Injection devices

Details Injection devices Injection devices

2007-06-12

2007-06-12

Lucchesi, Niccholas (Department: 3763)

Surgery

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

Treating material introduced into or removed from body...

C604S198000

Reexamination Certificate

active

10486344

ABSTRACT:
When the injection device is applied to a patient's skin and a plunger is pressed, the entire syringe and a carrier move forwards in relation to a barrel such that ribs on the carrier snap past a rib on a shroud. The syringe is arrested by flanges coming up against the rib, and a spring is compressed and a needle is fully projected. Further pressing on the plunger ejects the dose. The needle shroud is kept at the rearward position by its firm engagement around the injection area. On withdrawal of the device, the shroud is pushed forwards by the spring to protect the needle. This draws fingers through gaps in the ribs, the fingers being forced to bend towards the fingers as the divergence takes effect.

REFERENCES:
patent: 5478316 (1995-12-01), Bitdinger et al.
patent: 6319233 (2001-11-01), Jansen et al.
patent: 6544234 (2003-04-01), Gabriel
patent: 6918889 (2005-07-01), Brunel
patent: 2001/0056263 (2001-12-01), Alchas et al.
patent: 0 966 983 (1999-12-01), None
patent: 2 794 650 (2000-12-01), None
patent: WO 99/37343 (1999-07-01), None
patent: WO 01 41841 (2001-06-01), None
patent: WO 02/083205 (2002-10-01), None

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