EP2012694A1 - Implant de fixation de deux parties d'os à connecter mutuellement - Google Patents

Implant de fixation de deux parties d'os à connecter mutuellement

Info

Publication number
EP2012694A1
EP2012694A1 EP07711753A EP07711753A EP2012694A1 EP 2012694 A1 EP2012694 A1 EP 2012694A1 EP 07711753 A EP07711753 A EP 07711753A EP 07711753 A EP07711753 A EP 07711753A EP 2012694 A1 EP2012694 A1 EP 2012694A1
Authority
EP
European Patent Office
Prior art keywords
clamping
contact element
bridge
clamping elements
bone parts
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.)
Withdrawn
Application number
EP07711753A
Other languages
German (de)
English (en)
Inventor
Pedro Morales
Dieter Weisshaupt
Manfred Dworschak
Theodor Lutze
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.)
Aesculap AG
Original Assignee
Aesculap 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 Aesculap AG filed Critical Aesculap AG
Publication of EP2012694A1 publication Critical patent/EP2012694A1/fr
Withdrawn legal-status Critical Current

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
    • A61B17/82—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin for bone cerclage
    • A61B17/823—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin for bone cerclage for the sternum
    • 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
    • A61B17/688—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin for reattaching pieces of the skull
    • 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
    • A61B17/8869—Tensioning devices
    • 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
    • A61B17/8872—Instruments for putting said fixation devices against or away from the bone

Definitions

  • the invention relates to an implant for fixing two bone parts to be connected to one another with a first plate-shaped contact element for abutment on inner surfaces of the bone parts, with at least two clamping elements attached thereto, projecting transversely from this contact element, with a second plate-shaped contact element for engaging outer surfaces of the bone parts. which is clamped by means of the guided through the gap between the bone parts clamping elements against the first contact element.
  • Such an implant is described for example in DE 103 26 690 B4.
  • the contact elements are rectangular and are clamped by two pin-shaped clamping elements against each other, which protrude through the gap between the bone parts fauxzuspannenden. This ensures that the rectangular abutment elements are arranged parallel to this gap-shaped gap between the bone parts and also parallel to each other, that is, the relative orientation of the abutment elements can be ensured by the provision of two such clamping elements.
  • the clamping element are stabilized and the free ends of the clamping elements are covered, so that injury to these free ends or snagging is excluded.
  • the bridge is immovably connected to the clamping elements in the clamping direction. Then, the bridge can serve as an abutment for a clamping tool, with which the second contact element is clamped against the first contact element.
  • clamping elements may be formed as pins.
  • the bridge with the clamping elements is connected immovably by a squeezing.
  • the clamping elements can be inserted into holes in the bridge, so that thereby an exact parallel guidance of the clamping elements can be achieved.
  • the bridge has a contact surface for a clamping device, which with two clamping tools on the one hand on the contact surface and on the other sen surface of the second contact element can be applied and when pushing apart the clamping tools, the second contact element against the first Clamping element.
  • the contact surface and the adjoining clamping tool are formed such that the clamping tool is supported on the bridge in the middle between two clamping elements. This gives a clear support point for the clamping tools, which is located at the bridge in the middle between the two clamping elements, and therefore the clamping forces can engage symmetrically to the clamping elements on the second contact element.
  • the voltage applied to the second contact element clamping tool can be applied at two points on the second contact element, which are arranged in the plane spanned by two clamping elements at a distance from each other and from the center between the two clamping elements.
  • the contact surface on the bridge can extend in a circular arc, so that the voltage applied to the contact surface clamping tool is inevitably pushed in the lowest point of the contact surface and thus in the middle between the two clamping elements, especially if the applied clamping tool is formed in a similar circular arc ,
  • the abutment elements project transversely from them, each bearing to the other investment element Fixiervorsprünge and that these Fixiervorsprünge are inclined so that their distance from the Fixiervorsprüngen on the opposite side of the contact element of the contact element to the free end of Fixing projections increases towards.
  • Such an embodiment results in the clamping of the two contact elements to the fact that the bone parts are pushed towards each other in the penetration of the Fixiervorsprünge in the bone parts, since the bone parts are moved in the direction of the approach points of Fixiervorsprünge to the contact elements and there the distance of the Fixiervorsprünge at the bases of Fixing projections is smaller than at the free ends.
  • FIG. 1 shows a perspective view of two schematically represented bone parts with an implant for their connection before the tensioning of the abutment elements which can be applied to the bone parts;
  • FIG. 2 shows an enlarged view of the implant of FIG. 1 in the region of a bridge connecting two clamping elements in the direction of the arrow A in FIG. 1 and FIG
  • FIG. 3 shows an enlarged detail view of the region B in FIG. 2.
  • the two bone parts 1, 2 to be connected to one another can be, for example, two plate-shaped parts of the skull bone or the parts of the rib bones that are separated from one another during cardiac surgery and are separated along the sternum.
  • the bone parts 1, 2 are shown very simplified schematically, it is only essential that the bone parts 1, 2 at the same height and along a gap 3 between the bone parts 1, 2 are to be fixed approximately relative to each other.
  • This fixation takes place with the aid of an implant 4, which comprises a rectangular-shaped first abutment plate 5 and a likewise rectangular second abutment plate 6.
  • the first bearing plate 5 has perpendicularly projecting from her and pointing in the direction of the second bearing plate 6, tooth-shaped Fixiervorsprünge 7, which are arranged along the edges of the first bearing plate 5, and in the same way are on the second bearing plate 6 in the direction of the first Investment plate 5 facing fixation 8 arranged. All Fixiervorsprünge 7, 8 run out pointed and are therefore suitable when pressing the Investment plates 5, 6 at the bone parts 1, 2 penetrate into the bone material.
  • all fixing projections 7, 8 are inclined so that the distance between the fixing projections on opposite edges of the bearing plates, starting from the bases of Fixiervorsprünge 7, 8 on the bearing plates 5, 6 towards the free ends of the Fixiervorsprünge 7, 8 becomes larger, that is the fixing projections 7, 8 are slightly inclined outwards. This results in that in the mutual clamping of the bearing plates 5, 6 and the penetration of the Fixiervorsprünge 7, 8 in the bone parts 1, 2, these are approximated to each other, that is, in the plane of the bearing plates 5, 6 are stretched against each other.
  • dowel pins 9, 10 From the first contact plate 5 are two spaced apart and lying in the longitudinal center plane of the contact plate 5 dowel pins 9, 10 which are parallel to each other and whose length is substantially greater than the thickness of the bone parts to be joined together 1, 2. These dowel pins 9, 10 pass through openings 11, 12 in the second contact plate 6, this second contact plate 6 is mounted along the dowel pins 9, 10 slidably on this.
  • the first bearing plate 5 facing part of the dowel pins 9, 10 carry a profiling, for example, extending in the circumferential direction ribs 13, and these serve to fix the second bearing plate 6 in different positions along the dowel pins 9, 10.
  • the first abutment plate 5 facing away portion of the dowel pins 9, 10 carries no such ribs 13, but is smooth, and the free ends of the two dowel pins 9, 10 are in holes 15, 16 of the two dowel pins 9, 10 interconnecting bridge 17th inserted, which terminates with the free ends of the dowel pins 9, 10.
  • the bridge 17 is deformed by a crimping tool in the region of the holes 15, 16 so that the bridge 17 is held immovably in the axial direction on the dowel pins 9, 10, by this crimping 17 pinch lines 18 are generated on the outside of the bridge, which the Having shape of circumferential grooves (Figure 3).
  • the bridge 17 fixes the two dowel pins 9, 10 relative to each other at the same distance in which the dowel pins 9, 10 are held on the first contact plate 5.
  • the bridge 17 On its side facing the two bearing plates 5, 6, the bridge 17 has a circular cross-section contact surface 19 which is disposed between the two holes 15 and 16, so that the lowest point of the contact surface 19 exactly in the middle between the holes 15th and 16 lies.
  • This contact surface 19 forms a support surface for an upper clamping tool 20 of a clamping device 21 shown only very schematically in Figure 1, which can be applied with a lower clamping tool 22 at the top of the second contact plate 6, and immediately adjacent to the openings 11, 12 and outside Both clamping pins 9, 10.
  • the clamping tools 20 and 22 in the plane spanned by the clamping pins 9, 10 level at a total of three points come to rest so that when moving apart of the clamping tools 20 and 22 at three points forces in the implant 4th be initiated, namely an upward drag K in the Center between the two dowel pins 9, 10 on the contact surface 19 of the bridge 17 and in the direction of the first contact plate directed clamping forces L 1 and L 2 in the area between the narrow edges of the second contact plate 6 and the openings 11, 12 at the top of the second Plating plate 6. It is thereby possible, the second contact plate 6 tilt-free along the dowel pins 9, 10 to move against the first contact plate 5 and thereby clamp the bone parts 1, 2 between the two bearing plates 5, 6.
  • the bridge 17 not only assumes the task of stabilizing the dowel pins 9, 10 against each other and to cover the free ends of the dowel pins 9, 10, but the bridge 17 acts simultaneously as a contact element for the clamping tool 20 of the clamping device 21st
  • dowel pins 9, 10 are held in this cutting operation on the bridge 17, optionally with the aid of a suitable tool which acts directly on the bridge 17.

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • 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)
  • Neurosurgery (AREA)
  • Surgical Instruments (AREA)

Abstract

L'invention concerne un implant de fixation de deux parties d'os à connecter mutuellement, comportant un premier élément d'appui en forme de plaque destiné à s'appuyer contre des surfaces intérieures des parties d'os, au moins deux éléments de serrage fixés à l'élément d'appui, faisant saillie perpendiculairement par rapport à celui-ci, et un deuxième élément d'appui en forme de plaque destiné à s'appuyer contre des surfaces extérieures des parties d'os, pouvant être serré par rapport au premier élément d'appui au moyen des éléments de serrage guidés au travers de l'interstice situé entre les parties d'os. Pour simplifier la manipulation de l'implant lors du serrage, les éléments de serrage sont connectés l'un à l'autre par un pont sur leur extrémité opposée au premier élément d'appui.
EP07711753A 2006-04-28 2007-03-02 Implant de fixation de deux parties d'os à connecter mutuellement Withdrawn EP2012694A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006021024A DE102006021024B3 (de) 2006-04-28 2006-04-28 Implantat zur Festlegung von zwei miteinander zu verbindenden Knochenteilen
PCT/EP2007/001792 WO2007124808A1 (fr) 2006-04-28 2007-03-02 Implant de fixation de deux parties d'os à connecter mutuellement

Publications (1)

Publication Number Publication Date
EP2012694A1 true EP2012694A1 (fr) 2009-01-14

Family

ID=38068877

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07711753A Withdrawn EP2012694A1 (fr) 2006-04-28 2007-03-02 Implant de fixation de deux parties d'os à connecter mutuellement

Country Status (4)

Country Link
US (1) US20070276387A1 (fr)
EP (1) EP2012694A1 (fr)
DE (1) DE102006021024B3 (fr)
WO (1) WO2007124808A1 (fr)

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US9017381B2 (en) 2007-04-10 2015-04-28 Biomet Sports Medicine, Llc Adjustable knotless loops
US8128658B2 (en) 2004-11-05 2012-03-06 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to bone
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US8361113B2 (en) 2006-02-03 2013-01-29 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US8303604B2 (en) 2004-11-05 2012-11-06 Biomet Sports Medicine, Llc Soft tissue repair device and method
US8298262B2 (en) 2006-02-03 2012-10-30 Biomet Sports Medicine, Llc Method for tissue fixation
US9801708B2 (en) 2004-11-05 2017-10-31 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US7658751B2 (en) 2006-09-29 2010-02-09 Biomet Sports Medicine, Llc Method for implanting soft tissue
US8137382B2 (en) 2004-11-05 2012-03-20 Biomet Sports Medicine, Llc Method and apparatus for coupling anatomical features
US7857830B2 (en) 2006-02-03 2010-12-28 Biomet Sports Medicine, Llc Soft tissue repair and conduit device
US7749250B2 (en) 2006-02-03 2010-07-06 Biomet Sports Medicine, Llc Soft tissue repair assembly and associated method
US8840645B2 (en) 2004-11-05 2014-09-23 Biomet Sports Medicine, Llc Method and apparatus for coupling soft tissue to a bone
US7905904B2 (en) 2006-02-03 2011-03-15 Biomet Sports Medicine, Llc Soft tissue repair device and associated methods
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US11259792B2 (en) 2006-02-03 2022-03-01 Biomet Sports Medicine, Llc Method and apparatus for coupling anatomical features
US8562645B2 (en) 2006-09-29 2013-10-22 Biomet Sports Medicine, Llc Method and apparatus for forming a self-locking adjustable loop
US11311287B2 (en) 2006-02-03 2022-04-26 Biomet Sports Medicine, Llc Method for tissue fixation
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US8597327B2 (en) 2006-02-03 2013-12-03 Biomet Manufacturing, Llc Method and apparatus for sternal closure
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US8652171B2 (en) 2006-02-03 2014-02-18 Biomet Sports Medicine, Llc Method and apparatus for soft tissue fixation
US8801783B2 (en) 2006-09-29 2014-08-12 Biomet Sports Medicine, Llc Prosthetic ligament system for knee joint
US9078644B2 (en) 2006-09-29 2015-07-14 Biomet Sports Medicine, Llc Fracture fixation device
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US8506597B2 (en) 2011-10-25 2013-08-13 Biomet Sports Medicine, Llc Method and apparatus for interosseous membrane reconstruction
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US9918826B2 (en) 2006-09-29 2018-03-20 Biomet Sports Medicine, Llc Scaffold for spring ligament repair
US8672969B2 (en) 2006-09-29 2014-03-18 Biomet Sports Medicine, Llc Fracture fixation device
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US11259794B2 (en) 2006-09-29 2022-03-01 Biomet Sports Medicine, Llc Method for implanting soft tissue
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Also Published As

Publication number Publication date
US20070276387A1 (en) 2007-11-29
DE102006021024B3 (de) 2008-01-03
WO2007124808A1 (fr) 2007-11-08

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