EP3253352B1 - Operating table - Google Patents
Operating table Download PDFInfo
- 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.)
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Links
- 238000006073 displacement reaction Methods 0.000 claims description 28
- 230000001360 synchronised effect Effects 0.000 claims description 14
- 239000012530 fluid Substances 0.000 description 18
- 238000010992 reflux Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000007688 edging Methods 0.000 description 2
- CCGPUGMWYLICGL-UHFFFAOYSA-N Neburon Chemical compound CCCCN(C)C(=O)NC1=CC=C(Cl)C(Cl)=C1 CCGPUGMWYLICGL-UHFFFAOYSA-N 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
Images
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
- A61G13/02—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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Description
Die Erfindung betrifft einen Operationstisch mit einer Säule, einer Lagerfläche und einem Hydraulikaggregat. Der Operationstisch umfasst ein erstes Paar von Hydraulikzylindern zum Verstellen eines ersten Lagerflächenabschnitts der Lagerfläche und ein zweites Paar von Hydraulikzylindern zum Verstellen eines zweiten Lagerflächenabschnitts der Lagerfläche.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.
Aus dem Stand der Technik
Der bekannte Operationstisch hat den Nachteil, dass die von der an der Säule angeordneten Steuerung zu den in der Lagerfläche befindlichen Hydraulikzylindern verlaufenden acht Schläuche eine relativ große Querschnittsfläche haben und somit relativ viel Platz in der Säule benötigen. Ferner ist es bei dem bekannten Operationstisch nachteilig, dass bei einer Längsverschiebung der Lagerfläche gegenüber der Säule alle teilweise in der Säule und teilweise in der Lagerfläche verlaufenden acht Schläuche mitgeführt werden müssen, was relativ kompliziert und aufwendig ist.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.
Ausgehend von dem bekannten Stand der Technik ist es Aufgabe der Erfindung, einen Operationstisch anzugeben, der einen einfachen und platzsparenden Aufbau hat.Based on the known prior art, it is an object of the invention to provide an operating table, which has a simple and space-saving design.
Diese Aufgabe wird durch einen Operationstisch mit den Merkmalen des Anspruchs 1 gelöst. Vorteilhafte Weiterbildungen sind in den abhängigen Ansprüchen angegeben.This object is achieved by an operating table with the features of claim 1. Advantageous developments are specified in the dependent claims.
Durch einen Operationstisch mit den Merkmalen des Anspruchs 1 wird eine einfachere und platzsparendere Handhabung von Hydraulikschläuchen erreicht, da insbesondere eine erste Ventileinheit zum Steuern eines ersten Paares von Hydraulikzylindern und eine zweite Ventileinheit zum Steuern eines zweiten Paares von Hydraulikzylindern in die Lagerfläche integriert sind. Die erste Ventileinheit und die zweite Ventileinheit sind über nur eine Zuleitung und eine Rückleitung hydraulisch mit einem in der Säule angeordneten Hydraulikaggregat verbunden. Somit verlaufen zwischen dem in der Säule angeordneten Hydraulikaggregat und den in die Lagerfläche integrierten Ventileinheiten nur eine Zuleitung und eine Rückleitung bzw. nur zwei Hydraulikschläuche. Ferner müssen bei einer Längsverschiebung der Lagerfläche relativ zur Säule nur die mit dem Hydraulikaggregat hydraulisch verbundene Zuleitung und Rückleitung, d. h. nur zwei Hydraulikschläuche, mitgeführt werden. Dadurch kann einerseits in der Säule Platz gespart werden, und andererseits kann gleichzeitig das Mitführen der Hydraulikschläuche bei einer Längsverschiebung der Lagerfläche gegenüber der Säule vereinfacht werden. Dies ermöglicht bei dem Operationstisch die einfachere und platzsparendere Handhabung der Hydraulikschläuche.By an operating table with the features of claim 1, 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. Thus, 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. Furthermore, in a longitudinal displacement of the bearing surface relative to the column only the hydraulically connected to the hydraulic unit supply and return line, d. H. only two hydraulic hoses are carried along. As a result, space can be saved on the one hand in the column, and on the other hand, at the same time the entrainment of the hydraulic hoses can be simplified with a longitudinal displacement of the bearing surface relative to the column. This allows for the operating table simpler and space-saving handling of the hydraulic hoses.
Bei einer Neigungs- und/oder Kantungsbewegung der Lagerfläche bewegen sich alle Komponenten, die in die Lagerfläche integriert sind, mit. Vorzugsweise sind die in die Lagerfläche integrierten Komponenten ein erstes Paar von Hydraulikzylindern zum Verstellen eines ersten Lagerflächenabschnitts der Lagerfläche, ein zweites Paar von Hydraulikzylindern zum Verstellen eines zweiten Lagerflächenabschnitts der Lagerfläche, eine erste Ventileinheit zum Steuern des ersten Paares von Hydraulikzylindern und eine zweite Ventileinheit zum Steuern des zweiten Paares von Hydraulikzylindern sowie Hydraulikleitungen von den Ventileinheiten zu den Hydraulikzylindern. Ferner können die in die Lagerfläche integrierten Komponenten auch Rückschlagventile umfassen, die in den Ventileinheiten integriert sind.During a tilting and / or tilting movement of the bearing surface, all components that are integrated into the bearing surface move with. Preferably, 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. Furthermore, the components integrated in the bearing surface may also comprise non-return valves integrated in the valve units.
Vorzugsweise ist die Lagerfläche gegenüber der Säule in eine Längsrichtung der Lagerfläche entlang eines Längsverschiebungsweges verschiebbar. Dabei umfassen die mit dem Hydraulikaggregat hydraulisch verbundene Zuleitung und Rückleitung jeweils einen Schlauch, die zumindest teilweise in einem einer Längsseite der Lagerfläche zugewandten Bereich der Säule in einer Ausgleichsschleife zur Überbrückung des Längsverschiebungsweges verlegt sind. Dadurch kann bei einer Längsverschiebung der Lagerfläche gegenüber der Säule der Längsverschiebungsweg ausgeglichen werden, ohne dass die Schläuche der mit dem Hydraulikaggregat hydraulisch verbundenen Zuleitung und Rückleitung zu stark gedehnt oder sogar beschädigt werden.Preferably, the bearing surface is displaceable relative to the column in a longitudinal direction of the bearing surface along a Längsverschiebungsweges. In this case, 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. As a result, in the case of a longitudinal displacement of the bearing surface relative to the column, the longitudinal displacement path can be compensated without the hoses of the supply line and return line hydraulically connected to the hydraulic unit being stretched too much or even damaged.
Vorzugsweise bilden das erste Paar von Hydraulikzylindern und/oder das zweite Paar von Hydraulikzylindern ein Hydraulikzylindersystem mit einem ersten Hydraulikzylinder und einem zweiten Hydraulikzylinder zum Verstellen eines Lagerflächenabschnitts der Lagerfläche des Operationstischs. Dabei sind der erste Hydraulikzylinder und der zweite Hydraulikzylinder doppeltwirkende Hydraulikzylinder mit einer ersten Kolbenbewegungsrichtung und einer zweiten Kolbenbewegungsrichtung. Ferner sind eine in der ersten Kolbenbewegungsrichtung vordere Wirkfläche des ersten Hydraulikzylinders und eine in der zweiten Kolbenbewegungsrichtung vordere Wirkfläche des zweiten Hydraulikzylinders gleich groß. Ferner sind ein an die in der ersten Kolbenbewegungsrichtung vordere Wirkfläche des ersten Hydraulikzylinders angrenzender Zylinderraum des ersten Hydraulikzylinders und ein an die in der zweiten Kolbenbewegungsrichtung vordere Wirkfläche des zweiten Hydraulikzylinders angrenzender Zylinderraum des zweiten Hydraulikzylinders über eine Verbindungsleitung miteinander verbunden. Dadurch kann ein Hydraulikzylindersystem mit zwei doppeltwirkenden Hydraulikzylindern realisiert werden, mit dem ein Lagerflächenabschnitt der Lagerfläche kontrolliert verstellt werden kann. Es ist vorteilhaft, dass mit diesem Hydraulikzylindersystem ein paralleler Betrieb bzw. der Gleichlauf der zwei doppeltwirkenden Hydraulikzylinder erreicht werden kann.Preferably, 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. In this case, 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. Further, 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. Furthermore, 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. Thereby, a hydraulic cylinder system can be realized with two double-acting hydraulic cylinders, with which a bearing surface portion of the bearing surface can be adjusted controlled. It is advantageous that with this hydraulic cylinder system a parallel operation or the synchronization of the two double-acting hydraulic cylinders can be achieved.
Vorzugsweise umfasst der Operationstisch eine als Synchronisationsventileinheit ausgebildete dritte Ventileinheit zur Synchronisation des Gleichlaufs des ersten Hydraulikzylinders und des zweiten Hydraulikzylinders, wobei in einem Synchronisationsbetriebszustand die Verbindungsleitung über die dritte Ventileinheit wahlweise mit einer mit dem Hydraulikaggregat verbundenen Druckleitung oder mit einer mit dem Hydraulikaggregat verbundenen Rückflussleitung verbindbar ist. Dadurch kann in einem Synchronisationsbetriebszustand der Gleichlauf der zwei doppeltwirkenden Hydraulikzylinder synchronisiert werden, sodass in einem Gleichlaufbetriebszustand der parallele Betrieb bzw. der Gleichlauf der zwei doppeltwirkenden Hydraulikzylinder erreicht wird. Im parallelen Betrieb bewegen sich die zwei doppeltwirkenden Hydraulikzylinder immer gleich, d. h. sie haben die gleiche Kolbenbewegungsrichtung und die gleiche Kolbenbewegungsgeschwindigkeit.Preferably, 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 , Thereby, in a synchronization mode, 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. 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.
Vorzugsweise sind in einem Gleichlaufbetriebszustand die Kolbenbewegungen des ersten Hydraulikzylinders und des zweiten Hydraulikzylinders synchron. Dabei ist die dritte Ventileinheit im Gleichlaufbetriebszustand geschlossen. Wenn die dritte Ventileinheit geschlossen ist, ist die Verbindungsleitung weder mit der mit dem Hydraulikaggregat verbundenen Druckleitung noch mit der mit dem Hydraulikaggregat verbundenen Rückflussleitung verbunden. Im Gleichlaufbetriebszustand hat die dritte Ventileinheit keinen Einfluss auf die sich im parallelen Betrieb befindlichen doppeltwirkenden Hydraulikzylinder des Hydraulikzylindersystems. Vorzugsweise hat die Verbindungsleitung einen mit der dritten Ventileinheit verbundenen Leitungsabschnitt. Dabei ist in dem mit der dritten Ventileinheit verbundenen Leitungsabschnitt ein Rückschlagventil angeordnet, das in Richtung von der dritten Ventileinheit zu dem jeweiligen Hydraulikzylindersystem hydraulisch entsperrbar ist. Dadurch kann erreicht werden, dass das Rückschlagventil durch die Beaufschlagung mit einem Hydraulikflüssigkeitsdruck auch in der gesperrten Richtung geöffnet und somit von einer Hydraulikflüssigkeit durchflossen werden kann. Andererseits kann das Rückschlagventil in der der gesperrten Richtung entgegengesetzten Richtung immer von der Hydraulikflüssigkeit durchflossen werden.Preferably, in a synchronized mode, the piston movements of the first hydraulic cylinder and the second hydraulic cylinder are synchronous. In this case, the third valve unit is closed in the synchronized operation state. When the third valve unit is closed, 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. In the synchronized operating state, the third valve unit has no influence on the double-acting hydraulic cylinders of the hydraulic cylinder system which are in parallel operation. Preferably, 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. It can thereby be achieved that 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. On the other hand, the check valve in the direction opposite to the locked direction can always be traversed by the hydraulic fluid.
Vorzugsweise umfasst das erste Paar von Hydraulikzylindern einen ersten Hydraulikzylinder und einen zweiten Hydraulikzylinder und das zweite Paar von Hydraulikzylindern einen dritten Hydraulikzylinder und einen vierten Hydraulikzylinder. Dabei hat die Lagerfläche einen ersten Seitenholm und einen dem ersten Seitenholm gegenüberliegenden zweiten Seitenholm. Ferner sind der erste Hydraulikzylinder und der dritte Hydraulikzylinder in dem ersten Seitenholm und der zweite Hydraulikzylinder und der vierte Hydraulikzylinder in dem zweiten Seitenholm angeordnet. Ferner sind die erste Ventileinheit in dem ersten Seitenholm und die zweite Ventileinheit in dem zweiten Seitenholm angeordnet. Ferner sind der erste Hydraulikzylinder und der zweite Hydraulikzylinder jeweils über einen oder zwei Schläuche mit der ersten Ventileinheit und der dritte Hydraulikzylinder und der vierte Hydraulikzylinder jeweils über einen oder zwei Schläuche mit der zweiten Ventileinheit verbunden. Dadurch kann eine Konfiguration realisiert werden, bei der die in den zwei gegenüberliegenden Seitenholmen der Lagerfläche angeordneten Ventileinheiten jeweils über zwei bzw. vier Hydraulikschläuche mit den Hydraulikzylindern des ersten Paares bzw. mit den Hydraulikzylindern des zweiten Paares verbunden sind. Dabei erstrecken sich jeweils ein oder zwei Hydraulikschläuche zwischen dem ersten Seitenholm und dem zweiten gegenüberliegenden Seitenholm der Lagerfläche. Für den Fall, dass die Hydraulikzylinder des ersten Paares und die Hydraulikzylinder des zweiten Paares in die Lagerfläche integriert sind, befinden sich zwischen den Ventileinheiten und den Hydraulikzylindern insgesamt vier bzw. acht Schläuche in der Lagerfläche. Diese vier bzw. acht Schläuche benötigen keinen Platz in der Säule und können bei einer Längsverschiebung der Lagerfläche gegenüber der Säule einfach mitgeführt werden.Preferably, 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. In this case, the bearing surface has a first side rail and a second side rail opposite the first side rail. Further, 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. Further, the first valve unit in the first side rail and the second valve unit are arranged in the second side rail. Furthermore, 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. Thereby, a configuration can be realized in which the 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. In each case, one or two hydraulic hoses extend between the first side member and the second opposing side member of the bearing surface. In the event that the hydraulic cylinders of the first pair and the hydraulic cylinders of the second Pair are integrated into the bearing surface, located between the valve units and the hydraulic cylinders a total of four or eight hoses in the bearing surface. These four or eight hoses require no space in the column and can easily be carried along with a longitudinal displacement of the bearing surface relative to the column.
Vorzugsweise ist zwischen dem ersten Seitenholm und dem zweiten Seitenholm eine Querverbindung zur Aufnahme derjenigen Schläuche vorgesehen, die sich zwischen dem ersten Seitenholm und dem zweiten Seitenholm erstrecken. Dabei ist die Querverbindung mit dem ersten Seitenholm und dem zweiten Seitenholm fest verbunden. Dadurch können die sich zwischen den zwei gegenüberliegenden Seitenholmen erstreckenden Hydraulikschläuche in der Querverbindung sicher aufgenommen und bei einer Längsverschiebung der Lagerfläche gegenüber der Säule einfach mitgeführt werden. Dabei behalten die mitgeführten Hydraulikschläuche immer die gleiche Position relativ zur Lagerfläche.Preferably, 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. In this case, the cross connection with the first side rail and the second side rail is firmly connected. As a result, the hydraulic hoses extending between the two opposite side rails can be securely received in the transverse connection and can easily be carried along with the longitudinal displacement of the bearing surface with respect to the column. The entrained hydraulic hoses always keep the same position relative to the bearing surface.
Vorzugsweise umfassen das erste Paar von Hydraulikzylindern einen ersten Hydraulikzylinder und einen zweiten Hydraulikzylinder und das zweite Paar von Hydraulikzylindern einen dritten Hydraulikzylinder und einen vierten Hydraulikzylinder, wobei der erste Hydraulikzylinder und der zweite Hydraulikzylinder jeweils über eine oder zwei Hydraulikleitungen mit der ersten Ventileinheit und der dritte Hydraulikzylinder und der vierte Hydraulikzylinder jeweils über eine oder zwei Hydraulikleitungen mit der zweiten Ventileinheit verbunden sind. Dabei ist in jeder Ventileinheit ein Rückschlagventil angeordnet, das in Richtung von der ersten Ventileinheit bzw. von der zweiten Ventileinheit zu dem jeweiligen Hydraulikzylinder hydraulisch entsperrbar ist. Dadurch kann für jedes der Paare von Hydraulikzylindern ein doppelt entsperrbares Rückschlagventilsystem vorgesehen werden, das einen sichereren Betrieb der Hydraulikzylinder des jeweiligen Paares ermöglicht.Preferably, 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. In this case, 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. Thereby, 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.
Vorzugsweise ist die Säule auf einem Fuß des Operationstischs angeordnet, wobei sich das in der Säule angeordnete Hydraulikaggregat nicht bis in einen Bereich des Fußes erstreckt. Somit kann eine vollständige Integration des Hydraulikaggregats in die Säule erreicht werden. Dadurch, dass sich das Hydraulikaggregat nicht bis in einen Bereich des Fußes erstreckt, kann die Höhe des Fußes verringert werden.Preferably, 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. Thus, a complete integration of the hydraulic unit can be achieved in the column. The fact that the hydraulic unit does not extend into a region of the foot, the height of the foot can be reduced.
Vorzugsweise umfasst der Operationstisch eine in die Säule integrierte Hydraulikeinheit zum Erzeugen einer Neigungs- und/oder Kantungsbewegung der Lagerfläche. Ferner kann der Operationstisch eine in einen Fuß des Operationstischs integrierte Hydraulikeinheit zum Anheben oder Absenken des Operationstischs umfassen. Dabei sind die in die Säule integrierte Hydraulikeinheit und die in den Fuß des Operationstischs integrierte Hydraulikeinheit nur über eine Zuleitung und Rückleitung hydraulisch mit dem Hydraulikaggregat verbunden. Dadurch kann ein modulares Operationstischsystem realisiert werden, bei dem jede Baugruppe (Lagerfläche, Säule und Fuß) sein eigenes Hydraulikventil und zugeordnete Hydraulikzylindern hat. Die Hydraulikeinheiten der verschiedenen Baugruppen des modularen Operationstischsystems können unabhängig voneinander betrieben werden. Dadurch, dass die Hydraulikeinheiten unabhängig voneinander betrieben werden können, können einzelne Hydraulikeinheiten für bestimmte Funktionen des Operationstischsystems auch weggelassen werden, ohne dass das gesamte Operationstischsystem geändert werden muss.Preferably, the operating table comprises a hydraulic unit integrated into the column for generating a tilting and / or tilting movement of the bearing surface. Furthermore, 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. Thereby, a modular operating table system can be realized in which each assembly (bearing surface, column and foot) has its own hydraulic valve and associated hydraulic cylinders. The hydraulic units of the various modules of the modular operating table system can be operated independently of each other. The fact that the hydraulic units can be operated independently of each other, individual hydraulic units for certain functions of the operating table system can also be omitted without the entire operating table system must be changed.
Vorzugsweise umfasst die Lagerfläche einen dritten Lagerflächenabschnitt, der zwischen dem ersten Lagerflächenabschnitt und dem zweiten Lagerflächenabschnitt angeordnet ist. Dabei sind der erste Lagerflächenabschnitt und der zweite Lagerflächenabschnitt jeweils an dem dritten Lagerflächenabschnitt schwenkbar gelagert. Ferner ist der erste Lagerflächenabschnitt relativ zu dem dritten Lagerflächenabschnitt mittels des ersten Paares von Hydraulikzylindern verschwenkbar. Ferner ist der zweite Lageflächenabschnitt relativ zu dem dritten Lagerflächenabschnitt mittels des zweiten Paares von Hydraulikzylindern verschwenkbar. Ferner umfassen der erste Lagerflächenabschnitt eine Beinplatte, der zweite Lagerflächenabschnitt eine Rückenplatte und der dritte Lagerflächenabschnitt eine Basisplatte, die auch als Sitzplatte bezeichnet wird. Dadurch können die Rückenplatte und die Beinplatte jeweils relativ zur Basisplatte einer Patientenlagerfläche flexibel verschwenkt werden.Preferably, the bearing surface comprises a third bearing surface portion which is arranged between the first bearing surface portion and the second bearing surface portion. In this case, the first bearing surface portion and the second bearing surface portion are each pivotally mounted on the third bearing surface portion. Further, the first bearing surface portion is pivotable relative to the third bearing surface portion by means of the first pair of hydraulic cylinders. Furthermore, the second bearing surface portion is relative to the third bearing surface portion by means of of the second pair of hydraulic cylinders pivotable. Further, the first bearing surface portion includes a leg plate, the second bearing surface portion includes a back plate and the third bearing surface portion includes a base plate, which is also referred to as a seat plate. As a result, the back plate and the leg plate can each be flexibly pivoted relative to the base plate of a patient support surface.
Vorzugsweise umfasst der Operationstisch einen elektrischen und/oder hydraulischen Linearantrieb zum Verschieben der Lagerfläche gegenüber der Säule in eine Längsrichtung der Lagerfläche. Insbesondere kann der Operationstisch einen elektrischen Linearantrieb mit einem Zahnrad zum Verschieben der Lagerfläche gegenüber der Säule in eine Längsrichtung der Lagerfläche umfassen, wobei das Zahnrad mit einer Zahnstange in Eingriff steht, die bei einer Drehung des Zahnrads zusammen mit der Lagerfläche gegenüber der Säule verschoben wird. Durch das Vorsehen eines elektrischen und/oder hydraulischen Linearantriebs kann eine zuverlässige lineare Längsverschiebung der Lagerfläche gegenüber der Säule erreicht werden.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. In particular, 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. By providing an electric and / or hydraulic linear drive, a reliable linear longitudinal displacement of the bearing surface relative to the column can be achieved.
Weitere Merkmale und Vorteile der Erfindung ergeben sich aus der nachfolgenden Beschreibung, die die Erfindung anhand von Ausführungsbeispielen im Zusammenhang mit den beigefügten Figuren näher erläutert.Further features and advantages of the invention will become apparent from the following description, which illustrates the invention with reference to embodiments in conjunction with the accompanying figures.
Es zeigen:
- Figur 1A
- einen Operationstisch mit einer Säule und einer mit der Säule verbundenen Lagerfläche mit einer Rückenplatte und einer Basisplatte;
- Figur 1B
- den Operationstisch nach
Figur 1A , der zusätzlich eine an die Basisplatte angrenzende Beinplatte hat; - Figur 2A
- eine perspektivische Ansicht der Lagerfläche des Operationstischs nach
Figur 1A mit entfernter Basisplatte und geöffnetem Seitenholm; - Figur 2B
- eine weitere perspektivische Ansicht der Lagerfläche des Operationstischs nach
Figur 1A mit Basisplatte und teilweise geöffnetem Seitenholm; - Figur 3
- eine Draufsicht auf die Lagerfläche des Operationstischs nach
Figur 1A mit ausgeblendeter Rückenplatte und ausgeblendeter Basisplatte; Figur 4- eine perspektivische Ansicht eines von der Lagerfläche nach
Figur 2A getrennten Hydraulikzylindersystems mit einer ersten Ventileinheit, einer zweiten Ventileinheit und einer als Synchronisationsventileinheit ausgebildeten dritten Ventileinheit; - Figur 5
- eine schematische Darstellung eines Teils des in
gezeigten Hydraulikzylindersystems mit einem ersten Hydraulikzylinder und einem zweiten Hydraulikzylinder; undFigur 4 - Figur 6
- einen Schaltplan des in
gezeigten Hydraulikzylindersystems.Figur 4
- Figure 1A
- an operating table having a pillar and a bearing surface connected to the pillar, having a back plate and a base plate;
- FIG. 1B
- after the operating table
Figure 1A additionally having a leg plate adjacent to the base plate; - FIG. 2A
- a perspective view of the bearing surface of the operating table after
Figure 1A with removed base plate and opened side rail; - FIG. 2B
- another perspective view of the bearing surface of the operating table after
Figure 1A with base plate and partially opened side rail; - FIG. 3
- a plan view of the bearing surface of the operating table after
Figure 1A with hidden back plate and hidden base plate; - FIG. 4
- a perspective view of one of the bearing surface after
FIG. 2A a separate hydraulic cylinder system having a first valve unit, a second valve unit and a third valve unit designed as a synchronization valve unit; - FIG. 5
- a schematic representation of a part of in
FIG. 4 shown hydraulic cylinder system with a first hydraulic cylinder and a second hydraulic cylinder; and - FIG. 6
- a schematic of the in
FIG. 4 shown hydraulic cylinder system.
Bei dem in
Wie in
In
Die in
In
In
Wie in
In
Wie in
Wie in
Bei dem in
Mit dem in
Im Gleichlaufbetriebszustand sind die Kolbenbewegungen des ersten Hydraulikzylinders 32 und des zweiten Hydraulikzylinders 34 synchron. Dabei ist das zweite Wegeventil 146 geschlossen, d. h. die Verbindungsleitung 105 ist weder mit der Druckleitung 101 noch mit der Rückflussleitung 103 verbunden.In the synchronized operation state, the piston movements of the first
Die Hydraulikzylinder 32, 34 sind mit den Hydraulikleitungen 111, 113 sowie ein Leitungsabschnitt 115 der Verbindungsleitung 105 gezeigt. Wie in
Im Folgenden wird die Funktionsweise des ersten Wegeventils 142 bzw. des zweiten Wegeventils 146 beispielhaft erläutert. In einer Grundstellung ("0") des ersten Wegeventils 142 ist die erste Hydraulikleitung 111 über das erste Wegeventil 142 mit der Rückflussleitung 103 verbunden. Ferner ist in der Grundstellung ("0") des ersten Wegeventils 142 die zweite Hydraulikleitung 113 über das erste Wegeventil 142 mit der Rückflussleitung 103 verbunden. In der Grundstellung ("0") des ersten Wegeventils 142 kann keine Hydraulikflüssigkeit aus den Zylinderräumen 126, 128 der Hydraulikzylinder 32, 34 abfließen, da das doppelt entsperrbare Rückschlagventilsystem mit den Rückschlagventilen 132, 134 geschlossen ist.The mode of operation of the first
In einer zweiten Stellung (I) des ersten Wegeventils 142 ist die erste Hydraulikleitung 111 über das erste Wegeventil 142 mit der Rückflussleitung 103 verbunden. Ferner ist in der zweiten Stellung (I) des ersten Wegeventils 142 die zweite Hydraulikleitung 113 über das erste Wegeventil 142 mit der Druckleitung 101 verbunden. In der zweiten Stellung (I) des ersten Wegeventils 142 kann der Zylinderraum 128 des zweiten Hydraulikzylinders 34 über die Druckleitung 101 und die zweite Hydraulikleitung 113 mit Druck beaufschlagt werden, während die Hydraulikflüssigkeit aus dem Zylinderraum 126 des ersten Hydraulikzylinders 32 über die erste Hydraulikleitung 111 und die Rückflussleitung 103 abfließen kann.In a second position (I) of the first
In einer dritten Stellung (II) des ersten Wegeventils 142 ist die erste Hydraulikleitung 111 über das erste Wegeventil 142 mit der Druckleitung 101 verbunden. Ferner ist in der dritten Stellung (II) des ersten Wegeventils 142 die zweite Hydraulikleitung 113 über das erste Wegeventil 142 mit der Rückflussleitung 103 verbunden. In der dritten Stellung (II) des ersten Wegeventil 142 kann der Zylinderraum 126 des ersten Hydraulikzylinders 32 über die Druckleitung 101 und die erste Hydraulikleitung 111 mit Druck beaufschlagt werden, während die Hydraulikflüssigkeit aus dem Zylinderraum 128 des zweiten Hydraulikzylinders 34 über die zweite Hydraulikleitung 113 und die Rückflussleitung 103 abfließen kann.In a third position (II) of the first
In der zweiten Stellung (I) des ersten Wegeventils 142 ist das erste Rückschlagventil 132 entsperrt, während in der dritten Stellung (II) des ersten Wegeventils 142 das zweite Rückschlagventil 134 entsperrt ist. Somit kann in der zweiten Stellung (I) und in der dritten Stellung (II) des ersten Wegeventils 142 der Gleichlauf der Hydraulikzylinder 32, 34 mit den zwei verschiedenen Kolbenbewegungsrichtungen 104 bzw. 102 realisiert werden. Ferner kann in der Grundstellung ("0") des ersten Wegeventils 142 ein Abfließen der Hydraulikflüssigkeit aus den Hydraulikzylindern 32, 34 vermieden werden.In the second position (I) of the first
In einer Grundstellung ("0") des zweiten Wegeventils 146 ist der Leitungsabschnitt 115 über das zweite Wegeventil 146 mit der Rückflussleitung 103 verbunden. In einer zweiten Stellung (I) des zweiten Wegeventils 146 ist der Leitungsabschnitt 115 über das zweite Wegeventil 146 mit der Rückflussleitung 103 verbunden. In einer dritten Stellung (II) des zweiten Wegeventils 146 ist der Leitungsabschnitt 115 über das zweite Wegeventil 146 mit der Druckleitung 101 verbunden. In der Grundstellung ("0") des zweiten Wegeventils 146 kann keine Hydraulikflüssigkeit über den Leitungsabschnitt 115 und die Rückflussleitung 103 abfließen, da das Rückschlagventil 136 gesperrt ist. In der zweiten Stellung (I) des zweiten Wegeventils 146 kann die Hydraulikflüssigkeit aus der Verbindungsleitung 105 über den Leitungsabschnitt 115 und die Rückflussleitung 103 abfließen, da das Rückschlagventil 136 entsperrt ist. In der dritten Stellung (II) des zweiten Wegeventils 146 kann die Verbindungsleitung 105 über den Leitungsabschnitt 115 und die Druckleitung 101 mit Druck beaufschlagt werden. Somit kann in der zweiten Stellung (I) und in der dritten Stellung (II) des zweiten Wegeventils 146 Hydraulikflüssigkeit aus der Verbindungsleitung 105 abfließen bzw. die Verbindungsleitung 105 mit Druck beaufschlagt werden. Dadurch kann die Synchronisation des Gleichlaufs der Hydraulikzylinder 32, 34 erreicht werden.In a basic position ("0") of the second
Die Vorgehensweise zur Synchronisation des Gleichlaufs ist beispielsweise wie folgt. Zunächst wird der Zylinderraum 128 des zweiten Hydraulikzylinders 34 mit Druck beaufschlagt, während gleichzeitig die Hydraulikflüssigkeit aus dem Zylinderraum 126 des ersten Hydraulikzylinders 32 in die Rückflussleitung 103 abfließt. Dadurch bewegen sich der Kolben des zweiten Hydraulikzylinders 34 und der Kolben des (nachgeschalteten) ersten Hydraulikzylinders 32 in
Falls das Volumen der Hydraulikflüssigkeit in der Verbindungsleitung 105 für synchrone Kolbenbewegungen des ersten Hydraulikzylinders 32 und des zweiten Hydraulikzylinders 34 zu groß ist, erreicht zunächst der Kolben des ersten Hydraulikzylinders 32 seinen Endanschlag, während der Kolben des zweiten Hydraulikzylinders 34 zu diesem Zeitpunkt seinen Endanschlag noch nicht erreicht. In diesem Fall kann die dritte Ventileinheit 46, d. h. das zweite Wegeventil 146, so gesteuert werden, dass die Hydraulikflüssigkeit aus dem Zylinderraum 124 des zweiten Hydraulikzylinders 34 über die Verbindungsleitung 105 und die Rückflussleitung 103 abfließen kann. Ferner kann der Zylinderraum 128 des zweiten Hydraulikzylinders 34 weiterhin mit Druck beaufschlagt werden. Dadurch erreicht schließlich auch der Kolben des zweiten Hydraulikzylinders 34 seinen Endanschlag.If the volume of the hydraulic fluid in the synchronous
Falls das Volumen der Hydraulikflüssigkeit in der Verbindungsleitung 105 für synchrone Kolbenbewegungen des ersten Hydraulikzylinders 32 und des zweiten Hydraulikzylinders 34 zu klein ist, erreicht zunächst der Kolben des zweiten Hydraulikzylinders 34 seinen Endanschlag, während der Kolben des ersten Hydraulikzylinders 32 zu diesem Zeitpunkt seinen Endanschlag noch nicht erreicht. In diesem Fall kann die dritte Ventileinheit 46 (bzw. das zweite Wegeventil 146) so gesteuert werden, dass der Zylinderraum 122 des ersten Hydraulikzylinders 34 über die Druckleitung 101 und die Verbindungsleitung 105 mit Druck beaufschlagt werden kann. Ferner kann die Hydraulikflüssigkeit aus dem Zylinderraum 126 des ersten Hydraulikzylinders 32 weiterhin abfließen. Dadurch erreicht schließlich auch der Kolben des ersten Hydraulikzylinders 32 seinen Endanschlag.If the volume of the hydraulic fluid in the synchronous
Danach kann der Zylinderraum 126 des ersten Hydraulikzylinders 32 bzw. der sich im Endanschlag befindliche Kolben des ersten Hydraulikzylinders 32 mit Druck beaufschlagt werden, während gleichzeitig die Hydraulikflüssigkeit aus dem Zylinderraum 128 des zweiten Hydraulikzylinders 34 abfließen kann. Ferner ist dabei die dritte Ventileinheit 46 (bzw. das zweite Wegeventil 146) geschlossen, so dass keine Hydraulikflüssigkeit aus der Verbindungsleitung 105 abfließen kann. Dadurch bewegen sich der Kolben des ersten Hydraulikzylinders 32 und der Kolben des (nachgeschalteten) zweiten Hydraulikzylinders 34 jeweils aus ihren Endanschlägen heraus in
Ferner kann auch mit Hilfe einer entsprechend umgekehrten Vorgehensweise ein Gleichlauf der Hydraulikzylinder 32, 34 in die zweite Kolbenbewegungsrichtung 104 erreicht werden. Somit kann die Synchronisation des Gleichlaufs der Hydraulikzylinder 32, 34 (d. h. die zwei doppeltwirkenden Hydraulikzylinder bewegen sich immer gleich) realisiert werden. Des Weiteren kann die oben genannte Vorgehensweise auch wiederholt durchgeführt werden.Furthermore, a synchronization of the
Die vorliegende Erfindung hat gegenüber dem bekannten Stand der Technik insbesondere die folgenden Vorteile. In der Lagerfläche eines bekannten Operationstischs sind üblicherweise vier Hydraulikzylinder, jeweils zwei für die Verstellung der Rückenplatte und jeweils zwei für die Verstellung der Beinplatte, angeordnet. Um diese mit hydraulischem Druck zu versorgen, sind üblicherweise zwei Schläuche pro Zylinder notwendig, welche von den Ventilen in Säule oder Fuß des Tisches bis zu den Zylindern verlegt werden müssen. Hierdurch ergibt sich im Stand der Technik ein Schlauchstrang von acht Schläuchen, welcher zu Bauraumproblemen führt.In particular, 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. This results in the prior art, a hose of eight tubes, which leads to space problems.
Bei bekannten Operationstischen sind eine Vielzahl von Ventileinheiten und Hydraulikschläuchen in der Säule angeordnet. Das Hydraulikaggregat ist im Fuß dieses Operationstischs angeordnet. Von den Ventileinheiten in der Säule verläuft nun ein Schlauchstrang aus acht Schläuchen in den Säulenkopf, wo sich das Paket aufteilt in vier Schläuche für den linken Seitenholm und vier Schläuche für den rechten Seitenholm. Dies ist dahingehend nachtheilhaft, dass insgesamt acht Schläuche von der Säule in die Seitenholme der Lagerfläche des bekannten Operationstischs geführt werden müssen und insbesondere bei einer Längsverschiebung einer Patientenlagerfläche des bekannten Operationstischs mitgeführt werden müssen. Ferner hat der bekannte Operationstisch den Nachteil, dass es relativ schwierig ist, das aus insgesamt acht Schläuchen bestehende Schlauchpaket in einer Schleife zu verlegen, um bei einer Längsverschiebung der Patientenlagerfläche den Verfahrweg der Längsverschiebung ausgleichen zu können.In known operating tables, 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. From the valve units in the column now 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. Furthermore, 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.
Ausführungsbeispiele der vorliegenden Erfindung schaffen eine hydraulisch verstellbare Lagerfläche eines Operationstischs. Dabei ist es vorteilhaft, dass die Ventile bzw. Ventileinheiten direkt dort untergebracht werden können, wo sie auch benötigt werden, nämlich in den Seitenholmen 72, 74 der Lagerfläche 14. Beispielsweise liegt ein Ventil in jedem Seitenholm 72, 74, eines für die Rückenbetätigung und eines für die Beinplatte. Zusätzlich kann ein drittes Ventil 46 für eine Beinplattensonderfunktion, insbesondere für die Synchronisation des Gleichlaufs des Hydraulikzylindersystems, in der Lagerfläche 14 vorgesehen sein. Da die Zylinder, welche von dem jeweiligen Ventil angesteuert werden, sowohl in dem ersten Seitenholm und in dem zweiten Seitenholm angeordnet sind, ist es vorteilhaft, zwischen den Seitenholmen 72, 74 eine Verschlauchung 61 vorzusehen. Dabei ist es vorteilhaft, dass diese Verschlauchung 61 ortsfest zwischen den Holmen 72, 74 liegt und sich bei einer Längsverschiebungsbetätigung mitbewegt. Die hydraulische Verbindung zwischen Hydraulikaggregat 16 und Lagerfläche 14 wird mittels einer Druck- 103 und einer Tankleitung 103 realisiert, welche auf einer Seite der Lagerfläche 14 in einer als Ausgleichsbogen dienende Schleife in die Säule 12 geführt werden.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
Die erfindungsgemäße Anordnung ermöglicht es, den Bauraum in der Säule 12 für das Hydraulikaggregat 16 zu verwenden. Somit kann ein Hydraulikaggregat im Fuß 2 entfallen, wodurch dieser niedriger ausgeführt werden kann. Außerdem wird die Bauraumsituation dort für andere Baugruppen entspannter. Ferner kann das Hydraulikaggregat nur mittels zweier Schläuche (Druck- und Tankleitung) mit der Lagerfläche 14 verbunden werden. Einsparpotential ist hier nicht nur das Einsparen von Schlauchleitungen sondern auch ein deutlicher Bauraumgewinn wegen des dünneren Schlauchpakets. Ferner kann die Schleife zum Überbrücken des Längsverschiebungsweges 11 nur mit zwei Schläuchen 101, 103 umgesetzt werden. Dagegen ist die übliche Verlegung der Hydraulikleitungen zur Überbrückung des Längsverschiebungsweges 11 mit acht Leitungen nur unter hohem Bauraum- und Montageaufwand möglich. Ferner kann der Weg zwischen den Sperrventilen und den Zylindern minimiert werden. Dabei gilt, dass je länger die Strecke zwischen einem Sperrventil und einem Hydraulikzylinder ist, desto weicher ist das System und desto schwieriger ist es zu entlüften. Die Nähe bzw. die kurze Strecke zwischen dem Sperrventil und dem Hydraulikzylinder hilft, um das System bezüglich der Steifigkeit zu optimieren.The arrangement according to the invention makes it possible to use the installation space in the
Ferner kann ein modulares Tischsystem aufgebaut werden. Beispielsweise befindet sich das Hydraulikaggregat 16 in der Säule 12 und beinhaltet außer einer Motor-Pumpen-Einheit auch die Ventile zur Betätigung der Säule (z. B. für Hub, Kantung und Neigung). Weitere hydraulische Funktionen des Tisches können im Fuß insbesondere für die Fußaufstellung und das Ausfahren des Fahrantriebs. im Säulenkopf insbesondere für die Längsverschiebung und in der Lagerfläche insbesondere für die Rückenbetätigung und die Beinbetätigung realisiert werden. Es wurde erkannt, dass die Ventiltechnik für die Baugruppen Fuß, Säule, Säulenkopf und Lagerfläche getrennt und in den jeweiligen Baugruppen untergebracht werden können. Somit kann bei der Entwicklung weiterer Operationstische und Tischvarianten auf einen Baukasten zurückgegriffen werden, der es erlaubt, einzelne Funktionen entfallen zu lassen oder mit zu verbauen, ohne dass das Hydrauliksystem verändert werden muss. Es können dann beispielsweise für einen Tisch ohne Fahrantrieb die Ventile im Fuß entfallen, oder es kann für einen Tisch beispielsweise ohne Längsverschiebung das Ventil im Säulenkopf entfallen. Dabei ist es vorteilhaft, dass das restliche System und das Hydraulikaggregat hierbei unverändert bleiben. Auch kann der Fuß 2 einfach weggelassen und die Säule 12 direkt mit dem Fußboden verbunden werden.Furthermore, a modular table system can be constructed. For example, the
- 22
- Fußfoot
- 44
- Rollerole
- 1010
- Operationstischoperating table
- 1212
- Säulepillar
- 1414
- Lagerflächestorage area
- 1616
- Hydraulikaggregathydraulic power unit
- 22, 24, 2622, 24, 26
- LagerflächenabschnittBearing surface section
- 2323
- Beinplatteleg section
- 2525
- Rückenplattebackplate
- 2727
- Basisplattebaseplate
- 32, 34, 36, 3832, 34, 36, 38
- Hydraulikzylinderhydraulic cylinders
- 4040
- HydraulikzylindersystemHydraulic cylinder system
- 42, 44, 4642, 44, 46
- Ventileinheitvalve unit
- 5151
- Zuleitungsupply
- 5353
- Rückleitungreturn
- 6060
- Querverbindungcross connection
- 63, 6563, 65
- Schlauchtube
- 72, 7472, 74
- Seitenholmside rail
- 82, 8482, 84
- KlobenKloben
- 9292
- Zahnstangerack
- 9494
- Zahnradgear
- 101101
- Druckleitungpressure line
- 102, 104102, 104
- KolbenbewegungsrichtungPiston movement direction
- 103103
- RückflussleitungReturn line
- 105105
- Verbindungsleitungconnecting line
- 111, 113111, 113
- Hydraulikleitunghydraulic line
- 112, 114112, 114
- Wirkflächeeffective area
- 115115
- Leitungsabschnittline section
- 122, 124, 126, 128122, 124, 126, 128
- Zylinderraumcylinder space
- 132, 134, 136132, 134, 136
- Rückschlagventilcheck valve
- 142, 146142, 146
- Wegeventilway valve
Claims (15)
- An operating table (10) with a column (12), a support surface (14) and a hydraulic power unit (16) arranged in the column (12);
having a first pair of hydraulic cylinders (32, 34) for adjusting a first support surface segment (22) of the support surface (14);
having a second pair of hydraulic cylinders (36, 38) for adjusting a second support surface segment (24) of the support surface (14);
and as characterizing special features:having a first valve unit (42) integrated into the support surface (14) for controlling the first pair of hydraulic cylinders (32, 34); andhaving a second valve unit (44) integrated into the support surface (14) for controlling the second pair of hydraulic cylinders (36, 38);wherein the first valve unit (42) and the second valve unit (44) are hydraulically connected to the hydraulic power unit (16) via a supply line (51) and a return line (53) only. - The operating table (10) as claimed in claim 1, wherein, in case of a tilting and/or tipping movement of the support surface (14), all components integrated into the support surface (14) also will move.
- The operating table (10) as claimed in any of the claims 1 or 2, wherein the support surface (14) is displaceable relatively to the column (12) in a longitudinal direction of the support surface (14) along a longitudinal displacement path, wherein the supply line (51) and the return line (53) hydraulically connected to hydraulic power unit (16) each comprise a hose at least partially installed in an area of the column (12) facing a longitudinal side of the support surface (14) in a compensation loop for spanning the longitudinal displacement path.
- The operating table (10) as claimed in any of the claims 1 to 3, wherein the first pair of hydraulic cylinders (32, 34) and/or the second pair of hydraulic cylinders (36, 38) form a hydraulic cylinder system (40) having a first hydraulic cylinder (32) and a second hydraulic cylinder (34) for adjusting a support surface segment (22) of support surface (14) of operating table (10), wherein the first hydraulic cylinder (32) and the second hydraulic cylinder (34) are double-acting hydraulic cylinders with a first piston movement direction (102) and a second piston movement direction (104), wherein a front acting surface (112) of the first hydraulic cylinder (32) in the first piston movement direction (102) and a front acting surface (114) of the second hydraulic cylinder (34) in the second piston movement direction (104) are equal, wherein a cylinder space (122) of the first hydraulic cylinder (32) adjacent to the front acting surface (112) of the first hydraulic cylinder (32) in the first piston movement direction (102) and a cylinder space (124) of the second hydraulic cylinder (34) adjacent to the second acting surface (114) of the second hydraulic cylinder (34) in the second piston movement direction (104) are interconnected via a connection line (105).
- The operating table (10) as claimed in claim 4, having a third valve unit (46), designed as synchronization valve unit, for synchronization of synchronism of the first hydraulic cylinder (32) and the second hydraulic cylinder (34), wherein, in a synchronization operating state, the connection line (105) can be selectively connected, via the third valve unit (46), to a pressure line (101) connected to the hydraulic power unit (16) or to a return flow line (103) connected to the hydraulic power unit (16).
- The operating table (10) as claimed in claim 5, wherein, in a synchronous operating state, the piston movement of the first hydraulic cylinder (32) and the second hydraulic cylinder (34) is synchronous, wherein the third valve unit (46) is closed in the synchronous operating state.
- The operating table (10) as claimed in claim 5 or 6, wherein the connection line (105) has a line section (115) connected to the third valve unit (46), wherein a non-return valve (136), which can be hydraulically unlocked in a direction to the corresponding hydraulic cylinder system (40), is arranged in the line section (115) connected to the third valve unit (46).
- The operating table (10) as claimed in any of the claims 1 to 7, wherein the first pair of hydraulic cylinders (32, 34) comprises a first hydraulic cylinder (32) and a second hydraulic cylinder (34), and the second pair of hydraulic cylinders (36, 38) comprises a third hydraulic cylinder (36) and a fourth hydraulic cylinder (38), wherein the support surface (14) has a first side member (72) and a second side member (74) opposite to the first side member (72), wherein the first hydraulic cylinder (32) and the third hydraulic cylinder (36) is arranged in the first side member (72), and the second hydraulic cylinder (34) and the fourth hydraulic cylinder (38) are arranged in the second side member (74), wherein the first valve unit (42) is arranged in the first side member (72) and the second valve unit (44) is arranged in the second side member (74), wherein the first hydraulic cylinder (32) and the second hydraulic cylinder (34) each are connected to the first valve unit (42) via a hose (63, 65), and the third hydraulic cylinder (36) and the fourth hydraulic cylinder (38) each are connected to the second valve unit (44) via a hose.
- The operating table (10) as claimed in claim 8, wherein a transverse connection (60) is provided between the first side member (72) and the second side member (74) for receiving such hoses extending between the first side member (72) and the second side member (74), wherein the transverse connection (60) is firmly connected to the first side member (72) and to the second side member (74).
- The operating table (10) as claimed in any of the claims 1 to 9, wherein the first pair of hydraulic cylinders (32, 34) comprises a first hydraulic cylinder (32) and a second hydraulic cylinder (34), and the second pair of hydraulic cylinders (36, 38) comprises a third hydraulic cylinder (36) and a fourth hydraulic cylinder (38), wherein the first hydraulic cylinder (32) and the second hydraulic cylinder (34) each are connected to the first valve unit (42) via a hydraulic line (111, 113), and the third hydraulic cylinder (36) and the fourth hydraulic cylinder (38) each are connected to the second valve unit (44) via a hydraulic line, wherein a non-return valve (132, 134), which can be hydraulically unlocked in a direction to the corresponding hydraulic cylinder, is arranged in each valve unit (42, 44).
- The operating table (10) as claimed in any of the claims 1 to 10, wherein the column (12) is arranged on a foot (2) of the operating table (10), wherein the hydraulic power unit (16) arranged in the column (12) does not extend into an area of the foot (2).
- The operating table (10) as claimed in any of the claims 1 to 11, having a hydraulic unit integrated into the column (12) for creating a tilting and/or tipping movement of the support surface (14), having a hydraulic unit integrated into a foot (2) of the operating table (10) for extending a travel drive, wherein the hydraulic unit integrated into the column (12) and the hydraulic unit integrated into the foot (2) of the operating table (10) are hydraulically connected to the hydraulic power unit (16) only via a supply line and return line.
- The operating table (10) as claimed in any of the claims 1 to 12, wherein the support surface (14) comprises a third support surface segment (26) arranged between the first support surface segment (22) and the second support surface segment (24), wherein the first support surface segment (22) and the second support surface segment (24) each are pivotably supported at the third support surface segment (26), wherein the first support surface segment (22) can be swiveled relatively to the third support surface segment (26) via the first pair of hydraulic cylinders (32, 34), wherein the second support surface segment (24) can be swiveled relatively to the third support surface segment (26) via the second pair of hydraulic cylinders (36, 38), wherein the first support surface segment (22) comprises a leg plate (23), the second support surface segment (24) comprises a back plate (25), and the third support surface segment (26) comprises a base plate (27).
- The operating table (10) as claimed in any of the claims 1 to 13, wherein the operating table (10) comprises an electric and/or hydraulic linear drive for displacing the support surface (14) relatively to the column (12) in a longitudinal direction of the support surface (14).
- The operating table (10) as claimed in any of the claims 1 to 13, wherein the operating table (10) comprises an electric linear drive with a toothed gear (94) for displacing the support surface (14) relatively to the column (12) in a longitudinal direction of the support surface (14), wherein the toothed gear (94) engages a rack (92), and the support surface (14) is displaced relatively to the column (12) when turning the toothed gear (94).
Priority Applications (1)
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PL16701977T PL3253352T3 (en) | 2015-02-05 | 2016-02-01 | Operating table |
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DE102015101657.5A DE102015101657A1 (en) | 2015-02-05 | 2015-02-05 | operating table |
PCT/EP2016/052044 WO2016124529A1 (en) | 2015-02-05 | 2016-02-01 | Operating table |
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EP (1) | EP3253352B1 (en) |
JP (1) | JP6695344B2 (en) |
KR (1) | KR20170110642A (en) |
CN (1) | CN107205877B (en) |
BR (1) | BR112017014734A2 (en) |
DE (1) | DE102015101657A1 (en) |
PL (1) | PL3253352T3 (en) |
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2016
- 2016-02-01 JP JP2017539003A patent/JP6695344B2/en active Active
- 2016-02-01 BR BR112017014734-3A patent/BR112017014734A2/en not_active Application Discontinuation
- 2016-02-01 WO PCT/EP2016/052044 patent/WO2016124529A1/en active Application Filing
- 2016-02-01 EP EP16701977.7A patent/EP3253352B1/en active Active
- 2016-02-01 CN CN201680008739.4A patent/CN107205877B/en active Active
- 2016-02-01 PL PL16701977T patent/PL3253352T3/en unknown
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- 2016-02-01 RU RU2017131039A patent/RU2017131039A/en not_active Application Discontinuation
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2017
- 2017-07-28 US US15/663,319 patent/US10912697B2/en active Active
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US10912697B2 (en) | 2021-02-09 |
JP2018508253A (en) | 2018-03-29 |
CN107205877A (en) | 2017-09-26 |
RU2017131039A3 (en) | 2019-04-22 |
DE102015101657A1 (en) | 2016-08-11 |
BR112017014734A2 (en) | 2018-01-09 |
WO2016124529A1 (en) | 2016-08-11 |
JP6695344B2 (en) | 2020-05-20 |
KR20170110642A (en) | 2017-10-11 |
CN107205877B (en) | 2019-09-17 |
EP3253352A1 (en) | 2017-12-13 |
PL3253352T3 (en) | 2020-01-31 |
US20170325758A1 (en) | 2017-11-16 |
RU2017131039A (en) | 2019-03-05 |
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