The CryoPac
The CryoPac had been developed for a wide variety of applications for treating Podiatric pain syndromes.

This new, revolutionary clinical procedure enables many patient's experiencing chronic or acute pain to obtain effective, long term pain relief. Treatment is performed by using a precise freezing technique to block the relevant peripheral nerves.
Minimally-Invasive
Cryosurgical Procedure
Photo courtesy of Lawrence M. Fallat. DPM
Benefits of Cryosurgery:

■ Long term pain relief
■ Low incidence of complications
■ Minimally-invasive
■ High procedure success rate
■ Office based procedure
■ Six (6) minute procedure
■ Eliminates need for hospitalization
■ Treatment may be repeated
■ Immediate ambulatory status
■ Short patients recovery period
■ Cost effective
■ High patients satisfactory rating
■ No Amputation Neuroma Formation
Principles of Cryosurgery
and Nerve Location
Cryoanalgesia for pain involves the location and freezing of the nerve associated with the pain. The relevant nerve is located by using the probe tip. Once in the region, accurate tip positioning is achieved by nerve stimulation and observation of the patient's response.

The probe tip is the active electrode of the built-in nerve stimulator and the circuit is completed via a patient grounding pad. The output stimulator allows a choice of two frequencies, for motor and sensory responses.

This feature combined with a choice of polarity for the wave form and a constant variable voltage rate of 0v and 5v allows the clinician to choose the optimum position for freezing the nerve.
Nerve Freezing
Gas expansion technology is used to cool the probe tip. High pressure N20 gas is cooled by expanding it through a small orifice. This causes the heat to be withdrawn rapidly from the probe tip.
Probe Configuration
The cryoprobe has been designed to ensure that the cooling tip is located only at the tip, thereby eliminating unwanted stem freezing and associated skin burns. At the center of the frozen tip, the temperatue is approximately -70°C (used with N20)