Variable Volume, Shape Memory Actuated Insulin Dispensing Pump
2 Assignments
0 Petitions
Accused Products
Abstract
A portable pumping system provides insulin or other drugs to a user. A shape memory element is used to actuate the pump and an intelligent system controls the actuator in order to minimize stresses within the system and provide accurate and reliable dosage delivery. The control system utilizes various types of feedback to monitor and optimize the position of the pumping mechanisms. Physical design aspects also minimize stress and the combination of the physical design aspects and the intelligent operation of the system results in a lightweight and cost effective pump that may be used in a disposable fashion if desired.
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Citations
25 Claims
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1-20. -20. (canceled)
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21. A method for dispensing a liquid, comprising:
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providing a piston connected to a shape memory element; providing a potential to the shape memory element in order to change the length of the element; monitoring the position of the piston; and adjusting the potential applied to the shape memory element to move the piston and dispense liquid, based upon the monitored piston. - View Dependent Claims (22, 23, 24)
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25-27. -27. (canceled)
Specification