EP2486908B1 - Operating table column - Google Patents

Operating table column Download PDF

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Publication number
EP2486908B1
EP2486908B1 EP12154695.6A EP12154695A EP2486908B1 EP 2486908 B1 EP2486908 B1 EP 2486908B1 EP 12154695 A EP12154695 A EP 12154695A EP 2486908 B1 EP2486908 B1 EP 2486908B1
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EP
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Prior art keywords
axis
head part
actuating drive
operating table
column
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EP12154695.6A
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German (de)
French (fr)
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EP2486908A3 (en
EP2486908A2 (en
Inventor
Guido Koch
Rolf Revenus
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Maquet GmbH
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Maquet GmbH
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/02—Adjustable operating tables; Controls therefor
    • A61G13/04—Adjustable operating tables; Controls therefor tiltable around transverse or longitudinal axis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/02—Adjustable operating tables; Controls therefor

Definitions

  • the invention relates to an operating table column comprising a pedestal, a column part connected to the pedestal, a head part intended for connection to a patient support surface of the operating table, and a plurality of actuators supporting the head part, each having a first element and a relative thereto comprise a linear adjustable, acting on the head part second element.
  • the plate-shaped head part is connected at its center via a universal joint with the upper end of a guide column.
  • three linear actuators are arranged, with which the head part can be pivoted about the axes defined by the universal joint, so as to make the tilt and tilt adjustment of the patient bearing surface connected to the head.
  • the guide column and the three actuators are arranged on a carrier, which can be adjusted by means of a separate lifting drive in the vertical direction relative to the pedestal. This arrangement of the actuators is relatively complex, requires a relatively large space and allows only a limited adjustment of the head part without the risk of collision of mechanical parts within the operating table column.
  • the invention has the object of providing a surgical table column of the type mentioned in such a way that it allows pivoting of the patient support surface about its longitudinal and / or transverse axis, each with a large tilt angle with low space requirements and low column height.
  • first element of a first actuator is connected to the column part so that the second element of the first actuator is adjustable only in the direction of a vertical first axis
  • the head part with the second Element of the first actuator is pivotally connected about a horizontal second axis and a third axis perpendicular thereto
  • the first element of a second actuator is pivotally connected to the column part about a pivot axis parallel to the second axis
  • the head part with the second element of the second Actuator about an axis parallel to the second axis and pivotally connected to the third axis
  • the first element of a third actuator at a distance from the head part with the second element of the first actuator and the second element of the third actuator with the head part respectively a univ are connected.
  • the head part is supported solely by the actuators. It is not supported directly on the pillar part.
  • the adjustment of the head part about an axis parallel to the second axis corresponding to a tilting movement of the patient support surface about its transverse axis takes place solely by a differently wide extension of the second elements of the first and the second actuator.
  • the occurring change in distance between the first and the second actuator is compensated by a pivoting of the second actuator about its connection axis with the column part.
  • a pivoting of the head part about the third axis corresponding to a Kantungsterrorism the patient support surface about its longitudinal axis is effected solely by a movement of the second element of the third actuator.
  • the proposed solution allows an extremely compact arrangement of the actuators around the pillar part and at the same time large adjustment angle for the inclination and tilt of the patient support surface, without the risk of internal collision of the mechanical parts within the operating table column.
  • the second elements of the first and the second actuator are connected by a rod in each case a joint containing the second axis or an axis parallel to it, wherein the head part is pivotally mounted on the rod forming the third axis.
  • the pivot axes for the adjustment of the head part are practically in the plane of the head part and thus close to the plane of the patient support surface.
  • the distance of the center of gravity of the patient and the bearing surface is kept low by the pivot axes of the head part, whereby also occurring during pivoting of the patient support surface tilting moments can be kept small.
  • the pivot point of the head part and thus the patient support surface is often a relatively large distance below the patient support surface, resulting in tilting and edge of the patient support surface, a large shift in the center of gravity of the patient and the bearing surface with the result that high tilting moments occur.
  • the column part comprises a vertical guide support and a vertically adjustable by means of a lifting drive support frame, with which the first element of the first actuator rigid and the first element of the second actuator about its pivot axis pivotally connected.
  • the actuators are formed by fluid-actuated piston-cylinder assemblies, although other types of linear actuators, such as spindle drives, could be used.
  • the actuators as a hydraulic cylinder is provided in a preferred solution that the second element of the first actuator as a piston rod axially penetrates a cylinder forming the first element of the first actuator, wherein the one, upper end of the piston rod with the head part and the other, opposite end of the piston rod is connected to the first element of the third actuator.
  • the first element of the second actuator is guided at a distance from its pivot axis in a fork of the support frame, so that it can not be moved in the direction of the pivot axis and so that the bearing of this pivot axis is not unnecessarily burdened by the forces acting on the headboard.
  • the pillar part 10 consists of a guide support 22 and a support frame 24, which is guided adjustable in height on the guide support.
  • the height adjustment takes place by means of a lifting drive 26, which is arranged within the guide support 22 ( Figure 5 ) and in the form of a known hydraulic telescopic cylinder is formed with a fixedly connected to the foot part 12 piston rod 28, a first inner cylinder 30 and a second outer cylinder 32 which is connected at its upper end with a horizontal plate member 34 of the support frame 24 , By extending the telescopic cylinder 30, 32 in Direction of the vertical first axis 35, the support frame 24 can be raised.
  • the support frame 24 serves to hold the first and the second actuator 16 and 18.
  • the actuators are also designed as hydraulic cylinders.
  • the first actuator 16 has a first element forming cylinder 36 which is fixed by means of clamps 38 rigidly to the support frame 24.
  • the cylinder 36 is penetrated by a second element of the actuator 16 forming piston rod 40.
  • the upper end of the piston rod 40 is connected to a joint head 42, which is pivotally connected about a horizontal second axis 44 at one end of a connecting rod 46.
  • This connecting rod 46 is rotatably mounted in a head portion 14 passing through bearing 48 about a second axis 44 perpendicular to the third axis 50 and connected at its end opposite the condyle 42 with a condyle 52 which in turn about an axis 44 parallel to the axis 54 at the hinged to the upper end of a piston rod 56, which forms the second element of the second actuator 18.
  • the piston rod 56 receiving, the first element of the second actuator 18 forming cylinder 58 is pivotally mounted with its lower end between two cheeks 60 of the support frame 24 about an axis 44 and 54 parallel to the axis 62. Although the cylinder 58 is thus pivotable about the axis 62, but guided between the cheeks 60 so that it can not perform any movement in the direction of the axis 62.
  • the third actuator 20 is designed as a hydraulic cylinder.
  • the first element of the third actuator 20 forming cylinder 64 is connected to the lower free end of the piston rod 40 of the first actuator 16 via a universal joint 66.
  • the piston rod 68 of the third actuator 20 is at its upper end via a universal joint 70 on the head part 14th hinged ( Figure 3 ).
  • the head part 14 is supported and stabilized at three different points.
  • the head part 14 is raised. If the piston rods 40 and 56 of the first actuator 16 and the second actuator 18 are moved out the same distance, the head part 14 is raised. If the piston rods 40 and 56 extended unequally far, then the head part 14 about the axes 44 and 54 in Figure 5 swung left or right. The occurring shortening of the distance between the two piston rods 40 and 56 of the two actuators 16 and 18 is compensated by a pivoting of the second actuator 18 about its pivot axis 62. If the piston rod 68 of the third actuator 20, which is mitver Administrator during an adjustment of the piston rod 40 of the first actuator 16, retracted or extended, the head part 14 is pivoted about the third pivot axis 50.
  • the solution according to the invention results in an extraordinarily compact arrangement which nevertheless allows large pivoting angles in the inclination and tilting of the head part and thus a patient support surface without the risk of self-collision of the pillar parts. Since the inclination and inclination axes are within the head portion 14 and thus close to the patient support surface, the displacement of the center of gravity of a patient lying on the bearing surface during pivoting of the bearing surface is low, whereby the forces acting on the operating table pillar tilting moments can be kept small.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)

Description

Die Erfindung betrifft eine Operationstischsäule, umfassend einen Säulenfuß, ein mit dem Säulenfuß verbundenes Säulenteil, ein Kopfteil, das zur Verbindung mit einer Patientenlagerfläche des Operationstisches bestimmt ist, und eine Mehrzahl von das Kopfteil tragenden Stellantrieben, die jeweils ein erstes Element und ein relativ zu diesem linear verstellbares, an dem Kopfteil angreifendes zweites Element umfassen.The invention relates to an operating table column comprising a pedestal, a column part connected to the pedestal, a head part intended for connection to a patient support surface of the operating table, and a plurality of actuators supporting the head part, each having a first element and a relative thereto comprise a linear adjustable, acting on the head part second element.

Eine Operationstischsäule der vorstehend genannten Art ist beispielsweise aus der DE 44 23 402 A1 bekannt. Bei der dort beschriebenen Lösung ist das plattenförmige Kopfteil in seiner Mitte über ein Kardangelenk mit dem oberen Ende einer Führungssäule verbunden. Um die Führungssäule herum und in einem Abstand von dieser sind drei Linearstellantriebe angeordnet, mit denen das Kopfteil um die durch das Kardangelenk definierten Achsen verschwenkt werden kann, um so die Neigungs- und Kantungsverstellung der mit dem Kopfteil verbundenen Patientenlagerfläche vorzunehmen. Die Führungssäule und die drei Stellantriebe sind an einem Träger angeordnet, der mittels eines separaten Hubantriebes in vertikaler Richtung relativ zum Säulenfuß verstellt werden kann. Diese Anordnung der Stellantriebe ist relativ aufwändig, benötigt einen relativ großen Raum und lässt nur eine begrenzte Verstellung des Kopfteiles ohne die Gefahr einer Kollision von mechanischen Teilen innerhalb der Operationstischsäule zu.An operating table column of the type mentioned above, for example, from DE 44 23 402 A1 known. In the solution described there, the plate-shaped head part is connected at its center via a universal joint with the upper end of a guide column. Around the guide column and at a distance from this, three linear actuators are arranged, with which the head part can be pivoted about the axes defined by the universal joint, so as to make the tilt and tilt adjustment of the patient bearing surface connected to the head. The guide column and the three actuators are arranged on a carrier, which can be adjusted by means of a separate lifting drive in the vertical direction relative to the pedestal. This arrangement of the actuators is relatively complex, requires a relatively large space and allows only a limited adjustment of the head part without the risk of collision of mechanical parts within the operating table column.

Insbesondere bei minimalinvasiven chirurgischen Eingriffen besteht der Wunsch, den Patienten auf dem Operationstisch in eine Position bringen zu können, welche dem Operateur ein ergonomisch günstiges Arbeiten erlaubt. Dazu sind kombinierte Neigungs- und Kantungsbewegungen der Patientenlagerfläche um große Schwenkwinkel bei geringstmöglicher Säulenhöhe erforderlich.Particularly in the case of minimally invasive surgical interventions, there is a desire to be able to place the patient on the operating table in a position which allows the surgeon to work ergonomically favorably. Combined inclination and tilting movements of the patient support surface by large swivel angles with the lowest possible column height are required for this purpose.

Der Erfindung liegt die Aufgabe zugrunde, eine Operationstischsäule der eingangs genannten Art so auszubilden, dass sie bei geringem Raumbedarf und in niedriger Säulenhöhe ein Verschwenken der Patientenlagerfläche um deren Längs- und/oder Querachse mit jeweils einem großen Schwenkwinkel erlaubt.The invention has the object of providing a surgical table column of the type mentioned in such a way that it allows pivoting of the patient support surface about its longitudinal and / or transverse axis, each with a large tilt angle with low space requirements and low column height.

Diese Aufgabe wird bei einem Operationstisch der eingangs genannten Art dadurch gelöst, dass das erste Element eines ersten Stellantriebes mit dem Säulenteil so verbunden ist, dass das zweite Element des ersten Stellantriebes nur in Richtung einer vertikalen ersten Achse verstellbar ist, wobei das Kopfteil mit dem zweiten Element des ersten Stellantriebes um eine horizontale zweite Achse und eine zu dieser senkrechte dritte Achse schwenkbar verbunden ist, dass das erste Element eines zweiten Stellantriebes mit dem Säulenteil um eine zur zweiten Achse parallele Schwenkachse schwenkbar verbunden ist, wobei das Kopfteil mit dem zweiten Element des zweiten Stellantriebes um eine zur zweiten Achse parallele Achse und um die dritte Achse schwenkbar verbunden ist, und dass das erste Element eines dritten Stellantriebes in einem Abstand von dem Kopfteil mit dem zweiten Element des ersten Stellantriebes und das zweite Element des dritten Stellantriebes mit dem Kopfteil jeweils über ein Universalgelenk verbunden sind.This object is achieved in an operating table of the type mentioned above in that the first element of a first actuator is connected to the column part so that the second element of the first actuator is adjustable only in the direction of a vertical first axis, wherein the head part with the second Element of the first actuator is pivotally connected about a horizontal second axis and a third axis perpendicular thereto, that the first element of a second actuator is pivotally connected to the column part about a pivot axis parallel to the second axis, wherein the head part with the second element of the second Actuator about an axis parallel to the second axis and pivotally connected to the third axis, and that the first element of a third actuator at a distance from the head part with the second element of the first actuator and the second element of the third actuator with the head part respectively a univ are connected.

Bei der erfindungsgemäßen Lösung wird das Kopfteil alleine von den Stellantrieben getragen. Es wird nicht auf dem Säulenteil direkt abgestützt. Die Verstellung des Kopfteils um eine zu der zweiten Achse parallele Achse entsprechend einer Neigungsbewegung der Patientenlagerfläche um ihre Querachse erfolgt allein durch ein unterschiedlich weites Ausfahren der zweiten Elemente des ersten und des zweiten Stellantriebes. Die dabei auftretende Abstandsänderung zwischen dem ersten und dem zweiten Stellantrieb wird durch ein Verschwenken des zweiten Stellantriebes um seine Verbindungsachse mit dem Säulenteil ausgeglichen. Ein Verschwenken des Kopfteiles um die dritte Achse entsprechend einer Kantungsbewegung der Patientenlagerfläche um ihre Längsachse erfolgt allein durch eine Bewegung des zweiten Elementes des dritten Stellantriebes. Dieser ist mit dem beweglichen zweiten Element des ersten Stellantriebes verbunden und benötigt daher keine Führung an dem Säulenteil. Die vorgeschlagene Lösung ermöglicht eine außerordentlich kompakte Anordnung der Stellantriebe um das Säulenteil herum und gleichzeitig große Verstellwinkel für die Neigung und Kantung der Patientenlagerfläche, ohne dass die Gefahr einer inneren Kollision der mechanischen Teile innerhalb der Operationstischsäule besteht.In the solution according to the invention, the head part is supported solely by the actuators. It is not supported directly on the pillar part. The adjustment of the head part about an axis parallel to the second axis corresponding to a tilting movement of the patient support surface about its transverse axis takes place solely by a differently wide extension of the second elements of the first and the second actuator. The occurring change in distance between the first and the second actuator is compensated by a pivoting of the second actuator about its connection axis with the column part. A pivoting of the head part about the third axis corresponding to a Kantungsbewegung the patient support surface about its longitudinal axis is effected solely by a movement of the second element of the third actuator. This is connected to the movable second element of the first actuator and therefore does not require guidance on the column part. The proposed solution allows an extremely compact arrangement of the actuators around the pillar part and at the same time large adjustment angle for the inclination and tilt of the patient support surface, without the risk of internal collision of the mechanical parts within the operating table column.

Vorzugsweise sind die zweiten Elemente des ersten und des zweiten Stellantriebes durch eine Stange in jeweils einem die zweite Achse bzw. eine zu ihr parallele Achse enthaltenden Gelenk miteinander verbunden, wobei das Kopfteil auf der die dritte Achse bildenden Stange schwenkbar gelagert ist. Damit liegen die Schwenkachsen für die Verstellung des Kopfteiles praktisch in der Ebene des Kopfteiles und damit nahe an der Ebene der Patientenlagerfläche. Damit wird der Abstand des Schwerpunktes des Patienten und der Lagerfläche von den Schwenkachsen des Kopfteiles gering gehalten, wodurch auch die beim Verschwenken der Patientenlagerfläche auftretenden Kippmomente klein gehalten werden können. Bei den herkömmlichen Lösungen dagegen liegt der Schwenkpunkt des Kopfteiles und damit der Patientenlagerfläche häufig in einem relativ großen Abstand unterhalb der Patientenlagerfläche, wodurch sich beim Neigen und Kanten der Patientenlagerfläche eine große Verschiebung des Schwerpunktes des Patienten und der Lagerfläche mit der Folge ergibt, dass hohe Kippmomente auftreten.Preferably, the second elements of the first and the second actuator are connected by a rod in each case a joint containing the second axis or an axis parallel to it, wherein the head part is pivotally mounted on the rod forming the third axis. Thus, the pivot axes for the adjustment of the head part are practically in the plane of the head part and thus close to the plane of the patient support surface. Thus, the distance of the center of gravity of the patient and the bearing surface is kept low by the pivot axes of the head part, whereby also occurring during pivoting of the patient support surface tilting moments can be kept small. In the conventional solutions, however, the pivot point of the head part and thus the patient support surface is often a relatively large distance below the patient support surface, resulting in tilting and edge of the patient support surface, a large shift in the center of gravity of the patient and the bearing surface with the result that high tilting moments occur.

Bei einer bevorzugten Ausführungsform der Erfindung umfasst das Säulenteil eine vertikale Führungsstütze und einen an dieser mittels eines Hubantriebes vertikal verstellbaren Tragrahmen, mit dem das erste Element des ersten Stellantriebes starr und das erste Element des zweiten Stellantriebes um seine Schwenkachse schwenkbar verbunden ist. Damit kann eine Höhenverstellung des Kopfteiles über einen großen Verfahrweg erfolgen, auch wenn das Kopfteil bereits allein durch ein gleichmäßiges Verfahren der zweiten Elemente des ersten und des zweiten Stellantriebes in der Höhe verstellt werden kann.In a preferred embodiment of the invention, the column part comprises a vertical guide support and a vertically adjustable by means of a lifting drive support frame, with which the first element of the first actuator rigid and the first element of the second actuator about its pivot axis pivotally connected. Thus, a height adjustment of the head part can be made over a large travel, even if the head part can be adjusted in height alone by a uniform method of the second elements of the first and second actuator.

Vorzugsweise sind die Stellantriebe von druckmittelbetätigten Kolbenzylinderanordnungen gebildet, auch wenn andere Arten von Linearstellvorrichtungen, wie beispielsweise Spindeltriebe, eingesetzt werden könnten.Preferably, the actuators are formed by fluid-actuated piston-cylinder assemblies, although other types of linear actuators, such as spindle drives, could be used.

Bei einer Ausbildung der Stellantriebe als Hydraulikzylinder ist bei einer bevorzugten Lösung vorgesehen, dass das zweite Element des ersten Stellantriebes als Kolbenstange einen das erste Element des ersten Stellantriebes bildenden Zylinder axial durchsetzt, wobei das eine, obere Ende der Kolbenstange mit dem Kopfteil und das andere, entgegengesetzte Ende der Kolbenstange mit dem ersten Element des dritten Stellantriebes verbunden ist.In a design of the actuators as a hydraulic cylinder is provided in a preferred solution that the second element of the first actuator as a piston rod axially penetrates a cylinder forming the first element of the first actuator, wherein the one, upper end of the piston rod with the head part and the other, opposite end of the piston rod is connected to the first element of the third actuator.

Um die nötige Steifigkeit und Betriebssicherheit der vorstehend beschriebenen Verstelleinrichtung zu gewährleisten, ist es zweckmäßig, wenn das erste Element des zweiten Stellantriebes in einem Abstand von seiner Schwenkachse in einer Gabel des Tragrahmens geführt ist, so dass es in Richtung der Schwenkachse nicht bewegt werden kann und damit auch das Lager dieser Schwenkachse nicht durch die am Kopfteil angreifenden Kräfte unnötig belastet wird.In order to ensure the necessary rigidity and reliability of the adjusting device described above, it is expedient if the first element of the second actuator is guided at a distance from its pivot axis in a fork of the support frame, so that it can not be moved in the direction of the pivot axis and so that the bearing of this pivot axis is not unnecessarily burdened by the forces acting on the headboard.

Weitere Vorteile und Merkmale der Erfindung ergeben sich aus der folgenden Beschreibung, welche in Verbindung mit den beigefügten Zeichnungen die Erfindung anhand eines Ausführungsbeispiels erläutert. Es zeigen:

Fig.1
eine Seitenansicht der erfindungsgemäßen Operationstischsäule ohne Verkleidungselemente in Richtung des Pfeiles A in Fig.2,
Fig.2
eine Draufsicht auf die in Fig.1 dargestellte Operationstischsäule ohne Säulenfuß,
Fig.3 und 4
jeweils eine Seitenansicht der Operationstischsäule in Richtung der Pfeile B bzw. C in Fig.2 und
Fig.5
einen Schnitt durch die Operationstischsäule entlang der Linie V-V in Fig.2.
  • Die in den Figuren dargestellte Operationstischsäule umfasst ein allgemein mit 10 bezeichnetes Säulenteil, einen lediglich schematisch angedeuteten Säulenfuß 12, ein Kopfteil 14, das zur Verbindung mit einer nicht dargestellten Patientenlagerfläche bestimmt ist, sowie einen ersten Stellantrieb 16, einen zweiten Stellantrieb 18 und einen dritten Stellantriebe 20, die gemeinsam das Kopfteil 14 tragen.
Further advantages and features of the invention will become apparent from the following description, which explains the invention with reference to an embodiment in conjunction with the accompanying drawings. Show it:
Fig.1
a side view of the operating table column according to the invention without cladding elements in the direction of arrow A in Fig.2 .
Fig.2
a top view of the in Fig.1 illustrated operating column without pedestal,
3 and 4
in each case a side view of the operating table column in the direction of arrows B and C in Fig.2 and
Figure 5
a section through the operating table column along the line VV in Fig.2 ,
  • The operating table column shown in the figures comprises a generally designated 10 column part, a merely schematically indicated pillar base 12, a head part 14 which is intended for connection to a patient support surface, not shown, and a first actuator 16, a second actuator 18 and a third actuators 20, which together carry the head part 14.

Das Säulenteil 10 besteht aus einer Führungsstütze 22 und einem Tragrahmen 24, der an der Führungsstütze höhenverstellbar geführt ist. Die Höhenverstellung erfolgt mittels eines Hubantriebes 26, der innerhalb der Führungsstütze 22 angeordnet ist (Fig.5) und in Form eines an sich bekannten hydraulischen Teleskopzylinders ausgebildet ist mit einer fest mit dem Fußteil 12 verbundenen Kolbenstange 28, einem ersten inneren Zylinder 30 und einem zweiten äußeren Zylinder 32, der an seinem oberen Ende mit einem horizontalen Plattenteil 34 des Tragrahmens 24 verbunden ist. Durch Ausfahren der Teleskopzylinder 30, 32 in Richtung der vertikalen ersten Achse 35 kann der Tragrahmen 24 angehoben werden.The pillar part 10 consists of a guide support 22 and a support frame 24, which is guided adjustable in height on the guide support. The height adjustment takes place by means of a lifting drive 26, which is arranged within the guide support 22 ( Figure 5 ) and in the form of a known hydraulic telescopic cylinder is formed with a fixedly connected to the foot part 12 piston rod 28, a first inner cylinder 30 and a second outer cylinder 32 which is connected at its upper end with a horizontal plate member 34 of the support frame 24 , By extending the telescopic cylinder 30, 32 in Direction of the vertical first axis 35, the support frame 24 can be raised.

Der Tragrahmen 24 dient zur Halterung des ersten und des zweiten Stellantriebes 16 bzw. 18. Die Stellantriebe sind ebenfalls als Hydraulikzylinder ausgebildet. Der erste Stellantrieb 16 hat einen sein erstes Element bildenden Zylinder 36, der mit Hilfe von Schellen 38 starr an dem Tragrahmen 24 befestigt ist. Der Zylinder 36 wird von einer das zweite Element des Stellantriebes 16 bildenden Kolbenstange 40 durchsetzt. Das obere Ende der Kolbenstange 40 ist mit einem Gelenkkopf 42 verbunden, der um eine horizontale zweite Achse 44 schwenkbar an dem einen Ende einer Verbindungsstange 46 angelenkt ist. Diese Verbindungsstange 46 ist in einem das Kopfteil 14 durchsetzenden Lager 48 um eine zur zweiten Achse 44 senkrechte dritte Achse 50 drehbar gelagert und an ihrem dem Gelenkkopf 42 entgegengesetzten Ende mit einem Gelenkkopf 52 verbunden, der seinerseits um eine zur Achse 44 parallele Achse 54 an dem oberen Ende einer Kolbenstange 56 angelenkt ist, welche das zweite Element des zweiten Stellantriebes 18 bildet. Der die Kolbenstange 56 aufnehmende, das erste Element des zweiten Stellantriebes 18 bildende Zylinder 58 ist mit seinem unteren Ende zwischen zwei Wangen 60 des Tragrahmens 24 um eine zu den Achsen 44 und 54 parallele Achse 62 schwenkbar gelagert. Der Zylinder 58 ist damit zwar um die Achse 62 verschwenkbar, jedoch zwischen den Wangen 60 so geführt, dass er in Richtung der Achse 62 keine Bewegung ausführen kann.The support frame 24 serves to hold the first and the second actuator 16 and 18. The actuators are also designed as hydraulic cylinders. The first actuator 16 has a first element forming cylinder 36 which is fixed by means of clamps 38 rigidly to the support frame 24. The cylinder 36 is penetrated by a second element of the actuator 16 forming piston rod 40. The upper end of the piston rod 40 is connected to a joint head 42, which is pivotally connected about a horizontal second axis 44 at one end of a connecting rod 46. This connecting rod 46 is rotatably mounted in a head portion 14 passing through bearing 48 about a second axis 44 perpendicular to the third axis 50 and connected at its end opposite the condyle 42 with a condyle 52 which in turn about an axis 44 parallel to the axis 54 at the hinged to the upper end of a piston rod 56, which forms the second element of the second actuator 18. The piston rod 56 receiving, the first element of the second actuator 18 forming cylinder 58 is pivotally mounted with its lower end between two cheeks 60 of the support frame 24 about an axis 44 and 54 parallel to the axis 62. Although the cylinder 58 is thus pivotable about the axis 62, but guided between the cheeks 60 so that it can not perform any movement in the direction of the axis 62.

Auch der dritte Stellantrieb 20 ist als Hydraulikzylinder ausgeführt. Der das erste Element des dritten Stellantriebes 20 bildende Zylinder 64 ist mit dem unteren freien Ende der Kolbenstange 40 des ersten Stellantriebes 16 über ein Universalgelenk 66 verbunden. Die Kolbenstange 68 des dritten Stellantriebes 20 ist mit ihrem oberen Ende über ein Universalgelenk 70 an dem Kopfteil 14 angelenkt (Fig.3). Damit wird das Kopfteil 14 an drei verschiedenen Punkten unterstützt und stabilisiert.Also, the third actuator 20 is designed as a hydraulic cylinder. The first element of the third actuator 20 forming cylinder 64 is connected to the lower free end of the piston rod 40 of the first actuator 16 via a universal joint 66. The piston rod 68 of the third actuator 20 is at its upper end via a universal joint 70 on the head part 14th hinged ( Figure 3 ). Thus, the head part 14 is supported and stabilized at three different points.

Werden die Kolbenstangen 40 und 56 des ersten Stellantriebes 16 und des zweiten Stellantriebes 18 gemeinsam gleich weit ausgefahren, so wird das Kopfteil 14 angehoben. Werden die Kolbenstangen 40 und 56 ungleich weit ausgefahren, so wird das Kopfteil 14 um die Achsen 44 und 54 in Fig.5 nach links oder rechts verschwenkt. Die dabei auftretende Verkürzung des Abstandes zwischen den beiden Kolbenstangen 40 und 56 der beiden Stellantriebe 16 und 18 wird durch ein Verschwenken des zweiten Stellantriebes 18 um seine Schwenkachse 62 ausgeglichen. Wird die Kolbenstange 68 des dritten Stellantriebes 20, der bei einer Verstellung der Kolbenstange 40 des ersten Stellantriebes 16 mitverstellt wird, eingefahren oder ausgefahren, so wird das Kopfteil 14 um die dritte Schwenkachse 50 verschwenkt.If the piston rods 40 and 56 of the first actuator 16 and the second actuator 18 are moved out the same distance, the head part 14 is raised. If the piston rods 40 and 56 extended unequally far, then the head part 14 about the axes 44 and 54 in Figure 5 swung left or right. The occurring shortening of the distance between the two piston rods 40 and 56 of the two actuators 16 and 18 is compensated by a pivoting of the second actuator 18 about its pivot axis 62. If the piston rod 68 of the third actuator 20, which is mitverstellt during an adjustment of the piston rod 40 of the first actuator 16, retracted or extended, the head part 14 is pivoted about the third pivot axis 50.

Wie die vorstehende Beschreibung und die Figuren zeigen, ergibt sich mit der erfindungsgemäßen Lösung eine außerordentlich kompakte Anordnung, die trotzdem große Schwenkwinkel bei der Neigung und Kantung des Kopfteils und damit einer Patientenlagerfläche ermöglicht, ohne dass die Gefahr einer Selbstkollision der Säulenteile besteht. Da die Neigungs- und Kantungsachsen innerhalb des Kopfteils 14 und damit dicht unter der Patientenlagerfläche liegen, ist die Verschiebung des Schwerpunktes eines auf der Lagerfläche liegenden Patienten beim Verschwenken der Lagerfläche gering, wodurch auch die auf die OP-Tischsäule wirkenden Kippmomente klein gehalten werden können.As the above description and the figures show, the solution according to the invention results in an extraordinarily compact arrangement which nevertheless allows large pivoting angles in the inclination and tilting of the head part and thus a patient support surface without the risk of self-collision of the pillar parts. Since the inclination and inclination axes are within the head portion 14 and thus close to the patient support surface, the displacement of the center of gravity of a patient lying on the bearing surface during pivoting of the bearing surface is low, whereby the forces acting on the operating table pillar tilting moments can be kept small.

Claims (6)

  1. An operating table column comprising a column foot (12), a column part (10) connected to the column foot (12), a head part (14) that is intended for the connection to a patient support surface of the operating table, and a plurality of actuating drives (16, 18, 20) that carry the head part (14) and that each comprise a first element (36, 58, 64) and a second element (40, 56, 68) that can be linearly adjusted relative to the first element and that act upon the head part (14), wherein the first element (36) of a first actuating drive (16) is connected to the column part (10) in such manner that the second element (40) of the first actuating drive (16) can only be adjusted in the direction of a vertical first axis (35), whereby the head part (14) is pivotably connected to the second element (40) of the first actuating drive about a horizontal second axis (44) and about a third axis (50) perpendicular to the latter axis, that the first element (58) of a second actuating drive (18) is pivotably connected to the column part (10) about a pivot axis (62) parallel to the second axis (44), whereby the head part (14) is pivotably connected to the second element (56) of the second actuating drive (18) about an axis (54) parallel to the second axis (44) and about the third axis (50), and that the first element (64) of a third actuating drive (20) is connected at a distance from the head part (14) to the second element (40) of the first actuating drive (16) and the second element (68) of the third actuating drive (20) is connected to the head part (14) via a respective universal joint (66, 70).
  2. The operating table column according to Claim 1, characterized in that the second elements (40, 56) of the first and of the second actuating drives (16, 18) are connected to one another by a rod (46) in an articulation (42, 52) containing the second axis (44) or an axis (54) parallel to the second axis, and that the head part (14) is pivotably supported on the rod (46) forming the third axis (50).
  3. The operating table column according to Claim 1 or 2, characterized in that the column part (10) comprises a vertical guide support (22) and a carrier frame (24) that can be adjusted vertically on the latter by a lifting drive (26), to which carrier frame the first element (36) of the first actuating drive (16) is rigidly connected and the first element (58) of the second actuating drive is connected in such a manner that it can pivot about its pivot axis (62).
  4. The operating table column according to one of Claims 1 to 3, characterized in that the actuating drives (16, 18, 20) are formed by piston cylinder arrangements actuated by pressure agent.
  5. The operating table column according to Claim 4, characterized in that the second element (40) of the first actuating drive (16) extends as a piston rod axially through a cylinder forming the first element (36) of the first actuating drive (16), whereby the one end of the piston rod is connected to the head part (14) and the other end of the piston rod is connected to the first element (64) of the third actuating drive (20).
  6. The operating table column according to one of Claims 3 to 5, characterized in that the first element (58) of the second actuating drive (18) is guided in a fork (60, 60) of the carrier frame (24) at a distance from its pivot axis (62).
EP12154695.6A 2011-02-10 2012-02-09 Operating table column Active EP2486908B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12154695T PL2486908T3 (en) 2011-02-10 2012-02-09 Operating table column

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102011000628A DE102011000628A1 (en) 2011-02-10 2011-02-10 Operating table column

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EP2486908A2 EP2486908A2 (en) 2012-08-15
EP2486908A3 EP2486908A3 (en) 2013-05-01
EP2486908B1 true EP2486908B1 (en) 2014-05-21

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US (1) US8800983B2 (en)
EP (1) EP2486908B1 (en)
JP (1) JP5314168B2 (en)
CN (1) CN102631271B (en)
DE (1) DE102011000628A1 (en)
ES (1) ES2476371T3 (en)
PL (1) PL2486908T3 (en)
RU (1) RU2490003C1 (en)

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CN105621312B (en) * 2016-02-22 2018-04-17 刘智勇 A kind of medical stage apparatus and its method of adjustment for reducing contact wear
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Publication number Publication date
CN102631271B (en) 2014-10-08
JP5314168B2 (en) 2013-10-16
RU2490003C1 (en) 2013-08-20
EP2486908A3 (en) 2013-05-01
DE102011000628A1 (en) 2012-08-16
PL2486908T3 (en) 2014-10-31
US20120216350A1 (en) 2012-08-30
ES2476371T3 (en) 2014-07-14
EP2486908A2 (en) 2012-08-15
CN102631271A (en) 2012-08-15
US8800983B2 (en) 2014-08-12
JP2012166020A (en) 2012-09-06

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