Tympanostomy tube delivery device with cutting dilator
US9681891B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 14, 2013 |
| Grant date | Jun 20, 2017 |
| Priority date | — |
| Expiry date | Oct 13, 2035 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00477
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tympanostomy tube delivery device comprises a body, a cannula extending distally from the body, and a cylindraceous member disposed within the cannula. The cylindraceous member comprises a tubular portion and a plurality of leaves positioned at the distal end of the tubular portion. The leaves are movable between a collapsed position and an expanded position. The cylindraceous member is slidable relative to the cannula to selectively expose the leaves relative to the open distal end of the cannula. A first leaf of the plurality of leaves has a sharp distal point configured to pierce a tympanic membrane and a longitudinally extending sharp edge. The cylindraceous member may be used to create and dilate a myringotomy incision in a tympanic membrane. The tympanostomy tube delivery device may then be used to deploy a tympanostomy tube through the myringotomy incision.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.