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Catheter design for effective manual bladder irrigation.

Samuel Mesfin1, Carl Sarkissian, Bahaa Malaeb

  • 1University of Minnesota, Minneapolis, Minnesota, USA.

The Journal of Urology
|October 22, 2011
PubMed
Summary
This summary is machine-generated.

The 6-hole irrigation catheter effectively removed simulated bladder clots compared to the traditional Malecot catheter. Modified Malecot catheters also showed improvement, highlighting catheter design

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Area of Science:

  • Urology
  • Medical Device Engineering

Background:

  • Bladder clot retention is a common complication requiring catheterization.
  • Traditional Malecot catheters may have limitations in clot evacuation efficiency.

Purpose of the Study:

  • To compare the clot removal efficiency of a 6-hole irrigation catheter versus traditional and modified Malecot catheters.
  • To evaluate the impact of additional side holes on catheter performance in simulated clot clearance.

Main Methods:

  • A bladder model using latex balloons filled with solidified gelatin was employed.
  • Simulated clots were removed using five manual irrigation/aspiration cycles with a 60 cc syringe.
  • The efficiency of three catheter designs (6-hole, Malecot, modified Malecot) was assessed by measuring residual clot volume.

Main Results:

  • The 6-hole catheter demonstrated significantly greater clot evacuation efficiency than the standard Malecot catheter (p = 0.014).
  • A modified Malecot catheter with four additional holes was more effective than the original Malecot (p = 0.020) but not significantly superior to the 6-hole design.
  • After five cycles, residual clot was 77.0% for Malecot, 60.4% for 6-hole, and 54.0% for modified Malecot catheters.

Conclusions:

  • The 6-hole irrigation catheter offers an advantage in removing simulated bladder clots over the Malecot design.
  • Enhanced clot removal by the 6-hole catheter may be due to the larger surface area of its holes.
  • Further research into hole number and spacing is recommended to optimize catheter designs for clot dissolution.