David Warren Mcqueen, 6410 Hill St APT 21J, Newark, NJ 07102

2008002, Jan 24, 2008

Jul 7, 2006

11/483313

Peter Tulkis - Paramus NJ, US
Ryan James Laurent - Wayne NJ, US
David A. McQueen - Kechi KS, US

Howmedica Osteonics Corp. - Mahwah NJ

A61F 2/34

623 2235, 623 2238

A modular prosthetic acetabular cup for use in restorative hip replacement has an augment which can be attached to an acetabular cup outer shell to provide an acetabular cup with a cross section of a desired configuration. The augment can be attached to the acetabular cup by a coupling element having an outer dovetail portion which slidably engages a groove formed within the augment preferably open to at least a first end thereof. The inner end of the coupling element can engage screw holes of the acetabular cup. The groove of the augment further includes a second end having a gradually increasing distance from the outer surface of the shell and the inner surface of the augment on moving towards the second end of the augment.

5026391, Jun 25, 1991

Nov 14, 1989

7/434621

David M. McQueen - Chatham NJ
Charles S. Peskin - Hartsdale NY

A61F 224

623 2

An annular valve body having a central passageway for the flow of blood therethrough with two curved leaflets each of which is pivotally supported on an accentric positioned axis in the central passageway for moving between a closed position and an open position. The leaflets are curved in a plane normal to the eccentric axis and positioned with the convex side of the leaflets facing each other when the leaflets are in the open position. Various parameters such as the curvature of the leaflets, the location of the eccentric axis, and the maximum opening angle of the leaflets are optimized according to the following performance criteria: maximize the minimum peak velocity through the valve, maximize the net stroke volume, and minimize the mean forward pressure difference, thereby reducing thrombosis and improving the hemodynamic performance.