Venous one-way valve

Venous one-way valves are anatomical structures found within many veins—especially those in the limbs—that consist of two flaps (cusps or leaflets) with edges that meet. These flaps open when blood flows toward the heart and close if gravity or muscle contractions attempt to pull blood backward, thus preventing retrograde flow. This mechanism is essential for efficient return of deoxygenated blood from peripheral tissues back to the heart against gravity. In some medical contexts, mechanical prosthetic valves are used to restore this function when native valves fail; these devices mimic natural one-way action using engineered materials and designs such as caged-ball, tilting-disc, or bileaflet mechanisms[1][2][4]. **Note:** This entry is not a molecular target such as a receptor, enzyme, transporter, etc., but rather an anatomical/structural feature (or its mechanical replacement). It does not fit standard drug-target conventions; therefore "is_target" is set to false and "is_incorrect" is true for use as a canonical molecular target.

Other names

Venous valveVein valveOne-way venous valveMechanical venous valve (prosthetic context)

Mechanical prevention of retrograde blood flow via leaflet closure[1][2]