Apparatus and method for determining physiologic characteristics of body lumens
US5275169A · kind A · utility
138Cited by
10References
35Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 1992 |
| Grant date | Jan 4, 1994 |
| Priority date | — |
| Expiry date | Jan 15, 2012 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/0215
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A system includes a catheter (10) having a low pressure balloon (42) at of one end thereof, a precise, low pressure, low volume fluid infusion means (41) and a pressure sensor (43). The balloon (42) is introduced to a body lumen, such as a blood vessel, and inflated to a pressure at or just above physiologic, typically being below 200 mmhg. From the balloon volume at a particular pressure, the internal cross-sectional area and diameter of the vessel can be calculated. Additional calculations can be made at other pressures below 200 mmhg to determine compliance of the vessel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.