Title:
利得制御装置及び肺換気装置制御システム
Document Type and Number:
Japanese Patent JP4405702
Kind Code:
B2
Abstract:
A gain controller and method for controlling the value of a gain is used in conjunction with an electrode array for detecting a signal representative of respiratory drive output of a patient during inspiration, and a lung ventilator for assisting inspiration of the patient. The gain controller comprises an input for receiving the signal representative of respiratory drive output; a comparator for determining whether the signal representative of respiratory drive output is higher or lower than a target drive signal; and a gain adjustment unit for increasing the value of a gain when the amplitude of the signal representative of respiratory drive output is higher than the amplitude of the target drive signal and for decreasing the value of this gain when the amplitude of the signal representative of respiratory drive output is lower than the amplitude of the target drive signal. The gain is applied to the signal representative of respiratory drive output to produce an amplified respiratory drive output representative signal used for controlling the lung ventilator. The advantage of target drive ventilation is that this mode of ventilation does not depend on pressure, flow or volume measurements. A leaky ventilatory line will introduce a change in respiratory drive which will change the ventilatory assist in order to return the respiratory drive to its target level. Also, changes in the patient's metabolic or patho-physiological status which result in altered respiratory drive will be compensated.
Inventors:
Cinderby, christer
Application Number:
JP2001513464A
Publication Date:
January 27, 2010
Filing Date:
July 27, 2000
Export Citation:
Assignee:
UNIVERSITE DE MONTREAL
International Classes:
A61M16/00; A61N1/05
Domestic Patent References:
| JP11502755A |
Foreign References:
| WO1997016216A1 | ||||
| US5671752 | ||||
| US5820560 |
Attorney, Agent or Firm:
Takashi Ishida
Jun Tsuruta
Masaya Nishiyama
Higuchi Souji
Jun Tsuruta
Masaya Nishiyama
Higuchi Souji