Device for the dosed discharging of a liquid agent and infusion pump
First Claim
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1. A controller for controlling the delivery of a liquid agent in doses, comprising:
- a propulsion mechanism for moving a piston to deliver a dose of the agent, wherein the propulsion mechanism exerts a motive force on the piston substantially constantly unless interrupted; and
a mechanism for selectively interrupting the motive force.
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Abstract
A device for delivering a liquid agent in doses, the device including a receptacle for storing the liquid agent and a propulsion mechanism for advancing a piston toward an outlet of the receptacle in order to expel a dose of the agent, wherein the propulsion mechanism permanently acts on the piston with a propulsive force, and wherein the device further includes a mechanism for releasably blocking a piston advance. The invention encompasses embodiments in the form of an infusion pump adapted to include the device for delivering and a controller for controlling at least the mechanism for releasably blocking.
67 Citations
27 Claims
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1. A controller for controlling the delivery of a liquid agent in doses, comprising:
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a propulsion mechanism for moving a piston to deliver a dose of the agent, wherein the propulsion mechanism exerts a motive force on the piston substantially constantly unless interrupted; and
a mechanism for selectively interrupting the motive force. - View Dependent Claims (2, 3)
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4. A control device for the dosed expelling of a liquid agent, including from an infusion pump, comprising:
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a receptacle for storing the liquid agent;
a propulsion mechanism for advancing a piston toward an outlet of the receptacle in order to expel the agent, wherein the propulsion mechanism continuously acts on the piston with a propulsive force; and
a blocking mechanism whereby a piston advance is blocked and, in order to expel the agent, released. - View Dependent Claims (5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. An infusion pump for the long-term release of an agent, comprising:
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a receptacle for storing the liquid agent;
a propulsion mechanism for advancing a piston toward an outlet of the receptacle in order to expel the agent, wherein the propulsion mechanism continuously acts on the piston with a propulsive force;
a blocking mechanism for blocking and allowing the advance of the piston; and
a control apparatus that repeatedly releases the blocking mechanism in order to expel the agent in repeated, selected doses. - View Dependent Claims (26, 27)
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Specification