A - Human Necessities – 61 – F
Patent
A - Human Necessities
61
F
3/118
A61F 2/22 (1985.01)
Patent
CA 1184703
LOW PROFILE PROSTHETIC XENOGRAFT HEART VALVE Abstract Prosthetic heart valves having a low profile are disclosed which comprise an annular, right cylindrical, metal stent covered with fabric around which a glutaraldehyde-stabilized pericardial valving element is attached. The valving element is formed of three leaflets, each having a plateau on a truncated triangle extending higher at the center than at the edges, and formed as a cylinder having a diameter substantially equal to the diameter of the stent. In a preferred embodiment of the invention, the stent has upright legs which have radiused upper tips which are approxi- mately one-half the width of prior art stent legs. These narrow tipped stent legs reduce stress induced in the leaflets by curvature of the leaflets around the tips of the stent legs in the closed position, extending the service life of the valve. Tabs are added to the tips of the stent legs to add structural strength. These tabs can be tapered or straight but their bottom portions must be narrower than the stent legs. The tabs have a plurality of holes in them through which coaptation stitches are passed. The coaptation stitch can be two separate stitches, one in a first plane and one in a second plane at 90° to the first plane, or, in the preferred embodiment, a single figure eight stitch passing through the holes in the tab in a plane coincident with the long axis of the stent leg.
389187
Ionescu Marian I.
Lenker Jay A.
Rosenbluth Robert F.
Shiley Incorporated
Smart & Biggar
LandOfFree
Low profile prosthetic xenograft heart valve does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Low profile prosthetic xenograft heart valve, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Low profile prosthetic xenograft heart valve will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1176686