CN202515718U - Film-covered stent - Google Patents
Film-covered stent Download PDFInfo
- Publication number
- CN202515718U CN202515718U CN 201220113693 CN201220113693U CN202515718U CN 202515718 U CN202515718 U CN 202515718U CN 201220113693 CN201220113693 CN 201220113693 CN 201220113693 U CN201220113693 U CN 201220113693U CN 202515718 U CN202515718 U CN 202515718U
- Authority
- CN
- China
- Prior art keywords
- overlay film
- film frame
- film part
- frame
- holes
- 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
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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
- A61F2/02—Prostheses implantable into the body
- A61F2/04—Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
- A61F2/06—Blood vessels
- A61F2/07—Stent-grafts
-
- 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
- A61F2002/823—Stents, different from stent-grafts, adapted to cover an aneurysm
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0004—Rounded shapes, e.g. with rounded corners
- A61F2230/0008—Rounded shapes, e.g. with rounded corners elliptical or oval
-
- 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
- A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
- A61F2230/0017—Angular shapes
-
- 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
- A61F2250/00—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2250/0014—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis
- A61F2250/0023—Special features of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof having different values of a given property or geometrical feature, e.g. mechanical property or material property, at different locations within the same prosthesis differing in porosity
Abstract
The utility model relates to a film-covered stent. The film-covered stent comprises a stent part (10) and a tube-shaped or frustum-shaped film-covered part (20) coated outside the stent part (10), wherein the film-covered part is provided with a plurality of holes (21).
Description
Technical field
This utility model relates to a kind of medical apparatus and instruments, more specifically, relates to a kind of overlay film frame that blood vessel is got involved medical treatment that is used for.
Background technology
Aneurysm is a kind of common cardiovascular and cerebrovascular disease.Usually; Aneurysm be since the arterial blood tube wall under the situation that disease, damage take place or the blood vessel wall part that causes because of congenital factor become weak; Bearing under the blood flow impact; The arterial blood tube wall of this weakness is outwards given prominence to, and expansion is gradually expanded and form like the cryptomere of circular, semicircle, ellipse or fusiformis.Aneurysm can constantly be grown under the impact of blood flow, the organ or tissue around the compressing.And because blood pressure increases or other factors possibly cause aneurysm rupture, take place sharply hemorrhage, thereby possibly produce life danger.
Aneurysm can occur in the different parts of health, wherein more common a kind of be intracranial aneurysm.Intracranial aneurysm normally because the birth defect of cerebral artery vessel wall and cerebral arteries cavity pressure increase and cause, is mainly in the arteria basilaris crotch.
Treating aneurysmal traditional method is surgical operation.For example, for intracranial aneurysm, adopt and open the cranium microsurgery.Take folder to close method as the one of which, that is, adopt special aneurysm clamp, folder closes aneurysm neck, and keeps the unobstructed property of parent artery.But this method is big to patient trauma, the doctor is operated requiring height, and sizable risk is arranged.
For fear of the existing high risk problem of surgical operation, the main at present interior interventional therapy method of Wicresoft's blood trouble pipe that adopts is treated aneurysm.For example, adopt support shutoff or turn, liquid embolic etc.Wherein, adopt overlay film frame treatment aneurysm effect remarkable, it can effectively and promptly completely cut off aneurysm wall and normal blood, changes the blood flow state in the tumor, reduces the impact injury of blood flow to the tumor wall, impels thrombosis, quickens vascular lesion position endothelialization.This method is little to patient's wound, and is safe, and therapeutic effect is good.
Existing overlay film frame generally is made up of two parts, i.e. holder part and overlay film part.Holder part is used to support the overlay film part that is coated on the holder part outside as supporting construction.Through the physics insulating effect of overlay film part, aneurysm diseased region and normal blood circulation is isolated, thus in parent artery, rebulid channel of blood flow through overlay film frame inside.
But there is following problem in existing overlay film frame; Promptly; When its overlay film part was isolated with aneurysm diseased region and normal blood circulation, this overlay film part also can cover near the branch vessel of aneurysm, thereby makes branch occlusion; Can influence the blood flow of branch vessel thus, may cause postoperative other adverse consequences of patient.In order to overcome this problem, proposed to adopt the overlay film frame of band side shoot, but the overlay film frame of this band side shoot is only applicable to the thicker situation of branch vessel, and side shoot need with branch vessel size coupling, this is a bigger challenge.Especially for intracranial aneurysm, because the entocranial artery branch vessel is many, this becomes problem more.
Therefore, if a kind of new overlay film frame is provided, it can overcome the problem that above-mentioned existing overlay film frame exists, thereby can be used to treat aneurysm, especially intracranial aneurysm more effectively, will be favourable so.
The utility model content
In view of the foregoing, this utility model proposes novel overlay film frame with holes on a kind of film, to address the above problem effectively.
According to this utility model, a kind of overlay film frame is provided, it comprises tubular or frustum-like shape overlay film part that holder part is outside with being coated on holder part, wherein said overlay film partly has a plurality of holes.
Said a plurality of hole can uniform distribution on said overlay film part.Alternatively, said a plurality of hole can non-uniform Distribution on said overlay film part.And preferably, said overlay film part is in the hole density at the end position place of the axial direction hole density greater than midway.Alternatively, said overlay film part can be less than the hole density of midway in the hole density at the end position place of axial direction.
The size in said a plurality of holes can be identical.Alternatively, the size in said a plurality of holes can be different.And preferably, said overlay film part is at the hole dimension at the end position place of the axial direction hole dimension greater than midway.Alternatively, said overlay film part can be less than the hole dimension of midway at the hole dimension at the end position place of axial direction.
Preferably, said a plurality of holes is shaped as circle or ellipse.
Preferably, said overlay film part is shorter in length than said holder part on axial direction, make the end limit of said overlay film part at a distance of the corresponding end limit of said holder part certain distance arranged.
Overlay film frame according to this utility model; Owing in the overlay film part, be formed with a plurality of holes, therefore can when realization is better treated it aneurysmal covering, reduce influence to branch vessel; Can not make branch occlusion, thereby reduce postoperative other adverse consequencess patient.The overlay film frame of this utility model especially has aspect the aneurysm of more branch vessel in treatment, and for example intracranial aneurysm has better effect than existing overlay film frame.
Description of drawings
Fig. 1 is the plane outspread drawing that illustrates according to the half cycle of the overlay film frame of a preferred embodiment of this utility model.
Fig. 2 is the plane outspread drawing that illustrates according to the half cycle of the overlay film frame of another preferred embodiment of this utility model.
The specific embodiment
Below, in conjunction with accompanying drawing, the overlay film frame according to this utility model preferred embodiment is described in detail.In the accompanying drawing, same or analogous element has adopted identical Reference numeral.
Fig. 1 shows the overlay film frame 1 according to a preferred embodiment of this utility model, wherein shows the plane outspread drawing of the half cycle (that is, circumferential half the along it) of this overlay film frame.
As shown in the figure, the overlay film frame 1 of this utility model comprises holder part 10 and the overlay film part 20 that is coated on said holder part 10 outsides, and wherein said overlay film part 20 has a plurality of holes 21.
In the overlay film frame of this utility model, both can adopt the elasticity overlay film, also can adopt non-resilient overlay film.Preferably, overlay film part 20 is for having the overlay film of biocompatibility.And preferably, overlay film part 20 is a polymeric film, for example the ePTFE film.
In overlay film frame shown in Figure 11, the axial length of overlay film part 20 is shorter than holder part 10, thereby there is certain distance on the axial end limit of overlay film part 20 at a distance of the corresponding end limit of holder part 10.But alternatively, the axial end limit of overlay film part 20 can be concordant with respect to the axial end limit of holder part 10.
Can before being coated on overlay film part 20 on the holder part 10, adopt modes such as mechanical means or laser boring to form the hole 21 in the overlay film part 20, the overlay film part 20 that will have hole 21 then be fixed on the holder part 10 and forms overlay film frame.Preferably, the shape in hole 21 is generally circle or ellipse, but also can make special shape as required, like polygon or irregularly shaped.
In the overlay film frame 1 of this utility model shown in Figure 1, the hole 21 in the overlay film part 20 is along the circumferential and axial uniform distribution.But alternatively, the hole 21 in the overlay film part 20 can be non-uniform Distribution (especially vertically), and this will combine the embodiment of Fig. 2 to further describe below.
In the overlay film frame according to this utility model, the diameter of cylindric overlay film part 20 can be 3mm, and the diameter in hole 21 wherein can be 0.2mm.Illustrated among Fig. 1 along circumference one circle and be distributed with 12 holes; Delegation is distributed with 10 holes vertically.But this utility model is not limited to this, but can adjust the size and the quantity of overlay film frame and mesopore thereof as required.
Fig. 2 shows the overlay film frame 1 ' according to another preferred embodiment of this utility model, wherein shows the plane outspread drawing of the half cycle (that is, circumferential half the along it) of this overlay film frame.
Overlay film frame 1 ' shown in Figure 2 is mainly that with the difference of overlay film frame 1 shown in Figure 1 the distribution situation of overlay film part 20 mesopores 21 is different.The overlay film frame of these two embodiment is identical in other respects, has therefore omitted multiple description here.
As shown in Figure 2, to compare with the overlay film frame 1 shown in Fig. 1, the hole 21 in the overlay film part 20 of the overlay film frame 1 ' of Fig. 2 is non-uniform Distribution.Particularly, overlay film part 20 is in the hole density at the end position place of the axial direction hole density greater than midway.In addition, overlay film part 20 is at the hole dimension at the end position place of the axial direction hole dimension greater than midway.
According to overlay film frame shown in Figure 21 ' is favourable in some aspects.Because according to this structure, at the zone line of overlay film part 20, the coverage rate of film is big, thereby better to aneurysmal covering and therapeutic effect; And at the end regions of overlay film part 20, the coverage rate of film is little, thereby has reduced the influence to peripheral branch vessel.For the more intracranial aneurysm of treatment branch vessel, this is especially favourable.
But should be appreciated that this utility model is not limited to shown specific embodiment here.Those skilled in the art are envisioned that various replacement schemes based on the instruction of this utility model, to change the coverage rate of film in the overlay film part as required.For example, can be under the situation of the hole in making overlay film part 20 21 with uniform Density Distribution, the hole dimension of its position, axial direction upper end is set to the hole dimension greater than midway; Perhaps can have under the situation of unified size in the hole in making overlay film part 20 21, the hole density of its position, axial direction upper end is set to the hole density greater than midway.In order to adapt to different needs; Those skilled in the art also are envisioned that some characteristics in the said structure are replaced with opposite characteristic; Promptly; Overlay film part 20 is in the hole density at the end position place of the axial direction hole density less than midway, and/or overlay film part 20 is at the hole dimension at the end position place of the axial direction hole dimension less than midway.These are all within the coverage of this utility model.
Overlay film frame according to this utility model; Owing in the overlay film part, be formed with a plurality of holes; Therefore can realize aneurysmal covering with when it is better treated; Reduce influence, thereby can not make branch occlusion, reduced postoperative other adverse consequencess thus patient to branch vessel.The overlay film frame of this utility model can be used for treating various aneurysms, and especially aspect the treatment of intracranial aneurysm, it is compared with existing overlay film frame, has better effect.
In addition, because the hole in the overlay film part is preformed, so its shape and size can accurately be controlled.And, no matter be elastica, or non-elastomeric film, all can be applied in this utility model, it has great practical value.
Should be appreciated that foregoing description only is exemplary.Various modifications and changes may be made for those skilled in the art, and do not deviate from the thought and the scope of this utility model.
Claims (10)
1. an overlay film frame comprises holder part (10) and is coated on outside tubular of said holder part (10) or frustum-like shape overlay film part (20), it is characterized in that said overlay film part (20) has a plurality of holes (21).
2. overlay film frame as claimed in claim 1 is characterized in that, uniform distribution is gone up in said overlay film part (20) in said a plurality of holes (21).
3. overlay film frame as claimed in claim 1 is characterized in that, non-uniform Distribution is gone up in said overlay film part (20) in said a plurality of holes (21).
4. overlay film frame as claimed in claim 3 is characterized in that, said overlay film part (20) is in the hole density at the end position place of the axial direction hole density greater than midway.
5. overlay film frame as claimed in claim 3 is characterized in that, said overlay film part (20) is in the hole density at the end position place of the axial direction hole density less than midway.
6. like each described overlay film frame among the claim 1-5, it is characterized in that said a plurality of holes (21) big or small identical.
7. like each described overlay film frame among the claim 1-5, it is characterized in that said overlay film part (20) is at the hole dimension at the end position place of the axial direction hole dimension greater than midway.
8. like each described overlay film frame among the claim 1-5, it is characterized in that said overlay film part (20) is at the hole dimension at the end position place of the axial direction hole dimension less than midway.
9. like each described overlay film frame among the claim 1-5, it is characterized in that, said a plurality of holes (21) be shaped as circle or ellipse.
10. like each described overlay film frame among the claim 1-5; It is characterized in that; Said overlay film part (20) is shorter in length than said holder part (10) on axial direction, make the end limit of said overlay film part (20) at a distance of the corresponding end limit of said holder part (10) certain distance arranged.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220113693 CN202515718U (en) | 2012-03-23 | 2012-03-23 | Film-covered stent |
| PCT/CN2013/072989 WO2013139286A1 (en) | 2012-03-23 | 2013-03-21 | Tectorial membrane stent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220113693 CN202515718U (en) | 2012-03-23 | 2012-03-23 | Film-covered stent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202515718U true CN202515718U (en) | 2012-11-07 |
Family
ID=47098694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220113693 Expired - Lifetime CN202515718U (en) | 2012-03-23 | 2012-03-23 | Film-covered stent |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN202515718U (en) |
| WO (1) | WO2013139286A1 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013139286A1 (en) * | 2012-03-23 | 2013-09-26 | 上海微创医疗器械（集团）有限公司 | Tectorial membrane stent |
| CN105030373A (en) * | 2015-09-07 | 2015-11-11 | 湖南埃普特医疗器械有限公司 | Aorta covered stent |
| CN105559945A (en) * | 2016-02-29 | 2016-05-11 | 微创心脉医疗科技（上海）有限公司 | Covered stent and manufacturing method thereof |
| CN105982712A (en) * | 2015-01-28 | 2016-10-05 | 上海交通大学 | Blood flow-directed device and realization method thereof |
| CN106456345A (en) * | 2014-06-12 | 2017-02-22 | 国立研究开发法人国立循环器病研究中心 | Stent |
| CN107510519A (en) * | 2017-09-05 | 2017-12-26 | 辽宁垠艺生物科技股份有限公司 | Band film network |
| CN116211379A (en) * | 2023-05-06 | 2023-06-06 | 上海暖阳医疗器械有限公司 | Tectorial membrane embolic stent and tectorial membrane process |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB201804070D0 (en) * | 2018-03-14 | 2018-04-25 | Ab Wasstand Dev | Stents |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6428569B1 (en) * | 1999-11-09 | 2002-08-06 | Scimed Life Systems Inc. | Micro structure stent configurations |
| US7560006B2 (en) * | 2001-06-11 | 2009-07-14 | Boston Scientific Scimed, Inc. | Pressure lamination method for forming composite ePTFE/textile and ePTFE/stent/textile prostheses |
| JP5824794B2 (en) * | 2010-09-03 | 2015-12-02 | 国立研究開発法人国立循環器病研究センター | Aneurysm treatment stent |
| CN202515718U (en) * | 2012-03-23 | 2012-11-07 | 微创医疗器械(上海)有限公司 | Film-covered stent |
-
2012
- 2012-03-23 CN CN 201220113693 patent/CN202515718U/en not_active Expired - Lifetime
-
2013
- 2013-03-21 WO PCT/CN2013/072989 patent/WO2013139286A1/en active Application Filing
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2013139286A1 (en) * | 2012-03-23 | 2013-09-26 | 上海微创医疗器械（集团）有限公司 | Tectorial membrane stent |
| CN106456345A (en) * | 2014-06-12 | 2017-02-22 | 国立研究开发法人国立循环器病研究中心 | Stent |
| CN106456345B (en) * | 2014-06-12 | 2021-11-23 | 国立研究开发法人国立循环器病研究中心 | Support frame |
| CN105982712A (en) * | 2015-01-28 | 2016-10-05 | 上海交通大学 | Blood flow-directed device and realization method thereof |
| CN105982712B (en) * | 2015-01-28 | 2018-01-30 | 上海交通大学 | Blood flow guider and its implementation |
| CN105030373A (en) * | 2015-09-07 | 2015-11-11 | 湖南埃普特医疗器械有限公司 | Aorta covered stent |
| CN105559945A (en) * | 2016-02-29 | 2016-05-11 | 微创心脉医疗科技（上海）有限公司 | Covered stent and manufacturing method thereof |
| CN107510519A (en) * | 2017-09-05 | 2017-12-26 | 辽宁垠艺生物科技股份有限公司 | Band film network |
| CN116211379A (en) * | 2023-05-06 | 2023-06-06 | 上海暖阳医疗器械有限公司 | Tectorial membrane embolic stent and tectorial membrane process |
| CN116211379B (en) * | 2023-05-06 | 2023-08-15 | 上海暖阳医疗器械有限公司 | Tectorial membrane embolic stent and tectorial membrane process |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013139286A1 (en) | 2013-09-26 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SHANGHAI MICROPORT MEDICAL EQUIPMENT (GROUP) CO., Free format text: FORMER NAME: WEICHUANG MEDICAL EQUIPMENT (SHANGHAI) CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 201203 Shanghai City Newton Road, Pudong New Area Zhangjiang hi tech Park No. 501 Patentee after: Shanghai MicroPort Medical Equipment (Group) Co., Ltd. Address before: 201203 Shanghai City Newton Road, Pudong New Area Zhangjiang hi tech Park No. 501 Patentee before: Weichuang Medical Equipment (Shanghai) Co., Ltd. |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160214 Address after: 201318 Shanghai city wide 222 Lane 16 Pudong New Area Road Patentee after: Minimally invasive Shentong medical technology (Shanghai) Co., Ltd. Address before: 201203 Shanghai City Newton Road, Pudong New Area Zhangjiang hi tech Park No. 501 Patentee before: Shanghai MicroPort Medical Equipment (Group) Co., Ltd. |
|
| CX01 | Expiry of patent term |
Granted publication date: 20121107 |
|
| CX01 | Expiry of patent term |