Obstetrical vacuum extractor cup
US5957931A · kind A · utility
6Cited by
35References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | May 11, 1998 |
| Grant date | Sep 28, 1999 |
| Priority date | — |
| Expiry date | May 11, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/308
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An obstetrical vacuum extractor comprising a vacuum cup to which a disk assembly and attached traction cord are rotatably coupled. The cup has a protrusion extending from its base, and the disk assembly a bore for receiving the protrusion. The protrusion is then preferably ultrasonically welded to create a button to rotatably retain the disk assembly on the cup.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.