Valve mechanism for a trocar, and a trocar
US12251132B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 22, 2019 |
| Grant date | Mar 18, 2025 |
| Priority date | — |
| Expiry date | Jun 19, 2042 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B2017/3464
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A valve mechanism for coupling to a trocar comprises a housing having an instrument bore extending therethrough from an upstream end to a downstream end and alignable with an instrument bore of the trocar. A gate valve comprising a pair of gate elements located in the housing is operable between a closed state closing the instrument bore and an open state clear of the instrument bore. First compression springs urge the gate elements into the closed state. A pair of engagement members, which are engageable with an instrument, for example, a laparoscope in the instrument bore, and which extend into the instrument bore from respective carrier elements through guide slots. The carrier elements are coupled to operating members of the gate elements through link members for operating the gate elements (22) from the closed state to the open state as the engagement members (33) are urged downwardly in in guide slots by an instrument being entered through the instrument bore.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.