Models 50501 and 50502
LM-900 Cryosurgery System
Directions for Use
®
INTRODUCTION
Model 50501 requires Medical Grade N
2
O (Nitrous Oxide) gas. Model 50502 requires Medical
Grade CO
2
(Carbon Dioxide) gas.
Each LM-900 has been tested prior to shipment. Proper care and maintenance should ensure a
long useful life.
This Directions for Use document includes general and specific directions for use, and
information on warnings and precautions, storage, cleaning, and disinfection.
Please contact our Customer Service department with any comments or questions.
Send correspondence to:
CooperSurgical
Customer Service Dept.
95 Corporate Drive
Trumbull, CT 06611 USA
Phone:
800-243-2974 Toll Free
203-601-5200
THE LM-900 CRYOSURGERY SYSTEM
No tools are required for assembly and operation of the LM-900 Cryosurgery System.
The LM-900 is delivered in an attache carrying case along with interchangeable cryotips, a
package of replacement “O” rings, cleaning plugs and a gas scavenging hose. On the end of
the cryogun barrel is a tip protector, which is removed when a cryotip is used, and replaced
when the cryogun is not in use.
An empty 20 lb N
2
O (Nitrous Oxide) or CO
2
(Carbon Dioxide) gas cylinder is
available for the LM-900. The N
2
O or CO
2
gas is used as the refrigerant for the cryogenic
process. The LM-900 should be used only in a well-ventilated area. Consult your approved
local compressed gas supplier. A twenty-foot (6.1 m) scavenging hose is provided to divert
used gas away from the operator and patient. The mobile hand cart should be used for cylinder
movement. Compressed gas cylinders should be refilled only by qualified suppliers. Do not
allow the temperature where cylinders are stored to exceed normal room temperature.
READ THIS ENTIRE DOCUMENT BEFORE OPERATING
THE LM-900 CRYOSURGERY INSTRUMENT
20 POUND CYLINDER
CARRYING CASE
CLEANING PLUGS
& “O” RINGS
QUICK-CONNECT
CONSOLE TIPS CRYOGUN
MOBILE CART
LM-900 Cryosurgery System
Directions for Use
1
INDICATIONS
The LM-900 is a cryosurgery system intended to be used in the process of controlled
destruction of defined areas of benign or pre-malignant lesions.
CONTRAINDICATIONS
The LM-900 is not indicated for therapeutic treatments to the central circulatory or central
nervous systems.
CAUTION
U.S. Federal law restricts this device to sale by or on the order of a licensed practitioner or
licensed medical facility.
WARNINGS
• Exposure to nitrous oxide may result in impairment of performance, cognition or dexterity.
Ventilate well. Refer to instructions for venting nitrous oxide gas.
• Do not sterilize. Device must only be cleaned and disinfected. See cleaning and disinfection
instructions below.
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
2
) for
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 in upright position 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 cryotips 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
2
) for proper freezing to occur. A pressure below
600 psi (42 Kg/cm
2
) may not provide enough pressure for sufficient freeze 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.
LM-900 Cryosurgery System • Directions for Use
2
VENTING NITROUS OXIDE GAS IN OPERATING ROOM, CLINIC OR OFFICE
Exhaust gas for the LM-900 system using nitrous oxide can be safely vented in a number
of ways.
1. Vented directly to the outside via the exhaust hose.
2. Vented into room exhaust ventilation system provided the ventilation system is a non-
recirculated type.
3. Vented to a dedicated system for venting anesthetic gases. The flow capacity of the system
shall have a capacity of no less than 40 L/min.
CAUTION
• Use ONLY the exhaust hose provided by CooperSurgical /Leisegang. No
substitutes allowed. Substitute parts may result in SEVERE RUPTURE OR BURSTING
of the tubing and a subsequent loud noise.
• Do not restrict or kink any hose. Any restriction may expand the probe exhaust tubing to
the point of rupture. (See Caution #1.)
DIRECTIONS FOR USE
1. Tighten quick-connect to medical grade gas supply.
2. Connect gas scavenging hose to exhaust muffler on console. Vent to remote location.
3. Select proper tip for cryosurgical procedure.
4. Remove one (1) disposable drape and two (2) security
bands from the package (See Figure 4-1)
5. On drape, make a 1/8” (approximate) slit on the distal
(narrow) side centered up to down. (See Figure 5-1)
6. Position tip tightly on cryogun, using finger pressure only.
(See Figure 6-1)
7. Slide large open end of drape over device.
(See Figure 7-1)
8. Through the slit, pull drape over tip and onto shaft.
(See Figure 8-1)
LM-900 Cryosurgery System • Directions for Use
3
Fig. 4-1
Fig. 5-1
Fig. 6-1
Fig. 7-1
Fig. 8-1
9. Using one (1) security band, wrap twice and seal distal
end of drape (near tip). (See Figure 9-1)
10. Using one (1) security band, wrap twice and roll band to
proximal end of drape (near handle). (See Figure 10-1)
11. Unit shown fully draped and secured.
(See Figure 11-1)
12. Turn arrow valve to “ON” position.
13. Apply probe to surgical site.
14. Squeeze trigger to freeze or push trigger forward to lock it in place during freeze mode.
Note: Usual freeze time is one (1) to three (3) minutes.
15. Release trigger to defrost.
16. When procedure is complete, turn arrow valve to “OFF” position.
17. Shut off gas supply valve.
18. To remove drape cut distal and
proximal security bands loose.
(See Figures 18-1 and 18-2)
19. Pull drape off from back to front, inside out, similar to
a surgical glove. (See Figure 19-1)
20. Discard pieces according to federal and local regulations.
CLEANING INSTRUCTIONS
WARNING: Do not use bleach or any product containing chloride in the cleaning of this product.
The LEISEGANG LM-900 Cryosurgical System and Probes can be cleaned using the
following procedure:
1. Instruments should be cleaned as soon as possible. Do not allow blood and debris to dry on
the instrument. If cleaning cannot be performed within a reasonable amount of time, keep the
probe and shaft moist.
2. Wearing appropriate protective equipment, hold the cryosurgical gun by the handle with the
shaft and probe pointing downwards at an angle. Ensure the probe is still secured to the gun
shaft. The probe must remain secured to the gun shaft throughout the shaft cleaning.
3. Carefully rinse blood and debris from the shaft and probe of gun using cool water
(20°C – 25°C). Ensure that water does not contact the joint between the gun casing and
the shaft.
LM-900 Cryosurgery System • Directions for Use
4
Fig. 9-1
Fig. 10-1
Fig. 11-1
Fig. 18-2
Fig. 18-1
Fig. 19-1
LM-900 Cryosurgery System • Directions for Use
4. During rinsing, use a clean, soft bristle brush to loosen and remove as much visible soil as
possible from device. Focus brushing in challenging features such as mating surfaces and
crevices.
5. Continue brushing and rinsing until no visible soil remains on the device.
6. Prepare a neutral pH enzymatic cleaner solution according to the manufacturer’s instructions.
Immerse a clean, disposable, absorbent, non-shedding cloth into the cleaner solution and
wring thoroughly.
7. Commencing with the gun shaft/casing joint, wipe thoroughly, especially in hard to
reach areas.
8. During wiping, pour enzymatic solution down the shaft so that it runs the length of the shaft to
the probe, but does not contact the shaft/casing joint. After pouring the solution, use a clean,
soft bristle brush to reach challenging features with the cleaner solution.
9. Continue wiping and brushing for a minimum of one (1) minute. Repeat pouring the enzymatic
solution during the brushing and wiping activities. Rinse the cloth in clean water and repeat
steps 7 & 8 two (2) or more times (for a total of three (3) iterations) to fully remove soils.
10. Thoroughly rinse the shaft and probe with warm (35°C-40°C) water until no visible detergent
remains. While rinsing, use soft bristle brushes to clean out mating surfaces and crevices
and other challenging features.
11. Using a soft, lint-free, clean cloth, pat the probe and shaft dry. Hold the gun facing downwards
and carefully remove the probe.
12. Wipe the protected areas and inside threads of the shaft and probe with a clean, disposable,
absorbent, non-shedding cloth that has been immersed in cleaner and appropriately wrung
out. Continue wiping until all visible soil is removed.
13. Wipe the protected areas and threads of the shaft and probe repeatedly with a clean,
disposable, absorbent, non-shedding cloth that has been immersed in clean water and
appropriately wrung out. Rinse towel after wiping and repeat until no visible detergent
remains.
14. Pat the probe and shaft dry using a soft, lint-free, clean cloth. Visually inspect the device for
soil. Repeat the above cleaning procedure until no visible soil remains on the components.
15. Apply isopropyl alcohol (70% or greater) to a soft, lint-free, clean cloth (Do not saturate). Wipe
down the entire cryosurgical system (probe, shaft, gun, handle, tubing, console, etc.) for a
minimum of one (1) minute.
16. Dry the components using clean compressed air or a soft, lint-free, clean cloth.
DISINFECTION INSTRUCTIONS
Intermediate Level Disinfection of Cryosurgical Shaft
1. Instruments should be cleaned as soon as possible. Do not allow blood and debris to dry
on the instrument. If cleaning cannot be performed within a reasonable amount of time,
keep the shaft moist.
2. Prior to performing Intermediate Level Disinfection of the cryosurgical gun shaft, cleaning
must be performed following Cleaning Instructions.
3. Wearing appropriate protective equipment, hold the cryosurgical gun by the handle with
the shaft pointing downwards at an angle.
4. Obtain a clean, disposable, absorbent, non-shedding cloth that has been submerged in a
prepared high level disinfectant solution (Cidex OPA or equivalent) and wrung out so that
dripping has ceased.
5. Begin wiping the shaft surface up and down the entire length of the shaft. Wipe the inner
edge where the probe and shaft meet.
6. Continue wiping the surface of the shaft for one (1) minute. Re-submerge the cloth into the
prepared high level disinfectant solution, wring out until dripping has ceased and repeat
Step 5.
5
7. Inspect the shaft and any mating surfaces for soil deposits.
NOTE: Mating surfaces can trap soils (crevices and inner edge). Ensure the soils are
removed prior to continuing the disinfection of the shaft.
8. Repeat Steps 5 & 6 a minimum of two (2) more times for a total three (3) disinfection
wiping cycles.
9. After the third cycle, obtain another clean, disposable, absorbent, non-shedding cloth,
submerge it in the prepared high level disinfectant solution and wring out the cloth so that
dripping has ceased.
10. Using the high level disinfectant soaked towel, wrap the shaft of the cryosurgical device
tightly and let stand for the recommended contact time by the manufacturer.
11. Wipe the shaft with a clean, disposable, absorbent, non-shedding cloth that has been
immersed in warm, potable water (35°C - 40°C) and has been wrung out so that dripping
has ceased.
NOTE: Be careful not to contact the inner tubing of the cryosurgical shaft with any
liquid solution or water as this may cause irreversible damage.
12. Inspect the shaft and mating surfaces for any soil deposits. Repeat Steps 4 – 11 until the
shaft is free of soils.
13. Using a soft, lint-free, clean cloth, pat the probe and shaft dry.
14. Apply isopropyl alcohol (70% or greater) to a soft, lint-free, clean cloth (do not saturate).
Wipe down the cryosurgical system shaft, gun, handle, tubing and console.
15. Dry the components using clean compressed air or a soft, lint-free, clean cloth.
High Level Disinfection of Cryosurgical Probes
1. Cryosurgical probes should be cleaned following the Cleaning Instructions prior to High
Level Disinfection. Failure to perform cleaning according to this procedure may result in
inadequately cleaned probes and may contribute to inadequate disinfection.
2. Immediately following the cleaning procedure and while wearing appropriate protective
equipment, install the cleaning plug, ensuring the rubber O-ring is present. Installing a plug
without an O-ring will cause the disinfectant to penetrate into the probe tip and will
contribute to unit malfunction. Ensure the plug is tight prior to proceeding.
3. Prepare an ortho-phthalaldehyde based, high level disinfectant solution following the
manufacturer’s guidelines (recommended: Cidex OPA or equivalent). Do not use a
disinfectant solution which contains hydrogen peroxide or chlorine as this will damage
the probes and contribute to unit malfunction.
4. Carefully place the clean, plugged probes into the prepared solution and soak according to
the manufacturer’s recommended parameters to obtain high level disinfection. Failure to
follow the manufacturer’s recommended parameters may result in inadequate disinfection.
5. After the recommended soaking period has elapsed, follow the manufacturer’s instructions
for removal and rinsing. Failure to follow the manufacturer’s recommended parameters
may result in inadequate removal of residual disinfectant. Additional rinsing can be
performed, however is not required as long as the recommendations by the manufacturer
have been met.
6. Using a soft, lint-free, clean cloth pat dry the probes. Further drying can be achieved using
clean compressed air.
SERVICE
Please do not attempt to service the LM-900 Cryosurgical System yourself. All service must be
performed by CooperSurgical, Inc.
Service department hours are between 8:30 AM and 5:00 PM, EST Monday through Friday.
For assistance, please call 800-444-8456 or 203-601-5200.
LM-900 Cryosurgery System • Directions for Use
6
95 Corporate Drive
Trumbull, CT 06611 USA
Phone: (800) 243-2974
Fax: (800) 262-0105
International
Phone: (203) 601-9818
Fax: (203) 601-4747
www.coopersurgical.com
3012-0287-CAIFU • Rev. A • 7/16
Made in the USA
EMERGO EUROPE
Molenstraat 15
2513 BH, The Hague
The Netherlands
EC REP
CooperSurgical, Inc.
95 Corporate Drive
Trumbull, CT 06611 USA
EC
REP
R
x
Only
EXPLANATION OF SYMBOLS
Reorder Number
Serial Number
Consult instructions for use
Authorized Representative in the European Community.
Keep Dry
Fragile
Manufacturer
CAUTION: U.S. Federal law restricts this device to sale
by or on the order of a licensed practitioner or licensed
medical facility.
Product conforms to the Medical Device Directive 93/42/EEC.
© 2016 CooperSurgical, Inc.
LM-900 Cryosurgery System • Directions for Use
/
