Rfid-based determination of compression and motion during cpr chest compression
AssigneePhysio-Control, Inc.
InventorsDaniel Conan Perreault, Isabelle Banville, Gregory T. Kavounas, Robert P. Marx, Jr.
Life of this patent
Estimating the term…
Abstract
During cardiopulmonary resuscitation (CPR), compressions are delivered to a patient. The CPR compression includes a depth of compression. A medical device uses radio frequency identification (RFID) technology to determine the depth of compression.
Claims20
A medical device that assists with providing feedback for the delivery of cardiopulmonary resuscitation (CPR) compressions to a patient, the medical device comprising:
- a radio frequency identification (RFID) tag;
- an RFID antenna,
- one of the RFID tag or the RFID antenna being configured to be in a fixed spatial relation with one of a front point that corresponds to a chest of the patient or a back point that corresponds to a back of the patient, and the other of the RFID tag or RFID antenna is configured to be in a fixed spatial relation with the other of the RFID tag or the RFID antenna;
- and
- a RFID reader that is configured to drive the antenna to repeatedly transmit a query signal to the RFID tag,
- in which the RFID antenna is further configured to receive a response signal from the RFID tag and the RFID reader is further configured to infer a depth of compression of a CPR compression between the front point and the back point based upon the response signal;
- an output unit configured to communicate the inferred depth at any moment in time of compression of the CPR compression.
A method that assists with delivery of cardiopulmonary resuscitation (CPR) compression to a patient by a medical device, the method comprising:
- transmitting one or more query signals to a constellation of one or more RFID tags, the one or more RFID tags being in a fixed spatial relation with one of a front point that corresponds to a chest of the patient or a back point that corresponds to a back of the patient;
- receiving one or more response signals from the constellation;
- measuring the one or more response signals;
- based at least in part upon the one or more measured response signals to the one or more query signals, inferring a depth of compression of a CPR compression between the front point and the back point;
- and
- outputting an indication of the inferred depth of compression.
An article comprising:
- a storage medium, the storage medium having instructions stored thereon, wherein when the instructions are executed by at least one medical device configured that assists with delivery of cardiopulmonary resuscitation (CPR) to a patient, they result in:
- transmitting a query signal to a RFID tag, the RFID tag being in a fixed spatial relation with one of a front point that corresponds to a chest of the patient or a back point that corresponds to a back of the patient;
- receiving a response signal from the RFID tag;
- measuring the response signal;
- based at least in part upon the measured response signal to the query signal, inferring a depth of compression of a CPR compression between the front point and the back point based;
- and
- outputting an indication of the inferred depth of compression.
An article in accordance with claim 177, wherein when the instructions are executed they result in:
- determining a distance from a RFID antenna to each RFID tag in a constellation of RFID tags of a backboard, the constellation includes a reference RFID tag;
- determining a position of the RFID antenna to the reference RFID tag;
- determining a lateral offset between the backboard and the RFID antenna;
- and
- based on the determined distance and determined position, compensating for the determined lateral offset.
Dependencies are inferred from the claim text.