PORTABLE AUTOMATIC CHEST COMPRESSION DEVICES

• US 20140236054A1
• Filed: 04/30/2014
• Published: 08/21/2014
• Est. Priority Date: 10/14/2003
• Status: Active Grant

• Current Assignee: Zoll Circulation Incorporated (Asahi Kasei Corporation)
• Original Assignee: Zoll Circulation Incorporated (Asahi Kasei Corporation)
• Inventors: Jensen, James O., Rappoport, Vladimir, Mastromattei, Robert
• Granted Patent: US 9,398,998 B2
• Time in Patent Office: Days
• US Class Current: 601/41
• CPC Class Codes: A61H 2201/018 By limiting the applied torque or force
• CPC Class Codes: A61H 2201/0214 cooled
• CPC Class Codes: A61H 2201/025 by direct air flow on the patient's body
• CPC Class Codes: A61H 2201/5007 computer controlled
• CPC Class Codes: A61H 31/00 Artificial respiration or heart stimulation, e.g. heart massage artificial respiration by treatment with gas or air, e.g. mouth-to-mouth respiration A61M16/00; applying electric currents by contact electrodes for stimulation, e.g. heart pace-makers A61N1/36 ; teaching or training models, demonstration models for medical purposes G09B23/288
• CPC Class Codes: A61H 31/006 Power driven
• CPC Class Codes: A61H 31/008 Supine patient supports or bases, e.g. improving air-way access to the lungs
• CPC Class Codes: Y10S 601/06 Artificial respiration conforming to shape of torso

Abstract

An automated chest compression device has a housing for supporting a patient and a motor within the housing. A conical drive spool is operatively connected to the motor and a cable, is operatively connected to the conical drive spool. The cable is adapted to extend at least partially around the chest of the patient. A controller is operable to control the motor to compress the chest to variable thresholds.

Claims

1. An automated chest compression device comprising:

a housing for supporting a patient;

a motor within the housing;

a conical drive spool operatively connected to the motor;

a cable, operatively connected to the conical drive spool and adapted to extend at least partially around the chest of the patient; and

a controller operable to control the motor to compress the chest to variable thresholds.

2. The automated chest compression device of claim 1 wherein the cable has a first end and a second end and the automated chest compression device further comprises:

a first pull strap secured to the first end of the cable; and

a second pull strap secured to the second end of the cable, wherein the cable engages the conical drive spool.

3. The automated chest compression device of claim 1 wherein the cable has a first end and a second end and the automated chest compression device further comprises:

a first pull strap and load distribution secured to the first end of the cable; and

a second pull strap and load distribution section secured to the second end of the cable, wherein the cable engages the conical drive spool.

4. The automated chest compression device of claim 3 further comprising:

a compression bladder placed between the load distribution sections and the patient'"'"'s sternum.

5. The automated chest compression device of claim 1 wherein the conical drive spool further comprises:

a spooling profile to take advantage of a speed versus torque trade-off of the motor.

6. The automated chest compression device of claim 1 wherein the conical drive spool further comprises:

a base and a peak wherein the base of the conical drive spool has a larger diameter than the peak;

wherein the cable wraps around the base of the conical drive spool, thereby creating a large mechanical advantage when starting a compression and the cable then spools around the conical drive spool, proceeding towards the peak;

wherein conical drive spool applies more torque to the cable as the cable spools around the smaller diameter portions of the conical drive spool, thereby applying a greater force to the patient towards the end of a compression when the chest'"'"'s resistance to the compression is highest.

8. A method for repetitively compressing the chest of a patient comprising the steps:

providing the chest compression device of claim 3;

placing the patient on the housing;

securing the load distribution section of the first pull strap to the load distribution section of the second pull strap over the patient'"'"'s chest; and

repetitively tightening the cable around the base of the conical drive spool, thereby creating a large mechanical advantage when starting a compression and the cable then spools around the conical drive spool, proceeding towards the peak to compress the chest of the patient.

9. The method of claim 8 further comprising the step:

placing a compression bladder between the load distribution sections and the patient'"'"'s sternum.

7. A method of performing chest compressions on a patient comprising the steps:

providing an automated chest compression device comprising;

a housing for supporting a patient;

a motor within the housing;

a conical drive spool operatively connected to the motor, the conical drive spool having a base and a peak wherein the base of the conical drive spool has a larger diameter than the peak;

a cable, operatively connected to the base of the conical drive spool and adapted to extend at least partially around the chest of the patient; and

a controller operable to control the motor to compress the chest to variable thresholds;

placing the patient on the housing;

securing the cable about the chest of the patient; and

repetitively tightening the cable around the base of the conical drive spool, thereby creating a large mechanical advantage when starting a compression and the cable then spools around the conical drive spool, proceeding towards the peak to compress the chest of the patient.