Jon W Stevenson

US Patent:

8617111, Dec 31, 2013

Filed:

Jan 4, 2012

Appl. No.:

13/343284

Inventors:

Jon R. Stevenson - Powell OH, US

International Classification:

A61M 5/178

US Classification:

60416401, 60416501

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.

US Patent:

20140088516, Mar 27, 2014

Filed:

Nov 26, 2013

Appl. No.:

14/090544

Inventors:

Jon R. Stevenson - Powell OH, US

International Classification:

A61M 5/00

US Classification:

604263, 604272

Abstract:

A visually size-gauging hollow needle assembly having a needle, stylet, and hub. At least one of a needle sleeve, needle bedding, needle attachment compound, or external indicia is size-gauging, generally by color, to indicate different sized (gauging) needles. In some embodiments, 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. An operator pinching the hub between a thumb and forefinger thus immediately feels these surface features, which may reflect the position of a needle barrel. When the assembly is rotated between the thumb and forefinger, these orientation features rotate as well, and the difference in tactile sensation immediately alerts the operator to the position of the needle bevel.