CN200966659Y

CN200966659Y - Wedge-shaped frame of bifurcation blood vessels

Info

Publication number: CN200966659Y
Application number: CNU2006201162697U
Authority: CN
Inventors: 陈纪林; 蒲忠杰; 王建平
Original assignee: Lepu Medical Technology Beijing Co Ltd
Current assignee: Lepu Medical Technology Beijing Co Ltd
Priority date: 2006-06-07
Filing date: 2006-06-07
Publication date: 2007-10-31
Anticipated expiration: 2016-06-07

Abstract

The utility model relates to a wedge shaped stand used for treating the pathological changes at the branched position of the blood vessel. This stand comprises the cylinder-like stand frame, which is reticulatus and adopts self- expanding type or sacculus expanding type. The stand frame is provided with the photographic developing mark which is used for the positioning of the branched position of the blood vessel. The said stand frame shall be provided with at least one wedge shaped end which has the photographic developing mark. For this utility model, the plane design in the traditional stand is given up, so as to be in mesh with the branched position. In this case, the stand could fully cover the pathological changes of the branched position. Also, the overlapping with the main blood vessel stand could be avoided. The photographic developing mark is available on the branched stand so as to facilitate the positioning and the operation. The wedge shaped end of the stand is controlled via such methods as buckling and tying, so that the wedge shaped stand will not be separated from the instrument conveyer during 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 end, 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 branch vessel near-end pathological changes is not covered fully by intravascular stent 1; (b) cover fully for branch vessel 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, reaming on the branch vessel support then.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 the netted cylinder stent body of self expandable formula or balloon expandable formula, rack body is provided with that to cooperate localized development labelling, described rack body to have an end at least with the bifurcation blood vessel be the wedge type end that has the development labelling.

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

The wedge type end development labelling of described rack body is at least a place, is the point, line, surface shape.

Tip, the root of the wedge type end of described rack body are respectively arranged with the development labelling, the relative both sides of slotted opening of separation rack body.

The opening both sides of described rack body are provided with at least one group of hasp.

Described hasp is the double buckle structure, ZIKOU and box separation opening both sides, and the snapping place is in-line, circle, ellipse.

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.

Described development labelling is selected for use has good biocompatibility and not saturating X ray characteristic material, as gold, platinum, tungsten, tantalum metal and alloy material thereof, perhaps other macromolecular materials.

Described development is labeled as the proper constituent of rack body self, or selects for use and have excellent biological compatibility and saturating X ray characteristic material, by inlay, socket, be coated with, the plating mode is attached on the rack body.

The positive beneficial effect that this utility model had:

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

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 means such as hasps, bondage, avoids that the wedge type end support separates with delivery instrument 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) are existing intravascular stent implantable intravascular bifurcation sketch map;

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 a B portion enlarged drawing among Fig. 4;

Fig. 7 (a) and (b), (c) are hasp structure sketch map of the present utility model;

Fig. 8 (a) and (b), (c) are this utility model support implantable intravascular bifurcation sketch map;

Fig. 9 is a development labelling mosaic texture sketch map of the present utility model;

Figure 10 is a development labelling socket join structure sketch map of the present utility model.

The specific embodiment

Consult Fig. 4, Fig. 5, shown in Figure 6, 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 of rack body 1 is the wedge type end, the wedge type end is provided with axial slotted opening 101, described opening 101 contrate wheel profiles can be straight line or rule, irregular curve, and the size of opening 101, length and shape are determined according to the one-tenth angle situation at vascular bifurcation position and size characteristic etc. are comprehensive; Location for convenience of operation process medium-height trestle body 1, wedge type end at rack body 1 is provided with a place or many places development labelling 2, can be at the tip of wedge type end, root is respectively arranged with development labelling 201,202, the relative both sides of slotted opening 101 of separation rack body 1, or be arranged on other contiguous position of wedge type end, also can be provided with a place or many places development labelling simultaneously in other optional positions of rack body 1, the development labelling can point, line, various ways settings such as face, the angle and the position of rack body 1 implantable intravascular bifurcation is convenient to determine accurately in the location that cooperates that is used for wedge type end support and bifurcation blood vessel, development labelling; In addition, both sides, opening 101 position at the wedge type end are provided with one or more groups hasp 102, realize constraint wedge type support by methods such as hasp 102 or employing bondages, support can be adjacent on delivery instrument before expansion, avoid the wedge type end of operation process medium-height trestle body 1 to separate with delivery instrument.

Consult shown in Fig. 7 (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 oval; Hasp 102 lockings when rack body 1 pressure is held on the delivery instrument, primary and secondary hasp 102 breaks away from automatically when rack body 1 expansion.

Consult shown in Fig. 8 (a) and (b), (c), in the operation process of this utility model implantable intravascular bifurcation, (a) adjusts rack body 1 to suitable position and angle by development labelling 201,202 among the figure, use sacculus 3 expandable stent bodies 1 then, make opening 101 end profile just and vascular bifurcation openings in blood vessels position be complementary, wedge type rack body 1 can cover the pathological changes at vascular bifurcation position fully at this moment, can not be projected in the main blood vessel again simultaneously; (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 9ly, described development labelling 2 can be embedded in the rack body 1.

Consult shown in Figure 10ly, 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 is the proper constituent of rack body 1 self, or selects for use and have excellent biological compatibility and saturating X ray characteristic material, by inlay, socket, be coated with, mode such as plating is attached on the rack body 1.

Described bifurcated vessels wedge type support can be self expandable formula or balloon expandable stent.

Described rack body 1 optional usefulness has the material of excellent biological compatibility and support force, as multiple metal, alloy material or degradable, nondegradable macromolecular materials etc. such as 316L medical stainless steel, nickel-base alloy, cobalt-base alloys, marmems.

Described development labelling 2 optional usefulness have good biocompatibility and not saturating X ray characteristic material, as metal and alloy materials thereof such as gold, platinum, tungsten, tantalums, or other nonmetallic materials, or other macromolecular material.

Claims

1. bifurcated vessels wedge type support, comprise the netted cylinder stent body of self expandable formula or balloon expandable formula, rack body is provided with the bifurcation blood vessel and cooperates localized development labelling, it is characterized in that described rack body (1) has an end at least for having the wedge type end of development labelling (2).

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 slotted opening (101), and opening (101) contrate wheel profile is straight line or rule, irregular curve.

3. bifurcated vessels wedge type support according to claim 1 is characterized in that the wedge type end development labelling (2) of described rack body (1) is at least a place, is the point, line, surface shape.

4. bifurcated vessels wedge type support according to claim 1, the tip, the root that it is characterized in that the wedge type end of described rack body (1) are respectively arranged with development labelling (201), (202), the relative both sides of slotted opening (101) of separation rack body (1).

5. bifurcated vessels wedge type support according to claim 2 is characterized in that opening (101) both sides, position of described rack body (1) are provided with at least one group of hasp (102).

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

7. bifurcated vessels wedge type support 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.

8. bifurcated vessels wedge type support according to claim 1, it is characterized in that described development labelling (2) selects for use and have good biocompatibility and saturating X ray characteristic material, as gold, platinum, tungsten, tantalum metal and alloy material thereof, perhaps other macromolecular materials.

9. bifurcated vessels wedge type support according to claim 1, it is characterized in that described development labelling (2) is the proper constituent of rack body (1) self, or select for use and have excellent biological compatibility and saturating X ray characteristic material, by inlay, socket, be coated with, the plating mode is attached on the rack body (1).