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Publication numberUS3866899 A
Publication typeGrant
Publication dateFeb 18, 1975
Filing dateMay 31, 1973
Priority dateJun 8, 1972
Also published asCA989925A, CA989925A1, DE2327029A1
Publication numberUS 3866899 A, US 3866899A, US-A-3866899, US3866899 A, US3866899A
InventorsLee Norman John
Original AssigneeMatburn Holdings Ltd
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Operation tables and chairs
US 3866899 A
Abstract
A surgical operation table or chair has a base. A support column is fixed to the base and is inclined with respect to the vertical. A movable support is slidable with respect to the inclined support column so that it can be moved up and down with respect to the base. A patient-supporting means such as a table top or seat is carried by the movable support. Means is provided for raising and lowering the movable support.
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Description  (OCR text may contain errors)

United States Patent [1 1 Lee [ 1 Feb. 18, 1975 [75] Inventor:

[ OPERATION TABLES AND CHAIRS Norman John Lee, London, England [73] Assignee: Matburn (Holdings) Limited,

London, England 22 Filed: May 31,1973

21 Appl. No.: 365,468

[30] Foreign Application Priority Data June 8, 1972 Great Britain 26732/72 [52] US. Cl. 269/322, 254/93 R, 308/3 R [51] llnt. Cl. A6lg 13/00 [58] Field of Search 269/322-325;

308/3 R, 3.6, 3.8, 4 R, 4 L, 6 R, 6 B; 92/177, 178; 254/2 R, 2 C, 93 R [56] References Cited UNITED STATES PATENTS 2,832,656 4/1958 Perry 269/325 2,871,085 l/l959 Diack 308/38 3,171,698 3/1965 308/38 3,328,093 6/1967 308/6 B 3,389,625 6/1968 308/6 R 3,719,403 3/1973 Sung 308/3 Primary Examiner-Roy Lake Assistant ExaminerNeil Abrams Attorney, Agent, or FirmWilliam R. Liberman [5 7] ABSTRACT A surgical operation table or chair has a base. A support column is fixed to the base and is inclined with respect to the vertical. A movable support is slidable with respect to the inclined support column so that it can be moved up and down with respect to the base. A patient-supporting means such as a table top or seat is carried by the movable support. Means is provided for raising and lowering the movable support.

1 Claim, 3 Drawing Figures SHEET 2 OF 2 PATENTEB FEB] 81975 1 OPERATION TABLES AND CHAIRS BACKGROUND OF THE INVENTION Surgical operation tables normally comprise a padent-supporting platform or table top which is supported on a movable or fixed base in such a way that the height of the table top with respect to the base can be adjusted as desired. The support and height adjustment mechanism is usually relatively complicated and expensive. An object of the present invention is to provide a simple way of supporting the table top.

BRIEF DESCRIPTION OF THE ACCOMPANYING DRAWINGS FIG. 1 is an elevation of an operation table, and, FIGS. 2 and 3 are fragmentary views of part of a support means of the table.

DESCRIPTION OF A PREFERRED EMBODIMENT In the illustrated embodiment of the invention, a surgical operation table comprises a movable base 1 although if desired the base may be fixed. A support column 2 of rectangular cross-section is fixed to the base 1 and is inclined with respect to the vertical. Thus, it has two opposed surfaces disposed in vertical planes and two opposed surfaces disposed in inclined planes.

Inside the inclined support column 2 is a support in the form of a ram 3 for a patient-supporting platform or table top 4. The ram 3 is raised or lowered by hydraulic means (not shown) under the control of a pedal 11. Neither the hydraulic means or the construction of the table top forms any part of the present invention.

The top of the ram 3 carries a yoke 5 which itself carries the patient-supporting table top 4.

The support column 2 and the ram 3 are both tubes of rectangular cross-section. Each of the two walls of the support column disposed in vertical planes is provided with a set of four low-friction bearing pads 6 which extend into the interior of the column and bear on the ram 3. On each of the other two walls is a pair of pressure pads 7 and a pair of pressure bearing rollers 8. The rollers 8 at the forward or lower wall 9 are arranged above the pressure pads and the rollers at rearward or upper wall 10 are arranged at the bottom as shown in FIGS. 1 and 2. The bearing pads and rollers are adjustable so that the pressure applied by them to the ram can be varied. This adjustment also permits compensation for wear to be made. As is readily apparent from FIG. 2 of the drawing, the load of the movable support column 3 is taken by the rollers 8 and pads 7 of the lower inclined wall 9. The particular arrangement of the roller on the upper part of the lower wall and on the lower part of the upper wall, as shown, serves to prevent any rocking movement between the movable support column 3 and the base support column 2.

As the ram rises or falls it runs on the pressure pads and rollers.

The invention makes use of the stresses produced by the inclined support-column to assist in maintaining the movable member in any desired position with respect to the fixed inclined column. Owing to the inclination the movable member is permanently loaded in one direction. During use, the rollers and/or bearing pads can be tightened against the movable member to compensate for wear.

It will be appreciated, that the movable member could support the seat of an operation chair instead of a table top.

I claim:

I. A device for supporting a patient during surgical procedures comprising a base member, an upwardly extending support column fixed'to the base and inclined with respect to the vertical, a movable support column reciprocably slidable within and with respect to the inclined support column, a patient-supporting platform mounted atop the movable support means for raising and lowering the movable support and the patient-supporting platform thereon along a plane inclined from the vertical, the support column having two opposite walls in parallel vertical planes and two opposite walls in parallel inclined planes, the movable support reciprocably sliding within the support column, low friction bearings between the fixed support column and the movable support column including a pressurebearing pad and a pressure-bearing roller mounted on each of the opposing inclined walls of the support colunn, the lower of the inclined walls having the load supporting bearing roller disposed above and spaced from the bearing pad and the upper of the inclined walls having the load supporting bearing roller disposed below the bearing pad, thereby to reduce rocking movement of the movable support about the aforesaid load supporting upper bearing roller on the lower wall with respect to the support column on repeated reciprocation of the movable column with respect to the support column.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US2832656 *Oct 1, 1957Apr 29, 1958Perry Cecil FMedical examining table
US2871085 *May 17, 1954Jan 27, 1959Diack Arthur GDrawer slide
US3171698 *Aug 29, 1962Mar 2, 1965Hancock Ind IncSeat slide mechanism
US3328093 *Nov 5, 1964Jun 27, 1967Automatic Motor Base CoMachinery supports with slidable carriage
US3389625 *May 23, 1966Jun 25, 1968Schiess AgDevice for straightening a rectilinearly displaceable tool reciprocating member of machine tools
US3719403 *Nov 17, 1970Mar 6, 1973Kidde & Co WalterCrane boom having wear pads
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US4567894 *Nov 9, 1984Feb 4, 1986General Electric CompanyHydraulically operated, mobile patient transport table useful with a magnetic resonance scanner
US5133741 *Aug 17, 1989Jul 28, 1992Filho Pedro LTherapeutic table for the treatment of spinal ailments
US6886200Jan 25, 2002May 3, 2005Hill-Rom Services, Inc.Hydraulic actuator apparatus for a surgical table
Classifications
U.S. Classification5/611, 254/93.00R
International ClassificationA61G13/06, A61G9/00, A61G13/00
Cooperative ClassificationA61G13/06
European ClassificationA61G13/06
Legal Events
DateCodeEventDescription
Mar 20, 1987AS02Assignment of assignor's interest
Owner name: MATBURN (HOLDINGS) LIMITED
Owner name: SMITHS INDUSTRIES PUBLIC LIMITED COMPANY, 765 FINC
Effective date: 19861027
Mar 20, 1987ASAssignment
Owner name: SMITHS INDUSTRIES PUBLIC LIMITED COMPANY, 765 FINC
Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:MATBURN (HOLDINGS) LIMITED;REEL/FRAME:004689/0708
Effective date: 19861027