Global Patent Index - EP 0953122 A1

EP 0953122 A1 19991103 - COILED STRIP SPRING AND ITS APPLICATION IN AN INJECTION DEVICE

Title (en)

COILED STRIP SPRING AND ITS APPLICATION IN AN INJECTION DEVICE

Title (de)

GEWICKELTE STREIFENFEDER UND DEREN BENUTZUNG IN EINEM INJEKTIONSGERÄT

Title (fr)

RESSORT A BANDE ENROULEE ET SON UTILISATION DANS UN DISPOSITIF D'INJECTION

Publication

EP 0953122 A1 19991103 (EN)

Application

EP 98900894 A 19980114

Priority

  • GB 9800114 W 19980114
  • GB 9700608 A 19970114

Abstract (en)

[origin: WO9830811A1] A coil spring of strip material is of non-uniform width. There may be a progressive taper from one end to the other, or there may be steps between portions (1, 2) of uniform width, each portion having a constant force characteristic. Other configurations are possible. For application to an injection device in which a capsule is spring-driven for its needle to project, and in which a piston in the capsule is then spring-driven to eject a dose, the spring has a wide portion (1) wound innermost which urges the capsule forwards, and a narrow portion (2) which then takes over to eject the dose.

IPC 1-7

F16F 1/10; A61M 5/20

IPC 8 full level

A61M 5/20 (2006.01); F16F 1/10 (2006.01)

CPC (source: EP)

A61M 5/2033 (2013.01); F16F 1/10 (2013.01)

Citation (search report)

See references of WO 9830811A1

Designated contracting state (EPC)

DE FR GB IT SE

DOCDB simple family (publication)

WO 9830811 A1 19980716; EP 0953122 A1 19991103; GB 9700608 D0 19970305; JP 2001511234 A 20010807

DOCDB simple family (application)

GB 9800114 W 19980114; EP 98900894 A 19980114; GB 9700608 A 19970114; JP 53067798 A 19980114