CN204072390U - Prevent the Stent-graft of internal hemorrhage due to trauma - Google Patents
Prevent the Stent-graft of internal hemorrhage due to trauma Download PDFInfo
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- CN204072390U CN204072390U CN201420496651.XU CN201420496651U CN204072390U CN 204072390 U CN204072390 U CN 204072390U CN 201420496651 U CN201420496651 U CN 201420496651U CN 204072390 U CN204072390 U CN 204072390U
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Abstract
The utility model proposes a kind of Stent-graft preventing internal hemorrhage due to trauma, comprise rack body and be coated on the first overlay film outside this rack body, outside the first overlay film, the second overlay film is coated with at the proximal part of Stent-graft, remote edge and first overlay film of this second overlay film are tightly connected, its proximal edge and the first overlay film are optionally connected to form the multiple openings entered for blood in the blister cavities that formed by the first overlay film and the second overlay film in this side, and this multiple split ring is uniformly distributed around the circumference of artificial blood vessel.Potential space is formed at the proximal part of artificial blood vessel by setting up the second overlay film, after Stent-graft implants, under the impact of blood flow, this part potential space is heaved because of hyperemia, form a self-styled closed loop, not only fill up the space between support type artifical vascular and autologous vein wall, and facilitate fitting tightly between support type artifical vascular wall and autologous vein wall, support type artifical vascular is made closely to be attached on autologous vein wall, to prevent the generation of internal hemorrhage due to trauma.
Description
Technical field
This utility model relates to a kind of Stent-graft preventing internal hemorrhage due to trauma.
Background technology
Aorta vessel pathological changes or damage cause arterial wall to be expanded, part or holostrome break then there is tumor sample form and is called aortic aneurysm.The main Endovascular aortic repair that adopts treats aortic aneurysm at present, this Endovascular aortic repair is that standoff for band artificial blood vessel is sent into aorta from femoral artery, artificial blood vessel strides across aneurysmal near, far-end, blood flow is passed through in artificial blood vessel, no longer enter in tumor body, tumor chamber " is completely cut off " by artificial blood vessel, thus reaches reparation object.If but still had blood to enter tumor chamber, not by complete " completely cutting off ", aortic aneurysm wall would still bear arteriotony and then may break, and this situation is called as internal hemorrhage due to trauma.The basic reason producing internal hemorrhage due to trauma is that the adherent property of man-made support blood vessel and autologous vein is bad, causes the internal hemorrhage due to trauma caused in end position generation gap between stented vessel and autologous vein.
Application number be 201220528893.3 Chinese patent disclose the treatment of a kind of aortic aneurysm inner cavity insulation with artificial blood vessel, this artificial blood vessel comprises rack body, internal layer artificial vascular membrane is coated with at rack body, outer artificial vascular membrane is also coated with outward at the proximal part internal layer artificial vascular membrane of rack body, this outer artificial vascular membrane and internal layer artificial vascular membrane form the airtight duplicature chamber of surrounding at the proximal part of artificial blood vessel, the internal layer artificial vascular membrane of duplicature cavity region is also distributed with perforate, when this artificial blood vessel navigates to lesion portion, open simultaneously opened by support, blood fills into duplicature chamber by perforate, cushion spline structure is formed at artificial blood vessel's proximal part, can combine closely with the irregular autologous vein wall such as thrombosis or calcified plaque with tumor neck near-end, effectively prevent the generation of internal hemorrhage due to trauma.
In technique scheme, blood enters duplicature chamber by the perforate be opened on internal layer artificial vascular membrane, adopts in this way, need ensure that blood is supplied to duplicature intracavity continuously to ensure to form cushion spline structure at artificial blood vessel's proximal part.Owing to being provided with perforate on internal layer artificial vascular membrane, easily cause the blood of duplicature intracavity to be back to artificial blood vessel at relaxing period from duplicature intracavity, reduce the degree of combining closely of artificial blood vessel's wall and autologous vein wall, be unfavorable for preventing and treating internal hemorrhage due to trauma.
Utility model content
In view of this, main purpose of the present utility model is, provides a kind of artificial blood vessel preventing internal hemorrhage due to trauma being conducive to improving anti-internal hemorrhage due to trauma effect.
For achieving the above object, the utility model proposes a kind of Stent-graft preventing internal hemorrhage due to trauma, comprise rack body and be coated on the first overlay film outside this rack body, outside described first overlay film, the second overlay film is coated with at the proximal part of described Stent-graft, remote edge and described first overlay film of this second overlay film are tightly connected, its proximal edge and described first overlay film are optionally connected to be formed discontinuous closed structure in this side, form the multiple openings entered for blood in the blister cavities that formed by described first overlay film and the second overlay film thus.
Adopt said structure, when this artificial blood vessel navigates to lesion portion, rack body while opening described artificial blood vessel strutted by entirety, correspondingly described multiple opening is also opened, when blood in autologous vein flows into artificial blood vessel by near-end, part blood flows in the blister cavities that formed by described first overlay film and the second overlay film via described multiple opening, this blister cavities is filled and heaves, not only fill up the space between artificial blood vessel and autologous vein wall, and facilitate fitting tightly between artificial blood tube wall and autologous vein wall, artificial blood vessel is made closely to be anchored on autologous vein wall, to prevent the generation of internal hemorrhage due to trauma.
Preferably, described multiple split ring is uniformly distributed around the circumference of described first overlay film.
Adopt said structure, equally distributed multiple opening can make blood fill equably in the blister cavities formed by described first overlay film and the second overlay film, ensures that blister cavities is filled and heaves.
Preferably, on the axial direction of described artificial blood vessel, the proximal edge of a little higher than described first overlay film of proximal edge of described second overlay film.
Adopt said structure, when blood in autologous vein flows into artificial blood vessel by near-end, part blood can flow towards the direction, place, gap between artificial blood vessel and autologous vein wall, the outflow of this part blood can be stopped by the raised area of the proximal edge of described second overlay film, ensure that the blood in autologous vein flows in artificial blood vessel, to improve anti-internal hemorrhage due to trauma effect.
Preferably, the proximal edge of described second overlay film and remote edge all utilize silk sutures in the corresponding position of described first overlay film.
The remote edge of described second overlay film is pasted onto by medical seccotine on the outer surface of described first overlay film, after implanting, expand under blood flow impacts and form self-styled closed loop.
Preferably, bare bracket is provided with in the proximal end of described rack body.
Preferably, described first overlay film and the second overlay film are made by medical macromolecular materials, and described rack body is worked out by medical alloy material.
Preferably, the thickness of the medical macromolecular materials that described second overlay film adopts is less than the thickness of described first overlay film, and the flexibility of medical macromolecular materials that the former adopts is better than the latter.
Preferably, a blister cavities formed by described first overlay film and the second overlay film is at least formed at the proximal part of described Stent-graft.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the artificial blood vessel preventing internal hemorrhage due to trauma;
Fig. 2 is the top view of artificial blood vessel shown in Fig. 1, wherein eliminates bare bracket.
Detailed description of the invention
Referring to Fig. 1 ~ Fig. 2, the detailed description of the invention of the Stent-graft of internal hemorrhage due to trauma that prevents described in the utility model is described in detail.
As shown in Figure 1, the first overlay film 2 that the Stent-graft of internal hemorrhage due to trauma comprises rack body 1 and is coated on outside this rack body 1 is prevented.Wherein, rack body 1 entirety is in straight cylinder shape (being namely consistent along columnar length direction diameter), and its length is 30 ~ 160mm, and its diameter is 20 ~ 40mm.Bare bracket 3 is provided with at the near-end of rack body 1.Rack body 1 and bare bracket 3 are made up of multiple and single ringwise " Z/V " shape structure or braiding structure, and it is made up of medical alloy material, as niti-shaped memorial alloy, NiTi superelastic alloy, cobalt chromium dynamax, 316L medical stainless steel alloy etc.The length of the first overlay film 2 entirety also in straight cylinder shape is 30 ~ 160mm, its diameter is 20 ~ 40mm, it is made by the medical macromolecular materials of the low murder by poisoning of human body or nonhazardous, comprise blood compatibility and non-blood compatibility material, biodegradable and nonbiodegradable type, as polyester woven thing, politef, polyamide yarn fabric, polypropylene spun fabric.Rack body 1 usually by silk sutures on the first overlay film 2, this suture generally adopts the materials such as polypropylene, polyester, polyamide, real silk, politef, fluorothene to make.
Outside the first overlay film 2, the second overlay film 4 is coated with at the proximal part of Stent-graft, this second overlay film 4 is made up of aforementioned medical macromolecular materials or flexible high molecular material, the thickness of the second overlay film 4 be made up of macromolecular material is less than the first overlay film 2, and the former flexibility is better than the latter.Second overlay film 4 entirety is the circle shape part coaxial with Stent-graft, and its bore is greater than the first overlay film 2 ~ 6 millimeters.As shown in Figure 1, the remote edge of this second overlay film 4 utilizes aforementioned silk sutures in the corresponding position of the first overlay film 2, the remote edge of the second overlay film 4 and the first overlay film 2 is formed and is tightly connected; The proximal edge of proximal edge a little higher than first overlay film 2 on the axial direction of Stent-graft of the second overlay film 4, and the proximal edge of this second overlay film 4 utilizes aforementioned suture to be optionally sewn on the first overlay film 2, four openings 5 are formed thus in this side, as shown in Figure 2, these four openings 5 are uniformly distributed around the circumference of the first overlay film 2.
A blister cavities is formed by the first overlay film 2 and the second overlay film 4, when artificial blood vessel navigates to lesion portion, rack body 1 open while artificial blood vessel strutted by entirety, correspondingly four openings 5 are also opened, when blood in autologous vein flows into artificial blood vessel by near-end, part blood flows in the blister cavities that formed by the first overlay film 2 and the second overlay film 4 via aforementioned four openings 5, this blister cavities is filled and heaves, and and then formed thrombosis, not only fill up the space between artificial blood vessel and autologous vein wall, and facilitate fitting tightly between artificial blood tube wall and autologous vein wall, artificial blood vessel is made closely to be anchored on autologous vein wall, to prevent the generation of internal hemorrhage due to trauma.In addition, for part serious arteriosclerosis case, because of the existence of plaque, cause columnar support can not completely and tube wall fit, because the blister cavities between the first overlay film 2 and the second overlay film 4 is flexible structure, can guarantee that laminating that arteriosclerosis plaque causes is bad by its expansion to be corrected, to improve anti-internal hemorrhage due to trauma effect.
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 done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Such as, as shown in Figure 2, form four openings 5 in the above-described embodiments, however not limited thereto, when the proximal edge of the second overlay film utilizes silk sutures on the first overlay film, also optionally formed around equally distributed three openings of the first overlay film or six openings etc.
Again such as, in the above-described embodiments, the remote edge of the second overlay film 4 utilizes silk sutures in the corresponding position of the first overlay film 2, but not limited thereto, and the remote edge of the second overlay film is also pasted onto by medical seccotine on the outer surface of the first overlay film.
Again such as, in the above-described embodiments, rack body 1 is straight pipe type support, namely overall in straight cylinder shape (being namely consistent along columnar length direction diameter), also can be tapered stent (namely having increase and decrease along diameter on columnar length direction), but not limited thereto, rack body also can be branch type support.
Again such as, in the above-described embodiments, circle second overlay film is provided with at the proximal part of Stent-graft, namely a blister cavities formed by the first overlay film and the second overlay film is defined, but it is not limited thereto, also multiple second overlay films be axially arranged side by side along it can be set at the proximal part of Stent-graft, form multiple blister cavities thus.
Claims (9)
1. prevent a Stent-graft for internal hemorrhage due to trauma, comprise rack body (1) and be coated on this rack body (1) the first overlay film (2) outward, it is characterized in that,
The second overlay film (4) is coated with in described first overlay film (2) outside at the proximal part of described Stent-graft, remote edge and described first overlay film (2) of this second overlay film (4) are tightly connected, its proximal edge is optionally connected to be formed discontinuous closed structure in this side with described first overlay film (2), forms the multiple openings (5) entered for blood in the blister cavities that formed by described first overlay film (2) and the second overlay film (4) thus.
2. the Stent-graft preventing internal hemorrhage due to trauma according to claim 1, is characterized in that, described multiple opening (5) is uniformly distributed around the circumference of described first overlay film (2).
3. the Stent-graft preventing internal hemorrhage due to trauma according to claim 1, it is characterized in that, on the axial direction of described Stent-graft, the proximal edge of a little higher than described first overlay film (2) of proximal edge of described second overlay film (4).
4. the Stent-graft preventing internal hemorrhage due to trauma according to claim 1, it is characterized in that, the proximal edge of described second overlay film (4) and remote edge all utilize silk sutures in the corresponding position of described first overlay film (2).
5. the Stent-graft preventing internal hemorrhage due to trauma according to claim 1, it is characterized in that, the remote edge of described second overlay film (4) is pasted onto by medical seccotine on the outer surface of described first overlay film (2), after implanting, expand under blood flow impacts and form self-styled closed loop.
6. the Stent-graft preventing internal hemorrhage due to trauma according to claim 1, is characterized in that, is provided with bare bracket (3) in the proximal end of described rack body (1).
7. the Stent-graft preventing internal hemorrhage due to trauma according to claim 1, it is characterized in that, described first overlay film (2) and the second overlay film (4) are made by medical macromolecular materials, and described rack body (1) is worked out by medical alloy material.
8. the Stent-graft preventing internal hemorrhage due to trauma according to claim 7, it is characterized in that, the thickness of the medical macromolecular materials that described second overlay film (4) adopts is less than the thickness of described first overlay film (2), and the flexibility of medical macromolecular materials that the former adopts is better than the latter.
9. the Stent-graft preventing internal hemorrhage due to trauma according to claim 1, it is characterized in that, at least form a blister cavities formed by described first overlay film (2) and the second overlay film (4) at the proximal part of described Stent-graft.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420496651.XU CN204072390U (en) | 2014-08-29 | 2014-08-29 | Prevent the Stent-graft of internal hemorrhage due to trauma |
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| CN201420496651.XU CN204072390U (en) | 2014-08-29 | 2014-08-29 | Prevent the Stent-graft of internal hemorrhage due to trauma |
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| CN204072390U true CN204072390U (en) | 2015-01-07 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106420126A (en) * | 2016-10-31 | 2017-02-22 | 中山大学附属第医院 | Vascular stent |
| CN107822739A (en) * | 2016-09-07 | 2018-03-23 | 先健科技(深圳)有限公司 | Intraluminal stent and intraluminal stent system |
| CN109077836A (en) * | 2015-12-30 | 2018-12-25 | 先健科技(深圳)有限公司 | Intraluminal stent |
| CN109464213A (en) * | 2018-12-20 | 2019-03-15 | 东莞先健畅通医疗有限公司 | Overlay film frame and overlay film frame system |
| WO2019128780A1 (en) * | 2017-12-28 | 2019-07-04 | 先健科技(深圳)有限公司 | Luminal stent |
| CN111700712A (en) * | 2020-05-21 | 2020-09-25 | 普霖医疗科技(广州)有限公司 | Branch covered stent |
| CN113017914A (en) * | 2021-03-17 | 2021-06-25 | 复旦大学附属中山医院 | Peripheral blood vessel composite stent for preventing intimal hyperplasia at access opening of covered stent |
| CN113171147A (en) * | 2021-04-07 | 2021-07-27 | 北京昕为医疗科技有限公司 | Grafts suitable for treating vascular diseases |
-
2014
- 2014-08-29 CN CN201420496651.XU patent/CN204072390U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109077836A (en) * | 2015-12-30 | 2018-12-25 | 先健科技(深圳)有限公司 | Intraluminal stent |
| CN107822739A (en) * | 2016-09-07 | 2018-03-23 | 先健科技(深圳)有限公司 | Intraluminal stent and intraluminal stent system |
| CN106420126A (en) * | 2016-10-31 | 2017-02-22 | 中山大学附属第医院 | Vascular stent |
| WO2019128780A1 (en) * | 2017-12-28 | 2019-07-04 | 先健科技(深圳)有限公司 | Luminal stent |
| CN109966033A (en) * | 2017-12-28 | 2019-07-05 | 先健科技(深圳)有限公司 | Intraluminal stent |
| CN109966033B (en) * | 2017-12-28 | 2022-05-20 | 先健科技(深圳)有限公司 | Lumen stent |
| CN109464213A (en) * | 2018-12-20 | 2019-03-15 | 东莞先健畅通医疗有限公司 | Overlay film frame and overlay film frame system |
| CN109464213B (en) * | 2018-12-20 | 2020-12-15 | 深圳市先健畅通医疗有限公司 | Covered stent and covered stent system |
| CN111700712A (en) * | 2020-05-21 | 2020-09-25 | 普霖医疗科技(广州)有限公司 | Branch covered stent |
| CN113017914A (en) * | 2021-03-17 | 2021-06-25 | 复旦大学附属中山医院 | Peripheral blood vessel composite stent for preventing intimal hyperplasia at access opening of covered stent |
| CN113171147A (en) * | 2021-04-07 | 2021-07-27 | 北京昕为医疗科技有限公司 | Grafts suitable for treating vascular diseases |
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