Method and apparatus for testing blood glucose in a reversible infusion line
US7367942B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 2006 |
| Grant date | May 6, 2008 |
| Priority date | — |
| Expiry date | May 16, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M5/14228
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus for automatically and periodically measuring a patient's blood glucose level wherein the patient has a catheter in a blood vessel and is receiving infusion fluid through the catheter. A testing unit is provided which has a main infusion channel and, in a preferred embodiment, the testing unit includes a side channel. The side channel has a restrictive cross-sectional area compared with the main infusion channel. A glucose test chamber is formed in the side channel. First and second valves are placed adjacent the test chamber in the side channel to isolate a blood sample for testing. The isolation of the sample provides more accurate blood glucose measurements than those provided by systems of the prior art. A second embodiment of the invention has an isolatable test chamber placed in the main infusion line and no side channel is utilized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.