DE8813655U1 - Drilling and centering device for bone screws - Google Patents

Drilling and centering device for bone screws

Info

Publication number
DE8813655U1
DE8813655U1 DE8813655U DE8813655U DE8813655U1 DE 8813655 U1 DE8813655 U1 DE 8813655U1 DE 8813655 U DE8813655 U DE 8813655U DE 8813655 U DE8813655 U DE 8813655U DE 8813655 U1 DE8813655 U1 DE 8813655U1
Authority
DE
Germany
Prior art keywords
sleeve
drilling
bone
centering device
bone screws
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
DE8813655U
Other languages
German (de)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE8813655U priority Critical patent/DE8813655U1/en
Publication of DE8813655U1 publication Critical patent/DE8813655U1/en
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1735—Guides or aligning means for drills, mills, pins or wires for rasps or chisels

Landscapes

  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Dentistry (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)

Description

BeschreibungDescription

ein gttniges Oeieosyntheseverfahren ist die Zugechraube. Hierbei wiird in die eine Körtlkalis dee Wiochens ein Gleitloch, das dem AuQendurchmeeeer den Schraube entepricht, gebonrt.A common osteosynthesis method is the tension screw. In this case, a sliding hole is drilled into one of the bones of the spindle, which corresponds to the outer diameter of the screw.

1 «1 "

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< · till< · till

' H ti · ·' H ti · ·

In dieses wird eine Zentrtehülse gesteckt über die dann in der Gegenkortl kalis das Loch für den Gewindeschnitt gebohrt wird. Hierbei tonn es durch Versetzen des Bohrers zu Ungenauig ketten am Bohrtoch für den Qewindeachnitt kommen. Die Gewindegänge können so nieht AMftkt oeeehnltt*n werden und die Zugschraube greift dann eventuel nieht stark genug in die Gegenkortlkalis ein. Besonders beim Anbringen von Schrauben au« Btomaterial ist ein sauberer Gewindeschnitt für ein sicheres Eingreifen der Schraube wichtig.A center sleeve is inserted into this, through which the hole for the thread cut is then drilled in the counter-cortex. In this case, moving the drill bit can lead to inaccuracies in the drill bit for the thread cut. The threads cannot be tightened properly and the tension screw may not engage the counter-cortex strongly enough. A clean thread cut is particularly important when attaching screws to plastic material to ensure that the screw engages securely.

Wird jedoch die Zentrlehülse In dte erste Bohrhülse geschoben, sodaß sie ein Stück aus dieser hinausragt und das zweite Bohrloch über diese gut zu führende Bohrhilfe gebohrt, fluchten dta beiden Bohrlöcher mit genügender Genauigkeit, daß ein sicheres Eingreifen der Knochenschraube gewährleistet ist.However, if the center sleeve is pushed into the first drill sleeve so that it protrudes a little from it and the second drill hole is drilled using this easy-to-guide drilling aid, the two drill holes are aligned with sufficient precision to ensure that the bone screw engages securely.

Ein schief geschnittener Gewindegang bei eirom schief gebohrten Bohrloch kann bet Schrauben aus Biomaterlal ein Ausbrechen von Schraubenwindungen provozieren und den sicheren Halt gefärden. Damtt dte Zentrierhülse beim Bohren nicht mitgedreht wird, sind die beiden Hülsen mit einem Gesperre versehen.A crookedly cut thread in a crookedly drilled hole can cause screw threads to break off in biomaterial screws and endanger the secure hold. To prevent the centering sleeve from turning during drilling, the two sleeves are fitted with a locking mechanism.

In der Zeichnung ist der Erfindungsgegenstand im Querschnitt gezeigt.The drawing shows the subject matter of the invention in cross section.

Fig. I Die Bohrhülse (1 ) für das Gleittoch ist mit einem Handgriff ( 2 ) versehen. In die Bohrhülee ( 1 ) ist die Zentrierhülse ( 3 ) &bull; auber eingepaßt. Ein Bolzen ( 4 ) in einer Nut ( 5 ) verhindert ein Verdrehen der Hülsen.Fig. I The drilling sleeve (1) for the sliding drill is provided with a handle (2). The centering sleeve (3) is fitted neatly into the drilling sleeve (1). A bolt (4) in a groove (5) prevents the sleeves from twisting.

Claims (1)

Christoph Haas München, den 29. 10. 1988 Frauenstr. 20 Manchen 5 Bohr- und Zentriergerät für Knochenschrauben SchutzansprücheChristoph Haas Munich, 29 October 1988 Frauenstr. 20 Manchen 5 Drilling and centering device for bone screws Protection claims 1. Bohr- und Zentrtergerät für Knochenschrauben, insbesondere aus Biomaterial,1. Drilling and centering device for bone screws, especially made of biomaterial, 1.1 dadurch gekennzeichnet, daß eine Hülse derart mit einem Handgriff versehen ist, das über diese Hülse ein Maschienenbohrer exakt aufgesetzt und geführt werden kann,1.1 characterized in that a sleeve is provided with a handle in such a way that a machine drill can be precisely placed and guided over this sleeve, 1.2 dadurch gekennzeichnet, daß die Hülse an ihrem Khochennahenendbe «itch mit einer Zähnelung versehen ist, die ein festes und verschiebesicheres Aufsetzen des Geräts und damit ein exaktes Anbohren des Knochens ermöglicht, 1.2 characterized in that the sleeve is provided with a toothing at its end near the bone, which enables the device to be placed firmly and securely in place and thus enables precise drilling into the bone, 1.3 düurch gekennzeichnet, daß in diese Hülse eine zweite Hülse bei genauer Passung eingesetzt werden kann, die ein zentriertes Bohren eines kleineren Bohrlochs ermöglicht,1.3 characterized in that a second sleeve can be inserted into this sleeve with a precise fit, which enables a centered drilling of a smaller borehole, 1.4 dadurchgekenneeichnt. daß die zweite Hülse ( Zentrierhülse ) aus* der ersten Bohrhülse am Knochennahen Endbereich ein Stück herausragt,1.4 characterized by the fact that the second sleeve (centering sleeve) protrudes slightly from* the first drill sleeve at the end area closest to the bone, 1.5 daduch gekennzeichnet daß die beiden Hülsen mit einem Gesperre versehen sind, das ein Mitdrehen der inneren Hülse währen des Bohrvorgangs verhindert.1.5 characterized in that the two sleeves are provided with a locking mechanism that prevents the inner sleeve from rotating during the drilling process. &bull; Ill Il&bull; Ill Ill I f I IIII f I III
DE8813655U 1988-10-31 1988-10-31 Drilling and centering device for bone screws Expired DE8813655U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8813655U DE8813655U1 (en) 1988-10-31 1988-10-31 Drilling and centering device for bone screws

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE8813655U DE8813655U1 (en) 1988-10-31 1988-10-31 Drilling and centering device for bone screws

Publications (1)

Publication Number Publication Date
DE8813655U1 true DE8813655U1 (en) 1989-01-12

Family

ID=6829432

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8813655U Expired DE8813655U1 (en) 1988-10-31 1988-10-31 Drilling and centering device for bone screws

Country Status (1)

Country Link
DE (1) DE8813655U1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0460447A1 (en) * 1990-06-06 1991-12-11 Synthes AG, Chur Compression drill guide
EP0495488A2 (en) * 1991-01-15 1992-07-22 Pfizer Hospital Products Group, Inc. Surgical drill guide
EP0830844A1 (en) * 1993-01-04 1998-03-25 Axel Dr. Kirsch Implanting tool for fixation nail
DE19719052C1 (en) * 1997-05-06 1998-08-06 Thomas Dr Gausepohl Marrow-chamber-preparation awl for hip-pinning

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0460447A1 (en) * 1990-06-06 1991-12-11 Synthes AG, Chur Compression drill guide
EP0495488A2 (en) * 1991-01-15 1992-07-22 Pfizer Hospital Products Group, Inc. Surgical drill guide
EP0495488A3 (en) * 1991-01-15 1992-10-21 Pfizer Hospital Products Group, Inc. Surgical drill guide
EP0830844A1 (en) * 1993-01-04 1998-03-25 Axel Dr. Kirsch Implanting tool for fixation nail
DE19719052C1 (en) * 1997-05-06 1998-08-06 Thomas Dr Gausepohl Marrow-chamber-preparation awl for hip-pinning
US6143012A (en) * 1997-05-06 2000-11-07 Orthofix S.R.L. Intramedullary awl assembly for preparation for a femoral-style nailing

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