CA2511760A1 - Device for osteosynthesis - Google Patents

Device for osteosynthesis Download PDF

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Publication number
CA2511760A1
CA2511760A1 CA002511760A CA2511760A CA2511760A1 CA 2511760 A1 CA2511760 A1 CA 2511760A1 CA 002511760 A CA002511760 A CA 002511760A CA 2511760 A CA2511760 A CA 2511760A CA 2511760 A1 CA2511760 A1 CA 2511760A1
Authority
CA
Canada
Prior art keywords
insert
opening
osteosynthesis
osteosynthesis element
central passage
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
CA002511760A
Other languages
French (fr)
Other versions
CA2511760C (en
Inventor
Claude Mathieu
Robert Frigg
Rolf Schneider
R. Appenzeller
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
Application filed by Individual filed Critical Individual
Publication of CA2511760A1 publication Critical patent/CA2511760A1/en
Application granted granted Critical
Publication of CA2511760C publication Critical patent/CA2511760C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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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
    • A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
    • A61B17/8047—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers wherein the additional element surrounds the screw head in the plate hole

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  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Prostheses (AREA)
  • Orthopedics, Nursing, And Contraception (AREA)

Abstract

The invention relates to a device for osteosynthesis comprising: A) an osteosynthesis element (1) with an upper face (5) and a lower face (6) and a bore (2), which links the upper and lower faces (5, 6) and receives a multi-axial pivotable insert (10) for a longitudinal bone fixing element (20), said bore (2) having a central axis (3); B) an insert (10), which that can be placed in the bore (2) and comprises a central passage (11) with a longitudinal axis (12) for housing the bone fixing element (20). The insert (10) is configured as a helical spring with an external sheath surface (13) and an internal sheath surface (14) that defines the passage (11).

Claims (35)

1. ~A device for osteosynthesis, comprising:
an osteosynthesis element having an upper face, a lower face and an opening with a central axis that connects the upper and lower faces;
a multi-axially pivotable insert for insertion into the opening, the insert having a central passage with a longitudinal axis configured and adapted to receive a longitudinal bone fixation element wherein the insert is configured as a helical spring having an outer sheath surface and an inner sheath surface that define the central passage.
2. ~The device of claim 1, wherein the helical spring is non-round.
3. ~The device of claim 2 wherein the helical spring is prismatic.
4. ~The device of claim 1, wherein the opening in the osteosynthesis element has a non-round cross-section.
5. ~The device of claim 4, wherein the opening in the osteosynthesis element has a prismatic cross-section.
6. ~The device of claim 4, wherein a cross-section of the outer sheath surface of the helical spring that is orthogonal to the longitudinal axis of the central passage has substantially the same shape as the cross-section of the opening through the osteosynthesis element.
7. ~The device of claim 1, wherein the helical spring is radially compressible and/or expandable.
8. ~The device of claim 1, wherein the insert is fixed to prevent rotation relative to its longitudinal axis and configured and adapted to remain partially axially movable and/or pivotable within the opening relative to the osteosynthesis element.
9. ~The device of claim 1, wherein the cross-section of the opening in the osteosynthesis element is polygonal.
10. ~The device of claim 9, wherein the cross-section of the opening in the osteosynthesis element is hexagonal.
11. ~The device of claim 1, wherein the opening is generally prismatic.
12. ~The device of claim 1, wherein the opening through the osteosynthesis element conically widens in at least one direction along its central axis.
13. ~The device of claim 1, wherein the central passage of the insert conically widens in at least one direction along its longitudinal axis.
14. ~The device of claim 1, wherein the central passage of the insert is generally prismatic.
15. ~The device of claim 1, wherein the central passage of the insert is generally cylindrically-shaped.
16. ~The device of claim 1, wherein at least one surface of the insert is roughened.
17. ~The device of claim 1, wherein at least one surface of the insert is coated with a harder material than the insert.
18. ~The device of claim 1, wherein the opening through the osteosynthesis element is roughened.
19. ~The device of claim 1, wherein the opening through the osteosynthesis element is provided with a coating of a harder material than that of the osteosynthesis element.
20. ~The device of claim 1, wherein the opening through the osteosynthesis element includes peripheral grooves that extend around a circumference of the opening.
21. The device of claim 1, wherein the opening through the osteosynthesis element narrows in cross-section towards its lower face and its upper face in order to prevent the insert from falling out or being pressed out.
22. The device of claim 1, wherein the outer sheath surface of the insert is convex.
23. The device of claim 1, wherein the opening through the osteosynthesis element is concave.
24. The device of claim 1, wherein the osteosynthesis element and the insert are formed of different materials.
25. The device of claim 24, wherein the osteosynthesis element is formed of plastic and the insert is metallic.
26. The device of claim 1, wherein the insert has a height measured along its longitudinal axis that is smaller than a height of the opening through the osteosynthesis element measured in the direction of its central axis.
27. The device of claim 26, wherein the height of the insert ranges from 40%
to 85% and preferably from 45% to 55% of the height of the opening.
28. The device of claim 1, further comprising a bone screw having a threaded portion for engagement of bone, configured and adapted to correspond to the shape of the central passage of the insert.
29. The device of claim 1, wherein the osteosynthesis element is a bone plate.
30. The device of claim 1, wherein the osteosynthesis element is a pedicle screw or a pedicle hook.
31. The device of claim 1, wherein the osteosynthesis element is an external fixator.
32. The device of claim 1, wherein the osteosynthesis element is an intervertebral implant.
33. The device of claim 28, where the bone screw has a threaded head portion, and the pitch of the windings of the helical spring implemented as the insert essentially corresponds to the pitch of the outside thread of the screw head.
34. ~A bone plate comprising:
an upper face, a lower face and an opening with a central axis that connects the upper and lower faces;
a multi-axially pivotable insert for insertion into the opening, the insert having a central passage with a longitudinal axis configured and adapted to receive a longitudinal bone fixation element wherein the insert is configured as a polygonally-shaped, helical spring having an outer sheath surface and an inner sheath surface that define the central passage and wherein the insert is configured and adapted to be secured against rotation relative to its longitudinal axis while remaining pivotally adjustable relative to the bone plate.
35. ~The bone plate of claim 34, wherein the insert is hexagonally shaped.
CA2511760A 2002-12-06 2002-12-06 Device for osteosynthesis Expired - Fee Related CA2511760C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2002/000673 WO2004052219A1 (en) 2002-12-06 2002-12-06 Device for osteosynthesis

Publications (2)

Publication Number Publication Date
CA2511760A1 true CA2511760A1 (en) 2004-06-24
CA2511760C CA2511760C (en) 2011-02-15

Family

ID=32477084

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2511760A Expired - Fee Related CA2511760C (en) 2002-12-06 2002-12-06 Device for osteosynthesis

Country Status (11)

Country Link
US (1) US9271771B2 (en)
EP (1) EP1567075B1 (en)
JP (1) JP4804757B2 (en)
CN (1) CN100400007C (en)
AR (1) AR041950A1 (en)
AU (1) AU2002347177B2 (en)
BR (1) BR0215924B1 (en)
CA (1) CA2511760C (en)
CL (1) CL2003002508A1 (en)
TW (1) TW200418428A (en)
WO (1) WO2004052219A1 (en)

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US11039865B2 (en) 2018-03-02 2021-06-22 Stryker European Operations Limited Bone plates and associated screws

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Also Published As

Publication number Publication date
WO2004052219A1 (en) 2004-06-24
BR0215924A (en) 2005-08-09
AR041950A1 (en) 2005-06-01
CN100400007C (en) 2008-07-09
US9271771B2 (en) 2016-03-01
CN1694652A (en) 2005-11-09
BR0215924B1 (en) 2012-08-21
AU2002347177B2 (en) 2006-08-31
TW200418428A (en) 2004-10-01
TWI325770B (en) 2010-06-11
US20060058797A1 (en) 2006-03-16
EP1567075A1 (en) 2005-08-31
JP4804757B2 (en) 2011-11-02
CA2511760C (en) 2011-02-15
EP1567075B1 (en) 2013-11-27
CL2003002508A1 (en) 2005-02-04
AU2002347177A1 (en) 2004-06-30
JP2006508749A (en) 2006-03-16

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Effective date: 20171206

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