CN213217930U - Multilayer degradable magnesium alloy coronary stent - Google Patents
Multilayer degradable magnesium alloy coronary stent Download PDFInfo
- Publication number
- CN213217930U CN213217930U CN202021080509.9U CN202021080509U CN213217930U CN 213217930 U CN213217930 U CN 213217930U CN 202021080509 U CN202021080509 U CN 202021080509U CN 213217930 U CN213217930 U CN 213217930U
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- magnesium alloy
- alloy layer
- layer
- polylactic acid
- main part
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Abstract
The utility model discloses a multilayer degradable magnesium alloy coronary artery support, including the main part, the main part is formed by laser sculpture, the main part outside-in divide into the three-layer, is outer magnesium alloy layer, polylactic acid fibrous layer and interior magnesium alloy layer in proper order, and the polylactic acid fibrous layer will be outer magnesium alloy layer and interior magnesium alloy layer bonding through the spraying. The utility model has the advantages of reasonable design, when outer magnesium alloy layer or interior magnesium alloy layer take place to degrade and lead to the main part fracture, polylactic acid fibrous layer is owing to in inside, not degrading yet, consequently can hold the material that probably dissociates, does not let it along with blood flow, avoids the material to flow into the brain and takes place apoplexy, and polylactic acid fibrous layer is degradable material equally, consequently can not remain in vivo.
Description
Technical Field
The utility model relates to a multilayer degradable magnesium alloy coronary artery support.
Background
The coronary artery stent prepared from the degradable material is generally of an integrated structure, when the degradable material is degraded, the stent is disintegrated, and part of the degradable material can flow to the brain along with blood to generate stroke, so that the rehabilitation of a stent user is not facilitated.
SUMMERY OF THE UTILITY MODEL
The utility model relates to a multilayer degradable magnesium alloy coronary artery stent, which is used for reducing the free probability of materials.
To achieve the purpose, the utility model adopts the structure that: the multi-layer degradable magnesium alloy coronary stent comprises a main body, wherein the main body is formed by laser engraving, the main body is divided into three layers from outside to inside, and the three layers are an outer magnesium alloy layer, a polylactic acid fiber layer and an inner magnesium alloy layer in sequence, the polylactic acid fiber layer is sprayed between the outer magnesium alloy layer and the inner magnesium alloy layer, the outer magnesium alloy layer and the inner magnesium alloy layer are firmly bonded through extension pressing, and the outer magnesium alloy layer and the inner magnesium alloy layer are of degradable magnesium alloy structures.
The beneficial effects are as follows: the utility model has the advantages of reasonable design, when outer magnesium alloy layer or interior magnesium alloy layer take place to degrade and lead to the main part fracture, polylactic acid fibrous layer is owing to in inside, not degrading yet, consequently can hold the material that probably dissociates, does not let it along with blood flow, avoids the material to flow into the brain and takes place apoplexy, and polylactic acid fibrous layer is degradable material equally, consequently can not remain in vivo.
Drawings
The invention will now be described, by way of example, with reference to the accompanying drawings, in which:
FIG. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic sectional structure of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
The multi-layer degradable magnesium alloy coronary stent shown in fig. 1 comprises a main body, wherein the main body is formed by laser engraving, the main body is divided into three layers from outside to inside, as shown in fig. 2, an outer magnesium alloy layer 1, a polylactic acid fiber layer 3 and an inner magnesium alloy layer 2 are sequentially arranged, the polylactic acid fiber layer 3 is sprayed between the outer magnesium alloy layer 1 and the inner magnesium alloy layer 2, the outer magnesium alloy layer 1 and the inner magnesium alloy layer 2 are firmly bonded through extension and pressing, after extension and pressing, the thickness of the main body is 110-120 μm, and the outer magnesium alloy layer 1 and the inner magnesium alloy layer 2 are of a degradable magnesium alloy structure.
The utility model has the advantages of reasonable design, when outer magnesium alloy layer or interior magnesium alloy layer take place to degrade and lead to the main part fracture, polylactic acid fibrous layer is owing to in inside, not degrading yet, consequently can hold the material that probably dissociates, does not let it along with blood flow, avoids the material to flow into the brain and takes place apoplexy, and polylactic acid fibrous layer is degradable material equally, consequently can not remain in vivo.
The present invention is not limited to the foregoing embodiments. The invention extends to any novel feature or any novel combination of features disclosed in this specification, and to any novel method or process steps or any novel combination of features disclosed.
Claims (1)
1. The multi-layer degradable magnesium alloy coronary stent comprises a main body and is characterized in that the main body is formed by laser engraving, the main body is divided into three layers from outside to inside, the three layers are an outer magnesium alloy layer (1), a polylactic acid fiber layer (3) and an inner magnesium alloy layer (2) in sequence, the polylactic acid fiber layer (3) is sprayed between the outer magnesium alloy layer (1) and the inner magnesium alloy layer (2), the outer magnesium alloy layer (1) and the inner magnesium alloy layer (2) are firmly bonded through extension pressing, and the outer magnesium alloy layer (1) and the inner magnesium alloy layer (2) are of a degradable magnesium alloy structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021080509.9U CN213217930U (en) | 2020-06-12 | 2020-06-12 | Multilayer degradable magnesium alloy coronary stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021080509.9U CN213217930U (en) | 2020-06-12 | 2020-06-12 | Multilayer degradable magnesium alloy coronary stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213217930U true CN213217930U (en) | 2021-05-18 |
Family
ID=75884495
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021080509.9U Expired - Fee Related CN213217930U (en) | 2020-06-12 | 2020-06-12 | Multilayer degradable magnesium alloy coronary stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213217930U (en) |
-
2020
- 2020-06-12 CN CN202021080509.9U patent/CN213217930U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| 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: 20210518 |