Bladder event detection for diagnosis of urinary incontinence or treatment of lower urinary tract dysfunction

A system comprising:

• a sensing device adapted to be implanted within a patient's bladder, comprising:
• a pressure sensor comprising a bridge-type circuit adapted to directly detect a pressure within the patient's bladder;
• a wireless transceiver adapted to transmit a signal indicating the pressure within the patient's bladder;
• and
• a battery adapted to provide power to the pressure sensor,
• wherein at least one of the circuit, the wireless transceiver, and the battery is sealed within a biocompatible housing;
• and
• a signal processing device comprising:
• a wireless transceiver adapted to receive the signal indicating the detected pressure within the patient's bladder;
• a processor to execute instructions stored in memory to process the signal and at least:
• filter the signal indicating the detected pressure with a low-pass filter with a cutoff frequency tuned for the patient to provide a filtered signal;
• apply a multi-level discrete wavelet transform to the filtered signal to provide a transformed signal in a wavelet domain;
• apply an adaptive thresholding procedure to the transformed signal in the wavelet domain to detect a bladder event and characterize the bladder event as a voiding contraction event, a non-voiding contraction event, or a non-contraction event based on at least one property of the bladder event according to one or more tunable parameters customized for the patient.