Dilator
US11331459B2 · kind B2 · utility
1Cited by
7References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 24, 2019 |
| Grant date | May 17, 2022 |
| Priority date | — |
| Expiry date | Dec 1, 2039 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2025/0687
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A dilator includes a shaft with a tapered portion having an outer diameter that is smaller at a distal end than at a proximal end; a proximal end portion provided at a proximal end side of the tapered portion; and optionally a distal end portion provided at a distal end side of the tapered portion. Pitches of adjacent portions of the spirally-arranged protruding portion provided on the tapered portion are different (either smaller or larger) than those of adjacent portions of the spirally-arranged protruding portion provided on distal end side of the proximal end portion and/or on the distal end portion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.