(19)
(11) EP 0 409 508 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
27.03.1991 Bulletin 1991/13

(43) Date of publication A2:
23.01.1991 Bulletin 1991/04

(21) Application number: 90307712.1

(22) Date of filing: 13.07.1990
(51) International Patent Classification (IPC)5: F16B 13/08, A61F 6/14, A61D 19/00
(84) Designated Contracting States:
AT BE DE ES FR GB IT NL

(30) Priority: 21.07.1989 NZ 230023

(71) Applicant: CARTER HOLT HARVEY PLASTIC PRODUCTS GROUP LIMITED
Hamilton 2001 (NZ)

(72) Inventors:
  • Pryor, Raymond John, c/o Carter Holt Harvey
    Hamilton (NZ)
  • Pharaoh, James Frederick, c/o Carter Holt Harvey
    Hamilton (NZ)

(74) Representative: Brown, John David et al
FORRESTER & BOEHMERT Franz-Joseph-Strasse 38
80801 München
80801 München (DE)


(56) References cited: : 
   
       


    (54) Retention device for removable retention in a passage or cavity


    (57) A retention device which can be removably retained in a body cavity or passage has branch members which are movably connected to each other such that two relative configurations may be obtained. In one configuration the branch members are nested inside one another for inserting the retention device in a cavity. Once in a cavity an operating member is used to displace the branch members to form the second configuration, being a diamond configuration in which parts of the branch members are resiliently expanded to bear against the walls of the cavity and retain the device.







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