INFUSION PUMP WITH INTEGRATED PERMANENT MAGNET
First Claim
1. An infusion pump configured to pump fluid through a flexible tubing, comprising:
- an armature configured to compress the tubing when in a first position and uncompress the tubing when in a second position;
a permanent magnet providing an attractive force that moves the armature to the first position to compress the tubing; and
an electronic device configured to overcome the attractive force of the permanent magnet and uncompress the tubing by moving the armature from the first position to the second position.
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Accused Products
Abstract
Described herein is an infusion pump with an integrated permanent magnet. The permanent magnet is positioned to provide an attractive force that moves an armature to compress a fluid-filled infusion tube. An electromagnet can be activated to overcome the attractive force of the permanent magnet and move the armature away from the infusion tubing. The force required to overcome the permanent magnet is much less than the force required to compress the tubing. For this reason the infusion pump has very low power consumption since much of the pumping work is provided by the permanent magnet.
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Citations
21 Claims
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1. An infusion pump configured to pump fluid through a flexible tubing, comprising:
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an armature configured to compress the tubing when in a first position and uncompress the tubing when in a second position; a permanent magnet providing an attractive force that moves the armature to the first position to compress the tubing; and an electronic device configured to overcome the attractive force of the permanent magnet and uncompress the tubing by moving the armature from the first position to the second position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method of operating an infusion pump, wherein the infusion pump comprises an armature configured to compress and uncompress infusion tubing, and wherein a permanent magnet provides an attractive force that moves the armature to compress the tubing, comprising:
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activating an electronic device that overcomes the attractive force of the permanent magnet and moves the armature to uncompress the infusion tubing; and deactivating the electronic device, wherein the deactivation allows the attractive force of the permanent magnet to compress the infusion tubing. - View Dependent Claims (14, 15, 16, 17, 18)
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19. An infusion pump, comprising:
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an armature configured to compress an infusion tube when in a first position and uncompress the tube when in a second position; a permanent magnet providing an attractive force that moves the armature to the first position to compress the tube; means for activating an electronic device that overcomes the attractive force of the permanent magnet and moves the armature to uncompress the infusion tube; and means for deactivating the electronic device, wherein the deactivation allows the attractive force of the permanent magnet to compress the infusion tube. - View Dependent Claims (20, 21)
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Specification