DE8813655U1 - Drilling and centering device for bone screws - Google Patents
Drilling and centering device for bone screwsInfo
- 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
Links
- 238000005553 drilling Methods 0.000 title claims description 10
- 210000000988 bone and bone Anatomy 0.000 title claims description 8
- 239000012620 biological material Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 244000309464 bull Species 0.000 claims 1
- 239000000463 material Substances 0.000 description 1
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
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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t It I
• · I I (I· I I (I
< · 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.
Fig. I Die Bohrhülse (1 ) für das Gleittoch ist mit einem Handgriff ( 2 ) versehen. In die Bohrhülee ( 1 ) ist die Zentrierhülse ( 3 ) • 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)
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)
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 |
-
1988
- 1988-10-31 DE DE8813655U patent/DE8813655U1/en not_active Expired
Cited By (6)
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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