CN206372163U

CN206372163U - With the tubular intravascular stent that can be bent from circumference to slot

Info

Publication number: CN206372163U
Application number: CN201620352620.6U
Authority: CN
Inventors: 郭红
Original assignee: Individual
Current assignee: Individual
Priority date: 2016-04-17
Filing date: 2016-04-17
Publication date: 2017-08-04
Anticipated expiration: 2026-04-17

Abstract

It is a kind of to carry the tubular intravascular stent that bend of the circumference to slot, some slots (A2) are cut open in the direction of the circumferential section of a thin-wall circular tube made by elastomeric material, pipe (A) is cut into one section and meets one section of support annulus A1, each circumference slot is made up of symmetrically deficient π slots two shorter than π radian, this is that a pair of 180 ° of mutual deviations are stitched to vertex cut, do not cut off in two intersections of this pair pairs of vertex cut seams, but two dowels (A3) are formd, two adjacent annulus are connected muscle and connected；The dowel of adjacent slot, which is based upon, to be rotated by 90 ° on position, so, the pipe can be bent in any direction of length；One is cut on each elastic support annulus (A1) and disconnects mouth (A4), support is wound into the same helical form of clock spring clockwork spring, it is inserted in after reducing overall diameter in teleflex (C), during operation, support is sent to behind precalculated position, its teleflex (C) is exited, support has elastic force in itself, can flick into circular tube shaped.

Description

With the tubular intravascular stent that can be bent from circumference to slot

Technical field

Belong to the invention in terms of the intravascular stent in treatment angiocardiopathy field.

Background technology

Angiocardiopathy has become the first big killer of human health, and intravascular stent is the important for the treatment of angiocardiopathy One of method, however, because the costliness and the costliness of surgery cost of support product, and for the wind of thin vessels laying bracket Danger so that this therapeutic scheme is abandoned in many patient's selections.So, research and develop the intravascular stent of low expense and easy operation side Method, is a kind of research for having very much social value and an economic value.

Current intravascular stent is a kind of netted intravascular stent, and its accuracy of manufacture requires high, manufacture difficulty is big, cost is high, And short intravascular stent can only be made, if necessary to length, several supports have to be put, so surgery cost is very big more.

Utility model content

Purpose is to provide a kind of novel vascular stent having the characteristics that：Simple in construction, manufacture difficulty is small, and (expense is low It is honest and clean)；4-5 times of existing netted intravascular stent length can be made (without laying multiple supports)；It can bend and (easily propagate through bending Blood vessel and be placed in curved blood vessel)；(strutting diameter/contracted diameter) shrinkage ratio is big, (easily propagating through minute blood vessel)；

The full name of the present invention is " carrying the tubular intravascular stent that can bend of the circumference to slot " (hereinafter referred to as Ai Si Support or AS supports), its general principle is：Have a thin-wall circular tube, the intensity of the pipe can vascular opening, the pipe Diameter is equal to the vessel diameter of support to be implanted, along the direction of the circumferential section of the pipe, is cut open on tube wall Slot (A2), is cut into one section by pipe (A) and connects one section of annulus (be referred to as support annulus A1), these slots (A2) are not 360 ° Slot, each circumference slot is that symmetrical slot two shorter than π radian (i.e. 180 °) is constituted, and every abbreviation " owes π to cut Seam ", two deficient π slots in same circle slot " are stitched " to vertex cut each other, are a pair of slots, the two of this pair pairs of vertex cut seams Individual intersection is not cut off, forms two dowels (A3), and this two dowel angles are at a distance of 180 °, referred to as a pair pairs of tops Dowel (A3), two adjacent annulus are connected muscle and connected；The dowel of adjacent slot is based upon 20 ° of rotation extremely On 90 ° of positions, for example：A pair of dowels of n-th of annulus are in 0 ° and 180 ° of position, then, a pair of companies of (n+1)th annulus Muscle is connect just in 90 ° and 270 ° of position, a pair of dowels of the n-th+2 annulus and in 0 ° and 180 ° of position, so, the pipe It can be bent in any direction of length, the pipe is referred to as AS pipes (A), is exactly AS supports (A),

Operation consent is needed to be compressed AS supports the processing of overall diameter, and the cross-wise direction of AS supports is wound or bent, Reduce AS stenter to implant before overall diameter, be inserted in a teleflex, in favor of facilitating intravasation, when AS supports are sent to should Behind the target location of placement, its teleflex is exited, AS supports elastic force in itself is recycled or with support dilator by AS branch Frame struts into tubular, completes support positioning.

Brief description of the drawings

In accompanying drawing, principal mark number is identical, and subscript is different, and expression is with the same device, such as：(A) it is that AS1 types support is overall, (A_a) it is the figure of (A) after the coiling；(B) it is fluid pressure type dilator, (B_a) it is shape after B is strutted, (B_b) it is after B is flattened Shape, (B_c) it is shape after B is flattened and wound；

Principal mark number is identical, behind numeral it is different, expression is with the different component in the same device, such as：Such as：(A) it is AS1 Type support is overall, and (A1) is a ring in (A), and (A2) is a deficient π slot in (A), and (A3) is a connection in (A) Muscle, (A4) is a disconnection mouth in (A)；

Fig. 1, self-supporting open type AS support (AS1 type supports, alternating expression disconnects mouth)

AS1 types support is overall (A)；Support annulus (A1)；Owe π slots (A2)；Dowel (A3)；Alternating expression disconnects mouth (A4)；

Fig. 1 .1, self-supporting open type AS support (AS1 type supports, I-shaped disconnects mouth)

I-shaped disconnects mouth (A4)；Other symbols are identical with Fig. 1.

Sectional view after Fig. 1 .2, AS1 types support winding

AS1 type supports are wound into the same helical form of clock spring clockwork spring (or involute shape), bracket cross section (A_a)；Branch Frame dilator (B)；Teleflex (C).

Fig. 2, fluid pressure type dilator (B)

One is the entirety of fluid pressure type dilator with onesize and shape the capsule of AS supports (B), (B)；(B1) it is axially strong Plus fiber；(B2) circumference is to reinforcing fibre；Oblique reinforcing fiber (bad picture, so not drawing) can also be used.

Fig. 2 .1, fluid pressure type dilator sectional view (B_a)

Fluid pressure type dilator sectional view (B_a), this is an enlarged drawing, and it is exactly Fig. 2 sectional view.

Fig. 2 .2, sectional view (B after fluid pressure type dilator is flattened_b)

Fluid pressure type dilator sectional view (B_a) be crushed after, into fluid pressure type dilator flatten after sectional view (B_b)。

Fig. 2 .3, fluid pressure type dilator flattens and winds sectional view (B_c)

Fluid pressure type dilator flattens and winds sectional view (B_c)。

Fig. 3, mechanical dilator (D)

Mechanical dilator is overall (D)；Umbrella frame (D1)；Umbrella axle (D2)；Connecting rod (D2)；Umbrella axle (D3)；The activity of umbrella edge Node (D4).

Fig. 4, AS2 type support (E)

AS2 types support is overall (E).

The sectional view that Fig. 4 .1, AS2 type supports (E) are strutted with dilator (B)

The AS2 type supports that plastic material makes strut sectional view (E_a)；Dilator struts sectional view (B_a)。

The sectional view that Fig. 4 .2, AS2 type supports (E) are flattened with dilator (B)

AS2 types support flattens sectional view (E_b)；Dilator flattens sectional view (B_b)。

Fig. 4 .3, AS2 type supports (E) flatten with dilator (B) and wind sectional view

AS2 type supports flatten and wind sectional view (E_c)；Dilator flattens and winds sectional view (B_c)；Teleflex (C).

Fig. 4 .4, polygonal star aggregation AS2 types support (E) and takeup type dilator (B) sectional view

AS2 type supports are compressed into polygonal star formula sectional view (E_d)；Dilator flattens and winds sectional view (B_c)。

Fig. 4 .5, polygonal star aggregation AS2 types support (E) and polygonal star-like dilator (B) sectional view

AS2 type supports are compressed into polygonal star formula sectional view (E_d)；It is compressed into polygonal planetary dilator sectional view (B_d)。

Embodiment

Embodiment 1, self-supporting open type AS supports (AS1 types support)

Piece AS supports that are made by elastomeric material, support annulus is into elastic support annulus, in each elastic support circle Cut open a gap (A4) on ring (A1), annulus is by the O-shaped c-type for being broken into opening closed, and also known as breach (A4) is disconnection Mouthful, it can be able to be that the alternating expression in Fig. 1 disconnects mouth in any position in addition to dowel (A3) to disconnect mouth (A4) (A4) I-shaped or in Fig. 1 .1 disconnects mouth (A5), because all annulus have disconnection mouth, then, the O of closure Type AS pipes have been broken into the AS pipes of opening, referred to as AS1 types support, and section is seen towards axis direction, and AS1 types support can be by It is wound into the same helical form (A of clock spring clockwork spring_a, Fig. 1 .2, or involute shape), overall diameter is reduced, is then inserted in soft In sleeve pipe (C), during operation, support is reached behind precalculated position, its teleflex (C) is exited, AS1 types support has bullet in itself Power, can flick into circular tube shaped, and a support dilator (B) helps AS1 type supports to strut into tubular, (B) is one optional , need to use when strutting incomplete.

Embodiment 2, fluid pressure type dilator (B)

One with onesize and shape the capsule of AS supports (B, i.e., whole Fig. 2), as automobile tire use high intensity Fiber reinforcement intensity, the cross sectional shape after (B) is strutted is circle (B_a), turn into Fig. 2 .2 flat-shaped (B after flattening_b), then wind Turn into Fig. 2 .3 involute shape (B afterwards_c), be placed in Fig. 1 .2 wind after AS1 type supports in, when support in place after, soft Sleeve pipe (C) is exited, and AS1 types support can be automatically springed open, if flick it is insufficient, just to fluid pressure type dilator (B) inject pressure fluid, Help support to strut, (B1) and (B2) is to strengthen the circumferential and axial fiber of hydraulic pressure dilator intensity, can also be increased using oblique Strong fiber (bad picture, so not drawing).

Embodiment 3, mechanical dilator (D)

A piece axle (D2), multiple umbrellas manufactured above it is the same strut body, these strut soma it is crisp just be umbrella, when support in place Afterwards, teleflex (C) is exited, AS1 types support can be automatically springed open, if flicking insufficient, turns on these umbrellas, help support support Open.

Embodiment 4, the evolvent type compression of O-shaped AS supports (E)

Piece AS supports (E) that are made by plastic material, into plasticity support annulus, are not turned off mouth on annulus, are one A fluid pressure type dilator (B) is put in the individual O-shaped AS supports of plasticity, referred to as AS2 types support, the inside, and it is Fig. 4 .1's that it, which struts section, Circle (E_a) and (B_a), (E_a) and (B_a) turn into Fig. 4 .2 flat-shaped section (E after flattening_b) and (B_b), its two ends is not flattened, with Recover circular beneficial to support, then by flat-shaped (E_b) and (B_b) it is wound into involute-shaped cross section (E_c) and (B_c), then it is inserted in teleflex (C) in turn into section be Fig. 4 .3 involute shape support, when support in place after, teleflex (C) is exited, supportted to fluid pressure type Device (B) injection pressure fluid is opened, AS2 types support can be softened.

Embodiment 4.1, the polygonal planetary of O-shaped AS supports (E) is compressed

Piece AS2 types support (E) that is made by plastic material, is bent into multi-corner star-shape (E_d, Fig. 4 .3), the inside puts one Fluid pressure type dilator (B), includes dilator (Fig. 4 .4, B of evolvent type compression_c) and star compression dilator (Fig. 4 .5, B_d)。

Embodiment 5, spring wire form AS supports (AS3 types support)

By the material substitution of elastic support annulus (A1) and dowel (A3) in embodiment 1 into spring wire, weld, i.e., As spring wire form AS supports (AS3 types support).

Claims

1. it is a kind of carry the tubular intravascular stent that can bend of the circumference to slot, abbreviation AS supports, it is characterized in that：

There is a thin-wall circular tube, vascular opening, the diameter of the pipe can be equal to support to be implanted by the intensity of the pipe Vessel diameter, along the directions of the circumferential section of the pipe, some slots (A2) are cut open on tube wall, pipe (A) is cut into One section connect one section support annulus (A1), each circumference slot is by two shorter than π radian symmetrically deficient π slot structures Into two deficient π slots in same circle slot are stitched to vertex cut each other, are a pair of mutual deviations, 180 ° of slots, in this pair pairs of vertex cuts Two intersections of seam are not cut off, but form two dowels (A3), and this two dowel angles claim at a distance of 180 ° For a pair pairs of top dowels (A3), two adjacent annulus are connected muscle and connected；The dowel of adjacent slot is based upon Rotate on 20 ° to 90 ° positions, so, the pipe can be bent in any direction of length；

One is cut on each support annulus (A1) and disconnects mouth (A4), support is wound into the same spiral of clock spring clockwork spring Shape (A_a), overall diameter is reduced, is then inserted in teleflex (C), during operation, support is sent to behind precalculated position, by its soft set Pipe (C) is exited, then support is strutted into tubular.

2. according to claim 1 a kind of with the tubular intravascular stent that can bend of the circumference to slot, it enters one Walk and be characterized in：The dowel of adjacent slot is based upon on the position being rotated by 90 °.