Abstract: The present invention relates to a device for carrying out cryotherapy treatments, which corresponds to a closed element, shaped like a tube or container, which mainly includes a treatment chamber into which the patient enters and is closed by an access door, as well as a system for supplying and storing a treatment gas, i.e. nitrogen, which allows to reach very low temperatures that are adequate for the recovery of the patient's muscular system. In this way, the device of the present invention has the advantage that the bottom thereof has a floor in the form of a grid, which allows that the gas used and applied to the patient to pass through same and then to be recovered by a feedback system that recirculates the gas and sends it back to the top of the device for application.