Endoscope valve and endoscope
US11389053B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 29, 2019 |
| Grant date | Jul 19, 2022 |
| Priority date | — |
| Expiry date | Nov 22, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endoscope valve for controlling connection states of a plurality of conduits formed in an endoscope includes: a piston portion; and an attachment member. The piston portion includes a seal portion. A surface of the attachment member facing the seal portion includes a first inner peripheral surface which is axially symmetrical to a central axis of the attachment member and has a diameter smaller than a diameter of an outer periphery of the seal portion, a second inner peripheral surface which is axially symmetrical to the central axis of the attachment member and has a diameter equal to or larger than the diameter of the outer periphery of the seal portion, and a connection surface which is axially symmetrical to the central axis of the attachment member and connects the first inner peripheral surface and the second inner peripheral surface to each other.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.