Dennis Arsenault

US Patent:

D652923, Jan 24, 2012

Filed:

Oct 1, 2010

Appl. No.:

29/376077

Inventors:

John Kennedy - Lowell MA, US
Douglas Sjostrom - Tewksbury MA, US
Dennis Arsenault - Ashland MA, US

Assignee:

Viking Systems, Inc. - Westborough MA

International Classification:

2402

US Classification:

D24138

US Patent:

D676387, Feb 19, 2013

Filed:

Oct 1, 2010

Appl. No.:

29/376073

Inventors:

John Kennedy - Lowell MA, US
Douglas Sjostrom - Tewksbury MA, US
Dennis Arsenault - Ashland MA, US

Assignee:

Viking Systems, Inc. - Westborough MA

International Classification:

1303

US Classification:

D131372

US Patent:

53599926, Nov 1, 1994

Filed:

Oct 20, 1992

Appl. No.:

7/963356

Inventors:

Koichiro Hori - Framingham MA
Dennis Arsenault - Ashland MA

Assignee:

Linvatec Corporation - Largo FL

International Classification:

A61B 100

US Classification:

128 4

Abstract:

An endoscope coupler includes a sealed chamber and a lens assembly longitudinally movable within the chamber for focusing an image to be received by a video camera. Spaced permanent drive magnets located exteriorly of the chamber are magnetically coupled with respective permanent driven magnets secured to the lens assembly in the chamber for moving the lens assembly simultaneously with movement of the drive magnets. A focusing ring is rotatable but not longitudinally movable about the chamber and translates the drive magnets and, therefore, the driven magnets and lens assembly longitudinally in response to focusing ring rotation. Frictional retaining rings disposed between the chamber and the focusing ring resist movement of the focusing ring to provide enhanced tactile response when the focusing ring is manually moved by an operator.