Sewing Ring for a Prosthetic Tissue Valve
OwnerRobert G. Mathenyinventor
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Abstract
The invention provides a trileaflet semi-lunar prosthetic tissue valve for aortic, pulmonary, mitral, or tricuspid valve replacement. The valve is planar before attachment at an annulus of a valvular lumen, and non-planar upon attachment at the annulus of the defective valve. A sewing ring having a circumference greater than the annular circumference of annulus of the valve being replaced is also described and the sewing ring is placed at the approximate position of the annulus of the defective valve in a non-planar configuration.
Claims20
A sewing ring for attaching a prosthetic valve for controlling fluid flow in a lumen, the lumen having an annulus,
- The sewing ring having a circumference a defined distance greater than a circumference of the annulus, so that upon placement of the sewing ring at the annulus, the attached prosthetic valve is not planar within the lumen.
A sewing ring for leaflets of a valve for controlling fluid flow in a lumen having an annulus comprising:
- a ring of reinforced extracellular matrix in a multilaminate or rolled configuration, the ring being larger than a circumference of the annulus, by a ratio of at least greater than 1,
- the leaflets attachable to the sewing ring prior to placement of the ring at the annulus, and
- the sewing ring essentially planar prior to placement at the annulus,
- and no longer planar after placement at the annulus.
A method of replacing a defective valve for controlling fluid flow in a lumen having an annulus, the method comprising:
- providing a sewing ring having a circumference larger than a circumference of the annulus, attaching a prosthetic valve to the sewing ring, and attaching the sewing ring to the annulus, wherein the valve is planar before attachment at the annulus, and attaching the sewing ring at the annulus at non-planar attachment points on the annulus.
Dependencies are inferred from the claim text.