Stryker 940 Technisches Dokument

Maintenance Manual & Operating Instructions

Cast Cutter

INSTRUMENTS

REF 940

REF 941

3/06 940-1-25 REV-H

IMPORTANT INFORMATION: File in your maintenance records

European Authorized Rep:

RA/QA Manager

Stryker France

ZAC Satolas Green Pusignan

Av. de Satolas Green

69881 MEYZIEU Cedex

France

Stryker Instruments

4100 E. Milham

Kalamazoo, Michigan

(USA) 49001

269-323-7700

1-800-253-3210

www.stryker.com

WARNING - CAUTION - NOTE

This symbol is used to alert the reader to important safety and precautionary information. When displayed on the actual

device, it refers the user to accompanying instructions.

Please read this manual and follow its instructions carefully. The words WARNING, CAUTION and NOTE carry special meanings and

should be carefully reviewed.

WARNING: The personal safety of the patient/user may be involved. Disregarding this information could result in injury to the

patient.

CAUTION: These instructions point out special service procedures or precautions that must be followed to avoid damaging the

instrument.

NOTE: This provides special information to make maintenance easier or important instructions more clear.

Important Information

User/Patient Safety

WARNINGS:

• Prior to each use, operate system components and inspect

for damage. DO NOT use if damage is apparent. Take

special precautions regarding electromagnetic compatibility

(EMC) when using medical electrical equipment like the Cast

Cutter REF 941. Install and place the Cast Cutter REF 941

into service according to the EMC information in this manual.

Portable and mobile RF communications equipment can affect

the function of the Cast Cutter REF 941.

• Use only Stryker approved accessories. Other accessories

may result in increased emissions or decreased immunity of

the system. Contact your Stryker sales representative for a

complete list of accessories. DO NOT modify any accessory.

Failure to comply may result in patient and/or operating room

staff injury.

• This equipment is not suitable for use in the presence of

flammable anesthetic mixture with air or with oxygen or nitrous

oxide.

•Use only Stryker Cast Cutter Blades. Titanium nitrided blades

are intended to cut synthetic casting material; and stainless

steel blades to cut plaster casting material. Ion nitrided blades

will cut synthetic or plaster casting material. See Reorder List

in this manual for details.

• Prior to use, check blades for wear. DO NOT use a dull

blade. Use of a dull blade could result in a burn injury to

tissue.

• Make sure blade is properly seated and retaining nut is

tightened before each use. An improperly tightened retaining

nut may come loose, causing blade to fracture, thereby

endangering patient and user.

• Excessive pressure, such as bending and prying with the

blade, may cause the blade to fracture. This could result in

injury to the patient or user.

• Do not cut casting material using a continuous linear motion.

Continuous contact of the blade against skin or padding will

cause a burning sensation to the underlying skin.

• Use extreme caution when cutting synthetic casting materials.

The Cast Cutter blade may overheat, causing burn to

underlying tissue.

• DO NOT remove a non-padded cast with the Cast Cutter. Skin

may adhere to the casting material which could result in injury

to the tissue.

• Your Stryker Cast Cutter is double insulated; grounding is not

required. The Cast Cutter must be completely dry when it

is used. Do not use if any moisture is apparent, which may

occur after cleaning the instrument.

• Disconnect the Cast Cutter from the electrical supply before

performing any cleaning or maintenance procedures.

• DO NOT autoclave or immerse this instrument in liquids. Do

not flush the internal vacuum line with liquids. Liquids would

seriously damage the internal components of the Cast Cutter

and create an unsafe electrical condition.

• Do not use in the presence of fluids.

• Use only identical replacement parts.

CAUTION: Stryker does not recommend using Stainless Steel

Blade REF 940-25 for cutting

Introduction

The Cast Cutter is intended to section and remove plaster and synthetic casts.

Read and understand the information in this manual. Familiarization with the Stryker Cast Cutter prior to use is important.

For further information contact your Stryker Instruments Representative or call Stryker Customer Service at (800) 253-3210.

(Outside the USA, contact your nearest Stryker Subsidiary.)

WARNING: Prior to use the Stryker Cast Cutter and blades should be operated and inspected for any damage. DO NOT use

if damage is apparent.

REF 940 Cast Cutter, 100-120V unit

REF 941 Cast Cutter, 220-240V unit

Symbol Definition

A lightening bolt within a triangle is intended to alert service personnel of the presence of dangerous voltage that may

cause injury or fatal electrical shock. Disconnect unit from electrical supply before servicing.

An exclamation point within a triangle is intended to alert the user to the presence of important operating and

maintenance (service instructions) in the literature accompanying the products.

ON/STANDARD OPERATING SPEED

STANDBY The device is not operational, although the

electrical power is still connected.

ON/HIGH SPEED

DOUBLE INSULATION

TYPE BF Applied Part

WARNINGS:

• Clean and disinfect Cast Cutter and Cast Cutter Blades prior to each use. See Cleaning and Maintenance.

• Prior to use, check blades for wear. DO NOT use a dull blade. Use of a dull blade could result in a burn injury to tissue.

•Use only Stryker Cast Cutter Blades. Titanium nitrided blades are intended to cut synthetic casting material; and stainless

steel blades to cut plaster casting material. Ion nitrided blades will cut synthetic or plaster casting material. See Reorder

List in this manual for details.

CAUTION: The blade must be mounted on the Stryker Cast

Cutter in the following manner or damage to the equipment and

inefficiency of cutting will result.

1. Use the Cast Cutter Blade Tool included with your Cast Cut-

ter to loosen the blade retaining nut. Turn nut counterclock-

wise until it no longer turns.

2. Place the desired blade on the blade mount. Slip the blade

over the nut and posts. The posts will guide the blade into

position. Pull the blade down behind the nut. Ensure that

all four posts have engaged the blade.

3. Use the Cast Cutter Blade Tool to tighten the nut against the

blade. Turn nut clockwise. Make sure the blade is secure

and all four posts are engaged.

WARNING: Make sure blade is properly seated in the

Cast Cutter and retaining nut is tightened before each

use. An improperly tightened retaining nut may come

loose, causing blade to fracture, thereby endangering

patient and user.

Mounting the Saw Blade

NOTE: The Cast Cutter must be connected to the appropriate electrical power supply.

• Use the 100-120V Cast Cutter (REF 940) with a 100-120V CastVac™ (REF 986 or 987) only.

• Use the 220-240V Cast Cutter (REF 941) with a 220-240V CastVac (REF 996) only.

The Cast Cutter can be plugged into a standard outlet. If used with a Stryker CastVac, it can be plugged directly into the vacuum

unit. See your Stryker CastVac Maintenance Manual & Operating Instructions for details.

WARNING: The ON/OFF switch is a function switch which activates the Cast Cutter. To disconnect the electrical supply,

unplug the Cast Cutter from the wall receptacle (or vacuum unit).

STANDARD OPERATING SPEED

STANDBY

HIGH SPEED

Grasp the Cast Cutter as illustrated. As pressure is put on the blade and it cuts down through the cast, the thumb serves as a depth

gauge, striking the cast as the saw blade reaches the padding beneath the casting material.

NOTE: For best control, grasp the Cast Cutter close to the saw blade with one hand, and the index finger extending under the

oscillating head. The motor portion of the Cast Cutter then serves as a counterbalance.

3-Way Switch

Turn the Cast Cutter ON using the three-way switch located near

the power cord. Select the desired speed setting, STANDARD or

HIGH. The center position is OFF.

Using the Cast Cutter

3-Way Switch

When not in use, place the three-way

switch in the STANDBY (center) position.

The cutting action is achieved by high speed oscillation of the blade which cuts on both backward and forward strokes of

approximately 1/8" (3.2mm) excursion. For this reason, the blade should be moved slightly up and down as the cut progresses to

engage more teeth, allowing for more efficient cutting.

Resistance is felt as the blade cuts through the casting material. When the blade fully penetrates the cast, this resistance ends. At

this point, pull back on the saw, being careful not to pull the blade out of the cutting groove. Advance about one-half inch in the

direction of the cut. Continue this process the entire length of the cut. Thus, the cast is cut by a series of alternating pressures

and linear movements along the line of the cut, rather than by a steady linear progression along this line. If the blade is left too long

against the padding, the rapid oscillation gives a burning sensation to the skin beneath.

WARNINGS:

• DO NOT remove a non-padded cast with the Cast Cutter. Skin may adhere to the casting material which could result in

injury to the tissue.

• Do not cut casting material using a continuous linear motion. Continuous contact of the blade against skin or padding will

cause a burning sensation to the underlying skin.

• Do not use the blade for bending or prying open the cast. The blade could fracture and cause injury to the patient or user.

• Use extreme caution when cutting synthetic casting materials. The Cast Cutter blade may overheat and could result in

burns to patient.

CAUTION: Stryker does not recommend using Stainless Steel Blade REF 940-25 for cutting synthetic casting materials. Stryker

recommends using Ion Nitrided Blade REF 940-23 and Titanium Nitrided Blade REF 940-35 for cutting synthetic casting material.

If a skintight cast is desired, put it on with a strip of stockinette tubing or felt placed along one side of the arm or leg and draw a line

above it with an indelible pencil. The cast can then be removed more safely by cutting along this previously marked line.

Using the Cast Cutter

Power-down

WARNING: Unplug the Cast Cutter before performing any cleaning or maintenance procedures.

Wipe the Cast Cutter with a moist cloth and a mild soap. To disinfect, wipe surfaces with isopropyl alcohol. Remove moisture with

an absorbent cloth.

Clean out the vacuum hood if required. Use a straight slot

screwdriver to remove hood and wipe away debris. See

illustration.

Lubrication: The Stryker Cast Cutter has a lifetime lubrication

system and no additional lubrication is required.

WARNINGS:

• DO NOT autoclave or immerse this instrument in liquids. Do not flush the internal vacuum line with liquids. Liquids would seriously

damage the internal components of the Cast Cutter and create an unsafe electrical condition.

• The Cast Cutter must be completely dry when it is used. Do not use if any moisture is apparent, which may occur after cleaning

the instrument.

• Do not use in the presence of fluids.

NOTE: Cast cutter blades can be disinfected with a standard disinfectant.

Cleaning and Maintenance

NOTE: Refer to Replacement Parts List for component

information.

1. Disconnect the Cast Cutter from the electrical supply.

2. Use a screwdriver to loosen and remove the brush

caps located on each side of the Cast Cutter. Remove

and discard the used springs and brushes.

3. IMPORTANT: Insert the new brushes oriented so that

the concave surface of the brush is positioned as

indicated in the illustration. If a brush is rotated, it will

not make proper contact.

4. Place the springs onto the brush and install the brush

caps, tighten brush caps to 4-8 in-lbs (.45-.90 N·m).

5. Verify that leakage current complies with appropriate

specification.

Periodic lubrication or calibration is not required. The necessary lubrication and calibration adjustments have been made in the

factory.

WARNING: Do not use the Cast Cutter if leakage current exceeds appropriate specification (see Specifications). Return your

Cast Cutter to Stryker for service. (Outside US, return it to the nearest Stryker subsidiary).

Periodic Maintenance

Activity/Item

Source cord

3-way switch

RPM check

Interval

Annually

Tools and Equipment Required

None required

Use RPM tester for correct speed

Instructions

Check for cracks. Return for repair if required.

Stop and start unit at least 5 times.

See Specifications.

Brush Replacement

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