Proportional pressure assist ventilation controlled by a diaphragm electromyographic signal

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EP 1 366 779 A8

(12)	CORRECTED EUROPEAN PATENT APPLICATION
	Note: Bibliography reflects the latest situation

(15)	Correction information:
	Corrected version no 1 (W1 A1)

(48)	Corrigendum issued on:
	27.09.2006 Bulletin 2006/39

(43)	Date of publication:
	03.12.2003 Bulletin 2003/49

(21)	Application number: 03102703.0

(22)	Date of filing: 04.06.1999

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International Patent Classification (IPC):

A61M 16/00^(1968.09)

A61B 5/0488^(1990.01)

(84)	Designated Contracting States:
	AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

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Priority:

04.06.1998 CA 2239673

(62)	Application number of the earlier application in accordance with Art. 76 EPC:
	99924617.6 / 1082158

(71)	Applicant: UNIVERSITE DE MONTREAL
	Montreal, Quebec H3C 3J7 (CA)

(72)	Inventors:
	SINDERBY, Christer Montreal, Quebec H1E 1Z9 (CA) BECK, Jennifer Montreal, Quebec H1E 1Z9 (CA)

(74)	Representative: Poulin, Gérard
	BREVALEX 3, rue du Docteur Lancereaux 75008 Paris 75008 Paris (FR)


	Remarks:
	This application was filed on 04 - 09 - 2003 as a divisional application to the application mentioned under INID code 62.

(54)	Proportional pressure assist ventilation controlled by a diaphragm electromyographic signal

(57) A closed loop system uses (a) the intensity of the diaphragm electromyogram (EMG) for a given inspiratory volum ; (b) the inspiratory volume for a given EMG intensity ; or (c) a combination of (a) and (b) ; in view of controlling the level of gas flow, gas volume or gas pressure delivered by a mechanical (lung) ventilator. The closed loop ventilator system enables for automatic or manual adjustment of the level of inspiratory support in proportion to changes in the neuro-ventilatory efficiency such that the neural drive remains stable at a desired target level. An alarm can also be used to detect changes in neuro-ventilatory efficiency in view of performing manual adjustments.