Seals for surgical access devices
US11000313B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2019 |
| Grant date | May 11, 2021 |
| Priority date | — |
| Expiry date | Apr 25, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2039/0673
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A cannula for use in an access assembly includes an instrument valve housing including first and second housing sections and defining a cavity and a valve assembly disposed within the cavity of the instrument valve housing. The valve assembly includes a seal assembly including an outer flange and a septum seal extending across the outer flange, a guard assembly disposed within the outer flange of the seal assembly, and a centering mechanism. The guard assembly includes a plurality of guard members. Each guard member of the plurality of guard members includes a ring portion and a flap portion. The flap portions of the guard members of the guard assembly are configured to engage and stretch the septum seal during reception of a surgical instrument through the valve assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.