WO2002102259B1 - An assembly for the stabilisation of vertebral bodies of the spine - Google Patents

An assembly for the stabilisation of vertebral bodies of the spine

Info

Publication number
WO2002102259B1
WO2002102259B1 PCT/GB2002/002709 GB0202709W WO02102259B1 WO 2002102259 B1 WO2002102259 B1 WO 2002102259B1 GB 0202709 W GB0202709 W GB 0202709W WO 02102259 B1 WO02102259 B1 WO 02102259B1
Authority
WO
WIPO (PCT)
Prior art keywords
assembly according
spring member
range
straight portions
central portion
Prior art date
Application number
PCT/GB2002/002709
Other languages
French (fr)
Other versions
WO2002102259A3 (en
WO2002102259A2 (en
Inventor
Dilip Kumar Sengupta
Robert Charles Mulholland
Original Assignee
Dilip Kumar Sengupta
Robert Charles Mulholland
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 Dilip Kumar Sengupta, Robert Charles Mulholland filed Critical Dilip Kumar Sengupta
Priority to JP2003504848A priority Critical patent/JP2004528945A/en
Priority to US10/480,986 priority patent/US7632292B2/en
Priority to DE60202289T priority patent/DE60202289T2/en
Priority to EP02735616A priority patent/EP1399078B8/en
Priority to AT02735616T priority patent/ATE284649T1/en
Priority to CA002450933A priority patent/CA2450933A1/en
Priority to AU2002310625A priority patent/AU2002310625B2/en
Publication of WO2002102259A2 publication Critical patent/WO2002102259A2/en
Publication of WO2002102259A3 publication Critical patent/WO2002102259A3/en
Publication of WO2002102259B1 publication Critical patent/WO2002102259B1/en

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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7019—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other
    • A61B17/7026—Longitudinal elements having flexible parts, or parts connected together, such that after implantation the elements can move relative to each other with a part that is flexible due to its form
    • 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
    • A61B17/7002—Longitudinal elements, e.g. rods
    • A61B17/7011—Longitudinal element being non-straight, e.g. curved, angled or branched

Abstract

An assembly for the stabilisation of vertebral bodies (12, 14) of the spine is described. It comprises a pair of pedicle screws (20) each having a threaded shaft (20a) with a tapering first end (20b) for introduction into a vertebral body and a head portion (20c) with a second end (20d), and is characterised in that it further comprises a spring member (18, 22, 24, 40, 42, 44) of the following form. The spring member has first and second ends, substantially straight portions (18b) adjacent each end and a substantially curvilinear central portion (18a) therebetween, the straight portions and the substantially curvilinear central portion being substantially coplanar. The assembly also includes a pair of fixation mechanisms (26) for securing the first and second ends of the spring member to the pair of pedicle screws. Typically the assembly will be for stabilisation of two adjacent vertebral bodies of the spine, that is one motion segment.

Claims

AMENDED CLAIMS[received by the International Bureau on 1 1 April 2003 (1 1.04.03); original claims 1 -27 replaced by new claims 1-25 (4 pages)]
1. An assembly for the stabilisation of vertebral bodies of the spine comprising: a pair of pedicle screws each having a threaded shaft with a tapering first end for introduction into a vertebral body and a head portion with a second end, a spring member having first and second ends, substantially straight portions adjacent each end and a substantially curvilinear central portion therebetween, the straight portions and the substantially curvilinear central portion being substantially coplanar; and a pair of fixation mechanisms for securing the first and second ends of the spring member to the pair of pedicle screws, and characterised in that the substantially curvilinear central portion of the spring member is a coil.
2. An assembly according to any one of the preceding claims characterised in that the substantially curvilinear central portion of the spring member has a radius of curvature in the range 3 to 17 mm.
3. An assembly according to claim 2 characterised in that the substantially curvilinear central portion of the spring member has a radius of curvature in the range 5 to 15 mm.
4. An assembly according to any one of the preceding claims characterised in that the substantially straight portions of the spring member are at angle to each other in the range 0 to 180°. 17
5. An assembly according to claim 4 characterised in the substantially straight portions of the spring member are at an angle to each other in the range 90 to 180 degrees.
6. An assembly according to any one of claims 1 to 3 characterised in that the substantially straight portions of the spring member are coaxial with each other.
7. An assembly according to any one of claims 1 to 3 characterised in that the substantially straight portions of the spring member are parallel to each other.
8. An assembly according to any one of the preceding claims characterised in that the spring member is formed from wire.
9. An assembly according to any one of the preceding claims characterised in that the spring member has a diameter in the range 1 to 6 mm.
10. An assembly according to claim 11 characterised in that the spring member has a diameter in the range 2 to 5 mm.
11. An assembly according to any one of the preceding claims characterised in that at least the parts of the substantially straight portions adjacent the ends of the spring member are of a greater cross-sectional area than that of the substantially central curvilinear portion.
12. An assembly according to any one of claims 1 to 10 characterised in that it further comprises a pair of sleeves, one on each of the substantially 18
straight portions, to effectively increase the external diameter of at least a part of each of the substantially straight portions.
13. An assembly according to claim 12 characterised in that the sleeves have an external diameter in the range 5 mm to 8 mm.
14. An assembly according to any one of the preceding claims characterised in that the spring member is round in cross section.
15. An assembly according to any one of claims 1 to 13 characterised in that the spring member is square or rectangular in cross section.
16. An assembly according to any one of the preceding claims characterised in that the spring member is formed from titanium or stainless steel.
17. An assembly according to any one of the preceding claims characterised in that the threaded shaft portions of the pedicle screws have lengths in the range 30 to 60 mm.
18. An assembly according to claim 17 characterised in that the threaded shaft portions of the pedicle screws have lengths in the range 35 to 55 mm.
19. An assembly according to any one of the preceding claims characterised in that the pedicle screws are formed from titanium.
20. An assembly according to any one of the preceding claims characterised in that the spring member is specifically adapted for stabilisation of two adjacent vertebral bodies of the spine, that is one motion segment. 19
21. An assembly according to claim 20 characterised in that the spring member has a length in the range 20 to 65 mm.
22. An assembly according to claim 21 characterised in that the spring member has a length in the range 25 to 60 mm.
23. An assembly according to any one of claims 1 to 19 characterised in that the spring member is specifically adapted for stabilisation of three vertebral bodies of the spine, that is two motion segments.
24. An assembly according to claim 23 characterised in that the spring member has a length in the range 50-110 mm.
25. An assembly according to claim 24 characterised in that the spring member has a length in the range 60-100 mm.
PCT/GB2002/002709 2001-06-16 2002-06-17 An assembly for the stabilisation of vertebral bodies of the spine WO2002102259A2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP2003504848A JP2004528945A (en) 2001-06-16 2002-06-17 Assembly for stabilizing the vertebral body of the spine
US10/480,986 US7632292B2 (en) 2001-06-16 2002-06-17 Assembly for the stabilisation of vertebral bodies of the spine
DE60202289T DE60202289T2 (en) 2001-06-16 2002-06-17 ARRANGEMENT FOR SPINE STABILIZATION
EP02735616A EP1399078B8 (en) 2001-06-16 2002-06-17 An assembly for the stabilisation of vertebral bodies of the spine
AT02735616T ATE284649T1 (en) 2001-06-16 2002-06-17 ARRANGEMENT FOR VERTEBRATE STABILIZATION
CA002450933A CA2450933A1 (en) 2001-06-16 2002-06-17 An assembly for the stabilisation of vertebral bodies of the spine
AU2002310625A AU2002310625B2 (en) 2001-06-16 2002-06-17 An assembly for the stabilisation of vertebral bodies of the spine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0114783.4A GB0114783D0 (en) 2001-06-16 2001-06-16 A assembly for the stabilisation of vertebral bodies of the spine
GB0114783.4 2001-06-16

Publications (3)

Publication Number Publication Date
WO2002102259A2 WO2002102259A2 (en) 2002-12-27
WO2002102259A3 WO2002102259A3 (en) 2003-05-01
WO2002102259B1 true WO2002102259B1 (en) 2003-06-12

Family

ID=9916787

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2002/002709 WO2002102259A2 (en) 2001-06-16 2002-06-17 An assembly for the stabilisation of vertebral bodies of the spine

Country Status (10)

Country Link
US (1) US7632292B2 (en)
EP (1) EP1399078B8 (en)
JP (1) JP2004528945A (en)
AT (1) ATE284649T1 (en)
AU (1) AU2002310625B2 (en)
CA (1) CA2450933A1 (en)
DE (1) DE60202289T2 (en)
ES (1) ES2235045T3 (en)
GB (1) GB0114783D0 (en)
WO (1) WO2002102259A2 (en)

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US8911478B2 (en) 2012-11-21 2014-12-16 Roger P. Jackson Splay control closure for open bone anchor
US8911477B2 (en) 2007-10-23 2014-12-16 Roger P. Jackson Dynamic stabilization member with end plate support and cable core extension
US8926670B2 (en) 2003-06-18 2015-01-06 Roger P. Jackson Polyaxial bone screw assembly
US8926672B2 (en) 2004-11-10 2015-01-06 Roger P. Jackson Splay control closure for open bone anchor
US8932334B2 (en) 2002-04-05 2015-01-13 Stephen Ritland Dynamic fixation device and method of use
US8974499B2 (en) 2005-02-22 2015-03-10 Stryker Spine Apparatus and method for dynamic vertebral stabilization
US8979904B2 (en) 2007-05-01 2015-03-17 Roger P Jackson Connecting member with tensioned cord, low profile rigid sleeve and spacer with torsion control
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US9101404B2 (en) 2007-01-26 2015-08-11 Roger P. Jackson Dynamic stabilization connecting member with molded connection
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DE60202289D1 (en) 2005-01-20
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WO2002102259A2 (en) 2002-12-27
US20060240533A1 (en) 2006-10-26
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CA2450933A1 (en) 2002-12-27
ATE284649T1 (en) 2005-01-15
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US7632292B2 (en) 2009-12-15
EP1399078B1 (en) 2004-12-15

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