Seals and sealing methods for a surgical instrument having an articulated end effector actuated by a drive shaft
US11098803B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 31, 2019 |
| Grant date | Aug 24, 2021 |
| Priority date | — |
| Expiry date | Jul 24, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2034/302
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Sealing assemblies and methods are disclosed for sealing a surgical instrument having an internal drive shaft subject to lateral displacement. A sealing assembly includes a rigid portion shaped to interface with an instrument shaft of the surgical instrument. A laterally oriented slot is open at a radially perimeter location and configured to receive an o-ring seal via the perimeter location. Apertures are disposed on opposing sides of the slot and open to the slot. The apertures are configured to receive the drive shaft there through and are larger than the drive shaft to accommodate lateral displacement of the drive shaft. The slot includes opposing internal sides spaced to interface with opposed axial surfaces of the o-ring seal. The seal inhibits axial transmission of an insufflated gas and/or bodily fluids while accommodating lateral displacement of the drive shaft.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.