CN221331563U - Vertebral artery stent for reducing restenosis in stent - Google Patents
Vertebral artery stent for reducing restenosis in stent Download PDFInfo
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- CN221331563U CN221331563U CN202322101770.2U CN202322101770U CN221331563U CN 221331563 U CN221331563 U CN 221331563U CN 202322101770 U CN202322101770 U CN 202322101770U CN 221331563 U CN221331563 U CN 221331563U
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- stent
- section
- hollow tubular
- straight section
- tubular straight
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- 208000037803 restenosis Diseases 0.000 title claims abstract description 37
- 210000002385 vertebral artery Anatomy 0.000 title claims abstract description 21
- 210000002489 tectorial membrane Anatomy 0.000 claims abstract description 8
- 239000011248 coating agent Substances 0.000 claims description 14
- 238000000576 coating method Methods 0.000 claims description 14
- 239000011148 porous material Substances 0.000 claims description 13
- -1 polytetrafluoroethylene Polymers 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 10
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 10
- 239000000463 material Substances 0.000 claims 1
- 239000012982 microporous membrane Substances 0.000 claims 1
- 238000012800 visualization Methods 0.000 claims 1
- 210000004204 blood vessel Anatomy 0.000 description 8
- 238000006073 displacement reaction Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 239000002861 polymer material Substances 0.000 description 5
- 210000003270 subclavian artery Anatomy 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 4
- 229920002635 polyurethane Polymers 0.000 description 4
- 239000004814 polyurethane Substances 0.000 description 4
- 238000001356 surgical procedure Methods 0.000 description 4
- 238000004873 anchoring Methods 0.000 description 3
- 208000005189 Embolism Diseases 0.000 description 2
- 208000031481 Pathologic Constriction Diseases 0.000 description 2
- 230000010339 dilation Effects 0.000 description 2
- 208000028867 ischemia Diseases 0.000 description 2
- 230000007170 pathology Effects 0.000 description 2
- 230000036262 stenosis Effects 0.000 description 2
- 208000037804 stenosis Diseases 0.000 description 2
- 201000001320 Atherosclerosis Diseases 0.000 description 1
- 206010058558 Hypoperfusion Diseases 0.000 description 1
- 206010072052 Plaque shift Diseases 0.000 description 1
- 208000001435 Thromboembolism Diseases 0.000 description 1
- 206010047330 Vertebral artery stenosis Diseases 0.000 description 1
- 201000006559 Vertebrobasilar insufficiency Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005253 cladding Methods 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000007505 plaque formation Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
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- Prostheses (AREA)
Abstract
The utility model discloses a vertebral artery stent for reducing restenosis in the stent, which belongs to the technical field of medical equipment and comprises the following components: the bracket comprises a bracket body and a tectorial membrane, wherein the bracket body comprises a hollow tubular straight section and a bell mouth section which are connected in sequence along the length direction; the utility model has the advantages of preventing restenosis in the bracket, facilitating secondary operation, preventing plaque from growing into the bracket and greatly reducing restenosis rate in the bracket.
Description
Technical Field
The utility model belongs to the technical field of medical equipment, and particularly relates to a vertebral artery stent for reducing restenosis in the stent.
Background
Vertebral artery stenosis often occurs due to atherosclerosis, plaque formation and other factors, and the stenosis at the beginning of the vertebral artery accounts for about 25% -30% of post-circulatory stroke, and participates in post-circulatory ischemia through a mechanism of thromboembolism, hypoperfusion and a mixture of the two, once the occurrence of the post-circulatory ischemia seriously affects the life quality of a patient.
In the published patent application number CN201910497297.X, a vertebral artery stent is disclosed, which comprises a first inclined stent, one side of the first inclined stent is fixedly connected with a second inclined stent, one side of the second inclined stent is fixedly connected with a first bifurcation stent, one side of the first bifurcation stent is fixedly connected with a second bifurcation stent, one ends of the first inclined stent and the second inclined stent are fixedly connected with a linear supporting stent, the outer surface of the linear supporting stent is fixedly connected with an annular expanding stent, the existing vertebral artery stent adopts a metal bare mode and cannot completely cure restenosis of blood vessels, thereby causing restenosis in the stent, and the drug coating stent only delays the occurrence time of restenosis, but not inhibits restenosis. Therefore, how to provide a stent for treating the stenosis of the initial part of the vertebral artery, which can be matched with the wall of the blood vessel to reduce the restenosis in the stent is a problem which needs to be solved by the person skilled in the art.
Disclosure of utility model
In view of the above, the utility model provides a vertebral artery stent for reducing restenosis in the stent, which can effectively enable the stent to be matched with the vessel wall, not only can further prevent restenosis in the stent, but also is convenient for the intravascular super-selection of a passage in secondary operation, and can effectively prevent plaque from growing into the stent on the basis of pathology, thereby greatly reducing the restenosis rate in the stent.
In order to achieve the above purpose, the present utility model adopts the following technical scheme:
A vertebral artery stent for reducing restenosis within the stent, comprising: the bracket comprises a bracket body and a tectorial membrane, wherein the bracket body comprises a hollow tubular straight section and a bell mouth section which are connected in sequence along the length direction; the horn mouth section is fixedly matched with one end of the hollow tubular straight section, and the coating film is coated on the hollow tubular straight section.
Further, the diameter of the flare section gradually increases from one end close to the hollow tubular straight section to one end far away from the hollow tubular straight section.
Further, a developing mark is provided between the hollow tubular straight section and the flare section.
Further, the coating film is made of a polymer material, and is provided with micropores, wherein the pore diameter of the micropores is 0.3-10 mu m.
Further, the film thickness is 1 μm to 200 μm.
Further, the pore diameter of the micropore gradually increases from one end close to the flare section to one end far away from the flare section.
Further, the coating film adopts a polytetrafluoroethylene microporous film, and the micropore diameter is 0.3-2 mu m.
Further, the hollow tubular straight section has a length of 8-18mm and a diameter of 2-8mm.
Further, the diameter of the end of the flare section far away from the hollow tubular straight section is 3-10mm.
Further, the flare section has a length of 2-3mm in an axial direction along the hollow tubular straight section.
The utility model has the beneficial effects that:
The utility model has convenient use, and the proximal end of the stent is provided with the horn mouth section, so that on one hand, the stent can be effectively prevented from being displaced, and on the other hand, under the condition of restenosis, the establishment of a passage is facilitated, the stent in the subclavian artery can be effectively matched with the vessel wall, the restenosis in the stent can be further prevented, and the intravascular super-selection of the passage during the secondary operation is facilitated; through with the tectorial membrane cladding on the support body, can effectually prevent plaque on the pathology basis to the support ingrowth to very big reduction restenosis in the support, the plaque shift to distal end appears in this kind of support of micropore can effectually prevent in the operation in-process to the plaque escape has reduced the risk that causes distal end embolism.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present utility model, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of the embodiment 1 of the present utility model in axial section;
FIG. 2 is a schematic axial sectional view of embodiment 2 of the present utility model;
FIG. 3 is a schematic view showing the structure of embodiment 3 of the present utility model in axial section;
FIG. 4 is a schematic view of a development mark location;
Wherein, in the figure:
1-a bracket body; 2-coating; 3-microwells; 4-developing the mark.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Example 1
Referring to fig. 1 and 4, the present utility model provides a vertebral artery stent for reducing restenosis in a stent, comprising: the bracket comprises a bracket body 1 and a tectorial membrane 2, wherein the bracket body 1 comprises a hollow tubular straight section and a bell mouth section which are connected in sequence along the length direction; the horn mouth section is fixedly matched with one end of the hollow tubular straight section, and the coating film 2 is coated on the hollow tubular straight section.
In the embodiment, the length of the hollow tubular straight section is 8-18mm, and the diameter is 2-8mm; the length of the flare section along the axial direction of the hollow tubular straight section is 2-3mm, the diameter of the flare section close to one end of the hollow tubular straight section is 3-10mm, on one hand, the displacement of the stent can be effectively prevented, on the other hand, under the condition of restenosis, the establishment of a passage is facilitated, the stent starting part is the flare section, the stent in the subclavian artery can be effectively matched with the vessel wall, the restenosis in the stent can be further prevented, and the intravascular superselection of the passage during secondary operation is facilitated.
In this embodiment, a developing mark 4 is disposed between the hollow tubular straight section and the flare section, so that the stent body 1 and the covering film 2 can be positioned during surgery.
In this embodiment, the coating 2 is made of a polymer material, including polytetrafluoroethylene, polyester, polyurethane, etc.; the covering film 2 is provided with micropores, the pore diameter of the micropores is 0.3-10 mu m, preferably, the covering film 2 adopts a polytetrafluoroethylene microporous film, the pore diameter of the micropores is 0.3-2 mu m, the thickness of the covering film 2 is 1-200 mu m, and the stent body 1 and the covering film 2 can reduce the risk of plaque displacement in the release process.
Example 2
Referring to fig. 2 and 4, the present utility model provides a vertebral artery stent for reducing restenosis in a stent, comprising: the bracket comprises a bracket body 1 and a tectorial membrane 2, wherein the bracket body 1 comprises a hollow tubular straight section and a bell mouth section which are connected in sequence along the length direction; the horn mouth section is fixedly matched with one end of the hollow tubular straight section, the hollow tubular straight section is not covered with a film 2 at the position 2-3mm away from one end of the horn mouth section, other parts of the hollow tubular straight section are covered with the film 2, and the non-covered stent body can increase the anchoring force of the stent body and a blood vessel on one hand, so that the risk of shifting after the stent body is implanted into the blood vessel is greatly reduced, and on the other hand, the endothelialization of the stent is facilitated.
In the embodiment, the length of the hollow tubular straight section is 8-18mm, and the diameter is 2-8mm; the length of the flare section along the axial direction of the hollow tubular straight section is 2-3mm, the diameter of one end of the flare section far away from the hollow tubular straight section is 3-10mm, on one hand, the displacement of the stent can be effectively prevented, on the other hand, under the condition of restenosis, the establishment of a passage is facilitated, the stent starting part is the flare section, the stent in the subclavian artery can be effectively matched with the vessel wall, the restenosis in the stent can be further prevented, and the intravascular superselection of the passage during secondary operation is facilitated.
In this embodiment, a developing mark 4 is disposed between the hollow tubular straight section and the flare section, so that the stent body 1 and the covering film 2 can be positioned during surgery.
In this embodiment, the coating 2 is made of a polymer material, including polytetrafluoroethylene, polyester, polyurethane, etc.; the covering film 2 is provided with micropores, the pore diameter of the micropores is 0.3-10 mu m, preferably, the covering film 2 adopts a polytetrafluoroethylene microporous film, the pore diameter of the micropores is 0.3-2 mu m, the thickness of the covering film 2 is 1-200 mu m, and the stent body 1 and the covering film 2 can reduce the risk of plaque displacement in the release process.
Example 3
Referring to fig. 3 and 4, the present utility model provides a vertebral artery stent for reducing restenosis in a stent, comprising: the bracket comprises a bracket body 1 and a tectorial membrane 2, wherein the bracket body 1 comprises a hollow tubular straight section and a bell mouth section which are connected in sequence along the length direction; the horn mouth section is fixedly matched with one end of the hollow tubular straight section, the hollow tubular straight section is not covered with a film 2 at the position 2-3mm away from one end of the horn mouth section, other parts of the hollow tubular straight section are covered with the film 2, and the non-covered stent body can increase the anchoring force of the stent body and a blood vessel on one hand, so that the risk of shifting after the stent body is implanted into the blood vessel is greatly reduced, and on the other hand, the endothelialization of the stent is facilitated. The pore diameter of the micropore gradually increases from one end close to the flare section to one end far away from the flare section.
In the embodiment, the length of the hollow tubular straight section is 8-18mm, and the diameter is 2-8mm; the length of the flare section along the axial direction of the hollow tubular straight section is 2-3mm, the diameter of the flare section close to one end of the hollow tubular straight section is 3-10mm, on one hand, the displacement of the stent can be effectively prevented, on the other hand, under the condition of restenosis, the establishment of a passage is facilitated, the stent starting part is the flare section, the stent in the subclavian artery can be effectively matched with the vessel wall, the restenosis in the stent can be further prevented, and the intravascular superselection of the passage during secondary operation is facilitated.
In this embodiment, a developing mark 4 is disposed between the hollow tubular straight section and the flare section, so that the stent body 1 and the covering film 2 can be positioned during surgery.
In this embodiment, the coating 2 is made of a polymer material, including polytetrafluoroethylene, polyester, polyurethane, etc.; the covering film 2 is provided with micropores, the pore diameter of the micropores is 0.3-10 mu m, preferably, the covering film 2 adopts a polytetrafluoroethylene microporous film, the pore diameter of the micropores is 0.3-2 mu m, the thickness of the covering film 2 is 1-200 mu m, and the stent body 1 and the covering film 2 can reduce the risk of plaque displacement in the release process.
Example 4
Referring to fig. 3 and 4, the present utility model provides a vertebral artery stent for reducing restenosis in a stent, comprising: the bracket comprises a bracket body 1 and a tectorial membrane 2, wherein the bracket body 1 comprises a hollow tubular straight section and a bell mouth section which are connected in sequence along the length direction; the horn mouth section is fixedly matched with one end of the hollow tubular straight section, the hollow tubular straight section is not covered with a film 2 at the position 2-3mm away from one end of the horn mouth section, other parts of the hollow tubular straight section are covered with the film 2, and the non-covered stent body can increase the anchoring force of the stent body and a blood vessel on one hand, so that the risk of shifting after the stent body is implanted into the blood vessel is greatly reduced, and on the other hand, the endothelialization of the stent is facilitated.
In the embodiment, the length of the hollow tubular straight section is 8-18mm, and the diameter is 2-8mm; the length of the flare section along the axial direction of the hollow tubular straight section is 2-3mm, the diameter of the flare section close to one end of the hollow tubular straight section is 3-10mm, on one hand, the displacement of the stent can be effectively prevented, on the other hand, under the condition of restenosis, the establishment of a passage is facilitated, the stent starting part is the flare section, the stent in the subclavian artery can be effectively matched with the vessel wall, the restenosis in the stent can be further prevented, and the intravascular superselection of the passage during secondary operation is facilitated.
In this embodiment, a developing mark 4 is disposed between the hollow tubular straight section and the flare section, so that the stent body 1 and the covering film 2 can be positioned during surgery.
In this embodiment, the coating 2 is made of a polymer material, including polytetrafluoroethylene, polyester, polyurethane, etc.; the covering film 2 is provided with micropores, the pore diameter of the micropores is 0.3-10 mu m, preferably, the covering film 2 adopts a polytetrafluoroethylene microporous film, the pore diameter of the micropores is 0.3-2 mu m, the thickness of the covering film 2 is 1-200 mu m, and the stent body 1 and the covering film 2 can reduce the risk of plaque displacement in the release process.
This embodiment also includes a dilation balloon within the lumen of the stent body 1 that matches the shape of the stent body 1 at a nominal dilation pressure. Wherein the balloon is a semi-compliant balloon.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A vertebral artery stent for reducing restenosis within the stent, comprising: the bracket comprises a bracket body (1) and a tectorial membrane (2), wherein the bracket body (1) comprises a hollow tubular straight section and a bell mouth section which are sequentially connected along the length direction; the horn mouth section is fixedly matched with one end of the hollow tubular straight section, and the coating film (2) is coated on the hollow tubular straight section;
The length of the hollow tubular straight section is 8-18mm, and the diameter is 2-8mm; the diameter of one end of the bell mouth section far away from the hollow tubular straight section is 3-10mm; the length of the flare opening section in the axial direction of the hollow tubular straight section is 2-3mm;
The hollow tubular straight section is not wrapped with the coating film at the position 2-3mm away from one end of the flare section, and other parts of the hollow tubular straight section are wrapped with the coating film.
2. A vertebral artery stent for reducing restenosis in a stent as recited in claim 1, wherein said flare section increases in diameter from an end proximal to the hollow tubular straight section to an end distal from the hollow tubular straight section.
3. A vertebral artery stent for reducing restenosis in stents according to claim 2, characterized in that a visualization mark (4) is provided between the hollow tubular straight section and the flare section.
4. A vertebral artery stent for reducing restenosis in a stent according to claim 1, wherein said cover is made of a polymeric material, said cover (2) having micropores with a pore size of 0.3 μm to 10 μm.
5. A vertebral artery stent for reducing restenosis in stents according to claim 4, characterised in that the thickness of the coating (2) is 1 μm-200 μm.
6. A vertebral artery stent for reducing restenosis in a stent as recited in claim 4, wherein said micropores taper in diameter from an end proximal to said flare section to an end distal from said flare section.
7. A vertebral artery stent for reducing restenosis in a stent according to claim 4, wherein said cover (2) is a polytetrafluoroethylene microporous membrane having a pore size of 0.3 μm to 2 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322101770.2U CN221331563U (en) | 2023-08-07 | 2023-08-07 | Vertebral artery stent for reducing restenosis in stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322101770.2U CN221331563U (en) | 2023-08-07 | 2023-08-07 | Vertebral artery stent for reducing restenosis in stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221331563U true CN221331563U (en) | 2024-07-16 |
Family
ID=91830915
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322101770.2U Active CN221331563U (en) | 2023-08-07 | 2023-08-07 | Vertebral artery stent for reducing restenosis in stent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221331563U (en) |
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2023
- 2023-08-07 CN CN202322101770.2U patent/CN221331563U/en active Active
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