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LM-900 Cryosurgery System • Instructions for Use • English (continued)
PRECAUTIONS
• This device utilizes high pressure gas and must be used with care to avoid unexpected
release of pressure. Maintenance and care must be taken to avoid injury to user and
patient.
• Use only medical grade gas under pressure range 600-800 psi (42-56 Kg/cm
optimal freeze.
• Do not store gas cylinders above normal room temperature.
• It is the operator's responsibility to fit the exhaust hose between cryosurgical unit
exhaust and disposal point to minimize gas exposure.
• Do not drag, slide or roll cylinders. Cylinders should be stored upright and firmly secured
to prevent falling or tipping.
• Do not crimp or tightly bend the gas hose. The hose should be coiled no tighter than an
8 in. (20.3 cm) circle. A damaged hose must be replaced.
• Do not use tools to tighten connections. Hand-tightening is all that is required.
• Before disconnecting the console from the gas cylinder, turn gas cylinder valve OFF.
• Before changing tips, make sure gas is off at the console.
• If cryo tips are dropped, they should be returned to the factory for inspection.
GENERAL INSTRUCTIONS
Check the gas cylinder to be certain that it contains adequate gas. The pressure gauge
should read between 600 and 800 psi (42-56 Kg/cm
pressure below 600 psi (42 Kg/cm
or defrost, and is not recommended. The gas cylinder should be securely seated on the
mobile cart, and fastened with the provided safety chain.
The tubing leading from the console to the cryogun should be examined by running the
tube between the thumb and forefinger. Check for any kinks or abrupt bends. A kink in the
line can cause a weakness, which can erupt under pressure.
Located between the tip and the gun barrel is an "O" ring seal, which should be inspected
prior to each use.
Before each use, test for proper operation by following the instructions below, except
point the tip towards the floor while squeezing the trigger for several seconds.
SCAVENGING HOSE
A twenty-foot (6.1 m) scavenging hose (P/N 3012-0314) is provided with the unit to divert
gas away from the operator and patient to a remote, well-ventilated area. One end of
the scavenging hose should be pushed over the exhaust muffler on the console of the
cryo unit (mild soapy water will ease this operation), and the other end should lead to a
remote, well-ventilated area.
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