CN201200495Y

CN201200495Y - Occluder

Info

Publication number: CN201200495Y
Application number: CNU2008201051250U
Authority: CN
Inventors: 藏式先; 尹周
Original assignee: Lifetech Scientific Shenzhen Co Ltd
Current assignee: Lifetech Scientific Shenzhen Co Ltd
Priority date: 2008-04-21
Filing date: 2008-04-21
Publication date: 2009-03-04
Anticipated expiration: 2018-04-21

Abstract

The utility model provides an occluder, which is used for sealing heart septal defect. The occluder includes a bolt head, a metal mesh and a sealing head. In the closed body, the bolt head is provided with threads and a metal mesh structure, and the thread and the metal mesh structure are arranged in parallel, which can effectively reduce the height of the bolt head, thereby reducing the height of the occluder, and avoiding damage to the tissue caused by the occluder.

Description

Stopper

Technical field

This utility model relates to the interventional medical device field, particularly a kind of plugging device of heart septal defect.

Background technology

Continuous development along with getting involved material and intervention cardiology becomes important method through conduit interventional blocking device minimally-invasive treatment atrial septal defect (VSD), ventricular septal defect (ASD) and patent ductus arteriosus congenital heart diseases such as (PDA).

At present the stopper of at home and abroad using as shown in Figure 1, stopper comprises bolt head A, wire netting C and end socket D, this wire netting C two ends are fixed by end socket D and bolt head A respectively, wherein wire netting C is formed by memory alloy wire braiding typing.As shown in Figure 2, bolt head A one end is provided with the steel bushing B that is used for fixing wire netting C, and steel bushing B embeds bolt head A one end and fixes, and C is fixed together with wire netting.The other end at bolt head A is provided with a hole A2, and A2 inboard, this hole is provided with screw thread A1, and this screw thread A1 is used to be connected and fixed conveying stopper device.Though stopper can be realized heart septal defect is carried out shutoff, because this kind structure bolt head is higher, make stopper also uprise thereupon, in use easily tissue is caused damage.

The utility model content

This utility model provides a kind of stopper, with the height of reduction stopper, thereby avoids tissue is caused damage in using the stopper process.

This utility model provides a kind of stopper to comprise bolt head, wire netting and end socket, by described bolt head and end socket the wire netting two ends is fixed, and described bolt head is respectively equipped with screw thread and wire netting fixed structure, and wherein said screw thread is parallel with described wire netting fixed structure.

Preferably, described bolt head also is provided with fixing hole, and described screw thread is located on the described fixing hole sidewall.

Preferably, described screw thread is located at described bolt head lateral wall.

Preferably, described end socket is located at described wire netting inside.

This utility model stopper be arranged in parallel with the screw thread that is connected and fixed conveying stopper device by the holddown groove of fixing metal net on the bolt head, reduce the height of bolt head, thereby reduce by bolt head and the end socket height of the stopper that constitutes of fixing metal net two ends respectively, avoid using in the stopper process tissue is caused damage.

Description of drawings

Fig. 1 is a prior art stopper sketch map;

Fig. 2 is the bolt head sketch map on the existing stopper;

Fig. 3 is this utility model embodiment stopper sketch map;

Fig. 4 is the bolt head cutaway view on this utility model first embodiment stopper;

Fig. 5 is the bolt head sectional view on this utility model first embodiment stopper;

Fig. 6 is the bolt head cutaway view on this utility model second embodiment stopper;

Fig. 7 is the bolt head sectional view on this utility model second embodiment stopper;

Fig. 8 is the position view of this utility model embodiment when regaining stopper and entering the sheath pipe;

Fig. 9 is the sketch map that this utility model embodiment stopper discharges in left ventricle;

Figure 10 is that this utility model embodiment stopper first end face is adjacent to left ventricle inwall figure;

Figure 11 is the position view that this utility model embodiment stopper metallic support net embeds the ventricular septal defect place;

Figure 12 is the position view that is plugged in the ventricular septal defect place after this utility model embodiment stopper discharges fully.

The realization of this utility model purpose, functional characteristics and advantage will be in conjunction with the embodiments, are described further with reference to accompanying drawing.

The specific embodiment

This utility model embodiment stopper makes wire netting become a closed shape by bolt head and end socket difference fixing metal net two ends, is respectively equipped with the wire netting fixed structure and is connected and fixed the screw thread of carrying the stopper device at first end face of bolt and sidewall.By wire netting fixed structure and screw thread are be arranged in parallel, can reduce the height of bolt head, thereby reduce the height of stopper.

The utility model proposes first embodiment, as shown in Figure 3, a kind of stopper comprises wire netting 1, end socket 4 and bolt head 5, and wherein wire netting 1 is formed by some memory wire braiding typings, can be preset to shape according to actual needs, as column, tubulose etc. with various profiles.By described bolt head 5 and described end socket 4 difference fixing metal nets 1 two ends, use wire netting 1 to become a closed shape, end socket 4 forms first card 2 with described wire netting 1 simultaneously, bolt head 5 forms second card 3 with described wire netting 1, described end socket 4 on first card 2 to the inner chamber depression of described wire netting 1.Described end socket 4 is located at the closed shape inboard, and bolt head 5 is located at the closed shape outside, and end socket 4 is located on the same straight line with bolt head 5.

As shown in Figure 4 and Figure 5, be respectively bolt head 5 cutaway views and sectional view on this utility model embodiment stopper.Be provided with wire netting fixed structure 51 at bolt head 5 one end faces, described wire netting fixed structure 51 is a hole, is used for fixing wire netting 1, and is also by welding manner that wire netting 1 is fixing with bolt head 5 simultaneously.Also be provided with the screw thread 52 that is used to be connected and fixed conveying stopper device in the lateral wall of bolt head 5, this screw thread 52 be arranged in parallel with wire netting fixed structure 51.Described wire netting fixed structure 51 can also be made as other structures as required, as groove shape and ditch shape etc.Wire netting 1, is placed on wire netting 1 earlier in the wire netting fixed structure 51 that is poroid and waits other modes and bolt head 5 to fix by welding or extruding fixedly the time with bolt head 5.

Stopper is connected and fixed by screw thread on the bolt head 5 52 and the device of carrying stopper in course of conveying, when stopper is transported to the appropriate location, carries the device of stopper to separate with stopper.Stopper is placed on the appropriate location, because the screw thread 52 on the bolt head 5 is parallel with wire netting fixed structure 51, makes the height reduction of bolt head 5, so the stopper height also reduces, thus the damage that can avoid stopper tissue to be caused in use.

This utility model also proposes second embodiment on the first embodiment basis, as shown in Figure 6 and Figure 7, be respectively bolt head 5 cutaway views and sectional view on this utility model embodiment stopper.At the fixing hole 53 that is axially arranged with of bolt head 5, the sidewall of described fixing hole 53, promptly the medial wall of bolt head 5 is provided with screw thread 52, is used to be connected and fixed the device of carrying stopper.Also be provided with the wire netting fixed structure 51 parallel with fixing hole 53 at an end face of bolt head 5, be used for fixing wire netting 1, this wire netting 1 fixed structure 51 is the groove shape ringwise.Wire netting 1 with bolt head 5 fixedly the time, is placed on wire netting 1 earlier in the wire netting fixed structure 51 of groove shape ringwise and waits other modes and bolt head 5 to fix by welding or extruding, and other structures and annexation and previous embodiment are similar.

For the operation principle of this utility model the foregoing description further being described better, the concrete occupation mode of following brief description the foregoing description stopper.

With the heart defect stopper that is used for ventricular septal defect is example, and described conveying stopper device adopts wirerope.At first under the guiding of special equipment, set up arteriovenous track, insert sheath pipe 8, then stopper is pushed sheath pipe 8, as shown in Figure 8 through track through interventricular septum.

As Fig. 9 and shown in Figure 10, under the promotion of wirerope 9, stopper is released sheath pipe 8 and sends to left ventricle, make first card 2 of stopper open and fit with left ventricular wall, determine with the applying position of left ventricular wall good after, return and remove sheath pipe 8, second card 3 of ventricular septal defect is opened.

As Figure 11 and shown in Figure 12, discharge second card 3, make stopper embed the ventricular septal defect place, thereby make the sealing of damaged place.

The above only is a preferred embodiment of the present utility model; be not so limit claim of the present utility model; every equivalent structure or equivalent flow process conversion that utilizes this utility model description and accompanying drawing content to be done; or directly or indirectly be used in other relevant technical fields, all in like manner be included in the scope of patent protection of the present utility model.

Claims

1. A occluder, comprising a metal mesh, a head and a bolt head, the two ends of the metal mesh are respectively fixed by the bolt head and the head closure, and the bolt head is respectively provided with a screw thread and a metal mesh fixing structure, and its characteristics In that, the thread is parallel to the metal mesh fixing structure.

2 . The occluder according to claim 1 , wherein the plug head is further provided with a fixing hole, and the thread is provided on a side wall of the fixing hole. 3 .

3. The occluder according to claim 2, wherein the thread is provided on the outer wall of the plug head.

4. The occluder according to claim 3, wherein the sealing head is arranged inside the metal mesh.