CN201510383U

CN201510383U - Balloon triggering self-expanding stent

Info

Publication number: CN201510383U
Application number: CN2009201641426U
Authority: CN
Inventors: 李家一; 王海昌
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-07-17
Filing date: 2009-07-17
Publication date: 2010-06-23
Anticipated expiration: 2019-07-17

Abstract

The utility model discloses an appliance used in a human body, in particular to a balloon triggering self-expanding stent applied in the therapy of vascular diseases. The balloon triggering self-expanding stent comprises a pipe wall, a framework and slot holes, wherein a plurality of the slot holes are arranged and staggered on the pipe wall in parallel, the slot holes are connected through the framework, a balloon is adhered with the stent through critical force, and the stent is made from nickel tantalum material, has excellent flexibility and good biocompatibility with blood vessels of the human body, avoids damaging walls of the blood vessels together with a guide pipe in the intervention process, reduces the probability that sclerosis plaque falls, reduces the risk of cerebral infarction, and guarantees the safety of surgeries, and the expansion of the balloon triggering stent keeps the intervention process simple and safe, the slots holes on the stent enable the stent to generate lasting action force for the blood vessels, and the stent has excellent restoration ability after deforming.

Description

Sacculus flip-over type self-expanding stent

Technical field

This utility model relates to a kind of intravital apparatus of flesh that imposes on, particularly a kind of sacculus flip-over type self-expanding stent that is applied to the angiopathy treatment.

Background technology

At present, coronary heart disease, cerebrovascular disease have become especially one of healthy principal disease of middle-aged and elderly people of the harm public, for example the main diseases of coronary heart disease is because of causing coronary stricture or obturation and then making coronary flow minimizing or interruption cause owing to coronary atherosclerosis, medically, at the angiopathy that this narrow property or inaccessible pathological changes cause, fundamental method is balloon dilatation (PTCA).The ultimate principle of balloon dilatation is by mechanical forces (sacculus extruding narrow positions) narrow lumen of vessels to be enlarged.May only need balloon dilatation just passable for some simple vascular lesion, but vascular restenosis often takes place simple balloon dilatation, therefore, in recent years, the balloon expandable postoperative is replanted into stent in the treatment often.The effect of support then is intravascular space after the increase to be maintained and elastical retraction does not take place, and is replenishing or supporting balloon dilatation.Some patient also needs support to make up because the balloon expandable postoperative vascular dissection occurs or breaks.Support has a variety of sorting techniques.Because the design difference of support can be divided into network (wallstent), tubular bracket, winding-type support, annular support.According to the difference of timbering material, can be divided into 316L stainless steel stent, nickel support, tantalum support.According to the difference of mode of movement, be divided into inflation support and self-expanding support.Design different supports according to specific use, as the support that is fit to bifurcated lesions be fit to ramose support and at the covered stnet of hemangioma or perforation.Think that now ideal support should possess following feature: (1) is flexible; (2) spike is good; (3) head end (profile) is little; (4) not saturating x light; (5) antithrombotic; (6) good biocompatibility; (7) spreading performance is reliable; (8) good supporting force; (9) cover; (10) surface area is little; (11) meet hydrodynamics.At present in the support of using, do not have a kind of support and can have above-mentioned advantage simultaneously, therefore develop a kind of convenient and practically as far as possible, the needs of the outstanding New-support of advantage are just anxious to be urgent.

The utility model content

Technical problem to be solved in the utility model provide a kind of have use flexibly, the sacculus flip-over type self-expanding stent of the interventional therapy of advantages such as spike is good, X-ray opaque.

For solving the problems of the technologies described above, this utility model is realized as follows: the whole one-tenth of sacculus flip-over type self-expanding stent described in the utility model tubulose, and it is made up of tube wall, skeleton, slotted eye and sacculus; Parallel misalignment is arranged with some slotted eyes on the tube wall; Link to each other by skeleton between slotted eye and the slotted eye; Sacculus and support are bonding with critical force.

Described sacculus flip-over type self-expanding stent select for use have good biocompatibility, the material of support force and elastic memory, such as Ultimum Ti metal material and alloy material thereof.

Good effect of the present utility model: sacculus flip-over type self-expanding stent described in the utility model adopts nickel-titanium alloy material, has good compliance, has good biocompatibility with human vas, avoided in the intervention procedure conduit and support to the damage of blood vessel wall, reduced the probability that plaque peels off, the cerebral infarction risk reduces, the safety of operation is guaranteed, sacculus triggers the support expansion makes intervention procedure simple and safe, it is lasting to the active force of blood vessel that the slotted eye design of support makes the support value go into the back, and support has good recovery deformability.

Description of drawings

Below in conjunction with the drawings and specific embodiments this utility model is described in further detail.

Fig. 1 is this utility model structural representation

Among the figure, 1 tube wall, 2 skeletons, 3 slotted eyes

4 sacculus, 5 seal wires

The specific embodiment

As shown in Figure 1, the whole one-tenth of sacculus flip-over type self-expanding stent described in the utility model tubulose is made up of tube wall 1, skeleton 2 and slotted eye 3; Parallel misalignment is arranged with some slotted eyes 3 on the tube wall 1; Link to each other by skeleton 2 between slotted eye 3 and the slotted eye 3; Sacculus 4 is bonding with critical force with support.

Work process of the present utility model is:

During enforcement, support is elastic tubular structure, contraction is pasted and is wrapped on the minor diameter sacculus of not opening 4, and sacculus 4 is bonding with critical force with support, and seal wire 5 is sent into lesion in the lesion vessels, sacculus 4 expands to trigger and destroys critical bonding force, the support self-expanding supports blood vessel, covers lesion, so far withdraw from seal wire 5 and sacculus 4, work process finishes.

Claims

1. sacculus flip-over type self-expanding stent is characterized in that: it is whole to become tubulose, is made up of tube wall (1), skeleton (2) and slotted eye (3); Tube wall (1) is gone up parallel misalignment and is arranged with some slotted eyes (3); Link to each other by skeleton (2) between slotted eye (3) and the slotted eye (3); Sacculus (4) is bonding with critical force with support.

2. sacculus flip-over type self-expanding stent according to claim 1, it is characterized in that: described sacculus flip-over type self-expanding stent select for use have good biocompatibility, the material of support force and elastic memory, select Ultimum Ti metal material or its alloy material for use.

3. according to claim 1 or the described sacculus flip-over type of claim 2 self-expanding stent, it is characterized in that: described sacculus flip-over type self-expanding stent is selected the Ultimum Ti metal material for use.