Resuscitation assistive timer
First Claim
1. A method for stimulating an optimal response in an individual performing cardiopulmonary resuscitation to cue the individual to perform a series of chest compressions followed by a respiration step, said cues being provided at the proper time and for the optimal duration for optimal cardiopulmonary resuscitation comprising the steps of:
- automatically cueing said individual by emitting a predetermined number of chest compression marking signals in the form of uniform intensity short pulses being emitted at a rate which is variable to correspond to a predetermined age, the length of the cueing pulses prescribing the length of the actions to be taken;
automatically cueing said individual by emitting a respiration marking signal in the form of a uniform intensity elongated pulse having a duration matching a desired respiration duration, said elongated pulse being emitted subsequent to said predetermined number of chest compression marking signals, the duration of said elongated pulse being longer than the time occupied by each predetermined chest compression marking signal, the length of the elongated cueing pulse prescribing the length of the action to be taken; and
,automatically repeating said first and second mentioned emitting steps in sequence, whereby optimal resuscitation may be achieved.
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Accused Products
Abstract
A resuscitation-assistive timer is utilized to provide audio or visual signals which act as cues to aid pediatric and adult resuscitations by indicating timing for chest compression and respiratory effort in cardio-pulmonary resuscitation. Short audio and visual signals are utilized to indicate the compression period whereas an elongated audio and/or visual signal is used to indicate the period for respiratory effort. For infants a ratio of five compressions to each respiratory effort is utilized, with the respiratory effort taking approximately two times as long as the cardiac compression. In one embodiment short pulses to signal chest compression are provided by a one-shot multivibrator which is actuated by a series of counted-down pulses from a variable frequency oscillator which may be set in accordance with the age of the individual to whom resuscitation is applied. The counted-down signals may also be further counted down and utilized to actuate a second one-shot multivibrator for the production of an elongated pulse during which respiratory effort is applied to the patient.
46 Citations
15 Claims
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1. A method for stimulating an optimal response in an individual performing cardiopulmonary resuscitation to cue the individual to perform a series of chest compressions followed by a respiration step, said cues being provided at the proper time and for the optimal duration for optimal cardiopulmonary resuscitation comprising the steps of:
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automatically cueing said individual by emitting a predetermined number of chest compression marking signals in the form of uniform intensity short pulses being emitted at a rate which is variable to correspond to a predetermined age, the length of the cueing pulses prescribing the length of the actions to be taken; automatically cueing said individual by emitting a respiration marking signal in the form of a uniform intensity elongated pulse having a duration matching a desired respiration duration, said elongated pulse being emitted subsequent to said predetermined number of chest compression marking signals, the duration of said elongated pulse being longer than the time occupied by each predetermined chest compression marking signal, the length of the elongated cueing pulse prescribing the length of the action to be taken; and
,automatically repeating said first and second mentioned emitting steps in sequence, whereby optimal resuscitation may be achieved. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A timer for stimulating an optimal response in an individual performing cardiopulmonary resuscitation to cue the individual to perform a series of chest compressions followed by a respiration step, said cues being provided at the proper time and for the optimal duration for optimal cardiopulmonary resuscitation, comprising:
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means for automatically cueing said individual by emitting a predetermined number of chest compression marking signals in the form of uniform intensity short pulses each of a duration matching a desired chest compression duration, said short pulses being emitted at a rate which is variable to correspond to a predetermined patient age, the length of the cueing pulses prescribing the length of the actions to be taken; means for automatically cueing said individual by emitting a respiration marking signal in the form of a uniform intensity elongated pulse having a duration matching a desired respiration duration, said elongated pulse being emitted subsequent to said predetermined number of chest compression marking signals, the duration of said elongated pulse being longer than the time occupied by each predetermined chest compression marking signal, the length of the elongated cueing pulse prescribing the length of the action to be taken; and means for automatically actuating said cueing means for repeating the emissions therefrom, whereby optimal resuscitation may be achieved. - View Dependent Claims (8, 9, 10, 11, 12, 13, 14, 15)
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Specification