Indirect artificial valva outside vein

Abstract

The invention discloses an extravenous indirect artificial valve. The upper body of the valve and the lower body of the valve are connected by the valve shafts on both sides; the opposite ends of the upper body of the valve and the lower body of the valve are respectively provided with pressure points at the distal end of the blood vessel wall and pressure points at the proximal end of the blood vessel wall. Distal contact, the pressure point at the proximal end of the blood vessel wall can be in contact with the proximal end of the vein; the pressure points at the proximal end of the blood vessel wall of the upper valve body and the lower valve body are all fixed with fixed sutures to fix the upper valve body, the lower valve body, and the vein wall. When the blood flow flows from the proximal end of the vein to the distal end of the vein, it can close the compression point at the distal end of the vessel wall; when the blood flow flows from the distal end of the vein to the proximal end of the vein, the pressure point at the distal end of the energy vessel wall can be washed away . The invention can maintain the selective one-way flow of blood in the vein and has the function of a physiological valve; moreover, the device is placed outside the vessel wall to maintain the integrity of the vessel intima and reduce the possible risk of intravascular thrombosis after surgery.

Description

technical field [0001] The invention relates to a medical device, in particular to an extravenous indirect artificial valve for treating deep venous insufficiency of lower limbs. Background technique [0002] In the blood circulation of the whole body of the human body, the return of blood from the lower limbs to the heart against gravity is an important part of the whole blood circulation. There are two main reasons why the blood of the lower limbs can resist gravity and return smoothly. One is that the muscles of the lower legs contract and relax alternately, acting as a muscle pump to squeeze the venous blood wrapped in the muscles to the heart; the other is that in the veins of the entire lower limbs, Generally, there is a venous valve every 10 to 20 centimeters to prevent the backflow of blood. However, due to other reasons such as congenital valvular poor structure, thrombus blockage or long-term standing weight bearing, valve closure is insufficient. This kind of dis...

AI Technical Summary

Problems solved by technology

However, due to other reasons such as congenital valvular poor structure, thrombus blockage or long-term standing weight bearing, valve closure is insufficient. This kind of disease is called deep venous insufficiency of the lower extremities. daily life and work

However, at present, surgery is the first choice for this type of disease, but various treatment methods have not yet achieved satisfactory results.

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