Advance and retreat assisting tool for treatment instrument and endoscope system
US11224331B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 21, 2019 |
| Grant date | Jan 18, 2022 |
| Priority date | — |
| Expiry date | Apr 17, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61B1/018
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
An advance and retreat assisting tool for a treatment instrument includes: a base; an attaching portion; a first cylinder which is attached to the base; a second cylinder which has a fixing portion fixing the treatment instrument and slides in an advance and retreat direction with respect to the first cylinder along a center axis of the first cylinder; an advance and retreat mechanism which advances and retreats the second cylinder along the center axis with respect to the first cylinder by rotation; and an assisting portion which urges the second cylinder in a predetermined direction along the center axis with respect to the base with an urging force smaller than a resistance force when the second cylinder slides and assists the rotation of the advance and retreat mechanism when the advance and retreat mechanism rotates in one direction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.