1
Frieder H Ensslin: Bipolar electrosurgical forceps. MDT Corporation, Trask Britt & Rossa, July 3, 1990: US04938761 (380 worldwide citation)

A bioplar electrosurgical forceps carries a thermocouple junction at the distal end of each of two mutually opposed prongs. The junctions are formed by welding a constantan wire directly to the ferrous metal prongs, thereby avoiding the need for electrical isolation.


2
Frieder H Ensslin: Method and apparatus for electrosurgical measurement. MDT Corporation, Trask Britt & Rossa, December 1, 1992: US05167658 (152 worldwide citation)

An improved method and apparatus for measuring the total energy delivered to a patient during an electrosurgical procedure. An electrosurgical target (the patient) is positioned atop a dispersive plate constituting a first electrode. The patient is included in the circuit comprising an electrosurgic ...


3
John C Schmoegner: Chemical sterilizer system. MDT Corporation, Trask Britt & Rossa, June 16, 1992: US05122344 (49 worldwide citation)

A chemical sterilizer system for sterilizing items by vaporizing a liquid chemical sterilant in a sterilizing chamber. Pre-evacuation of the sterilizer chamber enhances the sterilizing activity. Sterilant is injected into the sterilizer chamber from a prefilled shot chamber. Subsequent to the exposu ...


4
Kenneth A Johnson, Steven W White: Dental handpiece sterilizer. MDT Corporation, Trask Britt & Rossa, September 20, 1994: US05348711 (28 worldwide citation)

A dental handpiece sterilizer includes a sterilization chamber with an internal manifold system having outlet connectors into which dental handpieces can be plugged. A sterilant vapor introduced to the manifold flows through the dental handpieces coupled to the manifold and into the interior of the ...


5
Robert A Kolstad, Robert R Runnells, John C Schmoegner: Sterilization method. MDT Corporation, Trask Britt & Rossa, November 27, 1990: US04973449 (24 worldwide citation)

Heat-labile articles are sterilized by subjecting them to pulses of sporicidal vapors and maintaining them for a holding period in contact with such vapors.


6
Leonard L Hallings, Richard W Steiner: Quick release focusing handle for surgical lights. MDT Corporation, Trask Britt & Rossa, October 31, 1989: US04878156 (22 worldwide citation)

A replaceable focusing handle for the focusing shaft of a lighthead includes internal surfaces which register with reaction and locking surfaces of a drive post. A shield carried by the handle prevents inadvertent detachment of the handle.


7
Charles H Feathers, Charles E Ellis: Proportional temperature control of a sterilizer. MDT Corporation, Trask Britt & Rossa, November 17, 1992: US05164161 (22 worldwide citation)

Apparatus and methods for proportional control of heating of a sterilizer chamber are disclosed in the application. A sterilizer chamber has heaters mounted on the walls, a wall temperature sensor and a chamber temperature sensor. The controller is operable to adjust the heat input by turning on the ...


8
Richard W Hanson: Mechanical chair. MDT Corporation, Trask Britt & Rossa, April 11, 1995: US05405188 (22 worldwide citation)

An adjustable chair, such as a dental patient chair includes a chair back pivotally connected to a frame and mechanically linked to a travelling seat assembly so that as the chair back is pivoted, the distance between the back and seat assembly increases as the back is moved to an upright orientatio ...


9
Robert E Shewell: Ultrasonic cleaner. MDT Corporation, Trask Britt & Rossa, April 28, 1992: US05109174 (21 worldwide citation)

An improved ultrasonic cleaner is disclosed. Transducers are attached to a tank to vibrate liquid within the tank. A drive circuit is linked with the transducers to cause the transducers to oscillate at ultrasonic frequencies. The drive circuit includes an oscillator and a counter. The oscillator pr ...


10
Bruce A Sanborn, Shawn E O Hara: Surgical light with touchless switch. MDT Corporation, Trask Britt & Rossa, June 10, 1997: US05637863 (20 worldwide citation)

An operatory light fixture having a touchless switch operatively connected to a lamp disclosed. The touchless switch is constructed to detect a user's hand when positioned in a command location relative to the touchless switch and to respond thereto by operating the lamp. In a preferred embodiment, ...