CN1197531C - Leg type lower limb artificial vein valve - Google Patents
Leg type lower limb artificial vein valve Download PDFInfo
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- CN1197531C CN1197531C CN 01126981 CN01126981A CN1197531C CN 1197531 C CN1197531 C CN 1197531C CN 01126981 CN01126981 CN 01126981 CN 01126981 A CN01126981 A CN 01126981A CN 1197531 C CN1197531 C CN 1197531C
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Abstract
The present invention relates to the technical field of medical appliances, particularly to a leg type lower-limb artificial vein valve for curing lower-limb back flow vein diseases. The present invention is composed of an artificial vein (1) of which the inner wall is provided with an artificial valve and a metal rack (4) attached to the outer wall of the artificial vein for supporting the artificial vein. The present invention is manufactured according to a normal vein valve structure of a human body, and the vein valve has free opening and closing. The present invention can not only be used for curing lower-limb back flow vein diseases, but also can have the function of expanding narrow veins for a patient with narrow lower-limb veins. The present invention has the advantages of reasonable structure, low manufacturing cost, good histocompatibility and simple surgery, and avoids operation wounds, such as vein anastomosis, etc.
Description
Technical field
The present invention relates to technical field of medical instruments, is a kind of leg type lower limb artificial vein valve for the treatment of lower limb refluence phlkebocholosis.
Background technology
Lower limb refluence phlkebocholosis is domestic and international commonly encountered diseases, domestic more than 15 years old crowd's prevalence can reach 8.4%.Destruction and functional defect that this sick primary factor is the veins of lower extremity valve structure.Acting as of normal veins of lower extremity valve, when human body shank muscle contraction or lower limb are raised, the veins of lower extremity valve-open, venous blood entad refluxes, and is upright or when sitting up straight, the veins of lower extremity valve is closed, and prevents that venous blood from flowing backwards to far-end when the human body tranquillization.If but the veins of lower extremity valve structure destroys and functional defect, the veins of lower extremity blood dyscrasia then can occur flows backwards, cause far-end of limb vein high pressure, cause lower limbs edema, superficial vein varicose, pigmentation, the final syndrome that forms based on chronic ulcer, be commonly called as " mashed always foot ", patient is agonizing, is the intractable commonly encountered diseases that the people deeply hurts.
The method of treatment veins of lower extremity valve disease roughly can be classified as two classes, and a class is a valve repair, promptly by direct or indirect way, repairs the valve of lax or incompetence, recovers the function of its unidirectional opening.Another kind of is that valve substitutes, and promptly uses from body, allogeneic, heterogenous allosome or non-biological material and replaces the veins of lower extremity valve that has lost function.
Though the method for valve repair has obtained curative effect preferably, its operation indication is narrower, only be applicable to that valve itself is complete, and valve is lax or because the patient of valvular insufficiency appears in the chap of vein caliber.For those after owing to venous thrombosis logical again cause vein valve structural deterioration or dark vein valve to lack as the patient then inapplicable.
The alternate method of valve is exactly that the valve of pathological changes is replaced with the valve of better function, therefore can be used for the treatment of all veins of lower extremity valve disease in theory.But need excise the pathological changes vein segment when substituting owing to present valve, the promoting the circulation of blood pipe of going forward side by side coincide, and operation wound is big, and to contiguous vein segment interference greatly, so postoperative complication is many.And autogenous vein valve searching difficulty, need increase operation wound when cutting, there are antigen-reactive in allosome and xenogenesis vein valve, so the actual therapeutic effect is relatively poor.
Summary of the invention
The present invention adopts a kind of leg type lower limb artificial vein valve directly to insert veins of lower extremity valve diseased region can reach therapeutic purposes.
Leg type lower limb artificial vein valve of the present invention is had the artificial vein of bilobed flap film and is attached to the artificial vein outer wall by inwall the passive metal rack of artificial vein is formed.
Description of drawings
Fig. 1 is artificial vein valve sectional structure sketch map;
Fig. 2 is the metal rack structural representation;
Fig. 3 is a leg type lower limb artificial vein valve outward appearance front view of the present invention.
The specific embodiment
See Fig. 1, the artificial vein valve is made up of artificial vein 1 and two valves 2 that are attached to the artificial vein inwall, artificial vein 1 and valve 2 are all used by the ultrathin polytetrafluoroethylmaterial material of Shanghai plastic institute development and are made, and connection is each other used medical thin silk thread and sewed up.See Fig. 2, metal rack 4 is pressed by the stainless steel silk of Shanghai Steel and Iron Research Institute's development and is surrounded three circles after " Z " type folds, and connects into hollow cylinder with stainless steel silk 3 between three circle " Z " type supports.See Fig. 3, metal rack 4 is placed in the outer wall of artificial vein 1, and its diameter and artificial vein diameter are complementary, with medical thin silk thread sutured.Leg type lower limb artificial vein valve external diameter and length are decided according to corresponding vein internal diameter of patient's vein valve diseased region and length, and external diameter is 6~12mm usually, and length is generally 30~40mm.
Using method is as follows: according to the position and the corresponding vein internal diameter of pathological changes veins of lower extremity valve, select suitable leg type lower limb artificial vein valve.To fill in the lead sheath of pusher commonly used clinically after the leg type lower limb artificial vein valve compression, it is standby to sterilize.During operation, by pusher intravascular of the present invention is delivered to the veins of lower extremity diseased region, discharge leg type lower limb artificial vein valve again, it opens by metal rack elastic force and is fixed in the pathological changes intravenous, and the veins of lower extremity blood flow recovers the proper flow direction under the effect of this artificial venous valve.
The present invention treats lower limb artificial vein valve disease by leg type lower limb artificial vein valve is inserted in venipuncture in lumen of vessels method, has avoided the loaded down with trivial details operation wound that also reduced of venous anastomosis and operation.Adopt in the artificial vein and adhere to the bilobed flap structure, press bionics principle fully, copy the normal venous valve structure of human body, make venous valve opening and closure freely.Use the design of support jacket-type, can strut artificial vein, make blood flow unobstructed, support has kept the slickness of vein inwall, in addition at the artificial vein outer wall simultaneously, there is phlebostenosis simultaneously in part lower limb disease patient, and support then can play the narrow venous effect of expansion.The material aspect, the artificial vein valve adopts ultrathin polytetrafluoroethylmaterial material, and histocompatibility is good, and smooth surface is difficult for forming thrombosis, has better elastic and intensity, is the ideal material of artificial vein valve.Support adopts stainless steel material, and histocompatibility is good, and intensity and elasticity are good, and cost is cheaper.
Claims (2)
1. leg type lower limb artificial vein valve is characterized in that being had the artificial vein (1) of artificial valve (2) and being attached to artificial vein (1) outer wall by inwall the passive metal rack of artificial vein (4) is formed.
2. by the described leg type lower limb artificial vein valve of claim 1, it is characterized in that described metal rack (4) connects into hollow cylinder by 3 metal wire rings that are folded into " Z " type by stainless steel silk (3) and forms, the internal diameter of hollow cylinder metal rack and the external diameter of artificial vein are complementary.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 01126981 CN1197531C (en) | 2001-10-09 | 2001-10-09 | Leg type lower limb artificial vein valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN 01126981 CN1197531C (en) | 2001-10-09 | 2001-10-09 | Leg type lower limb artificial vein valve |
Publications (2)
Publication Number | Publication Date |
---|---|
CN1410035A CN1410035A (en) | 2003-04-16 |
CN1197531C true CN1197531C (en) | 2005-04-20 |
Family
ID=4666983
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN 01126981 Expired - Fee Related CN1197531C (en) | 2001-10-09 | 2001-10-09 | Leg type lower limb artificial vein valve |
Country Status (1)
Country | Link |
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CN (1) | CN1197531C (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101444441B (en) * | 2008-12-31 | 2011-06-29 | 南京医科大学第一附属医院 | Support type artificial venous blood vessel with valve |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN103705274B (en) * | 2013-12-20 | 2017-03-29 | 先健科技(深圳)有限公司 | Plugging device |
CN104161604B (en) * | 2014-08-06 | 2016-08-24 | 中国人民解放军第二军医大学 | A kind of split type multilamellar tremulous pulse bare bracket |
CN110811944A (en) * | 2019-12-13 | 2020-02-21 | 东华大学 | Support system with super smooth surface of imitative pitcher plant |
-
2001
- 2001-10-09 CN CN 01126981 patent/CN1197531C/en not_active Expired - Fee Related
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101444441B (en) * | 2008-12-31 | 2011-06-29 | 南京医科大学第一附属医院 | Support type artificial venous blood vessel with valve |
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Publication number | Publication date |
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CN1410035A (en) | 2003-04-16 |
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