Screw Removal Set Technique Guide
Contents
1. Cruciform 1 0 mm 1 3 mm 1 5 mm 2 0 mm and 2 4 mm The set contains instruments for removing the following men screws j Cortex screws Cancellous bone screws Shaft screws Cannulated screws Locking screws Locking bolts 2 Synthes Screw Removal Set Technique Guide To remove intact screws Hex screwdriver shafts StarDrive screwdriver shafts Cruciform screwdriver shafts To remove broken screws Hollow reamer use counterclockwise to expose deeply seated broken screw shafts Extraction bolts use counterclockwise to remove exposed broken screw shafts The following table shows which extraction instruments can be used to remove the various screw sizes If several instruments can be used select the one with the smallest external diameter Hollow reamer and extraction bolt for screw diameter and drive recess Screw diameter and drive recess Recess e t e e e e E O ye UO g E a was TTA 8 c8 24 8 d G EI IO e I e EJES El IJE VY nN TY Ia Nn xS N o l ce Il ee px lhe le see S el eleleleleletle c E t t E E amp E E e jue o je ps p T NI nN w ni NIAN 309 150 o e e e 2 7 mm T8 StarDrive 2 7 mm T15 StarDrive 3 5 mm 2 5 mm Hex 3 5 mm T15 StarDrive 3 9 mm 2 5 mm H2. 309 200 e e 309 250 e o o e 309 035 olo o o o 309450 e o o 9i e 9 309 065 e 309 090 309 190 e e e 309 290 e e o e o e 309 039 e e o o ee 309 490 e e 9 309 069 e o o Grips in the cannulation of the cannulated screw Synthes 5 Preoperative Planning and Preparation Preoperative planning To ensure that the appropriate screw removal instruments are obtained the surgeon should have the following information before implant removal Implant manufacturer Implant type Time of implantation Material steel titanium Recess geometry and dimension of the screws hex StarDrive or cruciform Screw diameter Any visible damage to the implant e g broken screw shaft 1 Clean screw recess Instrument 319 39 Sharp Hook Optional instrument 03 900 001 Straight Sharp Hook Before removing screws clean the screw recess Free the screw recess from ingrown scars and bone tissue using the sharp hook to ensure that the screwdriver can be fully inserted Check the condition and the geometry of the recess of the exposed screwhead Note Use the sharp hook to clean the recess if the soft tissue is not deep If the screw is deep use the straight sharp hook 6 Synthes Screw Removal Set Technique Guide Rem
3. L TU E v 14 Synthes Screw Removal Set Technique Guide 2 Prepare for drilling Optional instruments 03 607 025 2 5mm Drill Sleeve Clip on for 03 607 110 03 607 035 3 5 mm Drill Sleeve Clip on for 03 607 110 03 607 040 4 0 mm Drill Sleeve Clip on for 03 607 110 03 607 048 4 8mm Drill Sleeve Clip on for 03 607 110 03 607 060 6 0 mm Drill Sleeve Clip on for 03 607 110 03 607 110 Drill Suction Device 309 0048 4 0 mm Carbide Drill Bit sterile 309 006S 6 0 mm Carbide Drill Bit sterile 309 5038 2 5 mm High Speed Drill Bit sterile 309 5048 3 5 mm High Speed Drill Bit sterile 309 506S 4 8 mm High Speed Drill Bit sterile Drilling screws can cause drill chips that should be suctioned away It is also important to cool the drill bit during the drilling process The drill suction device allows efficient aspiration of the drill chips while simultaneously cooling the drill bit Before drilling attach the appropriate drill sleeve to the drill suction device Then connect the drill suction device to the irrigation system and the vacuum pump To release the drill sleeve press the side flange Synthes 15 Removal of Screws with Damaged Recesses Option 2 Screwdriver and conical extraction screw turn freely in the recess continued 3 Drill screw recess Optional instruments 03 607 040 4 0 mm Drill Sleeve Clip on for 03 607 110 03
4. 607 060 6 0 mm Drill Sleeve Clip on for 03 607 110 03 607 110 Drill Suction Device 309 0048 4 0 mm Carbide Drill Bit sterile 309 006S 6 0 mm Carbide Drill Bit sterile Switch on the rinsing equipment and the vacuum pump Position the drill suction device on the relevant screw Insert the drill bit into the drill sleeve start the drill then begin drilling Carefully predrill the screw recess Note Do not interrupt the water supply Ensure that the supply and waste hoses are not bent Important information on drilling with metal drill bits Drill bits may not be reprocessed or resterilized They are designed for single use only Metal drill bits are hard and brittle To prevent breakage start drilling with the drill bit already revolving and main tain the chosen drill axis throughout the entire drilling process When drilling cool with the drill suction device and aspirate the drill chips Refer to page 21 for selection of appropriate drill bit 16 Synthes Screw Removal Set Technique Guide 4 Remove screw Instruments 309 510 Conical Extraction Screws 1 309 530 393 105 Small Universal Chuck with T Handle Remove the screw with the conical extraction screw as described on page 13 _ E Synthes 17 Removal of Jammed Screws 1 Remove broken instrument and screw Instruments 319 39 Sharp Hook 398 65 Forceps for Screw
5. Bits sterile 309 0048 4 0 mm 309 006S 6 0 mm Spare Reamer Tubes 309 038 for Hollow Reamer 309 035 309 068 for Hollow Reamer 309 065 309 080 for Hollow Reamer 309 150 309 180 for Hollow Reamer 309 200 309 280 for Hollow Reamer 309 250 309 480 for Hollow Reamer 309 450 Spare Centering Pin 309 070 for Hollow Reamer 309 150 309 170 for Hollow Reamer 309 200 309 270 for Hollow Reamer 309 250 309 370 for Hollow Reamer 309 035 309 470 for Hollow Reamer 309 450 309 670 for Hollow Reamer 309 065 High Speed Drill Bits sterile 309 5035 2 5 mm 309 5048 3 5mm 309 506S 4 8mm Synthes 27 Screw Removal Set 01 240 001 Graphic Case 60 240 001 Instruments 03 607 025 03 607 035 03 607 040 03 607 048 03 607 060 03 607 104 03 607 106 03 607 110 03 900 001 03 900 002 03 900 011 03 900 013 03 900 022 03 900 032 03 900 042 03 900 044 309 039 309 069 309 090 309 190 309 290 309 490 209 035 309 065 309 150 309 200 309 290 309 450 Graphic Case for Screw Removal Set Drill Sleeve Clip ons for 03 607 110 2 5mm 3 5mm 4 0 mm 4 8mm 6 0 mm Carbide Drill Bit Extensions 4 0mm 6 0 mm Drill Suction Device Straight Sharp Hook AO Coupling Extension Shaft Screw Removal Forceps small Screw Removal Forceps large 2 4 mm Cruciform Screwdriver Shaft 100 mm 4 0 mm Hexagonal Screwdriver Shaft 100 mm T25 StarDrive Screwdriver Shaft 100 mm TAO StarDrive Screwdriver S
6. Handle with mini quick coupling Large Handle with quick coupling Screwdriver Blades self retaining StarDrive short 1 3 mm 1 5 mm 2 0mm 4 0 mm Hexagonal Screwdriver Cruciform Screwdriver Shafts self retaining 1 0 mm 1 3mm 1 5 mm 2 0 mm Small Hexagonal Screwdriver Shaft StarDrive Screwdriver Shaft quick coupling T15 StarDrive Screwdriver Shaft T25 self retaining 165 mm Large Hexagonal Screwdriver with T handle Large Hexagonal Screwdriver Shaft 2 4 mm StarDrive Screwdriver Shaft Cannulated Driver for Threaded Washers for 3 0 mm cannulated screws Cruciform Screwdriver Shaft Sharp Hook 387 34 293 105 398 65 398 651 399 68 Conical Extraction Screw Small Universal Chuck with T handle Forceps for broken screw removal Narrow Screw Remowval Pliers Hollow Gouge for broken screw exposure Also Available 309 0045 309 0065 309 038 309 068 309 080 309 180 309 280 309 480 309 070 309 170 309 240 309 370 309 470 309 670 309 5035 309 5045 309 5065 4 0 mm Carbide Drill Bit sterile 6 0 mm Carbide Drill Bit sterile Spare Reamer Tubes for Hollow Reamer 309 035 for Hollow Reamer 309 065 for Hollow Reamer 309 150 for Hollow Reamer 309 200 for Hollow Reamer 309 250 for Hollow Reamer 309 450 Spare Centering Pins 309 150 309 200 309 250 309 035 309 450 309 065 for Hollow Reamer for Hollow Reamer for Hollow Reamer for Hollow Reamer for Hollow Reamer a M M
7. M M SN for Hollow Reamer High Speed Drill Bits sterile 2 5 mm 3 5 mm 4 8 MM Synthes 29 SYNTHES 2009 Synthes Inc or its affiliates All rights reserved Synthes USA Synthes Canada Ltd 1302 Wrights Lane East 2566 Meadowpine Boulevard West Chester PA 19380 Mississauga Ontario L5N 6P9 Telephone 610 719 5000 Telephone 905 567 0440 To order 800 523 0322 To order 800 668 1119 Fax 610 251 9056 Fax 905 567 3185 www synthes com Synthes is a trademark of Synthes Inc or its affiliates Printed in U S A 6 12 J8569 C
8. Removal If a broken instrument is in the recess first attempt to remove the broken part of the instrument with a sharp hook and or forceps for screw removal If this attempt fails proceed with the next step 18 Synthes Screw Removal Set Technique Guide 2 Prepare for drilling Optional instruments 03 607 025 2 5 mm Drill Sleeve Clip on for 03 607 110 03 607 035 3 5 mm Drill Sleeve Clip on for 03 607 110 03 607 040 4 0 mm Drill Sleeve Clip on for 03 607 110 03 607 048 4 8 mm Drill Sleeve Clip on for 03 607 110 03 607 060 6 0 mm Drill Sleeve Clip on for 03 607 110 03 607 110 Drill Suction Device 309 0048 4 0 mm Carbide Drill Bit sterile 309 006S 6 0 mm Carbide Drill Bit sterile 309 5035 2 5 mm High Speed Drill Bit sterile 309 504S 3 5 mm High Speed Drill Bit sterile 309 5065 4 8 mm High Speed Drill Bit sterile Select the appropriate drill bit and attach it to the universal chuck of the power tool and tighten see page 21 If the screw is deep the carbide drill bit extensions can be used Before drilling attach the appropriate drill sleeve to the drill suction device Then connect the drill suction device to the irrigation system and the vacuum pump To release the drill sleeve press the side flange Note The use of the drill suction device allows efficient aspiration of the drill chips while simultaneously cooling the drill bit S
9. good drilling properties adequate drilling properties not recommended Commercially pure CP titanium and titanium alloys Ti 6AI 7Nb and Ti 6Al AV Synthes 21 Instruments 03 607 104 4 0 mm Carbide Drill Bit Extension 03 607 106 6 0 mm Carbide Drill Bit Extension 03 607 110 Drill Suction Device Drill Sleeve Clip ons for 03 607 110 03 607 025 2 5mm 03 607 035 3 5mm 03 607 000 4 0mm 03 607 048 4 8mm 03 607 060 6 0mm 03 900 001 A Straight Sharp Hook 03 900 002 AO Coupling Extension Shaft 22 Synthes Screw Removal Set Technique Guide Conical Extraction Screws MM 03 900 011 Small Screw Removal Forceps 03 900 013 Large Screw Removal Forceps Hollow Reamers complete 309 035 for 3 5 mm and 4 0 mm screws 309 065 for 6 5 mm and 7 0 mm screws 309 150 for 1 5 mm screws 309 200 for 2 0 mm screws 309 250 for 2 7 mm screws 309 450 for 4 5 mm screws Extraction Bolts 309 039 for 3 5 mm and 4 0 mm screws 309 069 for 6 5 mm and 7 0 mm screws 309 090 for 1 5 mm screws 309 190 for 2 0 mm screws 309 290 for 2 7 mm screws 309 490 for 4 5 mm and 5 0 mm screws 309 501 for threaded washers 309 510 for 1 5 mm and 2 0 mm screws 309 520 for 2 7 mm 3 5 mm and 4 0 mm screws 309 521 for 3 5 mm screws 309 530 for 4 5 mm and 6 5 mm screws 387 34 for 7 3 mm cannulated screws 310 89 Countersink for 3 5 mm Cortex and 4 0 mm Cancellous Bone Screw Synthe
10. D m pee 24 J Q am T oving Instruments Tor rem Synthes screws Technique Guide O ei MM NEM E EU gt approved by the AO Foundation Table of Contents Introduction Screw Removal Set 2 Surgical Technique Preoperative Planning and Preparation 6 Removal of Intact Screws 7 Removal of Broken Screws 9 Removal of Screws with Damaged Recesses 13 Removal of Jammed Screws 18 Product Information Instruments 27 Set List 27 Synthes Screw Removal Set Instruments for removing Synthes screws The Screw Removal Set contains instruments required for removing intact screws or damaged screws that are difficult to remove Modular design The modular design ensures that the assembly is ideally suited to requirements and the set is always complete The clear layout makes the instruments easy to locate thereby reducing the danger of selecting the wrong instrument Comprehensive system All existing Synthes screws can be removed with the instru ments supplied in the Screw Removal Set This prevents delays caused by missing or incorrect instruments The screw removal set contains screwdriver shafts for all Synthes screw sizes and drives as well as extraction instruments for removing broken and damaged screws The set contains instruments to remove all screws with the following drive recesses Hex 1 5 mm 2 5 mm 3 5 mm and 4 0 mm StarDrive T4 T5 T6 T8 T15 T25 and T40 AI
11. e screw directly below the head When all screws have been removed the plate internal fixator can be removed 8 Synthes Screw Removal Set Technique Guide Removal of Broken Screws Option 1 Screw shaft is exposed 1 Expose the screw shaft Instrument 399 68 Gouge Optional instrument 398 651 Narrow Screw Removal Pliers If the screwhead is broken and the shaft is visible on the surface or slightly below the surface use the gouge to remove the bone surrounding the screw shaft to approxi mately 5 mm in depth Note The narrow screw removal pliers can be used to expose the screw shaft by using the slightly opened pliers as an awl sharp edges on the outside of the clamps 2 Remove screw Instrument 398 65 Forceps for Screw Removal Optional instrument 398 651 Narrow Screw Remowval Pliers Remove the screw with the forceps for screw removal Important Remove the screw stump by rotating it counterclockwise do not pull or bend Note The narrow screw removal pliers can be used to remove the screw and require less space to grasp the screw shaft than the forceps for screw removal Synthes 9 Removal of Broken Screws Option 2 Screw shaft is not exposed 1 Expose the screw shaft Instruments 309 150 Hollow Reamers 309 450 310 89 Small Countersink 310 99 Large Countersink 311 431 Handle with
12. ea cL ea TI cL cL cL a IL L I a a RN c gio gi s E s gEI E E E R8 E E E RI SIE E e a E Vo WY N E E W e e LO LO O e oa ES siis E LO LO LO LO mI n LA N zt ay m Slol Elali lela b lalaila iale majalla l E E E t t 5 Ww TS p p D LN LN o o LN Oo LN E screws N N N N N N m m m em sr it LA LA O o 309 510 e e e e e e e e e o e e e o M 309 520 e e e e e e e e e e e e e e e e a 309 530 e e e lella la aa 309 521 e e e e e e e Expert nail end caps 4 Synthes Screw Removal Set Technique Guide To remove cannulated screws Extraction instruments for cannulated screws The following table shows instruments that are required for the removal of broken cannulated screws The instruments shown in parentheses are suitable if the Sas t e eee ee break is in the shaft Screw diameter and drive recess Extraction instruments 3 0 mm HCS T8 StarDrive 5 0 mm locking 4 0 mm Hex 2 4 mm T8 StarDrive 3 0 mm Cruciform 3 5 mm 2 5 mm Hex 4 0 mm 2 5 mm Hex 4 5 mm 3 5 mm Hex 6 5 mm 4 0 mm Hex 7 0 mm 3 5 mm Hex 7 3 mm 4 0 mm Hex 309 510 e o e e 309 520 309 530 o e e e 309 521 e e 209 52 e 309 510 o e e 387 34 309 150 e e
13. ex 3 9 mm 3 5 mm Hex 4 0 mm 2 5 mm Hex 4 0 mm 3 5 mm Hex 4 0 mm T25 StarDrive 4 5 mm 3 5 mm Hex 4 9 mm 3 5 mm Hex 5 0 mm 3 5 mm Hex ole gt gt O ITO a o o pan 4 Un Un LO LO N N ee e e e e Oo LO WO 6 5 mm 3 5 mm Hex 309 200 e e 309 250 e e 309 035 309 450 Hollow 309 065 reamers 309 090 e e 309 190 o e e 309 290 e e e e e 309 039 e e e e e e l 309 490 ej ja a Extraction bolts 309 069 e e Synthes 3 Screw Removal Set Instruments for removing Synthes screws To remove screws with a damaged screw recess Conical extraction screws use counterclockwise to remove screws with a damaged screw recess Note The conical tip of the extraction screw grasps the screw recess and the screw can be removed by turning coun terclockwise The table below shows screw diameter and geometry recess size It is not always possible to clearly allocate the extraction screw Note Always use the extraction screw with the largest possible diameter Conical extraction screw for screw diameter and drive recess Screw diameter and drive recess Recess e ew e ew ew ee e e t ee et x lt x D D x D gt x gt x lt x lt x x lt gt x x x gt gt x D D Ll D E im D re D D D D ra D D D e T D al L gm a L
14. haft 100 mm Extraction Bolts for 3 5 mm and 4 0 mm screws for 6 5 mm and 7 0 mm screws for 1 5 mm screws for 2 0 mm screws for 2 7 mm screws for 4 5 mm screws Hollow Reamers complete for 3 5 mm and 4 0 mm screws for 6 5 mm and 7 0 mm screws for 1 5 mm screws for 2 0 mm screws for 2 7 mm screws for 4 5 mm screws mmm ALLEI Note For additional information please refer to package insert For detailed cleaning and sterilization instructions please refer to http Awww synthes com cleaning sterilization or to the below listed inserts which will be included in the shipping container Processing Synthes Reusable Medical Devices Instruments Instrument Trays and Graphic Cases DJ1305 Processing Non sterile Synthes Implants DJ1304 28 Synthes Screw Removal Set Technique Guide Instruments continued 309 501 309 510 309 520 2309 32 309 530 210 69 310 95 310 99 311 01 311 431 313 022 313 032 313 842 313 93 313 991 313997 313 995 314 03 314 116 314 119 314 13 314 15 314 451 314 464 314 465 319 39 Conical Extraction Device for threaded washers Conical Extraction Screws for 1 5 mm and 2 0 mm cortex screws for 2 7 mm and 3 5 mm cortex screws for 3 5 mm screws for large screws and 4 9 mm bolts Countersink for 3 5 mm cortex and 4 0 mm cancellous bone screws Handle with mini quick coupling stainless steel Countersink for 4 5 mm cortex screws
15. m e E Optional instrument 03 900 002 AO Coupling Extension Shaft Connect the conical extraction screw to the handle with quick coupling Note If the screw is deep in the tissue attach the AO coupling extension shaft Insert the tip of the conical extraction screw into the screw recess and hold it as vertical as possible Turn counterclock wise exerting pressure until the extraction screw grasps into the screw recess Continue to turn counterclockwise to remove the screw Important During insertion ensure that enough axial pressure is exerted and maintain alignment with the axis of the screw Only use sharp edged extraction screws recom mendation one extraction Do not use extraction screws with power tools Synthes 13 Removal of Screws with Damaged Recesses Option 2 Screwdriver and conical extraction screw turn freely in the recess 1 Remove screw If the screwdriver and the conical extraction screw wear down the recess of the screw and turn freely in the recess it may be possible to lightly predrill the screw recess to anchor the conical extraction screw deeper p aL RN uL 1A LE io mmn yix af y Mai Jj yeh uw IL mee o BH 4 A we wa LL Tai A Mt Pre M 3 ae re e et aw CAE P AT m te n i L 14 wy bed j LU rf A d we ee A LI et AU an 4
16. ntering pin approximately 5 mm below the screw Note If the screw is deep in the tissue attach the AO coupling extension shaft Synthes 11 Removal of Broken Screws Option 2 Screw shaft is not exposed continued 2 Remove screw Instruments 309 039 Extraction Bolts 309 290 311 431 Handle with quick coupling Optional instrument 03 900 002 AO Coupling Extension Shaft Connect the extraction bolt to the handle with quick coupling Note If the screw is deep in the tissue attach the AO coupling extension shaft Position the extraction bolt above the broken screw Rotate counterclockwise while maintaining pressure and holding the extraction bolt as vertical as possible This ensures a secure connection between the conical shape of the thread of the extraction bolt and the shaft of the screw Turn coun terclockwise until the screw shaft is completely removed Note The hollow reamer and the extraction bolt are left turning to be turned counterclockwise During insertion ensure that enough axial pressure is exerted and maintain alignment with the axis of the screw 12 Synthes Screw Removal Set Technique Guide Removal of Screws with Damaged Recesses Option 1 Screwdriver turns freely in the recess 1 Remove screw Instruments 309 510 Conical Extraction Screws l 309 530 311 431 Handle with quick coupling Cn P PEL u
17. oval of Intact Screws 1 Remove screw Instruments 310 95 Handle with mini quick coupling Or 311 01 Handle with mini quick coupling 311 431 Handle with quick coupling 393 105 Small Universal Chuck with T Handle Optional instruments 03 900 002 AO Coupling Extension Shaft 03 900 011 Small Screw Removal Forceps 03 900 013 Large Screw Removal Forceps Connect the appropriate screwdriver shaft to a handle with quick coupling Note If the screw is deep in the tissue attach the AO coupling extension shaft Option Instead of using the handle with quick coupling a small universal chuck with T handle can be used Connect the mini fragment screwdriver shafts to the handle with mini quick coupling Synthes 7 Removal of Intact Screws 1 Remove screw continued Insert the screwdriver fully into the screw recess If necessary lightly tap the screwdriver with a hammer Important It is essential to ensure that the screwdriver shafts are not damaged and are inserted on the same axis as the screw to be removed The screw recess can be damaged if the screwdriver is not inserted straight or if it is blunt Unscrew the screw Note To ensure that the loosened screw is not lost in the soft tissues nor strips its thread in the bone the screw can be held in position by the screw removal forceps Guide the forceps along the screwdriver to the screwhead and grasp th
18. quick coupling Optional instrument 03 900 002 AO Coupling Extension Shaft If the screwhead is broken and the shaft is not visible or the screw fragment is deeply seated create an opening with the small or large countersink then use the hollow reamer The hollow reamer complete consists of three individual parts reamer tube centering pin and shaft To assemble the hollow reamer 1 Connect the centering pin and the shaft left hand thread 2 Screw the reamer tube over the centering pin left hand thread Important There is no thread connection between the centering pin and the shaft for hollow reamers 309 150 309 200 and 309 250 The reamer tube and the shaft are screwed together left hand thread 10 Synthes Screw Removal Set Technique Guide If the screw shaft has broken off less than approximately 5 mm below the bone surface the hollow reamer can also be used without the centering pin In this case only connect the reamer tube and the shaft left hand thread Note Only use instruments with sharp edges It is possible to use the hollow reamer with power tools but this should be done very carefully Connect the instruments with the handle with quick coupling Guide the centering pin into the canal of the broken screw and turn the hollow reamer counterclockwise Remove the centering pin when it reaches the screw fragment Then continue to turn the reamer without the ce
19. s 23 Instruments 210 95 Handle with mini quick coupling stainless steel 310 99 Countersink for 4 5 mm Cortex and 6 5 mm Cancellous Bone Screws 211 0 Handle with mini quick coupling 311 431 Large Handle with quick coupling StarDrive Screwdriver Shafts 03 900 042 T25 03 900 044 T40 313 922 1 3 mm self retaining 313 832 1 5 mm self retaining 213 942 2 0 mm self retaining 314 116 T15 self retaining 314 119 T25 self retaining 314 451 2 4 mm 212 93 Solid Hexgonal Screwdriver 4 0 mm width across flats uHD 24 Synthes Screw Removal Set Technique Guide Cruciform Screwdriver Shafts E 03 900 022 2 4 mm 313 991 1 0 mm self retaining 313 992 1 3 mm self retaining 313 993 1 5 mm 2 0 mm self retaining 314 465 for 3 0 mm cannulated screws Hexagonal Screwdriver Shafts 03 900 032 4 0 mm width across flats 314 03 small 2 5 mm width across flats 314 15 large 3 5 mm width across flats 314 13 Large Hexgonal Screwdriver with T Handle 314 464 Cannulated Driver for Threaded Washers SS oo eee for 3 0 mm cannulated screws 319 39 Sharp Hook 393 105 Small Universal Chuck with T Handle Synthes 25 Instruments 398 651 Narrow Screw Removal Pliers 398 65 Forceps for broken screw removal 399 68 Hollow Gouge for screw exposure 26 Synthes Screw Removal Set Technique Guide Also Available Carbide Drill
20. ynthes 19 Removal of Jammed Screws 3 Drill off screwhead Switch on the rinsing equipment and the vacuum pump Position the drill suction device on the relevant screw Insert the drill bit into the drill sleeve start the drill then begin drilling Carefully drill off the screwhead Align the axis of the drill with axis of the screw and maintain this alignment throughout the drilling process Drill until the screwhead is detached or removed from the screw shaft Note Do not interrupt the water supply Ensure that the supply and waste hoses are not bent Remove the plate when it is no longer held in place by any screws 20 Synthes Screw Removal Set Technique Guide 4 Remove remaining screw shaft Proceed as for a broken screw Note Select the carbide drill bit to drill out screws from titanium implants To remove broken instruments from the screw recess e g tips of screwdrivers extraction screws only use the carbide drill bits Screw sizes Drill bits Drill bits suitable for Drill Drill Implant X Instrument diameter type Titanium steel steel 3 5 mm 4 0 mm 309 5035 2 5mm High speed 3 5 mm 4 0 mm 4 5 mm 5 0 mm 309 5045 3 5mm High speed 3 5 mm 4 0 mm 4 5 mm 5 0 mm 309 004S 4 0 mm Carbide 4 5 0 mm 6 5 mm 7 0 mm 7 3 mm 309 506S 4 8mm High speed 5 0 mm 6 5 mm 7 0 mm 7 3 mm 309 006S 6 0 mm Carbide
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