Pneumatic Power Instrument Systems Instruction Manual Rev E April 2012

Instruction Manual for Pneumatic Handpieces

TABLE OF CONTENTS Introduction and Markings

1

Foot Control

3

Assembly

4

Handpieces

5-20

General Warnings

21-22

Troubleshooting

23

Cleaning/Decontamination

24

Sterilization

25

Service and Repairs References

26

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Pneumatic Handpieces This manual has been written to help describe the procedures required to keep the MicroAire Pneumatic instruments operating properly.

Throughout the manual, the following terms are used to identify hints and precautions that will help avoid accidental injury to patients or personnel, or prevent damage to delicate power instruments. 1. NOTE: Used to point out the easiest means of carrying out the techniques. 2. WARNING: Used to indicate that the safety of the patient and hospital personnel could be involved. 3.CAUTION: Used to point out special procedures or precautions that must be followed to avoid damaging the instrument. NOTE: All personnel should become familiar with the power equipment before it is set-up for use in any procedure. Personnel in-serviced should include, but not be limited to, central processing personnel, members of the surgical team, and the bioengineering department. WARNING: Prior to use, system components should be inspected and operated to detect any damage or malfunction. Do not use if damage is apparent.

MARKINGS

L Safe M Run a DO NOT Lubricate

b DO NOT Immerse DO NOT Expose To Stray Magnetic Fields European Conformity Mark

CLASS 1 EQUIPMENT: Attention, See instructions for use. This unit is designed for Continuous Operation with Short-Time Loading.

BASIC EQUIPMENT INSTRUCTIONS-EXPLANATIONS

The following components are used with MicroAire’s 1000 and 2000 Series instrument systems: 1. Regulator 2. Hose 3. 1000 Series or 2000 Series handpieces 4. Foot Control (optional) 5. Appropriate burs, blades, drill bits, or wires. NOTE: Personnel should become totally familiar with the power equipment before the first procedure is set-up to be done using the equipment. Personnel inserviced should include, but not be limited to, Central Processing, Surgical Team, and Bio-Engineering if they are involved with the power equipment in the particular facility.

Air Pressure Use the MicroAire 9500-000 or similar pressure regulator. The main tank pressure gauge should indicate a minimum of 500 p.s.i. (35 kg/cm2). Set the output pressure gauge to indicate 100 p.s.i. (7kg/cm2) with the handpiece turning at full throttle. CAUTION:

If the Power Instruments are run with excessive pressure, there will be a rapid increase in the rate of wear and the probability of failure. 1

MicroAire Instructional Manual Air Hose Connector

The nitrogen powered instrument motor modules are available with or without throttle and with a choice of air hose connectors. Be certain the connector on the handpiece matches the air hose: Throttle 1000-100 1000-200 1000-300 1000-400 1000-600

Throttleless 1050-100 1050-200 1050-300 1050-400 1050-600

MicroAire hose connector Zimmer/Hall style hose connector 3M Mini-Driver style hose connector Stryker style hose connector A. O. Synthes style hose connector

NOTE: If you encounter difficulty inserting the hose into the swivel, it could be that the sealing O-ring inside the swivel has dried out. Apply a small amount of sterile lubricant (even water) to the end of the hose, then rotate the hose 180° and reinsert. WARNING: Check the air hose swivel connector to make sure that it will not unscrew (if it should unscrew during surgery, the air hose would whip about violently). If you can unscrew it, do not use the handpiece. Return it to the factory for service.

Nitrogen Supply Each handpiece is powered by compressed nitrogen. You may also use compressed air, provided it is dried and filtered to 3 microns.

Safety Lock

Each handpiece has a safety lock on the lever. Slide it to theL position to deactivate the lever. WARNING: Always use the safety lock when the handpiece is not in use or when changing head modules, blades, burs, drills or any other attachments.

HANDPIECE MicroAire has a variety of pneumatic handpieces designed for different orthopedic and oral surgical uses. These handpieces include both unitized and modular saws, drills, wire drivers, and other precision devices. The modular 1000 Series handpieces consist of separate motor modules and interchangeable heads, as well as specific unitized, single function instruments. Some handpieces are activated by depressing a fingertip throttle lever. Others are designed to be operated only by pressing on a foot control. Handpieces with throttle levers have a safety lock with two possible positions: “OFF” or L, and “ON” or M. When the safety lock is in theL position, the handpiece will not run. WARNING: Always make sure the safety lock is in theL position when the handpiece is not in use or when inserting or removing head modules, blades, burs, drills or any other attachments. 2

Pneumatic Handpieces BURS, BLADES, TWIST DRILLS, AND K-WIRES The head of each handpiece is adapted to accept the necessary blades, burs, drill bits, or K-wires. All of MicroAire’s carbide or stainless steel saw blades, burs and drills have sharp, precision ground teeth or flutes. They are designed to provide the optimum combination of rapid cutting ability and economical price. To enhance the performance of MicroAire pneumatic instruments, optimize preservation of bone surface, and ensure compliance with federal law (FDA 7124.23; FDA 7124.16), use a new saw blade, bur, or drill for each procedure. Using disposable accessories reduces handpiece wear, improves surgical cutting, and ensures quality patient care. Do not repackage or reuse blades, burs, or drills. CAUTION: Dull burs and saw blades are major contributors to problems with powered surgical instruments. They require the surgeon to exert greater force, which increases stress, heat, and wear on gears, bearings, and other delicate mechanisms. Use of excessive force also increases the risk of thermal necrosis and overheating of the handpiece. It is almost impossible to determine when a blade is dull. Simply counting the number of uses is not adequate. While certain procedures cause relatively little wear on a blade, bur, or drill, other procedures, especially where the blade, bur, or drill scrapes against metal templates or retractors, produce immediate wear or damage to the teeth.

FOOT CONTROL The 9100-000 Foot Control is normally used with the throttleless motor module. However, it may also be used with the hand control motor modules by locking down the finger throttle lever on the motor: 1.Connect the pressure hose of the foot control to the Schrader connector on the nitrogen regulator. Adjust the air pressure to 80-100 p.s.i. 2.Connect the handpiece to the air hose. Insert the appropriate blade/bur. 3.Connect the handpiece air hose to the foot control. 4.Lock down the throttle lever of the handpiece in the “ON” or M position with the throttle locking ring (cat. #9010-000). 5.Operate the handpiece by pressing the foot control. Adjust pressure regulator to 120 p.s.i. (8 kg/cm2).

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MicroAire Instructional Manual ASSEMBLY AND OPERATION 1. Firmly hold the handpiece and insert the pneumatic hose into the back end of the handpiece. 2. If using a foot control, connect foot control. 3. If using a 1000 Series handpiece, attach the desired head module to the motor module, as follows: a. Retract the locking sleeve on the motor module. b.Visually align the pin on the head module with any slot in the motor module. c. Insert the head module and release the locking sleeve. d. Push on the module to complete insertion. e. Make sure the module is locked in place by gently pulling the head module. 4. Make sure the safety switch on the handpiece is in theL position. Insert cutting tool into handpiece making sure it is secure. (Different handpieces have different mechanisms for attaching these components. Please refer to the instructions specific to the handpiece). 5. If using a handpiece with hand throttle with the foot control, lock down the throttle lever of the handpiece in the “ON” or M position with the throttle locking ring (9010-000). Gently depress the foot control to activate the motor. WARNING: When using the foot control and a handpiece with a throttle lever, be careful not to activate the throttle while unplugging the foot control. 6. To operate the handpiece without the foot control, slide the safety lock to the “ON” or M position. Gently depress the throttle lever to activate the motor.

4

Pneumatic Handpieces CUTTING TECHNIQUE MicroAire 1000 Series handpieces are small, precise surgical instruments. They contain many tiny, delicate gears and mechanisms that produce their smooth, rapid cutting action. These instruments are suitable only for small bone work. CAUTION: Take the following precautions to avoid damaging the handpiece: When cutting, avoid excessive pressure on the handpiece. Use a light “pencil grip” and let the instrument do the work. Heavy force will rapidly wear the delicate components. Avoid plunging a saw blade straight into the bone and “burying” the blade. This will lock up the blade and prevent it from completing its stroke, damaging or possibly breaking the oscillating mechanism. Use a slight “back and forth” or “side to side” motion when cutting. This will keep the cut wide enough to permit the blade to complete its stroke and maintain speed. Continuous stalling of the motor will cause rapid heating of the handpiece. Avoid using a saw as a lever to complete a bone fracture. Also, take special care when making curved cuts to avoid locking the blade. Always keep the blade free to complete its stroke. When running a saw at full speed in free air, the blade may flex or whip at the tip when the speed reaches a resonant frequency. This is a result of the thinness of the blades (which is also a key to their fast cutting ability). Always begin the cut with the throttle set for moderate speed. After establishing the cut in the bone, advance the throttle to full speed. The blade will not flex in the bone.

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MicroAire Instructional Manual INSERTING BLADES, BURS, and TWIST DRILLS Each handpiece has its own mechanism for attaching the corresponding blades, burs, or twist drills. The following section contains specific instructions for each of the handpieces available with the 2000 and 1000 Series instrument systems.

1140, 1930, and 2120 Micro Drills The Micro Drill handpiece is the workhorse of small bone surgery. It is used for bone sculpting, drilling, wire passing, and reaming the intramedullary canals of small bones. This medium speed, high torque unit comes standard with a built-in, medium-length bur guard. MicroAire Micro Drills will accept the MicroAire ZB 100, 200, and 300 Series burs. If other burs are used, make certain that they are designed for use in orthopedic or oral surgery. The bur shaft diameter must be within the range of .0919” (2.3mm) to .0928” (2.4mm). WARNING: If burs of insufficient diameter are used, they may slip under load, resulting in rapid overheating, or, they may eject at great velocity, causing harm to patients or personnel. When using long or extra long burs, use the corresponding long (1100-005) or extralong (1100-006) bur guard to prevent whipping or shattering of burs.

Operating speed: 30,000 RPM

Torque: To insert a bur into a Micro Drill handpiece: 7.0 in. oz min. 1.If using the throttle-lever handpiece, move the safety lock to L. If using the handpiece with the foot control, take care to ensure that the foot control is not activated accidentally while inserting the bur.

2. If using long or extra long burs, use the long (1100-005) or extra long (1100-006) bur guard.

3. Twist the collet to the M position. OPEN

LOCK

WARNING:

5. Twist the nose collet to theL position.

Collet must be in fullL position to prevent overheating of the instrument.

6. Pull on the bur to make sure it does not slip loose. 4. Insert the bur.

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WARNING: DO NOT run drill without a bur or drill will overheat.

Pneumatic Handpieces 2130, 2910 and 2950 High Speed Drills The High Speed Drill handpiece is a well-balanced, high performance drill that provides high speed for bone sculpting, along with power for difficult osteotomies. MicroAire High Speed Drills will accept the MicroAire ZB 100 and 200 Series burs. If other burs are used, make certain that they are designed for use in orthopedic or oral surgery. The bur shaft diameter must be within the range of .0919” (2.3mm) to .0928” (2.4mm). WARNING: If burs of insufficient diameter are used, they may slip under load, resulting in rapid overheating, or, they may eject at great velocity, causing harm to patients or personnel. WARNING: DO NOT use burs with head diameter larger than 4.0 mm (.15”), as they may break and cause injury. Do not use twist drills. The High Speed Drills come with a medium length bur guard. When using long or extralong burs in the 2130 drill use the long bur guard (2910-011) or extra-long bur guard (2910-019) to prevent whipping or shattering of burs. When using long or extra-long burs in the 1910 drill, use the long bur guard (1910-011) or extra-long bur guard (1910-019). To insert a bur into a High Speed Drill handpiece: 1. If using the throttle-lever handpiece, move the safety lock toL. If using the handpiece with the foot control, take care to ensure that the foot control is not activated accidentally while inserting the bur. 2. If using long burs, unscrew the medium bur guard from the end of the nosepiece and replace with the long bur guard. If using extra-long burs, use the extra-long bur guard.

Operating speed: 90,000 RPM Torque: 2.5 in. oz min.

3. Twist the collet to theM position.

LOAD

4. Insert the bur. LOAD

RUN

5. Twist the nose collet to theL position. WARNING: Collet must be in fullL position to prevent overheating of the instrument. 6. Pull on the bur to make sure it does not slip loose. WARNING: DO NOT run drill without a bur or drill will overheat. 7

MicroAire Instructional Manual 1980 Jacobs Style Drill The 1980 Jacobs Style Drill handpiece is a low-speed, very high torque drill. By simply attaching this head module to a motor module, it is possible to use Jacobs style twist drills without changing to a wire/pin driver. The Jacobs Style Drill Head handpiece accepts MicroAire 8051 and 8054 Series Jacobs style twist drills with diameters between 1.0mm (.039”) and 4.0mm (.15”), up to 127mm (5”) in length. To insert a twist drill into the 1980 Jacobs Style Drill handpiece: 1. If using the throttle-lever handpiece, move the safety lock toL. If using the handpiece with foot control, take care to ensure that the foot control is not activated accidentally while inserting the drill bit.

2. Using a Jacobs chuck key, open the chuck to the desired size. Operating speed: 1,670 RPM Torque: 135 in. oz min.

3. Insert the twist drill, making sure that it seats properly.

4. Tighten the Jacobs chuck using the Jacobs chuck key. 5. Being careful of sharp drill flutes, pull on the drill bit to make sure it does not slip loose.

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Pneumatic Handpieces 1990 A.O. Synthes Style Drill The 1990 A.O. Synthes Style Drill handpiece is a low-speed, very high torque drill that allows the use of A.O. Synthes style twist drills. The 1990 A.O. Synthes Style Drill handpiece accepts any MicroAire 8053 Series quick coupling twist drills with diameters between 1.1mm (.05”) and 3.5mm (.14”), up to 127mm (5”) in length. To insert a twist drill in to the A.O. Synthes Style Drill handpiece: 1. If using the throttle-lever handpiece, move the safety lock toL. If using the handpiece with foot control, take care to ensure that the foot control is not activated accidentally while inserting the drill bit.

2. Retract the collar at the front of the handpiece. 3. Insert a quick connect A.O. Synthes type twist drill. 4. Make sure the drill is fully inserted and seated. 5. Release the collar to lock the drill in place.

Operating speed: 1,670 RPM Torque: 135 in. oz min.

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MicroAire Instructional Manual 1991 A.O. Synthes Style Micro-Mini Drill The 1991 A.O. Synthes Style Micro-Mini drill is a low-speed, high torque drill that allows the use of smaller drill bits. The 1991 drill accepts any microAire 2155 series drill bits, as well as other latch-style drill bits. Maximum recommended diameter used is 3.0mm. To insert a twist drill into the A.O. Synthes Style Drill handpiece: 1.If using the throttle-lever handpiece, move the safety lock toL. If using the handpiece with foot control, take care to ensure that the foot control is not activated accidentally while inserting the drill bit. 2. Retract the collar at the front of the handpiece. Operating speed: 3. Insert a latch type twist drill. 1,670 RPM 4. Make sure the drill is fully inserted and seated. 5. Release the collar to lock the drill in place. 6. Being careful of sharp drill flutes, pull on the drill bit to make sure it does not slip loose.

1992 A.O. Synthes Style Quick-Hex Drill The 1992 A.O. Synthes Style Quick-Hex drill is also a low-speed, high torque drill. This 1992 drill allows the surgeon to use a power screwdriver for inserting hex-style screws. the hex-style screwdriver drills can be purchase from A.O. Synthes. Maximum recommended diameter used is 2.0mm. To insert a twist drill into the A.O. Synthes Style Drill handpiece: 1. If using the throttle-lever handpiece, move the safety lock toL. If using the handpiece with foot control, take care to ensure that the foot control is not activated accidentally while inserting the drill bit. 2. Retract the collar at the front of the handpiece. 3. Insert a quick-Hex A.O. Synthes type drill. 4. Make sure the drill is fully inserted and seated. 5. Release the collar to lock the drill in place. 6. Being careful of sharp drill flutes, pull on the drill bit to make sure it does not slip loose.

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Operating speed: 1,670 RPM

Pneumatic Handpieces 1220 and 1922 Sagittal Saw The Sagittal Saw handpiece offers good control, power, and maneuverability for cutting transverse or wedge osteotomies. The Sagittal Saw handpiece can be used with a variety of ultra-thin, .3mm (0.10” ), straight, angled, bent, or offset blades, such as MicroAire’s 1200 Series blades. To insert a blade into the Sagittal Saw handpiece: 1. If using the throttle-lever handpiece, move the safety lock toL. If using the handpiece with the foot control, take care to ensure that the foot control is not activated accidentally while inserting the blade. 2.Open the blade locking lever to release the floating jaw. 3.Insert the blade between the floating jaw and the indexing pin.

4. Fit the hole in the blade over the indexing pin. 5. Close the locking lever.

Operating speed: 30,000 CPM Stroke: 6°

CAUTION: The blade hole must be seated over the indexing pin. If it is not, the head will be damaged when the locking lever is closed. DO NOT force the locking lever if excessive resistance is felt.

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MicroAire Instructional Manual 1950 Zimmer Style Sagittal Saw, Keyless The Zimmer Style Sagittal Saw handpiece is a powerful, heavy-duty saw for transverse or wedge osteotomies. The Zimmer Style Sagittal Saw is designed to drive longer, larger ZS Series sagittal saw blades. The blade can be positioned at any point along a 180° arc providing good visibility and optimal approach. To insert a blade into the Zimmer Style Sagittal Saw handpiece: 1. If using the throttle-lever handpiece, move the safety lock toL. If using the handpiece with the foot control, take care to ensure that the foot control is not activated accidentally while inserting the blade. 2. Depress push button and insert the blade between the two jaws making sure that the blade is fully seated over the indexing pins. 3. Release push button. Operating speed: 18,000 CPM Stroke: 7°

2250 Zimmer Style Sagittal Saw The Zimmer Style Sagittal Saw handpiece is a powerful, heavy-duty saw for transverse or wedge osteotomies. The Zimmer Style Sagittal Saw is designed to drive longer, larger ZS Series sagittal saw blades. The blade can be positioned at any point along a 180° arc providing good visibility and optimal approach. To insert a blade into the Zimmer Style Sagittal Saw handpiece: 1. If using the throttle-lever handpiece, move the safety lock to “SAFE”. If using the handpiece with the foot control, take care to ensure that the foot control is not activated accidentally while inserting the blade. 2. Insert the hex driver. 3.Turn the hex driver counterclockwise until there is a slight resistance. 4. Insert the blade in the space between the two jaws, making sure that the blade is fully seated. 5. Turn the hex driver clockwise to lock the blade. 6. Run the instrument for 10 seconds then retighten blade with hex driver. CAUTION: DO NOT overtighten.

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Operating speed: 18,000 CPM

Pneumatic Handpieces 1400 and 1945 Reciprocating Saw The powerful, quick cutting Reciprocating Saw handpiece is the instrument of choice for shaping, contouring, and preparing intramedullary canals of small bones. The Reciprocating Saw accepts a variety of specially designed thin blades (including any of MicroAire’s small 1400 Series blades or ZR blades) and rasps (including MicroAire’s ZR Series rasps). To insert a blade into the Reciprocating Saw handpiece: 1. If using the throttle-lever handpiece, move the safety lock toL. If using the handpiece with the foot control, take care to ensure that the foot control is not activated accidentally while inserting the rasp/blade. 2. Unscrew the locking collar two to four turns for a saw blade, four to six turns for a rasp. 3. Insert the rasp/blade, making sure it is fully seated. 4. Lock the rasp/blade by screwing the collar down until it is tight. 5. Pull the rasp/blade to check for tightness. 6. Run the instrument for 10 seconds then retighten collar.

Operating speed: 16,000 CPM Stroke: 2.5mm

NOTE: If a rasp becomes loose when the handpiece is running, it was not seated properly. Move the rasp from side to side several times, and then retighten the locking collar. WARNING: When operating the saw, be careful to retract or protect the patient’s tissue near the locking collar. Pinching the tissue between the collar and the body of the instrument can cause a severe bruise or friction burn.

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MicroAire Instructional Manual 1700, 1710 and 1970 Oscillating Saw The Oscillating Saw handpiece is useful for precise curves and straight osteotomies. The 1970 has an extended head for procedures where extra length provides better visibility. The Oscillating Saw handpiece accepts MicroAire 1700 Series saw blades, which are extra-thin blades with 36 teeth per inch in either a straight or bent style. To insert a blade into the Oscillating Saw handpiece: 1.If using the throttle-lever handpiece, move the safety lock toL. If using the handpiece with the foot control, take care to ensure that the foot control is not activated accidentally while inserting the blade. 2. Open the blade locking lever to release the floating jaw. 3. Insert the blade between the floating jaw and the indexing pin. 4. Fit the hole in the blade over the indexing pin. CAUTION: The blade hole must be seated over the indexing pin. If it is not, the head will be damaged when the locking lever is closed. Do not force the locking lever if excessive resistance is felt.

Operating speed: 30,000 CPM Stroke: 6°

5. Close the locking lever.

1740 and 1972 Oscillating Saw This saw was specially designed for foot surgery. A wide selection of straight, bend, and arc cutting blades (MicroAire’s ZO Series blades) are available for this special purpose handpiece. To insert a blade into the Oscillating Saw handpiece: 1. If using the throttle-lever handpiece, move the safety lock to L. If using the handpiece with the foot control, take care to ensure that the foot control is not activated accidentally while inserting the blade. 2. Loosen the head nut with the 1745-001 locking tool. 3. Insert the blade behind the washer (the washer goes next to the head nut) in any desired position. 4. Tighten the nut, and then pull on the blade to check the tightness. 5. Run the instrument for 10 seconds then retighten nut. NOTE: Blade must be placed behind the washer or instrument will be damaged. 14

Operating speed: 30,000 CPM Stroke: 6°

Pneumatic Handpieces 1976 Oscillating Saw The 1976 Oscillating Saw handpiece was specially designed for foot surgery. A wide selection of straight, bent, and arc cutting blades (MicroAire’s ZS Series oscillating blades) are available for this special purpose handpiece. To insert a blade into the Oscillating Saw handpiece: 1. If using the throttle-lever handpiece, move the safety lock to L. If using the handpiece with the foot control, take care to ensure that the foot control is not activated accidentally while inserting the blade. 2. Unscrew the collar and insert the blade between the two jaws, making sure that the blade is fully seated over the indexing pins. 3. Lock the blade by screwing the collar until it is finger tight.

Operating speed: 24,000 CPM Stroke: 8°

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MicroAire Instructional Manual 2600 Wire Driver The 2600 Wire Driver was designed for small bone surgery only. There is no reverse mode. The 2600 Wire Driver accepts four standard sizes of K-wires, from .028” (.7mm) to .062” (1.6mm) in diameter, like the MicroAire 1600 Series K-wires. These K-wires are 5 1/2” (140mm) in length and are packaged with matching wire guides. Or, use any standard K-wire up to 6” (152mm) in length with the appropriate MicroAire wire guide to hold and center the wire properly. Always use a new plastic wire guide of the proper size to fit the wire.

WARNING: Do not use threaded K-wires, C-wires, or cut wires. To insert a wire into the 2600 Wire Driver handpiece: 1. If using the throttle-lever handpiece, move the safety lock toL. If using the handpiece with the foot control, take care to ensure that the foot control is not activated accidentally while inserting the wire. 2. Gently turn the collet clockwise until it stops in the “LOAD” position. 3. Making sure that the correct end is inserted into the handpiece, use a twisting action to insert the wire guide into the nose of the handpiece. Do not actuate the throttle without a wire inserted.

Operating speed: 14,000 RPM Torque: 32 in. oz min.

4. Retract the collet located at the front of the wire driver and insert a clean K-wire. 5. Release the collet to hold the wire in place. 6. Test the wire gripping mechanism by aiming the handpiece downward, away from other personnel. WARNING: NEVER aim the 2600 Wire Driver at a person and actuate the throttle. To advance the wire, make sure that the collet is in the “LOAD” position, then pull back on the handpiece. The wire will automatically advance. The automatic grip mechanism of the 2600 Wire Driver securely holds the wire while it is being driven. To remove a wire that has been inserted into bone, gently turn the collet until it stops in the “RETRIEVE” position. Depress the lever and pull back to remove the wire. Do not reuse the wire during retrograde wire driving procedures. CAUTION: Remove the wire guide immediately after surgery. This is very important. If the guide is broken off inside the nose during cleaning or sterilization, the broken part cannot be removed except at the factory.

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Pneumatic Handpieces 1500 Micro Osteotome This handpiece contains a special linear impulse motor that impacts the output shaft at high speed. The result is a unique combination of power and sensitivity with almost no movement of the blade. Because of the high energy of the impact hammer, the retaining collar will generate heat after approximately 30 seconds of running time. However, there is no heating at the blade tip. To insert a blade into the Micro Osteotome handpiece: 1.Before inserting or removing a blade, move the safety lock on the throttle lever to “SAFE”. 2. Unscrew the retaining collar 1 or 2 turns only. 3. Insert blade into the collar with the blade slot vertical. Then twist the blade until you feel the slot slip over the indexing pin. Then tighten the collar firmly. NOTE: A moderate insertion force is required to overcome the resistance of the friction gripper ring in the retaining collar. NOTE: Check to ensure that the blade is fully inserted to the safeline on the collar by attempting to twist the blade in the collar. If you can rotate it freely, it is not seated over the indexing pin. Reinsert. OPERATION During operation, there is no visible movement of the blade (the impact hammer inside the handpiece moves). The cutting action is controlled by the pressure you exert through the handpiece. NOTE: If you desire slower cutting action, you may reduce the nitrogen pressure anywhere between 30-100 p.s.i. (2-7 kg/cm2). The Osteotome will function within this range of pressure.

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MicroAire Instructional Manual 1620 and 1625 Pencil Grip Wire Drivers The 1620 Pencil Grip Wire Driver is a precision instrument for small bone surgery only (e.g., fingers, toes, or face). It has no reverse. The 1625 Pencil Grip Wire Driver is a cannulated version of the 1620. It will take K-wires up to 9” in length. The Micro Wire Driver accepts special MicroAire 1600-020 series 5 1/2” (140 mm) K-wires with matching plastic guides that hold and center the wire. The four wire sizes available are .028”, .035”, .045”, and .062” (0.7 to 1.6 mm). MicroAire K-wires and matching guides are packed together, ready for use. The wire is gripped automatically when the throttle is actuated. Do not use threaded wire, C-wire, or cut-off wires. To insert a K-wire into the Pencil Grip Wire Driver: 1. Always use a fresh plastic wire guide that holds the wire with a light friction grip. 2. Be certain the wire is clean. During retrograde wire driving procedures, clean the wire to remove debris before reinserting it into the handpiece. 3. Insert the wire guide using a twisting action. 4. Test the wire gripping mechanism by aiming the handpiece downward, away from personnel. Operating speed: 3,000 RPM

WARNING: Never ever aim the wire driver hand piece at a person and actuate the throttle. If an air seal is damaged, or excessive air pressure is used, the wire can be forcibly ejected from the handpiece. 5. Do not actuate the throttle without a wire inserted. CAUTION: Remove the wire guide immediately after surgery. If the guide is broken off inside the nose during cleaning or sterilization, the broken part cannot be removed except at the factory.

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