Prosthesis (i.e. – artificial body members) – parts thereof – or ai – Heart valve – Having rigid or semirigid pivoting occluder
Reexamination Certificate
1999-06-11
2001-02-06
Snow, Bruce (Department: 3738)
Prosthesis (i.e., artificial body members), parts thereof, or ai
Heart valve
Having rigid or semirigid pivoting occluder
Reexamination Certificate
active
06183510
ABSTRACT:
PRIOR APPLICATIONS
This application is a U.S. application which bases foreign priority on German patent application number 198 26 104.7, filed Jun. 12, 1998 (Jun. 12, 1998).
BACKGROUND OF THE INVENTION
1. Field of the Invention
The invention relates to a heart valve prosthesis to be used as a replacement for natural heart valves and which has a valve ring and at least one substantially elongated wing valve mounted on the valve ring and pivotable about an axis located in the valve ring plane.
2. Description of the Prior Art
DE 37 01 755 C1, U.S. Pat. Nos. 5,192,309, 4,328,592 and DE 196 33 346 C1 disclose in connection with heart valve prostheses to so construct the bearings of the wing valves that they are “thoroughly washed” by the bloodstream. In DE 37 01 755 C1 this takes place through special inflow and outflow funnels following the bearings, in U.S. Pat. Nos. 5,192,309 and 4,328,592 through longitudinal grooves on the inside of the valve ring. In DE 196 33 346 C1 journals projecting into elongated holes in the wing valves are provided.
WO 97 05 834 and U.S. Pat. No. 4,935,030 disclose slideways for the wing valves.
SUMMARY OF THE INVENTION
The problem of the invention is to provide a heart valve prosthesis, whose bearings, around all of whose areas flows blood, ensure a precise guidance of the heart valve.
The proposed bearing construction with a groove receiving the swivel pin permits a constant rinsing of all areas of the bearing by the bloodstream and in conjunction with the slide cams the guide pins ensure a forced guidance of the valve.
The invention may be best understood by those having ordinary skill in the art by reference to the following detailed description when considered in conjunction with the accompanying drawings in which:
REFERENCES:
patent: 4373216 (1983-02-01), Klawitter
patent: 4863459 (1989-09-01), Olin
patent: 4872875 (1989-10-01), Hwang
patent: 4935030 (1990-06-01), Alonso
Ebel Thomas
Otto Karl-Heinz
Wieland Manfred
Larson James E.
Larson & Larson P.A.
Snow Bruce
LandOfFree
Heart valve prosthesis does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Heart valve prosthesis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Heart valve prosthesis will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2599323