US4140963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for measuring sugar concentration
Assignee: Siemens AG
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Filing: 1977-03-07
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Granted: 1979-02-20
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Expires: 1997-03-07
Abstract
Abstract A device for measuring sugar concentration, particularly in a body liquid, for example, blood of a patient is characterized in that an electrochemical glucose cell is used to produce an electrical signal corresponding to the sugar concentration.
Inventors
- 👤 Raghavendra Rao
- 👤 Ferdinand von Sturm
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 07:56
CPC Classifications
A; A61; A61B; A61B5/00; A61B5/0002; A61B5/0031; A61B5/145; A61B5/14532
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
80 words
Apparatus for measuring sugar concentration of human blood, comprising a cell (22) combining an electrode (25) composed of platinized platinum as the glucose electrode with at least one carbon catalyst electrode (23, 24) permeable to glucose, as the oxygen electrode, and a current sensing means coupled to said cell (22), the cell (22) itself is constructed so as to supply current to the current sensing means coupled to said cell (22) for providing an accurate measure of said sugar concentration.
Claim 2
Dependent Claim
80 words
Apparatus for measuring sugar concentration of human blood, comprising a cell (22) combining an electrode (25) composed of platinized platinum as the glucose electrode with at least one carbon catalyst electrode (23, 24) permeable to glucose, as the oxygen electrode, and a current sensing means coupled to said cell (22), the cell (22) itself is constructed so as to supply current to the current sensing means coupled to said cell (22) for providing an accurate measure of said sugar concentration.
Claim 3
Dependent Claim
48 words
Apparatus according to claim 1 with the cell (22) providing a cell idle voltage (U ZL ), said current sensing means comprising a volt meter (26, 27, 10) for determining the cell idle voltage (U ZL ) connected to the electrodes (25, 23, 24) of the cell (22).
Claim 4
Dependent Claim
43 words
Apparatus according to claim 1, with the electrodes (25, 23, 24) of the cell (22) being loaded with a resistance (28) of at least about twenty kilohms, and said current sensing means comprising a meter (26 through 28) selectively connected to the electrodes.
Claim 5
Dependent Claim
60 words
Apparatus according to claim 1, with a switch (6) connecting the electrodes (25, 23, 24) of the cell (22) to a resistance (29) of not more than about two hundred ohms, said current sensing means comprising a volt meter with a limit value indicator (17, 18) connected to the electrodes for sensing a transition time period of the cell voltage.
Claim 6
Dependent Claim
61 words
Apparatus for measuring sugar concentration of human blood, comprising a cell (22) combining a glucose-electrode composed of platinum with at least one counter electrode composed of silver/silverchloride, a current sensing means coupled to said cell (22), the cell (22) itself is constructed so as to supply current to the current sensing means for providing an accurate measure of said sugar concentration.
Claim 7
Dependent Claim
61 words
Apparatus for measuring sugar concentration of human blood, comprising a cell (22) combining a glucose-electrode composed of platinum with at least one counter electrode composed of silver/silverchloride, a current sensing means coupled to said cell (22), the cell (22) itself is constructed so as to supply current to the current sensing means for providing an accurate measure of said sugar concentration.
Claim 8
Dependent Claim
47 words
Apparatus according to claim 5, with the cell providing a cell idle voltage (U ZL ), said current sensing means comprising a volt meter (26, 27, 10) for determining the cell idle voltage (U ZL ) connected to the electrodes (25, 23, 24) of said cell (22).
Claim 9
Dependent Claim
43 words
Apparatus according to claim 5, with the electrodes (25, 23, 24) of the cell (22) being loaded with a resistance (28) of at least about twenty kilohms, and said current sensing means comprising a meter (26 through 28) selectively connected to the electrodes.
Claim 10
Dependent Claim
60 words
Apparatus according to claim 5, with a switch (6) connecting the electrodes (25, 23, 24) of the cell (22) to a resistance (29) of not more than about two hundred ohms, said current sensing means comprising a volt meter with a limit value indicator (17, 18) connected to the electrodes for sensing a transition time period of the cell voltage.
References Cited (Backward Citations)
US2181303A
Cited
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 |