It uses liquefied nitrous oxide to destroy the tissue by freezing the cell fluid which in turn forms ice shards that rupture the cell membrane in turn destroying the cell and the lesion.
Cryotherapy is beneficial as it is quicker than other treatments and patients can be in and out in seconds. It requires no anaesthesia and has minimal scarring. There are no limitations on activities (except protecting the area from damage or abrasions) and patients can return to normal activities after treatment.
The CryoPen is a unique pen-like device that allows for more targeted treatments, meaning no healthy tissue will be affected during treatments.
Frequently asked questions
How safe is cryotherapy?
Cryotherapy is a relatively low risk procedure. CryoPen delivers N20 directly to the lesion and not the healthy surrounding tissue. CryoPen is both CE and FDA registered.
How long are CryoPen treatments?
The penetration rate of freezing with CryoPen is approximately 1mm per 5 seconds, with a maximum freezing depth of 3 to 6mm depending on the used applicator. The duration of treatment time will depend on the surface area and the thickness of the tissue being treated Upon the clinical evaluation of the thickness of the lesion, the operator will choose an application time from 1 to 30 seconds.
Is the treatment painful?
There will be a pain sensation similar to a ballpoint pen being pushed onto the skin when the nitrous oxide reaches the bottom of the lesion. There might be a little residual stinging for a few minutes after treatment. Occasionally a blister might form and persist for a few hours.
Will there be a follow up session?
A follow up visit is recommended after 2 to 4 weeks to confirm that all pathological tissue has disappeared or if a follow up treatment is necessary.
What if I have darker skin?
Repeated short freezing cycles of 3 to 6 seconds at two-week intervals are recommended if you have a darker skin type.
Do not use any creams, powders or ointments on the blister.
