Anvil assembly of circular stapling device including alignment splines
US10542993B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 24, 2017 |
| Grant date | Jan 28, 2020 |
| Priority date | — |
| Expiry date | Apr 2, 2038 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/0812
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A tool assembly includes a cartridge assembly, a shell, and an anvil assembly. The shell houses the cartridge assembly and defines a passage. The shell includes alignment splines that are disposed within the passage and define channels between adjacent alignment splines. The anvil assembly includes an anvil and a center rod that extends from the anvil. The center rod defines a longitudinal axis and includes a first spline and second splines. The first spline includes a first leading facet that is configured to engage the alignment splines to clock the anvil assembly relative to the cartridge assembly. The second splines are radially spaced apart about the longitudinal axis. Each of the second splines includes a leading end that defines a plane that is substantially orthogonal to the longitudinal axis. The leading end is configured to crash with the alignments spines when the anvil assembly is misaligned with the cartridge assembly.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.