CA2415072A1 - Polyaxial connection device and method - Google Patents

Polyaxial connection device and method Download PDF

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Publication number
CA2415072A1
CA2415072A1 CA002415072A CA2415072A CA2415072A1 CA 2415072 A1 CA2415072 A1 CA 2415072A1 CA 002415072 A CA002415072 A CA 002415072A CA 2415072 A CA2415072 A CA 2415072A CA 2415072 A1 CA2415072 A1 CA 2415072A1
Authority
CA
Canada
Prior art keywords
connector device
anchoring shaft
hollow core
central aperture
entry channel
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
CA002415072A
Other languages
French (fr)
Other versions
CA2415072C (en
Inventor
Stephen Ritland
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
Application filed by Individual filed Critical Individual
Publication of CA2415072A1 publication Critical patent/CA2415072A1/en
Application granted granted Critical
Publication of CA2415072C publication Critical patent/CA2415072C/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
    • A61B17/70—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
    • A61B17/70—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
    • A61B17/7041—Screws or hooks combined with longitudinal elements which do not contact vertebrae with single longitudinal rod offset laterally from single row of screws or hooks
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00238—Type of minimally invasive operation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/00234—Surgical instruments, devices or methods, e.g. tourniquets for minimally invasive surgery
    • A61B2017/00238—Type of minimally invasive operation
    • A61B2017/00261—Discectomy

Abstract

A surgical implant assembly (70) and components thereof, are disclosed. Such assemblies include a connector device (10) and an anchoring shaft (30). The assemblies are useful for insertion into bone and connecting a foreign object to bone via a polyaxial coupling mechanism.

Claims (21)

1. A connector device adapted fox use with an anchoring shaft, comprising:

a shank having first and second ends, said first end having a securing mechanism, and said second end comprising a hollow core, and a central aperture operatively associated with said hollow core, said hollow core sized for receiving an anchoring shaft head.
2. A connector device as in claim 1, wherein said second end further comprises an entry channel.
3. A connector device as in claim 2, wherein said entry channel is operatively associated with said central aperture.
4. A connector as in claim 1, wherein said second end further comprises at least one expansion slot operatively associated with said central aperture.
5. A connector device as in claim 1, wherein said securing mechanism is selected from the group consisting of screw threads, hooks, plates, and flanges.
6. A connector device as in claim 1, wherein said hollow core has an interior surface, said interior surface having a texture.
7. A connector device as in claim 1, wherein at least a portion of the second end of said connector device has a shape selected from the group consisting of:
spherical, semi-spherical, aspherical, polyhedral, conical, and a truncated cone shape.
8. A surgical implant assembly, comprising:

a connector device having first and second ends, said second end having a hollow core and a central aperture;
an anchor shaft having a proximal end and a distal end, said proximal end having an anchoring shaft head and said distal end being threaded, said anchoring shaft head insertable into said hollow core through an entry channel provided in said connected device and retained within said central aperture;
a connecting link having a connecting end with an anchoring shaft cavity said connecting link secured to said connector device by an anchoring shaft nut on said distal end of said anchoring shaft.
9. The surgical implant assembly of claim 8, further comprising:

an implant component having first and second ends, and secured to said assembly by said anchoring shaft and said anchoring shaft nut.
10. The surgical implant assembly of claim 8, wherein said implant component has a retaining process at said second end, whereby longitudinal movement of said implant component arrests when said retaining process contacts said connector.
11. The surgical implant assembly of claim 8, wherein said second end of said connector device further comprises an entry channel.
12. The surgical implant assembly of claim 8, wherein said entry channel is operatively associated with said central aperture of said second end of said connector device.
13. The surgical implant assembly of claim 8, wherein said second end of said connector device further comprises at least one expansion slot operatively associated with said central aperture.
14. A method of installing a surgical implant assembly, comprising the steps of:

(a) securing a connector device to human bone, said connector device having a shank with first and second ends, said second end able to receive an anchoring shaft and having a hollow core and a central aperture;
(b) attaching an anchor shaft, having an anchoring shaft head, to said connector device by inserting said anchoring shaft head into said hollow core such that said anchoring shaft extends through said central aperture;
(c) seating a connecting link onto said second end of said connector device such that said connector device such that said anchoring shaft extends through said anchoring shaft cavity;
(d) inserting a implant component through an aperture in said connecting link;
and (e) securing said connecting link to said connector device by threading and tightening a link nut onto said distal end of said anchoring shaft.
15. The method of claim 14, further comprising the step of adjusting an angular relationship between said connector device and said connecting link.
16. The method of claim 14, wherein said adjusting step occurs between steps (d) and (e).
17. The method of claim 14, wherein said second end of said connecting device further comprises an entry channel operatively associated with said hollow core;
said attaching step comprising inserting said distal end of said anchoring shaft through, respectively, said entry channel, said hollow core, and pulling said anchoring shaft through said central aperture until said anchoring shaft head is positioned in said hollow core.
18. The method of claim 14, wherein said second end of said connecting device further comprises an entry channel having an entrance operatively associated with said hollow core and a slot through said second end to said hollow core between said entry channel and said central aperture;
said attaching step comprising placing said anchoring shaft head at said entrance of said entry channel, inserting said anchoring shaft into said slot such that said anchoring shaft is located within said central aperture, and pulling said anchoring shaft head is positioned in said hollow core.
19. The method of claim 14, further comprising the step of securing said implant component.
20. The method of claim 14, wherein said step of securing said implant component occurs before step (e).
21. The method of claim 14, wherein said step of securing said implant component occurs after step (e).
CA2415072A 2000-06-30 2001-07-02 Polyaxial connection device and method Expired - Fee Related CA2415072C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US21560200P 2000-06-30 2000-06-30
US60/215,602 2000-06-30
PCT/US2001/021205 WO2002002022A1 (en) 2000-06-30 2001-07-02 Polyaxial connection device and method

Publications (2)

Publication Number Publication Date
CA2415072A1 true CA2415072A1 (en) 2002-01-10
CA2415072C CA2415072C (en) 2011-05-31

Family

ID=22803638

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2415072A Expired - Fee Related CA2415072C (en) 2000-06-30 2001-07-02 Polyaxial connection device and method

Country Status (6)

Country Link
US (2) US6736816B2 (en)
EP (1) EP1294295A4 (en)
JP (2) JP2004516040A (en)
AU (2) AU8047601A (en)
CA (1) CA2415072C (en)
WO (1) WO2002002022A1 (en)

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EP1294295A4 (en) 2009-12-23
AU2001280476B2 (en) 2005-11-24
US20040172023A1 (en) 2004-09-02
WO2002002022A1 (en) 2002-01-10
JP2013027713A (en) 2013-02-07
AU8047601A (en) 2002-01-14
EP1294295A1 (en) 2003-03-26
CA2415072C (en) 2011-05-31
US7753939B2 (en) 2010-07-13
US6736816B2 (en) 2004-05-18
US20020035367A1 (en) 2002-03-21
JP2004516040A (en) 2004-06-03

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