Multi-chamber, sequential dose dispensing syringe

Details Multi-chamber, sequential dose dispensing syringe Multi-chamber, sequential dose dispensing syringe

2006-05-23

2006-05-23

Kennedy, Sharon (Department: 3767)

Surgery

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

Treating material introduced into or removed from body...

C604S231000

Reexamination Certificate

active

07048720

ABSTRACT:
A valve assembly is disclosed which partitions a conventional syringe into proximal and distal chambers to provide a multi-chamber, sequentially dispensing syringe apparatus. Incorporated in the valve assembly is a valved stopper having a valve (e.g. a slit valve) and a separator which filters out gas from liquid being dispensed through the valve assembly. A syringe plunger communicates through fluid in the proximal chamber to force displacement of the valve assembly. The valve is actuated by differential pressure of a force greater than the valve assembly displacement force. The valve assembly may be made from two parts: (1) a valved stopper (may be molded from basic syringe plunger material); (2) a separator (may be injection molded from syringe barrel material). Key features of such a multi-chamber syringe apparatus are (1) fluids in the chambers are kept disparate; (2) the valve assembly may be used in conventional syringes; (3) gas in a closed chamber is filtered from delivered liquid; (4) bi-stable operation of a valve assembly valve permits reflux free operation; (5) a clinch in the separator holds the valve securely closed until the valve is opened by a predetermined action, such action being tactilely sensible. A tubing set is disclosed which may be added to provide a third disparate chamber.

REFERENCES:
patent: 3976068 (1976-08-01), Lundquist
patent: 4643721 (1987-02-01), Brunet
patent: 4668223 (1987-05-01), Grotenhuis
patent: 4792329 (1988-12-01), Schreuder
patent: 4929230 (1990-05-01), Pfleger et al.
patent: 5171220 (1992-12-01), Morimoto
patent: 5213236 (1993-05-01), Brown et al.
patent: 5236420 (1993-08-01), Pfleger et al.
patent: 5271531 (1993-12-01), Rohr et al.
patent: 5298024 (1994-03-01), Richmond
patent: 5695465 (1997-12-01), Zhu
patent: 5704520 (1998-01-01), Gross
patent: 5704918 (1998-01-01), Higashikawa
patent: 5713857 (1998-02-01), Gremard et al.
patent: 5743886 (1998-04-01), Lynn et al.
patent: 5743890 (1998-04-01), Hjertman
patent: 5785682 (1998-07-01), Grabenkort
patent: 5830193 (1998-11-01), Higashikawa et al.
patent: 5851200 (1998-12-01), Higashikawa et al.
patent: 5899881 (1999-05-01), Grimard et al.
patent: 6027481 (2000-02-01), Barrelle et al.
patent: 6045004 (2000-04-01), Elliott
patent: 6077252 (2000-06-01), Siegel
patent: 6120478 (2000-09-01), Moore et al.
patent: 6132400 (2000-10-01), Waldenburg
patent: 6142977 (2000-11-01), Kolberg et al.
patent: 6149628 (2000-11-01), Szapiro et al.
patent: 6161364 (2000-12-01), Kolberg
patent: H2027 (2002-06-01), Brown et al.
patent: 6544233 (2003-04-01), Fukui et al.
patent: 6602223 (2003-08-01), Szapiro et al.
patent: 6622721 (2003-09-01), Vedrine et al.
patent: 6641561 (2003-11-01), Hill et al.
patent: 6723074 (2004-04-01), Halseth
patent: 6740062 (2004-05-01), Hjertman
patent: 6866653 (2005-03-01), Bae
patent: 7001362 (2006-02-01), Vincent
patent: 2002/0192113 (2002-12-01), Uffenheimer et al.
“Debioject (ClipnJect)” from www.debiotech.com, pp. 1-3.
Debiotech brochure from internet address www.debiotech.com (accessed May 25, 2004).

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