CA2171068A1 - Anchoring Member - Google Patents

Anchoring Member

Info

Publication number
CA2171068A1
CA2171068A1 CA2171068A CA2171068A CA2171068A1 CA 2171068 A1 CA2171068 A1 CA 2171068A1 CA 2171068 A CA2171068 A CA 2171068A CA 2171068 A CA2171068 A CA 2171068A CA 2171068 A1 CA2171068 A1 CA 2171068A1
Authority
CA
Canada
Prior art keywords
screw
bore
head
bone
symmetry
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
CA2171068A
Other languages
French (fr)
Other versions
CA2171068C (en
Inventor
Jurgen Harms
Lutz Biedermann
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.)
Individual
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=7756714&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2171068(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 CA2171068A1 publication Critical patent/CA2171068A1/en
Application granted granted Critical
Publication of CA2171068C publication Critical patent/CA2171068C/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
    • 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
    • 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
    • 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

Abstract

An anchoring member for anchoring in a bone is provided with a bone screw having a screw member (1) comprising a threaded por-tion (2) and a head (3) with a spherical segment shaped portion, and a seat part (5) for receiving the head (3) of the screw mem-ber and a rod (15) for connection with the bone screws, whereby the seat part (5) has a first end (6) and an opposite second end (7), an axis of symmetry (8) passing through the first and se-cond end, a bore (9) for passing the threaded portion (2) there-through, the bore being coaxial with the axis of symmetry, and a first region adjacent to said first end (6) having a substanti-ally U-shaped cross-section with two free legs (11, 12) compri-sing an internal screw thread (13) for receiving the rod (15) therein, whereby the bore (9) conically tapers towards the se-cond end (7) in a second portion (16) adjacent to the second end (7) with a cone angle and whereby a pressure member (20) embra-cing the screw head (3) from its side opposite to the threaded portion (2) is provided, the pressure member having an outer surface which conically tapers towards the second end (7) in a region (24) laterally surrounding the screw head (3), the cone angle corresponding to that of the portion (16) of the bore (9).
CA002171068A 1995-03-15 1996-03-05 Anchoring member Expired - Lifetime CA2171068C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19509332A DE19509332C1 (en) 1995-03-15 1995-03-15 Anchoring element
DE19509332.1 1995-03-15

Publications (2)

Publication Number Publication Date
CA2171068A1 true CA2171068A1 (en) 1996-09-16
CA2171068C CA2171068C (en) 1999-02-09

Family

ID=7756714

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002171068A Expired - Lifetime CA2171068C (en) 1995-03-15 1996-03-05 Anchoring member

Country Status (8)

Country Link
US (1) US5672176A (en)
EP (1) EP0732081B1 (en)
JP (1) JP3792287B2 (en)
KR (1) KR100399660B1 (en)
AT (1) ATE192308T1 (en)
CA (1) CA2171068C (en)
DE (2) DE19509332C1 (en)
TW (1) TW312737B (en)

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DE59605091D1 (en) 2000-06-08

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