Tissue heart valve and stent

Details Tissue heart valve and stent Tissue heart valve and stent

1981-12-03

1984-04-10

Frinks, Ronald L.

A61F 122

Patent

active

044412169

ABSTRACT:
An improved stent for prosthetic tissue heart valves having upright legs which have radiused upper tips which are approximately one-half the width of prior art stent legs is disclosed. 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 leg. 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.degree. 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.

REFERENCES:
patent: 3197788 (1965-08-01), Segger
patent: 3739402 (1973-06-01), Cooley et al.
patent: 4084268 (1978-04-01), Ionescu et al.
patent: 4172295 (1979-10-01), Batten
patent: 4259753 (1981-04-01), Liotta
patent: 4291420 (1981-09-01), Reul
patent: 4340977 (1982-07-01), Brownlee et al.
patent: 4345340 (1982-08-01), Rosen
patent: 4388735 (1983-06-01), Ionescu et al.
"Heart Valve Replacement with Autologous Fascialata" by M. I. Ionescu et al., The Journal of Thoracic & Cardiovascular Surgery, vol. 60, No. 3, Sep. 1970, pp. 331-354.
"Frame-Mounted Tissue Heart Valves: Technique of Construction" by I. T. Bartek et al., Thorax, (1974), 29, 51, pp. 51-55.

Affiliated with

Also associated with

Rating

Tissue heart valve and stent does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Tissue heart valve and stent, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Tissue heart valve and stent will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-885993