EP1562530B1 - Appuie-tete motorise - Google Patents

Appuie-tete motorise Download PDF

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Publication number
EP1562530B1
EP1562530B1 EP03789027A EP03789027A EP1562530B1 EP 1562530 B1 EP1562530 B1 EP 1562530B1 EP 03789027 A EP03789027 A EP 03789027A EP 03789027 A EP03789027 A EP 03789027A EP 1562530 B1 EP1562530 B1 EP 1562530B1
Authority
EP
European Patent Office
Prior art keywords
head
support
support shaft
head rest
motor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP03789027A
Other languages
German (de)
English (en)
Other versions
EP1562530A2 (fr
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/fr
Application granted granted Critical
Publication of EP1562530B1 publication Critical patent/EP1562530B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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 top plate, which is arranged at one end of a curved support spar, which is guided in an adjustable direction perpendicular to the axis of curvature on a connectable to the operating table carrier between three rollers adjustable in the direction of adjustment a distance have each other.
  • Existing headrest systems can be subdivided into headrests that can be manually adjusted in position and those that support the lifting movement by external energy, e.g. an electric motor or a hydraulic drive.
  • Particularly simple embodiments are limited to a juxtaposition of several mutually rotatable members, which are braced against each other when the correct position is found.
  • the load of the headstock must be borne by the operator, requiring the use of both hands.
  • Such an arrangement is unsuitable for intraoperative adjustments.
  • the vertical lifting power can, as already mentioned, also be provided by external energy. Depending on the chosen system can be dispensed with the self-locking, so that the weight load acts directly on the actuators.
  • the head is mounted on a boom, which is connected via two parallel links to the fixed points in the back of the patient.
  • the head describes a purely translational path, which corresponds to a circular arc.
  • the head is received on a boom which is rotatably mounted at a point below the patient and therefore describes a circular path when it is adjusted.
  • the largest possible boom length is sought in order to realize an approximately linear lifting movement of the head.
  • the support beam is formed by a circular ring segment, which is guided by three bearing rollers and is driven via a toothing on the circular ring segment. Through this guide, it is possible to move the center of the rotational movement of the head in the area above the patient support surface.
  • a similar headrest is from the US-A-4 515 406 known.
  • All the known headrest systems have in common that the adjusting movement can be realized by very simple forms of movement which describe quasi-linear or circular paths in consideration of mechanical boundary conditions.
  • these tracks do not correspond to the human anatomy, so that compensatory movements of the head must take place. If this compensation movement is prevented, e.g. by storing the head in a head cap, the patient is stressed depending on the direction of adjustment to compression or extension. An alert patient will temporarily lift his head under the onset of pain and thus bring about a compensation.
  • a relaxed patient does not have this option and remains in the respective voltage situation.
  • the invention has the object of providing a motor-adjustable headrest of the type mentioned in such a way that the head of a lying on the patient support surface of the operating table patient when lifting and lowering the top plate can follow an anatomically correct path.
  • the solution according to the invention is based on an analysis of the anatomically correct movement of the head and the realization that the vertebral column connecting the head to the body can be regarded as a link chain for the technical realization of the head support system.
  • the spine thus corresponds to the juxtaposition of individual links, which are rotatably connected to each other at appropriate intervals and each of which allows for a certain rotation, wherein the resistance, which is opposite to a rotation, increases with increasing angle of rotation.
  • the stretched straight aligned position is chosen as the middle position and initial position of the following considerations.
  • In the middle position are all members of the affected area arranged in a straight line. If the head is now raised from this position, this will initially lead to a rotational movement in the farthest from the head rotary member, because there the force acts on the largest lever and causes the smallest twist. With increasing rotation, however, the voltage in this rotary member exceeds that of the head adjacent to the rotary member, so that this now undergoes a rotation. Thus, as the head is raised, the center of rotation advances from the furthest point toward the head.
  • the curve describing the link chain corresponds to a spiral that curves upwards starting in the horizontal direction with decreasing radius.
  • the continuous movement of the fulcrum on the center-point spiral can also be represented in discrete rotations about defined pivot points for simplification of the technical solution, with the pivot points lying on the center-point spiral.
  • the path of the head is then represented by a series of circular arcs, which connect tangentially to each other to achieve a steady movement and whose radii of curvature are getting smaller and smaller from the middle position towards the end position.
  • a movement curve of the head can be represented by a guide element acting on the head, which is guided on at least two locations on location-specific different curve functions.
  • this principle is now realized in that the support beam is clamped between three rollers whose trained on the support rail raceways 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.
  • the rotational movement of the head about one pivot point on the above-described center-point spiral is represented by a rolling movement of the rollers on the raceways, whose respective instantaneous center of curvature or center of curvature coincides with this pivot point of the head. If at least two points of the load-bearing support rail are guided on concentric circular paths (realized by the respective raceways with the associated rollers), then all the points which are firmly connected to the support rail and thus also to the patient's head move around the same on circular path sections turning center.
  • the third roller prevents lifting of the support Holmes of the two rollers mentioned in the case of changing load direction and is preferably biased to compensate for manufacturing inaccuracies in the direction of the support beam.
  • the carrier is in the form of a rigidly connectable to the operating table housing in which the rollers are mounted and the support spar is guided.
  • the support spar carry a tooth trace, in which engages a drivable by a motor pinion.
  • the tooth trace is formed on a side surface perpendicular to the axis of curvature of the support spar, wherein the drive device comprising the motor and the pinion is movably supported in the carrier about an axis pivotable toward the side surface.
  • the drive device comprises a rotatable by means of a motor threaded spindle, which is supported on the carrier and engages in a movably mounted on the support spar nut.
  • the drive device comprises a tension member, which is attached to or near the two ends of the support spar and is guided over a driven by a motor drive wheel.
  • the tension member may be a chain or a toothed belt, so that a slip-free adjustment of the support Holmes is possible.
  • the drive device could also be formed by a hydraulic cylinder which engages the support beam 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.
  • FIGS. 1a-c show the curvature of the spine during the up and down movement of the head of a patient lying on his back.
  • the patient support surface of a surgical table is referred to, on which a head plate 12 is arranged adjustable.
  • a head plate 12 On the top plate 12 rests the head 14 of a lying on the patient support surface 10 patients 16.
  • the center of gravity of the head is designated.
  • FIG. 1b shows the patient 16 in its extended position with the head plate 12 in alignment with the patient support surface 10 and the patient's spine 20 forming a straight line.
  • the spine curves according to the path 20 'in FIG FIG. 1a , If the head 14 is moved downward by lowering the head plate 12, the spine follows the web 20 "in Figure 1c , It can be seen that the spine does not pivot about a fixed center of rotation and that the tracks 20 'and 20 "are curved differently.
  • FIGS. 2 and 3 Let it be explained how the head plate 12 can be adjusted so that the center of gravity 18 of the head 14 when lifting and lowering the head plate 12 follows its anatomically correct path, which in the FIGS. 2 and 3 designated 22.
  • the top plate 12 is attached to the one end of a support spar 24 which is slidably guided between 3 rollers 26, 28 and 30 in the plane of the drawing.
  • the rollers 26, 28, 30 rest on raceways 32, 34 and 36, which are formed on the support beam 24.
  • These tracks 32, 34, 36 are made of individual Composed of sections that are found as in FIG. 2 is explained schematically.
  • FIG. 2 shows a certain position of the head or a timing of the adjusting movement of the head, to which the head center 18 'at the in FIG. 2 shown point on the trajectory 22 is located.
  • the associated center of rotation in the spine ie, "located on the web 20 at the MOM designated Z point.
  • the head center of gravity 18 is on the head plate rigidly connected to the support shaft 24 in FIG. 3 connected.
  • the rollers 26, 28, 30 are each in a point 26 ', 28', 30 'on the associated track 32, 34, 36 on.
  • the four points 18 ', 26', 28 'and 30' can only perform a common rotational movement about the instantaneous center of rotation Z mom , if the current centers of curvature of the tracks 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 Z mom .
  • FIGS. 4 to 7 now show a schematic representation of a preferred embodiment, the technical realization of the headrest according to the invention.
  • a generally designated 38 housing which consists essentially of two mutually parallel plates 40, 42 which are held by bolts 44 at a distance from each other and connected to each other.
  • the rollers 26, 28 and 30 rotatably mounted about the plates 40 and 42 perpendicular axes, between which the support rail 24 is guided.
  • the support beam 24 carries at one end a bar 46, at which the in the FIGS. 4 to 7 not shown top plate 12 can be attached.
  • a handle 48 is attached to this end of the support Holmes 24, with which the support beam can be moved by hand.
  • a handle 48 is attached to this end of the support Holmes 24, with which the support beam can be moved by hand.
  • Above the roller 28 is an in FIG. 6 recognizable cover plate 50, which is intended to prevent objects, in particular hair of a patient can be detected by the roller 28 and pulled into the housing 38.
  • the support roller 30 is biased by a spring 52 in the direction of the track 36.
  • the drive for the adjustment of the support member 24 is in FIG. 7 explained.
  • the support beam 24 carries on its one longitudinal side a tooth trace 54, in which a toothed pinion 56 engages, which is driven by a worm drive 58 by a motor 60.
  • the consisting of the motor 60, the worm gear 58 and the pinion 56 driving device or assembly is mounted in a plate 62 which is screwed to the outside of the housing plate 42 by means of a turntable 64 about an axis 66 pivotally, so that the pinion 56 of the can change in the adjustment of the support Holmes 24 changing direction of the teeth of the tooth trace 54 can follow.
  • the drive device is covered in practice by a cover, not shown, which is fixed to the plate 62.
  • the housing 38 may be secured to the frame of an operating table or patient support surface 10 by means of a support, not shown.

Landscapes

  • Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Otolaryngology (AREA)
  • Neurosurgery (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Chair Legs, Seat Parts, And Backrests (AREA)
  • Fittings On The Vehicle Exterior For Carrying Loads, And Devices For Holding Or Mounting Articles (AREA)
  • Seats For Vehicles (AREA)

Claims (9)

  1. Appuie-tête pour tables d'opération qui est réglable de façon motorisée, ledit appuie-tête comportant une plaque de tête (12) qui est disposée à une extrémité d'un longeron de support incurvé (24), lequel est guidé de façon réglable, dans un plan perpendiculaire à l'axe de courbure, entre trois galets de roulement (26, 28, 30), espacés l'un de l'autre dans la direction de réglage, au niveau d'un support (38) pouvant être relié à la table d'opération, caractérisé en ce que les pistes de roulement (32, 34, 36), conformées sur le longeron de support (24), associées aux galets de roulement sont toutes différentes et sont conformées de telle façon que les centres de rotation instantanés des pistes de roulement (32, 34, 36) de courbures différentes coïncident, dans chaque position du longeron de support (24), avec le centre de tournage instantané Zmom du mouvement spiroïdal lorsque la tête (14) d'un patient reposant sur la plaque de tête (12) se soulève et s'abaisse.
  2. Appuie-tête selon la revendication 1, caractérisé en ce que la surface respective de deux des pistes de roulement (32, 36) est dirigée vers le bas, et la surface d'une piste de roulement (34) est dirigée vers le haut.
  3. Appuie-tête selon la revendication 1 ou 2, caractérisé en ce que l'un des galets de roulement (30) qui sont en appui contre le bas du longeron de support (24) est précontraint en direction du longeron de support (24).
  4. Appuie-tête selon l'une des revendications 1 à 3, caractérisé en ce que le support comporte un carter (38) qui peut être relié rigidement à la table d'opération, dans lequel les galets de roulement (26, 28, 30) sont montés et dans lequel le longeron de support (24) est guidé.
  5. Appuie-tête selon l'une des revendications 1 à 4, caractérisé en ce que le longeron de support (24) porte une piste dentée (54) avec laquelle s'engrène un pignon (56) qui peut être entraîné par un moteur (60).
  6. Appuie-tête selon la revendication 5, caractérisé en ce que la piste dentée (54) est conformée sur une surface latérale du longeron de support (24) qui est perpendiculaire à l'axe de courbure dudit longeron, et en ce que le dispositif d'entraînement qui comporte le moteur (60) et le pignon (56) est monté sur le support (38) de façon à être mobile autour d'un axe de pivotement (66) perpendiculaire à ladite surface latérale.
  7. Appuie-tête selon l'une des revendications 1 à 4, caractérisé en ce que le dispositif d'entraînement comporte une broche filetée qui est apte à tourner au moyen d'un moteur, qui s'appuie sur le support et qui s'engage dans un écrou monté de façon à être mobile sur le longeron de support.
  8. Appuie-tête selon l'une des revendications 1 à 4, caractérisé en ce que le dispositif d'entraînement comporte un élément de traction qui est fixé aux deux extrémités, ou près des deux extrémités, du longeron de support, et qui est guidé par une roue d'entraînement pouvant être entraînée par un moteur.
  9. Appuie-tête selon l'une des revendications 1 à 4, caractérisé en ce que le dispositif d'entraînement comporte un vérin hydraulique qui s'appuie sur un support.
EP03789027A 2002-11-19 2003-11-11 Appuie-tete motorise Expired - Lifetime EP1562530B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10253863 2002-11-19
DE10253863A DE10253863B4 (de) 2002-11-19 2002-11-19 Motorisch verstellbare Kopfstütze
PCT/EP2003/012588 WO2004045483A2 (fr) 2002-11-19 2003-11-11 Appuie-tete motorise

Publications (2)

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

Family

ID=32240160

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03789027A Expired - Lifetime EP1562530B1 (fr) 2002-11-19 2003-11-11 Appuie-tete motorise

Country Status (7)

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

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006055211B3 (de) * 2006-11-21 2008-05-21 Sirona Dental Systems Gmbh Verstellbare Kopfstütze für einen Dentalarbeitsplatz
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
US8636670B2 (en) 2008-05-13 2014-01-28 The Invention Science Fund I, Llc Circulatory monitoring systems and methods
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 (de) * 2010-11-23 2012-05-24 Brose Fahrzeugteile Gmbh & Co. Kommanditgesellschaft, Coburg Vorrichtung zur Einstellung einer Lordosenstütze
JP2013048675A (ja) * 2011-08-30 2013-03-14 Toshiba Corp 衣類乾燥機
EP2689761A1 (fr) 2012-07-26 2014-01-29 Fundación para la Investigación del hospital Universitario y Politécnico de la Fe Brancard muni d'un appuie-tête mobile, son utilisation et ensemble appuie-tête mobile pour civières ou lits
WO2015192134A1 (fr) 2014-06-13 2015-12-17 University Of Utah Research Foundation Traitement thérapeutique à ultrasons du sein
DE102014116169A1 (de) * 2014-11-06 2016-05-12 MAQUET GmbH Spannklaue zur Anbringung an einer Gleitschiene eines Operationstisches
KR200487320Y1 (ko) * 2016-10-31 2018-09-05 (주)메가메디칼 틸팅 가능한 헤드부를 구비한 수술 내비게이션 시스템

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR451582A (fr) * 1912-01-22 1913-04-22 Chirurgie Industrie G M B H Table d'opération ou analogue
AT107922B (de) * 1926-09-04 1927-11-10 Franz Dr Haslinger Kopfstütze für Operationstische od. dgl.
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 (de) * 1987-08-14 1988-10-27 Siemens AG, 1000 Berlin und 8000 München Motorisch verstellbare Kopfstütze für einen zahnärztlichen Behandlungsstuhl
EP0331122B1 (fr) * 1988-03-04 1993-08-04 Siemens Aktiengesellschaft Mécanisme articulé pour appui-tête
DE9116002U1 (de) * 1991-12-23 1992-02-27 GPA Gesellschaft für Prozeß-Automation GmbH, 2000 Hamburg Kopfstütze für einen Operationstisch, Operationsstuhl o.dgl.
JP3550704B2 (ja) * 1993-09-30 2004-08-04 株式会社モリタ東京製作所 治療台等の安頭台傾動調整装置
US6666517B2 (en) * 2000-09-20 2003-12-23 Robert Clough Seat headrest
US7364239B2 (en) * 2000-09-20 2008-04-29 Robert Clough Seat headrest
US6467846B2 (en) * 2000-09-20 2002-10-22 Robert Clough Seat headrest
US7040705B2 (en) * 2000-09-20 2006-05-09 Robert Clough Seat headrest
US6607242B2 (en) * 2000-12-13 2003-08-19 Lear Corporation Head restraint assembly

Also Published As

Publication number Publication date
DE50310529D1 (de) 2008-10-30
US20060150334A1 (en) 2006-07-13
DE10253863B4 (de) 2008-07-10
ATE408390T1 (de) 2008-10-15
WO2004045483A2 (fr) 2004-06-03
JP2006506143A (ja) 2006-02-23
JP4303682B2 (ja) 2009-07-29
ES2311750T3 (es) 2009-02-16
WO2004045483A3 (fr) 2004-07-22
DE10253863A1 (de) 2004-06-03
EP1562530A2 (fr) 2005-08-17
US7134157B2 (en) 2006-11-14

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