ELECTROMAGNETIC INFUSION PUMP WITH INTEGRAL FLOW MONITOR
First Claim
1. An apparatus for pumping fluid through a flexible tubing, wherein the tubing has an upstream end and a downstream end, comprising:
- an upstream pincher having a closed position and an open position, wherein fluid flow from the upstream end of the tubing into the apparatus is prevented when the upstream pincher is in the closed position;
an armature configured to compress the tubing when in a first position and uncompress the tubing when in a second position;
a downstream pincher having a closed position and an open position, wherein fluid flow from the apparatus to the downstream end of the tubing is prevented when the downstream pincher is in the closed position;
a control module configured to move the armature to the first position when the upstream pincher is in the closed position and to the second position when the upstream pincher is in the open position.
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Accused Products
Abstract
An apparatus for pumping fluid through a flexible tubing is provided. The apparatus uses an electromagnet to activate upstream and downstream pinchers to control fluid flow. An armature is configured to compress the tubing, and in combination with the pinchers creates a fluid flow in the flexible tubing. Downstream occlusions in the tubing can be detected by monitoring for conditions wherein the armature does not close fully. Upstream occlusions in the tubing can be detected by monitoring for conditions wherein the armature does not open fully. A control module can be incorporated into the device for controlling the movement of the components and monitoring for occlusion conditions.
148 Citations
25 Claims
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1. An apparatus for pumping fluid through a flexible tubing, wherein the tubing has an upstream end and a downstream end, comprising:
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an upstream pincher having a closed position and an open position, wherein fluid flow from the upstream end of the tubing into the apparatus is prevented when the upstream pincher is in the closed position; an armature configured to compress the tubing when in a first position and uncompress the tubing when in a second position; a downstream pincher having a closed position and an open position, wherein fluid flow from the apparatus to the downstream end of the tubing is prevented when the downstream pincher is in the closed position; a control module configured to move the armature to the first position when the upstream pincher is in the closed position and to the second position when the upstream pincher is in the open position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An infusion pump comprising a detector for detecting an occlusion in an infusion tube, comprising:
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an armature configured to compress the infusion tube when in a first position and uncompress the infusion tube when in a second position; a sensor configured to determine when the armature is in the first position and in the second position; and an occlusion control module linked to the sensor and configured to determine when the armature fails to reach the first position or the second position, thereby indicating an occlusion in the infusion tube. - View Dependent Claims (21, 22, 23)
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24. An infusion pump comprising:
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a flow sensor configured to detect fluid flow through a section of tubing; a measurement module linked to the flow sensor and configured to measure the rate of fluid flow through the section of tubing; a first control input configured to set the rate of fluid flow to the measured rate; a second control input configured to activate the infusion pump to pump fluid at the set rate. - View Dependent Claims (25)
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Specification