Urinary drainage device
US5451218A · kind A · utility
Inventor
Key dates
| Filing date | Mar 2, 1994 |
| Grant date | Sep 19, 1995 |
| Priority date | — |
| Expiry date | Mar 2, 2014 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0078
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The invention relates to an improved urinary drainage device which simulates the inlet end of the normal, non-catheterized urethra. This novel design significantly reduces the risk of urinary tract infection typically associated with internal catheters by providing a drainage duct comprising a truncated, collapsible inner lumen. Like the non-catheterized urethra, the collapsible inner lumen collapses after urination to prevent urine back flow. The invention further relates to an improved evacuator-type collection receptacle, the improvement comprising a resilient means or displacement means for controlling the negative pressure created within the collection receptacle.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.