DEVICES AND METHODS FOR IMPROVING ACCURACY OF FLUID DELIVERY
3 Assignments
0 Petitions
Accused Products
Abstract
Devices and methods for delivering therapeutic fluid to a patient'"'"'s body are described. The devices may comprise a dispensing unit having a reservoir, a driving mechanism having a movable member for delivering therapeutic fluid to a patient'"'"'s body, at least one sensor for sensing a relative position of the movable member and generating a signal, and a processor for controlling the driving mechanism to deliver an amount of therapeutic fluid that compensates for a change in the flow of the therapeutic fluid occurring during fluid delivery. The methods may be implemented by operating the driving mechanism, receiving a signal based on the position of the movable member, determining an amount of therapeutic fluid to deliver, and controlling the driving mechanism to deliver an amount of fluid that compensates for a change in flow occurring during fluid delivery.
80 Citations
52 Claims
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1-28. -28. (canceled)
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29. An ambulatory infusion pump for delivering therapeutic fluid to a patient'"'"'s body, the pump including a dispensing unit comprising:
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a reservoir to retain therapeutic fluid; a driving mechanism for delivering therapeutic fluid from the reservoir into a patient'"'"'s body, the driving mechanism including a movable member that moves when therapeutic fluid is being delivered; at least one sensor configured to sense a relative position of the movable member, and generating a corresponding sensor signal; and a processor in electrical communication with the at least one sensor and configured with instructions to control the driving mechanism, wherein the processor controls the driving mechanism based on the sensor signal and at least one flow characteristic of the therapeutic fluid being delivered such that a compensation amount of therapeutic fluid is delivered to compensate for a change in the flow of therapeutic fluid occurring ring during operation of the driving mechanism. - View Dependent Claims (30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47)
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48. A method for delivering therapeutic fluid to a patient'"'"'s body, the method comprising the steps of:
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operating a driving mechanism to deliver therapeutic fluid to a patient, the driving mechanism including a movable member operatively coupled to a motor; receiving a sensor signal corresponding to a relative position of the movable member; determining amount of therapeutic fluid based on the sensor signal and on at least one flow characteristic of the therapeutic fluid; and controlling the driving mechanism to deliver the determined amount of therapeutic fluid to the patient to compensate for a change in the flow of therapeutic fluid occurring during operation of the driving mechanism. - View Dependent Claims (49, 50, 51, 52)
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Specification