Electrochemical actuator
First Claim
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1. An actuator device, comprising:
- an electrochemical cell including a negative electrode and a positive electrode, wherein at least a portion of the negative electrode is formed with a material formulated to at least one of intercalate, de-intercalate, alloy with, oxidize, reduce, or plate with the positive electrode such that a differential strain is imparted to the positive electrode, such that the differential strain produces a displacement of at least a portion of the electrochemical cell upon charging or discharging of the electrochemical cell.
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Abstract
The present invention provides systems, devices, and related methods, involving electrochemical actuation. In some cases, application of a voltage or current to a system or device of the invention may generate a volumetric or dimensional change, which may produce mechanical work. For example, at least a portion of the system may be constructed and arranged to be displaced from a first orientation to a second orientation. Systems such as these may be useful in various applications, including pumps (e.g., infusion pumps) and drug delivery devices, for example.
148 Citations
22 Claims
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1. An actuator device, comprising:
an electrochemical cell including a negative electrode and a positive electrode, wherein at least a portion of the negative electrode is formed with a material formulated to at least one of intercalate, de-intercalate, alloy with, oxidize, reduce, or plate with the positive electrode such that a differential strain is imparted to the positive electrode, such that the differential strain produces a displacement of at least a portion of the electrochemical cell upon charging or discharging of the electrochemical cell. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A device for delivering a fluid to a patient comprising:
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an electrochemical cell including a negative electrode and a positive electrode, wherein at least a portion of the negative electrode is formed with a material formulated to at least one of intercalate, de-intercalate, alloy with, oxidize, reduce, or plate with the positive electrode upon at least one of a charge or a discharge of the electrochemical cell, resulting in a deflection of at least one of the negative electrode or the positive electrode, and wherein the deflection causes delivery of a fluid into a body. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 21)
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16. A device for delivering a therapeutic to a patient comprising:
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a fluid reservoir; a housing suited for removably associating the fluid reservoir with the body of the patient; and an electrochemical cell including a negative electrode and a positive electrode, wherein at least a portion of the negative electrode is formed with a material formulated to at least one of intercalate, de-intercalate, alloy with, oxidize, reduce, or plate with the positive electrode such that a differential strain is imparted to the positive electrode, the differential strain producing a displacement of at least a portion of the electrochemical cell upon charging or discharging of the electrochemical cell, wherein the displacement of at least a portion of the electromechanical cell is operative to cause fluid to be delivered from the fluid reservoir. - View Dependent Claims (17, 18, 19, 20, 22)
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Specification