Lift column for a surgical support
OwnerJurgen Knapp, Robert Geigerinventors
Life of this patent
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Abstract
A lift column suitable for use in a patient rest or operating table, or for industrial applications, is disclosed. The lift column is a simple compact structure without service members or other elements extending laterally beyond the confines of the lift column. The maximum travel of the lift column is greater than the structural height of the column. Furthermore, the patient rest or operating table can be swung about two horizontal axes which are perpendicular to each other.
Claims31
Lift column for a raisable and lowerable carrier member, having a swing beam (25) bearing the carrier member and capable of being moved up and down by means of hydraulic cylinders (12, 17, 19, 21) for a controlled vertical travel and for being swung about two horizontal axes (S1, S2) perpendicular to each other for a tip or tilt motion, with at least one first lift cylinder having a housing (11) acting between a lower member (4) connected to a base (2) of the lift column and an upper member (7) connected to the swing beam (25) for a reciprocating motion of the upper member in an axis of vertical travel (VH), with at least one second and one third lift cylinder each acting on the swing beam (25) arranged over the said upper member (7) in areas spatially displaced from each other, characterized in that at least one fourth lift cylinder (21) is provided, likewise acting on the swing beam (25) spatially displaced from the second and third lift cylinders 19), and in that the second and third and fourth lift cylinders (17, 19, 21) connect the upper member (7) to the swing beam (25), for which uses they act between the upper member (7) and the swing beam (25), and each acts in one of areas of action, spatially displaced from each other, of the upper member (7), and in that cylinder housings (18, 20, 22) of the second, third and fourth lift cylinders (17, 19, 21) are each rigidly fixed to the upper member (7), and the piston rods (23, 26, 28) of the second, third and fourth lift cylinders (17, 19, 21) are each connected to the swing beam (25) by way of an articulation (24, 27, 29) forming the areas of action on which the lift cylinders (17, 19, 21) act on said swing beam (25).
Lift column for a raisable and lowerable carrier member, having a swing beam (25) bearing the carrier member and capable of being moved up and down by means of hydraulic cylinders (12, 17, 19, 21) for a controlled vertical travel and for being swung about two horizontal axes (S1, S2) perpendicular to each other for a tip or tilt motion, with at least one first lift cylinder (12) having a housing (11) acting between a lower member (4) connected to a base (2) of the lift column and an upper member (7) connected to the swing beam (25) for a reciprocating motion of the upper member in an axis of vertical travel (VH), with at least one second and one third lift cylinder each acting on the swing beam (25) arranged over the said upper member (7) in areas spatially displaced from each other, characterized in that at least one fourth lift cylinder (21) is provided, likewise acting on the swing beam (25) spatially displaced from the second and third lift cylinders (17, 19), and in that the second, third and fourth lift cylinders (17, 19, 21) connect the upper member (7) to the swing beam (25), for which purposes they act between the upper member (7) and the swing beam (25), and each acts in one of areas of action, spatially displaced from each other, of the upper member (7), and in that the areas of action of the second, third and fourth lift cylinders (17, 19, 21) on the upper member (7) in each instance form the vertices of a triangle.
Lift column for a raisable and lowerable carrier member, having a swing beam (25) bearing the carrier member and capable of being moved up and down by means of hydraulic cylinders (12, 17, 19, 21) for a controlled vertical travel and for being swung about two horizontal axes (S1, S2) perpendicular to each other for a tip or tilt motion, with at least one first lift cylinder (12) having a housing (11) acting between a lower member (4) connected to a base (2) of the lift column and an upper member (7) connected to the swing beam (25) for a reciprocating motion of the upper member in an axis of vertical travel (VH), with at least one second and one third lift cylinder each acting on the swing beam (25) arranged over the said upper member (7) in areas spatially displaced from each other, characterized in that at least one fourth lift cylinder (21) is provided, likewise acting on the swing beam (25) spatially displaced from the second and third lift cylinders (17, 19), and in that the second, third and fourth lift cylinders (17, 19, 21) connect the upper member (7) to the swing beam (25), for which purposes they act between the upper member (7) and the swing beam (25), and each acts in one of areas of action, spatially displaced from each other, of the upper member (7), and in that the area of action of the second lift cylinder (17) is formed by an articulation (24) exclusively permitting a swing about at least two axes extending perpendicular to each other.
Lift column for a raisable and lowerable carrier member, having a swing beam (25) bearing the carrier member and capable of being moved up and down by means of hydraulic cylinders (12, 17, 19, 21) for a controlled vertical travel and for being swung about two horizontal axes (S1, S2) perpendicular to each other for a tip or tilt motion, with at least one first lift cylinder (12) having a housing (11) acting between a lower member (4) connected to a base (2) of the lift column and an upper member (7) connected to the swing beam (25) for a reciprocating motion of the upper member in an axis of vertical travel (VH) with at least one second and one third lift cylinder each acting on the swing beam (25) arranged over the said upper member (7) in areas spatially displaced from each other, characterized in that at least one fourth lift cylinder (21) is provided, likewise acting on the swing beam (25) spatially displaced from the second and third lift cylinders (17, 19), and in that the second, third and fourth lift cylinders (17, 19, 21) connect the upper member (7) to the swing beam (25), for which purposes they act between the upper member (7) and the swing beam (25), and each acts in one of areas of action, spatially displaced from each other, of the upper member (7), and in that said lift cylinders (12, 17, 19, 21) each are double-acting cylinders comprising two chambers separated by a piston, each chamber having a fitting, and in that the chambers of the lift cylinders (12, 17, 19, 21) are connected via their fittings in series between a first output (44) and a second output (45) of at least one control division (41).
Lift column for a raisable and lowerable carrier member having a swing beam (25) bearing the carrier member and capable of being moved up and down by means of hydraulic cylinders (12, 17, 19, 21) for a controlled vertical travel and for being swung about two horizontal axes (S1, S2) perpendicular to each other for a tip or tilt motion, with a least one first lift cylinder (12) having a housing (11) acting between a lower member (4) connected to a base (2) of the lift column and an upper member (7) connected to the swing beam (25) for a reciprocating motion of the upper member in an axis of vertical travel (VH), with at least one second and one third lift cylinder each acting on the swing beam (25) arranged over the said upper member (7) in areas spatially displaced from each other, characterized in that at least one fourth lift cylinder (21) is provided, likewise acting on the swing beam (25) spatially displaced from the second and third lift cylinders (17, 19), and in that the second, third and fourth lift cylinders (17, 19, 21) connect the upper member (7) to the swing beam (25), for which purposes they act between the upper member (7) and the swing beam (25), and each acts in areas, spatially displaced from each other, of the upper member (7), and in that one axis of swing of articulations (27, 29) lies within the swing beam (25).
Lift column for a raisable and lowerable carrier member, having a swing beam (25) bearing the carrier member and capable of being moved up and down by means of hydraulic cylinders (12, 17, 19, 21) for a controlled vertical travel and for being swung about two horizontal axes (S1, S2) perpendicular to each other for a tip or tilt motion, with at least one first lift cylinder (12) having a housing (11) acting between a lower member (4) connected to a base (2) of the lift column and an upper member (7) connected to the swing beam (25) for a reciprocating motion of the upper member in an axis of vertical travel (VH), with at least one second and one third lift cylinder each acting on the swing beam (25) arranged over the said upper member (7) in areas spatially displaced from each other, characterized in that at least one fourth lift cylinder (21) is provided, likewise acting on the swing beam (25) spatially displaced from the second and third lift cylinders (17, 19), and in that the second, third and fourth lift cylinders (17, 19, 21) connect the upper member (7) to the swing beam (25), for which purposes they act between the upper member (7) and the swing beam (25), and each acts in one of areas of action, spatially displaced from each other, of the upper member (7), and in that guide rails (56) are attached to upper ends of piston rods of the second, third and fourth lift cylinders (17, 19, 21), which guide rails are guided on guide rails (57) on said upper member (7).
Dependencies are inferred from the claim text.