Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Reexamination Certificate
2006-02-14
2006-02-14
Kennedy, Sharon (Department: 3762)
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
C604S231000
Reexamination Certificate
active
06997910
ABSTRACT:
A valve assembly is disclosed which effectively partitions a syringe into proximal and distal chambers to provide a multi-chamber, sequentially dispensing syringe apparatus. The valve assembly may be effectively used with a variety of standard, currently available commercial syringes and pre-filled syringes. Incorporated in the valve assembly is a valved stopper having a valve (which may be a slit valve), an impact sensor which opens the valve upon impact between the valve assembly and internal distal end of the syringe and a gas separator which separates liquid from gas disposed in the proximal chamber to assure gas is not delivered therefrom. The valve assembly is displaced as a plunger of the syringe is displaced via communication through fluid in the proximal chamber of the syringe. The actuator has a latching feature which latches the valve to an open state after being opened by the impact sensor. The gas separator has a proximally disposed orifice which facilitates priming. The valve assembly may be made from two parts. One part, a valved stopper, may be molded from the same rubber based material used in syringe plunger stoppers. The second part, the valve actuator, may be injection molded as a single part. A synthetic resinous material which is compatible with manufacture of living hinges my be used for the second part. Multiple valve assemblies may be used in a single syringe barrel.
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: 5236420 (1993-08-01), Pfleger et al.
patent: 5298024 (1994-03-01), Richmond
patent: 5695465 (1997-12-01), Zhu
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 et al.
patent: 5785682 (1998-07-01), Grabenkort
patent: 5830193 (1998-11-01), Higashikawa
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: 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: 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
“Debioject (ClipnJect)” from www.debiotech.com, pp. 1-3.
Debiotech brochure from internet address www.debiotech.com (accessed May 25, 2004).
Howlett Michael Wallace
Mercer James Victor
Thorne Gale H.
Thorne, Jr. Gale H.
Infusive Technologies, LLC
Kennedy Sharon
Thorne, Patent Agent Gale H.
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