Gattung des AnwendungsgegenstandesGenus of the application object
Inder Hüftendoprothetiksind Instrumente zur standardisierten Applikation des Knochenzementesbekannt, z. B als Zementkartuschen, Zementspritzen, Zementsiegel,Markraumdrainagesysteme, Entlüftungssystemeetc.. Diese Systeme betreffen Techniken, die die Applikation desKnochenzementes in den vorbereiteten Oberschenkelmarkraum ermöglichen.Inthe hip arthroplastyare instruments for the standardized application of the bone cementknown, for. B as cement cartridges, cement spray, cement seal,Medullary canal drainage systems, ventilation systemsetc .. These systems concern techniques that the application of theAllow bone cement into the prepared femoral medullary cavity.
Beiden Oberflächenersatzprothesendes Hüftgelenkes(z. B. McMinn-Prothese) muss der Knochenzement auf den bearbeitetenHüftkopfaufgebracht werden. Hier fürsind bisher keine Instrumente auf dem Markt erhältlich, um diese spezielle Zementapplikationstandardisiert zu ermöglichen.atthe surface replacement prosthesesof the hip joint(For example, McMinn prosthesis) must be the bone cement processed on theFemoral Headbe applied. ThereforSo far, there are no instruments available in the market for this particular cement applicationto be standardized.
Beinahezu allen bisher auf dem Markt befindlichen Oberflächenersatzprothesenwird die Hüftkopfkappemit Knochenzement verankert.atNearly all surface replacement prostheses on the market so farbecomes the femoral headcapanchored with bone cement.
DerKnochenzement wird dabei entweder in die Hüftkopfkappe vor dem Aufsetzenauf den bearbeiteten Hüftkopfeingefülltund dann mit der Kappe auf den Hüftkopfaufgebracht. Beim Festschlagen der Hüftkopfkappe wird dann der Knochenzementin die spongiösenRäume und/oderspeziell hergestellte Bohrungen eingepresst. Überschüssiger Knochenzement trittseitlich aus und muss anschließendentfernt werden. Diese Technik wird in der Regel mit hochviskösem Knochenzementdurchgeführt.Of theBone cement is either in the Hüftkopfkappe before touchdownon the processed femoral headfilledand then with the cap on the femoral headapplied. When tightening the femoral head cap then the bone cementin the cancellousRooms and / orspecially produced holes pressed. Excess bone cement occurslaterally and must be followedbe removed. This technique is usually done with high viscosity bone cementcarried out.
Niedrigvisköser Knochenzementwird in der Regel direkt auf den bearbeiteten Hüftkopf aufgebracht und vonHand in die Spongiosa und/oder speziell hergestellte Bohrungen eingepresst.Anschließendwird die Hüftkopfkappeaufgebracht und der Zement beim Einschlagen noch weiter eingepresstund überschüssiger Zementtritt seitlich aus.Low-viscosity bone cementis usually applied directly to the machined femoral head and byHand pressed into the cancellous bone and / or specially made holes.Subsequentlybecomes the femoral headcapApplied and pressed the cement while driving even furtherand excess cementexits sideways.
BeidenTechniken ist gemeinsam, das die Knochenzementapplikation nichtstandardisiert erfolgt, die Qualität der Knochenzementschichtzwischen Hüftkopfkappeund bearbeitetem Hüftkopfist daher sehr unterschiedlich und damit auch die Qualität der Hüftkopfkappenverankerung.BothTechniques are common, not the bone cement applicationstandardized, the quality of the bone cement layerbetween femoral head capand processed femoral headis therefore very different and therefore also the quality of Hüftkopfkappenverankerung.
Aufgabe derErfindungTask ofinvention
DieQualitätder Knochenzementschicht wird beeinflusst durch die Homogenität der Zementschicht,die Dicke der Zementschicht vor Aufsetzen der Kappe, die Viskosität des Zementes,die Höhe desEinpressdruckes und die gleichmäßige Verteilungdes Einpressdruckes überdie Oberflächedes bearbeiteten Hüftkopfes.Mit dem erfindungsgemäß beschriebenenInstrument wird durch die auf den bearbeiteten Hüftkopf abgestimmte formendeApplikationskammer eine standardisierte Dicke der Zementschichtgewährleistet.Der Zement kann in diese Kammer eingepresst oder eingesaugt werden.Die retrograde Zementapplikation vom Hüftkopfrand hin zur oberen Hüftkopfbegrenzungermöglichteinen blasen- und fremdkörperfreienZementmantel. Auch eine anterograde Zementapplikation ist mit einemsemipermeablen Dichtungsring am Hüftkopfrand denkbar. Mittelseiner Druckmesseinrichtung kann der mit der Zementspritze aufgebrachteDruck gemessen und reproduzierbar appliziert werden. Die Eindringtiefedes Knochenzementes in die Spongiosa und speziell hergestellte Bohrungenist abhängigvon der bekannten Viskositätdes Knochenzementes und dem aufgebrachte Druck.Thequalitythe bone cement layer is influenced by the homogeneity of the cement layer,the thickness of the cement layer before placing the cap, the viscosity of the cement,the height of thePressing pressure and uniform distributionthe press-in pressure overthe surfaceof the machined femoral head.With the invention describedInstrument is shaped by the shaping on the machined femoral headApplication chamber a standardized thickness of the cement layerguaranteed.The cement can be pressed or sucked into this chamber.The retrograde cement application from the femoral head margin to the upper femoral head boundaryallowsa bladder and foreign body freeCement mantle. Also an anterograde cement application is with aSemipermeable sealing ring on Hüftkopfrand conceivable. througha pressure measuring device can be applied with the cement syringePressure measured and reproducibly applied. The penetration depthof the bone cement into the cancellous bone and specially made holesdepends onfrom the known viscosityof the bone cement and the applied pressure.
Vorteileadvantages
Dieentscheidenden Qualitätsparameterdes Knochenzementes bei Oberflächenersatzprothesen desHüftgelenkes(Dicke der Knochenzementschicht, Homogenität der Knochenzementschichtund Eindringtiefe der Knochenzementschicht) werden reproduzierbarerreicht.Thedecisive quality parametersof bone cement in surface replacement prostheses of thehip joint(Thickness of the bone cement layer, homogeneity of the bone cement layerand penetration depth of the bone cement layer) become reproduciblereached.
Knochenzementfällt nichtin das Operationsgebiet sondern verbleibt im Applikatorsystem DasInstrument ermöglichtstandardisierte Versuchsreihen, um die optimale Zementmanteldickefür dieVerankerung von Oberflächenersatzprothesendes Hüftgelenkeszu bestimmen.bone cementdoes not fallinto the operating area but remains in the applicator system DasInstrument allowsstandardized test series to determine the optimum cement jacket thicknessfor theAnchoring of surface replacement prosthesesof the hip jointto determine.
GewerblicheNutzbarkeitcommercialusability
DasApplikationsinstumentarium ist auf alle bisher auf dem Markt befindlichenOberflächenersatzprothesendes Hüftgelenkesanwendbar.TheApplikationsinstumentarium is on all previously on the marketResurfacing prosthesesof the hip jointapplicable.
Ausführungsbeispielembodiment
ImAusführungsbeispielwird ein Hüftkopf
| Application Number | Priority Date | Filing Date | Title | 
|---|---|---|---|
| DE200410033471DE102004033471A1 (en) | 2004-07-10 | 2004-07-10 | Instrument e.g. cement syringe, for standardized application of bone cement, has slack nozzle with which bone cement is pressed or absorbed into chamber that is formed according to prepared head of femur | 
| Application Number | Priority Date | Filing Date | Title | 
|---|---|---|---|
| DE200410033471DE102004033471A1 (en) | 2004-07-10 | 2004-07-10 | Instrument e.g. cement syringe, for standardized application of bone cement, has slack nozzle with which bone cement is pressed or absorbed into chamber that is formed according to prepared head of femur | 
| Publication Number | Publication Date | 
|---|---|
| DE102004033471A1true DE102004033471A1 (en) | 2006-01-26 | 
| Application Number | Title | Priority Date | Filing Date | 
|---|---|---|---|
| DE200410033471WithdrawnDE102004033471A1 (en) | 2004-07-10 | 2004-07-10 | Instrument e.g. cement syringe, for standardized application of bone cement, has slack nozzle with which bone cement is pressed or absorbed into chamber that is formed according to prepared head of femur | 
| Country | Link | 
|---|---|
| DE (1) | DE102004033471A1 (en) | 
| Publication number | Priority date | Publication date | Assignee | Title | 
|---|---|---|---|---|
| WO2008092788A1 (en)* | 2007-02-01 | 2008-08-07 | Rudi Georg Bitsch | Cement applicator | 
| DE102011050361A1 (en)* | 2011-05-13 | 2012-11-15 | Philip Kasten | Exchangeable instrument attachment for cementing instrument for insertion of bone cement by pressure cementing for shoulder joints, is designed screwable or mountable on instrument tip of cementing pipe of cementing instrument | 
| DE102015105102A1 (en)* | 2015-04-01 | 2016-10-06 | Aesculap Ag | Medical cementing system | 
| Publication number | Priority date | Publication date | Assignee | Title | 
|---|---|---|---|---|
| US4274163A (en)* | 1979-07-16 | 1981-06-23 | The Regents Of The University Of California | Prosthetic fixation technique | 
| EP0598964B1 (en)* | 1992-11-20 | 1999-07-07 | Sulzer Orthopädie AG | Bone cement dispenser body for implant fixation | 
| EP1316297A1 (en)* | 2001-12-03 | 2003-06-04 | Sulzer Orthopedics Ltd. | Device for transfering bone cement into a spongiosa | 
| DE10233204A1 (en)* | 2002-07-17 | 2004-01-29 | Merete Medical Gmbh | Hip joint prosthesis consists of shaft inserted into proximal femur, cap as socket-head, air inlets and outlets and vacuum system connections | 
| Publication number | Priority date | Publication date | Assignee | Title | 
|---|---|---|---|---|
| US4274163A (en)* | 1979-07-16 | 1981-06-23 | The Regents Of The University Of California | Prosthetic fixation technique | 
| EP0598964B1 (en)* | 1992-11-20 | 1999-07-07 | Sulzer Orthopädie AG | Bone cement dispenser body for implant fixation | 
| EP1316297A1 (en)* | 2001-12-03 | 2003-06-04 | Sulzer Orthopedics Ltd. | Device for transfering bone cement into a spongiosa | 
| DE10233204A1 (en)* | 2002-07-17 | 2004-01-29 | Merete Medical Gmbh | Hip joint prosthesis consists of shaft inserted into proximal femur, cap as socket-head, air inlets and outlets and vacuum system connections | 
| Publication number | Priority date | Publication date | Assignee | Title | 
|---|---|---|---|---|
| WO2008092788A1 (en)* | 2007-02-01 | 2008-08-07 | Rudi Georg Bitsch | Cement applicator | 
| WO2010003716A1 (en)* | 2007-02-01 | 2010-01-14 | Rudi Georg Bitsch | Cement applicator having a molding cap | 
| DE102011050361A1 (en)* | 2011-05-13 | 2012-11-15 | Philip Kasten | Exchangeable instrument attachment for cementing instrument for insertion of bone cement by pressure cementing for shoulder joints, is designed screwable or mountable on instrument tip of cementing pipe of cementing instrument | 
| DE102011050361B4 (en)* | 2011-05-13 | 2017-11-16 | Philip Kasten | Instrument attachment on a cementing instrument and method for introducing bone cement by pressure cementing | 
| DE102015105102A1 (en)* | 2015-04-01 | 2016-10-06 | Aesculap Ag | Medical cementing system | 
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| Date | Code | Title | Description | 
|---|---|---|---|
| OM8 | Search report available as to paragraph 43 lit. 1 sentence 1 patent law | ||
| 8122 | Nonbinding interest in granting licenses declared | ||
| 8139 | Disposal/non-payment of the annual fee |