Allan I Krauter, Fred C Cope, John H Bean: Biopsy seal. Welch Allyn, Bruns and Wall, March 17, 1987: US04649904 (193 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 (113 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 ...

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 (77 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: Proximal steering cable adjustment. Welch Allyn, Harris Beach & Wilcox, November 1, 1994: US05359994 (75 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 ...

Allan I Krauter, Robert L Vivenzio: Elastomer-ePTFE biopsy channel. Welch Allyn, Wall and Roehrig, October 24, 1989: US04875468 (74 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 (69 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 (62 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: Biopsy channel for endoscope. Welch Allyn, Bruns and Wall, December 22, 1987: US04714075 (59 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 ...

Allan I Krauter, Robert L Vivenzio: Connector for optical sensor. Welch Allyn, Wall and Roehrig, March 5, 1991: US04998182 (57 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 ...

Click the thumbnails below to visualize the patent trend.