CN115844605A - Artery blood vessel support - Google Patents
Artery blood vessel support Download PDFInfo
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- CN115844605A CN115844605A CN202310130849.XA CN202310130849A CN115844605A CN 115844605 A CN115844605 A CN 115844605A CN 202310130849 A CN202310130849 A CN 202310130849A CN 115844605 A CN115844605 A CN 115844605A
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Abstract
The invention discloses an arterial stent, belonging to the technical field of medical instruments; the arterial stent is a reticular cylindrical structure formed by coiling a primary skeleton and a secondary skeleton; the primary skeleton is formed by a plurality of first filaments which are spirally formed by 360 degrees; the secondary scaffold is formed by a plurality of second filaments which are twisted by 720 degrees; the wire diameter of the first filament is larger than that of the second filament, and the intersection points of the first filament and the second filament are connected; the function of the primary framework is to change the blood flow state when the blood flow passes through the stent; the second-stage framework has the function of enhancing the strength of the swirling flow on the basis of connecting the first-stage framework; can increase blood perfusion to the bifurcated vessels; the increase affects the transport of substances between the blood and the vessel wall.
Description
Technical Field
The invention belongs to the technical field of medical instruments, and particularly relates to an arterial blood vessel stent.
Background
The blood vessel has a low wall shear force area, and the neointimal hyperplasia after the stent bypass operation and the arteriovenous shunt operation can cause the blood vessel blockage. The possibility of thrombus formation is increased by too high an index of the oscillating shear force at the anastomosis between the artificial vessel and the host and too long a relative residence time of the particles. LDL accumulates on the vessel wall and is oxidized to form Ox-LDL, which can necrotize and disintegrate macrophages and vascular smooth muscle cells to form atheromatous necrotic tissue. Stenting has three effects on the artery being treated: causing structural damage, introducing foreign bodies, and altering local hemodynamics. These three effects initiate and influence four interacting biological processes that can lead to stent artery restenosis.
Most typical vascular stents are net-shaped tubular structures formed by metal microtubules, and when in use, under the supervision of medical imaging equipment, medical instruments such as puncture needles, catheters and the like are utilized to deliver the stents to lesion sites through arteries, and then the stents are expanded to open the lesion arteries, so that the treatment purpose is achieved. The swirling flow can generate enhanced wall shear force, the blood flow speed close to the wall surface is improved, the oscillation shear force index is greatly reduced, the low wall shear force is thoroughly eliminated, and the transportation of oxygen between the blood and the blood can be influenced. Therefore, how to improve the swirling flow in the blood flowing process in the blood vessel is the key for improving the performance of the arterial blood vessel stent.
Disclosure of Invention
The invention overcomes the defects of the prior art and provides an arterial blood vessel stent; the artery stent has the function of supporting blood vessels by the existing stent, realizes the change of the flow state of blood flow by the artery stent and introduces swirl flow with more distinct advantages into a human body.
In order to achieve the above object, the present invention is achieved by the following technical solutions.
An arterial blood vessel stent is a reticular cylindrical structure formed by coiling a primary skeleton and a secondary skeleton; the primary skeleton is formed by a plurality of first filaments which are spirally formed by 360 degrees; the secondary scaffold is formed by a plurality of second filaments which are twisted by 720 degrees; the first filament has a larger wire diameter than the second filament, and the crossing point of the first and second filaments is connected.
Further, the plurality of first filaments are parallel.
Still further, the plurality of second filaments are parallel.
Further, the first filament and the second filament are both metal wires.
Further, the wire diameter of the first filament is 0.5mm; the wire diameter of the second filament is 0.3mm.
Furthermore, the diameter of the reticular cylindrical structure is less than or equal to 10.5mm.
Further, the first filament and the second filament are 6 filaments each.
Compared with the prior art, the invention has the following beneficial effects:
the invention relates to a stent formed by coiling a primary framework and a secondary framework, wherein the primary framework is used for changing the flow state of blood flow when the blood flow flows through the stent; the second-stage framework has the function of enhancing the strength of the swirling flow on the basis of connecting the first-stage framework.
The blood vessel stent leads the flow state of the swirling flow into a human body after being formed by the stent, and the blood flow in the flow state can sweep out a swirl area, a separation area and a blood flow disorder area, so that the blood flow is more stable; improving the wall shear force, and assisting in treating vascular diseases such as atherosclerosis, intimal hyperplasia, thrombus adhesion and the like; can increase blood perfusion to the bifurcated vessels; the increase affects the transport of substances between the blood and the vessel wall.
Drawings
Fig. 1 is a schematic structural diagram of an arterial stent according to the present invention.
In the figure, 1 is a first filament and 2 is a second filament.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail with reference to the embodiments and the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. The technical solution of the present invention is described in detail below with reference to the embodiments and the drawings, but the scope of protection is not limited thereto.
Referring to fig. 1, the present embodiment provides an arterial stent, which has a mesh-like cylindrical structure formed by coiling a primary scaffold and a secondary scaffold; the primary skeleton is formed by six first filaments 1 which are spirally formed for 360 degrees; the secondary scaffold is formed by six second filaments 2 which are twisted by 720 degrees; the wire diameter of the first wire 1 is larger than that of the second wire 2, and the intersection of the first wire 1 and the second wire 2 is connected.
In particular, six first filaments 1 are parallel to each other and six second filaments 2 are parallel to each other. The six first filaments 1 and the six second filaments 2 form a grid-like structure.
The first filament 1 and the second filament 2 are wires made of the same material. The wire diameter of the first filament 1 is 0.5mm; the wire diameter of the second filaments 2 was 0.3mm. The diameter of the formed reticular cylindrical structure is not more than 10.5mm at most.
The above is a further detailed description of the present invention with reference to specific preferred embodiments, which should not be considered as limiting the invention to the specific embodiments described herein, but rather as a matter of simple derivation or substitution within the scope of the invention as defined by the appended claims, it will be understood by those skilled in the art to which the invention pertains.
Claims (7)
1. An arterial blood vessel stent is characterized in that the stent is a reticular cylindrical structure formed by coiling a primary skeleton and a secondary skeleton; the primary skeleton is formed by a plurality of first filaments (1) which are spirally formed by 360 degrees; the secondary skeleton is formed by a plurality of second filaments (2) which are twisted by 720 degrees; the wire diameter of the first wire (1) is larger than that of the second wire (2), and the intersection of the first wire (1) and the second wire (2) is connected.
2. An arterial stent according to claim 1, characterised in that said first filaments (1) are parallel.
3. An arterial stent according to claim 2, characterised in that said second filaments (2) are parallel.
4. An arterial stent according to claim 1, characterised in that said first filaments (1) and said second filaments (2) are both metal filaments.
5. An arterial stent according to claim 1, characterised in that the wire diameter of the first filaments (1) is 0.5mm; the wire diameter of the second filiform object (2) is 0.3mm.
6. An arterial stent according to claim 1 wherein the diameter of said reticular cylindrical structure is less than or equal to 10.5mm.
7. An arterial stent according to claim 1, characterised in that said first filaments (1) and said second filaments (2) are 6 filaments each.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310130849.XA CN115844605B (en) | 2023-02-17 | 2023-02-17 | Arterial vessel stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310130849.XA CN115844605B (en) | 2023-02-17 | 2023-02-17 | Arterial vessel stent |
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| Publication Number | Publication Date |
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| CN115844605A true CN115844605A (en) | 2023-03-28 |
| CN115844605B CN115844605B (en) | 2023-05-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202310130849.XA Active CN115844605B (en) | 2023-02-17 | 2023-02-17 | Arterial vessel stent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117224297A (en) * | 2023-11-13 | 2023-12-15 | 太原理工大学 | Lower limb artery stent with reverse combined structure |
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| CN216754738U (en) * | 2021-10-08 | 2022-06-17 | 江西安弘瑞科技有限公司 | Wave-shaped intravascular stent |
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2023
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| CN1204535A (en) * | 1998-07-09 | 1999-01-13 | 冶金工业部钢铁研究总院 | Compound medicinal blood vessel internal support |
| US20020035394A1 (en) * | 1998-09-05 | 2002-03-21 | Jomed Gmbh | Methods and apparatus for stenting comprising enhanced embolic protection, coupled with improved protection against restenosis and thrombus formation |
| CN2390618Y (en) * | 1999-10-30 | 2000-08-09 | 杨大智 | Wave shape corti's tunnel net type coronary artery support |
| CA2519437A1 (en) * | 2003-03-18 | 2004-09-30 | Veryan Medical Limited | Helical stent |
| WO2009104041A1 (en) * | 2008-02-21 | 2009-08-27 | Valerian Voinov | Implantable prosthetic valve stent |
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| CN103356314A (en) * | 2012-03-30 | 2013-10-23 | 曼利国际有限公司 | Coil bioabsorbable stent |
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| EP3207902A1 (en) * | 2016-02-19 | 2017-08-23 | Cook Medical Technologies LLC | Spiral flow inducing stent and cannula cut method of making same |
| EP3308750A1 (en) * | 2016-10-17 | 2018-04-18 | Cook Medical Technologies LLC | A balloon expandable stent for inducing spiral flow |
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| WO2020150023A1 (en) * | 2019-01-18 | 2020-07-23 | Neurogami Medical, Inc. | Vascular implant |
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| CN111467099A (en) * | 2020-04-16 | 2020-07-31 | 四川大学华西医院 | Intravascular multilayer bare stent system |
| CN113244462A (en) * | 2021-05-20 | 2021-08-13 | 太原理工大学 | Drug-coated intravascular stent for preventing restenosis in stent and preparation method thereof |
| CN216754738U (en) * | 2021-10-08 | 2022-06-17 | 江西安弘瑞科技有限公司 | Wave-shaped intravascular stent |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117224297A (en) * | 2023-11-13 | 2023-12-15 | 太原理工大学 | Lower limb artery stent with reverse combined structure |
| CN117224297B (en) * | 2023-11-13 | 2024-02-13 | 太原理工大学 | Lower limb artery stent with reverse combined structure |
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| Publication number | Publication date |
|---|---|
| CN115844605B (en) | 2023-05-16 |
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