Automated chest compression device

Abstract

A device for compressing the chest of a cardiac arrest victim.

1 - 22 . (canceled) 
     
     
         23 . A device for compressing a chest of a patient comprising:
 a platform for placement under a thorax of the patient;   a compression belt adapted to extend over an anterior chest wall of the patient, the compression belt comprising a right belt end and a left belt end;   a motor operably coupled to the compression belt through a drive train, the motor operatively associated with the drive train to repeatedly cause the compression belt to tighten and loosen, the drive train comprising a right drive spool and a left drive spool, the right drive spool and left drive spool disposed laterally in the platform and operatively coupled to the respective right belt end and left let end; and   sensors configured to determine a compression parameter achieved by the compression belt.   
     
     
         24 . The device according to  claim 23 , wherein at least one sensor is an accelerometer. 
     
     
         25 . The device according to  claim 24 , wherein the at least one sensor is incorporated into the compression belt. 
     
     
         26 . The device according to  claim 25 , wherein at least one sensor is disposed in the platform. 
     
     
         27 . The device according to  claim 23 , wherein the right belt end and the left belt end are releasably attachable to the right drive spool and the left drive spool, respectively, at attachment points accessible from anterior or lateral sides of the platform, such that the attachment points are positioned for releasable attachment of the right belt end and the left belt end while the platform is disposed under the patient. 
     
     
         28 . The device according to  claim 23 , wherein at least one sensor is a magnetic field based sensor. 
     
     
         29 . The device according to  claim 23 , wherein the sensors are operatively coupled to the belt such that the sensors detect a compression depth of the compression belt caused by actuation of the left and right drive spools. 
     
     
         30 . The device according to  claim 23 , further comprising a controller configured to receive a signal from the sensors corresponding to a compression depth measurement to control operation of the device. 
     
     
         31 . The device according to  claim 23 , wherein the drive train includes at least one linkage rotatably interconnecting the motor to the right drive spool and the left drive spool, wherein the at least one linkage is configured to impart rotational output of the motor to the right drive spool and left drive spool, wherein the right and left drive spools are configured to drive the compression belt. 
     
     
         32 . A device for compressing a chest of a patient comprising:
 a platform for placement under a thorax of the patient;   a compression belt adapted to extend over an anterior chest wall of the patient;   right and left drive spools laterally displaced from an inferior-superior centerline of the platform, the right and left drive spools operatively coupled to the compression belt to enable repeated tightening and loosening of the compression belt, wherein the compression belt is detachable from the right and left drive spool while the platform is disposed under the patient;   a motor rotatably interconnected to the right and left drive spools via at least one coupling portion of a drive train, wherein the at least one coupling portion is configured to transfer rotation driven by the motor to rotate the right and left drive spools; and   at least one sensor operatively coupled to the compression belt to measure compression depth achieved by the compression belt.   
     
     
         33 . The device according to  claim 32 , wherein the at least one sensor is an accelerometer. 
     
     
         34 . The device according to  claim 32 , further comprising a controller, wherein the at least one sensor is configured to provide feedback to the controller. 
     
     
         35 . The device according to  claim 34 , wherein the at least one sensor is a magnetic field based sensor. 
     
     
         36 . The device according to  claim 34 , wherein the at least one sensor is incorporated into the belt. 
     
     
         37 . The device according to  claim 34 , wherein the at least on sensor is a first sensor incorporated into the belt and a second sensor is disposed in the platform. 
     
     
         38 . The device according to  claim 34 , wherein the controller is configured to control operation of the motor to tighten and loosen the compression belt in repeated cycles of compression about the thorax of the patient. 
     
     
         39 . The device according to  claim 37 , wherein the controller is configured to control operation of the motor to achieve a predetermined compression depth. 
     
     
         40 . The device according to  claim 38 , wherein the controller is configured to pre-tension the compression belt prior to performing the repeated cycles of compression, by first operating the motor to loosen the compression belt, and then operating the motor to tighten the compression belt until the compression belt is tightened to a slack take-position. 
     
     
         41 . A device for compressing a chest of a patient comprising:
 a platform for placement under a thorax of the patient;   a compression portion for positioning over an anterior chest wall of the patient;   a motor operably coupled to the compression portion through a drive train such that actuation of the motor causes the compression portion to compress the anterior wall of the patient, and   first and second sensors configured to determine a compression parameter achieved by the compression portion, wherein the first sensor is coupled to the platform and the second sensor is coupled to the compression portion.   
     
     
         42 . The device according to  claim 41 , wherein the first and second sensors are accelerometers. 
     
     
         43 . The device according to  claim 42 , wherein the first and second sensors are configured to detect a compression depth of the compression portion caused by actuation of the motor. 
     
     
         44 . The device according to  claim 41 , wherein the compression portion is a compression belt adapted to extend over an anterior chest wall of the patient.