DE202015001700U1 - lumbar intervertebral cage leveraging the typical load distribution around the lumbar vertebral end plates - Google Patents

lumbar intervertebral cage leveraging the typical load distribution around the lumbar vertebral end plates Download PDF

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Publication number
DE202015001700U1
DE202015001700U1 DE202015001700.2U DE202015001700U DE202015001700U1 DE 202015001700 U1 DE202015001700 U1 DE 202015001700U1 DE 202015001700 U DE202015001700 U DE 202015001700U DE 202015001700 U1 DE202015001700 U1 DE 202015001700U1
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cage
shows
parts
end plates
lumbar
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Expired - Lifetime
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DE202015001700.2U
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German (de)
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    • 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
    • A61F2/4455—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages
    • A61F2/447—Joints for the spine, e.g. vertebrae, spinal discs for the fusion of spinal bodies, e.g. intervertebral fusion of adjacent spinal bodies, e.g. fusion cages substantially parallelepipedal, e.g. having a rectangular or trapezoidal 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
    • A61F2002/30001—Additional features of subject-matter classified in A61F2/28, A61F2/30 and subgroups thereof
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
    • A61F2002/30538—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation
    • 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
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30537—Special structural features of bone or joint prostheses not otherwise provided for adjustable
    • A61F2002/30538—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation
    • A61F2002/3054—Special structural features of bone or joint prostheses not otherwise provided for adjustable for adjusting angular orientation about a connection axis or implantation axis for selecting any one of a plurality of radial orientations between two modular parts, e.g. Morse taper connections, at discrete positions, angular positions or continuous positions
    • 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
    • A61F2002/30316—The prosthesis having different structural features at different locations within the same prosthesis; Connections between prosthetic parts; Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30535—Special structural features of bone or joint prostheses not otherwise provided for
    • A61F2002/30593—Special structural features of bone or joint prostheses not otherwise provided for hollow
    • 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
    • A61F2002/30621—Features concerning the anatomical functioning or articulation of the prosthetic joint
    • A61F2002/30624—Hinged joint, e.g. with transverse axle restricting the movement
    • 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
    • A61F2002/448—Joints for the spine, e.g. vertebrae, spinal discs comprising multiple adjacent spinal implants within the same intervertebral space or within the same vertebra, e.g. comprising two adjacent spinal implants

Abstract

Intervertrebraler Käfig zur Lordoseeinstellung unter Nutzung der Hebelkräfte des Bewegungssegmentes durch die typische Lastverteilung im Bereich der Wirbelkörperendplatten an der Lendenwirbelsäule. Der Käfig ist dadurch gekennzeichnet, dass er aus 2 beweglich miteinander verbundenen Teilen besteht, die über ein Gelenk frei wippen können. Abb 1 und Abb 2 zeigen die 2 Teile Abb 3 zeigt den verbundenen Zustand der 2 Teile, sowie die Wippbewegung.Intervertebral cage for lordosis adjustment using the leverage of the movement segment by the typical load distribution in the area of the vertebral end plates on the lumbar spine. The cage is characterized in that it consists of 2 movably interconnected parts which can freely rock via a joint. Fig 1 and Fig 2 show the 2 parts Fig 3 shows the connected state of the 2 parts, as well as the rocking motion.

Description

Das Produkt dient der konstanten Abstandshaltung zweier Wirbelkörper mit dem Ziel der Ausbildung einer stabilen knöchernen Verbindung im Verlauf (Fusion).The product is used to maintain a constant distance between two vertebral bodies with the aim of forming a stable bony connection in the course of (fusion).

Es besteht aus zwei beweglich miteinander verbundenen Platten, die um einen Drehpunkt am Übergang zwischen dem vorderen und mittleren Drittel des Produktes kippen.It consists of two movably interconnected plates which tilt around a pivot at the transition between the front and middle thirds of the product.

Je nach Kombination unterschiedlicher Plattengeometrien lassen sich so beliebige Winkelgrade zwischen oberer und unterer Kontaktfläche mit den Wirbelkörperendplatten erzeugen.Depending on the combination of different plate geometries, it is thus possible to produce arbitrary degrees of angle between the upper and lower contact surfaces with the vertebral end plates.

Das völlig Neue an diesem Produkt ergibt sich aus diesen frei wählbaren Winkelungen in Verbindung mit einer sehr flachen Kontur des vorderen Anteils bei Einbringung in den Zwischenwirbelraum die durch den Kippmechanismus des Produktes entsteht. Dadurch wird auch bei schlussendlich sehr hohen Implantaten oder großen Lordosewinkeln die Verletzungsgefahr der knöchernen Endplatten minimiert. Folglich wird die Gefahr des Einsinterns des Implantates in die angrenzenden Wirbelkörper minimiert.The completely new feature of this product results from these freely selectable angulations in connection with a very flat contour of the front portion when introduced into the intervertebral space created by the tilting mechanism of the product. As a result, even with very high implants or large lordosis angles, the risk of injury to the bony end plates is minimized. Consequently, the risk of sintering the implant into the adjacent vertebral bodies is minimized.

Geringere Einsinterung vermeidet einen Korrekturverlust und verbessert dadurch das klinische Ergebnis.Lower Einsinterung avoids a correction loss and thereby improves the clinical outcome.

Claims (5)

Intervertrebraler Käfig zur Lordoseeinstellung unter Nutzung der Hebelkräfte des Bewegungssegmentes durch die typische Lastverteilung im Bereich der Wirbelkörperendplatten an der Lendenwirbelsäule. Der Käfig ist dadurch gekennzeichnet, dass er aus 2 beweglich miteinander verbundenen Teilen besteht, die über ein Gelenk frei wippen können. Abb 1 und Abb 2 zeigen die 2 Teile Abb 3 zeigt den verbundenen Zustand der 2 Teile, sowie die Wippbewegung.Intervertebral cage for lordosis adjustment using the leverage of the movement segment by the typical load distribution in the area of the vertebral end plates on the lumbar spine. The cage is characterized in that it consists of 2 movably interconnected parts which can freely rock via a joint. Fig 1 and Fig 2 show the 2 parts Fig 3 shows the connected state of the 2 parts, as well as the rocking motion. Der Wippmechanismus bedient sich des Hebelgesetzes, da der Drehpunkt der Wippe so platziert ist, dass sich der Käfig sehr grund- und deckplattenschonend in den Intervertebralraum einbringen lässt.The rocking mechanism makes use of the law of levers, as the pivot point of the rocker is placed in such a way that the cage can be inserted into the intervertebral space in a very ground and cover-friendly way. Die Platzierung des Wippmechanismus erlaubt die automatische Lordoseeinstellung im betroffenen Wirbelsegment. Abb 3 zeigt den WippmechanismusThe placement of the rocking mechanism allows automatic lordosis adjustment in the affected vertebral segment. Fig. 3 shows the rocking mechanism Der Käfig ist nach Implantation ventral und dorsal geöffnet um ihn mit Fusionsmaterial exakt befüllen zu können. Abb 3 (re) zeigt die dorsale Öffnung Abb 3 (li) zeigt den geschlossenen und geöffneten ZustandThe cage is ventrally and dorsally opened after implantation in order to be able to fill it exactly with fusion material. Fig. 3 (right) shows the dorsal opening Fig. 3 (left) shows the closed and opened state Der Käfig kann aus Peek, Titan, 3-D-gedrucktem Titanstaub oder anderen geeigneten Materialien gefertigt werden.The cage can be made of peek, titanium, 3-D printed titanium dust or other suitable materials.
DE202015001700.2U 2015-03-04 2015-03-04 lumbar intervertebral cage leveraging the typical load distribution around the lumbar vertebral end plates Expired - Lifetime DE202015001700U1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE202015001700.2U DE202015001700U1 (en) 2015-03-04 2015-03-04 lumbar intervertebral cage leveraging the typical load distribution around the lumbar vertebral end plates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE202015001700.2U DE202015001700U1 (en) 2015-03-04 2015-03-04 lumbar intervertebral cage leveraging the typical load distribution around the lumbar vertebral end plates

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DE202015001700U1 true DE202015001700U1 (en) 2015-08-04

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017168304A1 (en) * 2016-03-30 2017-10-05 Medicrea International Method for making an implant, notably a vertebral or intervertebral implant, and implant obtained by this method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017168304A1 (en) * 2016-03-30 2017-10-05 Medicrea International Method for making an implant, notably a vertebral or intervertebral implant, and implant obtained by this method
FR3049453A1 (en) * 2016-03-30 2017-10-06 Medicrea Int METHOD FOR MANUFACTURING AN IMPLANT, IN PARTICULAR VERTEBRAL OR INTERVERTEBRAL, AND IMPLANT OBTAINED BY THIS METHOD
JP2019509834A (en) * 2016-03-30 2019-04-11 メディクレア インターナショナル Implants, in particular methods for producing vertebrae or intervertebral implants, and implants obtained by such a method
US10806597B2 (en) 2016-03-30 2020-10-20 Medicrea International Method for making an implant, notably a vertebral or intervertebral implant, and implant obtained by this method

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R086 Non-binding declaration of licensing interest
R087 Non-binding licensing interest withdrawn
R207 Utility model specification
R156 Lapse of ip right after 3 years