A cold snare is a medical instrument and technique used in endoscopic procedures, specifically for the removal of polyps or abnormal tissue growths from the gastrointestinal tract. It is a tool designed to safely excise small lesions or polyps without the need for heat or cautery.
The cold snare consists of a loop-shaped wire element, often made of stainless steel, attached to the distal end of an endoscope or an accessory device. The loop is carefully placed around the base of the polyp or lesion, typically with the assistance of a specialized snare delivery system. Once properly positioned, the loop is gently closed, cutting and containing the tissue within. Unlike other methods, the cold snare technique does not employ heat to cauterize or burn the tissue, hence its name.
This procedure is usually favored for the removal of small or thin polyps, where thermal injury or scarring could be a concern. Cold snaring is a safe and effective alternative, minimizing the risk of complications such as bleeding or perforation. It is commonly performed in various areas of the gastrointestinal tract, including the esophagus, stomach, and colon.
Cold snaring has become an increasingly popular method due to its simplicity, safety, and cost-effectiveness, particularly in outpatient settings. However, its use may depend on the characteristics and location of the polyp, physician preference, and patient considerations.
