EndoViper Gastrointestinal Foreign Body Extractor


Esophageal food bolus impactions occur in an estimated 13 out of 100,000 people and are considered a gastrointestinal emergency, resulting in 1,500 deaths per year. Most impactions occur because of underlying pathological condition such as eosinophilic esophagitis, strictures of the esophagus, and diffused motor abnormalities of the esophagus.  Existing gastrointestinal foreign body extraction devices tend to shred the foreign body, resulting in piecemeal removal and multiple passes which adds to the time required for removal. This increases the risk of pulmonary aspiration, compromised airway, and esophageal lacerations or perforation.

Researchers at Arizona State University have developed an upper gastrointestinal foreign body extraction device which provides a safer and more efficient method for foreign body extractions. This durable yet disposable device utilizes a multi-pronged grasper featuring a security net, lasso-closing mechanism, catheter and control handle to allow for full encapsulation of the material without shredding and aspiration. The distal end of the device can be closed inward, securing material from underneath. This design may cut down on the time required for foreign body removal, which could lower average labor costs, decrease the duration of anesthesia and reduce the risk of complications.

This novel extraction device provides an innovative solution to esophageal food bolus impactions using industry standard best practices, a novel design and quality systems.

Potential Applications

•       Gastrointestinal foreign body removal

Benefits and Advantages

•       Could lower duration of anesthesia

•       Decreases the risk of complications such as pulmonary aspiration, compromised airway, and esophageal perforation

•       Ability to extract large volumes of foreign material potentially resulting in faster procedure times

o       Faster procedure room turnover

•       Doesn’t shred food

•       The top down approach allows maximum visibility through the endoscope camera during the extraction procedure

•       The device is easy to control and maneuver

For more information about the inventor(s) and their research, please see
Dr. Smith’s departmental webpage

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Patent Information

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