SE531987C2 - Anordning för att fästa och fixera ett första element mot ett andra element - Google Patents

Anordning för att fästa och fixera ett första element mot ett andra element

Info

Publication number
SE531987C2
SE531987C2 SE0600610A SE0600610A SE531987C2 SE 531987 C2 SE531987 C2 SE 531987C2 SE 0600610 A SE0600610 A SE 0600610A SE 0600610 A SE0600610 A SE 0600610A SE 531987 C2 SE531987 C2 SE 531987C2
Authority
SE
Sweden
Prior art keywords
screw
sleeve
spherical
shape
head
Prior art date
Application number
SE0600610A
Other languages
English (en)
Other versions
SE0600610L (sv
Inventor
Sven Olerud
Original Assignee
Sven Olerud
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 Sven Olerud filed Critical Sven Olerud
Priority to SE0600610A priority Critical patent/SE531987C2/sv
Priority to US11/670,504 priority patent/US20070233116A1/en
Priority to EP07716046A priority patent/EP2004078A4/en
Priority to CA002681172A priority patent/CA2681172A1/en
Priority to PCT/SE2007/000228 priority patent/WO2007108734A1/en
Priority to JP2009501376A priority patent/JP2009530017A/ja
Publication of SE0600610L publication Critical patent/SE0600610L/sv
Publication of SE531987C2 publication Critical patent/SE531987C2/sv

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • 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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8033—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers
    • A61B17/8047—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates having indirect contact with screw heads, or having contact with screw heads maintained with the aid of additional components, e.g. nuts, wedges or head covers wherein the additional element surrounds the screw head in the plate hole
    • 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
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0018—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools characterised by the shape
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0053—Connecting devices for joining an upper structure with an implant member, e.g. spacers with angular adjustment means, e.g. ball and socket joint
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0066—Connecting devices for joining an upper structure with an implant member, e.g. spacers with positioning means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • F16B35/048—Specially-shaped necks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/06—Specially-shaped heads
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B37/00—Nuts or like thread-engaging members
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • F16B43/02—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts with special provisions for engaging surfaces which are not perpendicular to a bolt axis or do not surround the bolt
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B5/00—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them
    • F16B5/02—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread
    • F16B5/025—Joining sheets or plates, e.g. panels, to one another or to strips or bars parallel to them by means of fastening members using screw-thread specially designed to compensate for misalignement or to eliminate unwanted play
    • 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
    • A61B17/80—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates
    • A61B17/8052—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded
    • A61B17/8057—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates immobilised relative to screws by interlocking form of the heads and plate holes, e.g. conical or threaded the interlocking form comprising a thread
    • 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
    • A61B17/8605—Heads, i.e. proximal ends projecting from bone
    • 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
    • A61B17/8665—Nuts
    • A61B2017/867—Nuts with integral locking or clamping means
    • A61B2017/868—Nuts with integral locking or clamping means self-locking due to part of nut being deformed upon tightening
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A61C8/005—Connecting devices for joining an upper structure with an implant member, e.g. spacers
    • A61C8/0069—Connecting devices for joining an upper structure with an implant member, e.g. spacers tapered or conical connection

Description

Dessa nya system har emellertid den nackdelen att de är otympliga och utrymmeskrävande, och de inte är så enkla att handha då ofta mint två skruvar krävs för att fästa elementen vid varandra. Det är svårt att med dessa system skruva in skruvarna i ett vinklat läge mot metallplattan för att inkludera ett viktigt benfragment i osteosynthesen och i alla fall sitta fast i plattan.
Kort redogörelse av uppfinningstanken Föreliggande uppfinning har till uppgift att undanröja ovannämnda problem och nackdelar vid sammanfogning och fixering av två element med varandra med en skruv eller liknande oberoende av skruvens axiella eller vinkel position.
I enlighet med uppfinningsidén löses ovannämnda problem genom att nämnda första element har ett sfäriskt hål i vilket en formbar hylsa är anordnad i form av en ringhylsa, vilken är uppdelad i segment, flänsar, och som har en sfärisk form som passar in i hålets sfäriska form och vilken ringhylsa har en koniskt gängad inre form vilken är komplementär mot skruvhuvudets yttre gängade form varvid skruven vid inskruvningen fäster det första elementet i önskad valfri vinkel mot det andra elementet (9) och fixerar skruvförbandet i detta läge.
Kortfattad beskrivning av bifogade ritningar Figur 1 visar en, i anordningen enligt föreliggande uppfinning, ingående platta, företrädesvis av metall, sedd framifrån. 53% 53? Figur 2 visar plattan i figur 1 sedd från sidan i genomskärning längs snitt A-A i figur 1.
Figur 3 visar en, i anordningen enligt föreliggande uppfinning, ingående sfärisk, formbar och slitsad hylsa sedd från sidan i perspektivvy.
Figur 4 visar den sfäriska, slitsade hylsan i figur 3 sedd underifrån i horisontalvy.
Figur 5 visar den sfäriska hylsan sedd från sidan i vertikalvy.
Figur 6 visar den sfäriska hylsan sedd från sidan i genomskärning i vertikalvy med en skruv vars yttre gängade, koniska huvud är inskruvad ända in i hylsans inre koniska gängade del.
Figur 7 visar den övre delen av skruven med konisk skalle ingående i anordningen enligt föreliggande uppfinning sedd från sidan i perspektivvy.
Figur 8 visar hela skruven i figur 7 sedd från sidan i perspektivvy.
Figur 9 visar skruven i figur 8 sedd uppifrån i horisontalvy.
Detajerad beskrivning av en föredragen utföruingsform av uppfinningen I figurerna l och 2 visas en, i anordningen enligt föreliggande uppfinning, ingående platta 1, företrädesvis av metall. Plattan l har ett sfäriskt hål 2.
I figurerna 3,4,5 visas en hylsa 3, också av metall, sfärisk till formen med uppslitsade spår 4 med en kvarlämnande tunn förbindelse mellan de uppkomna flänsarna.
Denna förbindelse 6 tillåter, utan att deformeras, flänsarna 5 att buktas in så att hylsan 3 kan klämmas in i plattans l sfäriska hål 2. Hylsan 3 hålls på plats inne i det sfäriska hålet 2 när flänsarna 5 återtar si normala form. Hylsans 3 sfäriska form gör att den till viss gräns kan uppta sneda inställningar. Hylsan 3_är till större delen konisk till formen och blir cylindrisk i dess nedre del. Insidan av hylsans 3 koniska del är försedd med gänga ll.
I figur 6 visas den sfäriska hylsan 3 sedd från sidan i genomskärning i vertikalvy med en skruv 7 som har ett koniskt huvud 8 med en gänga 12. Vid slutdragning av skruven 7 tar denna gäng med hylsans 3 gänga ll, samtidigt som den uppslitsade hylsan 3 expanderar och låser hylsan mot hålets 2 sfär i plattan 1.
I figurerna 7,8 och 9 visas skruven 7 med sitt koniska huvud 8 med gängor 12 med liten stigning i förhållande till skruvens 7 nedre del som har något större gängor med större stigning för lämplig fixering i benvävnad.
När de två elementen skall sammanfogas med varandra med en anordning enligt uppfinningen för att fästa det första elementet 1 med det andra elementet 9 medelst en skruv 7, för man skruven 7 in genom hylsan 3 så långt att det nuddar det andra elementet Därefter bestämmer man den riktning på skruven 7 som man önskar, fortsätter sen indrivningen av skruvens 7 nedre gänga 14 in i det andra elementet 9.
Slutdragningen sker när skruvskallens 8 gänga 12 totalt fyller ut den koniska gängan ll i hylsan 3.

Claims (2)

PATENTKRAV
1. Anordning för att vid kirurgisk användning av skruvförband, fästa och fixera ett första element t.ex. i form av ett implantat mot ett andra element t.ex. i form av en benvävnad medelst en skruv med dels ett koniskt huvud med konen mot skruvspetsen och vilket huvud har en utvändig gänga med liten stigning vilken är avsedd att skruvas in i det första elementet, och dels en huvudgänga på skruvens stam vilken är avsedd att skruvas in i det andra elementet, kännetecknad av att nämnda första element (1) har ett sfäriskt hål (2) i vilket en formbar hylsa (3) är anordnad i form av en ringhylsa (3), vilken är uppdelad i segment, flänsar, (5) och som har en sfärisk form som passar in i hálets (2) sfäriska form och vilken ringhylsa (3) har en koniskt gängad inre form vilken är komplementär mot skruvhuvudets (8) yttre gängade form varvid skruven (7) vid inskruvningen fäster det första elementet (1) i önskad valfri vinkel mot det andra elementet (9) och fixerar skruvförbandet i detta läge.
2. Anordning enligt kravet 1, kännetecknad av att ringhylsan,(3) innefattar en tunn ringformig del (6) vilken sammanbinder segmenten, flänsarna, (5) och underlättar införandet av hylsan (3) i det sfäriska hålet (2) i det första elementet (1).
SE0600610A 2006-03-17 2006-03-17 Anordning för att fästa och fixera ett första element mot ett andra element SE531987C2 (sv)

Priority Applications (6)

Application Number Priority Date Filing Date Title
SE0600610A SE531987C2 (sv) 2006-03-17 2006-03-17 Anordning för att fästa och fixera ett första element mot ett andra element
US11/670,504 US20070233116A1 (en) 2006-03-17 2007-02-02 Bone fixation assembly
EP07716046A EP2004078A4 (en) 2006-03-17 2007-03-12 ARRANGEMENT TO ATTACH AND FIX A FIRST ELEMENT AGAINST ANOTHER ELEMENT
CA002681172A CA2681172A1 (en) 2006-03-17 2007-03-12 Arrangement for fastening and fixing a first element against another element
PCT/SE2007/000228 WO2007108734A1 (en) 2006-03-17 2007-03-12 Arrangement for fastening and fixing a first element against another element
JP2009501376A JP2009530017A (ja) 2006-03-17 2007-03-12 ある部材を他の部材に締め付け固定するための装置

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE0600610A SE531987C2 (sv) 2006-03-17 2006-03-17 Anordning för att fästa och fixera ett första element mot ett andra element

Publications (2)

Publication Number Publication Date
SE0600610L SE0600610L (sv) 2007-09-18
SE531987C2 true SE531987C2 (sv) 2009-09-22

Family

ID=38522699

Family Applications (1)

Application Number Title Priority Date Filing Date
SE0600610A SE531987C2 (sv) 2006-03-17 2006-03-17 Anordning för att fästa och fixera ett första element mot ett andra element

Country Status (6)

Country Link
US (1) US20070233116A1 (sv)
EP (1) EP2004078A4 (sv)
JP (1) JP2009530017A (sv)
CA (1) CA2681172A1 (sv)
SE (1) SE531987C2 (sv)
WO (1) WO2007108734A1 (sv)

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CA2681172A1 (en) 2007-09-27
EP2004078A1 (en) 2008-12-24
US20070233116A1 (en) 2007-10-04
WO2007108734A1 (en) 2007-09-27
SE0600610L (sv) 2007-09-18
EP2004078A4 (en) 2012-03-21

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