EP2072114B1 - Device for mixing bone cement - Google Patents
Device for mixing bone cement Download PDFInfo
- Publication number
- EP2072114B1 EP2072114B1 EP08018303A EP08018303A EP2072114B1 EP 2072114 B1 EP2072114 B1 EP 2072114B1 EP 08018303 A EP08018303 A EP 08018303A EP 08018303 A EP08018303 A EP 08018303A EP 2072114 B1 EP2072114 B1 EP 2072114B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- mixing
- dispensing tube
- handle
- guide body
- cylinder
- 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.)
- Active
Links
- 238000002156 mixing Methods 0.000 title claims abstract description 94
- 239000002639 bone cement Substances 0.000 title claims description 10
- 239000013013 elastic material Substances 0.000 claims description 2
- 239000004568 cement Substances 0.000 description 12
- 239000000843 powder Substances 0.000 description 8
- 239000000178 monomer Substances 0.000 description 7
- 238000007599 discharging Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
Images
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F31/00—Mixers with shaking, oscillating, or vibrating mechanisms
- B01F31/44—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement
- B01F31/441—Mixers with shaking, oscillating, or vibrating mechanisms with stirrers performing an oscillatory, vibratory or shaking movement performing a rectilinear reciprocating movement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/50—Movable or transportable mixing devices or plants
- B01F33/501—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use
- B01F33/5011—Movable mixing devices, i.e. readily shifted or displaced from one place to another, e.g. portable during use portable during use, e.g. hand-held
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/75—Discharge mechanisms
- B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
- B01F35/75425—Discharge mechanisms characterised by the means for discharging the components from the mixer using pistons or plungers
- B01F35/754251—Discharge mechanisms characterised by the means for discharging the components from the mixer using pistons or plungers reciprocating in the mixing receptacle
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
- B01F2101/20—Mixing of ingredients for bone cement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
- B01F35/30—Driving arrangements; Transmissions; Couplings; Brakes
- B01F35/32—Driving arrangements
- B01F35/32005—Type of drive
- B01F35/3202—Hand driven
Definitions
- the invention relates to a mixing device, in particular for bone cements and their components, with a mixing cylinder, at one end of a closed end face is arranged coaxial with the longitudinal axis of the mixing cylinder has a sliding bearing forming opening in which a discharge tube arranged displaceably in the direction of the longitudinal axis is, wherein disposed on the inside of the mixing cylinder end of the discharge tube, a mixing disk having one or more mixing apertures, wherein the mixing disk has a central outlet opening and wherein the mixing disk between the closed end side and a bottom of the mixing device is arranged.
- Bone cements basically consist of a liquid monomer component and a powder component.
- a plastically deformable dough in which a polymerization reaction takes place, so that with increasing polymerization, the viscosity of the cement dough increases until solidification or curing.
- PMMA bone cements can be mixed by simply mixing the powder component with the monomer component in a crucible with the aid of spatulas.
- a number of mixing devices have been described that allow mixing of the cement components in the closed system so that the burden on the medical staff can be reduced by any monomer fumes and cement powder dusts that may occur.
- Such mixing devices are made, for example US 5,779,356 .
- the object of the present invention is to provide a mixing device with which the cement powder can be mixed with the monomer component to form a largely non-porous cement paste, wherein the dough should be reliably applied in a simple manner.
- a handle is releasably fixed, mixing of the components in a simple manner possible, wherein the discharge pipe is used as part of the mixing mechanism. After mixing, it is easy to dispense the cement from the mixing device.
- the handle can be non-positively connected to the discharge pipe.
- a guide body is arranged on the handle, which protrudes into the discharge pipe, wherein between the guide body and discharge at least one clamping body is arranged.
- the guide body is movable and slidably disposed on the handle in the direction of the longitudinal axis of the discharge tube.
- the discharge pipe is therefore used on the one hand for mixing the cement component and on the other hand for discharging the ready-mixed cement paste.
- the discharge pipe is closed by a cylinder which is connected to the guide body.
- a stop surface is arranged on the handle, to which the clamping body can be applied and that the clamping body is fixed to the guide body.
- the clamping body can be fixed to the guide body in a material-locking, positive-locking or force-locking manner.
- Stop surface and clamping body may each have an extension along the longitudinal axis and it may be advantageous that the distance of the stop surface and / or the stop surface facing surface of the clamping body to the longitudinal axis in the direction of the longitudinal axis over at least part of its extension continuously changes. As a result, an optimal fixability of the handle and the guide body is possible.
- On the guide body thus a so-called spreader and a handle on its outwardly projecting end arranged.
- the guide body can be detachably connected to the discharge pipe by an interference fit of this expansion body (clamping body) against an inner axially slotted cylinder and an outer cylinder, both of which can be arranged on the handle, and after completion of the mixing operation can be characterized by axial movement of the guide body in the direction Grip the press fit to be solved, wherein the guide body can be removed together with the discharge pipe on its inner side closing cylinder from the discharge pipe.
- the quick release locking of the guide body allows opening of the discharge tube within a few seconds.
- the ready mixed cement dough can be applied without delay after mixing. This gives the medical staff a longer time window for processing the cement.
- the guide body extends in the discharge pipe, preferably in the area of the mixing disk.
- the guide body furthermore has a closed end face pointing into the interior of the mixing cylinder with a diameter which corresponds to the inner diameter of the discharge pipe or the discharge opening of the mixing disk. This prevents inadvertent penetration of bone cement or its components into the discharge tube.
- a hollow cylinder may be arranged, which has at least over a part of its length extending in the longitudinal direction slots. This slotted hollow cylinder is pressed by the clamp body to the discharge tube, whereby the handle can be securely fixed.
- the hollow cylinder is thus preferably fixed to the handle, wherein the stop surface is arranged on the hollow cylinder.
- the clamping body can be fixed non-positively between the guide body and discharge pipe.
- the secure holder is thereby ensured by the pressing of the parts together and the high frictional forces generated thereby.
- the clamping body may advantageously be formed of an elastic material, so that the power transmission is improved.
- the closed front side of the mixing device is designed as a detachable lid, preferably as a screw cap.
- the bottom is expediently displaceable in the mixing cylinder in its longitudinal direction. It then serves both as a boundary of the mixing cylinder and as a piston for discharging the cement dough.
- the in FIG. 1 mixing cylinder 1 of the mixing device illustrated with its upper region is closed at its upper end side with a screw cap 2.
- a discharge pipe 3 into it.
- the discharge pipe 3 slides in the opening 4 of the screw cap 2 in the direction of the longitudinal axis of the mixing device.
- a mixing disk 5 is arranged in the interior of the mixing cylinder 1, which is slidably applied to the inner wall of the mixing cylinder 1.
- the mixing disk 5 has a plurality of mixing openings, not shown in the drawing, through which the space of the mixing cylinder 1 lying above the mixing disk 5 is connected to the underlying part of the interior of the mixing cylinder 1.
- the guide body 7 protrudes out of the discharge pipe 3 at the outer end and into the handle 9.
- the guide body 7 is formed substantially as a cylindrical rod. Your projecting into the handle 9 end is rotatably mounted by means of a rotary joint 10 on a rocker 11.
- the rocker 11 is rotatably mounted by means of a pivot point 12 on the lower part 13 of the handle 9.
- the guide body 7 facing away from the end of the rocker 11 rests on a support 14 which is rigidly arranged on the upper part 15 of the handle 9.
- the upper part 15 is rotatably connected to the lower part 13 of the handle 9 via the joint 16.
- the rotatable connections of the rotary joint 10, the pivot point 12 and the joint 16 are realized in that in each case engages a not shown in the drawing cylindrical pin in the two parts to be joined together.
- Other common rotary joints may be used.
- nubs may be attached to one of the two components involved, which engage in grooves or similar depressions of the other part.
- a clamping body 17 is arranged around this.
- the clamping body 17 has a diameter which is slightly larger than the diameter of the stop surface 18 having hollow cylinder 19, which extends at the bottom of the lower part 13 of the handle 9 in the discharge pipe 3 and rests against the inner wall.
- the clamping body 17 presses the hollow cylinder 19 circumferentially against the inside of the discharge pipe 3, so that the guide body 7 is fixed.
- the hollow cylinder 19 is slotted and has individual lamellae 20 ( FIG. 4 ) to be more easily pressed against the discharge pipe 3 can. Slots 21 are provided between the slats 20.
- the clamping body 17 itself is formed of plastic and materially connected to the guide body 7.
- a tubular connecting piece 22 is arranged on the lower part 13 around the outside of the discharge tube 3, so that the clamping holder is further stabilized.
- the support 14 lifts one end of the rocker 11, so that in an abutment 12 'with its pivot point 12 mounted rocker 11 rotates about the pivot point 12.
- the end of the rocker 11 having the rotary joint 10 is moved downwards in the direction of the discharge pipe 3, so that the guide body 7 is moved in the mixing cylinder 1.
- the clamping body 17 is released from the stop surface 18 of the hollow cylinder 19, so that the pressure of the hollow cylinder 19 against the discharge pipe 3 decreases and the handle 9 can be released from the discharge pipe 3.
- the handle 9 is pulled away approximately in the direction of the longitudinal axis of the discharge pipe 3, so that the guide body 7 is pulled out of the discharge pipe 3.
- the outlet opening is thereby released, so that the bone cement located in the mixing cylinder 1 can be deployed.
- FIG. 3 the upper part 15 of the handle 9 is shown.
- the joint opening 16 'of the cylinder pin not explicitly shown in the drawing is used, which engages in the joint 16 of the lower part 13 to rotatably connect lower part 13 and upper part 15 with each other.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Surgical Instruments (AREA)
- Prostheses (AREA)
- Materials For Medical Uses (AREA)
- Preparation Of Clay, And Manufacture Of Mixtures Containing Clay Or Cement (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
Abstract
Description
Die Erfindung betrifft eine Mischvorrichtung, insbesondere für Knochenzemente und deren Komponenten, mit einem Mischzylinder, an dessen einem Ende eine geschlossene Stirnseite angeordnet ist, die koaxial zur Längsachse des Mischzylinders eine ein Gleitlager bildende Öffnung aufweist, in der ein Austragrohr in Richtung der Längsachse verschiebbar angeordnet ist, wobei an dem im Inneren des Mischzylinders angeordneten Ende des Austragrohres eine eine oder mehrere Mischöffnungen aufweisende Mischscheibe angeordnet ist, wobei die Mischscheibe eine zentrische Austrittsöffnung aufweist und wobei die Mischscheibe zwischen der geschlossenen Stirnseite und einem Boden der Mischvorrichtung angeordnet ist.The invention relates to a mixing device, in particular for bone cements and their components, with a mixing cylinder, at one end of a closed end face is arranged coaxial with the longitudinal axis of the mixing cylinder has a sliding bearing forming opening in which a discharge tube arranged displaceably in the direction of the longitudinal axis is, wherein disposed on the inside of the mixing cylinder end of the discharge tube, a mixing disk having one or more mixing apertures, wherein the mixing disk has a central outlet opening and wherein the mixing disk between the closed end side and a bottom of the mixing device is arranged.
Knochenzemente bestehen grundsätzlich aus einer flüssigen Monomerkomponente und einer Pulverkomponente. Beim Vermischen der Pulverkomponente mit der Monomerkomponente entsteht durch Quellung der Polymere der Pulverkomponente ein plastisch verformbarer Teig, in dem eine Polymerisationsreaktion abläuft, so dass sich mit fortschreitender Polymerisation die Viskosität des Zementteiges erhöht bis zur Erstarrung bzw. Aushärtung. Derartige sogenannte PMMA-Knochenzemente können durch einfaches Vermischen der Pulverkomponente mit der Monomerkomponente in einem Tiegel mit Hilfe von Spateln vermischt werden. Alternativ dazu wurden eine Reine von Mischvorrichtungen beschrieben, die eine Vermischung der Zementkomponenten im geschlossenen System erlauben, so dass die Belastung des medizinischen Personals durch evtl. auftretende Monomerdämpfe und Zementpulverstäube verringert werden kann. Solche Mischvorrichtungen sind beispielsweise aus
Aufgabe der vorliegenden Erfindung ist es, eine Mischvorrichtung bereit zu stellen, mit der das Zementpulver mit der Monomerkomponente unter Bildung eines weitgehend porenfreien Zementteiges vermischt werden kann, wobei der Teig auf einfache Weise zuverlässig appliziert werden soll.The object of the present invention is to provide a mixing device with which the cement powder can be mixed with the monomer component to form a largely non-porous cement paste, wherein the dough should be reliably applied in a simple manner.
Die der Erfindung zugrunde liegende Aufgabe wird durch die Merkmale des Hauptanspruchs gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben. Dadurch, dass an dem gegenüber liegenden Austragende des Austragrohres ein Handgriff lösbar fixiert ist, ist ein Mischen der Komponenten auf einfache Weise möglich, wobei das Austragrohr als Teil der Mischmechanik verwendet wird. Nach dem Mischen ist ein Ausbringen des Zementes aus der Mischvorrichtung auf einfache Weise möglich. Insbesondere kann der Handgriff kraftschlüssig mit dem Austragrohr verbunden sein. Erfindungsgemäß ist an dem Handgriff ein Führungskörper angeordnet, der in das Austragrohr hineinragt, wobei zwischen Führungskörper und Austragrohr mindestens ein Klemmkörper angeordnet ist. Der Führungskörper ist beweglich und in Richtung der Längsachse des Austragrohres verschiebbar an dem Handgriff angeordnet. Bei einer solchen Mischvorrichtung wird das Austragrohr also einerseits zum Vermischen der Zementkomponente und andererseits zum Austragen des fertig gemischten Zementteigs verwendet. Während des Mischvorganges ist das Austragrohr durch einen Zylinder verschlossen, der mit dem Führungskörper verbunden ist.The object underlying the invention is solved by the features of the main claim. Advantageous embodiments are specified in the subclaims. Characterized in that on the opposite discharge end of the discharge pipe, a handle is releasably fixed, mixing of the components in a simple manner possible, wherein the discharge pipe is used as part of the mixing mechanism. After mixing, it is easy to dispense the cement from the mixing device. In particular, the handle can be non-positively connected to the discharge pipe. According to the invention a guide body is arranged on the handle, which protrudes into the discharge pipe, wherein between the guide body and discharge at least one clamping body is arranged. The guide body is movable and slidably disposed on the handle in the direction of the longitudinal axis of the discharge tube. In such a mixing device, the discharge pipe is therefore used on the one hand for mixing the cement component and on the other hand for discharging the ready-mixed cement paste. During the mixing process, the discharge pipe is closed by a cylinder which is connected to the guide body.
Erfindungsgemäß ist es, dass an dem Handgriff eine Anschlagfläche angeordnet ist, an die der Klemmkörper anlegbar ist und dass der Klemmkörper an dem Führungskörper fixiert ist. Der Klemmkörper kann insbesondere stoffschlüssig, formschlüssig oder kraftschlüssig an dem Führungskörper fixiert sein. Anschlagfläche und Klemmkörper können jeweils eine Erstreckung längs der Längsachse aufweisen und es kann vorteilhaft sein, dass sich der Abstand der Anschlagfläche und/oder der der Anschlagfläche zugewandten Oberfläche des Klemmkörpers zur Längsachse in Richtung der Längsachse über zumindest einen Teil ihrer Erstreckung stetig ändert. Dadurch ist eine optimale Fixierbarkeit des Handgriffes und des Führungskörpers möglich. An dem Führungskörper sind somit ein sogenannter Spreizkörper und ein Griffstück an dessen nach außen ragendem Ende angeordnet. Der Führungskörper kann durch eine Presspassung dieses Spreizkörpers (Klemmkörper) gegen einen inneren axial geschlitzten Zylinder und einen äußeren Zylinder, die beide an dem Griffstück angeordnet sein können, lösbar mit dem Austragrohr verbunden und nach Beendigung des Mischvorganges kann dadurch durch axiale Bewegung des Führungskörpers in Richtung Griffstück die Presspassung gelöst werden, wobei der Führungskörper zusammen mit dem das Austragrohr an seiner Innenseite verschließenden Zylinder aus dem Austragrohr entfernt werden kann. Dies sichert eine einfache Handhabung der Mischvorrichtung, da die kombinierte Verwendung des Austragrohres zum Mischen und zum Austragen des Zementteiges sehr anwenderfreundlich ist. Die schnell lösbare Verriegelung des Führungskörpers erlaubt eine Öffnung des Austragrohres innerhalb weniger Sekunden. Damit kann der fertig gemischte Zementteig ohne Zeitverlust nach dem Mischen appliziert werden. Dem medizinischen Personal steht dadurch ein größeres Zeitfenster zur Verarbeitung des Zementes zur Verfügung.According to the invention, a stop surface is arranged on the handle, to which the clamping body can be applied and that the clamping body is fixed to the guide body. In particular, the clamping body can be fixed to the guide body in a material-locking, positive-locking or force-locking manner. Stop surface and clamping body may each have an extension along the longitudinal axis and it may be advantageous that the distance of the stop surface and / or the stop surface facing surface of the clamping body to the longitudinal axis in the direction of the longitudinal axis over at least part of its extension continuously changes. As a result, an optimal fixability of the handle and the guide body is possible. On the guide body thus a so-called spreader and a handle on its outwardly projecting end arranged. The guide body can be detachably connected to the discharge pipe by an interference fit of this expansion body (clamping body) against an inner axially slotted cylinder and an outer cylinder, both of which can be arranged on the handle, and after completion of the mixing operation can be characterized by axial movement of the guide body in the direction Grip the press fit to be solved, wherein the guide body can be removed together with the discharge pipe on its inner side closing cylinder from the discharge pipe. This assures easy handling of the mixing device since the combined use of the discharge tube for mixing and discharging the cement dough is very user friendly. The quick release locking of the guide body allows opening of the discharge tube within a few seconds. Thus, the ready mixed cement dough can be applied without delay after mixing. This gives the medical staff a longer time window for processing the cement.
Wesentlich ist es dabei, dass der Führungskörper sich in dem Austragrohr, bis vorzugsweise in den Bereich der Mischscheibe, erstreckt. Der Führungskörper weist des Weiteren eine in das Innere des Mischzylinders weisende geschlossene Stirnseite auf mit einem Durchmesser, der dem Innendurchmesser des Austragrohres oder der Austrittsöffnung der Mischscheibe entspricht. Dadurch wird ein unbeabsichtigtes Eindringen von Knochenzement oder dessen Komponenten in das Austragrohr verhindert. Zwischen dem Klemmkörper und dem Austragrohr kann ein Hohlzylinder angeordnet sein, der zumindest über einen Teil seiner Länge in Längsrichtung verlaufende Schlitze aufweist. Dieser geschlitzte Hohlzylinder wird durch den Klemmkörper an das Austragrohr gepresst, wodurch der Handgriff sicher fixiert werden kann. Der Hohlzylinder ist also vorzugsweise an dem Handgriff fixiert, wobei die Anschlagfläche an dem Hohlzylinder angeordnet ist. Der Klemmkörper kann kraftschlüssig zwischen Führungskörper und Austragrohr fixiert sein. Die sichere Halterung wird dabei durch das Anpressen der Teile aneinander und die dadurch erzeugten hohen Reibungskräfte gewährleistet. Der Klemmkörper kann vorteilhafterweise aus einem elastischen Material gebildet sein, so dass die Kraftübertragung verbessert wird.It is essential that the guide body extends in the discharge pipe, preferably in the area of the mixing disk. The guide body furthermore has a closed end face pointing into the interior of the mixing cylinder with a diameter which corresponds to the inner diameter of the discharge pipe or the discharge opening of the mixing disk. This prevents inadvertent penetration of bone cement or its components into the discharge tube. Between the clamping body and the discharge pipe, a hollow cylinder may be arranged, which has at least over a part of its length extending in the longitudinal direction slots. This slotted hollow cylinder is pressed by the clamp body to the discharge tube, whereby the handle can be securely fixed. The hollow cylinder is thus preferably fixed to the handle, wherein the stop surface is arranged on the hollow cylinder. The clamping body can be fixed non-positively between the guide body and discharge pipe. The secure holder is thereby ensured by the pressing of the parts together and the high frictional forces generated thereby. The clamping body may advantageously be formed of an elastic material, so that the power transmission is improved.
Zweckmäßig ist es weiterhin, dass die geschlossene Stirnseite der Mischvorrichtung als lösbarer Deckel, vorzugsweise als Schraubdeckel ausgebildet ist. Des Weiteren ist der Boden zweckmäßigerweise in dem Mischzylinder in dessen Längsrichtung verschiebbar. Er dient dann sowohl als Begrenzung des Mischzylinders als auch als Kolben zum Austragen des Zementteiges.It is expedient, furthermore, that the closed front side of the mixing device is designed as a detachable lid, preferably as a screw cap. Furthermore, the bottom is expediently displaceable in the mixing cylinder in its longitudinal direction. It then serves both as a boundary of the mixing cylinder and as a piston for discharging the cement dough.
Nachfolgend wird ein Ausführungsbeispiel der Erfindung anhand einer Zeichnung näher erläutert. In der Zeichnung zeigt
Figur 1- das Oberteil einer Mischvorrichtung mit Austragrohr und Handgriff, im Schnitt
Figur 2- den Handgriff, im Schnitt
Figur 3- den Handgriff, in der Seitenansicht
Figur 4- das Unterteil des Handgriffes mit Hohlzylinder.
- FIG. 1
- the upper part of a mixing device with discharge pipe and handle, in section
- FIG. 2
- the handle, on average
- FIG. 3
- the handle, in side view
- FIG. 4
- the lower part of the handle with hollow cylinder.
Der in
Der Führungskörper 7 ragt am äußeren Ende aus dem Austragrohr 3 heraus und in den Handgriff 9 hinein. Der Führungskörper 7 ist im Wesentlichen als zylindrische Stange ausgebildet. Ihr in den Handgriff 9 hineinragendes Ende ist mittels eines Drehgelenks 10 an einer Wippe 11 drehbar befestigt. Die Wippe 11 ist mittels eines Drehpunktes 12 an dem Unterteil 13 des Handgriffes 9 drehbar befestigt. Das dem Führungskörper 7 abgewandte Ende der Wippe 11 liegt auf einer Auflage 14 auf, die an dem Oberteil 15 des Handgriffs 9 starr angeordnet ist. Der Oberteil 15 ist mit dem Unterteil 13 des Handgriffes 9 drehbar über das Gelenk 16 verbunden. Die drehbaren Verbindungen des Drehgelenkes 10, des Drehpunktes 12 und des Gelenkes 16 werden dadurch realisiert, dass jeweils ein in der Zeichnung nicht dargestellter zylindrischer Zapfen in die beiden miteinander zu verbindenden Teile eingreift. Es können auch andere übliche Drehverbindungen verwendet werden. Beispielsweise können an einem der beiden beteiligten Bauteile Noppen angebracht sein, die in Nuten oder ähnliche Vertiefungen des jeweils anderen Teiles eingreifen.The
Im oberen Bereich des Führungskörpers 7 ist um diesen herum ein Klemmkörper 17 angeordnet. Der Klemmkörper 17 weist einen Durchmesser auf, der etwas größer ist als der Durchmesser des die Anschlagfläche 18 aufweisenden Hohlzylinders 19, der sich an der Unterseite des Unterteiles 13 des Handgriffes 9 in das Austragrohr 3 hinein erstreckt und an dessen Innenwand anliegt. In dem in
In der In
In
Claims (11)
- Mixing facility for bone cements and components thereof, having a mixing cylinder (1), one end of which has a closed front surface arranged on it which comprises, coaxial to the longitudinal axis of the mixing cylinder (1), an opening that forms a sliding contact bearing, in which a dispensing tube (3) is arranged such as to be shiftable in the direction of the longitudinal axis, whereby a mixing disc (5) comprising one or more mixing openings is arranged on the end of the dispensing tube (3) that is arranged on the interior of the mixing cylinder (1), whereby the mixing disc (5) comprises a centric exit opening, and whereby the mixing disc (5) is arranged between the closed front surface and a floor of the mixing facility, whereby a handle (9) is fixed in detachable fashion on the opposite dispensing end of the dispensing tube (3), a guide body (7) that projects into the dispensing tube (3) is arranged on the handle (9), whereby the guide body (7) is mobile and arranged on the handle (9) such as to be shiftable in the direction of the longitudinal axis of the dispensing tube (3), and whereby the guide body (7) extends in said dispensing tube (3) and comprises a closed front surface that points into the interior of the mixing cylinder (1) and has a diameter that corresponds to the internal diameter of the dispensing tube (3) or of the exit opening of the mixing disc (5), characterised in that at least one clamping body (17) is arranged between guide body (7) and dispensing tube (3), and in that the handle (9) has a stop surface (18) arranged on it against which the clamping body (17) can be touched, and in that the clamping body (17) is fixed to the guide body (7).
- Mixing facility according to claim 1, characterised in that the handle (9) is connected to the dispensing tube (3) in a non-positive fit fashion.
- Mixing facility according to claim 1 or 2, characterised in that the clamping body (17) is fixed to the guide body (7) in a firmly bonded, positive fit or non-positive fit fashion.
- Mixing facility according to any one of the claims 1 to 3, characterised in that stop surface (18) and clamping body (17) each comprise an extension along the longitudinal axis and in that the distance of the stop surface (18) and/or the surface of the clamping body (17) facing the stop surface (18) from the longitudinal axis changes steadily in the direction of the longitudinal axis over at least part of its extension.
- Mixing facility according to any one of the claims 1 to 4, characterised in that the guide body (7) extends in said dispensing tube (3) to the region of the mixing disc (5).
- Mixing facility according to any one of the claims 1 to 5, characterised in that a hollow cylinder (19) comprising slots (21), which extend in longitudinal direction over at least part of its length, is arranged between the clamping body (17) and the dispensing tube (3).
- Mixing facility according to claim 6, characterised in that the hollow cylinder (19) is fixed to the handle (9) and in that the stop surface (18) is arranged on the hollow cylinder (19).
- Mixing facility according to any one of the claims 1 to 7, characterised in that the clamping body (17) is fixed in a non-positive fit fashion between guide body (7) and dispensing tube (3).
- Mixing facility according to claim 1, characterised in that the clamping body (17) is formed from an elastic material.
- Mixing facility according to any one of the claims 1 to 9, characterised in that the closed front surface is provided in the form of a detachable lid.
- Mixing facility according to any one of the claims 1 to 10, characterised in that the floor is shiftable in said mixing cylinder (1) in the longitudinal direction thereof.
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL08018303T PL2072114T3 (en) | 2007-12-19 | 2008-10-20 | Device for mixing bone cement |
SI200830200T SI2072114T1 (en) | 2007-12-19 | 2008-10-20 | Device for mixing bone cement |
CY20111100358T CY1111376T1 (en) | 2007-12-19 | 2011-04-05 | PROVISION FOR CONCRETE BONE MIXING |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007061696A DE102007061696B4 (en) | 2007-12-19 | 2007-12-19 | Mixing device, especially for bone cements |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2072114A1 EP2072114A1 (en) | 2009-06-24 |
EP2072114B1 true EP2072114B1 (en) | 2011-01-05 |
Family
ID=40377154
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP08018303A Active EP2072114B1 (en) | 2007-12-19 | 2008-10-20 | Device for mixing bone cement |
Country Status (10)
Country | Link |
---|---|
EP (1) | EP2072114B1 (en) |
AT (1) | ATE494060T1 (en) |
CY (1) | CY1111376T1 (en) |
DE (2) | DE102007061696B4 (en) |
DK (1) | DK2072114T3 (en) |
ES (1) | ES2359032T3 (en) |
HR (1) | HRP20110222T1 (en) |
PL (1) | PL2072114T3 (en) |
PT (1) | PT2072114E (en) |
SI (1) | SI2072114T1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013011295A1 (en) | 2013-07-08 | 2015-01-08 | Heraeus Medical Gmbh | Device for storing and mixing bone cement |
EP2883603A1 (en) | 2013-12-16 | 2015-06-17 | Heraeus Medical GmbH | Device for storing and mixing bone cement |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102010046055B4 (en) | 2010-09-22 | 2012-10-25 | Heraeus Medical Gmbh | Mixing device for Prepack vacuum cementing system |
EP2452742A1 (en) | 2010-11-11 | 2012-05-16 | Krämer AG Bassersdorf | Control device for a mixing device |
Family Cites Families (12)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3439975A1 (en) * | 1983-12-10 | 1985-06-20 | Upat Gmbh & Co, 7830 Emmendingen | Injection cartridge |
DE8335529U1 (en) * | 1983-12-10 | 1984-03-08 | Upat Gmbh & Co, 7830 Emmendingen | SPRAY CARTRIDGE |
DE8505393U1 (en) * | 1985-02-26 | 1985-04-11 | Korte-Jungermann, Hans-Werner, 4156 Willich | Spray cartridge |
SE462315B (en) * | 1989-05-03 | 1990-06-11 | Surgitec Ab | DEVICE FOR MANUFACTURING BENCEMENT |
SE510490C2 (en) * | 1992-02-07 | 1999-05-31 | Scandimed International Ab | Process for producing bone cement and apparatus for carrying out the process |
SE9301599L (en) * | 1993-05-10 | 1994-06-27 | Cemvac System Ab | Device for loading bone cement components into a pressurized mixing vessel |
DE4409610C3 (en) * | 1994-03-21 | 2001-09-20 | Scandimed Internat Ab Sjoebo | Mixing device |
US5779356A (en) * | 1996-02-21 | 1998-07-14 | Chan; Kwan-Ho | Apparatus and method for mixing first and second components of a bone cement in a vacuum |
DE19828351C2 (en) * | 1997-06-26 | 1999-06-17 | Hans Georg Kupp | Spray cartridge |
US6120174A (en) * | 1999-01-14 | 2000-09-19 | Bristol-Myers Squibb | Apparatus and method for mixing and dispensing bone cement |
AU2001266460B2 (en) * | 2001-06-14 | 2005-09-29 | Cemvac System Ab | Method and device for preparation of bone cement |
SE527528C2 (en) * | 2004-06-22 | 2006-04-04 | Bone Support Ab | Apparatus for the preparation of curable pulp and use of the apparatus |
-
2007
- 2007-12-19 DE DE102007061696A patent/DE102007061696B4/en active Active
-
2008
- 2008-10-20 AT AT08018303T patent/ATE494060T1/en active
- 2008-10-20 DE DE502008002200T patent/DE502008002200D1/en active Active
- 2008-10-20 SI SI200830200T patent/SI2072114T1/en unknown
- 2008-10-20 PL PL08018303T patent/PL2072114T3/en unknown
- 2008-10-20 PT PT08018303T patent/PT2072114E/en unknown
- 2008-10-20 DK DK08018303.1T patent/DK2072114T3/en active
- 2008-10-20 EP EP08018303A patent/EP2072114B1/en active Active
- 2008-10-20 ES ES08018303T patent/ES2359032T3/en active Active
-
2011
- 2011-03-28 HR HR20110222T patent/HRP20110222T1/en unknown
- 2011-04-05 CY CY20111100358T patent/CY1111376T1/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013011295A1 (en) | 2013-07-08 | 2015-01-08 | Heraeus Medical Gmbh | Device for storing and mixing bone cement |
EP2823881A1 (en) | 2013-07-08 | 2015-01-14 | Heraeus Medical GmbH | Device and method for storing and mixing bone cement |
EP2883603A1 (en) | 2013-12-16 | 2015-06-17 | Heraeus Medical GmbH | Device for storing and mixing bone cement |
Also Published As
Publication number | Publication date |
---|---|
DK2072114T3 (en) | 2011-04-11 |
CY1111376T1 (en) | 2015-08-05 |
ES2359032T3 (en) | 2011-05-17 |
DE102007061696B4 (en) | 2010-03-18 |
ATE494060T1 (en) | 2011-01-15 |
HRP20110222T1 (en) | 2011-04-30 |
PL2072114T3 (en) | 2011-06-30 |
SI2072114T1 (en) | 2011-06-30 |
EP2072114A1 (en) | 2009-06-24 |
DE102007061696A1 (en) | 2009-06-25 |
DE502008002200D1 (en) | 2011-02-17 |
PT2072114E (en) | 2011-04-05 |
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