Nxstage Medical, Inc.

Harvard College

The General Hospital Corporation

University of Massachusetts

Amanda Wozniak

James M Brugger

Jeffrey H Burbank

William J Schnell

Scott W Newell

Goetz Friederichs

Orlando Soto

Joseph E Turk, Jr

Joseph Rausa

Hani Sallum

James Niemi

David Paydarfar

Riccardo Barbieri

Premananda Pai Indic

Hani M Sallum

John Paul Osborne

Ruby Kandah

A conductivity measurement device includes first and second conductivity measurement flow channels positioned in a fluid circuit and fluidly linked for fluid flow between the first and second conductivity measurement flow channels. A controller having a current source connected to the first and second conductivity channels applies alternating voltages at frequencies that are different, each being respective to one of the first and second conductivity cells.

Treatment fluid devices methods and systems

Embodiments include a consumable medical device comprises a rigid cartridge to which a film is adhered to form a fluid channel and a damper chamber. A portion of the film forming the damper chamber has a wave-like shape adapted to roll onto a tip of a damper. The damper has a plunger to minimize peristaltic pressure in the channel. The cartridge may include conductivity measurement channels. Crosstalk may be minimized by using different frequencies or time division for reading the channels. A stable dialysate concentrate containing sodium lactate may be used or generated with the system. The concentrate may be formed to higher concentration than feasible with a single component concentrate by forming two containers of concentrate, each containing a fraction of a total quantity of sodium lactate required for a predefined number of dialysis.

Systems and methods are disclosed to monitor physiological for the occurrence of life threatening events and to apply stimulation to prevent the occurrence of said life-threatening events. Systems and methods for applying the stimulation are also disclosed. These systems include applying the stimulation through via a mattress having a passive section and an active section, a plurality of focal stimulators, and/or an array to apply the stimulation are also disclosed. These devices include a mattress with an active region and a passive region, a stimulating array do deliver targeted stimulation, and a plurality of stimulators to apply focused stimulation.

Systems and methods for inhibiting apneic events

Growing community of inventors

Somerville, MA, United States of America

Amanda Wozniak