CA2560542A1 - Pedicle screw - Google Patents

Pedicle screw Download PDF

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Publication number
CA2560542A1
CA2560542A1 CA002560542A CA2560542A CA2560542A1 CA 2560542 A1 CA2560542 A1 CA 2560542A1 CA 002560542 A CA002560542 A CA 002560542A CA 2560542 A CA2560542 A CA 2560542A CA 2560542 A1 CA2560542 A1 CA 2560542A1
Authority
CA
Canada
Prior art keywords
pedicle screw
screw according
clamp
piece
head piece
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
CA002560542A
Other languages
French (fr)
Other versions
CA2560542C (en
Inventor
John Sutcliffe
Thomas Mack
Marcus Richter
Nicholas Willmann
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.)
Ulrich GmbH and Co KG
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 CA2560542A1 publication Critical patent/CA2560542A1/en
Application granted granted Critical
Publication of CA2560542C publication Critical patent/CA2560542C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A61B17/7032—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
    • A61B17/7001—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
    • 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
    • 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
    • A61B17/68—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
    • A61B17/7097—Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants
    • A61B17/7098—Stabilisers comprising fluid filler in an implant, e.g. balloon; devices for inserting or filling such implants wherein the implant is permeable or has openings, e.g. fenestrated screw
    • 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
    • A61B17/863—Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper

Abstract

The invention relates to a pedicle screw for implants for the correction and stabilisation of the spinal column, comprising a head piece (4), on one axial end of a threaded shaft (2) to which a clamp piece (3) may be connected, comprising a clamp housing (5) for a bar (6) which may be fixed to the head piece (4). A threaded drilling (8) is embodied in the clamp piece (3) for housing a thread provided on the head piece (4).

Claims (17)

1. Pedicle screw for implants for the correction and stabilization of the spinal column, with a head piece (4) on the one axial end of a threaded shaft (2), to which a clamp piece (3) can be connected which has a clamp receptacle (5) for a rod (6) that can be fixed to the head piece (4) characterized in that a threaded bore (8) is integrated into the clamp piece (3) to accommodate a thread provided on the head piece (4).
2. Pedicle screw according to Claim 1, characterized in that the head piece (4) is shaped as a spherical head and the thread is located on the outside of a threaded retainer (26) whose interior forms a ball socket for the spherical head.
3. Pedicle screw according to Claims 1 and 2, characterized in that, coaxially to the axis (17) of the threaded shaft (2), a non-spherical, preferably polygonal tool receptacle (18) is provided in the free end of the head piece (4) for a tool to apply torque.
4. Pedicle screw according to Claims 1 to 3, characterized in that in the threaded shaft (2) is a coaxial guide receptacle (19) from which at least one side channel (20) leads to the circumference area of the threaded shaft (2).
5. Pedicle screw according to Claim 4, characterized in that the side channel (20) is spread several times evenly across the circumference of the threaded shaft (2).
6. Pedicle screw according to Claims 4 and 5, characterized in that the side channel (20) is axially staggered several times.
7. Pedicle screw according to Claims 4 to 6, characterized in that the side channel (20) ends between the thread flights (21) in the circumference area of the threaded shaft (2).
8. Pedicle screw according to Claims 4 to 7, characterized in that the guide receptacle (19) extends along the entire axial length of the threaded shaft (2).
9. Pedicle screw according to Claims 1 to 8, characterized in that threaded bore (8) is located in the clamp base (7) of the clamp piece (3) and in that the clamp receptacle (5) allows a ring (22) to be placed on the head piece (4).
10. Pedicle screw according to Claims 1 to 9, characterized in that a lid (11) is connected to the first leg (9) of the clamp piece (3) by means of a joint (10).
11. Pedicle screw according to Claim 10, characterized in that a leg wing (13) projects radially outward from the second leg (12) of the clamp piece (3) towards the side not facing the first leg (9), in which a threaded wing bore (14) is provided to accommodate a securing screw (16) that passes through an opening (15) in the lid (11).
12. Pedicle screw according to Claims 10 and 11, characterized in that a stamphead (28) is arranged between the lid (11) and the head piece (4) to clamp the head piece (4) in the clamp piece when the lid (11) is finally closed.
13. Pedicle screw according to Claim 12, characterized in that a screw receptacle (23) is provided in the lid (11) to accommodate a fixing screw (27) which serves to clamp the rod (6).
14. Pedicle screw according to Claims 12 and 13, characterized in that the stamphead (28) is formed by a ring leg (24) formed at the ring (22).
15. Pedicle screw according to Claim 14, characterized in that the ring leg (24) is provided in duplicate on opposite sides of the ring (22) in order to encircle the rod (6) from both sides.
16. Pedicle screw according to Claims 12 to 15, characterized in that a pressure strip (25) is provided at the lid (11) on the side facing the head piece (4) in order to apply force to the stamphead (28).
17. Pedicle screw according to Claims 12 to 16, characterized in that the supporting surface for the stamphead (28), which is located at the lid (11), is arranged at a distance from the joint (10).
CA2560542A 2004-03-10 2004-12-01 Pedicle screw Expired - Fee Related CA2560542C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102004011612.1 2004-03-10
DE102004011612A DE102004011612A1 (en) 2004-03-10 2004-03-10 pedicle screw
PCT/DE2004/002644 WO2005087120A1 (en) 2004-03-10 2004-12-01 Pedicle screw

Publications (2)

Publication Number Publication Date
CA2560542A1 true CA2560542A1 (en) 2005-09-22
CA2560542C CA2560542C (en) 2010-09-14

Family

ID=34895125

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2560542A Expired - Fee Related CA2560542C (en) 2004-03-10 2004-12-01 Pedicle screw

Country Status (10)

Country Link
EP (1) EP1722702B1 (en)
CN (1) CN100479774C (en)
AT (1) ATE444716T1 (en)
BR (1) BRPI0418472A (en)
CA (1) CA2560542C (en)
DE (2) DE102004011612A1 (en)
ES (1) ES2332459T3 (en)
HK (1) HK1100522A1 (en)
MX (1) MXPA06010331A (en)
WO (1) WO2005087120A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8690930B2 (en) 2008-07-01 2014-04-08 Biedermann Technologies Gmbh & Co. Kg Bone anchor with plug member and tool for inserting the plug member into the bone anchor

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2008270563B2 (en) 2007-06-28 2012-04-19 Spinal Elements, Inc. Spinal stabilization device
ES2359756T3 (en) * 2008-01-28 2011-05-26 Spinelab Ag PEDICULAR SCREW WITH CLOSURE DEVICE.
JP5804325B2 (en) 2008-10-30 2015-11-04 デピュイ・シンセス・プロダクツ・インコーポレイテッド System and method for delivering bone cement to a bone anchor
EP2279705A1 (en) * 2009-07-28 2011-02-02 Spinelab AG Spinal implant
US9155580B2 (en) 2011-08-25 2015-10-13 Medos International Sarl Multi-threaded cannulated bone anchors
US10813678B2 (en) 2016-02-29 2020-10-27 Stryker European Holdings I, Llc Rod cutting debris collector and guide

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1988006023A1 (en) * 1987-02-20 1988-08-25 Klaus Draenert Suction drainage-bone screw
DE19949285C2 (en) * 1999-10-12 2002-08-14 Impag Gmbh Medizintechnik bone screw
US20030004511A1 (en) * 2001-06-27 2003-01-02 Ferree Bret A. Polyaxial pedicle screw system
DE10164323C1 (en) * 2001-12-28 2003-06-18 Biedermann Motech Gmbh Bone screw has holder element joined to shaft and possessing two free arms , with inner screw, slot, external nut, cavity and shoulder cooperating with attachment
FR2847152B1 (en) * 2002-11-19 2005-02-18 Eurosurgical VERTEBRAL ANCHORING DEVICE AND ITS LOCKING DEVICE ON A POLY AXIAL SCREW
US7377923B2 (en) * 2003-05-22 2008-05-27 Alphatec Spine, Inc. Variable angle spinal screw assembly

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8690930B2 (en) 2008-07-01 2014-04-08 Biedermann Technologies Gmbh & Co. Kg Bone anchor with plug member and tool for inserting the plug member into the bone anchor
US9265539B2 (en) 2008-07-01 2016-02-23 Biedermann Technologies Gmbh & Co. Kg Bone anchor with plug member and tool for inserting the plug member into the bone anchor
US9730745B2 (en) 2008-07-01 2017-08-15 Biedermann Technologies Gmbh & Co. Kg Bone anchor with plug member and tool for inserting the plug member into the bone anchor

Also Published As

Publication number Publication date
WO2005087120A1 (en) 2005-09-22
ATE444716T1 (en) 2009-10-15
CN100479774C (en) 2009-04-22
DE102004011612A1 (en) 2005-09-29
BRPI0418472A (en) 2007-06-19
CN1946349A (en) 2007-04-11
HK1100522A1 (en) 2007-09-21
EP1722702A1 (en) 2006-11-22
MXPA06010331A (en) 2007-03-07
EP1722702B1 (en) 2009-10-07
DE502004010218D1 (en) 2009-11-19
ES2332459T3 (en) 2010-02-05
CA2560542C (en) 2010-09-14

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