CN1203813C - 人造贲门 - Google Patents

人造贲门 Download PDF

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CN1203813C
CN1203813C CNB981114075A CN98111407A CN1203813C CN 1203813 C CN1203813 C CN 1203813C CN B981114075 A CNB981114075 A CN B981114075A CN 98111407 A CN98111407 A CN 98111407A CN 1203813 C CN1203813 C CN 1203813C
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tube chamber
film
skirt
cardia
artificial
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CN1241399A (zh
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孟凯
王震
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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
    • 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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  • Health & Medical Sciences (AREA)
  • Gastroenterology & Hepatology (AREA)
  • Pulmonology (AREA)
  • Cardiology (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Transplantation (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Vascular Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Prostheses (AREA)

Abstract

本发明设及一种人造贲门，由管腔(1)、固定圈(2)、膜瓣(3)及膜裙(4)构成；固定圈(2)包覆在管腔(1)外表面上；膜瓣(3)呈弧面形，位于管腔(1)内，与管腔(1)内表面相连，其凸面对着管腔(1)的进口，凹面对着管腔(1)的出口；膜裙(4)呈管状，其一端与膜瓣(3)连为一体，另一端伸出管腔(1)；在正常情况下，膜瓣(3)及膜裙(4)可通过食物，同时可防止返流。在患者进形食管各段肿瘤切除，贲门胃底切除和胃肠代替食管手术后将本发明植入吻合口，可有效防止吻合口瘘、吻合口狭窄及返流性食管炎等三大术后并发症的发生。

Description

人造贲门
                              技术领域
本发明涉及一种人体器官代用品，具体地说是一种人造贲门。
                              背景技术
目前，无论是国内还是国外，胸外科所进行的食管肿瘤切除、贲门胃底肿瘤切除、胃肠代替食管等手术一直存在三大无法解决的难题：即患者术后易发生吻合口痿、吻合口狭窄及返流性食管炎。尽管医学界不断改进吻合方法，发明了各种类型的吻合器，使上述三大术后并发症的发病率有所下降。目前，国内使用吻合器进行吻合已使痿的发生率从5-7％降至2-4％，但吻合口狭窄和返流性食管炎仍是常见且相当严重的并发症。这些并发症的存在或者直接威胁受术者的生命，或者严重影响其术后的生活质量。
                              发明内容
本发明要解决的技术问题就是患者在进行食管各段肿瘤切除、贲门胃底切除和胃肠代替食管手术后易发生吻合口痿、吻合口狭窄及返流性食管炎等术后并发症的问题。
为解决上述技术问题，本发明提供了一种人造贲门，它由管腔、固定圈、膜瓣及膜裙构成，固定圈包覆在管腔外表面上，膜瓣呈弧面形，位于管腔内，与管腔内表面相连，其凸面对着管腔的进口，凹面对着管腔的出口；膜裙呈管状，其一端与膜瓣连为一体，另一端伸出管腔；在正常情况下，膜瓣3及膜裙4可通过食物，同时可防止返流。
本发明结构简单，制作方便，安全可靠，在患者进行食管各段肿瘤切除，贲门胃底切除和胃肠代替食管手术后植入吻合口，可有效防止吻合口瘘、吻合口狭窄及返流性食管炎等三大术后并发症的发生。
                         附图说明
图1为本发明的结构示意图。
图2为图1的左视图。
                        具体实施方式
参见各附图，本发明之管腔1由管状骨架11和管状被膜12构成，骨架11被封在被膜12内。所述骨架11由两段展开后均为连续性的“Z”宇型管状网架构成，该“Z”字型网架由医用不锈钢丝制成，其两端各个端点的连线形成一个正多边形，一般为正六边形—正十边形，本实施例为正八边形。两段网架相邻两端的各个端点均位于同一圆周上且相互交错排列，两者之间通过尼龙丝穿接成一体。整个骨架11被由医用硅橡胶薄膜制成的被膜12内外封膜后即形成一有固定形状和恒定弹力的管腔1。管腔1的直径是中间小两头大，两端端部形成喇叭口，中部直径为14-17MM，上下口即两端直径为22-25MM，长度为30-50MM。
本发明之固定圈2由医用涤纶材料制成，包覆在管腔1被膜的外表面上，其宽度为15-25MM。为了增大固定圈2与人体组织的接触面，可将固定圈2的表面做成螺旋状。
本发明之膜瓣3由医用弹性材料制成，呈弧面状，覆合在管腔1被膜的内表面上，其凸面对着管腔1的进口，凹面对着管腔1的出口。膜瓣3厚度为0.2-0.5MM，数量一般为2--6个，本实施例为3个。
本发明之膜裙4亦由医用弹性材料制成，其一端与膜瓣3覆合为一体，另一端伸出管腔1。其长度为35-55MM，厚度为0.08-0.15MM.直径为14-17MM。为了使膜瓣3的回弹力很好的作用到膜裙4上，覆合时应将膜瓣3拉平后完整的覆合在膜裙4上。这样，当本发明处于自然状态时，在膜瓣3回弹力的作用下，膜裙4伸出管腔1的一端是闭合的。
由于固定圈2是用医用涤纶材料制成，与人体组织有较好的亲合性，且管腔1的两端均呈喇叭口，因此本发明植入吻合口后能够很好的定位。
本发明的工作过程如下：在一般情况下，本发明之膜裙4呈闭合状。当人体进食时，食物下行到本发明的管腔1内时，食物的重力作用到膜瓣3上，使其向下打开，食物即可通过膜瓣3和膜裙4进入胃内。当返流时，由于返流物对膜裙4的压力和膜瓣3自身的回弹力的方向一至，这样膜裙4就在返流物压力和膜瓣3回弹力的双重作用下封闭并回缩至管腔1内，严密的封堵住返流物质，隔绝返流物质与食管的接触。当呕吐时，由子压力猛然加大，推动膜裙4迅速向上滑行翻起，并带动膜瓣3一起向上打开，此时膜瓣3完全失效，胃与食管之间畅通无阻。呕吐后，通过次水或进食，即可使膜裙4在水或食物重力的作用下下滑，并带动膜瓣3复位。

Claims (7)

1、人造贲门，由管腔、固定圈、膜瓣及膜裙构成，固定圈包覆在管腔外表面上，其特征在于膜瓣(3)呈弧面形，位于管腔(1)内，与管腔(1)内表面相连，其凸面对着管腔(1)的进口，凹面对着管腔(1)的出口；膜裙(4)呈管状，其一端与膜瓣(3)连为一体，另一端伸出管腔(1)；在正常情况下，膜瓣(3)及膜裙(4)可通过食物，同时可防止返流。
2，如权利要求1所述的人造贲门，其特征在于管腔(1)由管状骨架(11)及管状被膜(12)构成，骨架(11)被封在被膜(12)内。
3、如权利要求2所述的人造贲门，其特征在于骨架(11)由两段展开来为连续性的“z”字型管状网架构成，该网架的两端各个端点的连线均形成一个正多边形，两段网架相邻两端的各个端点均位于同一圆周上且相互交错排列，两者之间通过尼龙丝穿接成一体。
4、如权利要求3所述的人造贲门，其特征在于“z”宇型管状网架由医用不锈钢丝制成，其两端各个端点连线所形成的正多边形为正六边形一正十边形。
5、如权利要求1所述的人造贲门，其特征在于膜瓣(3)由医用弹性材料制成，其数量为2-6个，厚度为0.2-0.5MM。
6、如权利要求1所述的人造贲门，其特征在于固定圈(2)表面呈螺旋状，由医用涤纶制成。
7、如权利要求1所述的人造贲门，其特征在于膜裙(4)由医用弹性材料制成，厚度为0.08-0.15MM。
CNB981114075A 1998-07-13 1998-07-13 人造贲门 Expired - Lifetime CN1203813C (zh)

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CNB981114075A CN1203813C (zh) 1998-07-13 1998-07-13 人造贲门

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CNB981114075A CN1203813C (zh) 1998-07-13 1998-07-13 人造贲门

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CN1241399A CN1241399A (zh) 2000-01-19
CN1203813C true CN1203813C (zh) 2005-06-01

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100362971C (zh) * 2005-11-16 2008-01-23 程英升 贲门支架
CN107822750B (zh) * 2017-12-15 2023-09-26 郑州大学第一附属医院 管道抗返流支架

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