Hellige Gmbh

Peter F Schlussel

Georg J Ullrich

Robert Fehlau

Wilhelm A Hofert

Anton H Sutor

Matthias Schneider

Disclosed herein is a medical diagnostic device for determining bleeding times and behavior of bleedings from a standardized wound, (hemmorrhagometry), wherein a flow of a rinsing liquid past the wound is established, thereby to cause the rinsing liquid to contact the wound. A photometric instrument or equivalent is provided for determining a characteristic of the rinsing liquid which is representative of the proportion of blood contained in the rinsing liquid having contacted the wound. The device of the invention is designed such that it permits controlling the temperature of the rinsing liquid and consequently of the bleeding location and of its surrounding area, in order to keep them on a preselected temperature. Temperature control is suitably achieved by means of a thermo-electric device which includes a first heat exchanger for receiving the flow of the rinsing liquid therethrough, a second heat exchanger for receiving the flow of a second liquid therethrough, a Peltier element in thermal contact with the first and second heat exchangers, and circuitry operable as a closed-loop servo-system for controlling energization of the Peltier element as a function of the temperature of the rinsing liquid, thereby to maintain the rinsing liquid temperature at a substantially constant level.

Medical diagnostic device for determining bleeding times and behavior of

A spring lancet holder for creating accurate standardized, reproducible puncture wounds in the skin for medical diagnostic purposes is disclosed in which accuracy and reproducibility is improved by minimizing the recoil transmitted to the lancet holder by actuation of the drive mechanism which pushes the lancet into the skin. In a preferred embodiment, a mass is shown which is caused to move in opposition to the motion of the lancet caused by a striker spring which is mounted between the lancet and the mass.

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Freiburg, Germany

Peter F Schlussel