AUTOMATED CHEST COMPRESSION DEVICE
First Claim
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1. 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, said belt comprising a load distribution section and right belt end and a left belt end;
a motor operably connected to the belt through a drive train, said motor capable of operating the drive train repeatedly to cause the belt to tighten about the thorax of the patient and loosen about the thorax of the patient;
whereinthe drive train comprises a right drive spool and a left drive spool, said right drive spool and left drive spool disposed laterally in the platform, and a linkage operably connecting the motor to said right drive spool and left drive spool; and
the right belt end and the left belt end are releasably attachable to the right drive spool and left drive spool, respectively, at attachment points accessible from anterior or lateral sides of the platform, such that the right belt end and left belt end may be attached to the right drive spool and the left drive spool while the platform is disposed under the patient.
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Abstract
A device for compressing the chest of a cardiac arrest victim.
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Citations
62 Claims
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1. A device for compressing a chest of a patient comprising:
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a platform for placement under a thorax of the patient; a compression belt adapted to extend over an anterior chest wall of the patient, said belt comprising a load distribution section and right belt end and a left belt end; a motor operably connected to the belt through a drive train, said motor capable of operating the drive train repeatedly to cause the belt to tighten about the thorax of the patient and loosen about the thorax of the patient;
whereinthe drive train comprises a right drive spool and a left drive spool, said right drive spool and left drive spool disposed laterally in the platform, and a linkage operably connecting the motor to said right drive spool and left drive spool; and the right belt end and the left belt end are releasably attachable to the right drive spool and left drive spool, respectively, at attachment points accessible from anterior or lateral sides of the platform, such that the right belt end and left belt end may be attached to the right drive spool and the left drive spool while the platform is disposed under the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 30)
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14. A method of performing chest compression on a patient, said method comprising the steps of:
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providing a device for compressing a chest of a patient, said device 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, said belt comprising a load distribution section and right and left belt ends; a drive train operably connected to the belt for repeatedly tightening and loosening the belt around the chest of the patient; a motor operably connected to the belt through a drive train, said motor capable of operating the drive train repeatedly to cause the belt to tighten about the thorax of the patient and loosen about the thorax of the patient;
whereinthe drive train comprises a right drive spool and a left drive spool, said right drive spool and left drive spool disposed laterally in the housing, and a linkage operably connecting the motor to said right drive spool and left drive spool; and the right belt end and the left belt end are releasably attachable to the right drive spool and left drive spool, respectively, at attachment points accessible from anterior or lateral sides of the platform, such that the right belt end and left belt end may be attached to the right drive spool and the left drive spool while the platform is disposed under the patient; placing the patient on the platform, with the anterior side of the platform in contact with the thorax of the patient; thereafter, while the patient is disposed on the platform, attaching the right belt end to the right drive spool, and attaching the left belt end to the left drive spool; and initiating operation of the device to cause repeated cycles of tightening and loosening of the belt about the thorax of the patient. - View Dependent Claims (15, 16, 17, 18, 62)
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19. A device for compressing a chest of a patient comprising:
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a platform for placement under a thorax of the patient, characterized by an anterior/posterior axis corresponding to the anterior/posterior axis of a patient on which the device is used, and characterized by an inferior/superior axis corresponding to the inferior/superior axis of a patient on which the device is used; a compression belt adapted to extend over an anterior chest wall of the patient, said belt comprising a load distribution section, and right and left belt ends; right and left drive spools laterally displaced from an inferior/superior centerline of the platform, said right and left drive spools operably connected to the right and left belt ends such that rotation of the right and left drive spools results in pulling the right and left belt ends posteriorly, for repeatedly tightening and loosening the belt around the chest of the patient; a motor operably connected to the right and left drive spools, through a drive train, said motor operable to rotate the right and left drive spools. - View Dependent Claims (20, 21, 23, 24, 25, 26, 28, 29)
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27. The device of 26, wherein the control system is further programmed to control operation of the compression belt to achieve a predetermined compression depth as determined by the compression monitor.
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31. A device for compressing a chest of a patient comprising:
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a platform for placement under a thorax of the patient; a compression belt adapted to extend over an anterior chest wall of the patient; a motor operably connected to the belt through a drive train, said motor capable of operating the drive train repeatedly to cause the belt to tighten about the thorax of the patient and loosen about the thorax of the patient;
whereina control system operable to control operation of the motor to tighten and loosen the compression belt in repeated cycles of compression about the thorax of the patient, wherein said control system is further operable to pre-tension the compression belt, prior to performing the repeated cycles of compression, by operating the motor to loosen the belt, and then operating the motor to tighten the belt until the belt is tightened to a slack take-up position. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42)
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43. A device for compressing a chest of a patient comprising:
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a platform for placement under a thorax of the patient; a compression belt adapted to extend over an anterior surface of the chest of the patient; a drive train operably connected to the belt for repeatedly tightening and loosening the belt around the chest of the patient; a motor operably connected to the drive train, said motor capable of operating the drive train to cause the belt to tighten about the chest of the patient and loosen about the chest of the patient in repeated compression cycles; a brake for stopping and holding the drive train during a compression cycle, said brake comprising a park gear non-rotatably fixed to a rotating component of the drive train or motor, and a parking pawl disposed in relation to the park gear such that it can be moved into interfering contact with the park gear during a compression cycle. - View Dependent Claims (44, 45, 46, 47, 48, 49, 50)
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51. A device for compressing a chest of a patient comprising:
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a platform for placement under a thorax of the patient; a compression belt adapted to extend over an anterior surface of the chest of the patient, said belt comprising right and left belt ends; right and left drive spools laterally displaced from an inferior/superior centerline of the platform, said right and left drive spools operably connected to the right and left belt ends such that rotation of the right and left drive spools results in spooling of the right and left belt ends upon the corresponding drive spool, for repeatedly tightening and loosening the belt around the chest of the patient; a motor operably connected to the right and left drive spools, through a drive train, said motor operable to rotate the right and left drive spools; wherein the platform is characterized by an inferior/superior axis corresponding to the inferior/superior axis of a patient on which the device is used, and an inferior/superior centerline, and characterized by a medial/lateral axis corresponding to the medial/lateral axis of a patient on which the device is used, wherein; the motor and drive train are disposed in a first region of the device along the inferior/superior axis, and the drive spools extend into a second region of the device along the inferior/superior axis, said second region displaced from the first region, and the drive spools are spaced laterally from the inferior/superior centerline of the device, thereby defining a radiolucent space within the housing devoid of radiopaque components; such that said radiolucent space is disposed, when the device is installed under a patient with the compression belt spanning the anterior surface of the chest of the patient, under the heart of the patient.
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52. A method of performing chest compression on a patient, said method comprising the steps of:
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providing a device for compressing a chest of a patient, said device 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, said belt being a two-piece belt comprising a right belt piece with a right belt end and a left belt piece with a left belt end; a drive train configured for connection to the belt for repeatedly tightening and loosening the belt around the chest of the patient; a motor operably connected to the drive train, said motor capable of operating the drive train repeatedly to cause the belt to tighten about the thorax of the patient and loosen about the thorax of the patient;
whereinthe drive train comprises a right drive spool and a left drive spool, said right drive spool and left drive spool disposed laterally in the housing, and a linkage operably connecting the motor to said right drive spool and left drive spool; and the right belt end and the left belt end are releasably attachable to the right drive spool and left drive spool, respectively, at attachment points accessible from anterior or lateral sides of the platform, such that the right belt end and left belt end may be attached to the right drive spool and the left drive spool while the platform is disposed under the patient; placing the patient on the platform, with the anterior side of the platform in contact with the thorax of the patient; attaching the right belt end to the right drive spool, and attaching the left belt end to the left drive spool; securing the right belt to the left belt over the thorax of the patient; and initiating operation of the device to cause repeated cycles of tightening and loosening of the belt about the thorax of the patient. - View Dependent Claims (53, 54, 55, 56, 57, 58, 59, 60, 61)
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Specification