Endoscope valve and endoscope
US11241142B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 30, 2019 |
| Grant date | Feb 8, 2022 |
| Priority date | — |
| Expiry date | May 19, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B8/12
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An endoscope valve includes: a piston portion; and an attachment member including a surface forming a hollow space extending in a central axis direction. The piston portion includes: protrusions protruding in a direction perpendicular to the central axis and abutting a surface forming the hollow space of the attachment member; and a seal portion formed in a hollow disk shape with the central axis of the piston portion as a symmetry axis and configured to seal a portion between the attachment member and the seal portion. In the protrusions, when a length of the protrusion in a protrusion direction is indicated by dA, a length of the protrusion in the central axis direction is indicated by dB, and a shrinkage amount of the protrusion when the protrusion comes into pressure-contact with a pressure-contact object is indicated by dC, relationships of dB≤dA and dC<dA are satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.