What are the different types of ureteral stents?
TYPES OF URETERAL METAL STENTS The self-expandable, the balloon expandable, and the themoexpandable shape memory stents, the covered stents, and the lately introduced all metal double pigtail stent. Each type of MS will be described separately.
What is Allium stent?
The Allium Bulbar Urethral Stent (BUS) is a self-expandable, large-caliber, round, metal urethral stent designed for urethral strictures treatment. The stent is constructed of a coiled, super-elastic metal alloy (nitinol) and coated with a co-polymer which prevents mucosal hyperplasia and encrustations.
What material is ureteral stent?
The gold standard of composition material in the case of ureteral stents is polymeric compounds, including silicone, polyurethane Siliteck, C-Flex, Percuflex, Tecoflex and others [Venkatesan et al. 2010; Beiko et al. 2003].
Are there different sizes of ureteral stents?
We will use the height measurement criteria used by Lee et al in their study. Patients less than 5’2″ will receive a 22 cm stent, 5’3″-5’7″ will get a 24 cm stent, 5’8″-5’10” will get a 26 cm stent, 5’11” to 6’1″ will get a 28 cm stent, and all patients greater than 6’2″ will receive a 30 cm stent.
What is a double J stent used for?
Double J stents have been used for more than 25 years and have become a staple of the urological endoscopic armamentarium. They are used mainly for stabilization of the ureter after surgery and to provide drainage through a ureter that may be obstructed, leaking, dysfunctional, or strictured.
What is urology stents?
Ureteral stents are thin, flexible tubes that hold ureters open. The ureters are part of the urinary system. Typically, these long, thin tubes carry urine from the kidneys to the bladder. Healthcare providers place ureteral stents to prevent or treat ureteral obstructions.
How is a ureteral stent inserted?
Using a fluoroscope to see the ureter, a guide wire is inserted into the ureter. The stent is run over the guide wire and placed in its permanent position within the ureter. Once the stent has been placed, the guide wire may be removed, or a nephrostomy catheter may be left in place for a day or two and then removed.
Is there metal in a ureteral stent?
Purpose: Metal ureteral stents are a relatively new version of a device with a long history of relieving ureteral obstruction. Metal stents are effective for relieving ureteral obstruction but success regarding patient tolerability has been variable.
What is DJ stent made of?
Ureteral stents are basic and the most frequently used agents in the area of urology. A ureteric stent is a specially designed hollow tube, made of a flexible plastic material that is placed in the ureter. The length of the stents used in adult patients varies between 24 to 30 cm.
How do you choose a ureteral stent size?
In patients >175 cm, a 24- or 26-cm stent might be more appropriate. Conclusions: Body heights can predict the ideal stent length. Based on a Chinese population, a 22-cm stent length is more appropriate for those <175 cm. A longer, 24- or 26-cm stent may be suitable for those >175 cm.
What is the difference between lithotripsy and ESWL?
Shock Wave Lithotripsy (SWL) is the most common treatment for kidney stones in the U.S. Shock waves from outside the body are targeted at a kidney stone causing the stone to fragment. The stones are broken into tiny pieces. lt is sometimes called ESWL: Extracorporeal Shock Wave Lithotripsy®.
How big is a ureter stent?
Silicone or polyurethane (plastic) ureteral stents are about 10 to 15 inches long and about ¼ inch in diameter. They line the entire length of the ureter, keeping it open. The top part of the stent has a coil that sits inside a kidney. The loop at the lower end sits inside the bladder.