Drug delivery device with electrically controlled volume changing means
First Claim
1. A drug delivery device comprising:
- a drug reservoir chamber containing a substance to be delivered, said drug reservoir chamber in fluid connection with a drug administration element, and a control chamber comprising a battery, said battery comprising a housing, electrodes and an electrolyte, said housing surrounding said electrodes and said electrolyte, said battery being configured such that the combined volume of said electrodes and electrolyte changes upon the discharge of said battery, and a mechanical coupling element coupling said battery to said drug reservoir chamber, the arrangement being such that a change in said combined volume during discharging of said battery displaces a portion of the housing, and said displacement of the housing is mechanically conveyed by said mechanical coupling element to said drug chamber resulting in expulsion of said substance from said drug reservoir chamber towards said drug administration element.
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Accused Products
Abstract
The present invention provides a drug delivery device comprising a drug reservoir chamber (15) containing a substance (16) to be delivered in fluid connection with a drug administration means (17) and (18), and a hydraulic control chamber (9) containing an electrically controlled, non-gassing, volume changing means (13), a coupling means (14) coupling said hydraulic control chamber (9) to said drug chamber (15), the arrangement being such that a change in the electrical control means (11) causes a change in the volume of the volume changing means (13), the volume change being conveyed by the coupling means (14) to the drug chamber (15) such that the substance (16) is expelled from the drug chamber (15) towards the drug administration means (17) and (18).
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Citations
36 Claims
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1. A drug delivery device comprising:
- a drug reservoir chamber containing a substance to be delivered, said drug reservoir chamber in fluid connection with a drug administration element, and a control chamber comprising a battery, said battery comprising a housing, electrodes and an electrolyte, said housing surrounding said electrodes and said electrolyte, said battery being configured such that the combined volume of said electrodes and electrolyte changes upon the discharge of said battery, and a mechanical coupling element coupling said battery to said drug reservoir chamber, the arrangement being such that a change in said combined volume during discharging of said battery displaces a portion of the housing, and said displacement of the housing is mechanically conveyed by said mechanical coupling element to said drug chamber resulting in expulsion of said substance from said drug reservoir chamber towards said drug administration element.
- View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31)
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32. A drug delivery device comprising:
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a drug reservoir chamber containing a substance to be delivered, said drug reservoir chamber in fluid connection with a drug administration element, and a control chamber comprising a battery, said battery comprising a housing, a zinc anode, a cathode and an electrolyte, said housing surrounding said anode, said cathode, and said electrolyte, said battery being configured such that the combined volume of said zinc anode and cathode and electrolyte expands upon the discharge of said battery, and a mechanical coupling element coupling said battery to said drug reservoir chamber, the arrangement being such that a change in said combined volume during discharging of said battery displaces a portion of the housing, and said displacement of the housing is mechanically conveyed by said mechanical coupling element to said drug chamber resulting in expulsion of said substance from said drug chamber towards said drug administration element. - View Dependent Claims (33, 34, 35, 36)
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Specification