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EP2996593A1 - Implant pour la stabilisation de fracture extracorticale - Google Patents

Implant pour la stabilisation de fracture extracorticale

Info

Publication number
EP2996593A1
EP2996593A1 EP13727507.9A EP13727507A EP2996593A1 EP 2996593 A1 EP2996593 A1 EP 2996593A1 EP 13727507 A EP13727507 A EP 13727507A EP 2996593 A1 EP2996593 A1 EP 2996593A1
Authority
EP
European Patent Office
Prior art keywords
implant
bone
implant according
contact
grooves
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Withdrawn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
EP13727507.9A
Other languages
German (de)
English (en)
Inventor
Hubert Pius NOETZLI
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.)
Individual
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
Application filed by Individual filed Critical Individual
Publication of EP2996593A1 publication Critical patent/EP2996593A1/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Withdrawn legal-status Critical Current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
    • 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
    • A61B17/809—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with bone-penetrating elements, e.g. blades or prongs
    • 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
    • A61B17/82—Internal fixation devices, including fasteners and spinal fixators, even if a part thereof projects from the skin for bone cerclage
    • 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
    • A61B17/8085—Cortical plates, i.e. bone plates; Instruments for holding or positioning cortical plates, or for compressing bones attached to cortical plates with pliable or malleable elements or having a mesh-like structure, e.g. small strips

Definitions

  • the invention relates to an implant for osteosynthesis, in particular in humans, which is pressed by means of a wire, cable or tape to the bone by enclosing and connects in the specially trained contact zones on the underside of the implant with the bone under the contact pressure such that a displacement of the bone relative to the implant is prevented.
  • Implants for osteosynthesis have been used for quite some time and in a variety of constructions in human and veterinary medicine.
  • a very commonly used design is the plate with through holes for screwing in the bone.
  • the fixation can be severely limited by screws just by this markraum religiousde implant.
  • Osteoporosis and thin corticals in conjunction with a markraum diaryden implant represent the fracture supplies the greatest challenge dar.
  • a known solution is the use of cerclages by means of wires, cables or bands for fixation of the plates on the bone instead of fixation by means of screws.
  • This fixation is associated with a high failure rate due to the lack of rotational stability with the conventional plate systems.
  • various plate inserts have been developed for improved guidance of the wires. In the process, such inserts screwed into the plate hole do not contribute to the rotational stability without direct bony contact. Inserts that require a unicortical borehole, while improving rotational stability, are at least partially afflicted with the aforementioned drawbacks of screws and, in addition, can not be sufficiently deep seated on thin cortical bone, compromising their stability.
  • EP 0 355 035 B1 discloses an implant which has special points of contact between the implant and the bone, which define contact surfaces which are as small as possible when the implant is pressed against the bone.
  • the aim of these defined points of contact is to keep the entire contact surface of the implant on the bone as low as possible, in order to allow a good circulation of the periosteum and thus of the bone.
  • the disadvantage of this concept is that, firstly, only very few of these points of contact actually come into contact with the bone, and secondly, these points of contact do not have a defined surface for the support on the bone, which could hinder a displacement of the implant on the bone.
  • the described disadvantages are solved by the implant according to the invention by increasing a multiplicity of contact points in their individual area and by forming a special surface in such a way that the surface engages in the bone under the contact pressure in the contact zones through the periosteum and thus a displacement of the implant prevented on the bone surface in all directions.
  • the implant according to the invention by one or more contact zones of the implant are formed flat and have a special surface, which meshes by the engagement of several tips and / or teeth of this surface in the periosteum and the underlying bone, said teeth between the implant and the bone, the actual rotation and axis stable bone / implant interface forms. It shows:
  • Fig. 1 is a schematic representation of an embodiment of the inventive implant in the form of a plate with a bottom which has special contact zones for contact with the bone.
  • FIG. 2 shows a plan view of the underside of an implant according to the invention to illustrate the groove structures of one of the contact zones.
  • Fig. 3 is a plan view of the top of an inventive implant, which can be absorbed by its cylindrical attachment in a plate.
  • the embodiment of the implant (1) shown in FIG. 1 is one possible variant of many.
  • This implant (1) allows both the common fixation by means of one or more bone screws (4) through the existing through holes for this purpose (40) and the fixation by Cerclage (2) which the implant (1) and the bone (3) together includes.
  • the contact zones (11) projecting on the underside (10) of the illustrated implant (1) comprise a number of peaks and / or teeth (13) formed by grooves (12) notched in different directions with aligned elongated sharp edges (131).
  • the top side (20) of the implant (1) may have grooves (21) which hold the cerclage (2) in position relative to the implant when the cerclage (2) engages in one of these grooves (21).
  • the plan view shown in FIG. 2 of a contact zone (11) on the underside (10) of the implant (1) according to the invention illustrates how the teeth (13) are shaped by the shape (120) of the grooves (12) whose directions (121). and their pitches (122a-n) are formed between the grooves (12) of the same direction (121a-n).
  • the teeth have no sharp points, but elongated sharp edges (131) in different directions (131a-n), on the one hand increases the contact surface of the individual teeth and on the other hand, the rotation and axis stability of the bone / implant interface is improved.
  • the embodiment of the implant (1) shown in FIG. 3 additionally has a fixation element (50) formed on the upper side (20) by a cylindrical attachment (51), which is located in a hole of another implant (5), for example a commercially available one Plate, can be picked up.
  • the implant (1) according to the invention can have fixation elements (50) of any shape for external or internal reception and stable fixation of other implants (5) of any shape, provided that the contact between the contact zones (11) on the underside (10) of the implant (FIG. 1) and the bone (3) do not affect.
  • fixation elements (50) can be formed by the outer shape of the implant (1) itself or by specially provided inner or outer mold elements (51) on the top (20) or one or more side surfaces (30), or in one or a plurality of through holes (40).

Landscapes

  • Health & Medical Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Neurology (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)
  • Prostheses (AREA)

Abstract

L'invention concerne un implant (1) pour l'ostéosynthèse, lequel est pressé au moyen d'un ou de plusieurs fils, câbles ou bandes sur l'os par encerclement et se lie à l'os sous la force de pressage dans les zones de contact (11) formées spécialement à cet effet sur le côté inférieur de l'implant de sorte qu'un déplacement de l'os par rapport à l'implant est empêché.
EP13727507.9A 2013-05-15 2013-05-15 Implant pour la stabilisation de fracture extracorticale Withdrawn EP2996593A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CH2013/000084 WO2014183223A1 (fr) 2013-05-15 2013-05-15 Implant pour la stabilisation de fracture extracorticale

Publications (1)

Publication Number Publication Date
EP2996593A1 true EP2996593A1 (fr) 2016-03-23

Family

ID=48577452

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13727507.9A Withdrawn EP2996593A1 (fr) 2013-05-15 2013-05-15 Implant pour la stabilisation de fracture extracorticale

Country Status (7)

Country Link
EP (1) EP2996593A1 (fr)
JP (1) JP2016517783A (fr)
CN (1) CN105228540A (fr)
AU (1) AU2013389955A1 (fr)
BR (1) BR112015028601A2 (fr)
CA (1) CA2911348A1 (fr)
WO (1) WO2014183223A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111529028A (zh) * 2020-04-28 2020-08-14 花奇凯 一种骨膜搬移器

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5190545A (en) * 1991-08-27 1993-03-02 Pfizer Hospital Products Group, Inc. Cerclage wire positioning insert
EP0599640B1 (fr) * 1992-11-25 1998-08-26 CODMAN & SHURTLEFF INC. Système de plaques pour ostéosynthèse
US5741259A (en) * 1996-02-22 1998-04-21 Chan; Kwan-Ho Surgical fastener device for use in bone fracture fixation
FR2846870B1 (fr) * 2002-11-07 2005-07-01 Fixano Materiel d'osteosynthese pour le traitement d'un cubitus"long"
GB0310860D0 (en) * 2003-05-12 2003-06-18 C H Medical Ltd Fixation of fractured bones
CA2569605C (fr) * 2004-06-07 2013-09-10 Synthes (U.S.A.) Implant orthopedique presentant des capteurs
GB2442189B (en) * 2005-07-13 2010-11-17 Acumed Llc Bone plates with movable locking elements
US7806911B2 (en) * 2006-04-14 2010-10-05 Warsaw Orthopedic, Inc. Fixation plate and method of use
US20080234753A1 (en) * 2007-03-19 2008-09-25 Warsaw Orthopedic, Inc. Spinal Stabilization Systems
US8343155B2 (en) * 2008-05-15 2013-01-01 Zimmer, Inc. Cable button
CN102475573A (zh) * 2010-11-22 2012-05-30 山东超瑞施生物磁学工程技术研究中心 一种骨科植入物锁定弹性接骨板
EP2667809B1 (fr) * 2011-01-25 2015-11-04 Synthes GmbH Implant expansible de fixation d'os

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2014183223A1 *

Also Published As

Publication number Publication date
BR112015028601A2 (pt) 2017-07-25
CA2911348A1 (fr) 2014-11-20
JP2016517783A (ja) 2016-06-20
CN105228540A (zh) 2016-01-06
AU2013389955A1 (en) 2015-12-03
WO2014183223A1 (fr) 2014-11-20

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