System for quantizing bladder distension due to pressure using normalized surface area of the bladder
US6110111A · kind A · utility
28Cited by
2References
18Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 26, 1999 |
| Grant date | Aug 29, 2000 |
| Priority date | — |
| Expiry date | May 26, 2019 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/4227
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The apparatus is worn by a user and includes means for automatically scanning the bladder of the user with ultrasound signals. The returning signals are used to calculate the volume of urine in the bladder and also to calculate the actual surface area of the bladder. The theoretical surface area of a spherical bladder having the said calculated volume is then determined. A surface area index (SAI) is then determined as follows: ##EQU1## The SAI value is an indication of the roundness of the bladder and hence the pressure within the bladder.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.