CA2693395A1 - Device for fixation of bone fractures - Google Patents

Device for fixation of bone fractures Download PDF

Info

Publication number
CA2693395A1
CA2693395A1 CA2693395A CA2693395A CA2693395A1 CA 2693395 A1 CA2693395 A1 CA 2693395A1 CA 2693395 A CA2693395 A CA 2693395A CA 2693395 A CA2693395 A CA 2693395A CA 2693395 A1 CA2693395 A1 CA 2693395A1
Authority
CA
Canada
Prior art keywords
bore
insert
screw
polymer
set forth
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
CA2693395A
Other languages
French (fr)
Other versions
CA2693395C (en
Inventor
Klaus Dorawa
Manuel Schwager
Christopher Rast
Marcel Aeschlimann
Philipp Seiler
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.)
Woodwelding AG
Stryker European Operations Holdings LLC
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
Priority claimed from EP20070013815 external-priority patent/EP2014247B1/en
Priority claimed from US11/879,045 external-priority patent/US8556947B2/en
Application filed by Individual filed Critical Individual
Publication of CA2693395A1 publication Critical patent/CA2693395A1/en
Application granted granted Critical
Publication of CA2693395C publication Critical patent/CA2693395C/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
    • A61B17/84—Fasteners therefor or fasteners being internal fixation devices
    • A61B17/86—Pins or screws or threaded wires; nuts therefor
    • A61B17/864—Pins or screws or threaded wires; nuts therefor hollow, e.g. with socket or cannulated
    • 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
    • A61B17/74—Devices for the head or neck or trochanter of the femur
    • 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
    • A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts
    • 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
    • A61B17/88—Osteosynthesis instruments; Methods or means for implanting or extracting internal or external fixation devices
    • A61B17/8802—Equipment for handling bone cement or other fluid fillers
    • A61B17/8805—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it
    • A61B17/8822—Equipment for handling bone cement or other fluid fillers for introducing fluid filler into bone or extracting it characterised by means facilitating expulsion of fluid from the introducer, e.g. a screw pump plunger, hydraulic force transmissions, application of vibrations or a vacuum
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B2017/00831—Material properties
    • A61B2017/00955—Material properties thermoplastic
    • 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
    • A61B2017/8655—Pins or screws or threaded wires; nuts therefor with special features for locking in the bone

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Neurology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Surgical Instruments (AREA)
  • Dowels (AREA)

Abstract

A device and method for fixation of fractures having a screw (10) comprising a shank with an end portion on the outer surface of which a thread (12) is configured, and comprising a through bore. The through bore comprises two' bore portions differing in diameter (16, 17). The step (18) in the diameter between the these bore portions is arranged adjoining the end of the screw having the thread. This step in diameter can support a insert (30, 50) which in turn supports a polymer pin (20, 40) when the latter is pressurized in the screw. Together with an applied ultrasonic vibration the pressure fluidizes the polymer pin and presses the material through holes configured in the wall of the screw.

Claims (14)

1. A device for fixation of a fracture, having a screw (10) comprising a shank, at the one end portion of which a thread (12) is configured, the screw (10) comprising along its longitudinal centre line a through bore having a first bore portion (16) with a first diameter and a second bore portion (17) with a second diameter, wherein the first diameter is larger than the second diameter and the second bore portion (17) is arranged at the end portion of the shank with the thread (12), a step (18) in the diameter is configured between the first and the second bore portion (16, 17), the device further includes an insert (30, 50) and a polymer pin (20, 40) for insertion together into the bore portion (16) of the screw (10), wherein the insert comprises a disc-shaped portion (32, 52) dimensioned so that is rests on the step (18) in the diameter when the insert (30, 50) is inserted into the screw.
2. The device as set forth in claim 1, wherein the insert (30, 50) is made of a material being harder than the material of the polymer pin (20, 40).
3. The device as set forth in claim 1, wherein the screw (10) further comprises holes (14) configured in the wall of the screw in the bore portion (16) and adjoining the step (18) in the diameter.
4. The device as set forth in claim 1 wherein the insert (30) comprises a pin-shaped end (34), and wherein in the one end of the polymer pin (20) a cavity is configured, corresponding to the pin-shaped end (34) and into which this end (34) is insertable.
5. The device as set forth in claim 1 wherein the insert (50) comprises a first snap-mounting end, and wherein at the one end of the polymer pin (40) a second snap-mounting end is configured corresponding to the first snap-mounting end with which it is connectable.
6. The device as set forth in claim 5, wherein the first snap-mounting end of the insert comprises a pin-shaped portion (54) and a ball head (56).
7. A method for fixation of a fracture comprising the steps:
screwing a screw into a fractured object, combining a polymer pin with an insert, inserting the polymer pin together with the insert into an axial through bore in the screw, pressurizing the polymer pin, wherein the polymer pin is supported by the insert which is in turn supported by a step in the diameter in the through bore, resulting in the polymer pin being fluidized at its tip, the fluidized polymer material being pressed out of the screw and augmenting the screw in the object.
8. A method for fixation of a fracture in an object, comprising:
inserting a fastener having a bore therein and parts for communicating between the bore and the object across a fracture site;
inserting a polymer pin into the bore of the fastener;
ultrasonically melting the polymer pin; and forcing the melted polymer through the ports in the fastener and into the object.
9. The method as set forth in claim 8, wherein a leading end of the polymer pin contacts an insert.
10. The method as set forth in claim 9, wherein the bore has an annular step formed therein for contacting the insert, the step formed adjacent the ports in the fastener.
11. The method as set forth in claim 10, further comprising mounting the insert on the leading end of the polymer pin and sliding the combination along the bore until the step is contacted.
12. The method as set forth in claim 8, wherein the force applied to the melted polymer is constant as the melted polymer exits the ports.
13. The method as set forth in claim 8, wherein the bore has an open end acting as one of the ports.
14. The method as set forth in claim 12, wherein the fastener is a cannulated bone screw.
CA2693395A 2007-07-13 2008-07-11 Device for fixation of bone fractures Expired - Fee Related CA2693395C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
EP20070013815 EP2014247B1 (en) 2007-07-13 2007-07-13 Device for fixation of bone fractures
US11/879,045 US8556947B2 (en) 2007-07-13 2007-07-13 Device for fixation of bone fractures
EP07013815.1 2007-07-13
US11/879,045 2007-07-13
PCT/EP2008/005701 WO2009010247A1 (en) 2007-07-13 2008-07-11 Device for fixation of bone fractures

Publications (2)

Publication Number Publication Date
CA2693395A1 true CA2693395A1 (en) 2009-01-22
CA2693395C CA2693395C (en) 2012-11-06

Family

ID=39938205

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2693395A Expired - Fee Related CA2693395C (en) 2007-07-13 2008-07-11 Device for fixation of bone fractures

Country Status (5)

Country Link
JP (1) JP5302306B2 (en)
CN (1) CN101765411B (en)
AU (1) AU2008277955B2 (en)
CA (1) CA2693395C (en)
WO (1) WO2009010247A1 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2140824B1 (en) * 2008-07-01 2016-06-08 Biedermann Technologies GmbH & Co. KG Cannulated bone anchor with plug member and tool for inserting the plug member into the bone anchor
WO2010127462A1 (en) * 2009-05-06 2010-11-11 Woodwelding Ag Device for dispensing a material with thermoplastic properties in a flowable state at an operation site in a human or animal patient
JP5960056B2 (en) 2009-11-09 2016-08-02 スパインウェルディング・アクチェンゲゼルシャフトＳｐｉｎｅｗｅｌｄｉｎｇ Ａｇ MEDICAL DEVICE AND METHOD OF LOCKING DEVICE IN AN BODY OF ANIMALS EXCEPT HUMAN USING THE SAME
PL3045129T3 (en) 2010-09-30 2018-08-31 Spinewelding Ag Surgical stabilizer plate
DE102011001264A1 (en) * 2011-03-14 2012-09-20 Aesculap Ag Surgical K-wire and surgical screw system
DE102011017602B4 (en) * 2011-04-27 2015-05-07 Silony Medical International AG Bone screw with locking device
JP6884772B2 (en) 2015-09-30 2021-06-09 スパインウェルディング・アクチェンゲゼルシャフトＳｐｉｎｅｗｅｌｄｉｎｇ Ａｇ System with medical equipment
WO2019137921A1 (en) * 2018-01-09 2019-07-18 Spinewelding Ag Implant fixation
EP3749237A1 (en) 2018-02-08 2020-12-16 Spinewelding AG System and method for establishing an anchorage or reinforcement in an object with the aid of in situ liquefaction and displacement of a material having thermoplastic properties

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1363543B1 (en) * 2001-03-02 2006-09-06 Woodwelding AG Implants and device for joining tissue parts
JP2003159258A (en) * 2001-11-29 2003-06-03 Ichiro Okutsu Bone fracture treatment instrument for injecting fluid
US7008226B2 (en) * 2002-08-23 2006-03-07 Woodwelding Ag Implant, in particular a dental implant
US8070753B2 (en) * 2004-12-06 2011-12-06 Dfine, Inc. Bone treatment systems and methods
US20070260250A1 (en) * 2006-05-05 2007-11-08 Sdgi Holdings, Inc. Reinforcement of boney material surrounding a bone implant

Also Published As

Publication number Publication date
WO2009010247A1 (en) 2009-01-22
AU2008277955B2 (en) 2011-05-12
JP5302306B2 (en) 2013-10-02
CN101765411A (en) 2010-06-30
AU2008277955A1 (en) 2009-01-22
JP2010532696A (en) 2010-10-14
CA2693395C (en) 2012-11-06
CN101765411B (en) 2012-07-18

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MKLA Lapsed

Effective date: 20220711