Injection device with a two-way slip coupling

Details Injection device with a two-way slip coupling Injection device with a two-way slip coupling

2011-06-07

2011-06-07

Lucchesi, Nicholas D (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

Reexamination Certificate

active

07955303

ABSTRACT:
An injection device including casing with a reservoir for an injectable product, an operating button which can be moved relative to the casing in a dosing direction which increases the dosage and in a correcting direction to set a product dosage, a conveying member for delivering the dosage set, a slip coupling comprising a latching element and a co-operating latching element which latch to each other in a latching engagement and couple the operating button to the casing in a positive and non-positive fit in discrete latching positions during a movement in the dosing direction or the correcting direction, and a spring member which opposes the movement of the operating button in at least one of the directions with a spring force, wherein the latching element or co-operating latching element are shaped such that in the latching engagement they offer a lower resistance to the movement in the at least one of the directions than to the movement in the other direction.

REFERENCES:
patent: 6004297 (1999-12-01), Steenfeldt-Jensen et al.
patent: 6699224 (2004-03-01), Kirchhofer et al.
patent: 6936032 (2005-08-01), Bush et al.
patent: 7686786 (2010-03-01), Moller et al.
patent: 2002/0120235 (2002-08-01), Enggaard
patent: 10237258 (2004-03-01), None
patent: 1351732 (2005-06-01), None
patent: 01/72361 (2001-10-01), None

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