Leg type lower limb artificial vein valve

A venous valve and stent-type technology, applied in the field of medical devices, can solve problems such as difficulty in finding an autogenous venous valve, many complications, and increased surgical trauma

Inactive Publication Date: 2003-04-16
SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the need to resect the diseased vein segment and perform vascular anastomosis when replacing the valve, the surgical trauma is large and the interference to the adjacent vein segment is large, so there are many complicati

Method used

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  • Leg type lower limb artificial vein valve
  • Leg type lower limb artificial vein valve
  • Leg type lower limb artificial vein valve

Examples

Experimental program
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Embodiment Construction

[0011] See figure 1 , the artificial vein valve consists of an artificial vein 1 and two valves 2 attached to the inner wall of the artificial vein. Both the artificial vein 1 and the valve 2 are made of ultra-thin polytetrafluoroethylene material developed by the Shanghai Institute of Plastics. The connection should be sutured with medical fine silk thread. See figure 2 , the metal support 4 is folded into three circles by the stainless steel wire developed by Shanghai Iron and Steel Research Institute according to the "Z" shape, and the three circles of "Z" shape brackets are connected with stainless steel wire 3 to form a hollow cylinder. See image 3 , the metal stent 4 is sleeved on the outer wall of the artificial vein 1, its diameter matches the diameter of the artificial vein, and is fixed by suturing with medical fine silk thread. The outer diameter and length of the stent-type lower limb artificial venous valve are determined according to the inner diameter and l...

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Abstract

An artificial scaffold-type venous valve for treating the revese flow phlebocholosis of lower extremity and phlebostenosis is composed of the artificial vein with the said artificial valve on its inner surface and the metallic scaffold attached to outer surface of artificial vein. Its advantages are high tissue compatibility, and low cost.

Description

technical field [0001] The invention relates to the technical field of medical devices, and relates to a stent-type lower limb artificial venous valve for treating lower limb reflux phlebopathy. Background technique [0002] Lower extremity reflux phlebopathy is a common disease at home and abroad, and the prevalence rate of people over 15 years old in China can reach 8.4%. The primary factor of the disease is the structural destruction and insufficiency of the venous valves of the lower extremities. The function of normal lower extremity venous valves is that when the human leg muscles contract or the lower limbs are raised, the lower extremity venous valves open and the venous blood returns to the heart. Distal reflux. However, if the structure of the venous valves of the lower extremities is damaged and the function is incomplete, there will be abnormal backflow of venous blood in the lower extremities, causing venous hypertension in the distal ex...

Claims

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Application Information

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IPC IPC(8): A61B17/00A61F2/02A61M29/00
Inventor 陆清声景在平
Owner SECOND MILITARY MEDICAL UNIV OF THE PEOPLES LIBERATION ARMY
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