CN2633246Y

CN2633246Y - Medical net shape rack

Info

Publication number: CN2633246Y
Application number: CNU032560877U
Authority: CN
Inventors: 唐来坤; 郦俊生
Original assignee: XUHUI DISTRICT CENTRAL HOSPITAL SHANGHAI
Current assignee: XUHUI DISTRICT CENTRAL HOSPITAL SHANGHAI
Priority date: 2003-07-29
Filing date: 2003-07-29
Publication date: 2004-08-18
Anticipated expiration: 2013-07-29

Abstract

A medical net shape rack is suitable for being implanted into the canal cavity in human body, or into the blood vessel. A net rich in elasticity is painted with a layer of biological membrane to form a net shape rack. After the rack is positioned into the human body, small holes with the net shape are covered with a biological membrane, thereby preventing the human tissue from growing into the small holes. The utility model can keep the canal cavity and the blood vessel expedite, without the need of substitution in long period of implantation into the human body.

Description

Medical network

Technical field

This utility model relates to a kind of medical support, more specifically to a kind of medical network.

Background technology

Because certain disease can cause that tube chamber (as urethra, fallopian tube, digestive tract, blood vessel) is narrow, make tube chamber lead to and smooth or obstruction, often cause more disease.Formerly in the technology, adopt usually and insert memory-alloy mesh shape support in the tube chamber, tube chamber is strutted by the netted support of memorial alloy, keep the smooth clear and coherent of tube chamber.But this network is inserted in tube chamber or the blood vessel, tissue in the body lumen can progressively be grown by netted gap, insert time one length, can make the mesh of the support of inserting and rack bore all by the tissue growth of tube chamber, original unimpeded tube chamber is stopped up by the tissue of tube chamber again at leisure, the tube chamber that is strutted is obstructed again, and the network of inserting has been grown in lumen organization, and the network that is difficult to will before to have inserted again takes out (because of the normal structure of the meeting of taking-up damage tube chamber).

Summary of the invention

The purpose of this utility model is to provide a kind of medical network that has biofilm that can be compatible with normal structure.

The technical solution adopted in the utility model be scribble on the network surface that net constituted that is rich in telescopic resilience that forms by metal material memorial alloy or nonmetallic materials can be compatible with health adult tissue biofilm.When very thin one deck biofilm is coated on the network surface, this biofilm can all cover the aperture on original network and go up biofilm, make the original support of UNICOM mutually become not connected, in other words, the inner chamber and the external world are obstructed mutually, in network was inserted body lumen, this membrane support can block the lumen wall tissue and grow to intracavity by mesh, and caused that tube chamber stops up.Can keep the unimpeded of network inner chamber for a long time, reach the purpose of Drug therapy.

The utlity model has following advantage:

1, on network, scribbles one deck and the good biofilm of biological tissue's compatibility, it can be kept somewhere at tube chamber or blood vessel midium or long term, and keep the unimpeded of tube chamber or blood vessel.This utility model support is mainly used in digestive tract tube chamber, esophagus and angiostenosis etc. makes it can be unimpeded.

2, the network that scribbles biofilm can be implanted for a long time and need not change.

3, change as needing really, then change also more convenient.

Description of drawings

Fig. 1 is the network sketch map of technology formerly.

Fig. 2 scribbles the network sketch map of biofilm for this utility model surface.

The specific embodiment

Below in conjunction with drawings and Examples structure of the present utility model is elaborated.

As shown in Figure 1 be that the network of technology formerly is made of memory-alloy mesh 1.The distance of its two end 101 can be decided the bore at two ends according to the status requirement of inserting, and can be that an end diameter is big, and an end diameter is little, and rack surface is tiny netted aperture 102, and this aperture 102 communicates with the external world, and whole network has elasticity.

Shown in Figure 2 is network of the present utility model, mainly is to scribble the biofilm 2 that one deck can be compatible with tissue on net 1, netted aperture 102 is no longer communicated with the external world form an inner chamber.In the time of in the network of Fig. 2 is placed into people's tube chamber or blood vessel, separate in the tissue that makes its external world and tube chamber or the blood vessel, the tissue in the external world can not be grown into the interior intracavity to tube chamber or blood vessel by netted aperture.Because be coated with biofilm on the netted aperture, one deck and the extraneous film that does not communicate have been formed.

Said biofilm 2 is and the good biofilm of biological tissue's compatibility, is polytetrafluoroethylene (politef) thin film, or biological silica gel thin film.Select for use the diameter of support two end openings to equate, also can select unequal according to the needs of implantation site; Can be that an end diameter is big, other end diameter be little.Its two ends 101 distance also needs decide by inserting, can be distance some, also some network of distance weak point.This utility model network need have reasonable retractility.The material that on this netted aperture 102 is the above-mentioned biofilm 2 that will originally prepare is coated with thin film on this network, and whole netted aperture 102 is all separated with inner chamber.

Claims

1, a kind of medical network is to form the net (1) that is rich in telescopic resilience by metal material memorial alloy or nonmetallic materials to be constituted, and it is characterized in that scribbling one deck biofilm (2) on the net of telescopic resilience (1) being rich in.

2, medical network according to claim 1 is characterized in that said biofilm (2) is and the good biofilm of biological tissue's compatibility, is teflon film; Or biological silica gel thin film.

3, medical network according to claim 1, the two end opening diameters that it is characterized in that this network are for equal or unequal.