Bifurcated biological pulmonary valved conduit
First Claim
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1. A vascular prosthetic comprising:
- at least two chemically fixed biological tissue valvular conduits, each of said conduits having an angular sectioned inflow end and an outflow end and a valve of chemically fixed biological tissue housed therein;
an inflow conduit having a large diameter cross-sectional area and a smooth inner lumen;
a seam, the seam comprising a plurality of single pass stitches, the seam on the angular sectioned inflow ends to attach the inflow ends to each other to define the inflow conduit, the smooth inner lumen oriented at an angle of less than 30 degrees to each of the at least two valvular conduit outflow ends, the inflow conduit positioned upstream of each of said valves.
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Abstract
The present invention comprises a pulmonary valved conduit that permits inflow diameters greater than about 22 mm while still maintaining the advantages of a naturally-formed biological valved conduit. Specifically, the present invention comprises a valved vascular prosthetic having an inflow conduit comprising a manifold formed from the sealed attachment of at least two venous valvular conduits.
92 Citations
42 Claims
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1. A vascular prosthetic comprising:
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at least two chemically fixed biological tissue valvular conduits, each of said conduits having an angular sectioned inflow end and an outflow end and a valve of chemically fixed biological tissue housed therein; an inflow conduit having a large diameter cross-sectional area and a smooth inner lumen; a seam, the seam comprising a plurality of single pass stitches, the seam on the angular sectioned inflow ends to attach the inflow ends to each other to define the inflow conduit, the smooth inner lumen oriented at an angle of less than 30 degrees to each of the at least two valvular conduit outflow ends, the inflow conduit positioned upstream of each of said valves. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A vascular prosthetic comprising:
a “
Y”
shaped conduit of fixed biological tissue having a large diameter inflow conduit, a bifurcated outflow conduit comprising two valvular conduit outflow ends and an integral valve disposed in each valvular conduit outflow ends, the pulmonary valved conduit formed from chemically fixed biological tissue, wherein each of said valvular conduits ends is joined at a seam forming the inflow conduit, the seam including a plurality of stitches forming a smooth inner lumen along the large diameter inflow conduit, the smooth inner lumen in fluid communication across the integral valves with the flow path in the valvular conduit outflow ends at an angle of −
transition less than 15 degrees from said inflow conduit to either of the valvular conduit outflow ends, the large diameter inflow conduit with a cross-sectional area larger than the cross-sectional area of either of the two valvular conduit outflow ends forming the “
Y”
shape.- View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A vascular prosthetic comprising:
an inflow conduit comprising a manifold formed from the attachment of two donor valved blood vessels, the attachment including a plurality of stitches forming a smooth inner lumen, each of said two blood vessels housing a biological valve integral therewith, each blood vessel configured to permit the flow of blood therethrough by the valve opening at a relatively low pressure and configured to prevent the backflow of blood therethrough by the valve closing so as to withstand relatively high pressures, said manifold formed at an angle of transition of the blood flow therethrough that is less than 30 degrees upstream of the biological valves so as not to interfere with the effective operation of the biological valves, the inflow conduit with a cross-sectional area larger than the cross-sectional area of either of the inflow ends of each of the donor blood vessels, and an outflow conduit positioned downstream of each of the biological valves. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33)
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34. A vascular prosthetic comprising:
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two chemically fixed biological tissue valvular conduits, each of said conduits having an angular sectioned inflow end and an outflow end and a valve of chemically fixed biological tissue housed therein, each of said conduits comprising the jugular vein of a donor quadruped or marsupial; wherein each of said conduits is joined at the angular sectioned inflow ends by stitches to form a single inflow end having a smooth inner lumen with a single inflow end cross-sectional area larger than the cross-sectional area of any of the inflow ends of said valvular conduits, the joinder providing an angle of transition of the blood flow through the single inflow end and into the outflow ends that is less than 30 degrees. - View Dependent Claims (35, 36, 37, 38, 39, 40, 41, 42)
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Specification