Flexible needle stop
US4908029A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 1989 |
| Grant date | Mar 13, 1990 |
| Priority date | — |
| Expiry date | Apr 25, 2009 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B90/02
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
The flexible needle stop includes a normally unfolded needle impenetrable needle barrier formed of a flexible foldable material. The flexible foldable material can be a single layer sheet material, a wire mesh material and/or one or more layers of scale-like components arranged side by side. The scale-like components are physically unconnected and of a size that permits flexion of the needle stop that incorporates the scale-like components. The flexible needle stop member can include a bead-like periphery which affords the needle stop member with a resilient memory and helps restore the needle stop member to its normally unfolded condition after a folding restraint is removed. The needle stop can be freely disposed within a fill chamber of a tissue expander, attached to an inner surface of the fill chamber or incorporated in the shell wall of a tissue expander.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.