EP3253352B1 - Operationstisch - Google Patents

Operationstisch Download PDF

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Publication number
EP3253352B1
EP3253352B1 EP16701977.7A EP16701977A EP3253352B1 EP 3253352 B1 EP3253352 B1 EP 3253352B1 EP 16701977 A EP16701977 A EP 16701977A EP 3253352 B1 EP3253352 B1 EP 3253352B1
Authority
EP
European Patent Office
Prior art keywords
hydraulic
hydraulic cylinder
support surface
operating table
valve unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP16701977.7A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP3253352A1 (de
Inventor
Martin Staudinger
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
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Filing date
Publication date
Application filed by Maquet GmbH filed Critical Maquet GmbH
Priority to PL16701977T priority Critical patent/PL3253352T3/pl
Publication of EP3253352A1 publication Critical patent/EP3253352A1/de
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Publication of EP3253352B1 publication Critical patent/EP3253352B1/de
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/02—Adjustable operating tables; Controls therefor
    • A61G13/08—Adjustable operating tables; Controls therefor the table being divided into different adjustable sections
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/02—Adjustable operating tables; Controls therefor
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/02—Adjustable operating tables; Controls therefor
    • A61G13/04—Adjustable operating tables; Controls therefor tiltable around transverse or longitudinal axis
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61G—TRANSPORT, PERSONAL CONVEYANCES, OR ACCOMMODATION SPECIALLY ADAPTED FOR PATIENTS OR DISABLED PERSONS; OPERATING TABLES OR CHAIRS; CHAIRS FOR DENTISTRY; FUNERAL DEVICES
    • A61G13/00—Operating tables; Auxiliary appliances therefor
    • A61G13/10—Parts, details or accessories
    • 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
    • A61G13/128—Rests specially adapted therefor; Arrangements of patient-supporting surfaces with mechanical surface adaptations
    • A61G13/129—Rests specially adapted therefor; Arrangements of patient-supporting surfaces with mechanical surface adaptations having surface parts for adaptation of the size, e.g. for extension or reduction

Definitions

  • the invention relates to an operating table with a column, a bearing surface and a hydraulic unit.
  • the operating table includes a first pair of hydraulic cylinders for adjusting a first bearing surface portion of the bearing surface and a second pair of hydraulic cylinders for adjusting a second bearing surface portion of the bearing surface.
  • an operating table with a column, a bearing surface and a hydraulic unit arranged in one foot of the operating table is known.
  • a controller for controlling hydraulic cylinders located in the bearing surface is arranged on the column.
  • four hydraulic cylinders are used for adjusting various bearing surface portions of the bearing surface with a leg plate and a back plate.
  • two hoses per hydraulic cylinder are required according to the prior art.
  • eight hoses usually run from the control arranged on the column to the hydraulic cylinders located in the bearing surface.
  • the control arranged on the column is hydraulically connected to the hydraulic unit arranged in the foot of the operating table.
  • the known operating table has the disadvantage that the eight arranged from the arranged on the column control to the hydraulic cylinders located in the bearing surface have a relatively large cross-sectional area and thus require a relatively large space in the column. Furthermore, it is disadvantageous in the known operating table that in a longitudinal displacement of the bearing surface relative to the column all partially extending in the column and partially in the storage area eight hoses must be carried, which is relatively complicated and expensive.
  • a simpler and space-saving handling of hydraulic hoses is achieved, since in particular a first valve unit for controlling a first pair of hydraulic cylinders and a second valve unit for controlling a second pair of hydraulic cylinders are integrated into the bearing surface.
  • the first valve unit and the second valve unit are hydraulically connected to a hydraulic unit arranged in the column via only one feed line and one return line.
  • only one supply line and one return line or only two hydraulic hoses run between the hydraulic unit arranged in the column and the valve units integrated in the bearing surface.
  • d. H. only two hydraulic hoses are carried along.
  • the components integrated into the bearing surface are a first pair of hydraulic cylinders for adjusting a first bearing surface portion of the bearing surface, a second pair hydraulic cylinders for adjusting a second bearing surface portion of the bearing surface, a first valve unit for controlling the first pair of hydraulic cylinders, and a second valve unit for controlling the second pair of hydraulic cylinders and hydraulic lines from the valve units to the hydraulic cylinders.
  • the components integrated in the bearing surface may also comprise non-return valves integrated in the valve units.
  • the bearing surface is displaceable relative to the column in a longitudinal direction of the bearing surface along a Lssensverschiebungsweges.
  • the supply line and return line hydraulically connected to the hydraulic unit each comprise a hose which is at least partially laid in a region of the column facing a longitudinal side of the bearing surface in a compensation loop for bridging the longitudinal displacement path.
  • the first pair of hydraulic cylinders and / or the second pair of hydraulic cylinders form a hydraulic cylinder system having a first hydraulic cylinder and a second hydraulic cylinder for adjusting a bearing surface portion of the bearing surface of the operating table.
  • the first hydraulic cylinder and the second hydraulic cylinder are double-acting hydraulic cylinders with a first piston movement direction and a second piston movement direction.
  • a front in the first piston movement direction effective area of the first hydraulic cylinder and a front in the second piston movement direction effective area of the second hydraulic cylinder are equal.
  • a cylinder chamber of the first hydraulic cylinder adjoining the front active surface of the first hydraulic cylinder in the first piston movement direction and one in the second Piston movement direction front active surface of the second hydraulic cylinder adjacent cylinder space of the second hydraulic cylinder connected to each other via a connecting line.
  • the operating table comprises a third valve unit designed as a synchronization valve unit for synchronizing the synchronization of the first hydraulic cylinder and the second hydraulic cylinder, wherein in a synchronization operating state, the connection line via the third valve unit is selectively connectable to a pressure line connected to the hydraulic unit or to a return line connected to the hydraulic unit ,
  • the synchronism of the two double-acting hydraulic cylinders can be synchronized, so that in a synchronized operation state, the parallel operation of the two double-acting hydraulic cylinders is achieved.
  • the two double-acting hydraulic cylinders In parallel operation, the two double-acting hydraulic cylinders always move the same, i. H. they have the same piston movement direction and the same piston movement speed.
  • the piston movements of the first hydraulic cylinder and the second hydraulic cylinder are synchronous.
  • the third valve unit is closed in the synchronized operation state.
  • the connection line is connected neither to the pressure line connected to the hydraulic unit nor to the return line connected to the hydraulic unit.
  • the third valve unit has no influence on the double-acting hydraulic cylinders of the hydraulic cylinder system which are in parallel operation.
  • the Connecting line connected to the third valve unit line section In this case, in the connected to the third valve unit line section, a check valve is arranged, which is hydraulically unlocked in the direction of the third valve unit to the respective hydraulic cylinder system.
  • the check valve can be opened by the application of a hydraulic fluid pressure in the blocked direction and thus can be traversed by a hydraulic fluid.
  • the check valve in the direction opposite to the locked direction can always be traversed by the hydraulic fluid.
  • the first pair of hydraulic cylinders comprises a first hydraulic cylinder and a second hydraulic cylinder and the second pair of hydraulic cylinders comprises a third hydraulic cylinder and a fourth hydraulic cylinder.
  • the bearing surface has a first side rail and a second side rail opposite the first side rail.
  • the first hydraulic cylinder and the third hydraulic cylinder in the first side rail and the second hydraulic cylinder and the fourth hydraulic cylinder are arranged in the second side rail.
  • the first valve unit in the first side rail and the second valve unit are arranged in the second side rail.
  • the first hydraulic cylinder and the second hydraulic cylinder are each connected via one or two tubes to the first valve unit and the third hydraulic cylinder and the fourth hydraulic cylinder via one or two tubes to the second valve unit.
  • valve units arranged in the two opposite side rails of the bearing surface are respectively connected via two or four hydraulic hoses to the hydraulic cylinders of the first pair and to the hydraulic cylinders of the second pair.
  • one or two hydraulic hoses extend between the first side member and the second opposing side member of the bearing surface.
  • located between the valve units and the hydraulic cylinders located between the valve units and the hydraulic cylinders a total of four or eight hoses in the bearing surface.
  • a transverse connection for receiving those tubes is provided between the first side rail and the second side rail, which extend between the first side rail and the second side rail.
  • the cross connection with the first side rail and the second side rail is firmly connected.
  • the first pair of hydraulic cylinders comprise a first hydraulic cylinder and a second hydraulic cylinder and the second pair of hydraulic cylinders comprise a third hydraulic cylinder and a fourth hydraulic cylinder, the first hydraulic cylinder and the second hydraulic cylinder each having one or two hydraulic lines with the first valve unit and the third hydraulic cylinder and the fourth hydraulic cylinder are each connected via one or two hydraulic lines to the second valve unit.
  • a check valve is arranged in each valve unit, which is hydraulically unlocked in the direction of the first valve unit and the second valve unit to the respective hydraulic cylinder.
  • a double-pilot check valve system can be provided for each of the pairs of hydraulic cylinders, which enables safer operation of the hydraulic cylinders of the respective pair.
  • the column is disposed on a foot of the operating table, wherein the hydraulic unit disposed in the column does not extend into a region of the foot.
  • the hydraulic unit disposed in the column does not extend into a region of the foot.
  • the operating table comprises a hydraulic unit integrated into the column for generating a tilting and / or tilting movement of the bearing surface.
  • the operating table may comprise a hydraulic unit integrated in a foot of the operating table for raising or lowering the operating table.
  • the hydraulic unit integrated into the column and the hydraulic unit integrated into the foot of the operating table are hydraulically connected to the hydraulic unit only via a supply line and return line.
  • the bearing surface comprises a third bearing surface portion which is arranged between the first bearing surface portion and the second bearing surface portion.
  • the first bearing surface portion and the second bearing surface portion are each pivotally mounted on the third bearing surface portion.
  • the first bearing surface portion is pivotable relative to the third bearing surface portion by means of the first pair of hydraulic cylinders.
  • the second bearing surface portion is relative to the third bearing surface portion by means of of the second pair of hydraulic cylinders pivotable.
  • the first bearing surface portion includes a leg plate
  • the second bearing surface portion includes a back plate
  • the third bearing surface portion includes a base plate, which is also referred to as a seat plate.
  • the operating table preferably comprises an electric and / or hydraulic linear drive for displacing the bearing surface in relation to the column in a longitudinal direction of the bearing surface.
  • the operating table may comprise a linear electric drive with a gear for displacing the bearing surface with respect to the column in a longitudinal direction of the bearing surface, the gear being engaged with a rack which is displaced with rotation of the gear together with the bearing surface opposite the column.
  • Figure 1A shows an operating table 10 having a pillar 12 and a bearing surface 14 connected to the pillar 12.
  • the bearing surface 14 is connected to the upper end of the column 12 such that arranged by means of in the column 12 Drives the height and the edging and the inclination of the patient support surface 14 is adjustable.
  • a tilting movement for adjusting the inclination is a movement about an axis which extends transversely to the longitudinal direction of the bearing surface 14, while a Kantungsgon for adjusting the edging is a movement about an axis which is parallel to the longitudinal direction of the bearing surface 14.
  • the lower end of the column 12 is fixedly connected to a foot 2 of the operating table 10.
  • the bearing surface 14 comprises two different bearing surface portions 24, 26 which are pivotally mounted relative to each other.
  • the bearing surface portion 24 comprises a back plate 25, while the bearing surface portion 26 comprises a base plate 27.
  • the bearing surface 14 may comprise a further bearing surface portion with a leg plate as shown in FIG FIG. 1B is shown.
  • FIG. 1B Also shown in the column 12 and arranged behind a pillar trim hydraulic unit 16 is shown schematically.
  • the bearing surface 14 is fixedly connected to the column 12 and not removable.
  • the bearing surface 14 is slidable relative to the column 12 in a longitudinal direction of the bearing surface 14 along a longitudinal displacement path, as shown by the longitudinal displacement arrow 11.
  • the operating table 10 may also include an integrated in the foot 2 hydraulic unit for the extension of a traction drive.
  • the foot 2 rollers 4 of which at least two rollers are designed as casters, to move the operating table 10.
  • FIG. 1B shows the operating table Figure 1A which additionally has a leg plate 23 adjacent to the base plate 27.
  • FIG. 1B are also referred to as a pressure line feed line 51 and also referred to as a tank line return line 53 shown. It is in FIG. 1B the direction of a hydraulic fluid flowing through the supply line 51 and return line 53 is indicated in each case by an arrow.
  • the bearing surface 14 comprises the first bearing surface section 22 with the leg plate 23, the second bearing surface section 24 with the back plate 25 and the third bearing surface section 26 with the base plate 27.
  • the first bearing surface section 22 and the second bearing surface section 24 are each relative to the third bearing surface section 26 pivotable.
  • the hydraulic unit 16 arranged in the column 12 does not extend into a region of the foot 2.
  • FIG. 2A shows a perspective view of the separate from the column 12 bearing surface 14 of the operating table 10 after Figure 1A with removed base plate 27.
  • the bearing surface 14 has a first side rail 72 and a second side rail 74 opposite the first side rail 72.
  • the first side rail 72 is in FIG. 2A opened.
  • FIG. 2A For example, a hydraulic cylinder 32 of a first pair of hydraulic cylinders and a hydraulic cylinder 36 of a second pair of hydraulic cylinders are shown.
  • the respective opposite hydraulic cylinder of the first pair and the second pair are arranged in the second side rail 74 and in FIG. 2A not visible.
  • the first pair of hydraulic cylinders is provided to a first bearing surface portion of the bearing surface 14, such.
  • B. the in FIG. 1B shown bearing surface portion 22 with the leg plate 23 to adjust
  • the second pair of hydraulic cylinders is provided to a second bearing surface portion of the bearing surface 14, such.
  • B. the in FIGS. 1A to 2A shown bearing surface portion 24 with the back plate 25 to adjust.
  • the hydraulic cylinders 32, 36 comprise different connections 35 for hydraulic hoses.
  • the illustrated bearing surface 14 comprises a first valve unit 42, a second valve unit 44 and a third valve unit 46.
  • the first valve unit 42 integrated in the bearing surface 14 serves to control the first pair of hydraulic cylinders and the second valve unit 44 integrated into the bearing surface 14 serves to control the valve unit 42 second pair of hydraulic cylinders.
  • the function of the third integrated into the bearing surface 14 valve unit 46 will be described later with reference to FIGS. 4 to 6 explained in more detail.
  • FIG. 2A In turn, the supply line 51 and the return line 53 are shown.
  • the first valve unit 42 and the second valve unit 44 are hydraulically connected to the hydraulic unit 16 only via the supply line 51 and return line 53.
  • a cross link 60 is shown extending between the first side rail 72 and the second side rail 74.
  • the cross-connection 60 serves to receive hoses 61, which extend between the first side rail 72 and the second side rail 74 for connecting the valve units to the hydraulic cylinders.
  • the cross-connection 60 is preferably firmly connected to the first side rail 72 and the second side rail 74.
  • the bearing surface 14 includes leg cams 82, 84 for mounting the in FIG. 1B shown bearing surface portion 22 with the leg plate 23.
  • the Beinkloben 82, 84 are arranged for this purpose in the two opposite side rails 72, 74.
  • FIG. 2B shows a perspective view of the bearing surface 14 of the operating table 10 after Figure 1A with base plate 27 and partially opened side rail 72.
  • FIG. 2B only the hydraulic cylinder 32 can be seen, while the hydraulic cylinder 36 and arranged below the base plate 27 first to third valve unit 42, 44, 46, supply line 51 and return line 53 and cross-connection 60 are not visible.
  • FIG. 3 shows a plan view of the bearing surface 14 of the operating table 10 of Figure 1A with hidden back plate 25 and hatched base plate 27.
  • the hydraulic cylinders 36, 38 of the second pair which are arranged in the sections 73, 75 of the side rails 72, 74 below the hidden back plate 25 can be seen.
  • the direction of longitudinal displacement of the bearing surface 14 along a longitudinal displacement path is indicated by the longitudinal displacement arrow 11.
  • the column 12 with the in FIG. 3 shown column head 13 is arranged stationary.
  • the supply line 51 and return line 53 are at least partially laid in a region of the column 12 facing a longitudinal side of the bearing surface 14 in a compensation loop for bridging the distance traveled during the longitudinal displacement.
  • the operating table 10 comprises an electric linear drive with a gear 94 for generating the longitudinal displacement.
  • the gear 94 is engaged with a rack 92, so that upon rotation of the by an electric motor (not shown) driven gear 94, the bearing surface 14 moves relative to the column 12.
  • the operating table 10 may also comprise a hydraulic linear drive for generating the longitudinal displacement.
  • FIG. 4 shows a perspective view of a hydraulic cylinder system 40 with the first valve unit 42, the second valve unit 44 and formed as a synchronization valve unit third valve unit 46th Das in FIG. 4 shown hydraulic cylinder system 40 includes the hydraulic cylinder 32 and the hydraulic cylinder 34.
  • the hydraulic cylinder system 40 is formed by the first pair of hydraulic cylinders 32, 34.
  • the second pair of hydraulic cylinders 36, 38 of FIG. 3 form a corresponding hydraulic cylinder system.
  • the first hydraulic cylinder 32 and the second hydraulic cylinder 34 are connected to the first valve unit 42 via a hose 63, 65, respectively. Further, the first hydraulic cylinder 32 and the second hydraulic cylinder 34 are connected in series via a connecting tube 67. In this case, the connecting hose 67 via the formed as a synchronization valve unit third valve unit 46 optionally with the in FIG. 1B shown supply line 51 or with the in FIG. 1B shown return line 53 connectable.
  • Synchronization of the first hydraulic cylinder 32 and the second hydraulic cylinder 34 can be achieved. This will be explained below with reference to FIG. 5 and 6 explained in more detail.
  • FIG. 5 shows a schematic representation of the in FIG. 4 shown hydraulic cylinder system 40 with the first hydraulic cylinder 32 and the second hydraulic cylinder 34.
  • the first hydraulic cylinder 32 and the second hydraulic cylinder 34 are double-acting hydraulic cylinders having a first piston moving direction 102 and a second piston moving direction 104.
  • the first piston moving direction 102 and the second piston moving direction 104 are opposite to each other.
  • hydraulic cylinder system 40 are in the first piston movement direction 102 front active surface 112 of the first hydraulic cylinder 32 and one in the second piston movement direction 104 front effective area 114 of the second hydraulic cylinder 34 the same size.
  • connection line 105 shown in FIG. 4 shown connection hose 67, while the hydraulic lines 111, 113 of FIG. 5
  • the hoses 63, 65 of FIG. 4 include.
  • connection line 105 is also referred to as dead line.
  • hydraulic cylinder system 40 are the double-acting hydraulic cylinders 32, 34 each differential cylinder, the active surface 112 of the first hydraulic cylinder 32 is an annular piston surface and the active surface 114 of the second hydraulic cylinder 34 is a circular piston surface. Furthermore, the double-acting hydraulic cylinders 32, 34 can also be synchronized cylinders, wherein the active surface 112 of the first hydraulic cylinder 32 and the active surface 114 of the second hydraulic cylinder 34 are equal sized ring piston surfaces.
  • FIG. 6 shows a wiring diagram for the in FIG. 4 shown hydraulic cylinder system 40 with the first hydraulic cylinder 32 and the second hydraulic cylinder 34.
  • the circuit diagram includes a first directional control valve 142 and a second directional control valve 146.
  • the in FIG. 6 shown directional valves 142, 146 are for example 5/3 way valves.
  • the first directional control valve 142 corresponds to the check valves 132, 134 of FIG. 6 essentially the first valve unit 42 of FIG. 4 while the second directional valve 146 with the check valves 136 of FIG. 6 essentially the third valve unit 46 of FIG. 4 equivalent.
  • the connecting line 105 can be selectively connected via the second directional valve 146 to a pressure line 101 connected to the hydraulic unit 16 or to a return line 103 connected to the hydraulic unit 16.
  • pressure line 101 corresponds to the in FIG. 1 shown supply line 51
  • reflux line 103 of in FIG. 1B shown return line 53 corresponds.
  • the piston movements of the first hydraulic cylinder 32 and the second hydraulic cylinder 34 are synchronous.
  • the second directional valve 146 is closed, d. H. the connection line 105 is connected neither to the pressure line 101 nor to the return flow line 103.
  • the hydraulic cylinders 32, 34 are shown with the hydraulic lines 111, 113 and a line section 115 of the connecting line 105.
  • non-return valves 132, 134 are arranged in the hydraulic lines 111, 113, while a further check valve 136 is arranged in the line section 115.
  • the check valves 132, 134 form a double-release check valve system, which is arranged between the first directional control valve 142 and the hydraulic cylinders 32, 34.
  • the check valves 132, 134 of the double-pilot check valve system are in the direction of the respective Hydraulic cylinders 32, 34, ie in a direction opposite to the reverse direction, hydraulically unlocked.
  • check valve 136 is a pilot-operated check valve disposed between the second directional control valve 146 and the hydraulic cylinder system 40.
  • the pilot-operated check valve 136 is hydraulically unlockable in the direction of the hydraulic cylinder system 40, ie in a direction opposite to the reverse direction.
  • the pressure line 101 is connected to the pressure port of the pump of the hydraulic unit 16, while the reflux line 103 is connected to a tank of the hydraulic unit 16.
  • the mode of operation of the first directional valve 142 or of the second directional valve 146 will be explained below by way of example.
  • a basic position (“0") of the first directional valve 142 the first hydraulic line 111 is connected to the return line 103 via the first directional control valve 142.
  • the second hydraulic line 113 is connected to the return flow line 103 via the first directional control valve 142.
  • the basic position ("0") of the first directional control valve 142 no hydraulic fluid can flow out of the cylinder chambers 126, 128 of the hydraulic cylinders 32, 34, since the double-pilot non-return valve system is closed with the check valves 132, 134.
  • the first hydraulic line 111 is connected to the return line 103 via the first directional control valve 142.
  • the second hydraulic line 113 is connected to the pressure line 101 via the first directional control valve 142.
  • the cylinder chamber 128 of the second hydraulic cylinder 34 via the pressure line 101 and the second hydraulic line 113 can be pressurized, while the hydraulic fluid from the cylinder chamber 126 of the first hydraulic cylinder 32 via the first hydraulic line 111 and the reflux line 103 can drain.
  • a third position (II) of the first directional control valve 142 the first hydraulic line 111 is connected to the pressure line 101 via the first directional control valve 142. Further, in the third position (II) of the first directional control valve 142, the second hydraulic line 113 is connected to the return flow line 103 via the first directional control valve 142. In the third position (II) of the first directional control valve 142, the cylinder chamber 126 of the first hydraulic cylinder 32 via the pressure line 101 and the first hydraulic line 111 can be pressurized, while the hydraulic fluid from the cylinder chamber 128 of the second hydraulic cylinder 34 via the second hydraulic line 113 and the reflux line 103 can drain.
  • the first check valve 132 In the second position (I) of the first directional control valve 142, the first check valve 132 is unlocked, while in the third position (II) of the first directional control valve 142, the second check valve 134 is unlocked.
  • the synchronism of the hydraulic cylinders 32, 34 with the two different piston movement directions 104 and 102 can be realized.
  • the basic position (“0") of the first directional valve 142 in the basic position (“0") of the first directional valve 142, a drainage of the hydraulic fluid from the hydraulic cylinders 32, 34 can be avoided.
  • the line section 115 In a basic position ("0") of the second directional valve 146, the line section 115 is connected to the return line 103 via the second directional control valve 146. In a second position (I) of the second directional valve 146, the line section 115 is connected to the return line 103 via the second directional control valve 146. In a third position (II) of the second directional control valve 146, the line section 115 is connected to the pressure line 101 via the second directional control valve 146. In the normal position ("0") of the second directional control valve 146, no hydraulic fluid can flow out via the line section 115 and the return line 103, since the check valve 136 is locked.
  • the procedure for synchronizing the synchronization is, for example, as follows. First, the cylinder chamber 128 of the second hydraulic cylinder 34 is pressurized, while at the same time the hydraulic fluid from the cylinder chamber 126 of the first hydraulic cylinder 32 flows into the return line 103. As a result, the piston of the second hydraulic cylinder 34 and the piston of the (downstream) first hydraulic cylinder 32 move in Fig. 6 to the left or in the second piston movement direction 104th
  • the third valve unit 46 ie, the second directional control valve 146
  • the third valve unit 46 can be controlled so that the hydraulic fluid can flow out of the cylinder space 124 of the second hydraulic cylinder 34 via the communication line 105 and the reflux line 103.
  • the cylinder chamber 128 of the second hydraulic cylinder 34 can continue to be pressurized. As a result, finally reaches the piston of the second hydraulic cylinder 34 its end stop.
  • the third valve unit 46 (or the second directional control valve 146) may be controlled such that the cylinder space 122 of the first hydraulic cylinder 34 can be pressurized via the pressure line 101 and the connection line 105. Further, the hydraulic fluid from the cylinder chamber 126 of the first hydraulic cylinder 32 can continue to flow. As a result, finally reaches the piston of the first hydraulic cylinder 32 its end stop.
  • the cylinder chamber 126 of the first hydraulic cylinder 32 and located in the end stop piston of the first hydraulic cylinder 32 can be pressurized, while at the same time the hydraulic fluid from the cylinder chamber 128 of the second hydraulic cylinder 34 can flow. Furthermore, the third valve unit 46 (or the second directional control valve 146) is closed, so that no hydraulic fluid can flow out of the connection line 105. As a result, the piston of the first hydraulic cylinder 32 and the piston of the (downstream) second hydraulic cylinder 34 each move out of their end stops Fig. 6 to the right or in the first piston movement direction 102. Thus, a synchronization of the hydraulic cylinders 32, 34 in the first piston movement direction 102 can be achieved.
  • a synchronization of the hydraulic cylinders 32, 34 in the second piston movement direction 104 can be achieved with the aid of a correspondingly reverse procedure.
  • the synchronization of the synchronism of the hydraulic cylinders 32, 34 ie, the two double-acting hydraulic cylinders are always moving the same.
  • the above procedure can also be repeated.
  • the present invention has the following advantages over the prior art.
  • In the storage area of a known operating table usually four hydraulic cylinders, two each for the adjustment of the back plate and two each for the adjustment of the leg plate are arranged.
  • To supply them with hydraulic pressure usually two hoses per cylinder are necessary, which must be routed from the valves in the column or foot of the table to the cylinders.
  • a plurality of valve units and hydraulic hoses are arranged in the column.
  • the hydraulic unit is located in the foot of this operating table.
  • a hose line of eight hoses runs in the column head, where the package is divided into four tubes for the left side spar and four tubes for the right side spar.
  • This is disadvantageous in that a total of eight hoses from the column in the side rails of the bearing surface of the known operating table must be performed and must be carried especially in a longitudinal displacement of a patient support surface of the known operating table.
  • the known operating table has the disadvantage that it is relatively difficult to lay the hose package consisting of a total of eight hoses in a loop in order to compensate for a longitudinal displacement of the patient support surface, the travel of the longitudinal displacement can.
  • Embodiments of the present invention provide a hydraulically adjustable bearing surface of an operating table. It is advantageous that the valves or valve units can be accommodated directly where they are needed For example, a valve in each side rail 72, 74, one for the back and one for the leg plate.
  • a third valve 46 for a Beinplattensonderfunktion in particular for synchronizing the synchronization of the hydraulic cylinder system may be provided in the bearing surface 14. Since the cylinders, which are controlled by the respective valve, are arranged both in the first side rail and in the second side rail, it is advantageous to provide a hose connection 61 between the side rails 72, 74. It is advantageous that this tubing 61 is stationary between the bars 72, 74 and moves with a longitudinal displacement actuation.
  • the hydraulic connection between hydraulic unit 16 and bearing surface 14 is realized by means of a pressure 103 and a tank line 103, which are guided on one side of the bearing surface 14 in a serving as a compensation arc loop into the column 12.
  • the arrangement according to the invention makes it possible to use the installation space in the column 12 for the hydraulic unit 16.
  • a hydraulic unit in the foot 2 can be omitted, whereby it can be made lower.
  • the space situation is relaxed there for other assemblies.
  • the hydraulic unit can only be connected to the bearing surface 14 by means of two hoses (pressure and tank line). Savings potential here is not only the saving of hose lines but also a significant space gain because of the thinner hose package.
  • the loop for bridging the longitudinal displacement path 11 can be implemented only with two hoses 101, 103.
  • the usual installation of the hydraulic lines to bridge the longitudinal displacement path 11 with eight lines only under high installation space and installation costs is possible.
  • the path between the check valves and the cylinders can be minimized. It is true that the longer the distance between a check valve and a hydraulic cylinder, the softer the system and the more difficult is it to vent. The proximity or short distance between the check valve and the hydraulic cylinder helps to optimize the system for rigidity.
  • a modular table system can be constructed.
  • the hydraulic unit 16 is located in the column 12 and includes, in addition to a motor-pump unit, also the valves for actuating the column (eg for stroke, tilt and inclination).
  • Further hydraulic functions of the table can be used in the foot, in particular for foot placement and extension of the traction drive. be realized in the column head in particular for the longitudinal displacement and in the bearing surface in particular for the back and the leg operation. It was recognized that the valve technology for the modules foot, column, column head and bearing surface can be separated and accommodated in the respective assemblies.
  • a kit which allows to dispense with individual functions or to install, without the hydraulic system must be changed.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Accommodation For Nursing Or Treatment Tables (AREA)
  • Fluid-Pressure Circuits (AREA)
  • Machine Tool Units (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Biophysics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Optics & Photonics (AREA)
  • Pathology (AREA)
  • Radiology & Medical Imaging (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
EP16701977.7A 2015-02-05 2016-02-01 Operationstisch Active EP3253352B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL16701977T PL3253352T3 (pl) 2015-02-05 2016-02-01 Stół operacyjny

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015101657.5A DE102015101657A1 (de) 2015-02-05 2015-02-05 Operationstisch
PCT/EP2016/052044 WO2016124529A1 (de) 2015-02-05 2016-02-01 Operationstisch

Publications (2)

Publication Number Publication Date
EP3253352A1 EP3253352A1 (de) 2017-12-13
EP3253352B1 true EP3253352B1 (de) 2019-05-15

Family

ID=55262819

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16701977.7A Active EP3253352B1 (de) 2015-02-05 2016-02-01 Operationstisch

Country Status (10)

Country Link
US (1) US10912697B2 (ko)
EP (1) EP3253352B1 (ko)
JP (1) JP6695344B2 (ko)
KR (1) KR20170110642A (ko)
CN (1) CN107205877B (ko)
BR (1) BR112017014734A2 (ko)
DE (1) DE102015101657A1 (ko)
PL (1) PL3253352T3 (ko)
RU (1) RU2017131039A (ko)
WO (1) WO2016124529A1 (ko)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018118261B4 (de) * 2018-07-27 2022-08-11 HAWE Altenstadt Holding GmbH Fahrerloses Transportsystem
US11484450B2 (en) * 2018-10-08 2022-11-01 Stryker Corporation Patient support apparatus having bearing arrangement for deck extension assembly
US11445701B1 (en) * 2020-02-11 2022-09-20 Maryann Schero Grooming table side guards
USD986437S1 (en) * 2021-07-15 2023-05-16 Innovative Medical Products, Inc. Extruded base plate for a support table
USD987109S1 (en) * 2021-07-15 2023-05-23 Industrial Flow Solutions, Inc. Extruded base plate for an operating room table
CN113693869A (zh) * 2021-09-02 2021-11-26 固安博健生物技术有限公司 一种断肢断指再植手术台

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US2217783A (en) * 1938-06-09 1940-10-15 F O Schoedinger Operating table
US2520455A (en) * 1945-06-20 1950-08-29 Ritter Co Inc Surgical table with hydraulic adjusting system
US3176975A (en) * 1960-09-19 1965-04-06 Ritter Co Inc Surgical table
US3206188A (en) * 1961-08-28 1965-09-14 Shampaine Ind Inc Hydraulically actuated surgical operating tables
SE369577B (ko) 1972-04-18 1974-09-09 Elema Schoenander Ab
US4012031A (en) * 1975-03-25 1977-03-15 Affiliated Hospital Products, Inc. Lock valve flow control arrangement
US3982741A (en) * 1975-03-25 1976-09-28 Affiliated Hospital Products, Inc. Operating table or the like with geometrically compensated differentially movable load sharing multiple hydraulic cylinder and piston arrangement
DE3328908A1 (de) * 1983-08-10 1985-02-28 Stierlen-Maquet Ag, 7550 Rastatt Operationstisch
DE3704332A1 (de) * 1987-01-13 1988-07-21 Knapp Mikrohydraulik Gmbh Hydraulische betaetigungseinrichtung
US6038718A (en) * 1994-08-15 2000-03-21 Midmark Corporation Surgical table
CA2434996A1 (en) * 2001-01-25 2002-08-01 Hill-Rom Services, Inc. Hydraulic actuator apparatus for a surgical table
DE10321319A1 (de) * 2003-05-13 2004-12-02 Gerhard Hesse Verstellung für Medizinmöbel
CN1552297A (zh) 2003-05-29 2004-12-08 鼎众股份有限公司 手术台的同步行程油压单元
DE102005050856B4 (de) * 2005-10-24 2009-11-12 Herbert Brustmann Behandlungstisch
DE102005054223A1 (de) * 2005-11-14 2007-05-16 Maquet Gmbh & Co Kg Einrichtung zum Verstellen eines Operationstisches
CN2930684Y (zh) * 2006-03-10 2007-08-08 朱传文 气或液压可倾医用床
CN2912529Y (zh) * 2006-05-22 2007-06-20 吕其安 骑伏式自动升降肛肠检查治疗床
US8459173B2 (en) * 2009-07-10 2013-06-11 Amtai Medical Equipment, Inc. Bidirectional hydraulic system for operating table
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Also Published As

Publication number Publication date
KR20170110642A (ko) 2017-10-11
BR112017014734A2 (pt) 2018-01-09
RU2017131039A (ru) 2019-03-05
CN107205877B (zh) 2019-09-17
CN107205877A (zh) 2017-09-26
WO2016124529A1 (de) 2016-08-11
JP6695344B2 (ja) 2020-05-20
US20170325758A1 (en) 2017-11-16
PL3253352T3 (pl) 2020-01-31
RU2017131039A3 (ko) 2019-04-22
US10912697B2 (en) 2021-02-09
DE102015101657A1 (de) 2016-08-11
EP3253352A1 (de) 2017-12-13
JP2018508253A (ja) 2018-03-29

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