Vacuum limiting medical pump
AssigneeNeovation AG
InventorsWerner Berner, Robert Riedweg
Life of this patent
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Abstract
A pump having electronic and mechanical components which allow an individually adjustable operation. Certain components periodically transform a driving current for an electrical drive. An adjustable clock generator adjusts transformation frequency. Pumping volume is determined and limited as desired by means of a position detection device. The pump also includes components for measuring the driving current that interact with an adjustable current-limiting device, thus allowing the pumping pressure of the pump to be adjusted and limited. The pump may include several pump cylinders which are controlled by a position control circuit in such a way that the generated partial vacuum follows a predetermined time characteristic.
Claims5
Vacuum limiting medical pump comprising at least one pump cylinder unit (24), an electrical drive (1) for said unit, a current supply unit for generating a driving current for said drive (1), and an adjustable current-limiting device (5), and means (2,8,5) to periodically transform the driving current,
- said means to periodically transform the driving current including a controlled current set-point adjuster (2,5,8), and an adjustable clock generator (3).
Dependencies are inferred from the claim text.