Electromagnetic actuator for a surgical instrument and method for setting a stroke distance
US10056179B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 18, 2015 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | May 24, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/00876
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An electromagnetic actuator for a medical instrument including: a stator; and a movable element, at least partly composed of a paramagnetic and/or a ferromagnetic material, and which can be reversibly moved from a first to a second position by the application of a switchable magnetic field, wherein the stator and the movable element have annular distal and proximal pole shoes corresponding to each other, wherein the distal pole shoes and/or the proximal pole shoes of the stator and the movable element are aligned with each other in an overlapping manner in the first and/or the second position, and the distal pole shoes and/or the proximal pole shoes of the stator and the movable element have a structure in the circumferential direction on the surfaces of pole shoes facing each other, with the structures corresponding to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.