Translatable outer tube for sealing using shielded lap chole dissector
US10357303B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2015 |
| Grant date | Jul 23, 2019 |
| Priority date | — |
| Expiry date | Aug 30, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2018/00607
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
Aspects of the present disclosure are presented for a surgical instrument for cutting and sealing tissue. In some embodiments, the surgical instrument includes a handle assembly, a shaft, and an end effector. The end effector may include: a blade that vibrates at an ultrasonic frequency, a shielded portion enclosing a back edge of the blade, a high-friction surface coupled to the shielded portion and positioned between the shielded portion and the back edge of the blade. A space is defined between the high-friction surface and the back edge of the blade when the end effector is in a cutting configuration. In a sealing configuration, the high-friction surface contacts the back edge of the blade, which generates heat based on ultrasonic vibrations of the blade rubbing against the high-friction surface. The shielded portion can coagulate bleeding tissue based on heat transfer from the high-friction surface to the shielded portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.