Device for delivering a pharmacologically active principle by electrolytic pumping
First Claim
1. A device for delivering a pharmacologically active principle by electrolytic pumping, the device including an electrolysis cell (C) comprising:
- a closed variable volume first chamber (2) containing a liquid electrolyte that gives off gas under the effect of an electrolysis voltage applied to a pair of electrodes (3,
4) in contact with the electrolyte, the gas given off causing the first chamber to expand; and
a variable volume second chamber (7), said second chamber opening out to the outside of said second chamber via an orifice (11) enabling the active principle to be delivered;
the total volume of the two chambers (2,
7) being constant, such that expansion of the first chamber causes the volume of the second chamber to be reduced and gives rise to a corresponding controlled expulsion of the active principle contained therein;
the two chambers (2,
7) are separated from each other by a flexible wall (6) uniformly subjected to the pressure resulting from the gas being given off in such a manner as to reduce the volume of the second chamber (7) and expel the active principle; and
the first chamber (2) contains the liquid electrolyte in which the pair of electrodes (3,
4) that extend over a major portion of the length of said first chamber are immersed in said liquid electrolyte so that the pair of electrodes are always at least in part in contact with the liquid electrolyte regardless of the position of the device.
1 Assignment
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Accused Products
Abstract
The device includes an electrolysis cell (C) comprising: a closed variable volume first chamber (2) containing an electrolyte that gives off gas under the effect of an electrolysis voltage applied to electrodes (3, 4) in contact with the electrolyte, the gas given off causing the first chamber to expand; and a variable volume second chamber (7) containing the active principle, said second chamber opening out to the outside via an orifice (11) enabling the active principle to be delivered; the total volume of the two chambers (2, 7) being constant, such that expansion of the first chamber causes the volume of the second chamber to be reduced and gives rise to a corresponding controlled expulsion of the active principle contained therein. According to the invention, the two chambers (2, 7) are separated from each other by a flexible wall (6) uniformly subjected to the pressure resulting from gas being given off in such a manner as to reduce the volume of the second chamber (7) and expel the active principle; and the first chamber (2) contains a liquid electrolyte in which the electrodes (3, 4) that extend over the major portion of the length of said first chamber are immersed so that the electrodes are always at least in part in contact with the electrolyte regardless of the position of the device.
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Citations
10 Claims
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1. A device for delivering a pharmacologically active principle by electrolytic pumping, the device including an electrolysis cell (C) comprising:
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a closed variable volume first chamber (2) containing a liquid electrolyte that gives off gas under the effect of an electrolysis voltage applied to a pair of electrodes (3,
4) in contact with the electrolyte, the gas given off causing the first chamber to expand; anda variable volume second chamber (7), said second chamber opening out to the outside of said second chamber via an orifice (11) enabling the active principle to be delivered; the total volume of the two chambers (2,
7) being constant, such that expansion of the first chamber causes the volume of the second chamber to be reduced and gives rise to a corresponding controlled expulsion of the active principle contained therein;the two chambers (2,
7) are separated from each other by a flexible wall (6) uniformly subjected to the pressure resulting from the gas being given off in such a manner as to reduce the volume of the second chamber (7) and expel the active principle; andthe first chamber (2) contains the liquid electrolyte in which the pair of electrodes (3,
4) that extend over a major portion of the length of said first chamber are immersed in said liquid electrolyte so that the pair of electrodes are always at least in part in contact with the liquid electrolyte regardless of the position of the device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification