EP1562530A2 - Appuie-tete motorise - Google Patents

Appuie-tete motorise

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)
English (en)
Other versions
EP1562530B1 (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

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).

Landscapes

  • Health & Medical Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Public Health (AREA)
  • General Health & Medical Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biomedical Technology (AREA)
  • Engineering & Computer Science (AREA)
  • Otolaryngology (AREA)
  • Neurosurgery (AREA)
  • Oral & Maxillofacial Surgery (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)

Abstract

L'invention concerne un appuie-tête motorisé pour tables d'opération, cet appuie-tête comprenant une plaque (12) destinée à soutenir la tête. Cette plaque (12) est disposée à une extrémité d'une barre de support (24) courbée qui est guidée de façon réglable dans un plan perpendiculaire à l'axe de courbure entre trois galets de roulement (26, 28, 30) le long d'un support pouvant être relié à la table d'opération, lesdits galets étant placés à distance les uns des autres dans la direction de réglage. Selon l'invention, les chemins de roulement (32, 34, 36) des galets de roulement (26, 28, 30), ces chemins étant ménagés sur la barre de support (24), sont formés de telle sorte que leurs centres de courbure momentanés coïncident, dans chaque position de la barre de support (24), avec le centre de rotation momentané du mouvement de la tête (14) d'un patient lorsque celle-ci, qui repose sur la plaque (12), est relevée ou baissée.
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
DE10253863A DE10253863B4 (de) 2002-11-19 2002-11-19 Motorisch verstellbare Kopfstütze
DE10253863 2002-11-19
PCT/EP2003/012588 WO2004045483A2 (fr) 2002-11-19 2003-11-11 Appuie-tete motorise

Publications (2)

Publication Number Publication Date
EP1562530A2 true EP1562530A2 (fr) 2005-08-17
EP1562530B1 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
US9717896B2 (en) 2007-12-18 2017-08-01 Gearbox, Llc Treatment indications informed by a priori implant information
US20090287120A1 (en) 2007-12-18 2009-11-19 Searete Llc, A Limited Liability Corporation Of The State Of Delaware Circulatory monitoring systems and methods
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
EP4098322A1 (fr) 2014-06-13 2022-12-07 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 (fr) * 1987-08-14 1988-10-27 Siemens Ag, 1000 Berlin Und 8000 Muenchen, De
EP0331122B1 (fr) * 1988-03-04 1993-08-04 Siemens Aktiengesellschaft Mécanisme articulé pour appui-tête
DE9116002U1 (fr) * 1991-12-23 1992-02-27 Gpa Gesellschaft Fuer Prozess-Automation Gmbh, 2000 Hamburg, De
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
US6467846B2 (en) * 2000-09-20 2002-10-22 Robert Clough Seat headrest
US7040705B2 (en) * 2000-09-20 2006-05-09 Robert Clough Seat headrest
US7364239B2 (en) * 2000-09-20 2008-04-29 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
ATE408390T1 (de) 2008-10-15
JP4303682B2 (ja) 2009-07-29
WO2004045483A3 (fr) 2004-07-22
ES2311750T3 (es) 2009-02-16
US20060150334A1 (en) 2006-07-13
WO2004045483A2 (fr) 2004-06-03
DE10253863B4 (de) 2008-07-10
US7134157B2 (en) 2006-11-14
JP2006506143A (ja) 2006-02-23
DE10253863A1 (de) 2004-06-03
DE50310529D1 (de) 2008-10-30
EP1562530B1 (fr) 2008-09-17

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