Spray cryotherapy utilizing the truFreeze® system, is a simple procedure performed using standard techniques including esophagogastroduodenoscopy (EGD), thoracoscopy, or bronchoscopy. Spray cryotherapy involves use of standard sedation (conscious or full) and introducing an endoscope. The truFreeze System offers two venting options for greater flexibility:
- Active venting (suction) is a venting method in which the onboard suction is used to evacuate gas from the ablation area via the Dual Lumen CryoDecompression Tube (CDT). Active venting may be used when spraying distal to an obstruction or flaccid organ that could potentially collapse (e.g., esophagus, colon, and rectum).
- Passive venting is a venting method in which gas disperses from the ablation area by natural diffusion (i.e., no suction pump is used). The diameter of the area through which gas vents passively must be adequate to ensure distention does not occur. Passive venting may be used with a vent tube when spraying proximal to a resistor where the lumen is patent (open), or when the ablation area is open to atmospheric pressure (e.g., dermatological or open surgery).
More information is available by downloading the truFreeze System Instructions for Use PDF.
After the procedure your patient will follow standard institutional and post-sedation recovery guidelines. Plan to perform a follow-up examination in approximately four to six weeks to assess your patient’s progress, determine if additional procedures are needed or begin a recommended monitoring schedule.