CN203841853U - Stent graft - Google Patents
Stent graft Download PDFInfo
- Publication number
- CN203841853U CN203841853U CN201420167818.8U CN201420167818U CN203841853U CN 203841853 U CN203841853 U CN 203841853U CN 201420167818 U CN201420167818 U CN 201420167818U CN 203841853 U CN203841853 U CN 203841853U
- Authority
- CN
- China
- Prior art keywords
- overlay film
- film frame
- frame unit
- main body
- far
- 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.)
- Expired - Lifetime
Links
- 230000004323 axial length Effects 0.000 claims description 12
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010931 gold Substances 0.000 claims description 3
- 229910052737 gold Inorganic materials 0.000 claims description 3
- 238000007731 hot pressing Methods 0.000 claims description 3
- 206010028980 Neoplasm Diseases 0.000 abstract description 10
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 238000005452 bending Methods 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000002792 vascular Effects 0.000 abstract description 2
- 210000002489 tectorial membrane Anatomy 0.000 abstract 3
- 230000000694 effects Effects 0.000 abstract 1
- 210000004204 blood vessel Anatomy 0.000 description 7
- 229910000521 B alloy Inorganic materials 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 206010002329 Aneurysm Diseases 0.000 description 3
- 208000032843 Hemorrhage Diseases 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 239000004744 fabric Substances 0.000 description 3
- 208000014674 injury Diseases 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 230000008733 trauma Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000011010 flushing procedure Methods 0.000 description 2
- 230000003902 lesion Effects 0.000 description 2
- 230000004899 motility Effects 0.000 description 2
- -1 politef Substances 0.000 description 2
- 206010059245 Angiopathy Diseases 0.000 description 1
- 229910000684 Cobalt-chrome Inorganic materials 0.000 description 1
- 239000004952 Polyamide Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 208000007536 Thrombosis Diseases 0.000 description 1
- 208000027418 Wounds and injury Diseases 0.000 description 1
- WAIPAZQMEIHHTJ-UHFFFAOYSA-N [Cr].[Co] Chemical compound [Cr].[Co] WAIPAZQMEIHHTJ-UHFFFAOYSA-N 0.000 description 1
- 230000001464 adherent effect Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 230000017531 blood circulation Effects 0.000 description 1
- 230000036770 blood supply Effects 0.000 description 1
- 238000009954 braiding Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- BJDCWCLMFKKGEE-CMDXXVQNSA-N chembl252518 Chemical compound C([C@@](OO1)(C)O2)C[C@H]3[C@H](C)CC[C@@H]4[C@@]31[C@@H]2O[C@H](O)[C@@H]4C BJDCWCLMFKKGEE-CMDXXVQNSA-N 0.000 description 1
- 239000010952 cobalt-chrome Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 229950000845 politef Drugs 0.000 description 1
- 229920002647 polyamide Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 229910001256 stainless steel alloy Inorganic materials 0.000 description 1
- 230000001225 therapeutic effect Effects 0.000 description 1
- 238000002560 therapeutic procedure Methods 0.000 description 1
Landscapes
- Prostheses (AREA)
Abstract
The utility model provides a stent graft which comprises a cylindrical stent graft body. Multiple intermediate stent graft units are sequentially connected to the near end and/or far end of the stent graft body in a sleeved manner; each intermediate stent graft unit comprises a tubular tectorial membrane and a single annular stent fixed on the surface of the near end of the tectorial membrane; adjacent intermediate stent graft units are partially overlapped. Such the structure mentioned above is adopted to enable the tectorial membranes composing the intermediate stent graft units to be arranged in an overlapped manner, so that improvement of the sealing effect of the near end and/or the far end of the stent graft body is benefited; meanwhile, arrangement density of the stents located at the near end and/or far end of the stent graft body can be added, increase of the radial support force is benefited, and the displacement of the stent graft can be avoided efficiently. In addition, the bending or setting flexibility of the near end and or far end of the stent graft also can be improved, therefore, the stent graft can be better adapted to a vascular wall or a tumour neck, and inner leakage at the end part of the stent graft is avoided.
Description
Technical field
This utility model relates to a kind of overlay film frame.
Background technology
Aneurysm is very dangerous clinically a kind of angiopathy, therefore, once finding aneurysm patient, should carry out corresponding treatment to it as early as possible.At present, utilizing the Wicresoft of inner cavity insulation principle to hinder interventional therapeutic technique is utilized widely, it is the induction system thinner with a set of caliber, after the overlay film frame of confined state being sent to the position of lesion vessels, accurately discharge, cover lesion vessels section, isolated tumor chamber also forms new channel of blood flow; Aneurysm is being lost after blood supply, and tumor intracavity remained blood forms thrombosis gradually and flesh changes into vascular tissue, and the tumor wall of expansion state, because shunk by negative pressure, returns to gradually and approaches original form, thereby reaches the aneurysmal object for the treatment of.This technology has alleviated operation wound, patient recovers faster greatly.
But in therapeutic process, after existing overlay film frame discharges, its end is easily out of shape by mandatory bending, makes the adherent degradation of overlay film frame and blood vessel wall or tumor neck, easily causes overlay film frame displacement and internal hemorrhage due to trauma.For fear of these two complication, strengthen grappling and the stickiness of overlay film frame.
Utility model content
In view of this, main purpose of the present utility model is, a kind of overlay film frame that is conducive to the sealing effectiveness that improves overlay film frame end is provided.
For achieving the above object, the utility model proposes a kind of overlay film frame, comprise the overlay film frame main body that is tubular, near-end and/or far-end in described overlay film frame main body are socketed with multiple middle overlay film frames unit successively, this overlay film frame unit, centre comprises overlay film in a tubular form and is fixed on proximal end face the ringwise single support of described overlay film, wherein, adjacent described middle overlay film frame cell mesh is overlapping.
Adopt said structure, overlapping owing to being positioned at the middle overlay film frame cell mesh of adjacent setting of described overlay film frame proximal and/or far-end, the overlay film of overlay film frame unit in the middle of forming is overlapped, be conducive to like this improve the near-end of described overlay film frame main body and/or the sealing effectiveness of far-end; Meanwhile, can also increase the arranging density that is positioned at the near-end of overlay film frame main body and/or the support of far-end, so be conducive to increase the radial support power of overlay film frame proximal and/or far-end, can effectively avoid overlay film frame displacement.In addition, because overlay film frame unit in the middle of multiple is socketed setting successively at near-end and/or the far-end of described overlay film frame main body, the directivity of overlay film frame near-end and/or far-end is reduced, can improve the bending of overlay film frame near-end and/or far-end or motility is set, thereby blood vessel wall or tumor neck are suitable better, avoid forming internal hemorrhage due to trauma in the end of overlay film frame.
Preferably, be socketed with successively multiple described middle overlay film frame unit and a tail end overlay film frame unit at the far-end of described overlay film frame main body, described tail end overlay film frame unit is overlapping with the middle overlay film frame cell mesh that is close to it, and the axial length that the difference of described tail end overlay film frame unit and described middle overlay film frame unit is the latter is greater than the former.
Preferably, the axial length of the overlay film of described middle overlay film frame unit is greater than the annular axial length that its support forms, and forms commissura by the marginal portion of the overlay film that is positioned at described middle overlay film frame unit far-end.
Adopt said structure, because the far-end of the overlay film in described middle overlay film frame unit forms commissura, when in the middle of described, the socket of overlay film frame unit arranges, be conducive to increase the overlapping area of adjacent middle overlay film frame unit, thereby be conducive to improve the near-end of described overlay film frame main body and/or the sealing effectiveness of far-end.
Preferably, in the middle of described the commissura of overlay film frame unit by suture on the middle overlay film frame unit being adjacent or overlay film frame main body or tail end overlay film frame unit.
Preferably, in the middle of described, the commissura of overlay film frame unit links into an integrated entity by hot pressing mode and the middle overlay film frame unit being adjacent or overlay film frame main body or tail end overlay film frame unit.
Preferably, on the described middle overlay film frame unit of proximal head that is positioned at described overlay film frame main body, be provided with a bare bracket.
Adopt said structure, owing to being provided with a bare bracket on the described middle overlay film frame unit of proximal head that is positioned at described overlay film frame main body, after overlay film frame discharges, bare bracket can be anchored on blood vessel or tumor neck wall, so can improve the fix tightly solidity of overlay film frame near-end, avoid overlay film frame displacement.
Preferably, described bare bracket bends institute by involutory spun gold and forms, and on described bare bracket, is fixed with agnail near its crest forming and/or trough place.
Adopt said structure, owing to being fixed with agnail on described bare bracket, can improve the grappling adhesion of bare bracket and blood vessel or tumor neck wall by this agnail, be conducive to improve the fix tightly solidity of overlay film frame near-end, avoid overlay film frame displacement.
Preferably, described overlay film frame main body is similar to and is straight cylinder shape, in the middle of described, overlay film frame unit and tail end overlay film frame unit are all by near-end to the tapered cylindrical shape of far-end, and in the middle of near-end described, overlay film frame unit is all positioned at the inner side of overlay film frame unit in the middle of far-end described or tail end overlay film frame unit.
Preferably, the described middle overlay film frame unit that is close to the near-end setting of described overlay film frame main body is positioned at the near-end inner side of described overlay film frame main body, and the described middle overlay film frame unit that is close to the far-end setting of described overlay film frame main body is positioned at the far-end outside of described overlay film frame main body.
Brief description of the drawings
Fig. 1 is the overall schematic of overlay film frame;
Fig. 2 is the schematic diagram that is positioned at the middle overlay film frame unit of overlay film frame proximal head;
Fig. 3 is the schematic diagram that is positioned at the middle overlay film frame unit at overlay film frame two ends;
Fig. 4 is the schematic diagram that is positioned at the overlay film frame main body at overlay film frame middle part;
Fig. 5 is the schematic diagram that is positioned at the tail end overlay film frame unit of overlay film frame far-end afterbody.
Detailed description of the invention
Below with reference to Fig. 1～Fig. 5, the detailed description of the invention of overlay film frame described in the utility model is described in detail.In following description, near-end refers to overlay film frame one end near heart, and far-end refers to overlay film frame one end away from heart.
As shown in Figure 1 and Figure 4, overlay film frame 1 mainly comprises an approximate overlay film frame main body 4 that is straight cylinder shape open at both ends, and the distal diameter of this overlay film frame main body 4 is slightly smaller than its proximal diameter.Overlay film frame main body 4 is made up of multiple main body racks 41 of axially uniformly-spaced arranging along it and the main body overlay film 42 that is sleeved on these multiple main body racks 41 outsides, wherein, single main body rack 41 is to carry out " W " shape by involutory spun gold to bend the alloy hoop or the braiding structure that form, this B alloy wire should meet the requirement of implant into body, and it comprises: niti-shaped memorial alloy, NiTi superelastic alloy, 316L medical stainless steel alloy, implantable cobalt chromium dynamax.Main body overlay film 42 is thin type blood vessel, and it is made up of medical macromolecular materials, comprising: polyester fiber yarn fabric, politef, polyamide yarn fabric, polypropylene spun fabric.
Near-end and far-end in overlay film frame main body 4 are socketed with respectively multiple middle overlay film frames unit 3 successively, are socketed with a tail end overlay film frame unit 8 in the outside of the middle overlay film frame unit 3 that is positioned at overlay film frame main body 4 far-end afterbodys.Middle overlay film frame unit 3 and tail end overlay film frame unit 8 are all by near-end and are tapered and the cylindrical shape of open at both ends to far-end, they by overlay film in a tubular form and be fixed on this overlay film internal face and ringwise single be configured to, this overlay film adopts the material identical with aforementioned body overlay film 42 to make, single support also adopts the material identical with aforementioned body support 41 to make, therefore do not repeat at this.As shown in Figure 3 and Figure 5, in the present embodiment, the axial length of middle overlay film frame unit 3 is greater than the axial length of tail end overlay film frame unit 8, in the middle of being in particular, the axial length of the overlay film of overlay film frame unit 3 is greater than the axial length of the overlay film of tail end overlay film frame unit 8, the top of the single support of middle overlay film frame unit 3 and tail end overlay film frame unit 8 all keeps flushing with the proximal edge of corresponding overlay film, the bottom of single support of tail end overlay film frame unit 8 and the remote edge of its overlay film keep flushing, and the bottom of the single support of middle overlay film frame unit 3 does not flush with the far-end of its overlay film, in the middle of, the axial length of the overlay film of overlay film frame unit 3 is greater than the annular axial length that its support forms, marginal portion by the overlay film of overlay film frame unit 3 far-ends in the middle of being positioned at forms commissura 10.
As shown in Figure 1, the middle overlay film frame unit 3 of near-end is all positioned at the inner side of the middle overlay film frame unit 3 of far-end, wherein, the middle overlay film frame unit 3 that is close to the near-end setting of overlay film frame main body 4 is positioned at the near-end inner side of overlay film frame main body 4, the middle overlay film frame unit 3 that is close to the far-end setting of overlay film frame main body 4 is positioned at the far-end outside of overlay film frame main body 4, and tail end overlay film frame unit 8 is positioned at the outside of the middle overlay film frame 3 being adjacent.Overlay film frame 1 by near-end to the direction of far-end, be positioned at overlay film frames unit 3, overlay film frame main body 4 in the middle of overlay film frame main body 4 near-ends multiple, be positioned at overlay film frame unit 3 and tail end overlay film frame unit 8 in the middle of overlay film frame main body 4 far-ends multiple and connect together successively.The trough of the support of the overlay film frame unit of near-end is just between two crests of the support of the overlay film frame unit of the far-end being adjacent; The commissura 10 of the overlay film of the overlay film frame unit of near-end partly overlaps with the proximal edge of the overlay film of the overlay film frame unit of adjacent far-end, and this commissura 10 can be sewn on the middle overlay film frame unit 3 of the far-end being adjacent or the near-end inwall of overlay film frame main body 4 or tail end overlay film frame unit 8 by stitching thread is all-round.
As shown in Figure 1, on the middle overlay film frame unit 3 of proximal head that is positioned at overlay film frame main body 4, be provided with a bare bracket 7, this bare bracket 7 is formed by the aforementioned B alloy wire that forms support being carried out to the bending of " W " shape.On bare bracket 7, in being fixed with respectively agnail 9 near its crest and trough place, this agnail 9 is also made up of aforementioned B alloy wire, and it can be formed by the end of the same B alloy wire in order to form bare bracket 7, also can adopt independent B alloy wire to make.
By upper, because the middle overlay film frame unit 3 of the adjacent setting that is positioned at overlay film frame main body 4 near-ends and far-end partly overlaps, the overlay film of overlay film frame unit 3 in the middle of forming is overlapped, be conducive to like this improve the near-end of overlay film frame main body 4 and the sealing effectiveness of far-end; Meanwhile, can also increase the arranging density that is positioned at the near-end of overlay film frame main body 4 and the support of far-end, so be conducive to increase the radial support power of overlay film frame main body 4 near-ends and far-end, can effectively avoid overlay film frame displacement.In addition, because overlay film frame unit 3 near-ends in overlay film frame main body 4 in the middle of multiple and far-end are socketed setting successively, the directivity of overlay film frame near-end and far-end is reduced, can improve the bending of overlay film frame near-end and far-end or motility is set, thereby blood vessel wall or tumor neck wall are suitable better, avoid forming internal hemorrhage due to trauma at near-end or the far-end of overlay film frame.
The foregoing is only preferred embodiment of the present utility model; not in order to limit this utility model; all within spirit of the present utility model and principle, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection domain of the present utility model.
For example, in the embodiment shown in fig. 1, near-end and far-end in overlay film frame main body 4 are equipped with the multiple overlay film frames unit that is socketed and overlaps, but not limited thereto, also can only at near-end or the far-end of overlay film frame main body 4, socket partly overlapping multiple overlay film frames unit be set separately.
Again for example, in the above-described embodiments, overlay film frame main body 4 is approximate is straight cylinder shape, but not limited thereto, overlay film frame main body also can be by near-end to the tapered cylindrical shape of far-end, and tumor neck or blood vessel that its concrete shape and size should be applicable with it are consistent.
Again for example, in the above-described embodiments, the commissura of the overlay film frame unit of near-end is utilized suture to be stitched together to realize with the far-end overlay film frame unit being adjacent and is connected to each other, but not limited thereto, the commissura of the overlay film frame unit of near-end also can link into an integrated entity by hot pressing mode and the overlay film frame unit of the far-end being adjacent or the inwall of overlay film frame main body or tail end overlay film frame unit.
Claims (9)
1. an overlay film frame, comprise the overlay film frame main body (4) that is tubular, it is characterized in that, near-end and/or far-end in described overlay film frame main body (4) are socketed with multiple middle overlay film frame unit (3) successively, this overlay film frame unit, centre (3) comprises overlay film in a tubular form and is fixed on proximal end face the ringwise single support of described overlay film, wherein, adjacent described middle overlay film frame unit (3) partly overlaps.
2. overlay film frame according to claim 1, it is characterized in that, the far-end of described overlay film frame main body (4) be socketed with successively multiple described in the middle of overlay film frame unit (3) and a tail end overlay film frame unit (8), described tail end overlay film frame unit (8) partly overlaps with the middle overlay film frame unit (2) that is close to it
Described tail end overlay film frame unit (8) is greater than the former with the axial length that the difference of described middle overlay film frame unit (3) is the latter.
3. overlay film frame according to claim 2, it is characterized in that, in the middle of described, the axial length of the overlay film of overlay film frame unit (3) is greater than the annular axial length that its support forms, and forms commissura (10) by the marginal portion of the overlay film that is positioned at described middle overlay film frame unit (3) far-end.
4. overlay film frame according to claim 3, it is characterized in that, described in the middle of overlay film frame unit (3) commissura (10) by suture on the middle overlay film frame unit (3) being adjacent or overlay film frame main body (4) or tail end overlay film frame unit (8).
5. overlay film frame according to claim 3, it is characterized in that, described in the middle of the commissura (10) of overlay film frame unit (3) link into an integrated entity by hot pressing mode and the middle overlay film frame unit (3) that is adjacent or overlay film frame main body (4) or tail end overlay film frame unit (8).
6. overlay film frame according to claim 1 and 2, is characterized in that, on the described middle overlay film frame unit (3) of proximal head that is positioned at described overlay film frame main body (4), is provided with a bare bracket (7).
7. overlay film frame according to claim 6, is characterized in that, described bare bracket (7) bends institute by involutory spun gold and forms, and is fixed with agnail (9) at upper close its crest forming of described bare bracket (7) and/or trough place.
8. overlay film frame according to claim 2, is characterized in that, described overlay film frame main body (4) is approximate is straight cylinder shape, described in the middle of overlay film frame unit (3) and tail end overlay film frame unit (8) be all by near-end to the tapered cylindrical shape of far-end,
The described middle overlay film frame unit (3) of near-end is all positioned at the described middle overlay film frame unit (3) of far-end or the inner side of tail end overlay film frame unit (8).
9. overlay film frame according to claim 8, it is characterized in that, be close to the near-end inner side that overlay film frame unit (3) in the middle of described that the near-end of described overlay film frame main body (4) arranges is positioned at described overlay film frame main body (4), be close to overlay film frame unit (3) in the middle of described that the far-end of described overlay film frame main body (4) arranges and be positioned at the far-end outside of described overlay film frame main body (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420167818.8U CN203841853U (en) | 2014-04-08 | 2014-04-08 | Stent graft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420167818.8U CN203841853U (en) | 2014-04-08 | 2014-04-08 | Stent graft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203841853U true CN203841853U (en) | 2014-09-24 |
Family
ID=51554928
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420167818.8U Expired - Lifetime CN203841853U (en) | 2014-04-08 | 2014-04-08 | Stent graft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203841853U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103932821A (en) * | 2014-04-08 | 2014-07-23 | 许尚栋 | Covered stent |
| WO2019042203A1 (en) * | 2017-08-28 | 2019-03-07 | 先健科技(深圳)有限公司 | Tube stent |
-
2014
- 2014-04-08 CN CN201420167818.8U patent/CN203841853U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103932821A (en) * | 2014-04-08 | 2014-07-23 | 许尚栋 | Covered stent |
| WO2019042203A1 (en) * | 2017-08-28 | 2019-03-07 | 先健科技(深圳)有限公司 | Tube stent |
| US11173059B2 (en) | 2017-08-28 | 2021-11-16 | Lifetech Scientific (Shenzhen) Co., Ltd | Tube stent |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140924 |