Apparatus for determining the conductivity of blood
US5842998A · kind A · utility
106Cited by
4References
7Claims
0Family size
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Key dates
| Filing date | Apr 16, 1997 |
| Grant date | Dec 1, 1998 |
| Priority date | — |
| Expiry date | Apr 16, 2017 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/287
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An in vivo apparatus for determining the absolute conductivity of a liquid such as human blood, including the steps of determining a location in a ventricle of a patient's heart at which blood conductivity may be measured effectively, positioning a catheter having a plurality of spaced electrodes in the ventricle such that at least a pair of adjacent electrodes are positioned at the location, applying a current of known magnitude to the adjacent electrodes, measuring the voltage between the adjacent electrodes, and determining the conductivity of the patient's blood from the known current and measured voltage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.