CN2673332Y

CN2673332Y - Y type blood vessel carriage transfer system

Info

Publication number: CN2673332Y
Application number: CNU2004200193557U
Authority: CN
Inventors: 聂红林; 罗七一; 李莉; 杨海
Original assignee: Microport Medical Shanghai Co Ltd
Current assignee: Microport Medical Shanghai Co Ltd
Priority date: 2004-01-09
Filing date: 2004-01-09
Publication date: 2005-01-26
Anticipated expiration: 2014-01-09

Abstract

The utility model relates to a Y type blood vessel carriage transfer system, which comprises an inner pipe assembly, a middle pipe assembly and an outer pipe assembly, a branch guide wire assembly and related accessories. The inner blood vessel assembly is composed of a conical head, a near outer pipe, a near ejecting pipe and a far ejecting pipe which are fixedly connected. The middle pipe assembly is composed of a near middle pipe, a keeper, homo-lateral branch pipes, a connecting pipe, a far middle pipe as well as a middle pipe connector, a sealing ring, etc. which are fixedly connected. The outer pipe assembly is composed of a far outer pipe, an outer pipe connector and a sealing ring which are fixedly connected. The branch guide wire assembly is composed of the parts of opposite side branch pipes and branch guide wire. The four assemblies can freely move relatively to each other. A Y type stent is placed in an inner cavity, which comprises the parts as follows: the near outer pipe, the far outer pipe, the near middle pipe, the keeper, the homo-lateral branch pipes and the opposite side branch pipes. When the utility model is released, it is convenient to operate, with good controllability and little risk.

Description

Y type intravascular stent induction system

Technical field

It is that the intravascular stent of Y type is hindered the induction system that the intervention means are inserted human body by Wicresoft with structure that this utility model relates to a kind of.

Background technology

Owing to heredity or other certain reason, moving/the vein blood vessel of human body can produce multiple disease, wherein a part of disease can obtain medical treatment in the mode of diseased region implant frame or overlay film frame by using Wicresoft's interventional technique, as moving/phlebangioma, moving/venous fistula, moving/phlebostenosis etc., all may use less invasive techniques and treat.When above-mentioned pathological changes occurs in the intersection of branch of blood vessel, should use the whole Y type support similar to vascular morphology, perhaps straight type support and another the straight type support with a band side opening is assembled into a Y type support in vivo.How with whole Y type support safety, accurately implanting diseased region, is present relevant department, and especially Wicresoft's interventional technique field presses for the problem of solution.

Summary of the invention

This utility model technical issues that need to address are a kind of Y type intravascular stent induction systems of design, to satisfy the needs of relevant department.

The technical solution of the utility model:

Described Y type intravascular stent induction system, parts such as pipe assembly, intermediate tube assembly, outer tube assembly and branch component in comprising;

The pipe assembly comprises guider and liftout attachment in said, and guider is fixed on the front end of liftout attachment, and the nearly outer tube of fixedlying connected with guide head is used for the main body of suit Y type intravascular stent;

Said intermediate tube assembly is a tubular element, is enclosed within slidably on the liftout attachment, is used for fixing Y type intravascular stent;

Said outer tube assembly is enclosed within on the intermediate tube assembly slidably, is used for the branch of fluid infusion and suit Y type intravascular stent;

Said branch component comprises branch joint and be connected its vertical branch seal wire, and branch component is structurally separated fully with above-mentioned three assemblies, and branch joint is installed on the intermediate tube assembly when assemble with support, with integral body of above-mentioned three assemblies formation.

Characteristics of the present utility model are: be applicable to the conveying and the release of Y type intravascular stent, and easy to operate, safety, controllability is good, characteristics such as accurate positioning, risk are little.

Description of drawings

Fig. 1 is the rough schematic of Y type intravascular stent.

Fig. 2 is the structural representation of induction system.

Fig. 3 is the structural representation of the induction system behind the loading Y type intravascular stent.

The specific embodiment

Referring to Fig. 1, said Y type intravascular stent is made of main body 101 and first branch 102 and second branch 103.

Referring to Fig. 2 and Fig. 3, described Y type intravascular stent induction system, pipe assembly, intermediate tube assembly, outer tube assembly and branch component in comprising;

The pipe assembly comprises guider and liftout attachment in said, guider is fixed on the front end of liftout attachment, said guider comprises taper guide head 11 that is provided with through hole and the nearly outer tube 12 of fixedlying connected with it, and nearly outer tube 12 is used for the main part of suit Y type intravascular stent; Said liftout attachment comprises closely ejecting pipe 13, far ejecting pipe 14 and guiding breechblock 15 of being mutually permanently connected successively, closely ejects pipe 13 the other end and fixedlys connected with guide head 11, and be connected with said through hole;

Said intermediate tube assembly is enclosed within slidably closely to eject pipe 13 and far eject and manages on 14, this intermediate tube assembly comprises keeper 22, pipe 21 near, homonymy branch joint 23, pipe 24 in far away, middle pipe connections 25 and sealing ring 26, keeper 22 is fixed on the top of nearly middle pipe 21, pipe 24 is fixed on the other end of nearly middle pipe 21 in far away, homonymy branch joint 23 is fixed between middle pipe 24 far away and the keeper 22, and and keeper 22 between be provided with spacing, be used to settle said support, middle pipe connections 25 is connected the other end of middle pipe 24 far away, sealing ring 26 is arranged on its end, is used to prevent that the liquid of induction system inside from oozing dew from this;

Said outer tube assembly, it is a tubular element, be enclosed within outside the intermediate tube assembly slidably, be used for the branch of suit Y type intravascular stent and the fluid infusion in when operation, said outer tube assembly comprises the far ultraviolet pipe 31 that is enclosed within on the middle pipe 24 far away, the outer pipe connections 32 that is connected with far ultraviolet pipe 31, be arranged on the sealing ring 33 of outer pipe connections 32 ends, tube for transfusion 34 and valve 35 with the intracavity inter-connection of outer pipe connections 32, two branches of Y type intravascular stent all are sleeved in the far ultraviolet pipe 31, need additional liquid to enter the inner chamber of outer pipe connections 32 by tube for transfusion 34, enter in the cavity at Y type intravascular stent place, outside the air purge system with induction system inside by the cavity passage between far ultraviolet pipe 31 and the middle pipe 24 far away then.

Said branch component comprises branch joint 41 and is connected its vertical branch leads 42;

Said branch component is structurally separated fully with above-mentioned three assemblies, and only when assemble with support, branch casing 41 is installed in the spacing between side branch joint 23 and the keeper 22, with integral body of above-mentioned three assemblies formation.

The material of making each part of induction system is respectively: guide head 11, far eject pipe 14, keeper 22, far away in pipe 24 materials that can choose have: polyethylene (polyethylene), polrvinyl chloride (PVC), polyether block copolymer materials such as (pebax);

The material that nearly outer tube 12, far ultraviolet pipe 31 can be chosen has: polyvinyl fluoride (teflon, FEP, PFA etc.), polrvinyl chloride (PVC), polyethylene (polyethylene), polyether block copolymer materials such as (pebax);

Closely ejecting pipe 13 materials that can choose has: materials such as niti-shaped memorial alloy, NiTi superelastic alloy, stainless steel alloy;

The material that guiding breechblock 15, middle pipe connections 25, outer pipe connections 32, valve 35 can be chosen has: acrylonitrile-butadiene-styrene copolymer (ABS), polyether block copolymer (pebax), Merlon (polycarbonate), nylon (Nylon), materials such as polyurethane (polyurethane), stainless steel alloy;

In near there be pipe 21 materials that can choose: polyethylene (polyethylene), polypropylene (Polypropylene), polyimide (Polyimide), polyamide (polyamide), polyether block copolymer (pebax) nylon (Nylon), polyurethane materials such as (polyurethane);

The material that homonymy branch joint 23, offside branch joint 41 can be chosen has: polyvinyl fluoride (teflon, FEP etc.), polyethylene (polyethylene), polyether block copolymer materials such as (pebax);

The material that sealing

ring

26,33 can be chosen has: nylon (Nylon), polyurethane (polyurethane), silica gel (silicone), natural rubber materials such as (caoutchouc); The material that tube for transfusion 34 can be chosen has: polrvinyl chloride (PVC), polyethylene (polyethylene), nylon (Nylon), silica gel materials such as (silicone);

The material that branch's seal wire 42 is chosen is nickel-titanium shape memory/superelastic alloy; Described Y type intravascular stent induction system adapts to Y type intravascular stents dissimilar, different compression diameters, the system's external diameter that can select between 12-24Fr (1mm=3Fr), as 12Fr, 14Fr, 16Fr, 18Fr, 20Fr, 22Fr, 24Fr etc.; The length range of system is between 300-1200mm.

Operation principle of the present utility model is as follows:

Each component part of interior pipe assembly, intermediate tube assembly, outer tube assembly and the branch component of induction system is fixedly connected respectively, has a subsystem respectively of one's own; Wherein, can slide relatively between interior pipe assembly, intermediate tube assembly and the outer tube assembly, branch component is assembled in the far ultraviolet pipe 31 when packing Y type support in induction system.Constitute by main body 101 and first branch 102 and second branch 103.

When Y type support is installed, from guide head 11 ends of induction system, Y type support is enclosed within on the nearly middle pipe 21 since first branch, 102 ends, the main body 101 of support is towards guide head 11 1 ends of induction system; First branch 102 of support is compressed in the homonymy branch joint 23, second branch 103 is compressed in the offside branch joint 41; Fixedly the position of intermediate tube assembly 2 is motionless, and interior pipe assembly 1 is spurred left, and the main body with support is compressed in the nearly outer tube 12 simultaneously; Fixedly the position of intermediate tube assembly 2 is motionless, outer tube assembly 3 is promoted to the right, homonymy branch joint 23 and offside branch joint 41 are compressed in the far ultraviolet pipe 31 together, keep offside seal wire 42 to be positioned at the outside of nearly outer tube 12 and far ultraviolet pipe 31, and make nearly outer tube 12 overlap a little with far ultraviolet pipe 31.

For the Y type support that will be compressed in the induction system is released in diseased region, hinder the interventional therapy means below in conjunction with the Wicresoft of abdominal aortic aneurysm, the use principle of induction system is described.

Bilateral femoral arterial patient is dissected respectively, branch's seal wire 42 is separated groove from a side send into, and separates groove from offside and pulls out;

Induction system is separated groove along homonymy send into diseased region, then outer tube assembly 3 is pulled outwardly.At this moment, homonymy branch joint 23 and offside branch joint 41 all are released in the blood vessel.The operation induction system makes the main body of Y type support be positioned at ventral aorta, and two branches lay respectively in the left and right common iliac artery.

Branch's seal wire 42 is drawn to external, external up to pulling out fully, be about to second branch 103 and be released in the common iliac artery blood vessel.

Keep other assemblies motionless, interior pipe assembly is pushed away in body, up to extreme position.The main part that be about to Y type support this moment is released in the ventral aorta.

Interior pipe assembly is drawn to external, discharge first branch 102 of Y type support fully;

At this moment, Y type support is released in the lesion vessels fully.

All pull out induction system external.At this moment, the repertoire of induction system is finished.

Claims

1. a Y type intravascular stent induction system is managed assembly, intermediate tube assembly, outer tube assembly and branch component in it is characterized in that comprising, said interior pipe assembly comprises guider and liftout attachment, and guider is fixed on the front end of liftout attachment; Said intermediate tube assembly is enclosed within on the liftout attachment slidably, is used for fixing Y type intravascular stent; Said outer tube assembly is enclosed within on the intermediate tube assembly slidably; Said branch component comprises branch joint and is connected its vertical branch seal wire that branch joint is installed on the intermediate tube assembly when assembling with support.

2. Y type intravascular stent induction system according to claim 1, it is characterized in that, said guider comprises taper guide head (11) that is provided with through hole and the nearly outer tube (12) of fixedlying connected with it, and nearly outer tube (12) is used for the main body of suit Y type intravascular stent; Said liftout attachment comprises closely ejecting pipe (13) and far ejecting pipe (14) of being mutually permanently connected successively, and the other end that closely ejects pipe (13) is fixedlyed connected with guide head (11), and is connected with said through hole.

3. Y type intravascular stent induction system according to claim 1, it is characterized in that, said intermediate tube assembly is enclosed within slidably and closely ejects pipe (13) and far eject on the pipe (14), this intermediate tube assembly comprises keeper (22), pipe (21) near, homonymy branch joint (23), pipe (24) in far away, middle pipe connections (25) and sealing ring (26), keeper (22) is fixed on the top of nearly middle pipe (21), pipe (24) is fixed on the other end of nearly middle pipe (21) in far away, homonymy branch joint (23) is fixed between middle pipe far away (24) and the keeper (22), and and keeper (22) between be provided with spacing, middle pipe connections (25) is connected the other end of middle pipe far away (24), and sealing ring (26) is arranged on its end.

4. Y type intravascular stent induction system according to claim 6, it is characterized in that, said outer tube assembly comprise be enclosed within far away in far ultraviolet pipe (31), the outer pipe connections (32) that is connected with far ultraviolet pipe (31), the sealing ring (33) that is arranged on outer pipe connections (32) end, and the tube for transfusion (34) and the valve (35) of the intracavity inter-connection of outer pipe connections (32) on the pipe (24), far ultraviolet pipe (31) is used for two branches of suit Y type intravascular stent.

5. Y type intravascular stent induction system according to claim 1, it is characterized in that, said branch component comprises branch joint (41) and is connected its vertical branch seal wire (42), branch component is when assembling with support, branch joint (41) is installed in the spacing between side branch joint 23 and the keeper 22, constitutes an integral body with above-mentioned three assemblies.

6. Y type intravascular stent induction system according to claim 2 is characterized in that, the end that far ejects pipe (14) is provided with guiding breechblock (15).