[Technical safety requirements of equipment for extracorporeal lithotripsy].
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Equipment Failure↗
Biomedical subjects
C Pinkwart
Publications and source records attributed to C Pinkwart.
Miniature three-function transmitting system for single neuron recording, wireless brain stimulation and marking.
A telemetric micro-transmitting system has been developed for extracellular single unit recording, electrical brain stimulation and marking of the recording and stimulation site in small freely moving animals. The action potentials are transmitted by using frequency modulation for distances up to 10 m. Electrical brain stimulation through the recording electrodes is performed by means of an inductively powered circuit which is combined with the transmitter (mass of the system 2.38 g). Biphasic current pulses can be applied. Pulse frequency and duration are wireless remotely controlled. The recording and stimulation site in the brain can be marked by means of iron deposits.
Animals↗
[A new method to estimate blood alcohol concentration from the breath of unconscious subjects (author's transl)].
The method of rebreathing and its particular importance to the estimation of blood alcohol concentration (BAC) are described. A face mask with an accompanying valve chamber to which a collection bag was attached proved to meet the requirements arising from the physiological exchange processes in rebreathed air. Practical tests in the laboratory revealed excellent agreement between the values obtained by direct measurements of breath alcohol by means of an IR-Spectrophotometer and those from stored samples. The application of the method described is of particular importance in cases of unconscious and benumbed patients, of sleeping and uncooperative patients and those with collapsed veins suspected of heavy alcohol intoxication. It has been proven to be an essential aid in differential diagnosis since it allows instantaneous determination and continuous monitoring of the BAC-level which aids in the observation of the reduction of this level. This was demonstrated in practice with 9 patients at the alcohol emergency clinic in Mainz on the carnival "Rosenmontag".
Alcoholic Intoxication↗