CN201168080Y

CN201168080Y - Repeatedly-usable stent for human body lumens

Info

Publication number: CN201168080Y
Application number: CNU2007201953876U
Authority: CN
Inventors: 沈阳
Original assignee: Individual
Current assignee: Individual
Priority date: 2007-11-13
Filing date: 2007-11-13
Publication date: 2008-12-24
Anticipated expiration: 2017-11-13

Abstract

The utility model relates to a reusable human luminal stent which can be used for treating human luminal diseases, the surface material of the stent fully covers and coats the surface of the stent and is protrudent in the stent surface by 0.10mm to 0.20mm to form a smooth overall body, and a recovery line with high overall strength, high elasticity and developing ability is arranged at the end part of the stent. As the overall material which is protrudent in the stent surface is covered on the surface of the stent, the reusable human luminal stent can prevent tumor tissues from being grown to the stent surface after the implantation in the human lumen, when the surface material of the stent is completely disappeared, the reusable human luminal stent is removed from human body. A bare stent is formed through the processing after removing the reusable human luminal stent from the human body, and a radioactive stent or a drug-containing stent is re-formed by adopting the processing technology of the radioactive stent or the drug-containing stent after the sterilization. Therefore, the bare stent can be reused, thereby saving the cost and having simple manufacturing process, easy processing and low cost.

Description

Reusable body lumen support

Technical field

This utility model relates to a kind of implanted medical device, relates to the invention of a kind of reusable body lumen support aspect or rather.

Background technology

The metal intraluminal stent of clinical employing NiTi memory alloy wire braiding applies to nearly 30 years of the treatment of luminal stenosis pathological changes such as human body esophagus, bile duct, trachea, prostate, increasing in recent years research and development organization drops into a large amount of financial resources and manpower is carried out the research that applies radiosiotope or slow releasing pharmaceutical at this kind metal support surface, and purpose is to adopt suitable method to make body lumen keep unimpeded for a long time.With the normal operation of warrantor soma, adopting above-mentioned radiant stand or coating stent in the treatment to obtain gratifying effect aspect blocking because of body lumen optimum or that malignant stricture causes.After but we see that in clinical use more sufferer is used above-mentioned support, have to interrupt this type of treatment, local recurrence, then adopt non-excellent therapeutic scheme in the effect of radiosiotope or the medicine back that disappears because of above-mentioned radiant stand or coating support, brought very large psychic pain to sufferer and sufferer family members.And above-mentioned support is long dead with support because of technology and reasons in structure tissue when the stent failure, can't be when the human body implant part takes out or take out unusual difficulty.

This shows that above-mentioned existing intraluminal stent still has defective, and the assistant officer waits to be improved.

Because the defective that above-mentioned existing radiation support exists, the design people is based on being engaged in this type of product design manufacturing for many years, amassing has abundant practical experience and Professional knowledge, actively studied innovation, in the hope of founding a kind of reusable body lumen support that improves molding structure, can improve the general molding structure of existing conventional intraluminal stent on the market, make it have more competitiveness.Through constantly research, design, and after studying sample and improvement repeatedly, create this utility model that has practical value finally.

The utility model content

Technical problem underlying to be solved in the utility model is, overcome the defective that existing intraluminal stent exists, and provide a kind of reusable body lumen support of new structure, make it both possess the effect of radiant stand or coating support, and can take out the support that also can repeat to possess therapeutic efficiency from the human body implant site smoothly, the benefit of this kind support maximum is the therapeutic scheme that sufferer can adopt this treatment in accordance with local conditions for a long time, avoided the therapy discontinued that causes because of the support factor, local recurrence, then the non-excellent therapeutic scheme of employing etc. are unfavorable for the factor of sufferer rehabilitation very much, and processing and manufacturing is easy, and cost is low.

This utility model solves its technical problem underlying and realizes by the following technical solutions.According to the reusable body lumen support that the utility model proposes, include support, it is characterized in that: be covered with at rack surface and contain radioisotopic medical macromolecular materials or pastille medical degradable material, radioactivity macromolecular material or pastille medical degradable material whole coated stents surface and protruding bracket surface 0.10mm～0.20mm forms level and smooth integral body, and the exhausting line that is provided with whole high strength, high resiliency, can develops in bracket end.

This utility model solves its technical problem and can also adopt following technical measures further to realize.

Preceding described support is that the braiding of NiTi alloy silk forms, and the NiTi diameter of alloy wire can be selected in 0.20mm-0.25mm

Preceding described medical macromolecular materials can adopt medical silica-gel, medical polyamine fat, medical grade silicon rubber.

Preceding described radiosiotope adopts I-125, Pd-103, P-32, Sr-90/Y-90, Re-188/186, Au-198, Ir-192 or Cs-137, and radiation activity is generally selected according to conditions of patients.

Aforesaid pastille medical degradable material adopts collagen protein and the drug regimen that is used for the treatment of the body lumen disease to form.

Before described whole high strength, high resiliency, the exhausting line overall diameter that can develop between 0.35mm～0.5mm, select, material adopts and contains synthetic fibers TIPPET line, the nylon wire of lubricant and tantalum wire is stranded forms.

This utility model compared with prior art has tangible advantage and beneficial effect.By above technical scheme as can be known, owing to adopted technique scheme, be covered with at rack surface and contain radioisotopic medical macromolecular materials or pastille medical degradable material, radioactivity macromolecular material or pastille medical degradable material whole coated stents surface and protruding bracket surface 0.10mm～0.20mm forms level and smooth integral body, and the exhausting line that is provided with whole high strength, high resiliency, can develops in bracket end.Guaranteed that sufferer can select to adopt the treatment product of this treatment in accordance with local conditions for a long time, greatly reduced the health care expenditures of sufferer, improved the use meaning of radiation support and pastille support, and manufacturing process has been simple, handling ease, cost is low.

In sum, this utility model really belongs to innovation on the kenel of space, and has the multinomial effect of enhancement than existing product, and simple in structure, is suitable for practicality, has the extensive value of industry.It is in limited field, technical development space, no matter structurally or bigger improvement all arranged on the function, and have large improvement technically, and produced handy and practical effect, and has the effect of enhancement really, thereby be suitable for practicality more, become a new and innovative, progressive, practical new design.

Above-mentioned explanation only is the general introduction partly of technical solutions of the utility model feature, for making the professional and technical personnel can clearer understanding technological means of the present utility model, and can be implemented according to the content of description, below with preferred embodiment of the present utility model and conjunction with figs. describe in detail as after.

The specific embodiment of the present utility model is provided in detail by following examples and accompanying drawing thereof.

Description of drawings

Fig. 1 is the structural representation of the reusable body lumen support of this utility model.

Fig. 2 is that front view and side view are launched in the part of the reusable body lumen support of this utility model.

Fig. 3 is the bell-mouthed structural representation of the reusable body lumen support of this utility model support two ends band.

Fig. 4 is the bell-mouthed structural representation of the reusable body lumen support of this utility model support one end band.

The specific embodiment

Below in conjunction with accompanying drawing and preferred embodiment, to according to its specific embodiment, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.

1. exhausting line, 2. radioactivity macromolecular material or pastille degradation material, 3. support

See also shown in Figure 1, the reusable body lumen support of this utility model, by 2 radioactivity macromolecular materials or pastille degradation material, the whole high strength of 3 supports and end, high resiliency, the exhausting line that can develop are formed.

Use NiTi alloy silk on support braiding mould, to knit out support 3, after Overheating Treatment, cooling, typing, form NiTi alloy silk braided support.It is stranded to contain the synthetic fibers TIPPET line of lubricant or nylon wire and tantalum wire, and stranded back is put on the back and tied a knot to the internal stent direction by Fig. 1, Fig. 3, the bracket end that penetrates shown in Figure 4.Support be fixed in apply on the mould, use brush, perfusion, the mode of soaking carry out combination with 2. radioactivity macromolecular materials or pastille degradation material and support 3, forms the reusable body lumen support of this utility model through fixing, sterilization back.

When treating that 2. radioactivity macromolecular materials on the reusable body lumen support of this utility model or pastille degradation material lost efficacy, use sleeve pipe and get the frame instrument to enter into implant site and under the observation of X line or endoscope, the reusable body lumen support of this utility model is retracted in the sleeve pipe.After the taking-up,, use same processing technology can obtain the reusable body lumen support of this utility model once more through forming reusable body lumen support 3. supports of this utility model after the operations such as line taking, chemical treatment, sterilization.

The above, it only is preferred embodiment of the present utility model, be not that this utility model is done any pro forma restriction, every foundation technical spirit of the present utility model all still belongs in the scope of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment did.

Claims

1, reusable body lumen support, it is characterized in that: the material of rack surface all covers coated stent surface and protruding bracket surface 0.10mm～0.20mm and forms level and smooth integral body, and the exhausting line that is provided with whole high strength, high resiliency, can develops in bracket end.

2, reusable body lumen support according to claim 1 is characterized in that: wherein said support is that the braiding of NiTi alloy silk forms, and the NiTi diameter of alloy wire can be selected in 0.20mm-0.25mm.

3, reusable body lumen support according to claim 1, it is characterized in that: wherein said whole high strength, high resiliency, the exhausting line overall diameter that can develop are selected between 0.35mm～0.5mm, and exhausting line adopts and contains synthetic fibers TIPPET line, the nylon wire of lubricant and tantalum wire is stranded forms.