CN107485473B - A kind of lower extremities vascular opening device - Google Patents
A kind of lower extremities vascular opening device Download PDFInfo
- Publication number
- CN107485473B CN107485473B CN201710841693.0A CN201710841693A CN107485473B CN 107485473 B CN107485473 B CN 107485473B CN 201710841693 A CN201710841693 A CN 201710841693A CN 107485473 B CN107485473 B CN 107485473B
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- CN
- China
- Prior art keywords
- bracket
- hole
- opening device
- lower extremities
- via hole
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- 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.)
- Expired - Fee Related
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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
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- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
A kind of lower extremities vascular opening device, it is related to medical apparatus technical field；It includes bracket；It is the round tube shape structure surrounded by several basic hole interlaced arrangements in the middle part of the bracket；The both ends of the bracket are the round tube shape structures surrounded that interlocked by basic hole and via hole；The vertical W shape support unit that the basic hole is oppositely arranged by two surrounds；The support unit is formed by connecting by several supporting ribs；The via hole is the diamond shaped structure being formed by connecting by several supporting ribs.A kind of lower extremities vascular opening device of the present invention, radial rigidity can be significantly improved, also guarantee that it has preferable axial flexibility and lower metal coverage rate simultaneously, therefore, amount of metal can be effectively reduced, to reduce stent restenosis rate, the present invention has many advantages, such as that structure is simple, setting is reasonable, low manufacture cost.
Description
Technical field
The present invention relates to medical apparatus technical fields, and in particular to a kind of lower extremities vascular opening device.
Background technique
Cardiovascular disease is current one of the principal disease for threatening human life.Intravascular stent implantation is current treatment blood
Manage the main method of narrow caused coronary heart disease.The major function of bracket is that remodeling and keeps its circulation at occluding vascular, but
Postoperative restenosis phenomenon can occur in clinical application at present, seriously constrain the actual efficacy of intravascular stent.Restenosis occurs
The reason of it is more complex, be widely considered to be at present due to smooth muscle cell in the inflammatory reaction of blood vessel after stenter to implant and vascular repair
Hyperplasia and caused by.Therefore the damage and stimulation to blood vessel are reduced in stent implantation procedure, are to reduce restenosis rate
One of important means.There are much relations to the degree of injury and support Design of blood vessel endothelium.It is carried out currently with finite element method
Deformation process is simplified when support Design, i.e., does not consider that the pressure of bracket holds process.Not only can in fact, pressure holds process
Cause the shape for expanding after-poppet to change, while rebound degree and maximum stress can be made to increase, the maximum expansible diameter of bracket
Become smaller.
Currently, basic unit of most of intravascular stent all using symmetrical or diamond structure as bracket, this bracket
Radial rigidity is poor, and axial flexibility is poor, and metal coverage rate is high, and amount of metal is more, so as to cause postoperative restenosis phenomenon.
Summary of the invention
In view of the defects and deficiencies of the prior art, the present invention intends to provide a kind of simple structure and reasonable design, make
With convenient lower extremities vascular opening device.
To achieve the above object, the technical solution adopted by the present invention is that: it include bracket；Be in the middle part of the bracket by
The round tube shape structure that several basic hole interlaced arrangements surround；The both ends of the bracket are staggeredly surrounded by basic hole and via hole
Round tube shape structure；The vertical W shape support unit that the basic hole is oppositely arranged by two surrounds；The support unit by
Several supporting ribs are formed by connecting；The via hole is the diamond shaped structure being formed by connecting by several supporting ribs；The auxiliary
Angle between the supporting rib of upper end two in hole is γ, and γ is 65 ~ 75 °, the folder between the supporting rib of lower end two of via hole
Angle is δ, and δ is 85 ~ 95 °.
Preferably, the angle between the supporting rib of the upper end of the support unit two is α, and α is 40 ~ 85 °, support
Angle between the supporting rib of upper end two of unit is β, and β is 90 ~ 120 °.
Preferably, rounded feature is arranged in the junction of adjacent two supporting ribs.
The principle of the present invention are as follows: with the increase of degree of asymmetry, in a certain range, same point is under lateral displacement
Drop, i.e. transverse structure rigidity are strengthened, meanwhile, longitudinal that micro-displacement occurs, i.e. structure is rotated；Therefore, both ends
The via hole of diamond structure counteracts structure rotation, and the asymmetric basic hole at middle part has non-deformability；Both ends it is basic
Hole and via hole composite structure form ensure that both ends flush.
After adopting the above structure, the present invention is the beneficial effects are as follows: a kind of lower extremities of the present invention are used
Vascular opening device can significantly improve radial rigidity, while also guarantee that it has preferable axial flexibility and lower gold
Therefore amount of metal can be effectively reduced by belonging to coverage rate, to reduce stent restenosis rate, the present invention is simple with structure, setting is closed
The advantages that reason, low manufacture cost.
Detailed description of the invention
Fig. 1 is structure chart of the invention；
Fig. 2 is the structure chart in basic hole of the invention；
Fig. 3 is the structure chart of via hole of the present invention；
Fig. 4 is present embodiment operation structure chart.
Description of symbols:
Bracket 1, basic hole 2, via hole 3, support unit 4, supporting rib 5, rounded feature 6, round tube 7.
Specific embodiment
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention without any creative labor, may be used also for those of ordinary skill in the art
To obtain other drawings based on these drawings.
Referring to such as Fig. 1 --- shown in Fig. 3, present embodiment adopts the following technical scheme that it includes bracket 1；It is described
The middle part of bracket 1 be the round tube shape structure surrounded by several basic 2 interlaced arrangements of hole；The both ends of the bracket 1 are by base
The round tube shape structure that this hole 2 and via hole 3 staggeredly surround；The basic hole 2 is single by the two vertical W shape being oppositely arranged supports
Member 4 surrounds；The support unit 4 is formed by connecting by several supporting ribs 5；The via hole 3 is connected by several supporting ribs 5
Made of diamond shaped structure；Angle between the supporting rib 5 of upper end two of the via hole 3 is γ, and γ is 65 ~ 75 °, auxiliary
The angle helped between the supporting rib 5 of lower end two in hole 3 is δ, and δ is 85 ~ 95 °.
Preferably, the angle between the supporting rib 5 of the upper end of the support unit 4 two is α, and α is 40 ~ 85 °, branch
The angle supportted between the supporting rib 5 of upper end two of unit 4 is β, and 90 ~ 120 ° of β.
Preferably, rounded feature 6 is arranged in the junction of adjacent two supporting ribs 5.
The principle of present embodiment are as follows: with the increase of degree of asymmetry, in a certain range, same point is in transverse direction
Displacement decline, i.e. transverse structure rigidity strengthened, meanwhile, longitudinal that micro-displacement occurs, i.e. structure is rotated；Cause
This, the via hole 3 of the diamond structure at both ends counteracts structure rotation, and the asymmetric basic hole at middle part has non-deformability；
The basic hole 2 at both ends and 3 composite structure form of via hole ensure that both ends flush.
Referring to as shown in figure 4, present embodiment operating process: pressure being held machine and is modeled to the variable rigid body round tube of internal diameter
7, the appearance face contact of inner surface and bracket 1, and establish and contact between bracket 1 and 7 inner surface of round tube, by changing round tube 7
Internal diameter to bracket 1 carry out pressure hold, and thus selection interlock layout structure in translation distance.
After adopting the above structure, present embodiment is the beneficial effects are as follows: one described in present embodiment
Kind lower extremities vascular opening device, can significantly improve radial rigidity, while it is preferable axial also to guarantee that it has
Therefore flexibility and lower metal coverage rate can effectively reduce amount of metal, to reduce stent restenosis rate, this is specific real
The mode of applying has many advantages, such as that structure is simple, setting is reasonable, low manufacture cost.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (3)
1. a kind of lower extremities vascular opening device, it is characterised in that: it includes bracket；It is in the middle part of the bracket
The round tube shape structure surrounded by several basic hole interlaced arrangements；The both ends of the bracket are staggeredly enclosed by basic hole and via hole
At round tube shape structure；The vertical W shape support unit that the basic hole is oppositely arranged by two surrounds；The support unit
It is formed by connecting by several supporting ribs；The via hole is the diamond shaped structure being formed by connecting by several supporting ribs；Described is auxiliary
The angle helped between the supporting rib of upper end two in hole is γ, and γ is 65 ~ 75 °, between the supporting rib of lower end two of via hole
Angle is δ, and δ is 85 ~ 95 °.
2. a kind of lower extremities vascular opening device according to claim 1, it is characterised in that: the support
Angle between the supporting rib of upper end two of unit is α, and α is 40 ~ 85 °, between the supporting rib of upper end two of support unit
Angle is β, and β is 90 ~ 120 °.
3. a kind of lower extremities vascular opening device according to claim 1, it is characterised in that: adjacent two branch
Rounded feature is arranged in the junction for supportting muscle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710841693.0A CN107485473B (en) | 2017-09-18 | 2017-09-18 | A kind of lower extremities vascular opening device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710841693.0A CN107485473B (en) | 2017-09-18 | 2017-09-18 | A kind of lower extremities vascular opening device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107485473A CN107485473A (en) | 2017-12-19 |
| CN107485473B true CN107485473B (en) | 2019-02-01 |
Family
ID=60651916
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710841693.0A Expired - Fee Related CN107485473B (en) | 2017-09-18 | 2017-09-18 | A kind of lower extremities vascular opening device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107485473B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2003047460A2 (en) * | 2001-12-03 | 2003-06-12 | Intek Technology L.L.C. | Temporary, repositionable or retrievable intraluminal devices |
| US7575591B2 (en) * | 2003-12-01 | 2009-08-18 | Cordis Corporation | Prosthesis graft with Z pleating |
| US20060155362A1 (en) * | 2005-01-13 | 2006-07-13 | Israel Henry M | Stent with expandable aperture |
| US7291166B2 (en) * | 2005-05-18 | 2007-11-06 | Advanced Cardiovascular Systems, Inc. | Polymeric stent patterns |
| KR100883329B1 (en) * | 2007-08-21 | 2009-02-11 | 주식회사 에스앤지바이오텍 | Drug releasing membrane for stent and drug releasing stent for expending intra luminal comprising the same |
-
2017
- 2017-09-18 CN CN201710841693.0A patent/CN107485473B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN107485473A (en) | 2017-12-19 |
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| 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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20190201 Termination date: 20210918 |