CN206342571U

CN206342571U - A kind of loading can withdraw branch's protection intravascular stent system of conduit

Info

Publication number: CN206342571U
Application number: CN201620897604.5U
Authority: CN
Inventors: 苗立夫
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-08-17
Filing date: 2016-08-17
Publication date: 2017-07-21
Anticipated expiration: 2026-08-17

Abstract

The branch that can withdraw conduit the utility model discloses a kind of loading protects intravascular stent system, including main branch support, main branch release sacculus, main branch delivery conduit and for protecting branch vessel, conveying branch protection seal wire to withdraw conduit；Main branch release sacculus is arranged on main branch delivery conduit, and main branch support is coated on the lateral surface of main branch release sacculus；The distal section that conduit can be withdrawn is arranged in main branch support and between main branch support and main branch release sacculus；The distal section that conduit can be withdrawn is pressed against on the spacing beam of main branch support and port at the support mesh that spacing beam participates in composition.The utility model protects seal wire to establish a protection seal wire path through support mesh between main branch vessel and branch vessel by that can withdraw conduit and branch, so that branch's protection seal wire passes through support mesh into the difficult operation of branch vessel when avoiding branch vessel oral area Serious Stenosis after the main branch support release of processing.

Description

A kind of loading can withdraw branch's protection intravascular stent system of conduit

Technical field

The utility model is related to medical intervention consumptive material technical field, more particularly to a kind of loading can withdraw the branch guarantor of conduit Protect intravascular stent system.

Background technology

Hemadostewnosis, occlusion are the diseases of a kind of high disability rate and high mortality.It is hard for vascular diseases especially artery Change, narrow and occlusive disease, intravascular Interventional Treatment and stent implantation technique are one of main treatment methods.Stenter to implant skill Art is that through induction system support is reached into diseased region, then stretched to extrude patch to extravascular and expand the straight of inner chamber Footpath, the purpose for supporting tube chamber and reaching treatment hemadostewnosis.

Clinically quite a few hemadostewnosis, Occlusion involve vascular bifurcation, and it uses balloon expandable and support During implantation, bifurcated spine and with stenotic lesion displacement branch vessel oral area can be caused narrow or even occlusion, cause branch vessel to supply The ischemic of haemal tissue and cause serious adverse consequences clinically.On current interventional technique, protected using branch vessel oral area seal wire Two kinds of methods of shield technology and double bracket technology are to prevent this complication.

Branch vessel oral area seal wire protection technique places seal wire or sacculus within branch before the release of main branch support Technology.Because protection seal wire and sacculus are in main branch bracket outer, when causing the branch vessel oral area be damaged after main branch support release, need Seal wire is sent through main branch support mesh to branch vessel distal end, and then pushes sacculus even branch stent to enter in branch vessel oral area The implantation of row balloon dilatation and stenting is reconstructed with the negativity for improving branch vessel oral area.Double bracket technology is in main branch and branch vessel Each Stent Implantation is to ensure array of surgical method that branch vessel blood flow is unobstructed.Above-mentioned technical operation is relative complex, difficulty, seal wire Need to deliver to branch vessel completion sacculus to kiss art by individual layer even three layers of supporting structure.Merge calcification, tortuous, main in blood vessel Branch-branch vessel angle is excessive or too small, branch's oral area Serious Stenosis even occlusion when, seal wire is again introduced into branch's blood Pipe is extremely difficult, and seal wire can not enter the follow-up bifurcated balloon expansion of branch vessel development and stent in the treatment by supporting structure, It is to influence bifurcated lesions success rate, bring the main cause of serious bad clinical events.

Utility model content

Weak point present in regarding to the issue above, the branch that the utility model provides a kind of loading and can withdraw conduit is protected Protect intravascular stent system.

To achieve the above object, the utility model provides the protection intravascular stent system of branch that a kind of loading can withdraw conduit System, is placed in vascular bifurcation position, and the vascular bifurcation position includes main branch vessel and the branch vessel connected with main branch vessel；Bag Include main branch support, main branch release sacculus, main branch delivery conduit and protect returning for seal wire for protecting branch vessel, conveying branch Remove conduit；

The main branch support is the ring mesh structure with support mesh being made up of multiple rack beams；

The main branch release sacculus is arranged on the main branch delivery conduit, and the main branch support is coated on the main branch and released Put on the lateral surface of sacculus；

The distal section for withdrawing conduit is arranged in main branch support and between main branch support and main branch release sacculus；

The distal section for withdrawing conduit is pressed against on the spacing beam of the main branch support and port is located at the spacing beam At the support mesh for participating in composition, the rack beams of branch mid-stent based on the spacing beam.

As further improvement of the utility model, the distal section for withdrawing conduit is marked provided with impermeable X-ray.

As further improvement of the utility model, the conduit that withdraws is integral type design of material or sectional connected The tubular structure of design or braider winding enhancement layer design.

As further improvement of the utility model, it is described withdraw conduit internally and/or externally be provided with hydrophilic polymeric Thing coating.

Compared with prior art, the beneficial effects of the utility model are：

A kind of loading disclosed in the utility model can withdraw branch's protection intravascular stent system of conduit, by main branch branch Conduit can be withdrawn by being set between frame and main branch release sacculus, via can withdraw conduit by branch before main branch support discharges and is implanted into Seal wire feeding is protected to need in branch vessel to be protected, branch protects seal wire to expand after support release as protection track carrying Open sacculus and support completes the narrow follow-up treatment of branch vessel oral area, it is easy to operate；Avoid branch's protection in the prior art Seal wire passes through the difficult operation of support mesh, be branch vessel oral area provide convenience, the protection method of safety.

Brief description of the drawings

Fig. 1 is that a kind of disclosed load of embodiment of the utility model can withdraw branch's protection intravascular stent system of conduit Structure chart；

Fig. 2 to Fig. 4 is to load that branch's protection intravascular stent of conduit can be withdrawn disclosed in a kind of embodiment of the utility model The operation chart that system is applied in the blood vessels.

In figure：

101st, main branch vessel；102nd, branch vessel；103rd, main branch support；104th, main branch release sacculus 105, the conveying of main branch are led Pipe；106th, conduit can be withdrawn；107th, the support mesh where catheter tip can be withdrawn；108th, spacing beam；109th, impermeable X-ray mark Note；110th, main branch seal wire；111st, branch's protection seal wire；112nd, bifurcated balloon.

Embodiment

It is new below in conjunction with this practicality to make the purpose, technical scheme and advantage of the utility model embodiment clearer Accompanying drawing in type embodiment, the technical scheme in the utility model embodiment is clearly and completely described, it is clear that retouched The embodiment stated is a part of embodiment of the present utility model, rather than whole embodiments.Based on the reality in the utility model Apply example, the every other embodiment that those of ordinary skill in the art are obtained on the premise of creative work is not made, all Belong to the scope of the utility model protection.Accompanying drawing by illustrate exemplified by coronary artery furcation practical application of the present utility model and Operating method, is not intended to limit application of the utility model at all kinds of vascular bifurcation positions.

In the utility model, in the case where not making respective description, the noun of locality used such as " inside and outside " typically refers to phase Answer the inner and outer of contour of object；" remote, near " is then far and near position of certain part relative to another part, for intervention equipment such as Do not indicate referring in particular to thing then along using blood vessel distal where equipment as most " remote ", with to intervene the external extension direction of equipment away from From definition " near "；" forward and backward " is defined based on being typically then the implantation direction by support and associated components along blood vessel；I.e.：Phase Answer part to move forward into blood vessel, exit back blood vessel.These nouns of locality are served only for illustrating the utility model, are not limited to this Utility model.

In the utility model, " the main branch " that uses, " branch " blood vessel are to distinguish main Zhi Yanxu after vascular bifurcation Two or the name of Multivessel relative concept.Typically according to anatomical features such as blood vessel diameter, blood vessel blood supply range sizes Based on define." main branch " blood vessel is proximal segment including main branch vessel trunk, and distal section is the blood vessel diameter and blood vessel after bifurcated " continuity section " blood vessel that blood supply scope is larger, physiologic meaning is even more important, i.e. " main branch distal section " blood vessel." branch " this concept Also it is equal to herein and clinically describes " side branch " concept used in bifurcated lesions, refers to the one of " main branch distal section " blood vessel non-after bifurcated Branch or Multivessel." main branch " bifurcated with it is remote send two or suitable Multivessel anatomical features when " main branch distal section " with " point Branch ", the concept defining of " side branch " blood vessel be not absolute." main branch ", " branch " blood vessel determiner are served only for illustrating the utility model, It is not limited to the utility model.Similarly, the utility model support is also applied to the clinical implantation of branch vessel if necessary branch Frame, prepackage seal wire are used for the situation for protecting the main branch vessel distal section of bifurcation region.

In the utility model, " rack beams " used refer to constitute support unlike material single linear structure body or Connection." support mesh " refers to the independent geometric units of the closing being made up of in supporting structure " rack beams " or non-close.

The utility model is described in further detail below in conjunction with the accompanying drawings：

Embodiment 1：As Figure 1-4, the utility model, which is related to vascular bifurcation lesion, need to protect the one of branch vessel oral area Plant and load the branch's protection intravascular stent system that can withdraw conduit, be placed in vascular bifurcation position, vascular bifurcation position includes mutual The proximal segment of main branch vessel 101 and bifurcated of connection are with the remote distal section of main branch vessel 101, and the branch connected with main branch vessel 101 Blood vessel 102；Load can withdraw conduit branch's protection intravascular stent system include main branch support 103, main branch release sacculus 104, Main branch delivery conduit 105 and for protecting branch vessel 102, conveying branch protection seal wire 111 to withdraw conduit 106；

Main branch support 103 is the ring mesh structure with support mesh being made up of multiple rack beams；Main branch discharges ball Capsule 104 is arranged on main branch delivery conduit 105, and main branch support 103 is coated on the lateral surface of main branch release sacculus 104；

One end of conduit 106 (distal section) can be withdrawn to be arranged in main branch support 103 and discharge with main branch positioned at main branch support 103 Between sacculus 104 (i.e.：Conduit 106 can be withdrawn to be fixed in corresponding to the main proximal segment of branch support 103 to stage casing and proximal segment to stage casing Between main branch release sacculus 104)；The one end (i.e. distal section) of conduit 106 in main branch support can be withdrawn and be pressed against main branch support On the spacing beam 108 in 103 stage casings and port is located at spacing beam 108 and participated at the support mesh 107 of composition；What spacing beam 108 referred to It is to play extruding, fixation in the main structure of branch support 103 and can withdraw conduit 106 to act on farthest support fine strain of millet structure.

When main branch support 103 is positioned at vascular bifurcation position, branch's protection seal wire 111 is worn via conduit 106 can be withdrawn Cross support mesh 107 to deliver in the branch vessel 102 that need to be protected, point of branch vessel 102 is set up before the release of main branch support 103 The branch protection protection path of seal wire 111.

Further, what the spacing beam 108 for withdrawing conduit in the main stage casing of branch support 103 and its participate in was constituted withdraws and leads What the specific site of the support mesh 107 where the distal section of pipe 106 was applied depending on that can withdraw conduit branch vascular protection mounting system The anatomical features decision design of target blood.

Further, the material of main branch support 103 is the combination of single metal, alloy, high polymer material or above-mentioned material.

Further, the main structure design of branch support 103 is open or closed type design support.

Further, main branch support 103 is bare metal stent, bracket for eluting medicament or biodegradable support.

Further, combination of the material of conduit 106 for high molecular polymer or high polymer material and metal material can be withdrawn.

Further, it is that integral type design of material or sectional connected design or braider winding are strengthened that can withdraw conduit 106 The tubular structure of layer design.

Further, can withdraw conduit 106 is internally and/or externally provided with hydrophilic polymer coating.

Further, can withdrawing the distal section of conduit 106, there is impermeable X-ray to mark.

Further, main branch release sacculus 104 can set impermeable X-ray with the main edge corresponding part of branch support 103 and mark；It is main Corresponding spacing beam 108 can be provided with impermeable X-ray mark 109 on branch release sacculus 104.

Further, main branch delivery conduit 105 and corresponding with main branch delivery conduit 105 withdraw between conduit 106 not Interfix or continuously or discontinuously fixed by collagen, gelatin or other biological compatibility fixative；Conduit 106 can be withdrawn The part that proximal segment is not fixed by main branch support 103 and support release sacculus 104 is with the main traveling of branch delivery conduit 105.

Further, load can withdraw conduit branch's protection intravascular stent system be adaptation to end need to do different-diameter, The design of length.

Further, the vascular bifurcations that the branch of conduit protects intravascular stent system feeding to plan to implement processing can be withdrawn by loading Position, branch's protection warp of seal wire 111 can withdraw conduit 106 and deliver in the branch vessel 102 for intending protection, subsequent fixed support delivery system System and branch's protection seal wire can withdraw conduit and recede from stent delivery system.

By above-mentioned technical proposal, the utility model sets to withdraw and led between main branch support and main branch release sacculus Pipe, branch vessel to be protected is needed via can withdraw conduit by branch's protection seal wire feeding before main branch support discharges and is implanted into Interior, it is narrow that branch protects seal wire to complete branch vessel oral area as protection track carrying dilating sacculus and support after support release Narrow follow-up treatment, it is easy to operate；The difficult operation that branch's protection seal wire in the prior art passes through support mesh is avoided, to divide Branch vessel oral area is provided convenience, the protection method of safety.

Embodiment 2：The utility model provides a kind of use for branch's protection intravascular stent system that loading can withdraw conduit Method, wherein：

As shown in figure 1, the distal section that can withdraw conduit 106 is fixed in the spacing fine strain of millet of the main distal section of branch support 103 of main branch vessel 108 and between near main branch supporting structure and corresponding main branch release sacculus 104.The distal section oral area of conduit 106 can be withdrawn and be located at limit Position beam 108 is participated at the support mesh 107 of composition.

As shown in Fig. 2 branch's protection warp of seal wire 111 can withdraw the release of the oral area of conduit 106, it can be delivered to through support mesh 107 Beyond main branch supporting structure and operate deliver to needed for protection branch vessel 102 in, and with reference to main branch seal wire 110, branch protect Relation between impermeable X-ray mark 109 on seal wire 111 and main branch release sacculus 104, master is adjusted under different throw according to position Branch support 103 and branch's protection seal wire 111 are accurately positioned in furcation and ensure intervention equipment and the good alignment of blood vessel, keep away Exempt from branch's protection seal wire to wind on main branch support.

As shown in figure 3, branch's protection intravascular stent system that loading can withdraw conduit is expanded simultaneously in main branch release sacculus 104 After release, seal wire 111 is protected through support net by conduit 106 and branch can be withdrawn between main branch vessel 101 and branch vessel 102 Eye 107 sets up a branch vessel protection seal wire path.

As shown in figure 4, when the oral area of branch vessel 102 is impaired or narrow serious, through the protection feeding of seal wire 111 branch of branch Sacculus 112 completes bifurcated balloon expansion or expanded with 104 pairs of kisses of main branch release sacculus in main branch vessel, to improve branch vessel mouthful The Serious Stenosis that portion's lesion and spine's displacement are brought.Also necessity support technology (provisional stent can be used Technique) send into support to protect the unobstructed of the oral area blood flow of branch vessel 102 along branch's protection seal wire 111.

To sum up, the branch that loadings that the utility model is provided can withdraw conduit protects intravascular stent system and method can be Directly set up the protection seal wire path by support mesh arrival branch vessel after the release of main branch support, it is to avoid current clinic The seal wire of upper use is difficult to pass through the of a relatively high method of support mesh, branch vessel oral area protection failure probability, with higher Practicality and promotional value.

Branch's protection intravascular stent system that the loading that the utility model is provided can withdraw conduit is removed for having ordinary straight Outside the support of cartridge type opening, the implantation of the support of other shapes illustrates page, such as broadening formation support can be also used for.

In addition, branch's protection intravascular stent system that the loading that the utility model is provided can withdraw conduit is removed in branch In arterial vascular implantation field, branch's protection demand in the implantation of other bifurcated pipeline system frames is applied also for.Specification Accompanying drawing is not intended to limit this practicality new to illustrate practical application of the present utility model and operating method exemplified by coronary artery furcation Application of the type at all kinds of vascular bifurcation positions.

Preferred embodiment of the present utility model is these are only, the utility model is not limited to, for this area Technical staff for, the utility model can have various modifications and variations.It is all it is of the present utility model spirit and principle within, Any modification, equivalent substitution and improvements made etc., should be included within protection domain of the present utility model.

Claims

1. a kind of loading can withdraw branch's protection intravascular stent system of conduit, vascular bifurcation position, the vascular bifurcation are placed in Position includes main branch vessel and the branch vessel connected with main branch vessel；It is characterised in that it includes main branch support, main branch discharge ball Capsule, main branch delivery conduit and for protecting branch vessel, conveying branch protection seal wire to withdraw conduit；

The main branch release sacculus is arranged on the main branch delivery conduit, and the main branch support is coated on the main branch release ball On the lateral surface of capsule；

The distal section for withdrawing conduit is pressed against on the spacing beam of the main branch support and port is located at the spacing beam and participated in At the support mesh of composition, the rack beams of branch mid-stent based on the spacing beam.

2. as claimed in claim 1 load can withdraw branch's protection intravascular stent system of conduit, it is characterised in that it is described can The distal section for withdrawing conduit is marked provided with impermeable X-ray.

3. as claimed in claim 1 load can withdraw branch's protection intravascular stent system of conduit, it is characterised in that it is described can Withdraw tubular structure of the conduit for integral type design of material or sectional connected design or braider winding enhancement layer design.

4. as claimed in claim 1 load can withdraw branch's protection intravascular stent system of conduit, it is characterised in that it is described can Withdraw conduit is internally and/or externally provided with hydrophilic polymer coating.