Hydraulic syringe drive
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 20, 1984
Grant Date -
N/A
app pub date -
Aug 3, 1981
filing date -
Aug 3, 1981
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A syringe driving unit comprising free pistons in interconnected cylindrical chambers, one of the pistons carrying a syringe plunger driver and being biased, directly or indirectly, in the driving direction, and one piston being movable to force both pistons into primed or loaded position, the connections between the chambers including a pressure regulator, flow regulator and a needle valve to regulate adjustably the return flow or hydraulic fluid corresponding to the movement of the driving piston. The priming piston may be moved mechanically or pneumatically, and fail-safe mechanism may be provided, if needed, to become effective in case of leakage. Bolus delivery, to augment optionally the adjusted flow, is also provided for.
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Family
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Cited Art Landscape
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