A method of preventing occlusion of an intravenous catheter , comprising: determining a baseline electrical signal by transmitting, via a transmitter , third energy waves along a length of an an unoccluded intravenous catheter at a first frequency; converting, a portion of the third energy waves that are reflected back from the unoccluded intravenous catheter to a baseline electrical signal; determining an electrical signal by transmitting, via the transmitter, first energy waves along a length of an occluded intravenous catheter at the first frequency; converting, via the transducer, a portion of the third energy waves that are reflected back from the occluded intravenous catheter to a corresponding electrical signal; receiving the corresponding electrical signal and the baseline electrical signal at a processor coupled to the transducer ; comparing the corresponding electrical signal to the baseline electrical signal to determine a difference between the corresponding electrical signal and the baseline electrical signal; and characterized by in response to the difference between the corresponding electrical signal and the baseline electrical signal being below a threshold value, transmitting, via the transmitter or another transmitter , second energy waves along the length of the intravenous catheter at a second frequency greater than the first frequency, wherein the second energy waves are configured to reduce formation of blood clots within the intravenous catheter, and wherein the one or more transmitters are prevented from transmitting the second energy waves along the length of the intravenous catheter at the second frequency in response to a difference between the corresponding electrical signal and the corresponding baseline electrical signal meeting the threshold value. determining a baseline electrical signal by transmitting, via a transmitter , third energy waves along a length of an an unoccluded intravenous catheter at a first frequency; converting, a portion of the third energy waves that are reflected back from the unoccluded intravenous catheter to a baseline electrical signal; determining an electrical signal by transmitting, via the transmitter, first energy waves along a length of an occluded intravenous catheter at the first frequency; converting, via the transducer, a portion of the third energy waves that are reflected back from the occluded intravenous catheter to a corresponding electrical signal; receiving the corresponding electrical signal and the baseline electrical signal at a processor coupled to the transducer ; comparing the corresponding electrical signal to the baseline electrical signal to determine a difference between the corresponding electrical signal and the baseline electrical signal; and characterized by in response to the difference between the corresponding electrical signal and the baseline electrical signal being below a threshold value, transmitting, via the transmitter or another transmitter , second energy waves along the length of the intravenous catheter at a second frequency greater than the first frequency, wherein the second energy waves are configured to reduce formation of blood clots within the intravenous catheter, and wherein the one or more transmitters are prevented from transmitting the second energy waves along the length of the intravenous catheter at the second frequency in response to a difference between the corresponding electrical signal and the corresponding baseline electrical signal meeting the threshold value. <EOS>