Derek Christopher Pfeffer

US Patent:

20110075871, Mar 31, 2011

Filed:

Sep 30, 2010

Appl. No.:

12/895012

Inventors:

Robert J. Fretz - Maplewood MN, US
Derek Pfeffer - Robbinsdale MN, US

Assignee:

INTRICON CORPORATION - Arden Hills MN

International Classification:

H04R 25/00
H05K 13/00
B23P 19/00

US Classification:

381321, 295921, 29428

Abstract:

A hearing aid has a suspension portion received in the wearer's concha bowl and an electronics portion. The suspension portion is formed of a flexible rubbery material, while the electronics portion includes a shell formed of a rigid plastic material. The suspension portion is provided as a ring having an annulus, and bears off a tragus contact area, an antitragus contact area and an antihelix contact area to support the receiver in a suspended, cantilevered position within the ear canal. The microphone can be within the flexible ring housing portion. The hearing aid makes much more comfortable contact with the concha bowl.

US Patent:

20150119709, Apr 30, 2015

Filed:

Oct 24, 2014

Appl. No.:

14/523545

Inventors:

- Eden Prairie MN, US
Derek Pfeffer - Plymouth MN, US
Mattie L. Goldberger - Crystal MN, US

International Classification:

A61M 5/00
A61M 5/20

US Classification:

600432

Abstract:

A powered medical fluid injector may have a disposable medical fluid injection manifold that controls fluid routing between the injector and a patient line and also controls fluid flow to a pressure sensor contained within the manifold. In one example, the medical fluid injection manifold includes a manifold housing having at least two inlets for different pressurized medical fluids and at least two corresponding outlets. The medical fluid injection manifold may also have a pressure sensor configured to measure a hemodynamic pressure of a patient. The pressure sensor may be positioned within the manifold housing and in selective fluid communication with the one of the outlet ports of the manifold housing.