Methods of assembling a valved aortic conduit
First Claim
Patent Images
1. A method of assembling a valved conduit, comprising:
- forming a subassembly of a fabric conduit graft and an annular sewing ring, the conduit graft comprising a longitudinal tubular portion between an upper end and a lower end, the lower end having a collar portion, the sewing ring comprising an inner core and an outer fabric covering, the step of forming comprising positioning the sewing ring adjacent the lower end of the conduit graft so that the collar portion contacts an inner wall of the annular sewing ring and securing the collar portion thereto;
leak testing the subassembly of the conduit graft and sewing ring;
providing a prosthetic heart valve having an inner support frame covered with fabric and defining a flow orifice and a plurality of leaflets extending inward from the support frame to ensure one-way blood flow through the heart valve, the fabric covering the support frame extending downward in a tubular segment;
attaching a holder to the heart valve; and
positioning the heart valve within the lower end of the leak tested subassembly of the conduit graft and sewing ring and folding the tubular segment of the fabric covering radially outward underneath the subassembly and secured the tubular segment thereto with sutures, the holder having a length sufficient to extend from the heart valve out of the upper end of the conduit graft.
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Accused Products
Abstract
A valved conduit including a bioprosthetic aortic heart valve connected to a tubular conduit graft forming an ascending aorta. The conduit graft may attach to the heart valve in a manner that facilitates a redo operation in which the valve is replaced with another valve. A sewing ring may be pre-attached to the inflow end of the graft, and then the valve connected to a delivery holder advanced into the graft and secured to the sewing ring. Dry bioprosthetic valves coupled with conduit grafts sealed with a bioresorbable medium can be stored with the delivery holder.
344 Citations
18 Claims
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1. A method of assembling a valved conduit, comprising:
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forming a subassembly of a fabric conduit graft and an annular sewing ring, the conduit graft comprising a longitudinal tubular portion between an upper end and a lower end, the lower end having a collar portion, the sewing ring comprising an inner core and an outer fabric covering, the step of forming comprising positioning the sewing ring adjacent the lower end of the conduit graft so that the collar portion contacts an inner wall of the annular sewing ring and securing the collar portion thereto; leak testing the subassembly of the conduit graft and sewing ring; providing a prosthetic heart valve having an inner support frame covered with fabric and defining a flow orifice and a plurality of leaflets extending inward from the support frame to ensure one-way blood flow through the heart valve, the fabric covering the support frame extending downward in a tubular segment; attaching a holder to the heart valve; and positioning the heart valve within the lower end of the leak tested subassembly of the conduit graft and sewing ring and folding the tubular segment of the fabric covering radially outward underneath the subassembly and secured the tubular segment thereto with sutures, the holder having a length sufficient to extend from the heart valve out of the upper end of the conduit graft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of assembling a valved conduit, comprising:
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forming a subassembly of a fabric conduit graft and an annular sewing ring, the conduit graft comprising a longitudinal tubular portion between an upper end and a lower end, the lower end having a collar portion, the sewing ring comprising an inner core and an outer fabric covering, the step of forming comprising positioning the sewing ring adjacent the lower end of the conduit graft so that the collar portion contacts an inner wall of the annular sewing ring and securing the collar portion thereto; leak testing the subassembly of the conduit graft and sewing ring; providing a prosthetic heart valve having an annular support frame covered with fabric but without a sewing ring attached thereto and flow-occluding leaflets mounted within the support frame; positioning the prosthetic heart valve within the lower end of the leak tested subassembly of the conduit graft and sewing ring, with the annular support frame adjacent to and in contact with the inner wall of the annular sewing ring; and securing the prosthetic heart valve within the lower end with sutures between the fabric covering the annular support frame and the annular sewing ring. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A method of assembling a valved conduit, comprising:
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forming a subassembly of a fabric conduit graft and an annular sewing ring, the conduit graft comprising a longitudinal tubular portion between an upper end and a lower end, the lower end having a collar portion, the sewing ring comprising an inner core and an outer fabric covering, the step of forming comprising positioning the sewing ring adjacent the lower end of the conduit graft so that the collar portion contacts an inner wall of the annular sewing ring and securing the collar portion thereto; leak testing the subassembly of the conduit graft and sewing ring; providing a prosthetic heart valve having an annular support frame covered with fabric but without a sewing ring attached thereto and flow-occluding leaflets mounted within the support frame; positioning the prosthetic heart valve within the lower end of the leak tested subassembly of the conduit graft and sewing ring, with the annular support frame adjacent to and in contact with the inner wall of the annular sewing ring; and securing the prosthetic heart valve within the lower end with sutures between the fabric covering the annular support frame and the annular sewing ring, wherein the prosthetic heart valve has a fabric covering a support frame that extends downward in a tubular segment, and the step of securing the prosthetic heart valve includes folding the tubular segment of the fabric covering radially outward underneath the subassembly and secured the tubular segment thereto with sutures.
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Specification