Urinary catheter system for diagnosing a physiological abnormality such as stress urinary incontinence
A system evaluates a patient for a physiological abnormality. A urinary catheter is insertable within a patient's bladder and has a first pressure sensor for measuring bladder pressure and a second pressure sensor for measuring mid-urethral pressure at the mid-urethral sphincter. A processing device is connected to the first and second pressure sensors and configured to receive the measured bladder pressure and measured mid-urethral pressure during at least one breath cycle and process the data representative of the bladder and mid-urethral pressures obtained during the at least one breath cycle to diagnose a physiological abnormality within the patient.
1. A method for evaluating a patient for a physiological abnormality, comprising:
inserting a urinary catheter within a patient's bladder, the urinary catheter having a first pressure sensor on the surface of the catheter and positioned within the patient's bladder for measuring bladder pressure and a second pressure sensor on the surface of the catheter and positioned at the mid-urethral sphincter for measuring mid-urethral pressure at the mid-urethral sphincter;
measuring the bladder pressure and mid-urethral pressure during at least one breath cycle;
processing data representative of the bladder and mid-urethral pressures obtained during the at least one breath cycle within a processing device;
inducing an involuntary reflex cough event within the patient during the at least one breath cycle; and
obtaining an electromyogram (EMG) form the involuntary cough activated paraspinal muscles while inducing the involuntary reflex cough event and processing, within the processing device, the pressure data obtained from the bladder and mid-urethral sphincter with the EMG data received from the involuntary cough activated paraspinal muscles to diagnose a physiological abnormality within the patient.
2. The method according to claim 1 , wherein the urinary catheter further comprises a third pressure sensor on the surface of the urinary catheter and positioned at the external urethral sphincter to measure pressure at the external urethral sphincter during the at least one breath cycle and processing data representative of the pressure at the external urethral sphincter with the data representative of the bladder and mid-urethral pressures to diagnose the physiological abnormality.
3. The method according to claim 1 , wherein the method further comprises inserting a rectal catheter within the rectum of the patient, the rectal catheter having a pressure sensor on the surface of the rectal catheter and positioned within the rectum of the patient for measuring pressure within the rectum during the at least one breath cycle, wherein data representative of the pressure within the rectum is processed with the pressure data from the bladder and mid-urethral sphincter to diagnose the physiological abnormality.
4. The method according to claim 1 , wherein the urinary catheter includes a balloon configured to fix the urinary catheter within the bladder.
5. The method according to claim 1 , wherein the at least one breath cycle includes a plurality of breath cycles, and the method further comprises having the patient voluntarily cough during at least one of the plurality of breath cycles.
6. The method according to claim 1 , wherein the method further comprises diagnosing stress urinary incontinence within the patient.
7. A system for evaluating a patient for a physiological abnormality, comprising:
a urinary catheter insertable within a patient's bladder, the urinary catheter having a first pressure sensor on the surface of the catheter and configured to be positioned within the patient's bladder when the catheter is inserted within the bladder for measuring bladder pressure and a second pressure sensor on the surf ace of the catheter and configured to positioned at the mid-urethral sphincter for measuring mid-urethral pressure at the mid-urethral sphincter;
a processing device connected to the first and second pressure sensors and configured to receive the measured bladder pressure and measured mid-urethral pressure during at least one breath cycle and process the data representative of the bladder and mid-urethral pressures obtained during the at least one breath cycle;
a nebulizer containing an agent that induces an involuntary reflex cough event within the patient during the at least one breath cycle and wherein the processing device is configured to receive pressure data during the involuntary reflex event; and
at least one electromyogram pad (EMG) configured to be attached to the lumbar region of the patient's back and obtain EMG signals from the involuntary cough activated paraspinal muscles during the involuntary reflex cough event and the processing device is connected to the EMG pad to receive the EMG data and process the pressure data obtained from the bladder and mid-urethral sphincter with the EMG data received from the involuntary cough activated paraspinal muscles to diagnose a physiological abnormality within the patient.
8. The system according to claim 7 , wherein the urinary catheter further comprises a third pressure sensor on the surface of the urinary catheter and configured to be positioned at the external urethral sphincter to measure pressure at the external urethral sphincter during the at least one breath cycle and wherein the processing device is connected to said third pressure sensor and configured to receive the data representative of the pressure at the external urethral sphincter to process that data with the data representative of the bladder and mid-urethral pressures to determine the physiological abnormality.
9. The system according to claim 7 , further comprising a rectal catheter configured to be inserted within the rectum of the patient, the rectal catheter having a pressure sensor on the surface of the rectal catheter and configured to measure pressure within the rectum during the at least one breath cycle, wherein the processing device is connected to the pressure sensor on the surface of the rectal catheter to receive data representative of the pressure within the rectum and process with pressure data from the bladder and the mid-urethral sphincter to diagnose the physiological abnormality.
10. The system according to claim 7 , wherein the urinary catheter includes a balloon configured to fix the urinary catheter within the bladder.
11. The system according to claim 7 , wherein the processing device is configured to receive pressure data when a patient voluntarily coughs during the at least one breath cycle.
12. The system according to claim 7 , wherein the processor is configured to process the pressure data to diagnose stress urinary incontinence within the patient.