Rotational orientation indicating hollow needle assembly
US8617111B2 · kind B2 · utility
Inventor
Key dates
| Filing date | Jan 4, 2012 |
| Grant date | Dec 31, 2013 |
| Priority date | — |
| Expiry date | Jan 4, 2032 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61M2205/6036
- WIPO fieldMedical technology
- WIPO sectorInstruments
Abstract
A rotational orientation indicating hollow needle assembly having a needle, stylet, and hub. A hub sidewall has at least one external surface with at least one humanly tactilely discernible surface feature indicating the rotational relationship between the hub and the needle. Any portion of any of the assembly may bear indicia, or may be color-coded, to represent the size (gauge) of the needle, or needle type as an additional guide. In an exemplary embodiment the hub may be configured with two bevel face orientation features and two bevel orthogonal orientation features alternately spaced in a radial manner about the hub. An operator pinching the hub between a thumb and forefinger thus immediately feels these orientation features. When the assembly is rotated between the thumb and forefinger, these differing orientation features rotate as well, and the difference in tactile sensation immediately alerts the operator to the position of the needle bevel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.