Huels Aktiengesellschaft

Retina Implant Ag

Hugo Haemmerle

Wilfried Nisch

Fritz Schindler

Lutz Scheideler

Martin Stelzle

Alfred Stett

Eberhart Zrenner

Frank Hill, Deceased

Heinz-Gerhard Graf

Heiner Weber

Bernd Hoefflinger

Guenter Hoff

Alexander Dollberg

Bernhard Kneissel

Otto Inacker

Eva Maria Engel

An active retina implant has a multiplicity of pixel elements that convert incident light into electric stimulation signals for cells of the retina with which stimulation electrodes are to make contact. Each pixel element is provided with at least one image cell that converts incident light into electric signals, there being provided at least one amplifier whose input is connected to the image cell and whose output is connected to at least one stimulation electrode to which it supplies a stimulation signal. Also provided is an energy supply which provides externally coupled external energy as supply voltage for the image cells and the amplifiers. The image cell has a logarithmic characteristic according to which incident light of specific intensity is converted into electric signals of specific amplitude. The stimulation signal is supplied in the form of analog voltage pulses of specific pulse length and pulse spacings, the pulse amplitude being a function of the intensity of the incident light.

Active retina implant with a multiplicity of pixel elements

A transcutaneous medical device which has on its surface a fibrous material with free collagen fibers which are present in a natural structure. The transcutaneous medical device is prepared by applying to the surface of such a device a fibrous material with free collagen fibers present in a natural structure.

Medical device for improving skin fixation of indwelling catheters and

A dental implant coated with a composition containing desmodontal cells, where the cells are not propagated in vitro prior to being coated on the implant.

Biohybrid dental implant

A biocompatible composite material and a method for its production are provided, wherein the composite material is made of a plastic matrix having a felt of collagen fibers contained therein, wherein the collagen fibers project out of a surface of the composite material, wherein the composite material is produced by a process involving:

Biocompatible composite material and process for its production

Growing community of inventors

Tuebingen, Germany

Hugo Haemmerle