The present method in catheter insertion is uncomfortable to say the least.
This invention from Balint Szent-Miklosy
works to make it a simple procedure taking nature’s own way into account.
The urethra’s normal function is to comfortably pass water out of the body. This invention reverses the process and pumps pure water back up into the urethra through the catheter which has a slightly bulbous head. As the water fills the urethra it wants to exit forming a liquid washer around the entering catheter.
Figure1 is a fragmentary elevation view showing the end of a low friction catheter for insertion in the urethra of a patient.
Figure 2 is a longitudinal cross-sectional view taken along the line 2-2 of Figure 1, with the low friction catheter shown in use inserted in a urethra. The direction of insertion of the low friction catheter shown by the arrow marked with the letter ”A”. The direction of flow of pressurized distilled water is indicated by the unmarked arrows. The flow of distilled water between the wall of the urethra and the low friction catheter creates a low friction interface which facilitates the easy insertion of the low friction catheter into the urethra.
Figure 3 is a cross-sectional view taken along the line 3-3 of Figure 2 showing the passages for flow of distilled water.
Figure 4 is a cross-sectional view similar to Figure 3 showing an alternative embodiment of the low friction catheter in which the surfaces adjacent to the flow passages have been relieved to reduce the friction between the low friction catheter and the wall of the urethra.