US4140121A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Implantable dosing device
Assignee: Siemens AG
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Filing: 1977-06-02
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Granted: 1979-02-20
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Expires: 1997-06-02
Abstract
Abstract The invention relates to an implantable dosing device for the continuous, controllable release of medication in the human or animal body, comprising a medicine reservoir of variable volume and a liquid chamber which is tensionally connected to the medicine reservoir and the volume of which can be varied by liquid which is transported through an ion exchange diaphragm by electro-osmosis due to an electric field between two electrodes. According to the invention, the electrodes in such an implantable dosing device are hydrogen electrodes which are connected to each other by a line for hydrogen, and means are further provided for compensating hydrogen losses.
Inventors
- 👤 Dieter Kuhl
- 👤 Gunter Luft
- 👤 Konrad Mund
- 👤 Gerhard Richter
- 👤 Ferdinand V. Sturm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:23
CPC Classifications
A; A61; A61M; A61M5/00; A61M5/14; A61M5/142; A61M5/14244; A61M5/14276
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
95 words
In an implantable dosing device for the continuous, controllable release of medication in the human or animal body comprised of a medication reservoir of variable volume, a liquid chamber tensionally connected to said medication reservoir, and volume varying means comprised of an ion-exchange diaphragm interposed between two electrodes whereby liquid is transported in an electro-osmotic manner due to an electric field between said electrodes, the improvement wherein said electrodes are hydrogen electrodes connected to each other by way of a line for hydrogen, and wherein said dosing device further includes means for compensating hydrogen losses.
Claim 2
Dependent Claim
95 words
In an implantable dosing device for the continuous, controllable release of medication in the human or animal body comprised of a medication reservoir of variable volume, a liquid chamber tensionally connected to said medication reservoir, and volume varying means comprised of an ion-exchange diaphragm interposed between two electrodes whereby liquid is transported in an electro-osmotic manner due to an electric field between said electrodes, the improvement wherein said electrodes are hydrogen electrodes connected to each other by way of a line for hydrogen, and wherein said dosing device further includes means for compensating hydrogen losses.
Claim 3
Dependent Claim
29 words
An implantable dosing device according to claim 1, wherein said means for compensating hydrogen losses comprises a chamber containing material storing hydrogen under pressure provided at the hydrogen line.
Claim 4
Dependent Claim
26 words
An implantable dosing device according to claim 2, wherein said chamber in the hydrogen line contains a transition metal or a transition metal compound storing hydrogen.
Claim 5
Dependent Claim
17 words
An implantable dosing device according to claim 3 wherein said transition metal compound is LaCo 5 .
Claim 6
Dependent Claim
19 words
An implanatable dosing device according to claim 1, wherein said means for compensating hydrogen losses comprises an auxiliary electrode.
Claim 7
Dependent Claim
16 words
An implantable dosing device according to claim 5, wherein said auxiliary electrode is a glucose electrode.
Claim 8
Dependent Claim
17 words
An implantable dosing device according to claim 5, wherein said auxiliary electrode is a consumable metallic electrode.
Claim 9
Dependent Claim
41 words
An implantable dosing device according to claim 1 wherein each of the two hydrogen electrodes is provided with an ion exchange diaphragm on the outside thereof and said liquid chamber is arranged at least in part between the two hydrogen electrodes.
Claim 10
Dependent Claim
34 words
An implantable dosing device according to claim 8, wherein the hydrogen electrodes are covered, at least in part, with a layer of asbestos paper on the side facing away from said ion exchange diaphragm.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-02-19 | 1982-08-21 | 1983-02-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-02-19 | 1986-08-21 | 1987-02-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-02-19 | 1990-08-21 | 1991-02-20 | $7700.00 | Window Closed / Lapsed |