Apparatus and methods for measuring pulsatile blood process stream pressure
US4857043A · kind A · utility
4Cited by
2References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 25, 1987 |
| Grant date | Aug 15, 1989 |
| Priority date | — |
| Expiry date | Nov 25, 2007 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M1/3639
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A positive gauge blood pressure signal is transmitted to a gas column from a pulsatile blood flow stream hydrostatically higher than the pressure transducer. Particularly, a first conduit having a predetermined internal diameter smaller than a second conduit is connected at one end to the blood flow stream. The first conduit extends to a turnaround below the pressure transducer and is connected to the second conduit. The opposite end of the second conduit connects with the pressure transducer. The small internal diameter of the first conduit maintains the meniscus of the blood intact notwithstanding the pulsatile blood stream.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.