IceCure
™
Medical Ltd.
DSR3200000 rev. G
ProSense
™
Confidential
User Manual
69
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5.2.6.3
Cryoprobe Selection
Select a cryoprobe according to your clinical judgment and target tissue.
The ice ball size is a function of the freezing time and is also affected by the tissue and
blood flow (bench test on fig 58, Ice ball isotherms in gel at room temperature).
On the label of the cryoprobe packaging, the specification of the
cryoprobe is clearly mentioned, with reference to the following
elements:
* Diameter (2.4 or 3.4mm)
* Shaft length (defined in mm)
* Ice ball shape (spherical or elliptic).
* Tip shape (trocar or pencil or blunt)
Always monitor the ice ball growth with adequate imaging techniques.
If an introducer to guide the cryoprobes to the tissue location is used, make sure to
choose an introducer with tight dimensions. The cryoablation may be affected by the
use of an introducer that is too big in diameter and create an air barrier between the
freezing power of the cryoprobe and the tissue, especially if this introducer is the same
length as the cryoprobe shaft and if the ice ball will be created on this introducer part.
In such a case, injecting 5cc of sterile saline or water into the introducer lumen can
improve heat exchange between the cryoprobe and the tissue.
Warning
The system and its accessories: cryoprobes, introducers, temperature sensor
and holder
are not compatible with magnetic resonance imaging
