POSITIVE DISPLACEMENT PUMP HAVING PISTON AND/OR LINER WITH VAPOR DEPOSITED POLYMER SURFACE
摘要
<p>A metering pump for providing relatively small, precise volumes of fluid is provided. The pump piston and/or the interior of the cylinder has a surface finish exhibiting a roughness average within selected limits and a vapor deposited polymer such as polytetrafluoroethylene. A drive mechanism is provided for simultaneously rotating and reciprocating the piston within a cylindrical chamber. Fluid is thereby drawn into the chamber and expelled. The pump can be employed in a dialysate circuit or other fluidic circuits containing crystal or other residue-forming fluids, obviating the need for pump wash ports.</p>
申请公布号
WO2007021581(A2)
申请公布日期
2007.02.22
申请号
WO2006US30428
申请日期
2006.08.07
申请人
ROPINTASSCO 2, LLC;PINKERTON, HARRY, E., III;HOLLAND, CARLOS, G.