Anti-reflux drain tube and drainage meter combination
US4633887A · kind A · utility
10Cited by
5References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 3, 1984 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Aug 3, 2004 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B5/20
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A drain tube for urine is connected at its distal end to a urine meter. The tube has a predetermined point of weakness so that when the meter is lifted to dump the urine therefrom, the tube kinks off at the point of weakness, thereby preventing passage of urine from the meter back up the drain tube during dumping. The point of weakness is formed by simultaneously stretching and heating a section of the tube while the inner diameter of the tube is held constant on a mandrel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.