EP1562530A2 - Headrest adjustable by means of a motor - Google Patents

Headrest adjustable by means of a motor

Info

Publication number
EP1562530A2
EP1562530A2 EP03789027A EP03789027A EP1562530A2 EP 1562530 A2 EP1562530 A2 EP 1562530A2 EP 03789027 A EP03789027 A EP 03789027A EP 03789027 A EP03789027 A EP 03789027A EP 1562530 A2 EP1562530 A2 EP 1562530A2
Authority
EP
European Patent Office
Prior art keywords
head
support bar
rollers
motor
support
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.)
Granted
Application number
EP03789027A
Other languages
German (de)
French (fr)
Other versions
EP1562530B1 (en
Inventor
Guido Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Maquet GmbH
Original Assignee
Maquet GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Maquet GmbH filed Critical Maquet GmbH
Publication of EP1562530A2 publication Critical patent/EP1562530A2/en
Application granted granted Critical
Publication of EP1562530B1 publication Critical patent/EP1562530B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • A61G13/10—Parts, details or accessories
    • A61G13/12—Rests specially adapted therefor; Arrangements of patient-supporting surfaces
    • A61G13/1205—Rests specially adapted therefor; Arrangements of patient-supporting surfaces for specific parts of the body
    • A61G13/121—Head or neck
    • 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
    • A61G15/00—Operating chairs; Dental chairs; Accessories specially adapted therefor, e.g. work stands
    • A61G15/10—Parts, details or accessories
    • A61G15/12—Rests specially adapted therefor, e.g. for the head or feet
    • A61G15/125—Head-rests

Definitions

  • the invention relates to a motor-adjustable headrest for operating tables, comprising a head plate, which is arranged at one end of a curved support beam, which is guided in a plane perpendicular to the axis of curvature on a support that can be connected to the operating table and is adjustable between three rollers that are spaced in the direction of adjustment from each other.
  • Existing headrest systems can be divided into headrests that can be adjusted manually in their position and those with the support of the lifting movement by external energy, e.g. an electric motor or a hydraulic drive.
  • external energy e.g. an electric motor or a hydraulic drive.
  • Particularly simple designs are limited to a series of links which can be rotated relative to one another and which are braced against one another when the correct position has been found. With these simple systems, the load on the head plate must be borne by the operator during the adjustment procedure, which requires the use of both hands. Such an arrangement is unsuitable for intraoperative adjustments.
  • the vertical lifting capacity can also be provided by external energy.
  • self-locking can be dispensed with so that the weight load acts directly on the actuators.
  • the head is mounted on an extension arm, which is connected to the fixed points in the patient's back area via two parallel links. As a result, the head describes a purely translatory path that corresponds to an arc.
  • the head is picked up on a cantilever, which is rotatably mounted at a point below the patient and therefore describes a circular path when it is adjusted.
  • the greatest possible boom length is aimed at in order to achieve an approximately linear stroke movement of the head.
  • the support bar is formed by a circular ring segment which is guided by three bearing rollers and is driven by a toothing on the circular ring segment.
  • This guide makes it possible to move the center of the rotary movement of the head into the area above the patient support surface.
  • All the known headrest systems have in common that the adjustment movement is realized by very simple forms of movement which describe quasi-linear or circular paths in consideration of mechanical boundary conditions. However, these pathways do not correspond to the human anatomy, so that compensatory movements of the head must take place. If this compensating movement is prevented, for example by storing the head in a spherical cap, the patient is subjected to compression or extension depending on the direction of adjustment. An awake patient will briefly raise his head under the resulting pain and thus bring about a balance. However, a relaxed patient does not have this option and remains in the current state of tension.
  • the invention has for its object to provide a motor-adjustable headrest of the type mentioned so that the head of a patient lying on the patient support surface of the operating table can follow an anatomically correct path when lifting and lowering the head plate.
  • raceways formed on the support beam for the rollers are shaped so that their current centers of curvature in any position of the support beam coincide with the current center of rotation of the head movement when lifting and lowering a patient's head resting on the head plate.
  • the solution according to the invention is based on an analysis of the anatomically correct movement of the head and the knowledge that the spine connecting the head to the body can be regarded as a link chain for the technical implementation of the headrest system.
  • the spine thus corresponds to the stringing together of individual links which are rotatably connected to one another at appropriate intervals and each of which allows a certain amount of twisting, the resistance which is opposed to twisting increasing with increasing angle of twist.
  • the straight, straight position should be chosen as the central position and starting point for the following considerations.
  • In the middle position are all limbs of the affected area arranged in a straight line. If the head is raised from this position, this will initially lead to a rotary movement in the rotary member furthest away from the head, since there the force acts on the largest lever and causes the smallest twist. With increasing rotation, however, the tension in this rotating member exceeds that of the rotating member adjacent to the head, so that it is now twisted. Thus, the center of the rotational movement progresses towards the head as the head is lifted from the furthest point.
  • the curve that describes the link chain corresponds to a spiral that begins to curve upwards in the horizontal direction with a decreasing radius.
  • the head For the movement of the head, this means that, starting from a vertical stroke movement from the central position, the head ideally follows a spiral of increasing curvature, the instantaneous poles or centers of which on the described center point spiral move from the most distant point to the start of the stroke movement in the direction of the head ,
  • the continuous movement of the pivot point on the center spiral can also be represented in discrete rotations around defined pivot points, the pivot points being on the center spiral.
  • the trajectory of the head is then represented by a series of arcs that connect tangentially to achieve a constant movement and whose radii of curvature become smaller and smaller from the central position towards the end position.
  • the rotational movement of the head around a fulcrum on the center spiral described above is represented by a rolling movement of the rollers on the raceways, the respective instantaneous pole or center of curvature of which coincides with this fulcrum of the head.
  • the third roller prevents lifting of the support ring from the two mentioned rollers in the event of changing load directions and is preferably biased towards the support spar to compensate for manufacturing inaccuracies.
  • the carrier is designed in the form of a housing which can be rigidly connected to the operating table, in which the rollers are mounted and the support bar is guided.
  • the support beam can be driven in different ways.
  • the support bar can carry a toothed track in which a pinion driven by a motor engages.
  • the toothed track is formed on a side surface of the same which is perpendicular to the axis of curvature of the support beam, the drive device comprising the motor and the pinion being mounted in the carrier so as to be movable about an axis pivotable to the side surface.
  • the drive device comprises a threaded spindle rotatable by means of a motor, which is supported on the carrier and engages in a nut movably mounted on the support bar.
  • the drive device comprises a tension member which is attached to or near the two ends of the support bar and is guided via a drive wheel which can be driven by a motor.
  • the tension member can be a chain or a toothed belt, so that a slip-free adjustment of the support bar is made possible.
  • the drive device could also be formed by a hydraulic cylinder which engages the support bar and is supported on a table-fixed support.
  • This embodiment is particularly suitable for a headrest that is permanently connected to a hydraulically adjustable operating table.
  • FIG. 2 is a graphical representation to explain the technical
  • FIG. 3 is a schematic representation of the overall concept for the
  • FIG. 4 shows an overall perspective view of the motor-adjustable headrest according to the invention
  • FIG. 5 shows a representation of the headrest approximately corresponding to FIG. 4, with part of the housing being removed
  • 6 shows a representation of the headrest corresponding to FIG. 5, but viewed from the opposite side
  • Figure 7 is a perspective view of the Holmes and
  • Figures 1a-c show the curvature of the spine during the up and down movement of the head of a patient lying on his back.
  • 10 denotes the patient support surface of an operating table on which a head plate 12 is adjustably arranged.
  • the head 14 of a patient 16 lying on the patient support surface 10 rests on the head plate 12.
  • 18 denotes the center of gravity of the head.
  • FIG. 1b shows the patient 16 in its extended position, the head plate 12 being flush with the patient support surface 10 and the spine 20 of the patient forming a straight line. If the patient's head 14 is raised by means of the head plate 12, the spine curves according to the path 20 ' in FIG. 1a. If the head 14 is moved downward by lowering the head plate 12, the spine follows the path 20 "in FIG. 1c. It can be seen that the spine does not make a pivoting movement about a fixed center of rotation and that the paths 20 ' and 20 " are curved differently are.
  • the head plate 12 can be adjusted so that the center of gravity 18 of the head 14 follows its anatomically correct path when the head plate 12 is raised and lowered, which is designated by 22 in FIGS. 2 and 3 ,
  • the head plate 12 is attached to one end of a support beam 24 which is guided between 3 rollers 26, 28 and 30 in the plane of the drawing.
  • the rollers 26, 28, 30 lie against raceways 32, 34 and 36, which are formed on the support beam 24.
  • raceways 32, 34, 36 are made up of individual Assembled sections that are found as is schematically explained in Figure 2.
  • FIG. 2 shows a specific position of the head or a point in time of the actuating movement of the head at which the center of gravity of the head 18 ′ is located on the path of movement 22 shown in FIG. 2.
  • the associated center of rotation in the spine ie on the track 20 ′′, is located at the point denoted by Z mom .
  • the center of gravity of the head 18 is rigidly connected to the support bar 24 in FIG. 3 via the head plate.
  • the rollers 26, 28, 30 each lie in one Point 26 ', 28', 30 'on the associated raceway 32, 34, 36.
  • the points 26 ' , 28 ', 30' are also points of the support bar 24 and are thus rigidly connected to the center of gravity 18.
  • FIGS. 4 to 7 now show the technical implementation of the headrest according to the invention in a schematic representation using a preferred exemplary embodiment.
  • a housing generally designated 38, which essentially consists of two mutually parallel plates 40, 42 which are held at a distance from one another by bolts 44 and are connected to one another.
  • the rollers 26, 28 and 30 are rotatably mounted about axes perpendicular to the plates 40 and 42, between which the support beam 24 is guided.
  • 6 shows the raceways 32, 34 and 36 formed on the support bar 24 for the rollers 26, 28 and 30, respectively.
  • the support bar 24 carries at one end a strip 46 on which the bars not shown in FIGS. 4 to 7 are shown Head plate 12 can be attached.
  • a handle 48 is attached to this end of the support beam 24, with which the support beam can be moved by hand.
  • a cover plate 50 which can be seen in FIG. 6 and which is intended to prevent objects, in particular the hair of a patient, from being caught by the roller 28 and being pulled into the housing 38.
  • the support roller 30 is biased by a spring 52 towards the raceway 36.
  • the drive for the adjustment of the support beam 24 is explained in FIG. 7.
  • the support bar 24 carries on its one long side a toothed track 54 into which a toothed pinion 56 engages, which is driven by a motor 60 via a worm gear 58.
  • the drive device or assembly consisting of the motor 60, the worm gear 58 and the pinion 56 is mounted in a plate 62 which is screwed to the outside of the housing plate 42 by means of a turntable 64 so as to be pivotable about an axis 66, so that the pinion 56 is the tooth trace 54 can follow changing direction of the teeth during the adjustment of the support beam 24.
  • the drive device is covered by a cover, not shown, which is fastened to the plate 62.
  • the housing 38 can be attached to the frame of an operating table or the patient support surface 10 with the aid of a support (not shown).

Abstract

Disclosed is a headrest for operating tables, which is adjustable by means of a motor and comprises a head plate (12) that is disposed at one end of a curved support shaft (24). Said support shaft (24) is guided in an adjustable manner between three rollers (26, 28, 30) along a support which can be connected to the operating table on a plane that runs perpendicular to the bending axis, said rollers (26, 28, 30) being located at a distance from each other in the direction of adjustment. The tracks (32, 34, 36) for the rollers (26, 28, 30), which are embodied on the support shaft (24), are formed such that the momentary bending centers thereof coincide with the momentary center of rotation of the head movement during raising and lowering of a patient's head (14) that lies on the head plate (12) in each position of the support shaft (24).

Description

Motorisch verstellbare Kopfstütze Motorized headrest
Die Erfindung betrifft eine motorisch verstellbare Kopfstütze für Operationstische, umfassend eine Kopfplatte, die an einem Ende eines gekrümmten Stützholmes angeordnet ist, der in einer zur Krümmungsachse senkrechten Ebene an einem mit dem Operationstisch verbindbaren Träger zwischen drei Laufrollen verstellbar geführt ist, die in Stellrichtung einen Abstand voneinander haben.The invention relates to a motor-adjustable headrest for operating tables, comprising a head plate, which is arranged at one end of a curved support beam, which is guided in a plane perpendicular to the axis of curvature on a support that can be connected to the operating table and is adjustable between three rollers that are spaced in the direction of adjustment from each other.
Bestehende Kopfstützensysteme lassen sich unterteilen in Kopfstützen, die sich manuell in ihrer Position verstellen lassen und solche mit Unterstützung der Hubbewegung durch Fremdenergie, wie z.B. einen Elektromotor oder einen hydraulischen Antrieb. Besonders einfache Ausführungen beschränken sich auf eine Aneinanderreihung mehrerer zueinander drehbarer Glieder, die gegeneinander verspannt werden, wenn die richtige Position gefunden ist. Bei diesen einfachen Systemen muß während der Einstellprozedur die Last der Kopfplatte von der bedienenden Person getragen werden, was den Einsatz beider Hände erfordert. Eine solche Anordnung ist für intraoperative Verstellungen ungeeignet.Existing headrest systems can be divided into headrests that can be adjusted manually in their position and those with the support of the lifting movement by external energy, e.g. an electric motor or a hydraulic drive. Particularly simple designs are limited to a series of links which can be rotated relative to one another and which are braced against one another when the correct position has been found. With these simple systems, the load on the head plate must be borne by the operator during the adjustment procedure, which requires the use of both hands. Such an arrangement is unsuitable for intraoperative adjustments.
Manuelle Systeme, die auch ein Verstellen der Kopfplatte während des Eingriffes ermöglichen, unterstützen die Last kontinuierlich. Die vertikale Hubleistung wird in diesen Fällen durch ein mechanisches Getriebe eingeleitet, das einerseits kleine Verstellkräfte gewährleistet, andererseits von der Lastseite her selbsthemmend ausgeführt ist, um ein unerwünschtes Absinken des Kopfes zu verhindern. Zusätzliche Freiheitsgrade der Kopfplatte, wie z.B. laterale (waagerechte) Verschiebungen oder laterale Schwenkbewegungen sind durch einfache Klemmverbindungen arretierbar, da ihre Verstellung nahezu leistungsfrei erfolgen kann.Manual systems that also allow the head plate to be adjusted during the intervention continuously support the load. In these cases, the vertical lifting capacity is initiated by a mechanical gearbox, which on the one hand ensures small adjustment forces, and on the other hand is designed to be self-locking on the load side in order to prevent the head from dropping undesirably. Additional degrees of freedom of the head plate, such as lateral (horizontal) displacements or lateral swiveling movements are easy Clamp connections can be locked because their adjustment can be done almost without power.
Die vertikale Hubleistung kann, wie bereits erwähnt, auch durch Fremdenergie erbracht werden. Je nach gewähltem System kann dabei auf die Selbsthemmung verzichtet werden, so daß die Gewichtslast direkt auf die Aktorik wirkt.As already mentioned, the vertical lifting capacity can also be provided by external energy. Depending on the system selected, self-locking can be dispensed with so that the weight load acts directly on the actuators.
Bei den meisten bekannten Kopfstützensystemen kann die Bahn der Hubbewegung auf folgende Formen zurückgeführt werden:In most known headrest systems, the path of the lifting movement can be traced back to the following forms:
Paralleloαrammführunq:Paralleloαrammführunq:
Der Kopf ist auf einem Ausleger gelagert, der über zwei parallele Lenker an die Fixpunkte im Rückenbereich des Patienten angebunden ist. Dadurch beschreibt der Kopf eine rein translatorische Bahn, die einem Kreisbogen entspricht.The head is mounted on an extension arm, which is connected to the fixed points in the patient's back area via two parallel links. As a result, the head describes a purely translatory path that corresponds to an arc.
Drehführunα:Drehführunα:
Der Kopf wird auf einem Ausleger aufgenommen, der in einem Punkt unterhalb des Patienten drehbar gelagert ist und daher bei seiner Verstellung eine Kreisbahn beschreibt. Dabei wird eine möglichst große Auslegerlänge angestrebt, um eine annähernd lineare Hubbewegung des Kopfes zu realisieren.The head is picked up on a cantilever, which is rotatably mounted at a point below the patient and therefore describes a circular path when it is adjusted. The greatest possible boom length is aimed at in order to achieve an approximately linear stroke movement of the head.
Haslinαer-Kopfstütze:Haslinαer Headrest:
Sie entspricht der eingangs beschriebenen Kopfstütze. Um eine annähernd anatomisch korrekte Verstellbewegung des Kopfes zu erzeugen, ist der Stützholm von einem Kreisringsegment gebildet, das durch drei Lagerrollen geführt wird und über eine Verzahnung an dem Kreisringsegment angetrieben wird. Durch diese Führung ist es möglich, das Zentrum der Drehbewegung des Kopfes in den Bereich oberhalb der Patientenlagerfläche zu verlegen. All den bekannten Kopfstützensystemen ist gemeinsam, daß die Verstellbewegung durch sehr einfache Bewegungsformen realisiert werden, die in Rücksicht auf mechanische Randbedingungen quasilineare oder kreisförmige Bahnen beschreiben. Diese Bahnen entsprechen jedoch nicht der menschlichen Anatomie, so daß Ausgleichsbewegungen des Kopfes stattfinden müssen. Wird diese Ausgleichsbewegung unterbunden, z.B. durch Lagerung des Kopfes in einer Kopfkalotte, so wird der Patient je nach Stellrichtung auf Stauchung oder Streckung beansprucht. Ein wacher Patient wird unter dem entstehenden Schmerz kurzzeitig den Kopf anheben und somit einen Ausgleich herbeiführen. Ein relaxierter Patient hat diese Möglichkeit jedoch nicht und bleibt in der jeweiligen Spannungslage.It corresponds to the headrest described at the beginning. In order to produce an approximately anatomically correct adjustment movement of the head, the support bar is formed by a circular ring segment which is guided by three bearing rollers and is driven by a toothing on the circular ring segment. This guide makes it possible to move the center of the rotary movement of the head into the area above the patient support surface. All the known headrest systems have in common that the adjustment movement is realized by very simple forms of movement which describe quasi-linear or circular paths in consideration of mechanical boundary conditions. However, these pathways do not correspond to the human anatomy, so that compensatory movements of the head must take place. If this compensating movement is prevented, for example by storing the head in a spherical cap, the patient is subjected to compression or extension depending on the direction of adjustment. An awake patient will briefly raise his head under the resulting pain and thus bring about a balance. However, a relaxed patient does not have this option and remains in the current state of tension.
Der Erfindung liegt die Aufgabe zugrunde, eine motorisch verstellbare Kopfstütze der eingangs genannten Art so auszubilden, daß der Kopf eines auf der Patientenlagerfläche des Operationstisches liegenden Patienten beim Heben und Senken der Kopfplatte einer anatomisch korrekten Bahn folgen kann.The invention has for its object to provide a motor-adjustable headrest of the type mentioned so that the head of a patient lying on the patient support surface of the operating table can follow an anatomically correct path when lifting and lowering the head plate.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß die an dem Stützholm ausgebildeten Laufbahnen für die Laufrollen so geformt sind, daß Ihre momentanen Krümmungsmittelpunkte in jeder Stellung des Stützholmes mit dem momentanen Drehzentrum der Kopfbewegung beim Heben und Senken des auf der Kopfplatte aufliegenden Kopfes eines Patienten zusammenfallen.This object is achieved in that the raceways formed on the support beam for the rollers are shaped so that their current centers of curvature in any position of the support beam coincide with the current center of rotation of the head movement when lifting and lowering a patient's head resting on the head plate.
Die erfindungsgemäße Lösung beruht auf einer Analyse der anatomisch korrekten Bewegung des Kopfes und der Erkenntnis, daß sich die den Kopf mit dem Körper verbindende Wirbelsäule für die technische Realisierung des Kopfstützensystems als Gliederkette betrachten läßt. Die Wirbelsäule entspricht somit der Aneinanderreihung von einzelnen Gliedern, die in entsprechenden Abständen drehbar miteinander verbunden sind und deren jedes für sich eine gewisse Verdrehung zuläßt, wobei der Widerstand, der einer Verdrehung entgegengesetzt wird, mit zunehmendem Verdrehwinkel steigt.The solution according to the invention is based on an analysis of the anatomically correct movement of the head and the knowledge that the spine connecting the head to the body can be regarded as a link chain for the technical implementation of the headrest system. The spine thus corresponds to the stringing together of individual links which are rotatably connected to one another at appropriate intervals and each of which allows a certain amount of twisting, the resistance which is opposed to twisting increasing with increasing angle of twist.
Die gestreckte gerade ausgerichtete Lage sei als Mittellage und Ausgangslage folgender Betrachtungen gewählt. In der Mittellage sind alle Glieder des beeinflussten Bereiches in einer geraden Linie angeordnet. Wird der Kopf nun aus dieser Position angehoben, so wird dies zunächst zu einer Drehbewegung im vom Kopf am weitesten entfernten Drehglied führen, da dort die Kraft über den größten Hebel angreift und die kleinste Verdrehung hervorruft. Mit zunehmender Drehung übersteigt jedoch die Spannung in diesem Drehglied die des zum Kopf hin benachbarten Drehgliedes, so daß dieses nun eine Verdrehung erfährt. So schreitet der Mittelpunkt der Drehbewegung bei zunehmendem Anheben des Kopfes vom weitest entfernten Punkt in Richtung auf den Kopf hin voran. Die Kurve, welche die Gliederkette beschreibt, entspricht einer Spirale, die in waagerechter Richtung beginnend sich mit abnehmendem Radius nach oben krümmt. Für die Bewegung des Kopfes bedeutet dies, das ausgehend von einer senkrechten Hubbewegung von der Mittellage aus der Kopf idealerweise einer Spirale zunehmender Krümmung folgt, deren Momentanpole oder -Zentren auf der beschriebenen Mittelpunktsspirale vom am weitesten entfernten Punkt zum Beginn der Hubbewegung in Richtung des Kopfes wandern.The straight, straight position should be chosen as the central position and starting point for the following considerations. In the middle position are all limbs of the affected area arranged in a straight line. If the head is raised from this position, this will initially lead to a rotary movement in the rotary member furthest away from the head, since there the force acts on the largest lever and causes the smallest twist. With increasing rotation, however, the tension in this rotating member exceeds that of the rotating member adjacent to the head, so that it is now twisted. Thus, the center of the rotational movement progresses towards the head as the head is lifted from the furthest point. The curve that describes the link chain corresponds to a spiral that begins to curve upwards in the horizontal direction with a decreasing radius. For the movement of the head, this means that, starting from a vertical stroke movement from the central position, the head ideally follows a spiral of increasing curvature, the instantaneous poles or centers of which on the described center point spiral move from the most distant point to the start of the stroke movement in the direction of the head ,
Beim Absenken des Kopfes aus der Mittellage nach unten gelten die Gesetzmäßigkeiten entsprechend. Die Patientenaufiage begrenzt die Anzahl der an der Bewegung beteiligten Glieder jedoch stark, so daß eine Spirale mit deutlich engerem Krümmungsradius entsteht. Der letzte Drehpunkt liegt hier im Wirbelansatz der Schädelbasis.When lowering the head from the middle position downwards, the laws apply accordingly. However, patient placement limits the number of limbs involved in the movement, so that a spiral with a significantly narrower radius of curvature is created. The last fulcrum here is in the vertebral base of the skull base.
Die kontinuierliche Bewegung des Drehpunktes auf der Mittelpunktspirale kann zur Vereinfachung der technischen Lösung auch in diskrete Drehungen um definierte Drehpunkte abgebildet werden, wobei die Drehpunkte auf der Mittelpunktspirale liegen. Die Bahn des Kopfes wird dann durch eine Aneinanderreihung von Kreisbögen dargestellt, die zur Erzielung einer stetigen Bewegung tangential aneinander anschließen und deren Krümmungsradien von der Mittellage aus in Richtung Endlage immer kleiner werden.In order to simplify the technical solution, the continuous movement of the pivot point on the center spiral can also be represented in discrete rotations around defined pivot points, the pivot points being on the center spiral. The trajectory of the head is then represented by a series of arcs that connect tangentially to achieve a constant movement and whose radii of curvature become smaller and smaller from the central position towards the end position.
Sind zwei Punkte eines Körpers bei einer ebenen Bewegung fixiert, so ist damit jeder weitere Punkt des Körpers in seiner Position festgelegt. Ebenso kann die Kurvenbahn eines Körperpunktes, in diesem Fall der Schwerpunkt des Kopfes, durch die Kurvenbahnen mindestens zweier anderer Körperpunkte beschrieben werden. Damit läßt sich eine Bewegungskurve des Kopfes darstellen durch ein am Kopf angreifendes Führungselement, das an mindestens zwei Stellen auf lagespezifisch unterschiedlichen Kurvenfunktionen geführt wird. Bei der erfindungsgemäßen Lösung wird dieses Prinzip nun dadurch realisiert, daß der Stützholm zwischen drei Laufrollen eingespannt ist, deren an dem Stützholm ausgebildete Laufbahnen aufgrund der unterschiedlichen Positionen der Laufrollen auch eine unterschiedliche Form haben. Die Formen der Laufbahnen sind aus der gewünschten Bewegung des Kopfes hergeleitet. Dabei wird in jedem Punkt die Drehbewegung des Kopfes um einen Drehpunkt auf der oben beschriebenen Mittelpunktspirale durch eine Abrollbewegung der Laufrollen auf den Laufbahnen abgebildet, deren jeweiliger Momentanpol oder Krümmungsmittelpunkt mit diesem Drehpunkt des Kopfes zusammenfällt. Werden mindestens zwei Punkte des tragenden Stützholmes auf konzentrischen Kreisbahnen (realisiert durch die jeweiligen Laufbahnen mit den zugehörigen Laufrollen) geführt, so bewegen sich alle Punkte, die fest mit dem Stützholm und damit auch mit dem Kopf des Patienten verbunden sind, auf Kreisbahnabschnitten um das gleiche Drehzentrum. Die dritte Laufrolle verhindert ein Abheben des Stützhoimes von den zwei genannten Laufrollen im Falle wechselnder Lastrichtung und ist vorzugsweise zum Ausgleich von Fertigungsungenauigkeiten in Richtung auf den Stützholm vorgespannt.If two points of a body are fixed during a level movement, then every further point of the body is fixed in its position. Likewise, the curve path of a body point, in this case the center of gravity of the head, can pass through the curves of at least two other body points are described. This allows a movement curve of the head to be represented by a guide element which engages the head and is guided at at least two points on different curve functions depending on the position. In the solution according to the invention, this principle is now realized in that the support spar is clamped between three rollers, whose raceways formed on the support spar also have a different shape due to the different positions of the rollers. The shapes of the raceways are derived from the desired movement of the head. At each point, the rotational movement of the head around a fulcrum on the center spiral described above is represented by a rolling movement of the rollers on the raceways, the respective instantaneous pole or center of curvature of which coincides with this fulcrum of the head. If at least two points of the supporting support bar are guided on concentric circular paths (realized by the respective tracks with the associated rollers), all points that are firmly connected to the support bar and thus also to the patient's head move around the same on circular track sections turning center. The third roller prevents lifting of the support ring from the two mentioned rollers in the event of changing load directions and is preferably biased towards the support spar to compensate for manufacturing inaccuracies.
Bei einer bevorzugten Ausführungsform ist der Träger in Form eines mit dem Operationstisch starr verbindbaren Gehäuses ausgebildet, in dem die Laufrollen gelagert sind und der Stützholm geführt ist.In a preferred embodiment, the carrier is designed in the form of a housing which can be rigidly connected to the operating table, in which the rollers are mounted and the support bar is guided.
Der Antrieb des Stützholmes kann auf unterschiedliche Weise erfolgen. Beispielsweise kann der Stützholm eine Zahnspur tragen, in die ein von einem Motor antreibbares Ritzel eingreift. Bei einer bevorzugten Ausführungsform ist die Zahnspur an einer zur Krümmungsachse des Stützholmes senkrechten Seitenfläche desselben ausgebildet, wobei die den Motor und das Ritzel umfassende Antriebsvorrichtung um eine zur Seitenfläche schwenkbare Achse beweglich in dem Träger gelagert ist. Bei einer weiteren Ausführungsform umfaßt die Antriebsvorrichtung eine mittels eines Motors drehbare Gewindespindel, die sich an dem Träger abstützt und in eine an dem Stützholm beweglich gelagerte Mutter eingreift.The support beam can be driven in different ways. For example, the support bar can carry a toothed track in which a pinion driven by a motor engages. In a preferred embodiment, the toothed track is formed on a side surface of the same which is perpendicular to the axis of curvature of the support beam, the drive device comprising the motor and the pinion being mounted in the carrier so as to be movable about an axis pivotable to the side surface. In a further embodiment, the drive device comprises a threaded spindle rotatable by means of a motor, which is supported on the carrier and engages in a nut movably mounted on the support bar.
Bei einer weiteren Ausführungsform umfaßt die Antriebsvorrichtung ein Zugglied, das an oder nahe den beiden Enden des Stützholmes befestigt ist und über ein mittels eines Motors antreibbares Antriebsrad geführt ist. Das Zugglied kann dabei eine Kette oder ein Zahnriemen sein, so daß eine schlupffreie Verstellung des Stützholmes ermöglicht wird.In a further embodiment, the drive device comprises a tension member which is attached to or near the two ends of the support bar and is guided via a drive wheel which can be driven by a motor. The tension member can be a chain or a toothed belt, so that a slip-free adjustment of the support bar is made possible.
Schließlich könnte die Antriebsvorrichtung auch von einem Hydraulikzylinder gebildet sein, der am Stützholm angreift und sich an einem tischfesten Träger abstützt. Diese Ausführungsform eignet sich besonders für eine Kopfstütze, die dauerhaft mit einem hydraulisch verstellbaren Operationstisch verbunden ist.Finally, the drive device could also be formed by a hydraulic cylinder which engages the support bar and is supported on a table-fixed support. This embodiment is particularly suitable for a headrest that is permanently connected to a hydraulically adjustable operating table.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der folgenden Beschreibung, welche in Verbindung mit den beigefügten Zeichnungen die Erfindung anhand eines Ausführungsbeispieies erläutert. Es zeigen:Further features and advantages of the invention will become apparent from the following description, which explains the invention with reference to an exemplary embodiment in conjunction with the accompanying drawings. Show it:
Figur 1a-c Schematische Darstellungen der Kopfbewegung einer auf dem Rücken liegenden Person,1a-c Schematic representations of the head movement of a person lying on the back,
Figur 2 eine graphische Darstellung zur Erläuterung der technischenFigure 2 is a graphical representation to explain the technical
Realisierung der Bahnkurve für die Verstellbewegung der Kopfplatte,Realization of the path curve for the adjustment movement of the head plate,
Figur 3 eine schematische Darstellung des Gesamtkonzeptes für dieFigure 3 is a schematic representation of the overall concept for the
Bahnkurve des Kopfes und die Führung der Kopfstütze,Trajectory of the head and the guidance of the headrest,
Figur 4 eine perspektivische Gesamtansicht der erfindungsgemäßen motorisch verstellbaren Kopfstütze,FIG. 4 shows an overall perspective view of the motor-adjustable headrest according to the invention,
Figur 5 eine annähernd der Figur 4 entsprechende Darstellung der Kopfstütze, wobei ein Teil des Gehäuses entfernt ist, Figur 6 eine der Figur 5 entsprechende Darstellung der Kopfstütze, jedoch von der entgegengesetzten Seite her betrachtet, undFIG. 5 shows a representation of the headrest approximately corresponding to FIG. 4, with part of the housing being removed, 6 shows a representation of the headrest corresponding to FIG. 5, but viewed from the opposite side, and
Figur 7 eine perspektivische Darstellung des Holmes und derFigure 7 is a perspective view of the Holmes and
Antriebsvorrichtung.Drive device.
Die Figuren 1a-c zeigen die Krümmung der Wirbelsäule bei der Auf- und Abbewegung des Kopfes eines auf dem Rücken liegenden Patienten. Mit 10 ist die Patientenlagerfläche eines Operationstisches bezeichnet, an dem eine Kopfplatte 12 verstellbar angeordnet ist. Auf der Kopfplatte 12 ruht der Kopf 14 eines auf der Patientenlagerfläche 10 liegenden Patienten 16. Mit 18 ist der Schwerpunkt des Kopfes bezeichnet.Figures 1a-c show the curvature of the spine during the up and down movement of the head of a patient lying on his back. 10 denotes the patient support surface of an operating table on which a head plate 12 is adjustably arranged. The head 14 of a patient 16 lying on the patient support surface 10 rests on the head plate 12. 18 denotes the center of gravity of the head.
Die Figur 1b zeigt den Patienten 16 in seiner gestreckten Lage, wobei die Kopfplatte 12 mit der Patientenlagerfläche 10 fluchtet und die Wirbelsäule 20 des Patienten eine gerade Linie bildet. Wird der Kopf 14 des Patienten mittels der Kopfplatte 12 angehoben, so krümmt sich die Wirbelsäule entsprechend der Bahn 20' in Figur 1a. Wird der Kopf 14 durch Absenken der Kopfplatte 12 nach unten bewegt, so folgt die Wirbelsäule der Bahn 20" in Figur 1c. Man erkennt, daß die Wirbelsäule nicht eine Schwenkbewegung um ein festes Drehzentrum macht und daß die Bahnen 20' und 20" unterschiedlich gekrümmt sind.FIG. 1b shows the patient 16 in its extended position, the head plate 12 being flush with the patient support surface 10 and the spine 20 of the patient forming a straight line. If the patient's head 14 is raised by means of the head plate 12, the spine curves according to the path 20 ' in FIG. 1a. If the head 14 is moved downward by lowering the head plate 12, the spine follows the path 20 "in FIG. 1c. It can be seen that the spine does not make a pivoting movement about a fixed center of rotation and that the paths 20 ' and 20 " are curved differently are.
Anhand der Figuren 2 und 3 soll erläutert werden, wie die Kopfplatte 12 so verstellt werden kann, daß der Schwerpunkt 18 des Kopfes 14 beim Anheben und Senken der Kopfplatte 12 seiner anatomisch korrekten Bahn folgt, die in den Figuren 2 und 3 mit 22 bezeichnet ist.2 and 3, it will be explained how the head plate 12 can be adjusted so that the center of gravity 18 of the head 14 follows its anatomically correct path when the head plate 12 is raised and lowered, which is designated by 22 in FIGS. 2 and 3 ,
Die Kopfplatte 12 ist an dem einen Ende eines Stützholmes 24 befestigt, der zwischen 3 Laufrollen 26, 28 und 30 in der Zeichenebene verschiebbar geführt ist. Die Laufrollen 26, 28, 30 liegen dabei an Laufbahnen 32, 34 bzw. 36 an, die an dem Stützholm 24 ausgebildet sind. Diese Laufbahnen 32, 34, 36 werden aus einzelnen Abschnitten zusammengesetzt, die so aufgefunden werden, wie dies in Figur 2 schematisch erläutert wird.The head plate 12 is attached to one end of a support beam 24 which is guided between 3 rollers 26, 28 and 30 in the plane of the drawing. The rollers 26, 28, 30 lie against raceways 32, 34 and 36, which are formed on the support beam 24. These raceways 32, 34, 36 are made up of individual Assembled sections that are found as is schematically explained in Figure 2.
Figur 2 zeigt eine bestimmte Stellung des Kopfes oder einen Zeitpunkt der Stellbewegung des Kopfes, zu dem sich der Kopfschwerpunkt 18' an dem in Figur 2 dargestellten Punkt auf der Bewegungsbahn 22 befindet. Das zugehörige Drehzentrum in der Wirbelsäule, d.h. auf der Bahn 20" befindet sich an dem mit Zmom bezeichneten Punkt. Der Kopfschwerpunkt 18 ist über die Kopfplatte starr mit dem Stützholm 24 in Figur 3verbunden. Die Laufrollen 26, 28, 30 liegen jeweils in einem Punkt 26', 28', 30' auf der zugehörigen Laufbahn 32, 34, 36 auf. Die Punkte 26', 28', 30' sind auch Punkte des Stützholmes 24 und damit starr mit dem Kopfschwerpunkt 18 verbunden. Die vier Punkte 18', 26', 28'und 30' können also nur dann eine gemeinsame Drehbewegung um das momentane Drehzentrum Zm0m ausführen, wenn die momentanen Krümmungsmittelpunkte der Laufbahnen 32, 34, 36 mit dem momentanen Drehzentrum Zmom zusammenfallen, d.h. die Rollen 26, 28, 30 zu jedem Zeitpunkt auf konzentrischen Kreisbahnabschnitten mit dem Zentrum Zmom laufen.FIG. 2 shows a specific position of the head or a point in time of the actuating movement of the head at which the center of gravity of the head 18 ′ is located on the path of movement 22 shown in FIG. 2. The associated center of rotation in the spine, ie on the track 20 ″, is located at the point denoted by Z mom . The center of gravity of the head 18 is rigidly connected to the support bar 24 in FIG. 3 via the head plate. The rollers 26, 28, 30 each lie in one Point 26 ', 28', 30 'on the associated raceway 32, 34, 36. The points 26 ' , 28 ', 30' are also points of the support bar 24 and are thus rigidly connected to the center of gravity 18. The four points 18 ' , 26 ' , 28 ' and 30 'can therefore only execute a common rotary movement about the current center of rotation Z m0m if the current centers of curvature of the raceways 32, 34, 36 coincide with the current center of rotation Z mom , ie the rollers 26, 28, 30 run at any time on concentric circular path sections with the center Zmom.
Unter dieser Bedingung werden bei Verlagerung des jeweils aktuellen oder momentanen Drehzentrums Zm0 entlang den Bahnen 20" und 20' die zugehörigen Abschnitte der Laufbahnen 32, 34, 36 ermittelt. Sie bilden aneinandergereiht die entsprechenden Laufbahnen 32, 34 und 36. Die Laufbahnen sind alle unterschiedlich. In ihrer Kombination ergeben sie jedoch durch die Abrollbewegung auf den entsprechenden Laufrollen 26, 28 bzw. 30 die gewünschte Bewegungsbahn der Kopfplatte 12 und damit des Kopfschwerpunktes 18.Under this condition, when the current or current center of rotation Zm 0 is displaced along the tracks 20 "and 20 ', the associated sections of the tracks 32, 34, 36 are determined. They form the corresponding tracks 32, 34 and 36 in a row. The tracks are all In their combination, however, they result from the rolling movement on the corresponding rollers 26, 28 or 30, the desired movement path of the head plate 12 and thus the head center of gravity 18.
Die Figuren 4 bis 7 zeigen nun in schematischer Darstellung anhand eines bevorzugten Ausführungsbeispieles die technische Realisierung der erfindungsgemäßen Kopfstütze. In den Figuren erkennt man ein allgemein mit 38 bezeichnetes Gehäuse, das im wesentlichen aus zwei zueinander parallelen Platten 40, 42 besteht, die durch Bolzen 44 in einem Abstand voneinander gehalten und miteinander verbunden sind. Zwischen den Platten 40 und 42 sind die Laufrollen 26, 28 und 30 um zu den Platten 40 und 42 senkrechte Achsen drehbar gelagert, zwischen denen der Stützholm 24 geführt ist. In der Figur 6 erkennt man die an dem Stützholm 24 ausgebildeten Laufbahnen 32, 34 und 36 für die Laufrollen 26, 28 bzw. 30. Der Stützholm 24 trägt an einem Ende eine Leiste 46, an der die in den Figuren 4 bis 7 nicht dargestellte Kopfplatte 12 befestigt werden kann. Ferner ist an diesem Ende des Stützholmes 24 ein Handgriff 48 angebracht, mit dem der Stützholm von Hand bewegt werden kann. Oberhalb der Laufrolle 28 befindet sich eine in Figur 6 erkennbare Abdeckplatte 50, die verhindern soll, daß Gegenstände, insbesondere Haare eines Patienten von der Laufrolle 28 erfaßt und in das Gehäuse 38 hineingezogen werden können.FIGS. 4 to 7 now show the technical implementation of the headrest according to the invention in a schematic representation using a preferred exemplary embodiment. In the figures one can see a housing, generally designated 38, which essentially consists of two mutually parallel plates 40, 42 which are held at a distance from one another by bolts 44 and are connected to one another. Between the plates 40 and 42, the rollers 26, 28 and 30 are rotatably mounted about axes perpendicular to the plates 40 and 42, between which the support beam 24 is guided. 6 shows the raceways 32, 34 and 36 formed on the support bar 24 for the rollers 26, 28 and 30, respectively. The support bar 24 carries at one end a strip 46 on which the bars not shown in FIGS. 4 to 7 are shown Head plate 12 can be attached. Furthermore, a handle 48 is attached to this end of the support beam 24, with which the support beam can be moved by hand. Above the roller 28 there is a cover plate 50 which can be seen in FIG. 6 and which is intended to prevent objects, in particular the hair of a patient, from being caught by the roller 28 and being pulled into the housing 38.
Die Stützrolle 30 wird durch eine Feder 52 in Richtung auf die Laufbahn 36 vorgespannt.The support roller 30 is biased by a spring 52 towards the raceway 36.
Der Antrieb für die Verstellung des Stützholms 24 ist in Figur 7 erläutert. Der Stützholm 24 trägt auf seiner einen Längsseite eine Zahnspur 54, in die ein Zahnritzel 56 eingreift, das über einen Schneckentrieb 58 von einem Motor 60 angetrieben wird. Die aus dem Motor 60, dem Schneckentrieb 58 und dem Ritzel 56 bestehende Antriebsvorrichtung oder Baugruppe ist in einer Platte 62, die an der Außenseite der Gehäuseplatte 42 angeschraubt ist, mittels einer Drehscheibe 64 um eine Achse 66 schwenkbar gelagert, so daß das Ritzel 56 der sich bei der Verstellung des Stützholmes 24 ändernden Richtung der Zähne der Zahnspur 54 folgen kann. Die Antriebsvorrichtung ist in der Praxis durch einen nicht dargestellten Deckel abgedeckt, der mit der Platte 62 befestigt ist.The drive for the adjustment of the support beam 24 is explained in FIG. 7. The support bar 24 carries on its one long side a toothed track 54 into which a toothed pinion 56 engages, which is driven by a motor 60 via a worm gear 58. The drive device or assembly consisting of the motor 60, the worm gear 58 and the pinion 56 is mounted in a plate 62 which is screwed to the outside of the housing plate 42 by means of a turntable 64 so as to be pivotable about an axis 66, so that the pinion 56 is the tooth trace 54 can follow changing direction of the teeth during the adjustment of the support beam 24. In practice, the drive device is covered by a cover, not shown, which is fastened to the plate 62.
Das Gehäuse 38 kann mit Hilfe eines nicht dargestellten Trägers an dem Gestell eines Operationstisches oder der Patientenlagerfläche 10 befestigt werden. The housing 38 can be attached to the frame of an operating table or the patient support surface 10 with the aid of a support (not shown).

Claims

Ansprüche Expectations
1. Motorisch verstellbare Kopfstütze für Operationstische, umfassend eine Kopfplatte (12), die an einem Ende eines gekrümmten Stützholmes (24) angeordnet ist, der in einer zur Krümmungsachse senkrechten Ebene an einem mit dem Operationstisch verbindbaren Träger (38) zwischen drei Laufrollen (26, 28, 30) verstellbar geführt ist, die in Stellrichtung einen Abstand voneinander haben, dadurch gekennzeichnet, daß die an dem Stützholm (24) ausgebildeten Laufbahnen (32, 34, 36) für die Laufrollen (26, 28, 30) so geformt sind, daß ihre momentanen Krümmungsmittelpunkte in jeder Stellung des Stützholmes (24) mit dem momentanen Drehzentrum Zm0m der Kopfbewegung beim Heben und Senken des auf der Kopfplatte (12) aufliegenden Kopfes (14) eines Patienten zusammenfallen.1. Motor-adjustable headrest for operating tables, comprising a head plate (12) which is arranged at one end of a curved support bar (24) which is in a plane perpendicular to the axis of curvature on a support (38) which can be connected to the operating table, between three rollers (26 , 28, 30) is adjustable, which are spaced from each other in the adjusting direction, characterized in that the raceways (32, 34, 36) formed on the support bar (24) for the rollers (26, 28, 30) are shaped in this way that their current centers of curvature in each position of the support beam (24) coincide with the current center of rotation Z m0m of the head movement when lifting and lowering a patient's head (14) resting on the head plate (12).
2. Kopfstütze nach Anspruch 1, dadurch gekennzeichnet, daß zwei der Laufbahnen (32, 36) nach unten weisen und eine Laufbahn (34) nach oben weist.2. Headrest according to claim 1, characterized in that two of the raceways (32, 36) point downwards and a raceway (34) points upwards.
3. Kopfstütze nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß eine der den Stützholm (24) unterstützenden Laufrollen (30) in Richtung auf den Stützholm (24) vorgespannt ist.3. Headrest according to claim 1 or 2, characterized in that one of the support bar (24) supporting rollers (30) is biased towards the support bar (24).
4. Kopfstütze nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der Träger ein mit dem Operationstisch starr verbindbares Gehäuse (38) umfaßt, in dem die Laufrollen (26,- 28, 30) gelagert sind, und der Stützholm (24) geführt ist.4. Headrest according to one of claims 1 to 3, characterized in that the carrier comprises a housing (38) rigidly connectable to the operating table, in which the rollers (26, - 28, 30) are mounted, and the support bar (24) is led.
5. Kopfstütze nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß der Stützholm (24) eine Zahnspur (54) trägt, in die ein von einem Motor (60) antreibbares Ritzel (56) eingreift. 5. Headrest according to one of claims 1 to 4, characterized in that the support bar (24) carries a tooth track (54) into which a pinion (56) which can be driven by a motor (60) engages.
6. Kopfstütze nach Anspruch 5, dadurch gekennzeichnet, daß die Zahnspur (54) an einer zur Krümmungsachse des Stützholmes (24) senkrechten Seitenfläche desselben ausgebildet ist und dass die den Motor (60) und das Ritzel (56) umfassende Antriebsvorrichtung um eine zur Seitenfläche senkrechte Schwenkachse (66) beweglich an dem Träger (38) gelagert ist.6. Headrest according to claim 5, characterized in that the toothed track (54) is formed on a side surface perpendicular to the axis of curvature of the support beam (24) and that the motor (60) and the pinion (56) comprising a drive device to the side surface vertical pivot axis (66) is movably mounted on the carrier (38).
7. Kopfstütze nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Antriebsvorrichtung eine mittels eines Motors drehbare Gewindespindel umfaßt, die sich an dem Träger abstützt und die in eine an dem Stützholm beweglich gelagerte Mutter eingreift.7. Headrest according to one of claims 1 to 4, characterized in that the drive device comprises a threaded spindle rotatable by means of a motor, which is supported on the carrier and which engages in a nut movably mounted on the support bar.
8. Kopfstütze nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Antriebsvorrichtung ein Zugglied umfaßt, das an oder nahe den beiden Enden des Stützholmes befestigt ist und über ein mittels eines Motors antreibbares Antriebsrad geführt ist.8. Headrest according to one of claims 1 to 4, characterized in that the drive device comprises a tension member which is attached to or near the two ends of the support spar and is guided via a drive wheel which can be driven by a motor.
9. Kopfstütze nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Antriebsvorrichtung einen hydraulischen Zylinder umfaßt, der sich an einem Träger abstützt. 9. Headrest according to one of claims 1 to 4, characterized in that the drive device comprises a hydraulic cylinder which is supported on a carrier.
EP03789027A 2002-11-19 2003-11-11 Headrest adjustable by means of a motor Expired - Lifetime EP1562530B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10253863 2002-11-19
DE10253863A DE10253863B4 (en) 2002-11-19 2002-11-19 Motorized adjustable headrest
PCT/EP2003/012588 WO2004045483A2 (en) 2002-11-19 2003-11-11 Headrest adjustable by means of a motor

Publications (2)

Publication Number Publication Date
EP1562530A2 true EP1562530A2 (en) 2005-08-17
EP1562530B1 EP1562530B1 (en) 2008-09-17

Family

ID=32240160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03789027A Expired - Lifetime EP1562530B1 (en) 2002-11-19 2003-11-11 Headrest adjustable by means of a motor

Country Status (7)

Country Link
US (1) US7134157B2 (en)
EP (1) EP1562530B1 (en)
JP (1) JP4303682B2 (en)
AT (1) ATE408390T1 (en)
DE (2) DE10253863B4 (en)
ES (1) ES2311750T3 (en)
WO (1) WO2004045483A2 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006055211B3 (en) * 2006-11-21 2008-05-21 Sirona Dental Systems Gmbh Adjustable headrest for a dental workstation
US8636670B2 (en) 2008-05-13 2014-01-28 The Invention Science Fund I, Llc Circulatory monitoring systems and methods
US20090287120A1 (en) 2007-12-18 2009-11-19 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Circulatory monitoring systems and methods
US9717896B2 (en) 2007-12-18 2017-08-01 Gearbox, Llc Treatment indications informed by a priori implant information
US10130542B1 (en) * 2010-09-17 2018-11-20 Glenn Gerald Strawder Device for positioning the neck of a person in the flexion and extension positions
DE102010061788A1 (en) * 2010-11-23 2012-05-24 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Device for adjusting e.g. back frame that is equipped to backrest of motor car seat, has adjusting element defining line-like extended plant for back support, so that adjusting element acts on back support over line-like extended plant
JP2013048675A (en) * 2011-08-30 2013-03-14 Toshiba Corp Clothing drier
EP2689761A1 (en) 2012-07-26 2014-01-29 Fundación para la Investigación del hospital Universitario y Politécnico de la Fe Stretcher with a movable headrest, its use and a movable headrest assembly for stretchers or beds
WO2015192134A1 (en) 2014-06-13 2015-12-17 University Of Utah Research Foundation Therapeutic ultrasound breast treatment
DE102014116169A1 (en) * 2014-11-06 2016-05-12 MAQUET GmbH Claw for attachment to a slide rail of a surgical table
KR200487320Y1 (en) * 2016-10-31 2018-09-05 (주)메가메디칼 Operating medical navigation system with the tiltable head part

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR451582A (en) * 1912-01-22 1913-04-22 Chirurgie Industrie G M B H Operating table or the like
AT107922B (en) * 1926-09-04 1927-11-10 Franz Dr Haslinger Headrest for operating tables or the like.
JPS56145848A (en) * 1980-04-14 1981-11-12 Morita Mfg Apparatus for adjusting inclination of head rest of treating table
US4515406A (en) * 1982-09-28 1985-05-07 Takara Company, New York, Inc. Headrest for medical treatment chair
DE8717434U1 (en) * 1987-08-14 1988-10-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
DE68907951T2 (en) * 1988-03-04 1993-12-16 Siemens Ag Articulated headrest mechanism.
DE9116002U1 (en) * 1991-12-23 1992-02-27 Gpa Gesellschaft Fuer Prozess-Automation Gmbh, 2000 Hamburg, De
JP3550704B2 (en) * 1993-09-30 2004-08-04 株式会社モリタ東京製作所 Front table tilt adjustment device such as treatment table
US7040705B2 (en) * 2000-09-20 2006-05-09 Robert Clough Seat headrest
US7364239B2 (en) * 2000-09-20 2008-04-29 Robert Clough Seat headrest
US6666517B2 (en) * 2000-09-20 2003-12-23 Robert Clough Seat headrest
US6467846B2 (en) * 2000-09-20 2002-10-22 Robert Clough Seat headrest
US6607242B2 (en) * 2000-12-13 2003-08-19 Lear Corporation Head restraint assembly

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2004045483A3 *

Also Published As

Publication number Publication date
ES2311750T3 (en) 2009-02-16
JP4303682B2 (en) 2009-07-29
DE10253863A1 (en) 2004-06-03
US7134157B2 (en) 2006-11-14
DE10253863B4 (en) 2008-07-10
WO2004045483A3 (en) 2004-07-22
DE50310529D1 (en) 2008-10-30
WO2004045483A2 (en) 2004-06-03
JP2006506143A (en) 2006-02-23
US20060150334A1 (en) 2006-07-13
EP1562530B1 (en) 2008-09-17
ATE408390T1 (en) 2008-10-15

Similar Documents

Publication Publication Date Title
DE60116660T2 (en) MECHANISM FOR OPERATING A VEHICLE DOOR
DE3223815C2 (en)
DE69738141T2 (en) patient support
DE4220995A1 (en) Arching device, in particular for seat backrests
EP1732840A1 (en) Lifting device
EP3303940A1 (en) Tracking device
EP1562530B1 (en) Headrest adjustable by means of a motor
DE2925781A1 (en) Automatic adjustment system for headrest of driving seat - uses programmable memory to store height and inclination on receipt of call system
DE3618125A1 (en) BREAD CUTTER
DE2844647A1 (en) LENGTH ADJUSTMENT FOR A VEHICLE SEAT
DE20311153U1 (en) Treatment couch with headrest
EP0918658B1 (en) Seat back rest for a motor vehicle with an adjustment device to rotate the head of the back rest
DE2319775C3 (en) Device adjustable with respect to several reference axes for an object stored in a retaining ring
EP0565833A1 (en) Device for perpendicularly aligning the upright axis of a superstructure turnably and inclinably mounted on an understructure
DE19549088A1 (en) Lifting table, esp. for industrial manufacturing,
DE19850121B4 (en) Adjustable lumbar support
DE102006051509A1 (en) Dental treatment chair
DE2529556A1 (en) DEVICE FOR ADJUSTING A VEHICLE SEAT
AT504107B1 (en) CONTACT WIRE SIDE HOLDER
EP0788767A1 (en) X-ray diagnostic apparatus
DE2948224A1 (en) Height adjustment for car seat headrest - has tensioned cable drives each side of headrest frame
WO2002053449A1 (en) Windshield for motorcycles
DE10058017A1 (en) Motor vehicle seat has backrest supporting internal support unit with connected pivot elements and drive
DE102013109623A1 (en) Climbing wall with movable support
DE10323786B4 (en) Sunroof with guide module

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20041230

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

RIN1 Information on inventor provided before grant (corrected)

Inventor name: KOCH, GUIDO

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: NV

Representative=s name: SCHNEIDER FELDMANN AG PATENT- UND MARKENANWAELTE

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REF Corresponds to:

Ref document number: 50310529

Country of ref document: DE

Date of ref document: 20081030

Kind code of ref document: P

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2311750

Country of ref document: ES

Kind code of ref document: T3

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080917

Ref country code: SI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080917

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: AT

Payment date: 20081120

Year of fee payment: 6

NLV1 Nl: lapsed or annulled due to failure to fulfill the requirements of art. 29p and 29m of the patents act
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 20081124

Year of fee payment: 6

REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081217

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080917

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080917

Ref country code: RO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080917

Ref country code: PT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090217

Ref country code: CZ

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080917

BERE Be: lapsed

Owner name: MAQUET G.M.B.H. & CO. KG

Effective date: 20081130

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081130

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080917

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080917

Ref country code: EE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080917

26N No opposition filed

Effective date: 20090618

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081130

EUG Se: european patent has lapsed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20081111

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080917

Ref country code: HU

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20090318

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091111

Ref country code: TR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20080917

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20081218

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20091112

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50310529

Country of ref document: DE

Representative=s name: PATENTANWAELTE SCHAUMBURG, THOENES, THURN, LAN, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50310529

Country of ref document: DE

Representative=s name: PATENTANWAELTE SCHAUMBURG, THOENES, THURN, LAN, DE

Effective date: 20141210

Ref country code: DE

Ref legal event code: R081

Ref document number: 50310529

Country of ref document: DE

Owner name: MAQUET GMBH, DE

Free format text: FORMER OWNER: MAQUET GMBH & CO. KG, 76437 RASTATT, DE

Effective date: 20141210

Ref country code: DE

Ref legal event code: R082

Ref document number: 50310529

Country of ref document: DE

Representative=s name: SCHAUMBURG & PARTNER PATENTANWAELTE GBR, DE

Effective date: 20141210

Ref country code: DE

Ref legal event code: R082

Ref document number: 50310529

Country of ref document: DE

Representative=s name: ZACCO DR. PETERS UND PARTNER, DE

Effective date: 20141210

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20141120

Year of fee payment: 12

Ref country code: GB

Payment date: 20141120

Year of fee payment: 12

Ref country code: CH

Payment date: 20141120

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20141118

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: IT

Payment date: 20141124

Year of fee payment: 12

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20141223

Year of fee payment: 12

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50310529

Country of ref document: DE

Representative=s name: SCHAUMBURG & PARTNER PATENTANWAELTE GBR, DE

Ref country code: DE

Ref legal event code: R082

Ref document number: 50310529

Country of ref document: DE

Representative=s name: ZACCO DR. PETERS UND PARTNER, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R082

Ref document number: 50310529

Country of ref document: DE

Representative=s name: ZACCO DR. PETERS UND PARTNER, DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 50310529

Country of ref document: DE

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20151111

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151130

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151130

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151111

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160729

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151111

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20160601

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151130

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20161227

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20151112