CN201042472Y

CN201042472Y - Bifurcate blood vessel opening bracket

Info

Publication number: CN201042472Y
Application number: CNU2007201477808U
Authority: CN
Inventors: 陈绍良
Original assignee: Nanjing Yada Jia Culture Media Co Ltd; Lepu Medical Technology Beijing Co Ltd
Current assignee: Lepu Medical Technology Beijing Co Ltd
Priority date: 2007-04-28
Filing date: 2007-04-28
Publication date: 2008-04-02
Anticipated expiration: 2017-04-28

Abstract

The utility model relates to a branched blood vessel opening stand which includes a stand body and developing marks. The stand body is a capsule-expanding network cylinder. The developing marks are arranged at two ends of the stand body and matched with blood vessel at the branched part for positioning. The stand body includes a far end, a middle section and a near end. The stand body is divided into three sections, one developing mark is arranged at each end of the middle section, and no rotation of the stand body is needed during operation according to the developing marks on two ends of the stand body and on two ends of the middle section to reduce risk of stand deloading. The middle section is in the shape of branched opening and is composed of three metal wires in sine wave shape, which cannot block opening of stem blood vessel. The utility model has the advantages of simple structure, convenient application, greatly improved treating effect, and suitability for interventional therapy of pathological changes on various branched blood vessel parts.

Description

The bifurcated vessels open stand

Technical field

This utility model belongs to and imposes on the intravital instrument field of flesh, relates to a kind of bifurcated vessels open stand that is applied to vascular bifurcation position pathological changes interventional therapy.

Background technology

Known intravascular stent belongs to the netted cylindrical-shaped structure of head and the tail homogeneous, shape unanimity, as shown in Figure 1, the intravascular stent of this structure is only limited to the interventional therapy of single vessel disease, because its two ends are concordant end, for the common pathological changes c that occurs in major blood vessel a and branch vessel b bifurcation, as shown in Figure 2, then can't be fully, cover effectively, influence therapeutic effect.Fig. 3 (a) and (b), (c), (d) have enumerated the deficiency of using existing support to exist in the operation technique of bifurcation, wherein (a) do not covered by intravascular stent fully for branch vessel near-end pathological changes; (b) covered fully by support for branch vessel near-end pathological changes, but too much the protruding in the major blood vessel of intravascular stent near-end causes potential harm to major blood vessel; (c), (d) is extruding (crush) art formula, after earlier the support in the branch vessel being expanded, there is 3～5m to protrude in the major blood vessel, after will being retained in the support expansion in the major blood vessel then in advance, branch's support that will protrude into simultaneously in the major blood vessel is expressed on the major blood vessel wall, and the side opening by the major blood vessel support enters into and carries out once more in the branch vessel the kiss expansion at last.Just there is the three-layer metal girder steel in near-end in the bifurcation like this, and by the irregular eclipsed metal girder steel of weedy multilamellar, is difficult to realize final kiss is expanded, and causes restenosis rate and thromboembolism rate significantly to increase.

Summary of the invention

The purpose of this utility model is to overcome the deficiency that existing intravascular stent can't cover vascular bifurcation position pathological changes fully effectively, and provide a kind of operation technique of being convenient to, can fully cover the pathological changes at vascular bifurcation position, reach the bifurcated vessels open stand of good therapeutic effect.

The technical solution adopted in the utility model: a kind of bifurcated vessels open stand, comprise rack body, development labelling, its rack body is the netted cylinder of inflation type, the two ends of rack body are provided with vascular bifurcation position blood vessel and cooperate localized development labelling, and described rack body comprises far-end, interlude, near-end.

The far-end of described rack body is netted cylinder, and interlude is a bifurcated opening shape that is made of the tinsel of three sinusoidal wave formulas, and near-end is cylindric continuous structure.

The interlude two ends of described rack body are provided with the development labelling.

Described development is labeled as the point, line, surface shape, by socket, inlay, be coated with, plate attached on the rack body.

Described development labelling material is the proper constituent of rack body self, or has the material of excellent biological compatibility and not saturating X ray characteristic.

Described rack body is selected the material with good biocompatibility and support force for use, as 316L medical stainless steel, nickel-base alloy, cobalt-base alloys, marmem metal material and alloy material thereof or degradable or nondegradable macromolecular material.

The positive beneficial effect that this utility model had:

1. the two ends flush configuration design of abandoning tradition support, rack body is divided into three sections, the interlude two ends respectively are provided with a development labelling, can be according to the development labelling at rack body two ends and support interlude two ends, do not need the runing rest body when operating in the art, thereby reduced support and taken off the risk of carrying;

2. interlude is the bifurcated opening shape that the tinsel by three sinusoidal wave formulas constitutes, and can not stop up the opening of major blood vessel;

3. simple in structure, easy to use, significantly improve therapeutic effect, be applicable to the pathological changes interventional therapy at various vascular bifurcations position.

Description of drawings

Fig. 1 is existing intravascular stent structural representation;

Fig. 2 is a bifurcated vessels position pathological changes sketch map;

Fig. 3 (a) and (b), (c), (d) are implanted to bifurcated vessels position sketch map for existing intravascular stent;

Fig. 4 is the front view of this utility model structural representation;

Fig. 5 is the upward view of this utility model structural representation;

Fig. 6 is an I portion enlarged diagram among Fig. 4;

Fig. 7 (a) and (b), (c) are implanted to vascular bifurcation position sketch map for this utility model.

The specific embodiment

Consult Fig. 4, Fig. 5, shown in Figure 6, a kind of bifurcated vessels open stand belongs to the netted cylindric rack body of inflation type, mainly comprises rack body 1, development labelling 2 etc.; Its rack body 1 is selected the material with good biocompatibility and support force for use, as 316L medical stainless steel, nickel-base alloy, cobalt-base alloys, marmem metal material and alloy material thereof or degradable or nondegradable macromolecular material, development labelling 2 can be the proper constituent of rack body 1 self, also can select material for use with excellent biological compatibility and not saturating X ray characteristic, development labelling 2 is the point, line, surface shape, described development labelling 2 can by socket inlay or be coated with, electroplating method is attached on the rack body 1.

The two ends of described rack body 1 respectively are provided with one and cooperate localized development labelling 201 with vascular bifurcation position blood vessel, 202, be convenient to rack body 1 location, rack body 1 constitutes by three sections, comprise far-end 101, interlude 102, near-end 103, these three sections is the seriality structure, rather than segmental structure is synthetic, the far-end 101 of rack body 1 and the metal rack structural similarity that uses at present, be netted cylindrical structure, the interlude 102 of rack body 1 is a bifurcated opening shape that is made of the tinsel of three sinusoidal wave formulas, length is about 4mm, it plays a part to connect near-end 103 and far-end 101, respectively be provided with a development labelling 203 at the two ends of interlude 102,204, be convenient to locate in the art, the structure of interlude 102 has avoided conventional stent designs to block the side effect of major blood vessel, thereby safety and the success rate of operation have been significantly improved, the near-end 103 of rack body 1 is the cylindric continuous structure of length 1mm, effect is the fixing relative position of interlude 102 3 one metal wire near-ends, anti-anti-avulsion is carried or is twined, during rack body 1 location, near-end 103 just in time is positioned at the major blood vessel before the bifurcated, has guaranteed that rack body 1 can not take off to carry in the process of carrying.

Consult shown in Fig. 7 (a) and (b), (c), (a), the near-end 103 of rack body 1 is positioned at major blood vessel; The development labelling 203 of interlude 102 far-ends of rack body 1 is aimed at the bifurcated vessels openings; The development labelling 204 of near-end is aimed at the near-end crotch of bifurcated vessels and major blood vessel; After above-mentioned support position fixing process finishes, expanding stent body 1, this moment, near-end 103 was close to main blood vessel wall; (b), the mounting system in the major blood vessel is successively passed the near-end 103 of bifurcated stent and the opening of interlude 102, guarantee that main intravascular stent can cover bifurcated vessels opening part pathological changes; (c), the main intravascular stent that expands, recall sacculus.

Claims

1. bifurcated vessels open stand, comprise rack body, development labelling, its rack body is the netted cylinder of inflation type, the two ends of rack body are provided with vascular bifurcation position blood vessel and cooperate localized development labelling, it is characterized in that described rack body (1) comprises far-end (101), interlude (102), near-end (103).

2. bifurcated vessels open stand according to claim 1, the far-end (101) that it is characterized in that described rack body (1) is netted cylinder, interlude (102) is a bifurcated opening shape that is made of the tinsel of three sinusoidal wave formulas, and near-end (103) is cylindric continuous structure.

3. bifurcated vessels open stand according to claim 1 is characterized in that interlude (102) two ends of described rack body (1) are provided with development labelling (203), (204).

4. according to claim 1 or 3 described bifurcated vessels open stand, it is characterized in that described development labelling (2) is the point, line, surface shape, by socket, inlay, be coated with, plate attached on the rack body (1).

5. according to claim 1 or 3 described bifurcated vessels open stand, it is characterized in that described development labelling (2) material is the proper constituent of rack body (1) self, or have the material of excellent biological compatibility and not saturating X ray characteristic.

6. bifurcated vessels open stand according to claim 1, it is characterized in that described rack body (1) selects the material with good biocompatibility and support force for use, as 316L medical stainless steel, nickel-base alloy, cobalt-base alloys, marmem metal material and alloy material thereof or degradable or nondegradable macromolecular material.