US 12,213,937 B2
Active compression decompression cardiopulmonary resuscitation chest compression feedback
Gary A. Freeman, Waltham, MA (US); Guy R. Johnson, Gloucester, MA (US); James R. Homuth, Corcoran, MN (US); Keith Lurie, Minneapolis, MN (US); and Anja Metzger, Lake Elmo, MN (US)
Assigned to ZOLL Medical Corporation, Chelmsford, MA (US)
Filed by ZOLL Medical Corporation, Chelmsford, MA (US)
Filed on May 23, 2023, as Appl. No. 18/200,702.
Application 18/200,702 is a continuation of application No. 17/344,343, filed on Jun. 10, 2021, granted, now 11,701,295.
Application 17/344,343 is a continuation of application No. 15/720,837, filed on Sep. 29, 2017, granted, now 11,052,019, issued on Jul. 6, 2021.
Claims priority of provisional application 62/402,688, filed on Sep. 30, 2016.
Prior Publication US 2023/0363976 A1, Nov. 16, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61H 31/00 (2006.01); A61H 31/02 (2006.01); G16H 20/30 (2018.01); G16H 20/40 (2018.01)
CPC A61H 31/005 (2013.01) [A61H 31/02 (2013.01); G16H 20/30 (2018.01); G16H 20/40 (2018.01); A61H 2031/001 (2013.01); A61H 2031/002 (2013.01); A61H 2201/5061 (2013.01); A61H 2201/5064 (2013.01)] 31 Claims
OG exemplary drawing
 
1. An apparatus for automatically providing an active compression decompression (ACD) cardiopulmonary resuscitation (CPR) treatment to a patient in need of emergency assistance, the apparatus comprising:
one or more sensors, wherein at least one sensor of the one or more sensors is configured to be coupled to the patient's chest and to measure force applied during the ACD CPR treatment to the patient's chest, wherein the ACD CPR treatment is applied in a continuous variation of phases, the phases comprising at least an elevated compression phase, a non-elevated compression phase, an elevated decompression phase, and a non-elevated decompression phase; and
one or more processors and a non-transitory computer readable storage medium encoded with a computer program comprising instructions that, when executed, cause the one or more processors to perform operations comprising:
processing the measured force during application of the ACD CPR treatment,
determining, based on the processed force, a neutral point associated with a zero force being exerted on the patient's chest during the ACD CPR treatment,
determining, based on the processed force and the determined neutral point, whether at least one transition point between a current phase and a next phase in the ACD CPR treatment has been reached, and
in response to determining that the transition point between the current phase and the next phase in the ACD CPR treatment has been reached, adjusting one or more application parameters for the ACD CPR treatment.