CN2920187Y

CN2920187Y - Bifurcation blood vessels wedge stent

Info

Publication number: CN2920187Y
Application number: CNU2006201133980U
Authority: CN
Inventors: 陈纪林; 王建平; 蒲忠杰
Original assignee: Lepu Medical Technology Beijing Co Ltd
Current assignee: Lepu Medical Technology Beijing Co Ltd
Priority date: 2006-04-30
Filing date: 2006-04-30
Publication date: 2007-07-11
Anticipated expiration: 2016-04-30

Abstract

The utility model relates to a bifurcation blood vessels wedge stent for the therapy on pathological changes of the blood vessel bifurcation. The utility model comprises a stent reality whose one end is a flat dapper end, and the other end of the stent reality is a sphenoid end. The stent reality gets rid of the structural design of two identical ends and is matched with the bifurcation canal cavity. The wedge stent can not only completely cover pathological changes of the blood vessel bifurcation but also not result in the overlapping with the main blood vessel stent. Furcate stents are provided with developable marks, which is convenient for positioning and for the work of an operation. The wedge end of the stent is restricted by a hook loop and a binding, which avoids the separation of the wedge-end stent from a ball saccus in the operation.

Description

Bifurcated vessels wedge type support

Technical field

This utility model belongs to and imposes on the intravital instrument field of flesh, relates to a kind of bifurcated vessels wedge type support that is applied to vascular bifurcation position lesions treatment.

Background technology

Known intravascular stent mostly is the netted cylindrical structure that head and the tail are even, shape is consistent, as shown in Figure 1, the intravascular stent 1 of this structure is confined to the treatment of single vessel disease, because its two ends are concordant, for the common pathological changes c that occurs in main 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 has enumerated the deficiency of using existing intravascular stent 1 to exist in the operation technique of vascular bifurcation position, wherein (a) is that bifurcated vessels near-end pathological changes is not covered fully by intravascular stent 1; (b) cover fully for the near-end pathological changes, but intravascular stent 1 end too much be projected into main blood vessel, the operation of main blood vessel is brought inconvenience; (c), (d) is that Crush is to the kiss technology, earlier intravascular stent in the branch vessel 1 is expanded, stay a part at main blood vessel, the support that will be reserved in main blood vessel then expands, simultaneously an end of branch vessel support is squeezed to and is close to main blood vessel wall, this Crush is to kiss technical operation more complicated, and support lap A place forms thrombosis easily.

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, and provide a kind of operation technique of being convenient to, can fully cover the pathological changes at vascular bifurcation position, to reach the bifurcated vessels wedge type support of good therapeutic effect.

The technical solution adopted in the utility model: a kind of bifurcated vessels wedge type support, comprise rack body, an end of its rack body is concordant end, the other end is the wedge type end.

The wedge type end of described rack body is provided with a slotted opening, and the open end contour line is straight line or irregular curve.

The wedge type end of described rack body is provided with the development labelling.

The opening of described rack body is provided with hasp.

Described hasp is the double buckle structure, ZIKOU and box separation opening both sides, and it is circular or oval that the snapping place is approximately in-line.

The concordant end of described rack body is provided with the development labelling.

Described development labelling is inlayed, is socketed on the rack body.

Described development labelling selects for use gold, platinum, tungsten, tantalum material to be coated with, to be plated on the rack body.

The positive beneficial effect that this utility model had:

1. abandon the two ends flush configuration design of support in the past, support one end is designed to taper structure, be complementary, make support both can cover the pathological changes at vascular bifurcation position fully, can not cause overlapping with main intravascular stent again with the bifurcation tube chamber;

2. bifurcated stent is provided with the development labelling, can be in the operation process according to development labelling swinging mounting to suitable angle, and expandable stent is conveniently located then, is convenient to operation technique;

3. the wedge type end of support is realized constraint by hasp, bondage, avoids that the wedge type end support separates with sacculus in the operation process;

4. simple in structure, easy to use, improve therapeutic effect, be applicable to the treatment of various vascular bifurcations position pathological changes.

Description of drawings

Fig. 1 is existing intravascular stent structural representation;

Fig. 2 is a vascular bifurcation position pathological changes sketch map;

Fig. 3 (a) and (b), (c), (d) apply vascular bifurcation position sketch map for existing intravascular stent;

Fig. 4 is this utility model structural representation;

Fig. 5 is this utility model structure expansion state sketch map;

Fig. 6 (a) and (b), (c) are hasp structure sketch map of the present utility model;

Fig. 7 (a) and (b), (c) apply vascular bifurcation position sketch map for this utility model support;

Fig. 8 is a development labelling mosaic texture sketch map of the present utility model;

Fig. 9 is a development labelling socket join structure sketch map of the present utility model.

The specific embodiment

Consult Fig. 4, shown in Figure 5, a kind of bifurcated vessels wedge type support comprises rack body 1, development labelling 2 etc.; Its rack body 1 is netted cylindrical structure, one end is concordant end, the other end is the wedge type end, the wedge type end is provided with a slotted opening 101, the axis angle of described opening 101 end faces and rack body 1 is less than 90 degree, opening 101 contrate wheel profiles can be straight line or irregular curve, the size of opening 101, length, and shape determine according to the one-tenth angle situation at vascular bifurcation position and the combined factors such as diameter of bifurcated vessels; Location for convenience of operation process medium-height trestle body 1, the wedge type end of rack body 1 is provided with one or more development labellings 2, as other position at top, afterbody or the wedge type end of wedge type end, concordant end that also can rack body 1 is provided with one or more development labellings 2, and development labelling 2 is convenient to determine accurately that rack body 1 applies the angle and the position at vascular bifurcation position; The opening 101 of wedge type end is provided with hasp 102, by the method realization constraint wedge type support of hasp 102 or employing bondage, avoids the wedge type end of operation process medium-height trestle body 1 to separate with sacculus.

Described rack body 1 optional usefulness has the material of excellent biological compatibility and support force, as multiple metal material or degradable or nondegradable macromolecular materials etc. such as 316L medical stainless steel, nickel-base alloy, cobalt-base alloys, marmems.Described development labelling 2 optional usefulness have materials such as the gold, platinum, tungsten, tantalum of good biocompatibility and developing property.

Consult shown in Fig. 6 (a) and (b), (c), described hasp 102 is the double buckle structure, ZIKOU and box branch occupy opening 101 both sides, are the T-shape shape behind the snapping, the snapping place can as figure (a) be approximately in-line or as figure (b) is approximately circular or as figure (c) be approximately ovalize; Hasp 102 lockings when the rack body pressure is held on the sacculus, hasp 102 is opened when rack body is expanded.

Consult shown in Fig. 7 (a) and (b), (c), this utility model is applied in the operation process of vascular bifurcation position, (a) at first is the proper angle of determining rack body 1 by development labelling 2 among the figure, use sacculus 3 inflatable dilatation rack bodies 1 then, opening 101 end faces just are complementary with vascular bifurcation position tube chamber, and wedge type rack body 1 can cover the pathological changes at vascular bifurcation position fully at this moment; (b) withdraws from sacculus 3 among the figure, implants traditional support at main blood vessel as required; (c) is that wedge type rack body 1 can not cause overlapping with main intravascular stent among the figure.

Consult shown in Figure 8ly, described development labelling 2 can be embedded in the rack body 1.

Consult shown in Figure 9ly, described development labelling 2 is a hollow cylinder, is socketed on the network structure draw-in groove 103 of rack body 1.

Described development labelling 2 also can adopt materials such as gold, platinum, tungsten, tantalum to be coated with, to be plated on the rack body 1.

Claims

1. a bifurcated vessels wedge type support comprises rack body, and an end that it is characterized in that rack body (1) is concordant end, and the other end is the wedge type end.

2. bifurcated vessels wedge type support according to claim 1 is characterized in that the wedge type end of described rack body (1) is provided with a slotted opening (101), and opening (101) contrate wheel profile is straight line or irregular curve.

3. bifurcated vessels wedge type support according to claim 1 is characterized in that the wedge type end of described rack body (1) is provided with development labelling (2).

4. bifurcated vessels wedge type support according to claim 2 is characterized in that the opening (101) of described rack body (1) is provided with hasp (102).

5. bifurcated vessels wedge type support according to claim 4 is characterized in that described hasp (102) is the double buckle structure, ZIKOU and box separation opening (101) both sides, and it is circular or oval that the snapping place is approximately in-line.

6. bifurcated vessels wedge type support according to claim 1 is characterized in that the concordant end of described rack body (1) is provided with development labelling (2).

7. according to claim 3 or 6 described bifurcated vessels wedge type supports, it is characterized in that described development labelling (2) inlays, is socketed on the rack body (1).

8. according to claim 3 or 6 described bifurcated vessels wedge type supports, it is characterized in that described development labelling (2) selects for use gold, platinum, tungsten, tantalum material to be coated with, to be plated on the rack body (1).