(19)
(11) EP 0 373 153 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
26.09.1990 Bulletin 1990/39

(43) Date of publication A2:
13.06.1990 Bulletin 1990/24

(21) Application number: 90101880.4

(22) Date of filing: 03.02.1987
(51) International Patent Classification (IPC)5: A61H 31/02, A61M 16/20
(84) Designated Contracting States:
AT BE CH DE FR GB IT LI LU NL SE

(30) Priority: 04.02.1986 GB 8602646
25.07.1986 GB 8618254

(62) Application number of the earlier application in accordance with Art. 76 EPC:
87901084.1 / 0258302

(71) Applicant: Dranez Anstalt
FL-9490 Vaduz (LI)

(72) Inventor:
  • Hayek, Zamir
    Herzlia (IL)

(74) Representative: Smart, Peter John et al
W.H. BECK, GREENER & CO 7 Stone Buildings Lincoln's Inn
London WC2A 3SZ
London WC2A 3SZ (GB)


(56) References cited: : 
   
     
    Remarks:
    This application was filed on 31 - 01 - 1990 as a divisional application to the application mentioned under INID code 60.
     


    (54) Ventilator apparatus


    (57) Ventilator apparatus for treating a patient has a ventilator enclosure to which oscillating air flow is controlled via a valve connected to the enclosure and to sources of positive and negative pressure. The valve (A) comprises a main chamber (812) separated via a valve seat and a shutter member (810) from subsidiary chambers (816, 817) which are isolated from one another. Rotation of the shutter member by a stepper motor (B) connects each subsidiary chamber to the main chamber in turn to produce oscillating gas flow through a main port (812a) connected to the enclosure.







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