WO2021144782A3 - Spinal bone fastener assembly - Google Patents

Spinal bone fastener assembly Download PDF

Info

Publication number
WO2021144782A3
WO2021144782A3 PCT/IB2021/054239 IB2021054239W WO2021144782A3 WO 2021144782 A3 WO2021144782 A3 WO 2021144782A3 IB 2021054239 W IB2021054239 W IB 2021054239W WO 2021144782 A3 WO2021144782 A3 WO 2021144782A3
Authority
WO
WIPO (PCT)
Prior art keywords
rod
rod receiving
bone fastener
set screw
head
Prior art date
Application number
PCT/IB2021/054239
Other languages
French (fr)
Other versions
WO2021144782A2 (en
Inventor
Heiko Koller
Dezsö János JESZENSZKY
Daniel HASCHTMANN
Tamás Fülöp Fekete
Adriano Viganò
Tom Overes
Original Assignee
Inno4Spine Ag
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 Inno4Spine Ag filed Critical Inno4Spine Ag
Publication of WO2021144782A2 publication Critical patent/WO2021144782A2/en
Publication of WO2021144782A3 publication Critical patent/WO2021144782A3/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
    • A61B17/7035—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
    • A61B17/7032—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
    • A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
    • A61F2/00—Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
    • A61F2/02—Prostheses implantable into the body
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30561—Special structural features of bone or joint prostheses not otherwise provided for breakable or frangible

Abstract

A spinal bone fastener assembly (1) is provided comprising a bone fastener (10) comprising a bone fastener head and an elongated shaft; a rod receiving head (20) having a top end and a bottom end, and defining a central axis extending between the top and bottom ends, the rod receiving head (20) further comprising a first rod receiving elongated slot and a central pocket; a rod receiving insert (40) to engage and translate within the central pocket substantially parallel to the central axis, and comprising a second rod receiving elongated slot, and further comprising a bottom seat; and a set screw (60) for tightening a rod into the rod receiving insert (40), which comprises a thread (50) configured to engage with the set screw (60) to allow the bottom seat to approach the spinal rod in response to a tightening rotation of the set screw (60) while being threadedly engaged with the thread, and while in contact with the rod. The assembly (1) comprises a latching mechanism (42) defining an unlatched state, and a latched state, in which the rod is configured to be pressed against the latching mechanism (42) to thereby inhibit a translational movement of the rod receiving insert (40) in relation to the rod receiving head (20).
PCT/IB2021/054239 2020-06-16 2021-05-18 Spinal bone fastener assembly WO2021144782A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH00717/20 2020-06-16
CH7172020 2020-06-16

Publications (2)

Publication Number Publication Date
WO2021144782A2 WO2021144782A2 (en) 2021-07-22
WO2021144782A3 true WO2021144782A3 (en) 2021-09-02

Family

ID=76159696

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2021/054239 WO2021144782A2 (en) 2020-06-16 2021-05-18 Spinal bone fastener assembly

Country Status (1)

Country Link
WO (1) WO2021144782A2 (en)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7955363B2 (en) * 2002-04-18 2011-06-07 Aesculap Implant Systems, Llc Screw and rod fixation assembly and device
EP2335625A1 (en) * 2009-12-21 2011-06-22 Biedermann Motech GmbH & Co. KG Bone anchoring device
US20140358182A1 (en) * 2011-10-05 2014-12-04 Aesculap Ag Readjustable polyaxial pedicle screw
US20160066958A1 (en) * 2013-02-09 2016-03-10 Muralidhara Rudhra Raju Bone screw
US20160338741A1 (en) * 2013-02-09 2016-11-24 Vertiscrew, Llc Bone screw
US20180140330A1 (en) * 2014-11-20 2018-05-24 Biedermann Technologies Gmbh & Co. Kg Receiving part for coupling a bone anchor to a rod and bone anchoring device with such a receiving part

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7955363B2 (en) * 2002-04-18 2011-06-07 Aesculap Implant Systems, Llc Screw and rod fixation assembly and device
EP2335625A1 (en) * 2009-12-21 2011-06-22 Biedermann Motech GmbH & Co. KG Bone anchoring device
US20140358182A1 (en) * 2011-10-05 2014-12-04 Aesculap Ag Readjustable polyaxial pedicle screw
US20160066958A1 (en) * 2013-02-09 2016-03-10 Muralidhara Rudhra Raju Bone screw
US20160338741A1 (en) * 2013-02-09 2016-11-24 Vertiscrew, Llc Bone screw
US20180140330A1 (en) * 2014-11-20 2018-05-24 Biedermann Technologies Gmbh & Co. Kg Receiving part for coupling a bone anchor to a rod and bone anchoring device with such a receiving part

Also Published As

Publication number Publication date
WO2021144782A2 (en) 2021-07-22

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