Medical diagnostic device for determining bleeding times and behavior of bleedings from a standardized wound

US4210153A · kind A · utility

Assignee

• Hellige GmbH · DE

Inventors

• Robert Fehlau · Glückstadt, DE
• Peter Schlussel · Glückstadt, DE
• Matthias Schneider · Dossenheim, DE

Key dates

• Filing date: Feb 12, 1979
• Grant date: Jul 1, 1980
• Expiry date: Feb 12, 1999

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/3673
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

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 …