spring release unit, said spring release unit providing a predetermined springy release force and linked to said lift cord take-up unit, said lift cord take-up unit being fixedly connected to the lift cords of the Venetian blind to impart a roll-up prestress to the lift cords of the Venetian blind for taking up the lift cords. The synchronizing transmission unit is coupled to the lift cord take-up units of said at least two take-up reel sets, for enabling the lift cord take-up units to be moved synchronously. The positioning device set comprises a retaining member provided between said take-up reel sets and moved between an engagement position where said retaining member engages said take-up reel sets to offset said roll-up prestress and to keep the lift cords ofThis invention relates to an apparatus for monitoring patient respiration and heartbeat, and for processing representative signals received from the patient for the purpose of evaluating the condition of the patient's health; specifically, the invention provides an evaluation of the patient's respiration to detect the condition known as apnea, and to reliably detect this condition while rejecting false indications of the condition.
The medical term "apnea" means cessation of respiration or breathing. The apnea condition has become associated in recent years with the "sudden infant death syndrome", wherein a disturbing pattern of early deaths of apparently healthy infants has been noted. Studies and research programs have been conducted by agencies of the Federal Government and others in an attempt to identify the cause of sudden infant death syndrome, and