However, the procedure is more invasive for surgical catheters.

Source: https://thefrisky.com/pain-catheter-help-with-chronic-back-pain/

Needles and plastic catheters frequently and complications when injected, partly because they are not as flexible as the body’s soft tissue and veins.

Source: https://www.newscientist.com/article/2403047-flexible-needle-goes-soft-after-injections-for-safety-and-comfort/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home

Since these are big catheters, selection of patients by size is very important.

Source: https://www.gjsentinel.com/lifestyle/health_and_wellness/long-used-in-adults-wireless-pacemakers-might-soon-be-an-option-for-kids/article_c4247482-0c24-5c11-90d0-a9a2f7491ca4.html

To date, Adan has undergone five surgeries, inserting and removing catheters, in an attempt to address a series of urinary tract complications from the accident.

Source: https://grist.org/international/locusts-pesticides-kenya-united-nations/