CA2515899A1 - Screw comprising an integrated screwdriver - Google Patents

Screw comprising an integrated screwdriver Download PDF

Info

Publication number
CA2515899A1
CA2515899A1 CA002515899A CA2515899A CA2515899A1 CA 2515899 A1 CA2515899 A1 CA 2515899A1 CA 002515899 A CA002515899 A CA 002515899A CA 2515899 A CA2515899 A CA 2515899A CA 2515899 A1 CA2515899 A1 CA 2515899A1
Authority
CA
Canada
Prior art keywords
screw
screwdriver
integrated
thread
integrated screwdriver
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.)
Granted
Application number
CA002515899A
Other languages
French (fr)
Other versions
CA2515899C (en
Inventor
Romano Matthys-Mark
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.)
Synthes USA LLC
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=32855122&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2515899(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2515899A1 publication Critical patent/CA2515899A1/en
Application granted granted Critical
Publication of CA2515899C publication Critical patent/CA2515899C/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
    • A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
    • 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
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B15/00—Screwdrivers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B31/021—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load by means of a frangible part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/06—Specially-shaped heads
    • 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
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/8625—Shanks, i.e. parts contacting bone tissue
    • 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
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8875—Screwdrivers, spanners or wrenches
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B90/00—Instruments, implements or accessories specially adapted for surgery or diagnosis and not covered by any of the groups A61B1/00 - A61B50/00, e.g. for luxation treatment or for protecting wound edges
    • A61B90/03—Automatic limiting or abutting means, e.g. for safety
    • A61B2090/037—Automatic limiting or abutting means, e.g. for safety with a frangible part, e.g. by reduced diameter
    • 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
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S606/00—Surgery
    • Y10S606/916—Tool for installing or removing orthopedic fastener

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Biomedical Technology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Neurology (AREA)
  • Surgical Instruments (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)

Abstract

The inventive device consists of a screw (1) comprising an integrated screwdriver (2). The screw (1) has a screw shank (3) with a thread (4), a screw head (5) with a thread (8), and has a longitudinal axis (6). The screwdriver (2) is, via a predetermined breaking point (7), joined to the screw head (5) in a manner that is coaxial to the longitudinal axis (6). When tightening the screw, the integrated screwdriver is sheared off at the predetermined breaking point, whereby the shearing off torque is defined by the selected dimensions of the predetermined breaking point. The inventive screw comprising an integrated screwdriver permits even very small-dimensioned screws to be easily held and to be screwed into the plate boring (13) of a bone plate (12) while being guided well therein at a constant angle. The coaxial disposition of the integrated screwdriver and its fixed connection to the screw head enables the screw (1) to be received in any position around the longitudinal axis, and the position of the screwdriver does not need to be considered.

Claims (12)

1. Screw (1) with an integrated screwdriver (2), A) the screw (1) having a screw shaft (3) with a thread (4), a screw head (5) and a longitudinal axis (6) and B) the screwdriver (2) being connected coaxially with the longitudinal axis (6) over a specified breaking point (7) with the screw head (5), characterized in that C) the screw head (5) has an external thread (8).
2. The screw (1) with an integrated screwdriver (2) of claim 1, characterized in that the screw head (5) expands conically in the direction of the screwdriver (2).
3. The screw (1) with an integrated screwdriver (2) of claims 1 or 2, characterized in that the thread (4) of the screw shaft (3) is self cutting.
4. The screw (1) with an integrated screwdriver (2) of one of the claims 1 to 3, characterized in that a groove (10) is provided at its free end (11).
5. The screw (1) with an integrated screwdriver (2) of one of the claims 1 to 4, characterized in that the screw (1) is a bone screw.
6. The screw (1) with an integrated screwdriver (2) of one of the claims 1 to 5, characterized in that the screw (1) has a diameter of less than 2.0 mm and preferably of less than 1.0 mm.
7. The screw (1) with an integrated screwdriver (2) of one of the claims 1 to 6, characterized in that a thread undercut (9) is disposed between the screw shaft (3) and the screw head (5).
8. The screw (1) with an integrated screwdriver (2) of claim 7, characterized in that the predetermined breaking point (7) has a diameter, which is less than the diameter of the thread undercut.
9. The screw (1) with an integrated screwdriver (2) of one of the claims 1 to 8, characterized in that the predetermined breaking point (7) has a diameter of 60 to 82% and preferably of 66 to 75% of the external diameter of the thread (4) of the screw shaft (3).
10. The screw (1) with an integrated screwdriver (2) of one of the claims 1 to 9, characterized in that the predetermined breaking point (7) has a diameter of 0.25 to 0.5 mm and preferably of 0.32 to 0.38 mm.
11. The screw (1) with an integrated screwdriver (2) of one of the claims 1 to 10, characterized in that the external thread (8) of the screw shaft (5) has multiple threads and preferably two threads.
12. Bone plate (12) with at least one screw (1) of one of the claims 1 to 11, characterized in that the bone plate has at least one plate borehole (13), which is provided with an internal thread (14) corresponding to the thread (4) of the screw shaft (3).
CA2515899A 2003-02-12 2003-02-12 Screw comprising an integrated screwdriver Expired - Fee Related CA2515899C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2003/000101 WO2004072496A1 (en) 2003-02-12 2003-02-12 Screw comprising an integrated screwdriver

Publications (2)

Publication Number Publication Date
CA2515899A1 true CA2515899A1 (en) 2004-08-26
CA2515899C CA2515899C (en) 2011-08-23

Family

ID=32855122

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2515899A Expired - Fee Related CA2515899C (en) 2003-02-12 2003-02-12 Screw comprising an integrated screwdriver

Country Status (10)

Country Link
US (1) US7316532B2 (en)
EP (1) EP1592893B1 (en)
JP (1) JP2006514233A (en)
AR (1) AR043001A1 (en)
AT (1) ATE352727T1 (en)
AU (1) AU2003202403B2 (en)
CA (1) CA2515899C (en)
DE (1) DE50306417D1 (en)
ES (1) ES2281620T3 (en)
WO (1) WO2004072496A1 (en)

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Also Published As

Publication number Publication date
ES2281620T3 (en) 2007-10-01
US20060039772A1 (en) 2006-02-23
AR043001A1 (en) 2005-07-13
ATE352727T1 (en) 2007-02-15
WO2004072496A1 (en) 2004-08-26
US7316532B2 (en) 2008-01-08
EP1592893A1 (en) 2005-11-09
AU2003202403A1 (en) 2004-09-06
AU2003202403B2 (en) 2006-09-28
EP1592893B1 (en) 2007-01-24
CA2515899C (en) 2011-08-23
DE50306417D1 (en) 2007-03-15
JP2006514233A (en) 2006-04-27

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