Medico-surgical devices
US8092390B2 · kind B2 · utility
16Cited by
29References
3Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 17, 2002 |
| Grant date | Jan 10, 2012 |
| Priority date | — |
| Expiry date | Apr 7, 2026 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/1433
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
An embryo replacement catheter has a flexible extruded shaft of a transparent polyurethane with a bore extending along its length. Gas bubbles of a diameter in the range 5μ to 10μ are incorporated into the thickness of the wall of the shaft by adding gas during extrusion. The bubbles are selected to increase the visibility of the catheter under ultrasound imaging whilst still enabling material flowing along the catheter to be seen.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.