CN2191632Y

CN2191632Y - Patent arterial duct blockage device

Info

Publication number: CN2191632Y
Application number: CN 94217021
Authority: CN
Inventors: 郑宏
Original assignee: Individual
Current assignee: Individual
Priority date: 1994-07-18
Filing date: 1994-07-18
Publication date: 1995-03-15
Anticipated expiration: 2004-07-18

Abstract

The utility model relates to a patent arterial duct blocking device, which is used for curing arterial duct congenital patent malformation between an aorta and lung vessels. The utility model comprises a steel cylinder 3, wherein, a main body 2 of the blocking device is arranged in the steel cylinder 3 after being straightened; the two ends of the main body 2 of the blocking device are connected with fixing devices 1; one end of the main body 2 of the blocking device is sheathed with a double-fold thin line 5; the main body 2 of the blocking device is a disk-shaped or cone-shaped or cylinder-shaped helical spring formed by winding of sealing ring thin springs; the two ends of the helical spring are positioned in the center of a spring ring; fiber products 4 are inlaid on the sealing ring thin springs. The utility model avoids the bitterness of chest opening brought by an operation and has the advantages of high safety, less complication, low cost, and simple and convenient operation.

Description

Patent arterial duct blockage device

This utility model relates to medical apparatus and instruments, specifically is a kind of patend ductus arteriosus occluder.

Patent ductus arteriosus (PDA) is a kind of common congenital heart disease, and cardiopathic second of the nature of taking the lead were all treated by open chest surgery in the past.Invented that foam embolus is stifled to close the treatment patent ductus arteriosus in 1966 abroad, started the new road of this disease of non-operative treatment.China begins to introduce this technology in nineteen eighty-three.The shortcoming of this method is: 1, complicated operation.2, the ductus arteriosus caliber must be less than the femoral artery caliber.3, the difficult coupling of stopper and ductus arteriosus stopper can occur and come off, and causes lung or body arterial thrombosis, even dead.4, can cause vascular complication.Therefore this The Application of Technology is subjected to bigger restriction.

Occurred a kind of double plate occluder in 1976 abroad again, or claimed that sealing umbrella, its advantage are full Venous system operations, reduced the tremulous pulse complication, but there is complex structure, only is suitable for the child of 7-8 kilogram, cause easily that simultaneously thrombosis is left over residual leakage and problem such as cost an arm and a leg.0.5 ten thousand dollars of each device charges, a sealing umbrella is 2.5 ten thousand RMB.

In recent years also have and adopt steel ring to carry out the report of patent ductus arteriosus thromboembolism, the outstanding problem of its existence is easily come off thromboembolism lung or a body tremulous pulse of steel ring, and subject range is narrow, and the ductus arteriosus diameter must be gone into the footpath for tremulous pulse and operate in addition less than 2mm, is prone to complication.

Although it is quite safe reliable that the surgery hands is stated the treatment patent ductus arteriosus, interventional therapy is a kind of method that need not open breast after all, should study energetically, to replace operative treatment.The subject matter that will solve is at present: 1, avoid coming off of thromboembolism device; 2, simplify the operation, preferably can carry out in Venous system; 3, be not subjected to the restriction of ductus arteriosus diameter; 4, low price; 5, complication is few.

The purpose of this utility model is to treat tremulous pulse at present intervention ruling by law to lead the problems referred to above that patent exists, a kind of simple structure is provided, cheap, difficult drop-off, can operate in Venous system, damage for a short time, complication is few, and is not subjected to the patend ductus arteriosus occluder of patent ductus arteriosus diameter restriction.

This utility model is achieved in that patend ductus arteriosus occluder comprises cylindrical shell, stopper main body, fixture and fine rule.The stopper main body is a spring of being made by close circle hairspring.The head end of spring and end all be positioned at the center of spring.Be embedded with fibre in the close circle hairspring, stopper main body two ends link to each other with fixture, and the stopper main body that has fixture after stretching is contained in the cylindrical shell, and an end links to each other with the fine rule of a two-fold.

The stopper main body is a disc spring of being made by close circle hairspring, and promptly each circle of spring all is positioned at same plane, is the involute shape, and the head of spring does not hold and draws back back formation tower shape vertically.

The stopper main body also can be the volute spring of being made by close circle hairspring.

The stopper main body can also be the cylindrical spring of being made by close circle hairspring.

The fixture of stopper main body has crossbar type and netted, and crossbar type is the cross bar that a centre has annulus, and the netted struts of being arranged by diagonal by elasticity woven dacron and two constitute

The fixture at stopper main body two ends can be to be crossbar type, is netted or an end is netted for the crossbar type other end.

During use, cooperate with cardiac catheter and seal wire, the cardiac catheter termination is placed patent ductus arteriosus place between aorta and the lung pulse, with seal wire with the stopper main body in the stopper cylindrical shell, fixture and brush line are crossed cardiac catheter and are delivered to patent arterial place, by seal wire and fine rule control, make the fixture at stopper main body two ends be fixed on patent ductus arteriosus both sides.Take out seal wire, fine rule and cardiac catheter then and get final product, hair or filamentary fibers goods that the stopper that is positioned at the patent ductus arteriosus by its embedding progressively form the thrombosis parallel operationization and merge with arterial wall, and the moving conduit of patent is shut.

The hardship of opening breast that this utility model can be avoided performing the operation and bring has overcome the problem that other several interventional therapy methods exist, and is safe and reliable, reduces complication, and cost is low, promotes easily and adopts.

Fig. 1 is a structure chart of the present utility model;

Fig. 2 is the structure chart of dish type stopper main body;

Fig. 3 is the structure chart of taper stopper main body;

Fig. 4 is the structure chart of cylindricality stopper main body;

Fig. 5 is crossbar type fixture structure figure;

Fig. 6 is netted fixture structure figure;

Fig. 7 is the sketch map of the netted fixture in compression back;

Fig. 8, Fig. 9, Figure 10 are the state diagrams that stopper and cardiac catheter, seal wire are used.

The utility model is described in further detail below in conjunction with accompanying drawing: patend ductus arteriosus occluder comprises cylindrical shell 3, stopper main body 2, fixture 1 and fine rule 5.Stopper main body 2 is the disc springs by the closed-coil spring coiling, volute spring or cylindrical spring, and the two ends of spring all are positioned at the center, are embedded with fibre 4 on the closed-coil spring.Stopper main body 2 two ends link to each other with fixture 1, and the stopper main body 2 after fixture and the stretching is contained in the cylindrical shell 3, and an end of stopper main body 2 links to each other with two-fold fine rule 5.

The crossbar type fixture is the cross bar of a middle band, can make of stainless steel silk, also can make of other tinsels.

Netted fixture is made of two strut 7 and elastic polyester cloth 8 of arranging by diagonal.Strut 7 can be made of stainless steel silk, or makes of other tinsels.

Spring wire as the stopper main body can be made of stainless steel silk, and the fibre 4 on it can be Woolen yarn or polyester thread.

Fine rule 5 can be the nylon wire of tension.

Claims

1, a kind of patend ductus arteriosus occluder comprises cylindrical shell, stopper main body, fixture and fine rule, it is characterized in that the stopper main body is a spring of being made by close circle hairspring, the head end of spring and the terminal center that all is positioned at spring; Be embedded with fibre in the close circle hairspring; The stopper two ends link to each other with fixture; The stopper main body that has fixture after stretching is contained in the cylindrical shell, and an end links to each other with the fine rule of a two-fold.

2, by the described patend ductus arteriosus occluder of claim 1, it is characterized in that the fixture at stopper main body two ends is crossbar type.

3, by the described patend ductus arteriosus occluder of claim 1, it is characterized in that the fixture at stopper main body two ends is netted.

4, by the described patend ductus arteriosus occluder of claim 1, it is characterized in that the fixture of stopper main body, an end is a crossbar type, the other end is netted.

5, by the described patent ductus arteriosus envelope of claim 1 device, it is characterized in that the stopper main body is a disc spring of being made by closed-coil spring.

6, by the described patend ductus arteriosus occluder of claim 1, it is characterized in that the stopper main body is a volute spring of being made by close circle hairspring.

7, by the described patend ductus arteriosus occluder of claim 1, it is characterized in that the stopper main body is a cylindrical spring of being made by close circle hairspring.