Stent Removing Snare

The new stent removing snare is designed to streamline indwelling ureteral stent removal in the office, with new access, increased convenience and minimal anesthesia. The design’s goal is ease of use and minimizing set-up time and patient discomfort by eliminating the cystoscopyThe 18 F snare is designed to work best in the male urethraThe snare should not be advanced beyond the bulbous urethra. The snare is also available in a smaller size 16 F, which works better removing a stent from the female bladder, as it may require more manipulation.

Details

Key Benefits

The Stent Removing Snare allows for the non-visual removal of indwelling ureteral stents, without the use of cystoscopy. The instrument is designed to be passed over a guide wire if clinically needed.

Method of Use

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Men (18F Snare should be used) – When the ureteral stent is inserted, the attached string should be left connected to the stent and a 2 cm diameter loop should be created in the string at the point where the string exits the urethra (see figure 1). The loop can be locked in place by placing several knots.

This loop will self-retract into the urethra, with a slight tug on the genitalia, where it comes to rest in the bulbous urethra or anterior urethra and it is not symptomatic. At time of removal, after the instillation of 5-10 cc of an an anesthetic lubricant, the snare is passed into a man’s urethra until the bulbous portion (see figure 2). Rotating the snare as it is slowly withdrawn will hook the loop at the end of the string and pull it out (see figure 3). Occasionally more than one pass is required. If multiple passes, usually 3, do not successfully engage the string loop, it is possible that that the loop could have retracted into the bladder and cystoscopic removal is required. In men the snare should not be passed beyond the bulbous urethra.

Women (16F Snare recommended, but 18F can also be used. If unsure of the angle of the course of the urethra, passage over a guide wire is recommended) – In women the loop is not in a confined space and engaging it may require more manipulation. It is suggested that more than one loop be made in the string to increase the chance of hooking one of the loops. The loop does not self-retract, but has to be pushed into the bladder with the scope or a well-lubricated hemostat.

The snare enters the bladder and is directed towards the side of the stent. A finger in the vagina can help with localization of the snare and the stent itself. The snare may grab the stent itself or one of the string loops. If the stent itself is engaged, a proprioceptive feedback tug will be felt. If the snare misses, repeat passes can be made. Cystoscopic removal is the fallback option.

Features

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The snare is made of surgical steel, and has a flexible stem for tactile feedback in case of resistance during the course of its passage. There are no sharp edges on the snare to minimize discomfort during passage. It also has a central hole for passage over a guide wire.

Technical Aspects

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The design of the snare has a conical appearance with increasing size between 16-18 F. The snare element at the base of the cone is a groove 3 mm wide, which can hook the stent or the string attached to it. The design of the head allows for non-traumatic travel through the urethra. This conical configuration also allows this instrument to be used as a dilator, when passed over a guide wire, as a way to avoid a false passage with blind dilatation.

 

Removing a Stent with a Stent Removing Snare

How To Create A “Loop” In The String Attached To The Stent To Facilitate Stent Removal

Patient Having Stent Removed With A Stent Removing Snare

CPT® code1 Total Non-Facility RVU’s2 Medicare Non-Facility Price2, 3
Physician Coding
50386 – Removal (via snare/ capture) of internally dwelling ureteral stent via transurethral approach, without use of cystoscopy, including radiological supervision and interpretation. 21.1 $762
50385 – Removal (via snare/ capture) and replacement of internally dwelling ureteral stent via transurethral approach, without use of cystoscopy, including radiological supervision and interpretation. 30.8 $1,112
52310 – Cystoscopy, with removal of foreign body, calculus or ureteral stent. 8.3 $298

Uramix does not endorse any particular code for billing purposes. These codes are only provided for information purposes.

1,2,3 cms.gov/apps/physician-fee-schedule

Pricing

Description: 1 set (18F and 16F)
SKU #: 3301
Stent Removal Snare: $879 per snare, $1,579 for both
Shipping: $50


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