WO2020073972A1 - 一种免缝合一体式分支覆膜支架血管 - Google Patents

一种免缝合一体式分支覆膜支架血管 Download PDF

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Publication number
WO2020073972A1
WO2020073972A1 PCT/CN2019/110460 CN2019110460W WO2020073972A1 WO 2020073972 A1 WO2020073972 A1 WO 2020073972A1 CN 2019110460 W CN2019110460 W CN 2019110460W WO 2020073972 A1 WO2020073972 A1 WO 2020073972A1
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blood vessel
stent
suture
artificial blood
pressure ring
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PCT/CN2019/110460
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English (en)
French (fr)
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卞晓明
钱向阳
杨延宗
夏云龙
徐庶
郑成福
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大连科万维医疗科技有限公司
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Publication of WO2020073972A1 publication Critical patent/WO2020073972A1/zh

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    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/04Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06Blood vessels
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2/00Filters 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
    • A61F2/02Prostheses implantable into the body
    • A61F2/04Hollow or tubular parts of organs, e.g. bladders, tracheae, bronchi or bile ducts
    • A61F2/06Blood vessels
    • A61F2/07Stent-grafts
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61FFILTERS 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
    • A61F2210/00Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2210/0014Particular material properties of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof using shape memory or superelastic materials, e.g. nitinol

Definitions

  • the invention relates to a suture-free integrated branched stent graft blood vessel, which belongs to the technical field of medical devices.
  • Artificial blood vessel-stent grafting is an important method for treating aortic dissection and other large vessel diseases. After the artificial blood vessel-implanted stent graft is transplanted, due to the pressure of blood flow in the blood vessel, there is often a problem of anastomotic leakage at the pinhole of the anastomosis. In addition, the vascular anastomosis takes a long time and increases the cerebral ischemia time. These are postoperative The main cause of complications and increased deaths. Therefore, hemostasis of anastomosis is always an urgent problem to be solved in artificial blood vessel-stent grafting, and a more effective, practical and simple way is needed to achieve the purpose of hemostasis.
  • the invention uses the elasticity of the pressure ring to close the anastomotic opening in a clamping manner, which solves the above problems.
  • the invention provides a suture-free integrated branched stent graft blood vessel.
  • the suture-free integrated branch stent graft blood vessel includes an artificial blood vessel, a stent graft and a pressure ring assembly; the distal end of the artificial blood vessel and the stent graft The proximal end of the connection; the pressure ring assembly includes a pressure ring and a fixing member; the outer wall of the artificial blood vessel is provided with a fixing member; one end of the pressure ring is movably connected to the fixing member, so that the pressure ring can be fixed around The piece changes the position of the pressure ring relative to the artificial blood vessel.
  • the shape of the pressing ring is preferably a corrugated ring.
  • the inner diameter of the pressure ring is smaller than the outer diameter of the stent graft.
  • the pressure ring is made of an elastic metal or a polymer material, and it is further preferable that the pressure ring is made of a nickel-titanium alloy, which has shape memory capability and super elasticity.
  • the pressure ring assembly further includes a cover film, the cover film is placed outside the stent graft, and the cover film is connected to the fixing member.
  • the artificial blood vessel preferably includes an artificial blood vessel main branch and 0-4 artificial blood vessel branches.
  • the 0-4 artificial blood vessel branches respectively extend outward from the artificial blood vessel main branch and are in fluid communication with the artificial blood vessel main branch.
  • the distal end of the main branch of the artificial blood vessel is connected to the proximal end of the stent graft.
  • the inner layer of the artificial blood vessel is preferably made of polyester or polytetrafluoroethylene.
  • the stent graft includes a stent and a membrane, and the membrane is fixed on the stent.
  • the stent preferably includes a stent main branch and 0-1 stent branches.
  • the 0-1 stent branches extend outward from the stent main branch and are in fluid communication with the stent main branch. The end is connected to the proximal end of the main branch of the stent.
  • the support is preferably made of a memory alloy, and further preferably, the support is made of a nickel-titanium alloy.
  • the suture-free integrated branched stent graft blood vessel of the present invention utilizes the elasticity of the pressure ring to clamp and close the anastomotic opening to avoid the method of suture the anastomotic opening in artificial blood vessel replacement surgery, and achieves the effects of hemostasis and reducing operation time.
  • Example 1 is a schematic view of the structure of a suture-free integrated branched stent graft blood vessel according to Example 1;
  • Example 2 is a state diagram before use of the suture-free integrated branch stent graft blood vessel according to Example 1;
  • Example 3 is a state diagram after use of the suture-free integrated branched stent graft blood vessel according to Example 1;
  • a suture-free integrated branched stent graft vessel as shown in FIG. 1, the suture-free integrated branched stent graft vessel includes an artificial blood vessel made of polytetrafluoroethylene, a stent graft, and a pressure ring assembly ;
  • the artificial blood vessel includes an artificial blood vessel main branch 11 and two artificial blood vessel branches 12, and the two artificial blood vessel branches 12 respectively extend outward from the artificial blood vessel main branch 11 and are in fluid communication with the artificial blood vessel main branch 11;
  • the stent graft includes a stent made of nickel-titanium alloy and a membrane 23;
  • the membrane 23 is sutured in the stent
  • the bracket includes a bracket main branch 21 and a bracket branch 22, and the bracket branch 22 extends outward from the bracket main branch 21 and is in fluid communication with the bracket main branch 21;
  • the distal end of the main branch 11 of the artificial blood vessel is connected to the proximal end of the main branch 21 of the stent;
  • the pressing ring assembly includes a wave pressing ring 33 made of nickel-titanium alloy, a cover film 32, and a fixing member 31;
  • a fixing member 31 is provided on the outer wall of the main branch 11 of the artificial blood vessel
  • the cover film 32 is placed outside the main support 21 of the bracket, and the cover film 32 is connected to the fixing member 31; one end of the pressing ring 33 is movably connected to the fixing member 31, so that the pressing ring 33 has a packaging state and work
  • the other end (free end) of the pressure ring 33 is pre-displaced to the outer wall of the main branch 11 of the artificial blood vessel and fixed under the action of external force.
  • the working state is to remove the other end of the pressure ring 33 in the main branch of the artificial blood vessel.
  • part of the stent graft is placed into the aortic cavity, and the stent graft props up the aortic wall;
  • the free end of the pressure ring 33 is removed, and the free end of the pressure ring 33 is displaced from the outer wall of the main branch 11 of the artificial blood vessel to the outer wall of the autologous blood vessel. Since the inner diameter of the pressure ring 33 is smaller than the outer diameter of the main branch 21 of the stent, the pressure ring The radial pressure in the 33 blood vessel and the radial support force of the main support 21 of the stent to the outside of the blood vessel simultaneously, the autologous blood vessel and the main support 21 of the stent closely fit together to prevent blood from leaking;

Abstract

一种免缝合一体式分支覆膜支架血管,属于医疗器械技术领域。免缝合一体式分支覆膜支架血管包括人工血管、覆膜支架、压环组件;人工血管的远端与覆膜支架的近端连接;压环组件包括压环(33)、固定件(31);人工血管的外壁上设有固定件(31);压环(33)的一端活动连接在固定件(31)上,使压环(33)可绕固定件(31)改变压环(33)相对人工血管的位置。免缝合一体式分支覆膜支架血管利用压环(33)的弹性,以夹紧封闭吻合口的方式而免除人工血管置换术中吻合口缝合的操作,达到止血和降低手术时间的效果。

Description

一种免缝合一体式分支覆膜支架血管 技术领域
本发明涉及一种免缝合一体式分支覆膜支架血管,属于医疗器械技术领域。
背景技术
人工血管-覆膜支架移植术是治疗主动脉夹层瘤及其它大血管病变的重要手段。人工血管-覆膜支架移植后,由于血管内血流流通的压力作用,往往存在吻合口针孔漏血的问题,另外,血管吻合费时长,也增加了脑缺血时间,这些都是术后并发症的发生和增加死亡的主要原因。因此,吻合口止血始终是人工血管-覆膜支架移植术中亟待解决的问题,需要一种更为有效,切实可行的简便方式来达到吻合口止血的目的。
发明内容
本发明利用压环的弹性,以夹紧的方式封闭吻合口,解决了上述问题。
本发明提供了一种免缝合一体式分支覆膜支架血管,所述免缝合一体式分支覆膜支架血管包括人工血管、覆膜支架、压环组件;所述人工血管的远端与覆膜支架的近端连接;所述压环组件包括压环、固定件;所述人工血管的外壁上设有固定件;所述压环的一端活动连接在固定件上,使所述压环可绕固定件改变压环相对人工血管的位置。
本发明优选为所述压环的形状为波形环。
本发明优选为所述压环的内径小于覆膜支架的外径。
本发明优选为所述压环由弹性金属或高分子材料制成,进一步优选为所述压环由镍钛合金制成,所述镍钛合金具有形状记忆能力和超弹性。
本发明优选为所述压环组件还包括盖膜,所述盖膜置于覆膜支架外,且所述盖膜与固定件连接。
本发明优选为所述人工血管包括人工血管主支和0-4个人工血管分支,0-4个所述人工血管分支分别从人工血管主支向外延伸并与人工血管主支流体连通,所述人工血管主支的远端与覆膜支架的近端连接。
本发明优选为所述人工血管的内层由涤纶或聚四氟乙烯制成。
本发明优选为所述覆膜支架包括支架、膜,膜固定在支架上。
本发明优选为所述支架包括支架主支和0-1个支架分支,0-1个所述支架分支从支架主支向外延伸并与支架主支流体连通,所述人工血管主支的远端与支架主支的近端 连接。
本发明优选为所述支架由记忆合金制成,进一步优选为所述支架由镍钛合金制成。
本发明有益效果为:
本发明所述免缝合一体式分支覆膜支架血管利用压环的弹性,以夹紧封闭吻合口的方式而免除人工血管置换术中吻合口缝合的方法,达到止血和降低手术时间的效果。
附图说明
本发明附图3幅,
图1为实施例1所述免缝合一体式分支覆膜支架血管的结构示意图;
图2为实施例1所述免缝合一体式分支覆膜支架血管的使用前状态图;
图3为实施例1所述免缝合一体式分支覆膜支架血管的使用后状态图;
其中,11、人工血管主支,12、人工血管分支,21、支架主支,22、支架分支,23、膜,31、固定件,32、盖膜,33、压环。
具体实施方式
下述非限制性实施例可以使本领域的普通技术人员更全面地理解本发明,但不以任何方式限制本发明。
实施例1
一种免缝合一体式分支覆膜支架血管,如图1所示,所述免缝合一体式分支覆膜支架血管包括内层由聚四氟乙烯制成的人工血管、覆膜支架、压环组件;
所述人工血管包括人工血管主支11和2个人工血管分支12,2个所述人工血管分支12分别从人工血管主支11向外延伸并与人工血管主支11流体连通;
所述覆膜支架包括由镍钛合金制成的支架、膜23;
所述膜23缝合在支架内;
所述支架包括支架主支21和1个支架分支22,所述支架分支22从支架主支21向外延伸并与支架主支21流体连通;
所述人工血管主支11的远端与支架主支21的近端连接;
所述压环组件包括由镍钛合金制成的波形压环33、盖膜32、固定件31;
所述人工血管主支11的外壁上设有固定件31;
所述盖膜32置于支架主支21外,且所述盖膜32与固定件31连接;所述压环33一端活动连接在固定件31上,使所述压环33具有包装态和工作态,所述包装态为在外力作用下预先将压环33的另一端(游离端)位移至人工血管主支11外壁并固定, 所述工作态为去除压环33另一端在人工血管主支11外壁的固定后,使压环33另一端在形状记忆能力和超弹性的作用下恢复至支架主支21外壁,且所述压环33的内径小于支架主支21的外径。
实施例2
实施例1所述免缝合一体式分支覆膜支架血管的使用方法,所述使用方法包括如下步骤:
在进行主动脉弓置换术时,需要将患者主动脉弓的中段切除;
如图2所示,将部分覆膜支架置入主动脉腔,覆膜支架将主动脉壁撑起;
如图3所示,去除压环33游离端的束缚,压环33的游离端由人工血管主支11外壁位移至自体血管外壁,由于压环33内径小于支架主支21的外径,在压环33向血管内的径向压力和支架主支21向血管外的径向支撑力同时作用下,自体血管与支架主支21紧密贴合,阻止血液渗出;
在压环33压紧自体血管后,进行后续人工血管缝合工作,完成术式后的主动脉弓如图3所示。

Claims (10)

  1. 一种免缝合一体式分支覆膜支架血管,其特征在于:所述免缝合一体式分支覆膜支架血管包括人工血管、覆膜支架、压环组件;
    所述人工血管的远端与覆膜支架的近端连接;
    所述压环组件包括压环、固定件;
    所述人工血管的外壁上设有固定件;
    所述压环的一端活动连接在固定件上,使所述压环可绕固定件改变压环相对人工血管的位置。
  2. 根据权利要求1所述的免缝合一体式分支覆膜支架血管,其特征在于:所述压环的形状为波形环。
  3. 根据权利要求2所述的免缝合一体式分支覆膜支架血管,其特征在于:所述压环的内径小于覆膜支架的外径。
  4. 根据权利要求3所述的免缝合一体式分支覆膜支架血管,其特征在于:所述压环由弹性金属或高分子材料制成。
  5. 根据权利要求4所述的免缝合一体式分支覆膜支架血管,其特征在于:所述压环组件还包括盖膜,所述盖膜置于覆膜支架外,且所述盖膜与固定件连接。
  6. 根据权利要求5所述的免缝合一体式分支覆膜支架血管,其特征在于:所述人工血管包括人工血管主支和0-4个人工血管分支,0-4个所述人工血管分支分别从人工血管主支向外延伸并与人工血管主支流体连通,所述人工血管主支的远端与覆膜支架的近端连接。
  7. 根据权利要求6所述的免缝合一体式分支覆膜支架血管,其特征在于:所述人工血管的内层由涤纶或聚四氟乙烯制成。
  8. 根据权利要求7所述的免缝合一体式分支覆膜支架血管,其特征在于:所述覆膜支架包括支架、膜,膜固定在支架上。
  9. 根据权利要求8所述的免缝合一体式分支覆膜支架血管,其特征在于:所述支架包括支架主支和0-1个支架分支,0-1个所述支架分支从支架主支向外延伸并与支架主支流体连通,所述人工血管主支的远端与支架主支的近端连接。
  10. 根据权利要求9所述的免缝合一体式分支覆膜支架血管,其特征在于:所述支架由记忆合金制成。
PCT/CN2019/110460 2018-10-12 2019-10-10 一种免缝合一体式分支覆膜支架血管 WO2020073972A1 (zh)

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CN109223250B (zh) * 2018-10-12 2020-12-29 大连科万维医疗科技有限公司 一种免缝合一体式分支覆膜支架血管
CN111358593A (zh) * 2020-03-19 2020-07-03 江苏百优达生命科技有限公司 一种快速连接式开胸血管支架及输送系统
CN112022431B (zh) * 2020-09-07 2021-09-07 浙江大学 一种带组装式免缝合分支的一体式支架人工血管及其应用
CN113425474A (zh) * 2021-06-09 2021-09-24 上海畅迪医疗科技有限公司 一种血管连接装置及其制备方法
CN113558708A (zh) * 2021-09-22 2021-10-29 北京华脉泰科医疗器械股份有限公司 弓部覆膜支架和弓部支架组件
CN115517811B (zh) * 2022-11-01 2023-03-31 北京华脉泰科医疗器械股份有限公司 一体式支架人工血管及人工血管置换套件
CN117159219B (zh) * 2023-11-02 2024-03-08 北京华脉泰科医疗器械股份有限公司 血管假体连接装置及血管假体连接系统

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