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.
-
Citations
10 Claims
-
1-4. -4. (canceled)
-
5. A method of dispensing liquid, comprising:
-
drawing liquid into a pumping chamber by causing a shape memory material to contract and move a piston; expelling liquid from the pumping chamber by causing the shape memory material to relax and move the piston; monitoring the position of the piston; and controlling the position of the piston based upon the monitored position. - View Dependent Claims (6, 7, 8, 9)
-
-
10-27. -27. (canceled)
Specification