CA2359373A1 - Pedicle screw assembly - Google Patents

Pedicle screw assembly Download PDF

Info

Publication number
CA2359373A1
CA2359373A1 CA002359373A CA2359373A CA2359373A1 CA 2359373 A1 CA2359373 A1 CA 2359373A1 CA 002359373 A CA002359373 A CA 002359373A CA 2359373 A CA2359373 A CA 2359373A CA 2359373 A1 CA2359373 A1 CA 2359373A1
Authority
CA
Canada
Prior art keywords
radial surface
fastener
radius
rod
center
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
CA002359373A
Other languages
French (fr)
Other versions
CA2359373C (en
Inventor
Greg Martin
Yves Crozet
William J. Kelly
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.)
Stryker European Holdings I LLC
Original Assignee
Stryker Spine SAS
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 Stryker Spine SAS filed Critical Stryker Spine SAS
Publication of CA2359373A1 publication Critical patent/CA2359373A1/en
Application granted granted Critical
Publication of CA2359373C publication Critical patent/CA2359373C/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7035—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other
    • A61B17/7037—Screws or hooks, wherein a rod-clamping part and a bone-anchoring part can pivot relative to each other wherein pivoting is blocked when the rod is clamped
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06Q—INFORMATION AND COMMUNICATION TECHNOLOGY [ICT] SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES; SYSTEMS OR METHODS SPECIALLY ADAPTED FOR ADMINISTRATIVE, COMMERCIAL, FINANCIAL, MANAGERIAL OR SUPERVISORY PURPOSES, NOT OTHERWISE PROVIDED FOR
    • G06Q10/00—Administration; Management
    • G06Q10/10—Office automation; Time management
    • G06Q10/107—Computer-aided management of electronic mailing [e-mailing]
    • 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
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7001—Screws or hooks combined with longitudinal elements which do not contact vertebrae
    • A61B17/7032—Screws or hooks with U-shaped head or back through which longitudinal rods pass
    • 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
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7074—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling
    • A61B17/7076—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation
    • A61B17/7082—Tools specially adapted for spinal fixation operations other than for bone removal or filler handling for driving, positioning or assembling spinal clamps or bone anchors specially adapted for spinal fixation for driving, i.e. rotating, screws or screw parts specially adapted for spinal fixation, e.g. for driving polyaxial or tulip-headed screws
    • 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
    • A61B2017/564—Methods for bone or joint treatment

Abstract

A stabilizing assembly includes a fastener. The head of the fastener includes a center, a first radial surface and a second radial surface. The first radial surface defines a first radius from the center. The second radial surface defines a second radius from the center. The first radius is greater than the second radius. The assembly includes a coupling element having a rod receiving opening for receiving a stabilizing rod, a bore for receiving the fastener, and a conical-shaped seat for engaging the first radial surface when the fastener is positioned in the bore. A locking element applies a force upon the stabilizing rod. The rod in turn, engages the second radial surface for forcing the underside of the head against the conical-shaped seat so as to prevent further pivotal and rotational movement of the fastener and the coupling element relative to one another.
CA002359373A 2001-01-05 2001-10-19 Pedicle screw assembly Expired - Lifetime CA2359373C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/755,846 US6488681B2 (en) 2001-01-05 2001-01-05 Pedicle screw assembly
US09/755,846 2001-01-05

Publications (2)

Publication Number Publication Date
CA2359373A1 true CA2359373A1 (en) 2002-07-05
CA2359373C CA2359373C (en) 2005-05-17

Family

ID=25040890

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002359373A Expired - Lifetime CA2359373C (en) 2001-01-05 2001-10-19 Pedicle screw assembly

Country Status (8)

Country Link
US (5) US6488681B2 (en)
EP (3) EP1222899B1 (en)
JP (2) JP2002233532A (en)
KR (1) KR100551677B1 (en)
AT (3) ATE390090T1 (en)
AU (1) AU759914B2 (en)
CA (1) CA2359373C (en)
DE (2) DE60140706D1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD956233S1 (en) * 2020-04-24 2022-06-28 Solco Biomedical Co., Ltd. Cervical screw

Families Citing this family (305)

* Cited by examiner, † Cited by third party
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