scaphoid bone screws titan

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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

7

2

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

3

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









Ø 2.0 mm Ti. Snap off Screws Length 11 mm, Titanium 4 47600




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

5

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

7

HBS-Measuring Sleevefor Guide Wire 47390

47430

Screw Forceps

41840

Scarf Bone Holding Forceps

9540

Inge 16.0 cm

1332500

8

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.

2

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

9

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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scaphoid bone screws titan

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