Surgery – Means for introducing or removing material from body for... – Treating material introduced into or removed from body...
Patent
1995-03-31
1997-08-12
Rimell, Sam
Surgery
Means for introducing or removing material from body for...
Treating material introduced into or removed from body...
604121, 604151, 210656, 210659, A61M 3700, B01D 1508
Patent
active
056560346
ABSTRACT:
A syringe pump particularly adapted for delivery of small volumes at a high pressure in an accurate and reproducible manner. The syringe pump includes a frame, a motor attached to the frame, and a lead screw drivably connected to the motor. A cover seal is mounted to the front end of the lead screw, the cover seal having grooves formed therein to facilitate mounting and demounting of the cover seal. The pump further includes a cylindrical barrel within which the cover seal reciprocates, the barrel being made of a ceramic material, wherein the barrel is fixedly attached to the frame at the front end and floatably mounted to the frame at the back end. A barrel head is mounted to the front end of the barrel for closing off that end of the barrel, the barrel head including an outlet port for allowing fluid to enter and exit the barrel. In addition, the present invention includes a multi-syringe gradient syringe pump, a liquid chromatography system, a cover seal, and a mixer for mixing multiple flow streams.
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Kochersperger Michael L.
Kowallis Reid B.
Pham Andrew A.
Grossman Paul D.
Racunas Robert V.
Rimell Sam
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