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EP1596739A1 - Vis t lescopique dynamique pour piphyse - Google Patents

Vis t lescopique dynamique pour piphyse

Info

Publication number
EP1596739A1
EP1596739A1 EP04709613A EP04709613A EP1596739A1 EP 1596739 A1 EP1596739 A1 EP 1596739A1 EP 04709613 A EP04709613 A EP 04709613A EP 04709613 A EP04709613 A EP 04709613A EP 1596739 A1 EP1596739 A1 EP 1596739A1
Authority
EP
European Patent Office
Prior art keywords
sleeve
stud
recess
present
epiphysial
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Withdrawn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
EP04709613A
Other languages
German (de)
English (en)
Inventor
Christoph Bertram
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.)
Universitaet zu Koeln
Original Assignee
Cell Center Cologne GmbH
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 Cell Center Cologne GmbH filed Critical Cell Center Cologne GmbH
Publication of EP1596739A1 publication Critical patent/EP1596739A1/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Withdrawn legal-status Critical Current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
    • A61B17/74—Devices for the head or neck or trochanter of the femur
    • 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
    • A61B17/8625—Shanks, i.e. parts contacting bone tissue
    • A61B17/863—Shanks, i.e. parts contacting bone tissue with thread interrupted or changing its form along shank, other than constant taper
    • 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
    • A61B17/8685—Pins or screws or threaded wires; nuts therefor comprising multiple separate parts

Definitions

  • the present invention relates to a device for bridging an epiphysial disk comprising a sleeve having a first end and a second end, a stud which is longitudinally movable within the sleeve, wherein the stud has a first end and a second end, wherein the first end of the sleeve comprises a fixing device and a recess, wherein by means of the recess a torque is transmittable to the sleeve, and wherein the first end of the stud comprises a recess, so that a torque is transmittable to the stud, wherein the second end of the stud protrudes from the sleeve at the second end of the sleeve, and the second end of the stud comprises a fixing device. Furthermore, the invention relates to sleeves and studs of a device according to the present invention as well as to surgical instruments which comprise a device, a sleeve and/or stud according to the present invention.
  • the epiphyseolysis capitis femoris juvenilis which is a disease pattern of adolescent persons, is a "softening" of the epiphysial disk (growth zone) which etiologically has not yet been completely understood, wherein the epiphysial disk is a still chondric (not yet bony adhered) tissue disk of adolescent persons, which joins the epiphysis, the calotte-shaped head, with the metaphysis, the femoral neck, of the thigh bone.
  • Steinmann's thinner bone nails triflanged nails, which are considered as being outdated for the present purpose
  • bone screws having different thicknesses, which are provided at their head with a cancellous bone thread having a length in the region of 16 to 32 mm and which are provided at their lower end with a screw head. They may be provided with a central hole in order to place the screws exactly by means of guide wires.
  • Such a device for fixing the femoral epiphysis against dislocation due to softening of the epiphysial disk is disclosed, for example, in DE 42 42 866 CI.
  • the object of the present invention is achieved by providing a device for bridging an epiphysial disk comprising a sleeve having a first end and a second end, a stud longitudinally movable in the sleeve, wherein the stud has a first end and a second end, wherein the first end of the sleeve comprises a fixing device and a recess wherein by means of the recess a torque is transmittable to the sleeve, and wherein the first end of the stud comprises a recess, wherein by means of said recess a torque is transmittable to the stud, wherein the second end of the stud protrudes from the sleeve at the second end of the sleeve, and the second end of the stud comprises a fixing device.
  • Figure 1 is a longitudinal cross-section of the device in accordance with the present invention
  • Figur 2a and Figure 2b are two lateral cross-sections of the device in accordance with the present invention.
  • the device according to the present invention is preferably a screw (see Fig. 1), which is used in osteosurgery at a growing skeleton (i.e. with children or adolescent persons) when an epiphysial disk has to be bridged.
  • the device or screw is preferably comprised of two parts: the first part (stud or screw (5)) preferably consists of a metallic cylinder with a thread (6) at a second end of the stud, wherein the thread has a short length and the thread has a larger diameter than the cylinder, and the thread is an external thread.
  • the second part usually consists of a tube having an inner diameter, which is preferably only slightly larger than outer diameter of the first part, i.e. the stud, having the consequence that the stud is movable or slideable in longitudinal direction of the sleeve.
  • an external thread (4) having a short length is provided for fixing the first end of the tube with a corresponding bone.
  • the first end of the tube is provided with a screw head having a recess (2) for receiving an Allen key.
  • the stud is provided with a central small hole (3) for passing e.g. a thin metallic wire, which may serve as a guide wire.
  • a typical indication for application of the device according to the present invention is e.g. epiphysiolysis capitis femoris (femoral head slipping), which is characterized by a slipping of the femoral head on the femoral neck.
  • this disease is treated either with so-called Kirschner's wires or with a common screw for osteosynthesis application, which projects about 1.5 cm from the bone into the soft parts.
  • Kirschner's wires also allow a growth they have to be exchanged in 50 % of patients concerned, namely when the corresponding screw head "touches" with the associated bone.
  • the treatment with Kirschner's wires does not allow a permanent fixation since the wires become slack and may loose off the bone.
  • An essential advantage of the device according to the present invention is that no exchange of a screw is necessary and no troubling projection of a screw into the soft parts occurs and nevertheless a safe fixation and anchorage without disturbance of bone growth is achieved.
  • a further advantage of the device according to the present invention is for instance that in contrast to the system described in the patent document DE 42 42 866 C2 the device according to the present invention is not only provided for fixing a slipped femoral head of an epiphysis but may be additionally used in case of epiphysial injuries of other epiphysial disks, such as epiphyseal fractures.
  • the device according to the present invention allows furthermore, due to its simple configuration without technically complex piston guide in "closed casing", an arbitrary combination of both parts, sleeve and stud, with each other and therefore allows in a simple manner sliding paths having different lengths at growing bones.
  • the device according to the present invention is provided at the sleeve with a thread as a fixing device thus a potential coming out of this sleeve into the soft parts is prevented.
  • Other devices as described e.g. in the patent document DE 42 42 866 C2, have no such fixing devices.
  • the piston guide as described in the patent document DE 42 42 866 C2 may inhibit further growth of the bridged epiphysial disk when reaching final position of the sliding path.
  • the device according to the present invention does deliberately not feature such an inhibition. A potential disadvantage of a dislocation of both components is less important with respect to medical reasons than an inhibition of growth of bones.
  • FIG. 1 schematically illustrate an embodiment of the device according to the present invention, namely in a longitudinal cross-section ( Figure 1) and in two essential lateral cross- sections (Figure 2a and Figure 2b).
  • Figure 1 a preferred embodiment of the device according to the present invention is illustrated, wherein the stud (5) and the sleeve (4) have the shape of a cylinder.
  • the fixing device of the movable stud (5) consists of a self tapping spongiosa thread (6) and that the fixing device at the first end of the sleeve (1) consists of a corticalis thread (4).
  • the recess (2) of the first end of the sleeve (1) and the recess (8) of the first end of the stud (5) which both allow a torque transmission are each preferably designed as a socket which is hexagonal-shaped or slot-shaped or Phillips-shaped or square-shaped, wherein a hexagonal- shaped socket is most preferred, see Figure 2a. It is further preferred that in the device according to the present invention the stud and/or the first end of the sleeve is provided with a hole (3), see Figure 1 and Figure 2b.
  • the first end of the sleeve (1) has a reduction (7) for preventing the stud (5) from passing through the first end of the sleeve (1).
  • Preferred materials for the device according to the present invention are medically appropriate materials such as steel alloys consisting of chromium, nickel, molybdenum, or especially the material titanium.
  • the screws may be comprised of e.g. a polymer such as poly-L-lactite and/or poly-L-glycolyte. This material is degraded in the course of approximately 12 months in the human body, thereby a growth inhibition may be prevented and thus a second surgery for removal of said material is not necessary.
  • the sleeve (1) should preferably have the following dimensions: inner diameter: corresponding to root of thread of the screw (5) outer diameter: approx. 1-4 mm larger than the inner diameter (corresponding to a wall thickness of 0.5-2 mm) thread (mm): 2.7 3.5 4.0 5.0 diameter of sleeve head (mm): 3.0 4.0 5.0 6.0 length of sleeve (1): ranging from 20 to 130 mm
  • a choice of the dimension may also be made for instance by means of a template at a standard anterior-posterior X-ray photography.
  • the present invention relates to sleeves and studs of the device according to the present invention described above and to its use for manufacturing of a device according to the present invention as well as to a surgical instrument comprising a device, sleeve and/or stud, especially screw, according to the present invention.

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)

Abstract

L'invention concerne un dispositif pour le pontage d'un disque d'épiphyse comportant un manchon (1) doté d'une première et d'une seconde extrémité, un goujon (5) mobile en longueur à l'intérieur de ce manchon et pourvu d'une première et d'une seconde extrémité. La première extrémité du manchon comporte un dispositif de fixation (4) et un évidement (2), lequel permet de transmettre un couple au manchon. La première extrémité du goujon est dotée d'un évidement (8) qui sert à transmettre un couple au goujon. La seconde extrémité du goujon sort hors du manchon à la seconde extrémité de celui-ci, et elle est pourvue d'un dispositif de fixation (6). La présente invention concerne en particulier des vis télescopiques particulièrement adaptées au traitement de l'épiphysiolyse de la tête du fémur.
EP04709613A 2003-02-10 2004-02-10 Vis t lescopique dynamique pour piphyse Withdrawn EP1596739A1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10305348 2003-02-10
DE2003105348 DE10305348A1 (de) 2003-02-10 2003-02-10 Dynamische epiphysäre Teleskopschraube
PCT/EP2004/001235 WO2004069065A1 (fr) 2003-02-10 2004-02-10 Vis télescopique dynamique pour épiphyse

Publications (1)

Publication Number Publication Date
EP1596739A1 true EP1596739A1 (fr) 2005-11-23

Family

ID=32747668

Family Applications (1)

Application Number Title Priority Date Filing Date
EP04709613A Withdrawn EP1596739A1 (fr) 2003-02-10 2004-02-10 Vis t lescopique dynamique pour piphyse

Country Status (3)

Country Link
EP (1) EP1596739A1 (fr)
DE (1) DE10305348A1 (fr)
WO (1) WO2004069065A1 (fr)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2701062C (fr) 2007-09-26 2016-08-23 Zimmer Gmbh Dispositif de fixation d'os en position pour le traitement operatoire de fractures
DE102012106336A1 (de) * 2012-07-13 2014-01-16 Aesculap Ag Knochenschraube und Knochenfixierungssystem
CN103654935A (zh) * 2012-09-06 2014-03-26 许家豪 具复位及加压功能的骨钉
US20140214034A1 (en) * 2013-01-25 2014-07-31 Fady Rayes Cannulated telescopic femoral neck screw device and related fixation method
FR3013581B1 (fr) * 2013-11-25 2016-10-21 Iceram Vis cephalique compressive destinee a la chirurgie orthopedique
CN105193489A (zh) * 2015-09-18 2015-12-30 山东康盛医疗器械有限公司 一种动态加压锁定接骨螺钉及其使用方法
RU188428U1 (ru) * 2018-09-25 2019-04-11 Общество С Ограниченной Ответственностью "Сахил" Винт для остеосинтеза шейки бедренной кости
US20230310034A1 (en) * 2020-09-04 2023-10-05 Pega Medical Inc. System and Method for Altering Growth of Bones

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2698261B1 (fr) * 1992-11-24 1995-03-17 Lacaffiniere Jean Yves De Dispositif de guidage d'une double vis du col du fémur pour clou trochantéro-diaphysaire verrouillé.
DE4242866C2 (de) * 1992-12-18 2002-03-07 Dietmar A Kumm Einrichtung zum Fixieren der Femurepiphyse gegen Dislokationen infolge des Erweichens der Epipysenfuge
JPH08322848A (ja) * 1995-06-01 1996-12-10 Masato Narushima 骨折部固定用スクリュー装置
DE19829228C1 (de) * 1998-06-30 1999-10-28 Aesculap Ag & Co Kg Vorrichtung zur Versorgung von Knochenbrüchen
DE19852945B4 (de) * 1998-11-17 2006-01-05 Leibinger, Georg Knochennagel für die intramedulläre Kompressionsnagelung von Femurfrakturen
DE29908360U1 (de) * 1999-05-11 2000-09-21 Hehl, Gerhard, Dr.med., 89079 Ulm Gleitschraube zur operativen Versorgung von z.B. Schenkelhalsbrüchen
JP4336023B2 (ja) * 1999-05-12 2009-09-30 浩平 窪田 インプラントスクリュー
JP2002360599A (ja) * 2001-06-05 2002-12-17 Ikushi Yamada 逸脱予防機能を備えた骨接合用螺子
DE10129490A1 (de) * 2001-06-21 2003-01-02 Helmut Mueckter Implantierbare Schraube zur Stabilisierung einer Gelenkverbindung oder eines Knochenbruches

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004069065A1 *

Also Published As

Publication number Publication date
DE10305348A1 (de) 2004-08-26
WO2004069065A1 (fr) 2004-08-19

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