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Hand and foot surgerySnap off screw system
Self-drilling and Self-tapping
HBS compression screw systemDouble threading for optimal compression
Scaphoid Bone Screws TITAN
Rev.
: 241
0201
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Sterilization Container 310 x 190 x 165 mm Lid and Bottom perforated
152162
Recommended Sterilization Container for Set Cat. No. M 47010 (are not included in the Set)
Graphic Case (Tray in Steel) for Set M 47000
TRAY-M 47010
HBS and Snap off Screw Implant and Instrument Set
M 47000
Instruments and implants
HBS/SNAP off System
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Scaphoid bone screws in TitanumDIN ISO 5832-3 HBS bone screw system Lid and Bottom perforated
Self-drilling and tapping Snap off ScrewØ 2.0 mm in Titanium DIN ISO 5832-3 (weil osteotomy)
Listing for Set M 47000
Graphic Case for HBS-Snap off Screw System Graphic Case (Tray in Steel) 1 M 47010
Graphic Case M 47010 inkludes:
Instruments for HBS-Snap off Screw System HBS - Guide Wire Ø 1.0 mm x Length 80 mm 4 47390
HBS - Cannulated Drill Bit Ø 2.1 mm / 3.3 mm 1 47400
HBS - Cannulated Drill Bit Ø 2.1 mm 1 47410
HBS - Screw Length Gauge 1 47420
HBS - Measuring Sleeve for Guide Wire 1 47430
HBS - Cannulated Screw Driver, Hexagonal 2.0 mm 1 47440
HBS - Screw Driver for Snap off Screws 1 47450
Screw Forceps 1 41840
Ø 3.0 mm Ti. HBS Screws, Cannulated Length 12 mm, Titanium 4 47120
Length 14 mm, Titanium 4 47140
Length 16 mm, Titanium 4 47160
Length 18 mm, Titanium 4 47180
Length 20 mm, Titanium 4 47200
Length 22 mm, Titanium 4 47220
Length 24 mm, Titanium 4 47240
Length 26 mm, Titanium 4 47260
Length 28 mm, Titanium 4 47280
Length 30 mm, Titanium 4 47300
Ø 2.0 mm Ti. Snap off Screws Length 11 mm, Titanium 4 47600
Length 12 mm, Titanium 4 47620
Length 13 mm, Titanium 4 47640
Length 14 mm, Titanium 4 47660
Pieces Cat. No.
Ø 4.0 mm Ø 3.0 mm
Ø 2.0 mm
4 Instruments and implants
12 mm 47120
14 mm 47140
16 mm 47160
18 mm 47180
20 mm 47200
22 mm 47220
24 mm 47240
26 mm 47260
28 mm 47280
30 mm 47300
Total Lenght Cannulated
Double threading for optimal compression
Design rationale and Main features
The compression Screw is easy to insert (over a guide wire) and provides efficient compression (through two separate threadings with different pitches, and an intermediate unthreaded section), thus ensuring quick, dependable internal fixation.
Indications
Distal and proximal metatarsal osteotomies SCARF osteotomy Uni and biocortical internal fixation (ex.: scaphoid) Small bone fusion
Cannulated screwSelf-tapping head
Self-tapping endØ 3.0 mm
Unthreaded section for compression
Distal pitch provides a 1 mm theoric compression
Ø 4.0 mm
12 mm 47130
14 mm 47150
16 mm 47170
18 mm 47190
20 mm 47210
22 mm 47230
24 mm 47250
26 mm 47270
28 mm 47290
30 mm 47310
Total Lenght non Cannulated
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11 mm 47600
12 mm 47620
13 mm 47640
14 mm 47660
Total Lenght in mm (without Snap off Shaft)
Inserter
Ø 2.0 mm
Screw
Sharp point for guiding and anchorage
Unthreaded section for self-compression
Snap off point
Low profile head with 3 notches for positive grip
Self-drilling, self-tapping corticocancellous thread
Design rationale and Main features
The Snap off Screw provides superior fixation: it saves time (no need for a pilot drill hole), and it is easy to use, safe (clean break), accurate (guide point), and efficient (self-compression).
The Snap off Screw consists of two parts: implant-able screw which provides firm anchorage inserter which allows powered insertion.
Indications
Weil osteotomy unicortical internal fixation
Self-drilling and self-tapping
6 Instruments and implants
HBS-Cannulated Drill BitØ 2.1 mm / 3.3 mm
47400
HBS-Cannulated Drill BitØ 2.1 mm
47410
HBS-Screw driver for Snap off Screws
47450
HBS-Screw Length Gauge
47420
HBS-Guide Wire GaugeØ 1.0 mm x Length 80 mm
47390
HBS-Cannulated Screw DriverHex. 2.0 mm
47440
Accessoires
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HBS-Measuring Sleevefor Guide Wire 47390
47430
Screw Forceps
41840
Scarf Bone Holding Forceps
9540
Inge 16.0 cm
1332500
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1 The procedure is performed using a dorsal intermetatarsal and/or transverse approach. After the two extensor muscles have been separated
Hohmann retractors are placed on both metatarsal sides. The metatarsophalangeal joint is dislocated between the
extensor digitorum longus and the extensor digitorum brevis.
A Hinge spreader is inserted to protect the extensor muscles and afford good exposure for the osteotomy.
Osteotomy is performed using an oscillating saw Make a 3 cm (approximately) horizontal cut parallel tothe
sole, to increase the interfragmental contact area and thus enhance healing.
Osteotomy results in spontaneous recession of the metatarsal head, which relieves tension on soft tissue.
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Grasp the metatarsal head with Kocher forceps Use the „Index Plus Minus“ formula and the Lelièvre Curve
to determine the amount of recession of the metatarsal head.
The metatarsal head must be held in the correct position for subsequent screw fixation.
3
Exposure
Osteotomy
Translation
Surgical Technique (Weil Osteotomy)
Application
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Bone peak is resected using Liston pliers. This allows deep flexion of the metatarsophalangeal joint.
It may be necessary to perform a Z-shaped release (Green technique) of the extensor muscles.
Insertion of the Snap off Screw
Resection of the Bone Peak
Connect the screw inserter to the power drill, and drive the screw into the metatarsal.
The inserter snaps off as soon as the screw head makes contact with the dorsal cortex.
If necessary, insertion of the screw can be completed with the special screwdriver (with 3 notches).
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Mattes Instrumente GmbH MedizintechnikHaldenstraße 27
D-78532 Tuttlingen-Nendingen
phone +49 7461 3643fax +49 7461 77399
jens.mattes@mattes-medizintechnik.comwww.mattes-medizintechnik.com
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