TUTCRIS - Tampereen teknillinen yliopisto


A method and apparatus based on combination of three phsysiological parameters for assessment of analgesia during anesthesia or sedation

Tutkimustuotos: Patentti


IPCA61B 5/ 11 A I
Prioriteetti päiväys7/07/03
TilaJulkaistu - 12 tammikuuta 2005
Julkaistu ulkoisestiKyllä
OKM-julkaisutyyppiH1 Myönnetty patentti


The invention relates to a method for monitoring a condition of a patient under anesthesia or sedation, whereupon one, two, three or more signals are acquired, and the signal(s) represent(s) cardiovascular and/or combined electrical biopotential on skull activity of the patient. From said signal or signals are derived or calculated at least two parameter values related to a quantity like waveform amplitude, waveform periodicity, waveform morphology, waveform variability, energy, power, signal complexity and frequency content. A predetermined mathematical index for probability of patient comfort is used, in which function said parameters are variables, and successively changing probability index values of said mathematical index is calculated.