Injection device

Details Injection device Injection device

1994-08-24

1996-01-02

Rosenbaum, C. Fred

Surgery

Means for introducing or removing material from body for...

Treating material introduced into or removed from body...

604136, 604138, 604156, 604232, A61M 520

Patent

active

054803870

ABSTRACT:
An injection device (10) is adapted to receive a cartridge (11) holding injection fluid (12). This cartridge (11) is displaceable in the proximal direction in the injection device counter to the force of a resetting spring (157). An adjustable-length tappet (80) is biased in the proximal direction by a spring (53), is displaceable in the injection device between a proximal end position and a distal end position, and has a threaded spindle (19) which is guided in the thread (17) of an adjusting member (15), serves to act upon a plunger (23) provided in the cartridge (11), and has a guide member (67) associated with it; the guide member is connected to it in a manner fixed against relative rotation but axially freely displaceably. This guide member (67) is rotatable relative to the housing (100) of the injection device (10) in the distal end position of the tappet (80), but not in the proximal end position thereof.

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