EP0722293A1 - Foret, broches de kirschner, fraises pour os, etc. pourvus d'un foret de ce type - Google Patents

Foret, broches de kirschner, fraises pour os, etc. pourvus d'un foret de ce type

Info

Publication number
EP0722293A1
EP0722293A1 EP94921616A EP94921616A EP0722293A1 EP 0722293 A1 EP0722293 A1 EP 0722293A1 EP 94921616 A EP94921616 A EP 94921616A EP 94921616 A EP94921616 A EP 94921616A EP 0722293 A1 EP0722293 A1 EP 0722293A1
Authority
EP
European Patent Office
Prior art keywords
section
drilling
bone
drill
milling body
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.)
Ceased
Application number
EP94921616A
Other languages
German (de)
English (en)
Inventor
Franz Bobst
Peter Griss
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.)
Endocare AG
Original Assignee
Endocare AG
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
Priority claimed from DE19949404630 external-priority patent/DE9404630U1/de
Application filed by Endocare AG filed Critical Endocare AG
Publication of EP0722293A1 publication Critical patent/EP0722293A1/fr
Ceased 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
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/842—Flexible wires, bands or straps
    • 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
    • A61B17/1613—Component parts
    • A61B17/1615—Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
    • 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
    • A61B17/1662—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body
    • A61B17/1671—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans for particular parts of the body for the spine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/56—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor
    • A61B17/58—Surgical instruments or methods for treatment of bones or joints; Devices specially adapted therefor for osteosynthesis, e.g. bone plates, screws, setting implements or the like
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/846—Nails or pins, i.e. anchors without movable parts, holding by friction only, with or without structured surface
    • A61B17/848—Kirschner wires, i.e. thin, long nails
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/909—Having peripherally spaced cutting edges
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T408/00—Cutting by use of rotating axially moving tool
    • Y10T408/89—Tool or Tool with support
    • Y10T408/909—Having peripherally spaced cutting edges
    • Y10T408/9095—Having peripherally spaced cutting edges with axially extending relief channel

Definitions

  • Drilling section and Kirschner wires, bone milling cutters or the like provided with such a drilling section.
  • the invention relates to a drilling section according to the preamble of claim 1, and to Kirschner wires, bone milling cutters, bone drills or the like provided with such a drilling section.
  • drilling sections are usually provided on various tools, which are used to produce such a hole.
  • Kirschner wires also known as bone chewing wires - are used in particular for wire extension in conjunction with an external fixator.
  • the wire extension is a method for establishing displaced fracture ends by overcoming an opposing muscle pull. The extension takes place by means of variable weight loading via steel wires drilled through bones and tensioned by means of brackets, namely so-called Kirschner wires.
  • Bone drills are of particular importance for the creation of implantation spaces. Care must be taken to ensure that the implantation space to be created in the bone is precisely defined. For this purpose, conventional drilling is first of all carried out using a separate drill. The bone cutter is then centered in the borehole and used.
  • the present invention is therefore based on the object of providing a drilling section with which a borehole can be formed in a bone without the remaining bone or the remaining bone tissue being impaired.
  • a feature of the drilling section that is essential to the invention is the diametrically flattened section.
  • this preferably encloses an angle of at most approximately 55-65 °, in particular approximately 60 °. If this angle is chosen to be smaller or larger than the predetermined range, either the efficiency of the drill section is lower or higher temperatures arise at the drill tip.
  • the proximal end of the shaft of a Kirschner wire or the like provided with a drilling section of the type mentioned has a surface or a section with a triangular or polygonal cross section for the torque-transmitting connection of a drilling machine or a hand lever or the like.
  • Cartilage or bone cutter is combined.
  • boreholes are conventionally first drilled, in which the respective milling tools are then centered and used.
  • the drilling section is preceded by a cylindrical milling body.
  • the pre-drilling and milling of the bone can be carried out in a single operation. This ensures high precision of the implantation space to be created.
  • the various work steps are combined into a single successive work step. It is particularly pointed out in this connection that the pre-drilling and milling can be carried out in a single operation with a drilling section which is not designed in the manner described above.
  • a cartilage or bone cutter is claimed as a separate invention, in which a cylindrical milling body is arranged on a rod-like shaft at the distal end, the shaft continues distally beyond the milling body and a drilling section is formed on this shaft extension.
  • a frustoconical milling body is arranged distally upstream of the cylindrical milling body.
  • Such a tool is suitable for the production of receiving bores for so-called tulip screws in vertebrae.
  • the screws mentioned are so-called transpedicular screws.
  • Such screws preferably have a frustoconical section between the threaded section and the tulip-shaped screw head, which, in cooperation with a correspondingly milled receiving space in the bone, ensures extremely high stability of the bone screw.
  • the conical section of the screw is effective in the area of the hard bone shell. In this embodiment, the threaded section of the bone screw no longer has to absorb lateral forces.
  • Figure 1 is an enlarged partial view of an embodiment of a drilling section in side view.
  • FIG. 2 is an enlarged partial view of the drilling section according to FIG. 1 in view in the direction II from FIG. 1;
  • FIG. 3 shows a schematic illustration of a Kirschner wire, in which a drilling section according to FIGS. 1 and 2 is arranged at the distal end;
  • Fig. 4 is a see-atic representation of a cartilage
  • Bone cutter in which a drilling section according to FIGS. 1 and 2 is arranged at the distal end.
  • the drilling section shown in FIGS. 1 and 2 comprises a round rod-like shaft 11, at the distal end of which a drilling tip 13 is arranged, which forms the distal alder of a section 14 which is flattened diametrically relative to the shaft center axis 15.
  • the flat sides formed here are identified by the reference numerals 16 and 17.
  • Flat side 16 extends in the region of the shaft center axis 15, while the opposite flat side 17 is spaced apart from the shaft center axis 15. According to FIG. 2, the one flat side 16, which also defines the cutting edge 19, extends through the shaft center axis 15. 2 is a flattened cone tip.
  • the flat side 16 is preferably also slightly spaced from the shaft center axis 15, in such a way that it lies relative to the shaft center axis on the side of the shaft center axis opposite the flat side 17.
  • the aforementioned distance is approximately 3/100 - 8/100 mm, in particular approximately 5/100 mm. This slight spacing from the shaft center axis has proven to be particularly advantageous with regard to the cutting effect.
  • the cutting edge 19 is sharpened. In the embodiment shown, the drilling section is drilled counterclockwise (arrow 18 in FIGS. 1 and 2) through the bone. Accordingly, the cutting edge 19 is located on the leading edge of the flat side 16 which extends to the drill tip.
  • the opposite edge of the flat side 16 is also sharpened, so that the drilling section can also be used when the connected drilling machine is in Clockwise rotates.
  • a compressed air drilling machine with a speed of 1200 to 2000 rpm is usually used as the drilling machine.
  • the drill tip 13 has a (partial cone) angle ⁇ . from about 55 ° to 65 °, in particular about 60 °. This angular range has proven to be optimal with regard to optimum drilling efficiency on the one hand and low temperature development on the other.
  • the surface of the drill tip 13, but also the other parts of the drill section 12, are preferably ground smooth.
  • the oblique transition surfaces between the flat sides 16, 17 of the drilling section 12 or of the section 14 on the one hand and the shaft 11 on the other hand are identified by the reference numbers 20 and 21, respectively.
  • the transition surfaces 20, 21 are each inclined towards the drill tip 13. This inclination is chosen so that a safe chip removal is guaranteed when drilling the bone outwards.
  • the transition surface 20 assigned to the flat side 16 is preferably shaped like a fillet, in particular as a quarter circle surface.
  • the length is a first
  • the thickness of the flattened end is (in this embodiment) between 1.0 and 2.5 mm.
  • the thickness of the section 14 increases in accordance with the diameter of the shaft 11, i.e. with a shaft diameter of 1.8 mm, the thickness of the flattened section 14 is approximately 0.8 mm, while with a shaft diameter of 8 mm the thickness of the flattened section 14 is approximately 2.4 mm.
  • the angle ⁇ is 60 ° in all of the aforementioned examples.
  • FIG. 3 shows the drill section described in FIGS. 1 and 2 in combination with a Kir ⁇ chner wire 10.
  • the round rod-like shaft 11 is chosen to be long to form the Kir ⁇ chner wire 10.
  • the shaft 11 is formed at the distal end of the Kir ⁇ chner wire 10 in the manner described above as a drilling section.
  • the proximal end of the Kir ⁇ chner wire 10 or the shaft 11 has a surface or a section 22 with a triangular or polygonal, here square (square) cross-section for the torque-transmitting connection of a drilling machine or a hand lever (not shown).
  • the shaft 11 is not chosen to be as long as the Kir ⁇ chner wire, a bone drill with the same, good drilling properties as the Kir ⁇ chner wire is created with the aforementioned design.
  • FIG. 4 A further use of the drilling section can be seen in FIG. 4.
  • a drilling section in this illustration a drilling section in
  • the cartilage or bone cutter 70 in turn comprises a round-rod-shaped shaft 11, at the distal end of which a drill section described with reference to FIGS. 1 and 2 is arranged.
  • a cylindrical milling body 71 is arranged in front of the drilling section.
  • the cylindrical milling body 71 is the one shown
  • a truncated cone shaped milling body 72 downstream This serves to form a correspondingly frustoconical hole in the bone for the use of an appropriately designed bone screw.
  • a shaft section 73 with a circular cross section the length of which corresponds to approximately half the length of section 14.
  • This shaft section 73 serves to guide the milling cutter during drilling and subsequent milling.
  • the proximal end of the shaft 11 also has, as in the previous example of use, a surface or a section 22 with a triangular or polygonal cross section for the torque-transmitting connection of a drilling machine or a hand lever.
  • the length of the section 14 is approximately equal to the length of the cylindrical milling body 71.
  • the frustoconical milling body 72 has a length which is approximately half the length of the cylindrical milling body 71. This Dimensions are matched to preferred dimensions of transpedicular vertebral bone screws. .
  • a shoulder 24 which extends radially inward over the circumference is formed between the cylindrical milling body 71 and the frustoconical milling body 21.
  • a corresponding shoulder 25 is located between the frustoconical milling body 72 and the shaft section 73.
  • the frustoconical milling body 72 tapers in the direction of the drill tip 18.
  • the cutting edges of the cylindrical and frustoconical milling bodies are identified by the reference number 26.

Abstract

Lorsqu'on perce des trous dans des os à l'aide de forets classiques, on atteint des températures allant jusqu'à 120 DEG C, qui risquent d'endommager l'os concerné. Pour remédier à ce problème, il est prévu un foret pourvu d'une pointe de forage (13) formée à l'extrémité distale et montée sur une section (14) aplatie diamétralement par rapport à l'axe médian (15) de la tige.
EP94921616A 1993-10-04 1994-06-20 Foret, broches de kirschner, fraises pour os, etc. pourvus d'un foret de ce type Ceased EP0722293A1 (fr)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
DE4333755 1993-10-04
DE4333755 1993-10-04
DE19949404630 DE9404630U1 (de) 1994-03-18 1994-03-18 Kirschnerdraht
DE9404630U 1994-03-18
PCT/EP1994/002009 WO1995009569A1 (fr) 1993-10-04 1994-06-20 Foret, broches de kirschner, fraises pour os, etc. pourvus d'un foret de ce type

Publications (1)

Publication Number Publication Date
EP0722293A1 true EP0722293A1 (fr) 1996-07-24

Family

ID=25930137

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94921616A Ceased EP0722293A1 (fr) 1993-10-04 1994-06-20 Foret, broches de kirschner, fraises pour os, etc. pourvus d'un foret de ce type

Country Status (6)

Country Link
US (1) US5788699A (fr)
EP (1) EP0722293A1 (fr)
JP (1) JPH09503138A (fr)
FI (1) FI961468A (fr)
NO (1) NO961222D0 (fr)
WO (1) WO1995009569A1 (fr)

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US6200321B1 (en) 1998-09-10 2001-03-13 Hand Innovations, Inc. Fracture fixation system
EP1481648A1 (fr) * 2003-05-26 2004-12-01 Andreas Dr. Roeckl Outil de percage/chanfreinage pour le traitement des sabots
NZ534215A (en) * 2004-07-20 2005-12-23 Enztec Ltd Improved surgical drill
US20060036251A1 (en) * 2004-08-09 2006-02-16 Reiley Mark A Systems and methods for the fixation or fusion of bone
US9662158B2 (en) 2004-08-09 2017-05-30 Si-Bone Inc. Systems and methods for the fixation or fusion of bone at or near a sacroiliac joint
US8444693B2 (en) 2004-08-09 2013-05-21 Si-Bone Inc. Apparatus, systems, and methods for achieving lumbar facet fusion
US8414648B2 (en) 2004-08-09 2013-04-09 Si-Bone Inc. Apparatus, systems, and methods for achieving trans-iliac lumbar fusion
US8470004B2 (en) 2004-08-09 2013-06-25 Si-Bone Inc. Apparatus, systems, and methods for stabilizing a spondylolisthesis
US8425570B2 (en) 2004-08-09 2013-04-23 Si-Bone Inc. Apparatus, systems, and methods for achieving anterior lumbar interbody fusion
US9949843B2 (en) 2004-08-09 2018-04-24 Si-Bone Inc. Apparatus, systems, and methods for the fixation or fusion of bone
US8388667B2 (en) 2004-08-09 2013-03-05 Si-Bone, Inc. Systems and methods for the fixation or fusion of bone using compressive implants
US20070156241A1 (en) 2004-08-09 2007-07-05 Reiley Mark A Systems and methods for the fixation or fusion of bone
US20180228621A1 (en) 2004-08-09 2018-08-16 Mark A. Reiley Apparatus, systems, and methods for the fixation or fusion of bone
CA2812775C (fr) 2009-08-20 2015-09-29 Howmedica Osteonics Corp. Instrumentation souple, necessaire et methode applicables au ligament croise anterieur du genou
US8926665B2 (en) * 2010-03-18 2015-01-06 Facsecure, Llc Cortical, anti-migration, facet dowel for fusion of facet joints in the spine and devices for setting the same in place
US9795398B2 (en) 2011-04-13 2017-10-24 Howmedica Osteonics Corp. Flexible ACL instrumentation, kit and method
US9445803B2 (en) 2011-11-23 2016-09-20 Howmedica Osteonics Corp. Filamentary suture anchor
US8778026B2 (en) 2012-03-09 2014-07-15 Si-Bone Inc. Artificial SI joint
US10363140B2 (en) 2012-03-09 2019-07-30 Si-Bone Inc. Systems, device, and methods for joint fusion
WO2013134775A1 (fr) * 2012-03-09 2013-09-12 Si-Bone Inc. Broche de guidage
US9044321B2 (en) 2012-03-09 2015-06-02 Si-Bone Inc. Integrated implant
US9808242B2 (en) 2012-04-06 2017-11-07 Howmedica Osteonics Corp. Knotless filament anchor for soft tissue repair
ES2714681T3 (es) 2012-05-04 2019-05-29 Si Bone Inc Implante fenestrado
US20140039552A1 (en) 2012-08-03 2014-02-06 Howmedica Osteonics Corp. Soft tissue fixation devices and methods
US9011443B2 (en) * 2012-09-20 2015-04-21 Depuy Mitek, Llc Low profile reamers and methods of use
US9078740B2 (en) 2013-01-21 2015-07-14 Howmedica Osteonics Corp. Instrumentation and method for positioning and securing a graft
US9402620B2 (en) 2013-03-04 2016-08-02 Howmedica Osteonics Corp. Knotless filamentary fixation devices, assemblies and systems and methods of assembly and use
WO2014145902A1 (fr) 2013-03-15 2014-09-18 Si-Bone Inc. Implants de fixation ou de fusion vertébrale
US10292694B2 (en) 2013-04-22 2019-05-21 Pivot Medical, Inc. Method and apparatus for attaching tissue to bone
US9839448B2 (en) 2013-10-15 2017-12-12 Si-Bone Inc. Implant placement
US11147688B2 (en) 2013-10-15 2021-10-19 Si-Bone Inc. Implant placement
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WO2016044739A1 (fr) 2014-09-18 2016-03-24 Si-Bone Inc. Implant matriciel
US9986992B2 (en) 2014-10-28 2018-06-05 Stryker Corporation Suture anchor and associated methods of use
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US11116519B2 (en) 2017-09-26 2021-09-14 Si-Bone Inc. Systems and methods for decorticating the sacroiliac joint
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Also Published As

Publication number Publication date
US5788699A (en) 1998-08-04
FI961468A0 (fi) 1996-04-01
FI961468A (fi) 1996-04-01
JPH09503138A (ja) 1997-03-31
NO961222L (no) 1996-03-26
NO961222D0 (no) 1996-03-26
WO1995009569A1 (fr) 1995-04-13

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