Flexible tube assembly for endoscope
US4805595A · kind A · utility
36Cited by
6References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 21, 1988 |
| Grant date | Feb 21, 1989 |
| Priority date | — |
| Expiry date | Apr 21, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG02B23/2476
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A flexible tube assembly for an endoscope has outer diameter D and includes a helical tube constituted by a helically wound belt-like member having width l and thickness t. The helical tube has inner diameter d, and gaps s are formed between adjacent coils of the belt-like member of the helical tube. Gap s satisfies the following inequalty: EQU 3.gtoreq.s.gtoreq.l (d/2+t)/(30+D/2-d/2-t) (mm) A net tube covers the outer surface of the helical tube. An outer sheath covers the outer surface of the net tube.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.