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US 2003/0171802 A1Published application
Venous valve and graft combination
OwnerJohn G. Wilder, Aleta Tesarinventors
Life of this patent
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Abstract
A synthetic venous valve and graft combination that exerts no radial force at the valve site is disclosed. The trilobed valve (11) is passively actuated by venous blood pressure changes. When open, the aperture for blood flow is approximately that of the original vein. The prosthesis is useful for replacing nonfunctioning venous valves in the human vasculature.
Claims3
A prosthetic venous valve and graft combination comprising:
- a. a short tube within a tube, the short tube secured to the outer tube in a line along the circumference that forms three equivalent and approximately parabolic sections, each section forming a lobe of a trilobal valve, whereby the three lobes lie flush against said outer tube with full lumenal aperture during distally higher pressure and closing the vein lumen to blood reflux at proximally higher pressure, passively actuated by venous blood pressure change and vein wall pulsation, and
- b. said short tube and said outer tube both formed of a compliant synthetic material.
Dependencies are inferred from the claim text.