Electrical potential shifting circuit for powered surgical stapler
US11116508B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2019 |
| Grant date | Sep 14, 2021 |
| Priority date | — |
| Expiry date | Jan 8, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2090/0808
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An apparatus includes a body, a motor, a shaft, a stapling assembly, and an electrical potential shifting device. The body includes a firing switch configured to generate a motor drive signal including at least one of a motor activation signal portion or a motor deactivation signal portion. The motor includes a first power terminal and a second power terminal which define an electrical potential energy differential therebetween. The motor is configured to selectively activate and deactivate in response to the electrical potential energy differential. The first power terminal is coupled to a power supply and the second power terminal is coupled to the electrical potential shifting device. The electrical potential shifting device increases the electrical potential energy differential of the motor in response to detecting the motor activation signal portion and decreases the electrical potential energy of the motor in response to detecting the motor deactivation signal portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.