What type of stent is described as 'Double J'?

The term 'Double J' refers specifically to a type of ureteral stent, which is designed to facilitate urinary drainage from the kidney to the bladder. This stent gets its name from its shape; it features two curved sections resembling the letter "J" at each end. The design allows it to secure itself in place, with one end resting in the renal pelvis and the other in the bladder, providing effective drainage while minimizing the risk of dislodgement. Ureteral stents are typically used in situations such as urinary obstruction due to kidney stones, tumors, or strictures, and they are essential in managing these conditions in interventional radiology.

Understanding this specific application highlights the importance of choosing the right type of stent for the anatomy and needs of the patient, emphasizing the relevance of technical knowledge in interventional procedures. While other types of stents like biliary, nephrostomy, and coronary stents serve important functions in different systems (such as the biliary or vascular systems), they do not adopt the "Double J" configuration that defines the ureteral stent.