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Novel urocatheter for improved diagnosis of urinary incontinence (HD-urethra pressure profilometry)

Abstract

Scientist at the University of Stuttgart, Germany, have developed a new microtip measuring catheter that is equipped with a triaxial acceleration sensor and several pressure sensors around its circumference. The novel urodynamic catheter has been specifically developed for the diagnosis of urinary incontinence. Its considerable improvement in diagnosis allows for an optimized treatment of incontinence.
A prototype of the catheter has already been realized and proofed its operational effectiveness.

Background

The novel urodynamic catheter has been specifically developed for the diagnosis of urinary incontinence. Its considerable improvement in diagnosis allows for an optimized treatment of incontinence. For patients, this presents an opportunity to increase their quality of life. The unwanted release of urine is an extremely uncomfortable and psychologically burdening situation for any patient.

Problem

The urocatheters currently used do not enable precise, spatial mapping of the measured data, as at best, position data from the puller but not the angle of rotation are measured. An angular measurement at the clamping point could also be distorted through twisting of the catheter. Furthermore, conventional microtip catheters have a maximum of two to four pressure sensors around the circumference, resulting in the pressure profile only being measured with very low angular resolution.

Solution

The University of Stuttgart, Germany, has developed a new microtip measuring catheter that allows for determining the catheter position and orientation in the urethra.
This catheter is equipped with a triaxial acceleration sensor. Additionally, it features eight pressure sensors around its circumference that can measure the pressure profile inside the entire urethra with a much higher resolution than conventional catheters.
Acquisition of the pressure profile across the entire lateral surface can provide valuable information for determining the cause of urinary incontinence and thus supports doctors in their choice of therapy.
The acceleration sensor – together with the position data from the puller – allows for precise spatial mapping of the pressure data on the inside of the urethra. By data fusion of the acceleration sensor data with the position data, the urethra's geometry in the sagittal plane can be reconstructed.

Schematic diagram of the newly developed urocatheter with pressure sensors and acceleration sensor.
Schematic diagram of the newly developed urocatheter with pressure sensors and acceleration sensor.
Tip of the newly developed urocatheter

Advantages

  • Precise measurement of the pressure profile
  • Simultaneous data acquisition of all axes of the acceleration sensor
  • Increased resolution
  • Improved and patient-friendly diagnostics
  • First positive results of the prototype currently subject to animal testing have confirmed its operational effectiveness

Application

Diagnosis of incontinence and further pressure profile measurements after adjustment of the catheter tip size (e.g. gastroenterology).

Exposé
Contact
Anne Böse, M.Sc.
TLB GmbH
Ettlinger Straße 25
76137 Karlsruhe | Germany
Phone +49 721-79004-0
boese(at)tlb.de | www.tlb.de
Development Status
Prototype
Patent Situation
DE 102013014685 B4 granted
EP 3041410 pending
Reference ID
13/009TLB
Service
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