Surgical instruments
US8512365B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 31, 2007 |
| Grant date | Aug 20, 2013 |
| Priority date | — |
| Expiry date | Jun 20, 2030 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/00791
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A surgical device. The surgical device may comprise a transducer, an end effector, a generator and a control circuit. The transducer may be configured to provide vibrations. The end effector may be coupled to the transducer and may extend from the transducer along the longitudinal axis. The generator may provide an electrical signal to the transducer. Also, the control circuit may modify a current amplitude of the electrical signal in response to a change in a vibration frequency of the end effector. Accordingly to various embodiments, the control circuit may detect a first contribution to a vibration frequency of the end effector, the first contribution originating from tissue in contact with the end effector. Also, according to various embodiments, the control circuit may indicate a change in a vibration frequency of the end effector.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.