US 2021/0228253 A1 · MEASURING THE PRESENCE TIME OF A CATHETER IN A PATIENT DURING A MEDICAL PROCEDURE

Abstract

A system including a controller to determine an in-body time of a medical device in a patient during a medical procedure. The controller to: receive signals from at least one temperature sensor; detect insertion of the medical device into the patient by one or more of determining the temperature of the medical device and determining the change of temperature of the medical device with respect to time; increment an in-body time counter to measure the in-body time of the medical device after detecting insertion of the medical device into the patient; detect that the medical device has been removed from the patient by determining that the change of temperature of the medical device with respect to time is negative; and stop incrementing the in-body time counter in response to detecting that the medical device has been removed.

Claims20

Dependent claims

A method of determining an in-body time of a medical device in a body of a patient during a medical procedure, the method comprising:

providing the medical device outside the body of the patient such that a temperature of the medical device is less than a threshold temperature that is between a room temperature of a room in which the medical procedure takes place and a body temperature of the patient;
detecting insertion of the medical device into the patient by one or more of measuring the temperature of the medical device and measuring the change of temperature of the medical device with respect to time;
incrementing an in-body time counter to measure the in-body time of the medical device after detecting insertion of the medical device into the patient;
detecting that the medical device has been removed from the patient by determining that the change of temperature of the medical device with respect to time is negative;
stopping the incrementing of the in-body time counter in response to detecting that the medical device has been removed;
and
displaying the in-body time on the graphical display.

4 more elements

A method of determining a presence time of a catheter in a body of a patient during a cryoablation procedure, the method comprising:

providing the catheter outside the body of the patient such that a temperature of the catheter is less than a threshold temperature that is between a room temperature of a room in which the cryoablation procedure takes place and a body temperature of the patient;
powering-up an intravascular catheter system and entering a ready state of the intravascular catheter system;
inserting the catheter into the patient;
detecting insertion of the catheter into the patient during the ready state of the intravascular catheter system by one or more of measuring the temperature of the catheter and measuring the change of temperature of the catheter with respect to time;
incrementing an in-body time counter at least once per second to measure the in-body time of the catheter after detecting insertion of the catheter into the patient;
determining that the intravascular catheter system is in an ablation state and the temperature of the catheter is less than the threshold temperature and, in response, continuing the incrementing of the in-body time counter;
determining the change of the temperature of the catheter with respect to time is positive during one of a thawing state, an idle state, and a ready state of the intravascular catheter system and, in response, continuing the incrementing of the in-body time counter;
detecting that the catheter has been removed from the patient by determining that the change of temperature of the catheter with respect to time is negative during an idle state and/or a ready state after the ablation state;
stopping the incrementing of the in-body time counter in response to detecting that the catheter has been removed;
and
displaying the in-body time on the graphical display.

8 more elements

An intravascular catheter system, comprising:

a catheter configured to be inserted into a body of a patient, the catheter including at least one temperature sensor configured to measure the temperature of the catheter;
a controller configured to determine an in-body time of the catheter in the body of the patient during a medical procedure, the controller configured to:
receive signals from the at least one temperature sensor;
detect insertion of the catheter into the patient by one or more of determining the temperature of the catheter and determining the change of temperature of the catheter with respect to time;
increment an in-body time counter to measure the in-body time of the catheter after detecting insertion of the catheter into the patient;
detect that the catheter has been removed from the patient by determining that the change of temperature of the catheter with respect to time is negative;
and
stop incrementing the in-body time counter in response to detecting that the catheter has been removed;
and
a graphical display configured to display the in-body time counter on the graphical display.

7 more elements

Dependencies are inferred from the claim text.

Measuring the presence time of a catheter in a patient during a medical procedure

Life of this patent

Measuring the presence time of a catheter in a patient during a medical procedure

Life of this patent

Abstract

Claims20