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WO1996041573A1 - Element de fixation des os autoforant - Google Patents

Element de fixation des os autoforant Download PDF

Info

Publication number
WO1996041573A1
WO1996041573A1 PCT/CH1996/000210 CH9600210W WO9641573A1 WO 1996041573 A1 WO1996041573 A1 WO 1996041573A1 CH 9600210 W CH9600210 W CH 9600210W WO 9641573 A1 WO9641573 A1 WO 9641573A1
Authority
WO
WIPO (PCT)
Prior art keywords
fixation element
bone fixation
element according
bone
thread
Prior art date
Application number
PCT/CH1996/000210
Other languages
German (de)
English (en)
Inventor
Robert Frigg
Markus Hehli
Original Assignee
Synthes Ag Chur
Synthes (U.S.A.)
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 Synthes Ag Chur, Synthes (U.S.A.) filed Critical Synthes Ag Chur
Publication of WO1996041573A1 publication Critical patent/WO1996041573A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • A61B17/68—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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, e.g. stabilisers comprising fluid filler in an implant
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • 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 or setting implements
    • 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
    • A61B17/8061—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones
    • A61B17/8071—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates specially adapted for particular bones for the jaw
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/0414—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors having a suture-receiving opening, e.g. lateral opening
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods
    • A61B17/04—Surgical instruments, devices or methods for suturing wounds; Holders or packages for needles or suture materials
    • A61B17/0401—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors
    • A61B2017/044—Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors with a threaded shaft, e.g. screws
    • 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
    • A61F2/08—Muscles; Tendons; Ligaments
    • A61F2/0811—Fixation devices for tendons or ligaments
    • 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
    • A61F2/28—Bones
    • A61F2/2803—Bones for mandibular reconstruction

Definitions

  • the invention relates to a bone fixation element according to the preamble of patent claim 1.
  • Bone fixation elements in particular in the form of bone screws, are widely used in osteosynthesis.
  • bone fixation element that can be inserted quickly and safely into the bone and serves as an anchor.
  • the first area concerns the jaw area, in which mini screws are required for tooth position corrections.
  • the second area concerns the need for a bone anchor for the fixation of ligaments and tendons.
  • the conventional insertion method in which the thread of the bone screws to be used has to be pre-drilled in the bone in a first step, has proven to be two-time-consuming and complicated, in particular with the small screw dimensions used here.
  • the thread pitch of a bone screw is critical because it determines the cutting speed, ie the feed of the screw, in other words, the screw is forced forward by the height of the thread pitch per revolution. If a thread pitch of approx. 1.75 mm, which is common for bone screws, is used, the drill tip must drill through the bone over a distance of 1.75 mm per revolution. At a normal speed of rotation of a drilling machine used in bone surgery of approx.
  • wires can be screwed into the bone without major preparatory work, they damage the bone due to the high temperatures that occur as a result of the friction between the bone and the wire. Furthermore, the axial stability of bone fragments fixed with wires is not very high, so that the reduction can be lost.
  • the invention seeks to remedy this.
  • the invention has for its object to provide a fixation element which can be inserted into the bone without any preliminary work.
  • the invention solves the problem with a bone fixation element, which has the features of claim 1. Further advantageous embodiments of the invention are characterized in the dependent claims.
  • the front part of the bone fixation element designed as a drill, is expediently designed as a self-tapping, self-drilling, two-lip spiral drill, the outer diameter of which is at most as large as the thread core diameter.
  • the front part expediently has a length of 3 to 18 mm, preferably 4 to 12 mm.
  • Method 1 Volume 1, page 146 (Verlag Otto Walter AG, ⁇ lten, 1950).
  • FIG. 1 shows a schematic illustration of the bone fixation element according to the invention
  • FIG. 2 shows an axial plan view of the bone fixation element according to FIG. 1;
  • FIG. 3 shows a detailed longitudinal section through the thread of the bone fixation element according to FIG. 1;
  • Figure 4 is a section on the line A-A of Figure 1;
  • FIG. 5 shows a schematic illustration of a further embodiment of the bone fixation element according to the invention.
  • FIG. 6 shows an axial top view of the bone fixation element according to FIG. 5;
  • FIG. 7 shows a detailed longitudinal section through the thread of the bone fixation element according to FIG. 5;
  • FIGS. 1-4 show an axial view from below of the bone fixation element according to FIG. 5.
  • the bone fixation element shown in FIGS. 1-4 essentially consists of a head end 1, a shaft part 3 provided with a thread 2 and a front part 4 with a tip 5.
  • the bone fixation element also has a longitudinal axis 7.
  • the front part 4 is designed as a self-tapping, self-drilling, double-lip twist drill 11, whose outer diameter d is smaller than the core diameter D of the thread 2, which extends into the front part 4.
  • the front part 4 has a length of 7-9 mm.
  • the head end 1 is - as shown in Fig. 2 - provided with a central recess 6, in the form of a hexagon socket, which serves to hold an insertion tool.
  • the head end 1 furthermore has a channel running transversely to the longitudinal axis 7 in the form of a through hole 8, which intersects the longitudinal axis 7 perpendicularly.
  • the diameter of the through bore 8 should be approximately 35-50%, preferably 39-44% of the diameter of the head end 1 or of the shaft part 3.
  • the through hole 8 serves to receive a thread or a wire with which either several bone fixation elements can be connected to one another or further osteosynthetic elements or anatomical structures can be anchored to the bone.
  • the bone fixation element can be provided with an outer groove 10 which runs peripherally on the outside 9 of the head end 1 and which runs coaxially to the longitudinal axis 7.
  • the outer groove 10 serves the same purpose as the through hole 8, ie for receiving a thread or wire.
  • the through bore 8 is designed as a slot which is open at the top.
  • the through hole 8, as shown in FIG. 5, is arranged in the shaft part 3 instead of in the head end 1, which in this embodiment has no external groove.
  • the head end 1 has a cross slot 12, which is used to hold an insertion tool, in particular a screwdriver.
  • the bone fixation elements according to the invention can be carried out directly by the surgeon, i.e. without pre-drilling, using a suitable insertion tool, e.g. B. a hexagon, or Phillips screwdriver in the bone.
  • a suitable insertion tool e.g. B. a hexagon, or Phillips screwdriver in the bone.

Landscapes

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

Abstract

L'élément de fixation des os comporte une tête (1), une tige (3) pourvue d'un filetage (2) et une partie avant (4) dotée d'une pointe (5) et conçue sous forme de foret. La tête (1) est pourvue d'un canal, transversal à l'axe longitudinal (7) et ayant la forme d'une perforation traversante (8), et/ou d'une rainure extérieure (10) destinée à recevoir un fil ou un fil métallique.
PCT/CH1996/000210 1995-06-13 1996-06-04 Element de fixation des os autoforant WO1996041573A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH1739/95-3 1995-06-13
CH173995 1995-06-13

Publications (1)

Publication Number Publication Date
WO1996041573A1 true WO1996041573A1 (fr) 1996-12-27

Family

ID=4217450

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CH1996/000210 WO1996041573A1 (fr) 1995-06-13 1996-06-04 Element de fixation des os autoforant

Country Status (1)

Country Link
WO (1) WO1996041573A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2759282A1 (fr) * 1997-02-10 1998-08-14 Eos Medical Dispositif de vis secable pour plaque d'osteosynthese ou pour la coaptation de deux fragments d'os
DE29717413U1 (de) * 1997-09-30 1999-02-04 Degima Medizinprodukte Dr Dr T Fadenanker aus resorbierbarem Kunststoff
FR2770764A1 (fr) * 1997-11-07 1999-05-14 Fixano Cheville permettant la fixation d'un fil de suture ou d'un ligament artificiel a un os
WO1999039653A1 (fr) 1998-02-05 1999-08-12 Institut Straumann Ag Implant dentaire intra-osseux a filetage autotaraudeur
EP1260182A2 (fr) * 2001-05-17 2002-11-27 Ethicon, Inc. Ancrage de suture vissé

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388482A (en) * 1943-01-16 1945-11-06 Herbert H Haynes Surgical screw
US4632100A (en) * 1985-08-29 1986-12-30 Marlowe E. Goble Suture anchor assembly
EP0361756A1 (fr) * 1988-09-19 1990-04-04 E. Marlowe Goble Appareil et procédé pour vérifier le positionnement isométrique du ligament
EP0498709A1 (fr) * 1991-02-05 1992-08-12 SCIENCE ET MEDECINE (Société anonyme) Implant chirurgical osseux pour stabilisateur inter-vertèbral
US5370662A (en) * 1993-06-23 1994-12-06 Kevin R. Stone Suture anchor assembly
EP0657142A1 (fr) * 1993-12-07 1995-06-14 Synthes AG, Chur Elément d'ostéosynthèse

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2388482A (en) * 1943-01-16 1945-11-06 Herbert H Haynes Surgical screw
US4632100A (en) * 1985-08-29 1986-12-30 Marlowe E. Goble Suture anchor assembly
EP0361756A1 (fr) * 1988-09-19 1990-04-04 E. Marlowe Goble Appareil et procédé pour vérifier le positionnement isométrique du ligament
EP0498709A1 (fr) * 1991-02-05 1992-08-12 SCIENCE ET MEDECINE (Société anonyme) Implant chirurgical osseux pour stabilisateur inter-vertèbral
US5370662A (en) * 1993-06-23 1994-12-06 Kevin R. Stone Suture anchor assembly
EP0657142A1 (fr) * 1993-12-07 1995-06-14 Synthes AG, Chur Elément d'ostéosynthèse

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2759282A1 (fr) * 1997-02-10 1998-08-14 Eos Medical Dispositif de vis secable pour plaque d'osteosynthese ou pour la coaptation de deux fragments d'os
DE29717413U1 (de) * 1997-09-30 1999-02-04 Degima Medizinprodukte Dr Dr T Fadenanker aus resorbierbarem Kunststoff
FR2770764A1 (fr) * 1997-11-07 1999-05-14 Fixano Cheville permettant la fixation d'un fil de suture ou d'un ligament artificiel a un os
WO1999039653A1 (fr) 1998-02-05 1999-08-12 Institut Straumann Ag Implant dentaire intra-osseux a filetage autotaraudeur
EP1260182A2 (fr) * 2001-05-17 2002-11-27 Ethicon, Inc. Ancrage de suture vissé
EP1260182A3 (fr) * 2001-05-17 2003-08-13 Ethicon, Inc. Ancrage de suture vissé

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