CN108938161A - Peripheral vascular stents - Google Patents
Peripheral vascular stents Download PDFInfo
- Publication number
- CN108938161A CN108938161A CN201711148130.XA CN201711148130A CN108938161A CN 108938161 A CN108938161 A CN 108938161A CN 201711148130 A CN201711148130 A CN 201711148130A CN 108938161 A CN108938161 A CN 108938161A
- Authority
- CN
- China
- Prior art keywords
- unit
- connecting rod
- support ring
- bar
- support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/82—Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
- A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
- A61F2/90—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure
- A61F2/91—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes
- A61F2/915—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure characterised by a net-like or mesh-like structure made from perforated sheet material or tubes, e.g. perforated by laser cuts or etched holes with bands having a meander structure, adjacent bands being connected to each other
- A61F2002/9155—Adjacent bands being connected to each other
Abstract
It is tubular structure the invention discloses a kind of peripheral vascular stents, the waveform support ring including multi-turn axial alignment is equipped at intervals at least one set of connection component between two adjacent circle support rings；The support ring is formed by support unit is end to end；Each support unit includes wave crest unit, trough unit, the wave bar being connected between wave crest unit and trough unit；Connection component described in every group includes the connecting rod of at least two circumferential arrays；Each connecting rod is fixed between the wave crest unit or trough unit and the wave bar of adjacent supports ring of a support ring.The present invention provides one kind and had not only been able to maintain the axial bonding strength and radial support power of bracket, but also can guarantee the flexibility of bracket entirety and the peripheral vascular stents of flexibility.
Description
Technical field
The invention belongs to the field of medical instrument technology, are related to a kind of bracket more particularly to a kind of peripheral vascular stents, are applicable in
In can be used for peripheral blood vessel lumen blocking and hemadostewnosis treatment.
Background technique
Peripheral artery disease is a kind of common manifestation of systemic atherosclerosis, can induce systemic arteriosclerosis and painstaking effort
Pipe morbidity and mortality.After lesion occurs for peripheral blood vessel, lumen of vessels stenosis is narrow, and the blood flow for injecting lower limb becomes smaller, under causing
Limb blood supply insufficiency, phenomena such as causing limb necrosis.Venous disease mainly includes phlebostenosis, and phlebothrombosis and Venous Reflux etc. are more
The disease of seed type.Especially vein by artery-compression easily because being caused luminal stenosis, such as left common iliac vein because of right common iliac artery
It is oppressed jointly with fifth lumbar vertebra, the mechanical pressure and arteriopalmus of duration cause adhesion in venous lumen, endometrial hyperplasia, fiber
Change.Cause its luminal stenosis, occlude and lead to left lower extremity venous return obstacle, causes Iliac Vein Compression Syndrome (IVCS).This
Syndrome bilateral can occur, but common with left side.IVCS is very high in adult disease incidence, reaches 20%~34%, due to
The lumbosacral region physiological bending of women becomes apparent compared with male, 23~45.5 years old female predominance (70%~84%).Study table
Bright, iliac vein disease, not only disease incidence is high, but also is secondary varix of lower limb, Muscular loop incompetence and Deep venou
The main reason for thrombosis (Deep Vein Thrombosis, DVT).
Peripheral artery disease primary treatments include medical treatment and operative treatment, wherein medical treatment: decompression, drop
Rouge, the disease progression that the treatments such as platelet aggregation-against can delay lower extremities to occlude, but blood vessel cannot be inherently eliminated
It is narrow, occlusion etc. organic diseases.Operative treatment: it is divided into open surgery and Endovascular interventional treatment.Endovascular intervention
Treatment: have the advantages that minimally invasive, easy to operate, curative for effect, repeatable operation, be the developing direction of diagnosis and treatment vascular conditions.
Currently used intervention therapeutic apparatus is mainly balloon expandable stent and Self-expanded stent.Self expandable bare bracket is mesh
Preceding that more bracket is applied in the vascular interventional treatment of periphery, the design of bare bracket is divided into open-loop design and closed loop design.
Open-loop design, which refers to, to be formed by connecting between carrier unit ring and cell rings by several connecting rods.The mode of connecting rod
There are three types of: wave crest connects wave crest and is connected with un-flexed connecting rod；Wave crest connects wave crest connection with bent connecting rod；Wave crest pair
Trough connection is connected with un-flexed connecting rod., there are fabulous flexibility and adherent performance in the advantages of open-loop design.Its disadvantage has: branch
Support force is slightly weak and windowing area is larger.
Closed loop design, which refers to, to be formed by connecting between each cell rings of bracket and cell rings by connecting rod, closed loop design it is excellent
Point has that radial support power is stronger and windowing area is smaller.Its disadvantage has: flexibility is poor and adherent performance is bad.
Existing market periphery open-loop design arteriovenous bracket is flexible after expansion, and compliance is good, but the disadvantage is that because of metal
Coverage rate is small and radial support power is relatively small, is also easy to produce tissue prolapse and causes restenosis, and in addition axial bonding strength is not good enough,
Bracket waveform, which is easy to be stretched, causes injury of blood vessel.And the existing periphery closed loop design arteriovenous bracket in market is then that repetition is each
Monocycle, metal coverage rate is larger, and have biggish radial support power, can uniform fold on vascular wall, prevent patch from falling off,
But this design flexibility is relatively poor, does not adapt to bending complex lesions blood vessel.Due in the application process of intravascular stent,
It needs to compress intravascular stent, conveyed and expanded, so intravascular stent must have good compressibility, conveying submissive
Property and expansion uniformity, this proposes very high requirement to the design of the material and structure of intravascular stent, and existing bracket still cannot
The perfect unity of these technical indicators is realized well.
Summary of the invention
The technical problem to be solved in the present invention is that in view of the drawbacks of the prior art, providing one kind and being both able to maintain bracket
Axial bonding strength and radial support power, and ensure that the flexibility of bracket entirety and the peripheral vascular stents of flexibility.
The technical solution adopted by the present invention to solve the technical problems is:
A kind of peripheral vascular stents are tubular structure, the waveform support ring including multi-turn axial alignment, two adjacent circle branch
At least one set of connection component is equipped at intervals between pushing out ring；
The support ring is formed by support unit is end to end；Each support unit includes wave crest unit, trough list
Member, the wave bar being connected between wave crest unit and trough unit；
Connection component described in every group includes the connecting rod of at least two circumferential arrays；
Each connecting rod is fixed on the wave crest unit an of support ring or the wave bar of trough unit and adjacent supports ring
Between.
In the peripheral vascular stents, in preferably same connection component, eight in splayed or between the connecting rod
Font arrangement.
In the peripheral vascular stents, one end of the preferably described connecting rod be fixed on a support ring wave crest unit or
On trough unit, the other end be fixed on adjacent support ring wave bar middle part.
In the peripheral vascular stents, preferably between two adjacent rings support ring, all connection component uniform intervals
Arrangement one circle, and the connecting rod in every group of connection component arrangement mode it is all identical or it is regular repeat arrange.
In the peripheral vascular stents, the connection component being arranged between three preferably adjacent circle support rings, in the axial direction
Projection be not overlapped or partly overlap.
In the peripheral vascular stents, preferably connection component all between support ring, projection in the axial direction are not weighed
It folds or partly overlaps；
Or all connection components twist arrangement or staggered in the axial direction.
In the peripheral vascular stents, the wave bar of the preferably described support unit is straight-bar, has warp architecture or arc
The special-shaped bar of structure, the wave bar are structure as a whole or are fixedly connected with wave crest unit and trough unit.
In the peripheral vascular stents, the preferably described connecting rod is straight-bar, different with warp architecture or arcuate structure
Shape bar or their combination.
In the peripheral vascular stents, the preferably described special-shaped bar with warp architecture or arcuate structure be curved rod,
Straight-bar, Z-shaped bar or S-shaped bar equipped with curved portion.
In the peripheral vascular stents, it is structure as a whole between the preferably described connecting rod and support unit or the company of fixation
It connects.
In the peripheral vascular stents, the shape and support ring-shaped cooperation of the preferably described connecting rod, in the axial direction
It projects completely overlapped or substantially overlapping with the axis projection of adjacent support ring.
In the peripheral vascular stents, the preferably described support ring axial arranging forms the tubular structure or non-of isometrical extension
The tubular structure of isometrical extension.
The present invention realizes the connection between support ring by connection component, and the connecting rod in every group of connection component is circumferentially arranged
Column, cooperatively form certain radial support power, and form closed loop configuration between connecting rod and support unit, improve bracket
Axial bonding strength, connection component twist arrangement or staggered in the axial direction, axially adjacent closed loop configuration is in axial direction
On projection be not overlapped or only partly overlap, such structure had both met bracket with comparable support force, and was spaced and sets
Set connection component and link position makes axial support force not excessive on wave bar, the support unit not connecting with connecting rod,
Curved freedom degree is larger, ensure that the flexibility of bracket so that bracket bending or it is flexible when be able to maintain good support
Waveform.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the expanded view of the bracket of the embodiment of the present invention one；
Fig. 2 is the partial enlarged view of the bracket expanded view of the embodiment of the present invention one；
Fig. 3 is the expanded view of the bracket of the embodiment of the present invention two；
Fig. 4 is the partial enlarged view of the bracket expanded view of the embodiment of the present invention two；
Fig. 5 is the expanded view of the bracket of the embodiment of the present invention three；
Fig. 6-7 is the partial enlarged view of the bracket expanded view of the embodiment of the present invention three；
Fig. 8 is the expanded view of the bracket of the embodiment of the present invention four；
Fig. 9-10 is the partial enlarged view of the bracket expanded view of the embodiment of the present invention four；
Figure 11 is the expanded view of the bracket of the embodiment of the present invention five；
Figure 12 is the partial enlarged view of the bracket expanded view of the embodiment of the present invention five；
Figure 13 is the expanded view of the bracket of the embodiment of the present invention six；
Figure 14-15 is the partial enlarged view of the bracket expanded view of the embodiment of the present invention six；
Figure 16 is the expanded view of the bracket of the embodiment of the present invention seven；
Figure 17-18 is the partial enlarged view of the bracket expanded view of the embodiment of the present invention seven；
Figure 19 is the expanded view of the bracket of the embodiment of the present invention eight；
Figure 20-21 is the partial enlarged view of the bracket expanded view of the embodiment of the present invention eight.
Specific embodiment
For a clearer understanding of the technical characteristics, objects and effects of the present invention, now control attached drawing is described in detail
A specific embodiment of the invention.
Bearing definition: proximal end of the present invention refer to stenter to implant blood vessel after-poppet close to one end of heart, as Fig. 1,
3, one end that letter J is indicated in 5,8,11,13,16,19；Distal end for far from heart one end, as Fig. 1,3,5,8,11,13,16,
One end that letter Y is indicated in 19；Axially refer to that the central axes direction of support ring, the direction vertical with central axes are radial.
Embodiment one: as shown in Figs. 1-2, a kind of peripheral vascular stents are tubular structure, the wave including multi-turn axial alignment
Shape support ring 100, the arrangement mode of support ring 100 can there are many: 100 axial arranging of support ring forms isometrical extension
Tubular structure or the tubular structure of non-isometrical extension.In order to adapt to the specific demand of different blood vessel, peripheral blood provided by the invention
Pipe holder can also be the tubular structure of non-isometrical extension other than the tubular structure of isometrical extension, for example, support ring 100 is straight
Diameter is sequentially increased or reduces arrangement, forms the peripheral vascular stents of Taper Pipe shape.Or the diameter of 100 different location of support ring has change
Change, form the tubular structure of various non-isometrical extensions, such as peripheral vascular stents are the variable diameter knot of Taper Pipe shape and straight tube-like composition
Structure.In the axial direction, the setting according to actual needs of peripheral vascular stents is formed, the number of the preferably described support ring 100 is 8-50
It is a.
At least one set of connection component 120 is equipped at intervals between two adjacent circle support rings 100；The support ring 100 is by propping up
Support the end to end composition of unit；Each support unit 110 includes wave crest unit 111, trough unit 112, is connected to wave crest
Wave bar 113 between unit 111 and trough unit 112；Connection component 120 described in every group includes the company of at least two circumferential arrays
Extension bar 121.Between two i.e. adjacent support rings 100, there are two types of the connections of the support unit 110 of composition support ring 100,
One is being connect by connection component 120 with the support unit 110 of adjacent supports ring 100, another situation is that it is axially adjacent and
It is connectionless between corresponding support unit 110, opposite activity can be carried out therebetween.Since connection component 120 is for branch
Connection between pushing out ring 100 arranges in 121 circumferential direction of connecting rod in every group of connection component 120, cooperatively forms certain radial branch
Support force, and closed loop configuration is formed between connecting rod 121 and support unit 110, closed loop configuration improves the axial connection of bracket
Intensity, and 121 link position of connecting rod is respectively: one end on wave crest unit 111 or trough unit 112, the other end is in wave bar
On 113, middle connecting rod is connected to the structure between wave crest unit and trough unit compared with the prior art, and it is strong to reduce axial connection
Degree, increase between flexibility.Such structure had both met bracket with comparable support force, and was spaced setting connection group
Part 120 makes support force excessively not big, and the support unit not connecting with connecting rod, curved freedom degree is larger, ensure that branch
The flexibility of frame.The quantity of connecting rod 121 in each connection component 120 support force according to actual needs and flexibility are determined
It is fixed, equally, the number of the support force being spaced also according to actual needs between connection component 120 and flexibility and connecting rod 121
Amount balance determines.
As shown in Figure 1, support ring 100 is by multiple circumferentially distributed end to end formation sinusoidal waveforms of support unit 110, i.e.,
The sine wave is constituted by support unit 110 is end to end, and each support unit 110 includes wave crest unit 111, trough list
Member 112, the wave bar 113 being connected between wave crest unit 111 and trough unit 112.Wave crest unit 111 and trough unit 112 are excellent
It is selected as arc-shaped structure, the angle α between two neighboring wave bar 113 is 10-45 °, 113 proximal end of adjacent wave bar (end J) connecting place
For wave crest unit 111, two neighboring 113 distal end (end Y) connecting place of wave bar is trough unit 112.Two axially adjacent circle supports
Ring 100 keeps trough unit 112 to trough unit 112, and wave crest unit 111 is to 111 arrangement mode of wave crest unit.Support ring 100
In 113 quantity of support rod set according to actual needs, preferred 113 quantity of wave bar of individual pen support ring 100 in a circumferential direction
For 14-30 root.
In same bracket, multiple support rings 100 can have roughly the same waveform, that is, have phase co-wavelength and phase
With the waveform of amplitude, it is possible to have the support ring 100 of bracket is arranged with specific reference to needing for different wave.In bracket, wavelength
Can be different due to the difference of the outer diameter of bracket, but preferably its wavelength is 0.5mm-8.0mm, particularly preferred 2.0mm-4.0mm, amplitude
Preferably 0.1mm-10.0mm, particularly preferably 0.3mm-3.0mm.
The wave bar 113 of the support unit 110 be straight-bar, the special-shaped bar with warp architecture or arcuate structure or it
Combination, shape of wave bar 113 is shape when support ring 100 is launched into plane at this.Special-shaped bar refers to wave bar
113 be non-straight-bar, and the special-shaped bar with warp architecture refers to that warp architecture is wave bar with warp architecture in straight-bar or curved rod
There is bending part on 113, bending part can reinforce the bending or stretch performance of wave bar 113.Warp architecture is wave bar 113 to two sides
Structure outstanding, warp architecture can be set in any position of wave bar 113, be preferably provided at 113 middle part of wave bar, warp architecture
Bending degree and quantity can be set according to actual needs, can select and any be suitble to structure of the invention.It is preferred that institute
Stating the special-shaped bar with warp architecture or arcuate structure is curved rod, the straight-bar equipped with curved portion, Z-shaped bar or S-shaped bar.This implementation
In example, as shown in Figure 1, the wave bar 113 of the support ring 100 of the present embodiment all selects straight-bar.In addition to above structure, the support ring
Subwave bar 113 on 100 is the wave bar 113 of middle bent.
In each support unit 110 of support ring 100, the wave bar 113 is with wave crest unit 111 and trough unit 112
Integral structure is fixedly connected.Entire support ring 100 equally can be integral structure or be fixedly connected to form.Branch of the present invention
Frame is cut by laser thermal finalization and is made, and stainless steel, tantalum, cobalt-base alloys, platinum, Nitinol and new can be selected in rack body material
Type Titanium Alloy, preferred material are Nitinol.
In one connection component 120, the quantity of connecting rod 121 is at least two, but excessive connecting rod 121 is arranged,
Make support force too strong again, bracket flexibility weakens, and therefore, 121 quantity of connecting rod is 2-6, preferably 2-3.
There are many fixed forms of connecting rod 121, and the connecting rod 121 is fixed on the wave crest unit an of support ring 100
Between 111 or trough unit 112 and the wave bar 113 of adjacent supports ring 100.As shown in Figs. 1-2, the wave of first lap support ring 100
Connecting rod 121, the second circle support ring are equipped between paddy unit 112 and 113 middle part of wave bar corresponding in the second circle support ring 100
100 trough unit 112 and wave bar corresponding in third circle support ring 100 are equipped with connecting rod 121 between 113 middle part, below with
This analogizes.In same connection component 120, it can be and be arranged in parallel between the connecting rod 121, be also possible in splayed or fall
Splayed arrangement, preferably arranges in splayed or herringbone, this arrangement mode can reinforce support force, in identical quantity
Connecting rod 121 improves radial support power, and forms closed loop configuration between connecting rod 121 and support unit, and closed loop configuration is improved
The axial bonding strength and radial support power of bracket.In the present embodiment, due to the wave crest unit of support ring 100 in the axial direction
111 is corresponding with the wave crest unit 111 of adjacent supports ring 100, then for two adjacent rings support ring 100, connecting rod 121 is connected to closely
It holds on the trough unit 112 of support ring 100 and the wave bar 113 of distal end support ring 100, connecting rod 121 forms incline structure, then all
Splayed or herringbone arrangement are just formed to two adjacent connecting rods 121.And the connecting rod in every group of connection component 120
121 are symmetrical arranged.It is structure as a whole or is fixedly connected between the connecting rod 121 and support unit 110.Wherein, it is integrally formed
It is to be formed using tubing laser cutting.
Between two adjacent rings support ring 100, all connection components 120 circumferentially enclose by uniform intervals arrangement one, and every group
The arrangement mode of connecting rod 121 in connection component 120 it is all identical or it is regular repeat arrange.Arrangement mode is identical to refer to connecting rod
121 one circles of arrangement in one way, such as arranged in splayed or herringbone.In the present embodiment, two companies of setting
Extension bar 121 is arranged in splayed.Rule repetition arrangement, which refers to, exactly circumferentially to be carried out repeating arrangement according to certain rule, such as: in week
Upwards, the connection component that eight words are arranged alternately with eight words, adjacent connecting rod spacing distance is different is arranged alternately.
In the peripheral vascular stents, preferred connection component 120 all between support ring 100, throwing in the axial direction
Shadow is not overlapped or partly overlaps；Or all connection components 120 twist arrangement or staggered in the axial direction.I.e. in axis
The projection perhaps connecting rod 121 that is not overlapped or partly overlaps for connecting up bar 121 sequentially arranges and forms spiral shape or adjacent
The connecting rod 121 of two circles is in axially staggered arrangement, so that bracket flexibility is relatively good, can be adapted to complicated blood vessel structure,
So that connection component 120 is born bigger local pulling force and pressure, and keeps bracket deformation in flexible or bending uniform.
The connecting rod 121 is straight-bar, special-shaped bar or their combination with warp architecture or arcuate structure.Institute
Stating connecting rod 121 is preferably curved connecting rod 121, and length can be 0.3mm-12mm, preferably 0.5mm-5mm.Bending knot
Structure is connecting rod 121 to two sides structure outstanding, and warp architecture can be set in any position of wave bar 113, be preferably provided at
121 middle part of connecting rod, the bending degree and quantity of warp architecture can be set according to actual needs, can be selected any suitable
Close structure of the invention.
As shown in Fig. 2, two connecting rods 121 in one group of connection component 120 are in eight word symmetry arrangements, the connecting rod
121 and the angle of horizontal direction are 20 ° -160 °, preferably 30 ° -150 °.The proximal end of described two connecting rods 121 respectively with branch
Two adjacent trough units 112 connect on pushing out ring 100, the distal end of one of connecting rod 121 and axially adjacent support ring 100
The middle part of the left side wave bar 113 of upper corresponding trough unit 112 connects, the distal end of another connecting rod 121 and axially adjacent support
The middle part connection that the right-hand wave bar 113 of trough unit 112 is corresponded on ring 100, constitutes a closed loop connection unit 130, improves
The axial bonding strength and radial support power of bracket.
Embodiment two:
As shown in Figure 3-4, the bracket of the embodiment of the present invention two is generally tubular in configuration, including support ring 100 and connection group
Part 120, support ring 100 and connection component 120 are successively periodically alternately arranged along axial direction.The setting and embodiment of support ring 100
The setting of one support ring 100 is consistent, repeats no more.What is different from the first embodiment is that the connection component 120 of embodiment two is by two groups
Or connecting rod 121 more than two is uniformly distributed composition, every group of connection component 120 is made of symmetrical two connecting rods 121, such as
Shown in Fig. 4, symmetrical two connecting rods 121 are in eight words arrangement, and the distal end of two connecting rods 121 is respectively and in support ring 100
Two adjacent wave crest units 111 connect, and correspond to wave crest list in the proximal end of a connecting rod 121 and axially adjacent support ring 100
The middle part of the left side wave bar 113 of member 111 connects, and corresponds to wave in the proximal end of another connecting rod 121 and axially adjacent support ring 100
The middle part of the right-hand wave bar 113 of peak unit 111 connects, and constitutes a closed loop connection unit 130, the axial direction for improving bracket connects
Connect intensity and radial support power.
Remaining structure is as in the first embodiment, details are not described herein.
Embodiment three:
As shown in figure 5, the bracket of the embodiment of the present invention three is tubular structure, including support ring 100, connection component 120, branch
Pushing out ring 100 and connection component 120 are successively periodically alternately arranged along axial direction, the setting of support ring 100 and the support of embodiment one
Ring 100 is arranged unanimously, and unlike embodiment one or two, as shown in fig. 6-7, there are two types of closed loop connection units for embodiment three
130, as shown in fig. 6-7, two closed loop connection units 130 are staggeredly intervally arranged, and projection in the axial direction is not overlapped.Such as Fig. 6 institute
Show, two connecting rods 121 are in eight word symmetry arrangements, the proximal end of two connecting rods 121 respectively with two adjacent trough units 112
It is connected, and the left side wave bar 113 of trough unit 112 is corresponded in the distal end of a connecting rod 121 and axially adjacent support ring 100
Middle part connects, and the right-hand wave bar of trough unit 112 is corresponded on the distal end of another connecting rod 121 and axially adjacent support ring 100
113 middle part connection, constitutes a closed loop connection unit 130.As shown in fig. 7, symmetrical two connecting rods 121 are in eight words
It arranges, in the left side wave bar 113 that wave crest unit 111 is corresponded on the proximal end of a connecting rod 121 and axially adjacent support ring 100
Portion connects, and the right-hand wave bar 113 of wave crest unit 111 is corresponded on the proximal end of another connecting rod 121 and axially adjacent support ring 100
Middle part connection, and the distal end of two connecting rods 121 is connected with two adjacent wave crest units 111 respectively, constitutes one and closes
Ring connection unit 230, the circumferential circle of the present embodiment connection component 120 preferably contain three groups of connection components 120.
The wave bar 113 of the first lap support ring 100 of distal end selects straight-bar, 113 a part of wave bar of the second circle support ring 100
Z-shaped bar is selected, and so on, curved part is preferably provided at 113 middle part of wave bar.
Remaining structure is as in the first embodiment, details are not described herein.
Example IV:
As shown in figure 8, the bracket of the embodiment of the present invention four is generally tubular in configuration, including support ring 100, connection component
120, support ring 100 and connection component 120 are successively periodically alternately arranged along axial direction.Company between adjacent three circles support ring 100
Connected components 120 are staggered in the axial direction.
The structure and embodiment one of support ring 100 are consistent, what is different from the first embodiment is that the connection component of example IV
120, it is uniformly distributed constitutes by two or two or more connecting rods 121 respectively.As shown in figure 9, one of connection component 120
Including constituting in symmetrical two connecting rods 121 of herringbone, the proximal end of two connecting rods 121 is respectively in support ring 100 two
A adjacent trough unit 112 connects.Trough unit is corresponded in the distal end of one connecting rod 121 and axially adjacent support ring 100
The middle part of 112 right-hand wave bar 113 connects, and corresponds to trough in the distal end of another connecting rod 121 and axially adjacent support ring 100
The middle part of the left side wave bar 113 of unit 112 connects, and constitutes a closed loop connection unit 130.As shown in Figure 10, another connection
Every group of connecting rod of component 120 is made of symmetrical two connecting rods 121, is arranged in eight words, the distal end point of two connecting rods 121
It is not connect with wave crest units 111 two adjacent in support ring 100, the proximal end of a connecting rod 121 and axially adjacent support ring
The middle part connection of the right-hand wave bar 113 of wave crest unit 111, the proximal end of another connecting rod 122 and axially adjacent branch are corresponded on 100
The middle part connection that the left side wave bar 113 of wave crest unit 111 is corresponded on pushing out ring 100, constitutes a closed loop connection unit 130.It closes
Ring connection unit 130 is staggeredly intervally arranged, and further improves the axial bonding strength and radial support power of bracket, and ensure that
The flexibility of bracket entirety.
Remaining structure is as in the first embodiment, details are not described herein.
Embodiment five:
As shown in figure 11, the bracket of the embodiment of the present invention five is generally tubular in configuration, including support ring 100 and connection component
120, support ring 100 and connection component 120 are successively periodically alternately arranged along axial direction.The setting and embodiment one of support ring 100
Unanimously, what is different from the first embodiment is that the connection component 120 of embodiment five is uniform by two groups or more connecting rod 121
Distribution is constituted, and every group of connection component 120 is made of symmetrical two connecting rods 121, as shown in figure 12, symmetrical one group of two company
Extension bar 121 is arranged in eight words, and the proximal end of two connecting rods 121 is spaced the trough of a trough with two in support ring 100 respectively
Unit 112 connects, and the left side wave bar of trough unit 112 is corresponded on the distal end of a connecting rod 121 and axially adjacent support ring 100
113 middle part connects, and the right side of trough unit 112 is corresponded on the distal end of another connecting rod 121 and axially adjacent support ring 100
The middle part of wave bar 113 connects, and constitutes a closed loop connection unit 130, improves the axial bonding strength and radial direction branch of bracket
Support force.
Remaining structure is as in the first embodiment, details are not described herein.
Embodiment six:
As shown in figure 13, the bracket of the embodiment of the present invention six is generally tubular in configuration, including support ring 100 and connection group
Part 120, support ring 100 and connection component 120 are successively periodically alternately arranged along axial direction, between adjacent three circles support ring 100
Connection component 120 is intervally arranged in the axial direction.
The structure and embodiment five of support ring 100 are consistent, unlike embodiment five, the connection component of embodiment six
There are two types of 120, be all uniformly distributed and constituted by two groups or more connecting rod 121 respectively, wherein every group of connection component 120 by
Symmetrical two connecting rods 121 are constituted, and as shown in figure 14, symmetrical two connecting rods 121 are in eight words arrangement, two connecting rods
121 proximal end is connect with the trough unit 112 of two intervals, one trough in support ring 100 respectively, connecting rod 121 it is remote
It holds and is connected with the middle part for the right-hand wave bar 113 for corresponding to trough unit 112 in axially adjacent support ring 100, another connecting rod 121
Distal end and axially adjacent support ring 100 on correspond to trough unit 112 left side wave bar 113 middle part connect, constitute one
Closed loop connection unit 130.As shown in figure 15, symmetrical two connecting rods 121 are arranged in eight words, the distal end of two connecting rods 121
It is connect respectively with the wave crest unit 111 of two intervals, one wave crest in support ring 100, the proximal end of connecting rod 121 and axial direction
Corresponded on adjacent supports ring 100 the right-hand wave bar 113 of wave crest unit 111 middle part connection, the proximal end of another connecting rod 121 with
Corresponded in axially adjacent support ring 100 the left side wave bar 113 of wave crest unit 111 middle part connection, the setting of connection component 120 and
It forms closed loop connection unit 130 with two axially adjacent circle support rings 100.Two closed loop connection units 130 staggeredly arrange by interval
Cloth further improves the axial bonding strength and radial support power of bracket, and ensure that the flexibility of bracket entirety.Its middle part
Partial wave bar 113 is S-shaped bar, and connecting rod is curved rod.
Remaining structure is as in the first embodiment, details are not described herein.
Embodiment seven:
As shown in figure 16, the bracket of the embodiment of the present invention seven is generally tubular in configuration, including support ring 100, connection component
120, support ring 100 and connection component 120 are successively periodically alternately arranged along axial direction, the company between adjacent three circles support ring 100
Connected components 120 are intervally arranged in the axial direction.
The structure and embodiment five of support ring 100 are consistent, unlike embodiment five, the connection component of embodiment seven
120 are uniformly distributed by two groups or more connecting rod 121 constitute respectively, wherein as shown in figure 17, two connecting rods 121 are in
Eight words arrangement, the proximal end of two connecting rods 121 respectively with two intervals, three wave crest units 111 of axially adjacent support ring 100
Trough unit 112 connect, a left side for trough unit 112 is corresponded on the distal end of a connecting rod 121 and axially adjacent support ring 100
The middle part of side wave bar 113 connects, and corresponds to trough unit 112 in the distal end of another connecting rod 121 and axially adjacent support ring 100
Right-hand wave bar 113 middle part connection, constitute a closed loop connection unit 130.
As shown in figure 18, every group of connecting rod of connection component 120 is made of symmetrical two connecting rods 121, and symmetrical one
Two connecting rods 121 of group are spaced three with two in support ring 100 respectively in eight words arrangement, the distal end of two connecting rods 121
The wave crest unit 111 of trough unit 112 connects, and corresponds to wave crest in the proximal end of a connecting rod 121 and axially adjacent support ring 100
The middle part of the left side wave bar 113 of unit 111 connects, and the proximal end of another connecting rod 121 is corresponding in axially adjacent support ring 100
The middle part of the right-hand wave bar 113 of wave crest unit 111 connects, and constitutes a closed loop connection unit 130.Two closed loop connection units
The arrangement of 130 axially spaced-aparts, centre have the overlapping of subwave bar 113 to apply in two closed loop connection units, further improve branch
The axial bonding strength and radial support power of frame, and ensure that the flexibility of bracket entirety.
Remaining structure is as in the first embodiment, details are not described herein.
Embodiment eight:
As shown in figure 19, the bracket of the embodiment of the present invention eight is generally tubular in configuration, including support ring 100, connection component
120, support ring 100 and connection component 120 are successively periodically alternately arranged along axial direction, the company between adjacent three circles support ring 100
Connected components 120 are intervally arranged in the axial direction.
The structure and embodiment five of support ring 100 are consistent, unlike embodiment five, the connection component of embodiment eight
120 are uniformly distributed by two or two or more connecting rods 121 and constitute, wherein as shown in figure 20, every group of company of connection component 120
Extension bar is made of symmetrical two connecting rods 121, symmetrical two connecting rods 121 in falling the arrangement of eight words, two connecting rods 121
Proximal end is connect with the trough unit 112 of two intervals, three wave crest units 111 of axially adjacent support ring 100 respectively, a company
The middle part connection of the right-hand wave bar 113 of trough unit 112 is corresponded on the distal end of extension bar 121 and axially adjacent support ring 100, it is another
The middle part connection of the left side wave bar 113 of trough unit 112 is corresponded on the distal end of a connecting rod 121 and axially adjacent support ring 100,
Constitute a closed loop connection unit 130.
As shown in figure 21, connection component 120 is made of two connecting rods 121, and symmetrical one group of two connecting rod 121 are in eight
Word arrangement, the distal end of two connecting rods 121 are spaced the wave crest unit of three trough units 112 with two in support ring 100 respectively
111 connect, and the right-hand wave bar 113 of wave crest unit 111 is corresponded on the proximal end of a connecting rod 121 and axially adjacent support ring 100
Middle part connection, the left side wave of wave crest unit 111 is corresponded on the proximal end of another connecting rod 121 and axially adjacent support ring 100
The middle part of bar 113 connects, and constitutes a closed loop connection unit 130.As shown in figure 19, two closed loop connection units 130 are axial
It is intervally arranged, centre has the overlapping of subwave bar 113 to apply in two closed loop connection units, further improves the axial direction of bracket
Bonding strength and radial support power, and ensure that the flexibility of bracket entirety.
Remaining structure is as in the first embodiment, details are not described herein.
Claims (12)
1. a kind of peripheral vascular stents are tubular structure, which is characterized in that the waveform support ring including multi-turn axial alignment, phase
At least one set of connection component is equipped at intervals between two adjacent circle support rings；
The support ring is formed by support unit is end to end；Each support unit includes wave crest unit, trough unit, connects
Connect the wave bar between wave crest unit and trough unit；
Connection component described in every group includes the connecting rod of at least two circumferential arrays；
Each connecting rod is fixed between the wave crest unit or trough unit and the wave bar of adjacent supports ring of a support ring.
2. peripheral vascular stents according to claim 1, which is characterized in that in same connection component, the connecting rod it
Between arranged in splayed or herringbone.
3. peripheral vascular stents according to claim 2, which is characterized in that one end of the connecting rod is fixed on a branch
On the wave crest unit or trough unit of pushing out ring, the other end be fixed on adjacent support ring wave bar middle part.
4. peripheral vascular stents according to claim 1, which is characterized in that all between two adjacent rings support ring
Connection component uniform intervals arrangement one circle, and the connecting rod in every group of connection component arrangement mode it is all identical or it is regular repeat arrange
Cloth.
5. peripheral vascular stents according to any one of claims 1-4, which is characterized in that adjacent three circles support rings it
Between the connection component that is arranged, projection in the axial direction is not overlapped or partly overlaps.
6. peripheral vascular stents according to claim 5, which is characterized in that all connection components between support ring,
Projection in axial direction is not overlapped or partly overlaps；
Or all connection components twist arrangement or staggered in the axial direction.
7. peripheral vascular stents according to claim 1, which is characterized in that the wave bar of the support unit is straight-bar, band
There are the special-shaped bar of warp architecture or arcuate structure, the wave bar and wave crest unit and trough unit is structure as a whole or the company of fixation
It connects.
8. peripheral vascular stents according to claim 1, which is characterized in that the connecting rod is straight-bar, with bending knot
The special-shaped bar or their combination of structure or arcuate structure.
9. peripheral vascular stents according to claim 7 or 8, which is characterized in that described to have warp architecture or arc knot
The special-shaped bar of structure is curved rod, the straight-bar equipped with curved portion, Z-shaped bar or S-shaped bar.
10. peripheral vascular stents according to claim 1, which is characterized in that be between the connecting rod and support unit
Integral structure is fixedly connected.
11. peripheral vascular stents according to claim 1, which is characterized in that the shape and support annular of the connecting rod
Shape cooperation, projection in the axial direction are completely overlapped or substantially overlapping with the axis projection of adjacent support ring.
12. peripheral vascular stents according to claim 1, which is characterized in that the support ring axial arranging forms isometrical
The tubular structure of extension or the tubular structure of non-isometrical extension.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711148130.XA CN108938161B (en) | 2017-11-17 | 2017-11-17 | Peripheral blood vessel stent |
| PCT/CN2018/115417 WO2019096159A1 (en) | 2017-11-17 | 2018-11-14 | Peripheral endovascular stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711148130.XA CN108938161B (en) | 2017-11-17 | 2017-11-17 | Peripheral blood vessel stent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108938161A true CN108938161A (en) | 2018-12-07 |
| CN108938161B CN108938161B (en) | 2021-07-06 |
Family
ID=64495359
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711148130.XA Active CN108938161B (en) | 2017-11-17 | 2017-11-17 | Peripheral blood vessel stent |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN108938161B (en) |
| WO (1) | WO2019096159A1 (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1331957A (en) * | 2000-03-01 | 2002-01-23 | 梅迪诺尔有限公司 | Longitudinal flexible transplant fixing device |
| DE10150547A1 (en) * | 2001-10-12 | 2003-04-30 | Qualimed Innovative Med Prod | Stent for narrow body-tubes has supporting framework of annular segments, sloping struts and curved sections |
| US6565598B1 (en) * | 1999-10-26 | 2003-05-20 | Biotronik Mess -Und Therapiegeraete Gmbh & Co. Ingenieurbuero Berlin | Stent with a closed structure |
| US20040102833A1 (en) * | 2002-11-27 | 2004-05-27 | Scimed Life Systems, Inc. | Expandable stents |
| US20070100434A1 (en) * | 2005-10-31 | 2007-05-03 | Boston Scientific Scimed, Inc. | Stent configurations |
| US20070173925A1 (en) * | 2006-01-25 | 2007-07-26 | Cornova, Inc. | Flexible expandable stent |
| CN201135516Y (en) * | 2007-12-13 | 2008-10-22 | 乐普（北京）医疗器械股份有限公司 | Variable diameter blood vessel support |
| CN201157423Y (en) * | 2008-02-29 | 2008-12-03 | 万瑞飞鸿(北京)医疗器材有限公司 | Blood vessel stent |
| US20110230959A1 (en) * | 2003-07-31 | 2011-09-22 | Abbott Cardiovascular Systems Inc. | Intravascular stent with inverted end rings |
| CN103237526A (en) * | 2010-12-06 | 2013-08-07 | 科维蒂恩有限合伙公司 | Vascular remodeling device |
| CN103945797A (en) * | 2011-11-15 | 2014-07-23 | 阿博特心血管***公司 | Offset peak-to-peak stent pattern |
| US20150265441A1 (en) * | 2008-07-09 | 2015-09-24 | Boston Scientific Scimed, Inc. | Stent with non-round cross-section in an unexpanded state |
| CN105796218A (en) * | 2016-03-08 | 2016-07-27 | 黄连军 | Covered stent |
| JP2016209128A (en) * | 2015-04-30 | 2016-12-15 | 川澄化学工業株式会社 | Stent |
| CN106535822A (en) * | 2014-07-17 | 2017-03-22 | W.L.戈尔及同仁股份有限公司 | Stent having adjacent elements connected by narrow flexible webs |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6656215B1 (en) * | 2000-11-16 | 2003-12-02 | Cordis Corporation | Stent graft having an improved means for attaching a stent to a graft |
| CN101249030B (en) * | 2008-03-18 | 2011-05-11 | 吉林省光电子产业孵化器有限公司 | Pipe network type coronary artery bracket with high radial direction anchorage force and axial direction complaisance |
| CN105012059B (en) * | 2014-08-19 | 2017-02-15 | 东莞天天向上医疗科技有限公司 | Biodegradable drug stent |
| CN104287870B (en) * | 2014-10-10 | 2017-03-29 | 先健科技(深圳)有限公司 | Intraluminal stent |
| CN106859821B (en) * | 2017-03-15 | 2018-06-15 | 大连理工大学 | A kind of biodegradable polymer intravascular stent of injection molding |
-
2017
- 2017-11-17 CN CN201711148130.XA patent/CN108938161B/en active Active
-
2018
- 2018-11-14 WO PCT/CN2018/115417 patent/WO2019096159A1/en active Application Filing
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6565598B1 (en) * | 1999-10-26 | 2003-05-20 | Biotronik Mess -Und Therapiegeraete Gmbh & Co. Ingenieurbuero Berlin | Stent with a closed structure |
| CN1331957A (en) * | 2000-03-01 | 2002-01-23 | 梅迪诺尔有限公司 | Longitudinal flexible transplant fixing device |
| DE10150547A1 (en) * | 2001-10-12 | 2003-04-30 | Qualimed Innovative Med Prod | Stent for narrow body-tubes has supporting framework of annular segments, sloping struts and curved sections |
| US20040102833A1 (en) * | 2002-11-27 | 2004-05-27 | Scimed Life Systems, Inc. | Expandable stents |
| US20110230959A1 (en) * | 2003-07-31 | 2011-09-22 | Abbott Cardiovascular Systems Inc. | Intravascular stent with inverted end rings |
| US20070100434A1 (en) * | 2005-10-31 | 2007-05-03 | Boston Scientific Scimed, Inc. | Stent configurations |
| US20070173925A1 (en) * | 2006-01-25 | 2007-07-26 | Cornova, Inc. | Flexible expandable stent |
| CN201135516Y (en) * | 2007-12-13 | 2008-10-22 | 乐普（北京）医疗器械股份有限公司 | Variable diameter blood vessel support |
| CN201157423Y (en) * | 2008-02-29 | 2008-12-03 | 万瑞飞鸿(北京)医疗器材有限公司 | Blood vessel stent |
| US20150265441A1 (en) * | 2008-07-09 | 2015-09-24 | Boston Scientific Scimed, Inc. | Stent with non-round cross-section in an unexpanded state |
| CN103237526A (en) * | 2010-12-06 | 2013-08-07 | 科维蒂恩有限合伙公司 | Vascular remodeling device |
| CN103945797A (en) * | 2011-11-15 | 2014-07-23 | 阿博特心血管***公司 | Offset peak-to-peak stent pattern |
| CN106535822A (en) * | 2014-07-17 | 2017-03-22 | W.L.戈尔及同仁股份有限公司 | Stent having adjacent elements connected by narrow flexible webs |
| JP2016209128A (en) * | 2015-04-30 | 2016-12-15 | 川澄化学工業株式会社 | Stent |
| CN105796218A (en) * | 2016-03-08 | 2016-07-27 | 黄连军 | Covered stent |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2019096159A1 (en) | 2019-05-23 |
| CN108938161B (en) | 2021-07-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102973341B (en) | Braided self-expanding type tube cavity support and manufacturing method thereof | |
| CN1882293B (en) | Vascular repair device | |
| JP5855460B2 (en) | External stent | |
| JP6106143B2 (en) | Stent member | |
| WO2017157320A1 (en) | Aortic bare stent and aortic dissection stent | |
| CN209107690U (en) | Segmented overlay film frame | |
| WO2019096158A1 (en) | Endovascular stent | |
| JP6278973B2 (en) | Vascular implant with asymmetric stent spring | |
| CN210301319U (en) | Coated vascular stent with improved wall-adhering performance | |
| CN108670509A (en) | A kind of self-expansion type taper coronary stent | |
| CN108938160A (en) | Bracket for nearly bifurcation lesion | |
| CN109431664A (en) | A kind of intravascular stent of asymmetric | |
| CN110623780A (en) | Sectional type tectorial membrane stent and preparation method thereof | |
| CN109793600A (en) | A kind of bracket for nearly bifurcation lesion | |
| CN107569311A (en) | Ring holder | |
| CN106361478B (en) | A kind of mixed type balloon-expandable intravascular stent | |
| CN208851726U (en) | Peripheral vascular stents | |
| CN107397610A (en) | Overlay film frame | |
| CN113877043A (en) | Nicked wire balloon and nicked wire balloon dilatation catheter device | |
| CN209285856U (en) | A kind of intravascular stent of high-flexibility | |
| CN209661888U (en) | A kind of segmented bare bracket | |
| CN108938161A (en) | Peripheral vascular stents | |
| CN109966016A (en) | Overlay film frame | |
| CN204411036U (en) | Intravascular stent | |
| CN202982316U (en) | Self-expanding type knitted tube bracket |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |