Smitten Ventures, Inc.

Omnisonics Medical Technologies, Inc.

Welch Allyn, Inc.

Thomas Industries, Inc.

Hydrocision, Inc.

Advance Transformer Co., a Division of Philips Electronics North America Corporation

David M Fischer

Robyn Sue Fisher

Whitfield Janes Fowler

Jonathan Fischer

Andy H Levine

Robert A Rabiner

Timothy E Moutafis

Bradley A Hare

Lawrence J Stratton

Brad A Hare

Thomas E Dean

William H Henrich

Joseph J Sarofeen

Herbert E Pietsch

Systems and methods of producing a frozen food product include dosing ingredients with a liquefied gas while mixing the ingredients using self-cleaning interlocking beaters. The beaters are optionally also disposed to clean a container in which the ingredients are frozen. The rate and amount of cooling is controlled by measuring the quantity of liquid nitrogen, measuring viscosity of the frozen food product, measuring temperature, and/or the like.

Device and method for dosing cryogenic liquid

Device and method for mixing viscous substances

Pumping cartridges useful for medical and surgical pumping and infusion procedures. In one aspect, a series of pumping cartridges include cylinders and pistons which have a sealing component including a circumferential, flared sealing flange and can be configured to enable the pumping cartridge to generate high liquid pumping pressures. Many of the pumping cartridges can be configured to be detachable from a pump drive unit and disposable after a single use. Some pistons include or at least partially form a valve and/or are relatively movable with respect to a connected piston rod. Valves include a valve seat and a movable sealing element able to create a seal capable of withstanding differences in fluid pressures thereacross of at least about 1,000 psi. The movable sealing element is concave in shape, and may be curved for improved sealing performance. Methods for pumping or infusing a liquid for delivery to the body of a patient or a surgical or medical instrument.

High pressure pumping cartridges for medical and surgical pumping and infusion applications

An ultrasonic medical device comprises an ultrasonic vibration generator that generates vibration along its longitudinal axis. The ultrasonic vibration is transmitted through an ultrasonic coupler and a series of transformer sections that amplify the ultrasonic vibration. A flexible member is coupled to the distal end of the transformer sections, and is thus supplied with a longitudinal vibration at its base by the transformer sections. The flexible member is designed so that it converts the longitudinal vibration into a standing wave that runs along the length of the flexible member. The standing wave produces a series of nodes and anti-nodes along the length of the flexible member. Each of the anti-nodes produces cavitation in fluids in contact with the probe. The cavitation of the fluids causes destruction of adjacent tissue. In this manner, the entire length of the flexible member becomes a working surface that may be utilized for destroying tissue.

Ultrasonic medical device operating in a transverse mode

An electronic frequency inverter circuit receives input electrical power at a lower frequency and energizes a load circuit including gaseous discharge lamps in a range of higher frequencies. First and second semiconductors are operated alternatively by a logic circuit in current mode control such that the switches operate at the high frequency range and the frequency of current in the load circuit varies as the magnitude of said source voltage varies. The load circuit has an impedance which varies with frequency such that the peak amplitude of the load current remains substantially constant despite variations in the magnitude of said source voltage to achieve a desirable crest factor for the lamp current. A high current limit circuit rapidly turns off the switches when excessively high current begins to flow through the switches. Low voltage is supplied in port from the high frequency current. Normal operation is ensured during start-up, for reduced line voltage and for a semiconductor chip embodiment.

High frequency ballast for gaseous discharge lamps

Apparatus for use in sequential color imagery wherein three successive monochrome images are acquired by a video system and then displayed simultaneously upon a screen as a color picture. A flash lamp is used to sequentially illuminate a target through a color wheel and thus create three primary color separated images which are recorded in series by the video camera. The intensity of each image is controlled by varying the output of the lamp during each imaging sequence to balance the primary colors used to recreate an original target upon the television screen so that the video picture accurately duplicates the colors found in the original.

Independent color adjustment for a video system

Growing community of inventors

Waltham, MA, United States of America

David M Fischer