www.cochrane.org/CD006008/INCONT_intermittent-catheter-techniques-strategies-and-catheter-designs-managing-long-term-bladder
Manfred-sauer, gentle-cath, hunter-urology, clini-med curan, Braun, MTG pioneer.coloplast, Hollister, wellspect, bard, teleflex, sensa-cath
They are basically two types one which uses a slider that has to be moved back on the catheter to put the next part in, and one which you push in the catheter under a plastic like, or the funnel.
So the first type are Bard, Braun, gentle-cath,MTG,curan,Hunter,wellspect, sensa-cath.
Some of these if they are not too soft can be used by pushing the funnel.
Some of these have to be held they should not fall out while moving the slider back by holding the limb and some by holding the cap.
Some are covered
Some have a good large soft slider and some have a small or hard one.
Some even though they call their catheter tapered are not tapered enough
Some still have a sachet.
Some easier to open than others.
Some come with see through plastic to see the sachet and the water flooding the catheter, with others you cant.
The second type Manfred-sauer,Coloplast, hollister,teleflex one doesnt need to use a slider.