Allan I Krauter, Fred C Cope, John H Bean: Biopsy seal. Welch Allyn, Bruns and Wall, March 17, 1987: US04649904 (204 worldwide citation)

A disposable seal is provided for a luer lock end fitting, e.g. for a biopsy channel of an endoscope. The fitting has a tubular luer lock device and a retaining ring surrounding the tubular device. The seal is unitarily molded of a soft elastomer and has a double seal arrangement formed of an apertu ...

Steven R Slawson, Ronald A Hauptli, Chris R Roberts, Allan I Krauter, Ervin Goldfain: Focusing mechanism. Welch Allyn, Wall Marjama & Bilinsk, May 21, 2002: US06390625 (142 worldwide citation)

A focusing mechanism for an optical instrument includes an eyepiece having at least one lens element retained within an eyepiece housing, a stationary carrier for retaining the eyepiece, and a rotatable thumb wheel. A pair of levers operatively connect the eyepiece housing with the rotatable thumb w ...

Jimmie B Allred III, Allan I Krauter: Force relieving, force limiting self-adjusting steering for borescope or endoscope. Welch Allyn, Wall and Roehrig, November 29, 1988: US04787369 (127 worldwide citation)

A self-adjusting mechanism ensures that the collective force on the steering cables of an endoscope or borescope is limited or relieved when a predetermined force is reached. The mechanism includes a frame, a slider that moves on the frame and restrains the proximal ends of the steering cable sheath ...

Allan I Krauter, Robert L Vivenzio: Proximal steering cable adjustment. Welch Allyn, Harris Beach & Wilcox, November 1, 1994: US05359994 (94 worldwide citation)

A steering control unit for a cable-actuated bending neck of an elongated probe has a cable slack adjustment mechanism disposed on the proximal end of the unit. This permits field service of the probe and allows for a watertight housing. The adjustment mechanism employs hollow adjuster screws that a ...

Chris R Roberts, Corinn C Fahrenkrug, Allan I Krauter, Shawn A Briggman, Michael A Pasik, Peter J Davis, John R Strom, Charles N Stewart, Jon R Salvati, Robert L Vivenzio: Electrical adapter for medical diagnostic instruments using LEDs as illumination sources. Welch Allyn, Marjama & Bilinski, October 2, 2007: US07276025 (84 worldwide citation)

An adapter for permitting a medical diagnostic instrument having an illumination source including at least one LED (light emitting diode) to be used with a power supply normally configured for use with a diagnostic instrument having at least one incandescent lamp as an illumination source. The adapt ...

Allan I Krauter, Robert L Vivenzio: Elastomer-ePTFE biopsy channel. Welch Allyn, Wall and Roehrig, October 24, 1989: US04875468 (78 worldwide citation)

A biopsy channel for a borescope or endoscope is formed of a thin-wall elastomeric tubular sleeve or sheath that is interference fitted over an expanded polytetrafluoroethylene (Teflon) liner. An end fitting can be formed of a metal or plastic tube, preferably with an internal chamfer. This can be s ...

Raymond A Lia, Allan I Krauter: Self-adjusting steering mechanism for borescope, endoscope, or guide tube. Welch Allyn, Wall and Roehrig, August 9, 1988: US04762118 (74 worldwide citation)

In a cable-steerable endoscope, borescope, or guide tube in which opposing cables are displaced to deflect the tip of the instrument, a self-adjusting mechanism in the control section ensures that a maximal differential force and a minimal total force is applied to the two steering cables. The self- ...

Allan I Krauter: Hydraulic muscle pump. Welch Allyn, Wall and Roehrig, October 16, 1990: US04962751 (71 worldwide citation)

This invention comprises four hydraulic muscle pumps connected to four hydraulic dynamic muscles in hermetically sealed pairs to transfer tensive forces from a local to a remote location for use in actuating the articulation section of a borescope or endoscope.

Allan I Krauter, Robert L Vivenzio: Connector for optical sensor. Welch Allyn, Wall and Roehrig, March 5, 1991: US04998182 (68 worldwide citation)

A connector is provided for a highly miniaturized integrated circuit imager that is supported in a sealed package that has a transparent distal plate and a plurality of connector pins that extend proximally from the package. The connector pins are trimmed short and metal coil springs are disposed on ...

Allan I Krauter, Robert L Vivenzio: Biopsy channel for endoscope. Welch Allyn, Bruns and Wall, December 22, 1987: US04714075 (62 worldwide citation)

A biopsy channel for use in the insertion tube of an endoscope or borescope having a reinforced length that passes through the steering section of the tube which can be bent to a small radius without collapsing or losing its circularity. The tubing is preferably a heat softenable thermoplastic and t ...