Patents Assigned to Watermark Medical, Inc.
  • Method for measuring central venous pressure or respiratory effort
    Patent number: 8721555
    Abstract: Photoplethysmography (PPG) is obtained using one red (e.g., 660 nm) and one infrared (e.g., 880 to 940 nm) light emitting diode with a single photo diode in combination with a pressure transducer thereby allowing both CVP and SpO2 to be measured simultaneously. The system also includes sensors capable of measuring position, angle and/or movement of the sensor or patient. Once the PPG signal is acquired, high pass adaptive and/or notch filtering can be used with one element of the filter from the red and infrared signals used to measure the arterial changes needed to compute SpO2 and the other element of the signal can be used to measure CVP changes.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: May 13, 2014
    Assignee: Watermark Medical, Inc.
    Inventors: Philip R. Westbrook, Daniel J. Levendowski, Timothy Zavora, Djordje Popovic, Milenko Cvetinovic, Chris Berka
  • SYSTEMS AND METHODS FOR AUTOMATED PREDICTION OF RISK FOR PERIOPERATIVE COMPLICATIONS BASED ON THE LEVEL OF OBSTRUCTIVE SLEEP APNEA
    Publication number: 20130172687
    Abstract: A system for predicting risk for perioperative complications is described including a user device for receiving a set of risk factors to determine perioperative complications for a patient including patient data useful to determine the likelihood of obstructive sleep apnea. The system also includes an acquisition module to receive data from an obstructive sleep apnea sleep study of the patient. Further a determination module can determine the severity of obstructive sleep apnea for the patient. The system can also include an analysis module having a predictive model that incorporates one or more prediction equations for predicting perioperative complications derived from one or more databases having multiple patient data relevant to predict perioperative complications.
    Type: Application
    Filed: November 16, 2012
    Publication date: July 4, 2013
    Applicant: WATERMARK MEDICAL, INC.
    Inventor: Watermark Medical, Inc.
  • Systems and methods for automated prediction of risk for perioperative complications based on the level of obstructive sleep apnea
    Patent number: 8333696
    Abstract: A system for predicting risk for perioperative complications is described including a user device for receiving a set of risk factors to determine perioperative complications for a patient including patient data useful to determine the likelihood of obstructive sleep apnea. The system also includes an acquisition module to receive data from an obstructive sleep apnea sleep study of the patient. Further a determination module can determine the severity of obstructive sleep apnea for the patient. The system can also include an analysis module having a predictive model that incorporates one or more prediction equations for predicting perioperative complications derived from one or more databases having multiple patient data relevant to predict perioperative complications.
    Type: Grant
    Filed: December 12, 2007
    Date of Patent: December 18, 2012
    Assignee: Watermark Medical, Inc.
    Inventors: Daniel J. Levendowski, Philip R. Westbrook, Chris Berka
  • Hub for collection and wireless transmission of patient data
    Patent number: D685773
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: July 9, 2013
    Assignee: Watermark Medical, Inc.
    Inventors: Frank A. Katarow, David A. Uhen