DE3113142A1 - Implant for the stable inner immobilization of the spine - Google Patents

Implant for the stable inner immobilization of the spine

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Publication number
DE3113142A1
DE3113142A1 DE19813113142 DE3113142A DE3113142A1 DE 3113142 A1 DE3113142 A1 DE 3113142A1 DE 19813113142 DE19813113142 DE 19813113142 DE 3113142 A DE3113142 A DE 3113142A DE 3113142 A1 DE3113142 A1 DE 3113142A1
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DE
Germany
Prior art keywords
implant
legs
plate
spine
wedge
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.)
Granted
Application number
DE19813113142
Other languages
German (de)
Other versions
DE3113142C2 (en
Inventor
geb. Ledwon Lucja Prof. Dr.hab.Ing.-Mech. Gliwice Cieslak
Janusz Daab
Jan Dr.-Ing.-Mech. Tarnowskie Gory Marciniak
Zbigniew Piekary Slaskie Mielnik
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.)
Politechnika Slaska im Wincentego Pstrowskiego
Original Assignee
Politechnika Slaska im Wincentego Pstrowskiego
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
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Application filed by Politechnika Slaska im Wincentego Pstrowskiego filed Critical Politechnika Slaska im Wincentego Pstrowskiego
Publication of DE3113142A1 publication Critical patent/DE3113142A1/en
Application granted granted Critical
Publication of DE3113142C2 publication Critical patent/DE3113142C2/en
Expired 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
    • A61B17/70—Spinal positioners or stabilisers ; Bone stabilisers comprising fluid filler in an implant
    • A61B17/7062—Devices acting on, attached to, or simulating the effect of, vertebral processes, vertebral facets or ribs ; Tools for such devices
    • 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
    • A61F2/30—Joints
    • A61F2/44—Joints for the spine, e.g. vertebrae, spinal discs
    • 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
    • A61F2/30—Joints
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30108—Shapes
    • A61F2002/3011—Cross-sections or two-dimensional shapes
    • A61F2002/30159—Concave polygonal shapes
    • A61F2002/30166—H-shaped or I-shaped
    • 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
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30772—Apertures or holes, e.g. of circular cross section
    • 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
    • A61F2/30—Joints
    • A61F2/30767—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
    • A61F2/30771—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves
    • A61F2002/30904—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth applied in original prostheses, e.g. holes or grooves serrated profile, i.e. saw-toothed
    • 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
    • A61F2230/00—Geometry of prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
    • A61F2230/0002—Two-dimensional shapes, e.g. cross-sections
    • A61F2230/0028—Shapes in the form of latin or greek characters
    • 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
    • A61F2310/00—Prostheses classified in A61F2/28 or A61F2/30 - A61F2/44 being constructed from or coated with a particular material
    • A61F2310/00005—The prosthesis being constructed from a particular material
    • A61F2310/00011—Metals or alloys
    • A61F2310/00017—Iron- or Fe-based alloys, e.g. stainless steel

Abstract

For the stable immobilization of the spine an implant is used in the form of a plate (1) of strip or sheet metal which has wedge-shaped cut-outs (2) on the two ends of the plate (1) which are arranged symmetrically towards the centre relative to the longitudinal axis and terminate in a rounding-off (5). The wedge-shaped cut-outs (2) form legs (3) having teeth (4) with rounded feet and sharp points offset by half a division on the inner side. The tooth points (4) are preferably arranged at an angle of 45 DEG along the legs (3) and are bevelled in the opposite direction on the opposite legs. On the outside, the plate is narrowed in its central part (6). The implant used in bone surgery is intended to grow together with the bone, so that an external cast is superfluous. <IMAGE>

Description

BESCHREIBUNG: DESCRIPTION:

Die Erfindung betrifft ein Implantat zur stabilen inneren Feststellung der Wirbelsäule, um eine Knochenverwachsung zu erzielen, so daß ein die Feststellung bewirkender Außengips beseitigt werden kann.The invention relates to an implant for stable internal locking the spine in order to achieve a bone fusion, so that a finding effecting external plaster can be eliminated.

Das erfindungsgemäße Implantat findet Anwendung in der Knochenchirurgie.The implant according to the invention is used in bone surgery.

Die bisher bekannten und anzuwendenden Behandlungsmethoden von Wirbelsäulenfrakturen bestehen in einer langdauernden Außenfeststellung mit Hilfe von Gipskorsetten, was zu Muskelstrophien und Dekubitalgeschwüren führt, welche eine Frührehabilitation unmöglich machen.The previously known and applicable treatment methods for spinal fractures consist in a long-term external determination with the help of plaster corsets, what leads to muscle strophy and decubitus ulcers, which requires early rehabilitation to make impossible.

Bekannt sind weiterhin Operationsmethoden, wie die innere Anastomose mittels Federn, die jedoch ebenfalls als Unterstützung die Außenfeststellung benötigt (Weiss M. Materialy XXII ZJazdu Naukowego Pol. Tow. Ortop. Traum. Poznan 1978, Seiten 217 - 221).Surgical methods such as the internal anastomosis are also known by means of springs, which, however, also require the external locking mechanism as support (Weiss M. Materialy XXII ZJazdu Naukowego Pol. Tow. Ortop. Traum. Poznan 1978, pp 217-221).

Eine innere Anastomose unter Verwendung von zwei Platten und auf Dornfortsätze aufgelegten Schrauben bietet große technische Schwierigkeiten und verlängert die Zeit des chirurgischen Eingriffs (Rogers W.A. Cord injury during reduction of thoracis and lumbar vertebral-body fracture and dislocatione. J. Bone and Joint Surg. 20:689, 1938).An internal anastomosis using two plates and on the spinous processes applied screws offers great technical difficulties and lengthens the Time of surgical intervention (Rogers W.A. Cord injury during reduction of thoracis and lumbar vertebral-body fracture and displacement. J. Bone and Joint Surg. 20: 689, 1938).

Der Erfindung liegt die Aufgabe zugrunde, die genannten Schwierigkeiten in der Therapie zu vermeiden und eine solche Implantatkonstruktion zu entwickeln, welche eine stabile innere Anastomose gewährleistet, die Dauer des chirurgischen Eingriffs verkürzt, die Außenfeststellungen beseitigt, eine schnelle Rehabilitation ermöglicht und Dekubitalgeschwürentstehung verhindert, welche die schwersten Komplikationen bei den Kranken bildet, die infolge des Einsatzes von Gipskorsetten gelähmt worden sind.The invention is based on the problem of the aforementioned difficulties to avoid in therapy and to develop such an implant design, which ensures a stable internal anastomosis, the duration of the surgical Shortened intervention, the external observations eliminated, a quick rehabilitation allows and decubitus ulcer formation prevents which the the most serious complications in the patient as a result of the use of Plaster of Paris corsets have been paralyzed.

Diese Aufgabe wird durch Bearbeitung eines in Form eines aus einem Band oder Blech ausgeführten Implantats erreicht.This task is accomplished by working one out of one Band or sheet metal executed implant reached.

Das aus Band oder Blech ausgeführte, im folgenden als Daab'-sche Platte bezeichnete erfindungsgemäße Implantat besitzt keilförmige Ausschnitte an den beiden Plattenenden, die von der Mitte aus symmetrisch zu der Längsachse angeordnet sind und in Abrundungen enden. Die keilförmigen Ausschnitte bilden Schenkel, die innenseitig Zähne mit abgerundeten Zahnfugen und scharfen Zahnspitzen haben, die um eine halbe Teilung versetzt sind. Die Zahnkanten sind vorzugsweise unter einem Winkel von 450 längs der Schenkel und umgekehrt an den gegenüberliegenden Schenkeln abgeschrägt. An der Außenseite im mittleren Teil ist die Platte verengt. In der Mitte des Implantats befindet sich eine Montagebohrung.The one made of strip or sheet metal, hereinafter referred to as Daab's plate designated implant according to the invention has wedge-shaped cutouts on the two Plate ends that are arranged symmetrically to the longitudinal axis from the center and end in rounds. The wedge-shaped cutouts form legs, the inside Teeth with rounded joints and sharp tooth tips that are around a half Pitch are offset. The tooth edges are preferably at a 450 angle beveled along the legs and vice versa on the opposite legs. On the outside in the middle part, the plate is narrowed. In the middle of the implant there is a mounting hole.

Das Implantat wird durch Verklemmen der Schenkel und Einschlagen der Zähne an der Grundfläche der Dornfortsätze befestigt. Die Schenkellänge des Implantats ist von der Art der festgestellten Bewegungssegmente abhängig. Die Schenkel können beliebig während des chirurgischen Eingriffs mittels eines entsprechenden Gerätes geformt werden. Der Werkstoff des Implantats soll eine entsprechende Korrosionsbeständigkeit haben, um insbesondere eine interkristalline Korrosion zu vermeiden.The implant is made by clamping the legs and hammering in the Teeth attached to the base of the spinous processes. The leg length of the implant depends on the type of motion segments detected. The thighs can at any time during the surgical procedure using an appropriate device be shaped. The material of the implant should have a corresponding corrosion resistance in particular to avoid intergranular corrosion.

Die Daab'sche Platte kann aus einer Legierung oder aus korrosionsbeständigen, durch Vakuummetallurgie gewonnenen, heiß- und kaltumgeformten zum Band oder Blech mit einer Stärke 3,0 t 0,1 mm geformten Metall hergestellt werden.The Daab plate can be made of an alloy or of corrosion-resistant, obtained by vacuum metallurgy, hot and cold formed into strips or sheets with a thickness of 3.0 to 0.1 mm formed metal.

Die Größe der Höhenabnahme und die Ausglühbedingungen sind so gewählt, daß die genannten mechanischen und physikalischchemischen Eigenschaften gewährleistet werden. Die Wärmebehandlung des Werkstoffs soll in einer Schutzatmosphäre oder im Vakuum durchgeführt werden. Das Implantat kann aus dem Blech oder Band durch spanabhebende Bearbeitung, Elektrofunkenbearbeitung oder durch Ausschneiden ausgeführt werden. Beim Ausschneiden wird die Platte polygoflisierend in einer Schutzatmosphäre ausgeglüht. Die Endbearbeitung der Platte besteht im elektrolytischen Polieren und in der Passivierung.The size of the decrease in height and the annealing conditions are chosen so that that the mentioned mechanical and physicochemical properties are guaranteed will. The heat treatment of the material should be in a protective atmosphere or in Vacuum can be carried out. The implant can go out the sheet metal or Band by machining, electrical spark machining or by cutting out are executed. When cutting, the board becomes polygolizing in a protective atmosphere annealed. The finishing of the plate consists of electrolytic polishing and in passivation.

Ein Vorteil des erfindungsgemäßen Implantats besteht darin, daß es innerlich 3 Je nach Bedarf die benachbartenBewegungssegmente feststellt. Die Implantatlänge ist von der Art der festzustellenden Bewegungssegmente abhängig und die Schenkel können beliebig während des chirurgischen Eingriffs mit Hilfe eines entsprechenden Gerätes geformt werden.An advantage of the implant according to the invention is that it internally 3 Determines the neighboring movement segments as required. The implant length depends on the type of movement segments to be determined and the legs can be used at will during the surgical procedure with the help of an appropriate Device to be shaped.

Anhand der Zeichnung wird ein Ausführungsbeispiel der Erfindung näher erläutert. Es zeigt: Fig. 1 einen Querschnitt durch das Implantat und Fig. 2 die Längsabschrägung der Zahnspitzen des Implantats.An exemplary embodiment of the invention is explained in more detail with the aid of the drawing explained. It shows: FIG. 1 a cross section through the implant and FIG. 2 the Longitudinal bevel of the tooth tips of the implant.

Das erfindungsgemäße Implantat ist in Form einer Platte 1 aus einem 3 mm starken Blech ausgeführt. Die Platte 1 weist an ihren Enden keilförmige Ausschnitte 2 auf, die zur Mitte symmetrisch zu der Längsachse angeordnet und in einer Abrundung 5 enden. Die keilförmigen Ausschnitte 2 bilden Schenkel 3, die auf der Innenseite Zähne 4 mit abgerundeten Zahnfüßen und scharfen um eine halbe Teilung verschobenen Spitzen aufweisen. Die Spitzen der Zähne 4 sind unter einem Winkel von 450 längs der Schenkel 3 abgeschrägt und zwar an den gegenüberliegenden Schenkeln entgegengesetzt zueinander. Die Platte 1 ist an der Außenseite im mittleren Teil verengt und mit einer Montagebohrung versehen.The implant according to the invention is in the form of a plate 1 from a 3 mm thick sheet metal. The plate 1 has wedge-shaped cutouts at its ends 2, which are arranged symmetrically to the longitudinal axis towards the center and in a rounding 5 ends. The wedge-shaped cutouts 2 form legs 3 on the inside Teeth 4 with rounded tooth bases and sharp ones shifted by half a division Have tips. The tips of the teeth 4 are longitudinal at an angle of 450 the leg 3 beveled and that opposite on the opposite legs to each other. The plate 1 is narrowed on the outside in the middle part and with provided with a mounting hole.

Die Daab'sche Platte wird folgendermaßen ausgeführt: Die Platte wird aus niedriggekohltem Chrom-Nickel-Mangan-Molyt>dän-Stahl ausgeführt, mit einer Zugfestigkeit von mindestens 510 MPa, einer Ausdehnungsfestigkeit von mindestens 65 %, einer Dauerbiegefestigkeit von mindestens 250 MPa und hat eine austhenitische, nicht magnetische Struktur und eine Korngröße von weniger als 4. Klasse ASTM.Daab's plate is carried out as follows: The plate is made of low-carbon chromium-nickel-manganese-molyt> danish steel, with a Tensile strength of at least 510 MPa, an elongation strength of at least 65 %, a fatigue strength of at least 250 MPa and has an austenitic, non-magnetic structure and a grain size of less than 4th class ASTM.

Zur Erzeugung des Bandes wird die Vakuummetallurgie, Warmumformen und Kaltumformen sowie Ausglühen in einer Schutzatmosphäre oder im Vakuum angewandt. Die Bandstärke beträgt 3,0 + 0,1 mm. Das Implantat wird aus dem Band durch spanabhebende Bearbeitung erzeugt. Die Endbearbeitung des Implantats besteht im mechanischen Polieren, elektrolytischem Polieren und Passivierung.Vacuum metallurgy and hot forming are used to produce the strip and cold forming and annealing in a protective atmosphere or in a vacuum. The band thickness is 3.0 + 0.1 mm. The implant is removed from the band by machining Machining generated. The finishing of the implant consists of mechanical polishing, electrolytic polishing and passivation.

Aus einem 120 mm langen Band wird eine Platte mit Ausschnitten 2 an den beiden Seiten hergestellt, die eine Länge von 46 mm zur Mitte hin aufweisen, symmetrisch zu der Längsachse angeordnet sind und eine Konvergenz von 10 mm am Ende der Platte zu 6 mm in einer Entfernung von 40 mm haben, wobei die Ausschnitte 2 Enden mit einem Abrundungsradius von 12,5 mm haben, wodurch die Schenkel 3 des Implantats gebildet werden. An der inneren Schenkelseite werden Zähne 4 mit einer Teilung von 8 mm mit scharfen Spitzen und abgerundeten Füßen mit einem Radius von 2 mm angeschnitten.A plate with cutouts 2 is made from a 120 mm long tape made on the two sides, which are 46 mm long towards the middle, arranged symmetrically to the longitudinal axis and a convergence of 10 mm at the end of the plate to 6 mm at a distance of 40 mm, with the cutouts 2 Ends with a radius of curvature of 12.5 mm, creating the legs 3 of the implant are formed. On the inner side of the leg there are teeth 4 with a pitch of Cut 8 mm with sharp points and rounded feet with a radius of 2 mm.

Die auf den gegenüberliegenden Schenkeln liegenden Zahnspitzen sind um 4 mm versetzt. Die Spitzen sind unter einem Winkel von 450 längs der Schenkel abgeschrägt, und zwar auf den gegenüberliegenden Schenkeln entgegengesetzt, wodurch das Abschneiden der dornartigen Fortsätze während des Verklemmens der Schenkel während des Eingriffs vermieden wird.The tooth tips lying on the opposite legs are offset by 4 mm. The tips are at an angle of 450 along the legs beveled, on opposite sides of the opposite legs, whereby cutting off the thorn-like extensions during the jamming of the legs of the procedure is avoided.

In der Mitte des Implantats befindet sich eine Montagebohrung mit einem Durchmesser von 3 mm und an der Außenseite ist eine Verengung des Implantats mit einem Abrundungsradius von 50 mm ausgeführt.In the middle of the implant there is a mounting hole with a diameter of 3 mm and on the outside is a narrowing of the implant executed with a rounding radius of 50 mm.

Das erfindungsgemäße Implantat wird vor der Feststellung bei der Grundfläche der Dornfortsätze durch Erweiterung der Schenkel mittels eines beliebigen Gerätes vorbereitet.The implant according to the invention is prior to being fixed at the base the spinous processes by expanding the thighs using any device prepared.

L e e r s e i t eL e r s e i t e

Claims (1)

Implantat zur stabilen inneren Feststellung der Wirbelsäule PATENTANSPRUCH: ~~~~~~~~~~~~~~ Implantat zur stabilen inneren Feststellung der Wirbelsäule in Form einer Platte aus Band oder Blech, dadurch g e -k e n n z e i c h n e t , daß es an den beiden Enden der Platte (1) keilfömnige Ausschnitte (2) aufweist, die zur Mitte hin symmetrisch zu der Längsachse angeordnet sind und Jeweils in einer Abrundung (5) enden, wobei die keilförmigen Ausschnitte (2) Schenkel (3) bilden, die an der inneren Seite Zähne (4) mit abgerundeten Fdßen und scharfen um eine halbe Teilung verschobenen Spitzen aufweisen, die unter einem Winkel von 450 längs der Schenkel (3), umgekehrt auf den gegenüberliegenden Schenkeln abgeschrägt sind und die Platte (1) an der Außenseite im mittleren Teil (6) verengt ist. Implant for stable internal fixation of the spine PATENT CLAIM: ~~~~~~~~~~~~~~ Implant for stable internal fixation of the spine in shape a plate made of strip or sheet metal, marked by the fact that it at the two ends of the plate (1) has wedge-shaped cutouts (2), which for Are arranged symmetrically to the longitudinal axis towards the center and each in a rounding (5) end, wherein the wedge-shaped cutouts (2) form legs (3) that are attached to the inner side teeth (4) with rounded feet and sharp at half a division have displaced tips that are at an angle of 450 along the legs (3), reversed on the opposite legs are beveled and the plate (1) is narrowed on the outside in the middle part (6).
DE19813113142 1980-04-15 1981-04-01 Implant for stable internal fixation of the spine Expired DE3113142C2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL22351680A PL124738B1 (en) 1980-04-15 1980-04-15 Implant for internal spine stabilization

Publications (2)

Publication Number Publication Date
DE3113142A1 true DE3113142A1 (en) 1982-01-14
DE3113142C2 DE3113142C2 (en) 1985-05-30

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
DE19813113142 Expired DE3113142C2 (en) 1980-04-15 1981-04-01 Implant for stable internal fixation of the spine

Country Status (3)

Country Link
DE (1) DE3113142C2 (en)
FI (1) FI65366C (en)
PL (1) PL124738B1 (en)

Cited By (31)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2623085A1 (en) * 1987-11-16 1989-05-19 Breard Francis SURGICAL IMPLANT FOR LIMITING THE RELATIVE MOVEMENT OF VERTEBRATES
FR2722980A1 (en) * 1994-07-26 1996-02-02 Samani Jacques Spinal implant for securing adjacent pair of vertebrae
US5836948A (en) * 1997-01-02 1998-11-17 Saint Francis Medical Technologies, Llc Spine distraction implant and method
US5860977A (en) * 1997-01-02 1999-01-19 Saint Francis Medical Technologies, Llc Spine distraction implant and method
WO1999040866A1 (en) * 1998-02-10 1999-08-19 Dimso (Distribution Medicale Du Sud-Ouest) Interspinous stabiliser to be fixed to spinous processes of two vertebrae
US6048342A (en) * 1997-01-02 2000-04-11 St. Francis Medical Technologies, Inc. Spine distraction implant
US6068630A (en) * 1997-01-02 2000-05-30 St. Francis Medical Technologies, Inc. Spine distraction implant
US6152926A (en) * 1997-01-02 2000-11-28 St. Francis Medical Technologies, Inc. Spine distraction implant and method
US6451019B1 (en) 1998-10-20 2002-09-17 St. Francis Medical Technologies, Inc. Supplemental spine fixation device and method
US6626944B1 (en) 1998-02-20 2003-09-30 Jean Taylor Interspinous prosthesis
US6652527B2 (en) 1998-10-20 2003-11-25 St. Francis Medical Technologies, Inc. Supplemental spine fixation device and method
US6695842B2 (en) 1997-10-27 2004-02-24 St. Francis Medical Technologies, Inc. Interspinous process distraction system and method with positionable wing and method
US6712819B2 (en) 1998-10-20 2004-03-30 St. Francis Medical Technologies, Inc. Mating insertion instruments for spinal implants and methods of use
US6796983B1 (en) 1997-01-02 2004-09-28 St. Francis Medical Technologies, Inc. Spine distraction implant and method
US6899734B2 (en) 2001-03-23 2005-05-31 Howmedica Osteonics Corp. Modular implant for fusing adjacent bone structure
US7695513B2 (en) 2003-05-22 2010-04-13 Kyphon Sarl Distractible interspinous process implant and method of implantation
US7749252B2 (en) 2005-03-21 2010-07-06 Kyphon Sarl Interspinous process implant having deployable wing and method of implantation
US7763073B2 (en) 2004-03-09 2010-07-27 Depuy Spine, Inc. Posterior process dynamic spacer
US7763050B2 (en) 2004-12-13 2010-07-27 Warsaw Orthopedic, Inc. Inter-cervical facet implant with locking screw and method
US7776090B2 (en) 2004-12-13 2010-08-17 Warsaw Orthopedic, Inc. Inter-cervical facet implant and method
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US5860977A (en) * 1997-01-02 1999-01-19 Saint Francis Medical Technologies, Llc Spine distraction implant and method
US6152926A (en) * 1997-01-02 2000-11-28 St. Francis Medical Technologies, Inc. Spine distraction implant and method
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US7955356B2 (en) 1997-01-02 2011-06-07 Kyphon Sarl Laterally insertable interspinous process implant
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US7758619B2 (en) 1997-01-02 2010-07-20 Kyphon SÀRL Spinous process implant with tethers
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US6695842B2 (en) 1997-10-27 2004-02-24 St. Francis Medical Technologies, Inc. Interspinous process distraction system and method with positionable wing and method
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US6899734B2 (en) 2001-03-23 2005-05-31 Howmedica Osteonics Corp. Modular implant for fusing adjacent bone structure
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US7803190B2 (en) 2002-10-29 2010-09-28 Kyphon SÀRL Interspinous process apparatus and method with a selectably expandable spacer
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US7763073B2 (en) 2004-03-09 2010-07-27 Depuy Spine, Inc. Posterior process dynamic spacer
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FI65366C (en) 1984-05-10
FI811159L (en) 1981-10-16
DE3113142C2 (en) 1985-05-30
PL223516A1 (en) 1981-10-16
PL124738B1 (en) 1983-02-28
FI65366B (en) 1984-01-31

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