Intravascular liquid velocity sensing method using a polarographic electrode
US3930493A · kind A · utility
69Cited by
3References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 7, 1974 |
| Grant date | Jan 6, 1976 |
| Priority date | — |
| Expiry date | Oct 7, 1994 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/1473
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The linear flow rate of a liquid containing dissolved oxygen, such as blood, can be determined by means of an electrode assembly having exposed to the liquid a relatively large polarographically active cathode and spaced therefrom a reference anode. With an applied energizing voltage of about 0.4-0.9 volts a current plateau is reached which is proportional to fluid flow rate. As the device is also sensitive to oxygen content, compensation can be measured by providing on the assembly an oxygen sensing membrane covered polarographic electrode pair of the Clark type.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.