Process for measuring sensory qualities and apparatus therefor

Details Process for measuring sensory qualities and apparatus therefor Process for measuring sensory qualities and apparatus therefor

1986-01-15

1987-07-21

Howell, Kyle L.

Surgery

Truss

Pad

12820314, 12820325, A61M 1700

Patent

active

046811214

ABSTRACT:
An apparatus is disclosed for measuring sensory qualities, in particular for the measurement of analgesia in the monitoring of anaesthesia, in which substances in gas or vapor form which trigger the specific stimulus are passed in pulse form over the nasal mucosa by a stimulating device and electrical signals correlated with the stimulus are derived from the electro-encephalogram by means of a recording mechanism and analyzed as measured values, is to be improved with regard to the exclusion of interference values. According to the invention, this is achieved by causing the switching device to produce a continuous sequence of pulses and the assessment to be carried out by the assessment unit in an assessment window, the width of which corresponds with a predetermined number of stimulus pulses, it being possible to displace the assessment window over the number of stored signals. In addition, an advantageous process for the control of anaesthesia is described, which consists of a painful nasal stimulus being applied periodically and the response signals being derived from the EEG as measured or control quantities.

REFERENCES:
patent: 2208633 (1940-07-01), Heidbrink
patent: 3513834 (1970-05-01), Suzuki et al.
patent: 4127121 (1978-11-01), Westenskow et al.
patent: 4328823 (1982-05-01), Schreiber
patent: 4533346 (1985-08-01), Cosgrove, Jr. et al.
patent: 4576159 (1986-03-01), Hahn et al.

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