Abstract: An automated sphygmomanometer which utilizes quality algorithms to stop any further analysis at various points during a blood pressure determination because of corrupted data. If the data is so corrupted that giving blood pressure numbers is inappropriate, this is recognized and the determination stopped. The quality algorithms make a decision to get more data with the hope of improving the blood pressure estimation. The request for data occurs both before and/or after a curve fitting process, if such a process is utilized. Some information is also provided to the cuff pressure control function about which pressure levels would be best for gathering the additional data. The quality algorithms are also used to make a decision as to whether it is appropriate to publish the blood pressure values obtained. Control parameters (weights) may be set within the blood pressure algorithm to help with other aspects of the NIBP algorithm and improve the quality of the final published numbers.
August 18, 1999
Date of Patent:
March 19, 2002
Critikon Company, LLC
Bruce Friedman, Lawrence T. Hersh, Richard Medero
Abstract: A conical blood pressure cuff having an integrated inflatable bladder is provided. The cuff is formed of a flexible compliant laminate having at least first and second layers which are impermeable to air. The cuff is formed having first and second arcuate edges, the second edge having a smaller radius than the first edge. Radial edges extend between the first and second arcuate edges. An air-tight rectangular pocket forms the inflatable bladder between the first and second layers. A tube is provided communicating with the interior of the pocket formed between the laminated layers. Air may be pumped the through the tube to inflate the bladder. Similarly, the bladder may be deflated by removing air from the pocket through the tube.
Abstract: A reconfigurable user interface for a modular patient monitor which selectively populates menus for operator selection based on the parameters which are available at any given time. Due to event processing, when a parameter module is added or removed from the system, the reconfigurable user interface is updated immediately to reflect the addition or subtraction of the associated parameter. A flash box in each menu provides shortcuts to the most likely menu option in response to asynchronous events such as alarms and the like. The flash box also assists the operator with the particular steps that must be followed to properly setup or operate a particular feature of the system. Since the menus are not modal, an operator may navigate the menus without making any selections or changing the state of the device.
March 4, 1998
Date of Patent:
February 13, 2001
Critikon Company, LLC
Kathy K. Smith, Richard Medero, Edward V. Cruz, David W. Hoard, Brian L. Pate, Robert S. Wallace, III
Abstract: A failsafe supervisor system for a processing module of a modular multi-parameter patient monitor which detects a module error or malfunction, places such module in a safe state, and alerts the operator to improper operation of the patient monitor module processor hardware or software. Upon detection of a hardware or software error, an inconsistent system/module time-base check, or other malfunctions during module operation, the impaired parameter module and its associated parameter data gathering apparatuses are powered down and the patient monitor system electrically isolates the impaired module in a failsafe manner to a safe state while permitting other parameter modules to continue with their normal operation. The failsafe supervisor system preferably includes a watchdog timer and discrete logic incorporated with the parameter module's microprocessor control system.