High impulse cardiopulmonary resuscitator
First Claim
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1. A method of performing high impulse cardiopulmonary resuscitation, comprising:
- providing a chamber having an expandable volume and a patient-contacting pad that moves as a function of volume of the chamber;
positioning said chamber with respect to the patient to bring said patient-contacting pad to alignment with the patient'"'"'s chest; and
supplying a controlled quantity of fluid to said chamber during a systolic phase in order to increase said chamber volume by a controlled amount wherein the patient-contacting pad is extended to a compression depth during a rise period and maintained substantially at the compression depth for a hold period that is greater than or equal to said rise period.
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Abstract
A cardiopulmonary resuscitation method and apparatus that is adapted to performing high-impulse CPR includes providing a chamber having an expandable volume and a patient-contacting pad that moves as a function of volume of the chamber and supplying a controlled quantity of a fluid to the chamber. This results in increasing the chamber volume by a controlled amount, thereby compressing the patient'"'"'s chest with the patient-contacting pad during a systolic phase.
97 Citations
51 Claims
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1. A method of performing high impulse cardiopulmonary resuscitation, comprising:
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providing a chamber having an expandable volume and a patient-contacting pad that moves as a function of volume of the chamber;
positioning said chamber with respect to the patient to bring said patient-contacting pad to alignment with the patient'"'"'s chest; and
supplying a controlled quantity of fluid to said chamber during a systolic phase in order to increase said chamber volume by a controlled amount wherein the patient-contacting pad is extended to a compression depth during a rise period and maintained substantially at the compression depth for a hold period that is greater than or equal to said rise period. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A high impulse cardiopulmonary resuscitation apparatus, comprising:
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a chamber having an expandable volume and a patient-contacting pad that moves as a function of volume of the chamber;
a frame including a first portion adapted to be positioned posteriorly of a patient and a second portion supporting said chamber; and
a supply of a controlled quantity of fluid to said chamber during a systolic phase in order to increase said chamber volume by a controlled amount wherein said patient-contacting pad is extended to a compression depth during a rise period and maintained substantially at the compression depth for a hold period that is greater than or equal to said rise period. - View Dependent Claims (18, 19, 20, 21, 22, 23, 25, 26, 27, 28, 29, 30, 31)
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24. The cardiopulmonary resuscitation apparatus in clam 23 wherein said pad moves said distance during a rise period that is approximately 50 milliseconds.
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35. A high impulse cardiopulmonary resuscitation apparatus, comprising:
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a chamber and a piston in said chamber;
a frame including a first portion adapted to be positioned posteriorly of a patient and a second portion supporting the chamber;
a pressure regulator adapted to be supplied with a gas under pressure and producing a regulated pressure at an output of said pressure regulator;
a patient ventilator for applying ventilation to a patient;
a control valve assembly that is operative to selectively connect said pressure regulator output to said chamber to apply chest compressions to the patient; and
a timing circuit to selectively operate said control valve assembly to supply regulated pressure from said output of said pressure regulator to said chamber to move said piston to a compression depth during a rise period and maintain said piston substantially at the compression depth for a hold period that is greater than or equal to said rise period to apply chest compression to a patient during a compression cycle and to selectively supply regulated pressure from said pressure regulator to said patient ventilator during a ventilation cycle. - View Dependent Claims (32, 33, 34, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45)
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46. A high impulse cardiopulmonary resuscitation apparatus operable from a pressure source, said apparatus comprising:
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a chamber and a piston in said chamber;
a frame including a first portion adapted to be positioned posterior of a patient and a second portion supporting the chamber;
a control valve assembly operative to connect said chamber with a pressure source at the beginning of a systolic phase to admit a gas from the pressure source to move said piston toward a patient to initiate a chest compression and to disconnect said chamber from the pressure source and seal the gas in said chamber during the remaining portion of said systolic phase to hold the chest compression; and
a timing circuit to selectively operate said control valve assembly. - View Dependent Claims (47, 48, 49, 50, 51)
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Specification