The sterilizing and aseptic handling of ureteral catheters has always been more or less of a problem to the cystoscopist. The method that I here present is one that I have used lately and have found simple and efficient.
The boiling or immersion of the catheters in various solutions renders them soft and difficult to handle. Formaldehyd as it is generally used is not reliable. With a sterile catheter that is not protected it is almost impossible to avoid contamination of the long free portion. It is also very difficult for the cystoscopist to keep his hands clean, as the connection and switch cannot be sterilized and the handling of the catheter with forceps or gauze is difficult.
I have bags made of muslin 2 cm. wide and about 75 cm. long. It is important to have them wide enough so that the bags fold up readily as the catheter