of plasticity, and soft support (2) is made by the medical fibre fabric, and liner (3) is made by medical terylene felt pan, and crust (4) is made by medical knitted polyester.

Above-mentioned accompanying drawing and explanation thereof have provided embodiment of the present utility model.

Claims

1, a kind of plasticity mitral valvuloplasty ring, it is characterized in that: it is by forming with the lower part:

A. be made up of hard rack (1) and soft matter frame (2), both ends link to each other respectively, and global shape is similar to ellipse; Hard rack (1) is a circular arc, and the middle part is slightly to ring sunken inside (5), and convex slightly (6), makes with the stainless steel silk that elasticity is good; Soft support (2) also is a circular arc, all is in the same plane; Make with the medical fibre fabric;

B: the outside of entire bracket, with liner (3) parcel, liner (3) is made by medical terylene felt pan earlier; Reuse crust (4) parcel, crust (4) is made by medical knitted polyester.