Double J Stent

Removal of tumors from either the ureter or the kidney

With this objective in mind, internalized Ureteral catheters were developed. The most commonly used type is a plastic catheter with a curl at both the proximal and distal ends; i.e. Double J catheter.

William Harvey - By his discovery of the circulation of the blood, Harvey revolutionized physiology which had been based on the assumptions about how materials flow through the blood vessels.