CN2595394Y - 钛镍记忆合金防反流食道内支架 - Google Patents

钛镍记忆合金防反流食道内支架 Download PDF

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CN2595394Y
CN2595394Y CN02258921U CN02258921U CN2595394Y CN 2595394 Y CN2595394 Y CN 2595394Y CN 02258921 U CN02258921 U CN 02258921U CN 02258921 U CN02258921 U CN 02258921U CN 2595394 Y CN2595394 Y CN 2595394Y
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杨西群
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    • 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
    • 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
    • A61F2/24—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
    • A61F2/2412—Heart valves ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body with soft flexible valve members, e.g. tissue valves shaped like natural valves
    • A61F2/2418—Scaffolds therefor, e.g. support stents
    • 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
    • A61F5/00—Orthopaedic methods or devices for non-surgical treatment of bones or joints; Nursing devices; Anti-rape devices
    • A61F5/0003—Apparatus for the treatment of obesity; Anti-eating devices
    • A61F5/0013—Implantable devices or invasive measures
    • A61F5/0076—Implantable devices or invasive measures preventing normal digestion, e.g. Bariatric or gastric sleeves
    • 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
    • A61F2/86—Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure
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    • 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
    • A61F2002/044—Oesophagi or esophagi or gullets

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Abstract

一种用钛镍记忆合金丝材编织的网状支撑架和用钛镍记忆合金丝材制作的可自动开合的防反流瓣、用医用硅橡胶覆膜制作而成的防反流食道内支架。其特征在于用钛镍记忆合金丝材制作的网状支撑架和与之相连接的用钛镍记忆合金丝材制作的可自动开合的防反流瓣，打开时为圆柱状，恢复后为锥形体，覆上硅橡胶膜的防反流瓣为密闭状态。正常进食时，在吞咽的作用力下瓣膜会自动打开，使食物顺利进入胃中。当胃部压力过大向上反时，瓣膜在胃压的作用力下紧密闭合，液体和食物不易反上，具有喷门括约肌的防反流作用。

Description

钛镍记忆合金防反流食道内支架
本实用新型涉及一种防反流食道内支架，特别涉及一种用钛镍记忆合金丝材编织的网状支撑架和用钛镍记忆合金丝材制作的可自动开合的防反流瓣、用医用硅橡胶覆膜制作而成的防反流食道内支架。
现在临床上使用的有两种防反流食道内支架，其一种防反流瓣是用医用硅橡胶覆膜制作而成。其主要缺点是用硅橡胶制作的瓣膜，弹性差，闭合不好，尤其是在人体卧位时胃液很容易倒流至食道，造成食道壁溃疡。另外还有一种用医用硅橡胶覆膜制作而成的薄膜套管，与内支架连接在一起，薄膜套管在胃中为折叠状，使薄膜套管起到防反流的作用。但因薄膜套管在胃中为折叠状，胃肠内的气体不宜从食道排出，造成病人不适。
本实用新型的目的在于克服上述现有技术的缺点，提出一种适用于防止胃肠液体反流的防反流食道内支架，用钛镍记忆合金丝材编织的防反流瓣和医用硅橡胶覆膜制作而成的可自动开合的防反流瓣膜，可起到喷门括约肌的防反流作用。与现在单纯用医用硅橡胶制作的瓣膜比较，有不可相比的优点。在临床上可达到非常理想的防反流效果。
图1是防反流瓣膜支架的主视图
图2是防反流瓣膜关闭状态的俯视图
图3是防反流瓣膜打开状态的侧视图
下面结合附图对本实用新型的结构及工作原理作详细说明。
参照附图，本实用新型包括用钛镍记忆合金丝编织的网状支撑架(1)，网状支撑架一端为喇叭状(2)，网状支撑架的另一端为直口状或喇叭状(3)，用钛镍记忆合金丝制作的防反流开合瓣支撑骨架(4)与(3)连接，防反流可自动开合瓣支撑骨架(4)为蛇形弹簧状(5)，蛇形弹簧打开时为圆柱状(6)闭合时为圆锥状(7)，圆锥的尖部为叠压状(8)。用医用硅橡胶在网状支撑架(1)上的覆膜(9)和可自动开合的防反流瓣骨架蛇形弹簧(5)上的覆膜(10)，整体构成了一种用钛镍记忆合金丝材编织的、用医用硅橡胶覆膜制作而成可自动开合的的防反流食道内支架。
这种用钛镍记忆合金丝材编织的、用医用硅橡胶覆膜制作而成的防反流食道内支架的工作原理，主要是利用了钛镍记忆合金的生物相容性、形状记忆功能和超弹性性能，和医用硅橡胶的密封防渗漏性。用钛镍记忆合金丝材编织的网状支撑架(1)对食道起到扩张和支撑作用。支撑架一端的喇叭口(2)是防止内支架下滑，起到定位作用。防反流瓣是用钛镍记忆合金丝材制作的蛇形弹簧(4)定型为锥体形状(6)，圆锥端部(8)叠压在一起。在覆硅橡胶膜时，将锥体打开为圆柱状(10)，以便吞咽时食道畅通。恢复为锥形体后，覆上硅橡胶膜的防反流瓣为密闭状态。当正常进食时，在吞咽的作用力下瓣膜会自动打开，使食物顺利进入胃中。当胃部压力过大向上反时，瓣膜在胃压的作用力下紧密闭合，液体和食物不易反上。
由此可见，本实用新型所设计的防反流食道内支架从结构及工作原理上都可满足临床上的需要，优于其他防反流装置，可达到理想的防反流目的。

Claims (6)

1、钛镍记忆合金防反流食道内支架，包括用钛镍记忆合金丝材编织的网状支撑架及其相连接的用钛镍记忆合金丝制作的可自动开合的防反流瓣。本实用新型的特征是，所说的用钛镍记忆合金丝编织的网状支撑架(1)的一端为喇叭状(2)，网状支撑架的另一端为直口状或喇叭状(3)。
2、根据权利要求(1)所述的防反流食道内支架，其特征在于，所说的防反流食道内支架直口状或喇叭状(3)与用钛镍记忆合金丝制作的防反流开合瓣支撑骨架(4)连接。
3、根据权利要求(1)、(2)所述的防反流食道内支架，其特征在于，防反流可自动开合瓣支撑骨架(4)为蛇形弹簧状(5)，蛇形弹簧打开时为圆柱状(6)闭合时为圆锥状(7)，圆锥的尖部为叠压状(8)。
4、根据权利要求(1)、(2)、(3)所述的防反流食道内支架，其特征在于，用医用硅橡胶在网状支撑架(1)上覆膜和在可自动开合的防反流瓣骨架蛇形弹簧(5)上覆膜。
5、根据权利要求(1)、(2)、(3)、(4)所述的防反流食道内支架，其特征在于，防反流瓣是用钛镍记忆合金丝材制作的蛇形弹簧定型为锥体形状，圆锥端部叠压在一起。整体构成了一种用钛镍记忆合金丝材制作的、用医用硅橡胶覆膜制作而成可自动开合的的防反流食道内支架。
6、根据权利要求(1)、(2)、(3)、(4)、(5)所述的防反流食道内支架，其特征在于，在硅橡胶覆膜时，将锥体打开为圆柱状(10)，以便吞咽时食道畅通，恢复为锥形体后(6)，覆上硅橡胶膜的防反流瓣为密闭状态，起到喷门括约肌的防反流作用。
CN02258921U 2002-11-11 2002-11-11 钛镍记忆合金防反流食道内支架 Expired - Fee Related CN2595394Y (zh)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2007056946A1 (en) * 2005-11-16 2007-05-24 Yingsheng Cheng A cardia stent
CN1836641B (zh) * 2005-03-21 2010-05-05 太雄医疗器株式会社 食道支撑器
CN102599997A (zh) * 2012-04-22 2012-07-25 张发明 一种可分片脱落的非血管腔道支架
EP2957261A1 (en) * 2014-06-20 2015-12-23 Ethicon Endo-Surgery, Inc. Artificial sphincter
CN105658175A (zh) * 2013-08-07 2016-06-08 波士顿科学国际有限公司 用于聚合物支架的硅酮回流阀
CN108186160A (zh) * 2017-11-28 2018-06-22 王勇 一种防返流食管支架
CN109481106A (zh) * 2018-12-13 2019-03-19 常州新区佳森医用支架器械有限公司 食道用防返流支架

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1836641B (zh) * 2005-03-21 2010-05-05 太雄医疗器株式会社 食道支撑器
CN100362971C (zh) * 2005-11-16 2008-01-23 程英升 贲门支架
WO2007056946A1 (en) * 2005-11-16 2007-05-24 Yingsheng Cheng A cardia stent
CN102599997A (zh) * 2012-04-22 2012-07-25 张发明 一种可分片脱落的非血管腔道支架
CN102599997B (zh) * 2012-04-22 2015-09-09 张发明 一种可分片脱落的非血管腔道支架
CN105658175B (zh) * 2013-08-07 2017-09-19 波士顿科学国际有限公司 用于聚合物支架的硅酮回流阀
US10314685B2 (en) 2013-08-07 2019-06-11 Boston Scientific Scimed, Inc. Silicone reflux valve for polymeric stents
CN105658175A (zh) * 2013-08-07 2016-06-08 波士顿科学国际有限公司 用于聚合物支架的硅酮回流阀
EP2957267A1 (en) * 2014-06-20 2015-12-23 Ethicon Endo-Surgery, Inc. Artificial sphincter
EP2957261A1 (en) * 2014-06-20 2015-12-23 Ethicon Endo-Surgery, Inc. Artificial sphincter
CN108186160A (zh) * 2017-11-28 2018-06-22 王勇 一种防返流食管支架
CN109481106A (zh) * 2018-12-13 2019-03-19 常州新区佳森医用支架器械有限公司 食道用防返流支架
CN109481106B (zh) * 2018-12-13 2023-11-10 常州新区佳森医用支架器械有限公司 食道用防返流支架

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