FR2718947A1 - Nail and plate fixing for fractured upper end of femur - Google Patents

Nail and plate fixing for fractured upper end of femur Download PDF

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Publication number
FR2718947A1
FR2718947A1 FR9404779A FR9404779A FR2718947A1 FR 2718947 A1 FR2718947 A1 FR 2718947A1 FR 9404779 A FR9404779 A FR 9404779A FR 9404779 A FR9404779 A FR 9404779A FR 2718947 A1 FR2718947 A1 FR 2718947A1
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France
Prior art keywords
nail
femur
screw
locking
channel
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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Withdrawn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
FR9404779A
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French (fr)
Inventor
De La Caffiniere Jean-Yves
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CAFFINIERE DE JEAN YVES
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CAFFINIERE DE JEAN YVES
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Priority to FR9404779A priority Critical patent/FR2718947A1/en
Publication of FR2718947A1 publication Critical patent/FR2718947A1/en
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1725—Guides or aligning means for drills, mills, pins or wires for applying transverse screws or pins through intramedullary nails or pins
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/17—Guides or aligning means for drills, mills, pins or wires
    • A61B17/1739—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body
    • A61B17/1742—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the hip
    • A61B17/175—Guides or aligning means for drills, mills, pins or wires specially adapted for particular parts of the body for the hip for preparing the femur for hip prosthesis insertion
    • 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
    • A61B17/742—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck
    • A61B17/746—Devices for the head or neck or trochanter of the femur having one or more longitudinal elements oriented along or parallel to the axis of the neck the longitudinal elements coupled to a plate opposite the femoral head

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  • Health & Medical Sciences (AREA)
  • Surgery (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Veterinary Medicine (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)
  • Dentistry (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Neurology (AREA)
  • Surgical Instruments (AREA)

Abstract

The fixing consists of a nail (A) which passes through the bone fragments of the neck and greater trochanter of the femur and is attached to a plate fastened to the femur's outer surface. The nail has a transverse hole (1) for a fixing screw (11) and a threaded hole (9) in its end connected to the plate to receive a retaining screw (7) for a right-angled guide bracket (D) used to locate the entry point for the transverse fixing screw.The upper portion of the bracket has a lengthwise slot (10) for a hollow guide dowel (11), the inner diameter of which is sufficient to receive the fixing screw.

Description

CLOU-PLAQUE VERROUILLE POUR LES FRACTURES COMMINUTIVES
PERTROCHANTERIENNES DE L'EXTREMITE SUPERIEURE DU FEMUR
Le dispositif présenté vise à améliorer la fixation des fractures instables à foyer comminutif de la région trochantérienne du fémur par clou-plaque (I) (figure 1). Ces types de fractures sont devenus aujourd'hui plus fréquents du fait du nombre croissant des personnes très âgées avec os fragile. Le clou-plaque est un dispositif rigide dont l'extrémité proximale du clou (A) risque de perforer la tête fémorale, puis de traverser l'articulation de la hanche. Cette complication survient parce que la partie plaque (B) du clou-plaque (I) est fixée sur la diaphyse fémorale par des vis. II n'y a donc aucune possibilité pour que le clou soit chassé vers l'extérieur du fémur lorsque le foyer de fracture s'impacte. Pour pallier à cette complication, la présente invention consiste à verrouiller le clou selon le mode de l'enchevillement par une vis (II) qui traverse perpendiculairement le col du fémur et le clou (A).LOCK PLATE FOR COMMINUTIVE FRACTURES
PERTROCHANTERIANS OF THE SUPERIOR END OF THE FEMUR
The device presented aims to improve the fixation of unstable comminuted fractures of the trochanteric region of the femur by nail plate (I) (Figure 1). These types of fractures have become more frequent today due to the growing number of very elderly people with fragile bones. The nail-plate is a rigid device whose proximal end of the nail (A) risks puncturing the femoral head, then crossing the hip joint. This complication occurs because the plate part (B) of the nail plate (I) is fixed to the femoral shaft by screws. There is therefore no possibility for the nail to be driven out of the femur when the fracture site is impacted. To overcome this complication, the present invention consists in locking the nail according to the mode of entanglement by a screw (II) which crosses perpendicularly the neck of the femur and the nail (A).

Le dispositif de base est donc un canal (1) aménagé dans la partie centrale du clou (A) d'un clou-plaque usuel (I) et dont l'axe est perpendiculaire à ce clou. Ce canal (1) (figure 2) présente un orifice d'entrée supérieur (2) évasé. La canal (1) est perpendiculaire au canal axial (3) du clou qui sert au passage de la brocheguide de mise en place de celuici. The basic device is therefore a channel (1) arranged in the central part of the nail (A) of a usual nail-plate (I) and whose axis is perpendicular to this nail. This channel (1) (Figure 2) has a flared upper inlet port (2). The channel (1) is perpendicular to the axial channel (3) of the nail which is used for the passage of the guide pin for positioning it.

La vis de verrouillage (11) utilisée est introduite par l'orifice supérieur (2). Elle présente uniquement un filetage distal (4) afin que le segment (5), situé à l'intérieur du canal, offre le maximum de résistance aux contraintes diverses dont elle sera le siège. The locking screw (11) used is introduced through the upper hole (2). It only has a distal thread (4) so that the segment (5), located inside the channel, offers the maximum resistance to various constraints of which it will be the seat.

La vis de verrouillage (II) est introduite en bonne place grâce à un viseur spécial (III) placé au dessus du col du fémur après la mise en place du clou-plaque (1) (figure 3).The locking screw (II) is introduced in a good place thanks to a special sight (III) placed above the neck of the femur after the insertion of the nail-plate (1) (Figure 3).

Ce viseur est une pièce coudée dont l'extrémité (6) est fixée provisoirement sur la base du clou-plaque grâce à une vis (7) introduite dans un canal (8) placé en facé du logement (9) réservé au porte-clou-plaque lors de l'introduction de celuici ' dans
I'extrémité inférieure du fémur. Le viseur coudé (III) dispose de deux branches : une branche ascendante (C) perpendiculaire à I'axe du clou et l'autre branche (D) parallèle au clou. La branche (D) est une barre suffisamment épaisse pour disposer d'une fente (10) O) dans laquelle est fixé un tube cylindrique (11) qui peut se déplacer longitudinalement (10). Le diamètre intérieur de ce tube cylindrique (i i) est prévu pour admettre une douille de visée (12). Cette douille (12) est canulée, elle sert de guide à une mèche pour préparer le trajet de la vis (II) à travers le col du fémur et verrouiller le clou. Le site choisi pour viser le bon trajet dans le canal (1) est indiqué par une règle graduée (13) située le long de la fente (10) ou se déplace longitudinalement, le cylindre de guidage (11).This viewfinder is a bent piece whose end (6) is provisionally fixed on the base of the nail plate by means of a screw (7) inserted in a channel (8) placed in front of the housing (9) reserved for the nail holder -plate during the introduction of this' in
The lower end of the femur. The angled viewfinder (III) has two branches: an ascending branch (C) perpendicular to the axis of the nail and the other branch (D) parallel to the nail. The branch (D) is a bar thick enough to have a slot (10) O) in which is fixed a cylindrical tube (11) which can move longitudinally (10). The internal diameter of this cylindrical tube (ii) is designed to admit a sight socket (12). This sleeve (12) is cannulated, it serves as a guide for a drill bit to prepare the path of the screw (II) through the neck of the femur and lock the nail. The site chosen to target the correct path in the channel (1) is indicated by a graduated rule (13) located along the slot (10) or moves longitudinally, the guide cylinder (11).

Une fois le forage réalisé à travers le col du fémur (figure 4), la douille (12) est retirée et la vis de verrouillage (2) peut être placée en utilisant le même trajet grâce au tube de guidage (11) laissé à sa place et dont le diamètre intérieur est aussi ajusté pour guider la tête de vis (II).  Once the drilling has been carried out through the neck of the femur (Figure 4), the sleeve (12) is removed and the locking screw (2) can be placed using the same path thanks to the guide tube (11) left at its place and whose internal diameter is also adjusted to guide the screw head (II).

Claims (5)

REVENDICATIONS 1) Dispositif de verrouillage d'un clou-plaque (I) dans l'extrémité supérieure du fémur caractérisé par le fat qu'il consiste en une vis (II) qui traverse un canal (1) réalisé dans la partie moyenne du clou (A), perpendiculairement à sa direction. 1) Device for locking a nail plate (I) in the upper end of the femur, characterized by the fact that it consists of a screw (II) which crosses a channel (1) produced in the middle part of the nail ( A), perpendicular to its direction. 2) Dispositif selon la revendication 1 caractérisé en ce que le canal (1), qui traverse le clou (A) à sa partie moyenne, présente un orifice d'entrée évasé (2) afin de faciliter l'entrée de la pointe de vis lors de son introduction.2) Device according to claim 1 characterized in that the channel (1), which passes through the nail (A) at its middle part, has a flared inlet orifice (2) in order to facilitate the entry of the screw tip during its introduction. 3) Dispositif pour la mise en place du dispositif de verrouillage selon les revendications 1 ou 2 caractérisé en ce qu'il comprend un viseur coudé (III) qui se fixe par une vis (7) dans le logement d'entrée (9) du clou, de telle sorte que le dispositif de guidage est placé au dessus du col du fémur lorsque le clou-plaque (I) a été préalablement fixé dans l'extrémité supérieure du fémur.3) Device for the establishment of the locking device according to claims 1 or 2 characterized in that it comprises an angled viewfinder (III) which is fixed by a screw (7) in the inlet housing (9) of the nail, so that the guide device is placed above the neck of the femur when the nail plate (I) has been previously fixed in the upper end of the femur. 4) Dispositif selon la revendication 3 caractérisé en ce que la branche horizontale (D) du viseur, située au dessus du clou et parallèlement à lui, peut se présenter avec une large fente (10) dans laquelle se déplace longitudinalement une douille creuse (11), dont le diamètre intérieur admet une douille pleine (12), canulée, qui reçoit une mèche pour préparer le passage de la vis de verrouillage du clou (II). 4) Device according to claim 3 characterized in that the horizontal branch (D) of the viewfinder, located above the nail and parallel to it, can be provided with a large slot (10) in which a hollow socket (11) moves longitudinally ), the internal diameter of which admits a solid, cannulated socket (12) which receives a drill bit to prepare the passage of the nail locking screw (II). 5) Dispositif selon les revendications Q et 4 caractérisé en ce que le bord de la fente (10), dans laquelle se déplace le cylindre (11) de visée, présente une règle de mesure (13) pour choisir au mieux le point de passage de la vis (II) à travers le canal de verrouillage (1), dont l'emplacement est fonction de la longueur du clou choisi. 5) Device according to claims Q and 4 characterized in that the edge of the slot (10), in which the sighting cylinder (11) moves, has a measuring rule (13) to best choose the crossing point of the screw (II) through the locking channel (1), the location of which depends on the length of the chosen nail.
FR9404779A 1994-04-21 1994-04-21 Nail and plate fixing for fractured upper end of femur Withdrawn FR2718947A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9404779A FR2718947A1 (en) 1994-04-21 1994-04-21 Nail and plate fixing for fractured upper end of femur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9404779A FR2718947A1 (en) 1994-04-21 1994-04-21 Nail and plate fixing for fractured upper end of femur

Publications (1)

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FR2718947A1 true FR2718947A1 (en) 1995-10-27

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FR (1) FR2718947A1 (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2748649A1 (en) * 1996-05-17 1997-11-21 Caffiniere Jean Yves De Osteosynthesis nail for head of femur
EP0919200A1 (en) * 1997-11-20 1999-06-02 VM Tech System for osteosynthesis of the upper extremity of the femur
WO2001091648A1 (en) * 2000-05-26 2001-12-06 Waldemar Link (Gmbh & Co.) Drilling targeting device for introducing a hip cup
EP1994903A1 (en) * 2007-05-22 2008-11-26 Groupe Lepine Osteosynthesis material of the screw-plate type
JP2010193954A (en) * 2009-02-23 2010-09-09 Akira Honjo Broken bone fixture

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1493247A (en) * 1965-09-17 1967-08-25 Nat Res Dev implanted items used in hip surgery to reduce and fix fractures
FR2483214A1 (en) * 1980-05-30 1981-12-04 Tornier Sa Ets Implant for osteosynthesis of femoral head - has diaphysial plate extended above inclined blade to accommodate screws passing through blade
DE3722852A1 (en) * 1987-07-10 1989-01-19 Kernforschungsz Karlsruhe Implant for the treatment of bone fractures
FR2684870A1 (en) * 1991-12-12 1993-06-18 France Bloc Method for determining the entry point of a femoral intramedullary rod and device for visualising the entry point

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1493247A (en) * 1965-09-17 1967-08-25 Nat Res Dev implanted items used in hip surgery to reduce and fix fractures
FR2483214A1 (en) * 1980-05-30 1981-12-04 Tornier Sa Ets Implant for osteosynthesis of femoral head - has diaphysial plate extended above inclined blade to accommodate screws passing through blade
DE3722852A1 (en) * 1987-07-10 1989-01-19 Kernforschungsz Karlsruhe Implant for the treatment of bone fractures
FR2684870A1 (en) * 1991-12-12 1993-06-18 France Bloc Method for determining the entry point of a femoral intramedullary rod and device for visualising the entry point

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2748649A1 (en) * 1996-05-17 1997-11-21 Caffiniere Jean Yves De Osteosynthesis nail for head of femur
EP0919200A1 (en) * 1997-11-20 1999-06-02 VM Tech System for osteosynthesis of the upper extremity of the femur
WO2001091648A1 (en) * 2000-05-26 2001-12-06 Waldemar Link (Gmbh & Co.) Drilling targeting device for introducing a hip cup
EP1994903A1 (en) * 2007-05-22 2008-11-26 Groupe Lepine Osteosynthesis material of the screw-plate type
FR2916338A1 (en) * 2007-05-22 2008-11-28 Groupe Lepine Sarl OSTEOSYNTHESIS EQUIPMENT OF THE "SCREW-PLATE" TYPE.
JP2010193954A (en) * 2009-02-23 2010-09-09 Akira Honjo Broken bone fixture

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