Suction instrument with varying inner diameter
US11305049B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 7, 2018 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Feb 21, 2040 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2210/0618
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A suction instrument includes a grip portion and a cannula. The grip portion includes a suction port and defines a first lumen. The cannula extends distally from the grip portion. The cannula defines a second lumen in fluid communication with the first lumen of the grip portion. The cannula includes a proximal portion and a distal portion. The proximal portion of the cannula defines a first portion of the second lumen. The first portion of the second lumen has a first cross-sectional area. The distal portion terminates into an open distal end. The distal portion of the cannula defines a second portion of the second lumen. The second portion of the second lumen has a second cross-sectional area. The second cross-sectional area is smaller than the first cross-sectional area.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.