DE102009024844B4 - Stabilizing element and acetabular implant for hip arthroplasty - Google Patents
Stabilizing element and acetabular implant for hip arthroplasty Download PDFInfo
- Publication number
- DE102009024844B4 DE102009024844B4 DE102009024844A DE102009024844A DE102009024844B4 DE 102009024844 B4 DE102009024844 B4 DE 102009024844B4 DE 102009024844 A DE102009024844 A DE 102009024844A DE 102009024844 A DE102009024844 A DE 102009024844A DE 102009024844 B4 DE102009024844 B4 DE 102009024844B4
- Authority
- DE
- Germany
- Prior art keywords
- stabilizing element
- tab
- fastening
- pan
- bearing
- 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.)
- Expired - Fee Related
Links
Images
Classifications
-
- 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
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
-
- 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
- A61F2/30721—Accessories
-
- 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
- A61F2/30721—Accessories
- A61F2/30749—Fixation appliances for connecting prostheses to the body
-
- 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
- A61F2/30721—Accessories
- A61F2/30734—Modular inserts, sleeves or augments, e.g. placed on proximal part of stem for fixation purposes or wedges for bridging a bone defect
-
- 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
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30383—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements made by laterally inserting a protrusion, e.g. a rib into a complementarily-shaped groove
- A61F2002/30387—Dovetail connection
-
- 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
- A61F2002/30329—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
- A61F2002/30476—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism
- A61F2002/30507—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements locked by an additional locking mechanism using a threaded locking member, e.g. a locking screw or a set screw
-
- 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
- A61F2002/30576—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs
- A61F2002/30578—Special structural features of bone or joint prostheses not otherwise provided for with extending fixation tabs having apertures, e.g. for receiving fixation screws
-
- 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
- A61F2002/30667—Features concerning an interaction with the environment or a particular use of the prosthesis
- A61F2002/3069—Revision endoprostheses
-
- 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
- A61F2002/30784—Plurality of holes
- A61F2002/30787—Plurality of holes inclined obliquely with respect to each other
-
- 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
- A61F2002/3093—Special external or bone-contacting surface, e.g. coating for improving bone ingrowth for promoting ingrowth of bone tissue
-
- 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
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
- A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
-
- 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
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
- A61F2002/3401—Acetabular cups with radial apertures, e.g. radial bores for receiving fixation screws
- A61F2002/3403—Polar aperture
-
- 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
- A61F2/32—Joints for the hip
- A61F2/34—Acetabular cups
- A61F2002/3453—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped
- A61F2002/3454—Acetabular cups having a non-hemispherical convex outer surface, e.g. quadric-shaped having an oblong, oval or elliptical cross-section in the equatorial plane
-
- 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
- A61F2220/00—Fixations or connections for prostheses classified in groups A61F2/00 - A61F2/26 or A61F2/82 or A61F9/00 or A61F11/00 or subgroups thereof
- A61F2220/0025—Connections or couplings between prosthetic parts, e.g. between modular parts; Connecting elements
Landscapes
- Health & Medical Sciences (AREA)
- Orthopedic Medicine & Surgery (AREA)
- Cardiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Transplantation (AREA)
- Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Heart & Thoracic Surgery (AREA)
- Vascular Medicine (AREA)
- Life Sciences & Earth Sciences (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Prostheses (AREA)
Abstract
Stabilisierungselement für die Hüftgelenkendoprothetik, das an einem Laschenlager (13) eines Pfannengrundkörpers (1) eines Pfannenimplantats angebracht werden kann, wobei das Stabilisierungelement die Form einer Befestigungslasche (3) mit einem Anschlussbereich, der mindestens eine Befestigungsschraubenöffnung (16) aufweist, und mit einem Bereich mit Öffnungen (17) für Knochenschrauben aufweist, dadurch gekennzeichnet, dass an den beiden Seitenflächen des Anschlussbereichs keilförmige Zapfen (15b) angeordnet sind, die von der Stirnseite der Lasche (15a) beabstandet sind und zur Verbindung mit dem Laschenlager (13) des Pfannengrundkörpers (1) dienen, so dass sich Rotationsstabilität durch eine formschlüssige Blockmontage ergibt, und dass die mindestens eine Befestigungsschraubenöffnung (16) zwischen den beiden Zapfen (15b) angeordnet ist.Stabilizing element for hip joint arthroplasty, which can be attached to a bracket bearing (13) of a socket base body (1) of a socket implant, the stabilizing element being in the form of a fastening tab (3) with a connection region which has at least one fastening screw opening (16) and with one region with openings (17) for bone screws, characterized in that wedge-shaped pins (15b) are arranged on the two side surfaces of the connection area, which are spaced from the end face of the tab (15a) and for connection to the tab bearing (13) of the socket base body ( 1), so that rotational stability results from a positive block assembly, and that the at least one fastening screw opening (16) is arranged between the two pins (15b).
Description
Die Erfindung betrifft ein Stabilisierungselement für die Hüftgelenkendoprothetik, das an einem Laschenlager eines Pfannengrundkörpers des Pfannenimplantats angebracht werden kann, wobei das Stabilisierungselement die Form einer Befestigungslasche mit einem Anschlussbereich, der mindestens eine Befestigungsschraubenöffnung aufweist, und mit einem Bereich mit Öffnungen für Knochenschrauben aufweist. Die Erfindung betrifft ferner ein Pfannenimplantat für die Hüftgelenkendoprothetik, mit einem Pfannengrundkörper, der ein Laschenlager aufweist, und mit einem solchen Stabilisierungselement.The invention relates to a stabilizing element for total hip arthroplasty, which can be attached to a tab bearing of a cup base of the cup implant, wherein the stabilizing element has the form of a fastening tab with a connection area, which has at least one fastening screw opening, and with a region with openings for bone screws. The invention further relates to a acetabular implant for the hip joint endoprosthesis, with a pan body having a tab bearing, and with such a stabilizing element.
Stand der TechnikState of the art
Der Ersatz eines verschlissenen Hüftgelenks durch eine Endoprothese ist eine etablierte operative Therapie, die mit hoher Erfolgsrate für den Betroffenen neben der Schmerzlinderung eine weitgehende Wiederherstellung der Beweglichkeit des Gelenks gestattet.The replacement of a worn hip joint with an endoprosthesis is an established surgical therapy, which allows a high success rate for the affected person in addition to the pain relief, a substantial restoration of the mobility of the joint.
Ein vollständiger Hüftgelenksersatz umfasst den funktionellen Ersatz der Gelenkpfanne durch eine Pfannenprothese und den Ersatz des Femurkopfes, der Gelenkkugel, durch eine zweiteilige Kopfprothese bestehend aus einer keramischen Kugel, die auf einem metallischen, in den Femur einzutreibenden Haltestiel sitzt. Die Verbindung von Implantat zum Knochengewebe wird bevorzugt durch Verpressen (press-fit) hergestellt, da sofort ein Wachstumsreiz auf das angrenzende Knochengewebe wirkt und durch die folgende Verwachsung des Knochengewebes mit der Implantatoberfläche ein sicherer Halt des Implantats erfolgt.A complete hip replacement includes functional replacement of the socket by a socket prosthesis and replacement of the femoral head, the ball, by a two-piece head prosthesis consisting of a ceramic ball seated on a metallic support stem to be driven into the femur. The connection of the implant to the bone tissue is preferably produced by pressing (press-fit), since a growth stimulus acts immediately on the adjacent bone tissue and a secure hold of the implant takes place by the subsequent adhesion of the bone tissue to the implant surface.
Die Haltbarkeitsdauer derartiger Hüftgelenkendoprothesen beträgt bei derzeitigem Entwicklungsstand zirka fünfzehn Jahre. Die Revisionsrate dieser Endoprothesen liegt aus unterschiedlichen Gründen bei 10%. Die Lockerung der Pfannenprothese (Pfanne) ist einer der Hauptgründe für die Revision der Endoprothese und führt in der Regel zu Defekten des Implantatlagers, Diese Defekte weisen gewöhnlich eine ovaläre Form auf und werden nach Schweregrad klassifiziert. Aufgrund der ovalären Defektform und des unterschiedlichen Schweregrades der Defekte ist die Versorgung mit größeren Standardpfannen nicht angemessen und es wurden verschiedene Varianten von Revisionspfannen entwickelt.The shelf life of such hip joint endoprostheses at the current stage of development is about fifteen years. The revision rate of these endoprostheses is 10% for different reasons. The loosening of the acetabular cup (socket) is one of the main reasons for the revision of the endoprosthesis and usually leads to defects in the implant site. These defects usually have an oval shape and are classified according to severity. Due to the oval shape of the defect and the different severity of defects, the supply of larger standard pans is not adequate and different types of revision pans have been developed.
Diese Revisionspfannen sollten einerseits eine räumliche Defektfüllung zur Wiederherstellung des Kontaktes mit dem Knochengewebe gewährleisten, andererseits aber eine variable Anpassung an die Defektschwere, die sich oft erst intraoperativ erweist, gestatten. Diese Anforderungen werden durch die vorhandenen Revisionsimplantate unterschiedlich erfüllt, die sich in folgende Gruppen grob einteilen lassen:
- – Pfannen mit ovalärer Form,
- – Pfannen mit Lasche,
- – Pfannen mit Zapfen,
- – Pfannen mit Lasche und Zapfen,
- – Pfannen mit anderen Verankerungsmitteln.
- - pans of oval shape,
- - pans with flap,
- - pans with cones,
- - pans with lugs and cones,
- - pans with other anchoring means.
Vorgeformte Spezialimplantate, wie sie in
Auch in
In der Patent-Veröffentlichung
Derartige Stabilisierungselemente in den vorgenannten Veröffentlichungen sind entweder vor der Operation zu montieren oder nicht polyaxial einstellbar, da sie fest verankert sind.Such stabilizing elements in the aforementioned publications are either mounted prior to surgery or not polyaxially adjustable because they are firmly anchored.
Eine wesentliche Weiterentwicklung wird durch die Patentschrift
Dabei können verschieden lange Zapfen und verschieden geformte Laschen während der Operation ausgewählt werden. Die Lasche wird bei Bedarf im Operationssaal montiert, die polyaxial ausrichtbaren Zapfen können bei bereits verpresster Pfanne (press-fit) gesetzt und fixiert werden.In this case, different lengths of pins and different shaped tabs can be selected during the operation. If necessary, the flap can be mounted in the operating room, and the poly-axially orientable pins can be set and fixed in the already compressed pan (press-fit).
Diese Revisionspfanne erfüllt die Mehrzahl der gestellten Anforderungen, weist aber im Detail auch Unzulänglichkeiten auf, die sich durch die operativen Prioritäten ergeben.This revision pan meets most of the requirements, but also has in detail the shortcomings of operational priorities.
Die bevorzugte Verwendung des modularen Implantats erfolgt in folgender Rangfolge:
- (1) Ovaläre Pfanne, press-fit gesetzt
- (2) Ovaläre Pfanne, press-fit gesetzt, mit Lasche
- (3) Ovaläre Pfanne, press-fit gesetzt, mit Lasche und Stabilisierungszapfen
- (1) Oval pan, press-fit set
- (2) Oval pan, press-fit set, with tab
- (3) Oval pan, press-fit set, with tab and stabilization pin
Da die Qualität der Verpressung erst während des Vorgangs selbst offenbar wird, wird der Operateur bei eingeschätzt ausreichender Pressung auf alle Stabilisierungselemente verzichten wollen.Since the quality of the compression is only apparent during the process itself, the surgeon will want to dispense with estimated sufficient pressure on all stabilizing elements.
Im Zweifel setzt er zusätzliche Stabilisierungselemente ein und zwar in der Reihenfolge zuerst die Lasche und dann Stabilisierungszapfen. Diese Rangfolge ist dadurch bedingt, das die Lasche wesentlich größere Kräfte im Vergleich zu den Zapfen aufnehmen kann.If in doubt, he uses additional stabilizing elements in the order first the tab and then stabilization pin. This ranking is due to the fact that the tab can accommodate much larger forces compared to the pin.
Durch die notwendige Montage der Lasche vor dem press-fit-Setzen der Pfanne, ist die beschriebene Rangfolge nicht einzuhalten und der Operateur in seinen Möglichkeiten eingeschränkt.Due to the necessary mounting of the tab before the press-fit setting of the pan, the order of precedence is not observed and the surgeon is limited in its possibilities.
Aufgabe der ErfindungObject of the invention
Die Aufgabe der Erfindung besteht darin, ein Stabilisierungselement für eine modulare ovaläre Revisionspfanne derart zu entwickeln, dass es intraoperativ bei bereits im Implantatlager verpresster Revisionspfanne in Abhängigkeit von der Defektsituation gesetzt werden kann und eine stabile Verbindung mit dem Pfannengrundkörper eingehen kann.The object of the invention is to develop a stabilizing element for a modular oval revision socket in such a way that it can be set intraoperatively with the revision socket already pressed in the implant bed depending on the defect situation and can form a stable connection with the socket body.
Zur Lösung dieser Aufgabe ist bei einem Stabilisierungselement der eingangs genannten Art vorgesehen, dass an den beiden Seitenflächen des Anschlussbereichs keilförmige Zapfen angeordnet sind, die von der Stirnseite der Lasche beabstandet sind und zur Verbindung mit dem Laschenlager des Pfannengrundkörpers dienen, so dass sich Rotationsstabilität durch eine formschlüssige Blockmontage ergibt, und dass die mindestens eine Befestigungsschraubenöffnung zwischen den beiden Zapfen angeordnet ist. Bei einem Pfannenimplantat der eingangs genannten Art ist vorgesehen, dass der Pfannengrundkörper eine schwalbenschwanzförmige Nut aufweist, in welcher der Anschlussbereich des Stabilisierungselements eingebracht ist, wobei die Stirnseite des Anschlussbereichs des Stabilisierungselements keilförmig ausgeführt ist, so dass sich Rotationsstabilität durch eine formschlüssige Blockmontage ergibt.To achieve this object, it is provided in a stabilizing element of the type mentioned that are arranged on the two side surfaces of the terminal portion wedge-shaped pin, which are spaced from the end face of the tab and serve for connection to the tab bearing of the pan base, so that rotational stability by a positive block assembly results, and that the at least one fastening screw hole between the two pins is arranged. In a ladle implant of the type mentioned in the introduction, it is provided that the socket base body has a dovetail-shaped groove in which the connection region of the stabilization element is introduced, wherein the end face of the connection region of the stabilization element is wedge-shaped, so that rotational stability results from a positive block assembly.
Erfindungsgemäß wird in ein Laschenlager des Pfannengrundkörpers, welches eine schwalbenschwanzförmige Nut aufweist, die Befestigungslasche eingebracht. Die Stirnseite der Lasche ist im Befestigungsbereich keilförmig ausgeführt und an beiden Seitenflächen sind keilförmige Zapfen angeordnet, die von der Stirnseite der Lasche beabstandet sind. Sie sind so dimensioniert, dass ein kurzer Einführweg in das Lager ermöglicht wird und sie nach Montage nicht aus dem Lager herausragen.According to the invention, the fastening lug is introduced into a lug bearing of the socket base body, which has a dovetail-shaped groove. The front side of the tab is designed wedge-shaped in the attachment area and wedge-shaped pins are arranged on both side surfaces, which are spaced from the end face of the tab. They are dimensioned so that a short insertion path into the bearing is made possible and they do not stick out of the bearing after assembly.
Die Fixierung der Befestigungslasche erfolgt mit Hilfe von Befestigungsschrauben mit Rückdrehsicherung durch die Befestigungsschrauböffnungen der Lasche. Die Befestigungsschrauböffnungen sind so gestaltet, dass die Befestigungslasche in die schwalbenschwanzförmige Nut des Laschenlagers hineingezogen wird.The fixation of the mounting strap is done by means of fastening screws with reverse rotation through the Befestigungsschrauböffnungen the tab. The Befestigungsschrauböffnungen are designed so that the fastening tab is pulled into the dovetail groove of the tab bearing.
Im Nichtverbindungsbereich, das ist der Bereich, der im Knochen- und Gewebekontakt steht, besteht die Befestigungslasche (
BeispieleExamples
Die Erfindung wird mit Hilfe der Abbildungen näher erläutert. Hierzu zeigenThe invention will be explained in more detail with the aid of the figures. Show this
In
Der Pfannengrundkörper
Das Implantatlager kann durch Fräsungen mit lediglich zwei Halbkugel-Fräsköpfen vorbereitet werden.The implant bed can be prepared by milling with only two hemisphere milling heads.
Der Innenbereich
Für Defektsituationen, bei denen das Implantatlager in Bezug auf die Primärstabilität nicht hinreichend belastbar ist, sind zu deren Erhöhung verschiedene Verankerungszapfen und eine Befestigungslasche
Die Befestigungslasche
Durch diese Anordnung der keilförmigen Laschenzapfen
Die Lasche erhält durch die formschlüssige Blockmontage Rotationsstabilität. Durch das Befestigungslager im Pfannengrundkörper
Für den anatomisch geformten Teil der Lasche sind geometrisch unterschiedliche, entsprechend den anatomischen Anforderungen angepasste Ausführungen möglich. Die Wahl der einzusetzenden konkreten Lasche obliegt dem Operateur.For the anatomically shaped part of the tab geometrically different, adapted to the anatomical requirements versions are possible. The choice of the specific tab to be used is the responsibility of the surgeon.
Der Operateur kann die Befestigungslasche
Claims (10)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009024844A DE102009024844B4 (en) | 2009-06-09 | 2009-06-09 | Stabilizing element and acetabular implant for hip arthroplasty |
PCT/EP2010/057874 WO2010142621A1 (en) | 2009-06-09 | 2010-06-07 | Stabilizing element for hip joint prosthetics |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009024844A DE102009024844B4 (en) | 2009-06-09 | 2009-06-09 | Stabilizing element and acetabular implant for hip arthroplasty |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102009024844A1 DE102009024844A1 (en) | 2010-12-16 |
DE102009024844B4 true DE102009024844B4 (en) | 2012-12-06 |
Family
ID=42797162
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102009024844A Expired - Fee Related DE102009024844B4 (en) | 2009-06-09 | 2009-06-09 | Stabilizing element and acetabular implant for hip arthroplasty |
Country Status (2)
Country | Link |
---|---|
DE (1) | DE102009024844B4 (en) |
WO (1) | WO2010142621A1 (en) |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1034754A1 (en) * | 1999-03-10 | 2000-09-13 | Sulzer Orthopedics Ltd. | Kit for the outer shell of an artificial acetabular cup |
DE20105862U1 (en) * | 2001-04-04 | 2001-06-21 | Eska Implants Gmbh & Co | Pelvic socket of an artificial hip joint |
DE10118985A1 (en) * | 2001-04-18 | 2002-11-21 | Implantcast Gmbh | Acetabular system |
CA2454672A1 (en) * | 2001-07-23 | 2003-02-20 | Frederique Macara | Modular acetabular cup, and anchoring screw for fixing a prosthetic implant such as said acetabular cup |
DE69927485T2 (en) * | 1998-03-03 | 2006-07-06 | Tornier | MODULAR HIP JOINT IMPLANT |
US20070093133A1 (en) * | 2003-06-11 | 2007-04-26 | Ashton Roger W F | Fixing assembly |
DE102006002210B4 (en) * | 2006-01-16 | 2007-09-27 | Dot Gmbh | Modular revision socket for hip arthroplasty and anchoring pegs |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5360452A (en) * | 1991-05-20 | 1994-11-01 | Depuy Inc. | Enhanced fixation system for a prosthetic implant |
AU1582499A (en) * | 1997-10-31 | 1999-05-24 | Midwest Orthopaedic Research Foundation | Acetabular cup prosthesis with extension for deficient acetabulum |
-
2009
- 2009-06-09 DE DE102009024844A patent/DE102009024844B4/en not_active Expired - Fee Related
-
2010
- 2010-06-07 WO PCT/EP2010/057874 patent/WO2010142621A1/en active Application Filing
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE69927485T2 (en) * | 1998-03-03 | 2006-07-06 | Tornier | MODULAR HIP JOINT IMPLANT |
EP1034754A1 (en) * | 1999-03-10 | 2000-09-13 | Sulzer Orthopedics Ltd. | Kit for the outer shell of an artificial acetabular cup |
DE20105862U1 (en) * | 2001-04-04 | 2001-06-21 | Eska Implants Gmbh & Co | Pelvic socket of an artificial hip joint |
DE10118985A1 (en) * | 2001-04-18 | 2002-11-21 | Implantcast Gmbh | Acetabular system |
CA2454672A1 (en) * | 2001-07-23 | 2003-02-20 | Frederique Macara | Modular acetabular cup, and anchoring screw for fixing a prosthetic implant such as said acetabular cup |
US20070093133A1 (en) * | 2003-06-11 | 2007-04-26 | Ashton Roger W F | Fixing assembly |
DE102006002210B4 (en) * | 2006-01-16 | 2007-09-27 | Dot Gmbh | Modular revision socket for hip arthroplasty and anchoring pegs |
Also Published As
Publication number | Publication date |
---|---|
WO2010142621A4 (en) | 2011-02-03 |
WO2010142621A1 (en) | 2010-12-16 |
DE102009024844A1 (en) | 2010-12-16 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP2010107B1 (en) | Modular hip implant | |
EP1642552B1 (en) | Endoprothesis for a metatarsophalangeal joint | |
EP1959871B1 (en) | Facet joint prosthesis | |
DE60218686T2 (en) | MODULAR PROSTHETIC JOINT PAN | |
DE202005020876U1 (en) | Endoprosthesis comprises a shaft, which extends along a primary axis, a distal end piece and a proximal end piece | |
EP2282701A1 (en) | Scapular component of a shoulder joint prosthesis | |
WO2007041879A1 (en) | Inverse design of endoprosthesis for shoulder joints | |
DE112009002085T5 (en) | Modular implant for a joint prosthesis | |
DE3518246A1 (en) | ADJUSTABLE Hip joint prosthesis as part of a joint socket replacement system | |
EP1923022A2 (en) | Ankle endoprosthesis elements | |
EP0808617B1 (en) | Saddle prosthesis | |
DE8623855U1 (en) | Self-tensioning acetabular cup that can be implanted without cement | |
DE3917285A1 (en) | Shoulder prosthesis - has condyle and acetabulum made of specified material | |
WO2005063148A1 (en) | Joint socket for a hip endoprosthesis | |
DE102006002210B4 (en) | Modular revision socket for hip arthroplasty and anchoring pegs | |
DE202006006349U1 (en) | Modular hip implant | |
DE102009024844B4 (en) | Stabilizing element and acetabular implant for hip arthroplasty | |
WO2013060718A1 (en) | Adapter for an implant and knee joint prosthesis | |
WO2000045750A1 (en) | Hip endoprosthesis in which at least the articular surface of the femoral head is replaced | |
DE10223474A1 (en) | Cementless implant of the endoprosthetic replacement of the neck of the femur involves femur implant and bolts fitting though holes | |
DE19640747A1 (en) | Hip joint replacement implant | |
DE10224390B4 (en) | Cementless acetabular cup | |
DE102005001255B4 (en) | Inverse shoulder joint endoprosthesis with one-piece middle part | |
WO2003096938A2 (en) | Femoral neck endoprosthesis | |
DE10339600A1 (en) | Device for securing acetabulum prosthesis to bone, comprising threaded segment for being joined to matching area at prosthesis |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
R082 | Change of representative |
Representative=s name: PRINZ & PARTNER MBB PATENTANWAELTE RECHTSANWAE, DE Representative=s name: PRINZ & PARTNER PATENTANWAELTE RECHTSANWAELTE, DE Representative=s name: PRINZ & PARTNER PATENTANWAELTE RECHTSANWAELTE, 803 |
|
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20130307 |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |