Method of and remote control apparatus for remotely controlling a medical appliance

US4211998A · kind A · utility

Assignee

• Stierlen-Maquet AG · DE

Inventors

• Klaus M. Junginger · Rastatt, DE
• Hermann Kieferle · Gaggenau, DE

Key dates

• Filing date: Aug 23, 1978
• Grant date: Jul 8, 1980
• Expiry date: Aug 23, 1998

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61G2203/12
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

In a method of remotely controlling a medical appliance frequency signal impulses and group frequency impulses are transmitted alternately from a transmitter to a receiver. In order to improve freedom from interference, the group frequency impulses are amplified in the transmitter and/or receiver by at least 3 dB less than the frequency signal impulses corresponding to command signals. For the same purpose, in a remote control arrangement for performing the method, the amplifier provided in the receiver exhibits at the group frequency a gain factor lower by at least 3 dB than at the frequencies of the frequency signal impulses.