I -Chemationary Cusheter yityhubhu efakwe kwi-bladder nge-urethra yokuphelisa umchamo. Emva kokuba i-Caheter ifakwe kwi-bladder, kukho ibhaluni ekufuphi nentloko ye-catheter ukulungisa ityhubhu ihleli kwi-tube ihleli kwi-bladder ihleli kwi-bladder kwaye akukho lula ukuphuma kwingxowa yomchamo ukuze iqukene umchamo. Ngokwe-Doffery Maqual, amakhwetha e-Urifor anokukhutshwa kwi-catheter yerabha yendalo, irabha yerabha yerabha okanye i-polyviny ye-pilyviny ye-chlorinyl (pvc catheter).