DAVID JEFFREY LEVENSON
Medical Practice in Pittsburgh, PA

7324019, Jan 29, 2008

Jan 3, 2001

10/169654

David J. Levenson - Pittsburgh PA, US

H03M 11/00

341 22, 400488, 400489, 400486, 345168

An ergonomic keyboard as shown in FIG. A for use with a stationary palm wherein the keys () of the keyboard are actuated only by motion of the joints in the digits. The keyboard may have a thumb region (), a palm rest region () and a hypothenar rest region which are discrete parts and are adjustable relative to one another along a longitudinal axis. Some keys may be actuated by the back surface of the digits. The keyboard may be on an upper portion () which is mounted on a base () such that three dimensional rotational adjustment is possible between the upper portion and base. The position of the keyboard relative to a user may be adjusted. The spacing of the keys on the keyboard may be spaced at different intervals and have different forces for actuation.

8496610, Jul 30, 2013

Jun 22, 2010

12/820603

David J. Levenson - Pittsburgh PA, US
John L. Moss - Monroeville PA, US

A61M 1/00

604 29, 4174772, 422 24

A device for administering a fluid includes a sterilization cassette having a shell, a fluid chamber, and an ultraviolet light transmitting window. An input tube directs fluid into the chamber. An ultraviolet light source is positioned to direct ultraviolet light through the window into the fluid chamber at an intensity sufficient to kill or render non-reproducible at least one species of a microorganism in the fluid while the fluid is in the chamber. An outlet tube receives fluid from the cassette and directs the fluid to a destination. The fluid is substantially uniformly exposed to the light while in the chamber. The cassette and light source are contained in a housing that prevents ultraviolet light from escaping the housing.