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Publication numberUS1650327 A
Publication typeGrant
Publication dateNov 22, 1927
Filing dateApr 25, 1923
Priority dateApr 25, 1923
Publication numberUS 1650327 A, US 1650327A, US-A-1650327, US1650327 A, US1650327A
InventorsIsiah Conrad
Original AssigneeIsiah Conrad
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Operating table
US 1650327 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

l. CONRAD OPERATING TABLE Filed April 25, 1923 Nov, 22; 1927 3 Sheets-$heet 1 Nov. 22, 1927. 1,650,327

|. CONRAD OPERATING TABLE Filed Aprilv 25, 1923 3 Sheets-Sheet 2 Nov. 22, 1927.


gum/M01 Filed April 25, 1923 Patented Nov. 22, 1927.



Application filed Apri1'25 192s. swarm. 634,622.

This invention relatesto improvements in hospital and surgical appliances and equipment, and has particular reference to an 'im-' proved operating table, possessing features 5 of construction and design, to be hereinafter specifically pointed out, by means of which the table may be flexed andadjusted and conveniently adapted to the requirements of a surgeon in procuring the most' -advantageous and ef icient positions for assisting the surgeon in carrying out his worlc v In accordance with the invention, there is provided an operating table consisting prim'arily of a basehaving mounted thereon in a peculiarly adjustable manner, a table structure proper, which is supportedby means of a compound ornt, including both vertlcal and horizontal pivots by 1ncans of which the table structure may be adjusted to assume the various Trendelenbu-rg positions and vanous'lat'eral tilted modifications thereof.

Among the objects ofthe invention are:

The provision of an operating table where'- in substantially all of the controls for effecting the adjustments thereof are positioned adjacent to the head end of the table to "re- .volve inunison and asa unit with the table structure whereby the controls are located at all times within convenient reach of the anaesthetist, in order that there are'no' controls in "the surgeons way,',which would tend to'breal: the continuity ofthe operation even though a change of position might be necessary; in constructing the tablestructure proper to include flexibly connected body and leg sections and in the provision of controls thereforby meansof which the leg section can be raised to the same angle as the body section, or assume other relatively angular positions, by a control located at the head "end ofthe tabe; in constructing the table structure to embody a vertically adjustablelridney li'ftingdevice whichis adapted to beirais'ed and lowered 'a" control situated contiguous to the head end of the table; in the provision of a control, situated at the head end of the table'for lockingthe table in various positions of adjustment which the same assumes when rotated about the vertical pivotal axis thereof; inthc provision of anovel and improved foot control for'laterally tilting the table structure and locking the same in any of its laterally tilted positions; in various other improvements whichwill be in parto'bvious and in cally pointed outhereinafter.

part 'sp'eciti For a further understanding of the invention reference is to be had to the accompany ing -drawing, forming a part of'this specification and wherein similar-characters of referencedencte like andicorresponding parts throughout the several views thereof.

In said drawings: 7 7 Figure 1 is a. side elevation of the .im-. proved operating table comprising the present invention.

Figure 2 is a vertical longitudinal sectional view taken through the table; T 4- Figure 3 is a transverse vertical sectional view taken substantially on. the line 3-3 of Figure 1. p i v Figure 4: is a top plan view of the frame of the table structure and associated controls.

Figure 5 is a detail section on the line-5+5- ofFig'ure l. I Figure 6 is a similar view on the-line 66' of Figure 4. 1

- Figure 7 is a detail section .on the line 7+7 of Figure 4C. i Fig. 8 is a detail sectional vie'won line 88 of Fig. 6.

Referring more particularly totlie details I of the invention, the numeral 1' designates the operating table comprising the present invention in its entirety; This table is composed broadly ofa base12yof substantial metallic construction andformed to provide a substantial foundation forthe table-to preclude undue shifting or tilting-movementsthereof when actively employed. Mounted upon the "base and substantially carried thereby is .auniversal or compound mount- 1 ing 3 which serves as an adjustable support thereof terminated'i n a plurality of'radiat- -ing feet 6, which carry at their outer ends, if

al laterallyor in a vertical desiredyr'ollers 7 'by meansofwhich the table asa whole is renderednmobile. :'-Th c radiatingfeet are constructed so as to enable the base to extend over a comparatively wide area and thus affords stability to the greatest possible extent without interference with the movements of the surgeon. Disposed within the hollow body portion 5 of the base is an oil or hydraulic pump 8 of any suitable construction, the said pump in this instance including a cylinder 9 and valved by-passes 10, the cylinder 9 containing a vertically reciprocating piston 11, which is adapted to be raised and lowered, in the usual manner, by the admissionv or e]ection of: liquid to and from the cylinder 9. Foot pedals 12 proi ject from the base 2 for controlling the operation of the pump 8.

Attached to the upper end of the piston 11, or to that part which projects above the body portions? of 'the base 2 is the yoke shaped casting 18 of the universal mounting 3. This casting is formed to include upwardly and outwardlyflaring arms 14. which have their ends formed with registering horizontal bores for the reception of a transversely extending substantially horizontal rod 15 which latter constitutes the horizontal axis for affording lateral tilting on the part of the table structure 4.

Supported for rotation upon the rod 15 is a Vertically swinging section 16 of the mounting 3.- This section includes a flat circular top 17, which terminates in an upwardly projecting boss 18, which constitutes the vertical axis about which the table structure i is adaptedto revolve. The boss 18 is disposed to be received within a socket 19 formed in the casting 20 rigidly carried by reverse Trendelenburg positions.

' teeth22, arranged to-mesh with a worm 23,

journaled for rot-ationwithin the upper. part of the casting 13 upon a shaft 2 1-. The outer end of this shaft is equipped with a beveled gear 25, arranged to mesh with a similar gear 26, mounted upon a shaft 27 which is movable in unison in vertical directions with the .mounting 8. The-lower end of the shaft 27 isarranged to telescope within and rotate at all times with a tubular shaft section 28, carried by and located within-the'base 2, and the lower end of the section28 is equipped with a beveled gear 29, meshing with-a gear 30, having integrally formed therewith a site ends equipped with operating wheels 34;,

which wheels are formed with foot pedals 35,

enabling the shaft 33 to be turned by foot I manipulations. Obviously, by rotating the shaft 33, motion will be imparted to the worm 23, which rocks the section 16in a vertical plane, and thereby tilts the boss 18 from true vertical positions to various angular po- 7 sitions and enables the table structure proper to be tilted toward the surgeon so that he is directly over his wo-rkwithout having to lean far over the table in a ned position. By means of this construction, the table may be tilted laterally to either side at any angle and automatically and securely locked in any position. The telescopic shaft construction and 28 is provided to take care of the raising and lowering of the table effected through the medium of the pump 8.

T he table structure a is constructed to include the rectangular frame 21 which oonstitutes what may be termed the vbody 'section of the table 4. This frame is preferably of solid integral construction and is f0 uned contiguous to the intermediate portion thereof with space-d transversely extending bars 36. between which the casting 20 is 'po sitioned and secured. In this instance, one

of the longitudinally extending side bars of I the frame 21 is provided with a bracket which supports a longitudinally extending shaft 38, having" one end thereof equipped with an ope ating crank'39, arranged to osloo ciilate through a slot 10 provided in the:

bracket 37. i lie inner end of theshaft 38 is formed witl a cam 41, which is arranged to engage .with the under portion of an operating lever 12 pivotally. mounted and carried as at 13 upon the upper surface of the casting 520, and which lever is disposed between the transverse bars 36. Carriedby. the lever-a2 is a pivoted depending pin 4: which is arranged to engage with pairs of registering openings, d5 provided in the casting 20 and in the top 17 of the vertical section 16 of the mounting? a spring'eo serving normally to maintain the pin in registration or engagement with the openings hiani-q fcstly, by operating the crank 39, the'cam 41 maybe operatedto raise the lever 41-2,

thereby withdrawing the .pin 14 from i'. locking position in connection with the openings 45. lVhen this has been effected, it will beapparent that the table structure 1 may be rotated about the boss 18, and that when the tablehas'been rotated to the desired position,.the crank 39 is released, and the spring l6 will then automatically project the pm 1 1 into'the new registering set of openings' l o, retaining the table iuits fixed position of ad ustrnent.

Q nection with the frame 21.

The frame 21 may be suitably covered by a sheet metal top 47 upon which a patient may be placed, and the top is formed intermediate of its length with a slot 48, in which is positioned a transversely extending bar 49, constituting a kidney lifting device. The bar 49 is formed with depending posts 50, which are arranged to be received for sliding movement within eyes or sockets 51 provided in connection with one of the bars 36. To raise and lower the bar 49 from the head end of the table, there is journaled' in the frame a transversely extending rock shaft 52, which carries a plurality of curved crank arms 53 carrying at their outer ends rollers 54, which are disposed for engagement with the under side of the bar 49' so that upon-the rotation of the shaft 52, the said bar may be raised or lowered.

To rotate the shaft 52 and retain the same in various positions of rotation, I provide one end of the same with a worm gear 55, which meshes with a worm 56 mounted upon a short shaft section 57, journaled in con- The section 5'4 has its outer end equipped with a universal joint 58, to which is flexibly connected thereby an angularly extending operating shaft 59, which extends toward one of the corners of the frame 21, and has its outer end equipped with a hand wheel 60. The rotation of the Wheel 60, which is at the head end of the table, results in the rotation of the rock shaft 52, and the consequent raising or lowering of the kidney lift 49. The worm gearing employed will of course lock the rock shaft in any of its rotated positions.

To the lower end of the frame 21, there is pivotally attached the leg section 61 of the table 4. The section 61 includes a rectangular frame 62 suitably covered by a sheet metal top 63, and a pivot rod 64 extends transversely of the table 4 and pivotally unites the frame 21 with the frame 62. To permit of the swinging of the section 61 independently of the body section of the table, I provide a rock shaft 65 situated at the lower end of the frame 21 and formed with a pair of crank arms 66, which terminate at their outer ends in upwardly turned extremities 67. Pivotally connected to these extremities is a pair of links 68', which in turn have their upper ends pivotally connected as at 69 to "the extreme outer end of the frame 62. Manifestly, by rotating the rock shaft 65, the leg section may be raised or lowered independently of the body section of the table. f

The rock shaft 65 is operated by means of a worm gear 70 suitably fixed to one end thereof and disposed to mesh with a worm gear 71 carried upon a longitudinally extending shaft 72 journaled in connection with the frame 21. The other end of the shaft 72, opposite the gear 71, is connected freedom of movement.

with a universal joint 73, by means of said joint. to an angularly extending operating shaft 74,. which is terminated contiguous to one corner of the frame 21 opposite to the operating shaft 59, the outer end of the shaft 74 being equipped with a hand wheel 7 5 to permitrof its convenient rotation. It will benoted in. connection with this construction that the operating shafts 59 and 74 terminate contiguous to the head corners of the frame 21 and are thus out of the way of the anaesthetist but are within convenient reach and are at all times carried by the revolving or tiltingtable structure. It will be'noted particularly that the controls are out of the way of the surgeon and will not interferein any way with his movements or with the progressof an operation, even when an adjustment in the position of the table structure is desired or effected. To the best of my knowledge, it is novel in the art to provide controls of this character carried by the swinging table structure and at one end thereof.

The frame 21 at the head end of the table pivotally carries a head section 76, which is adapted to turn about a rod 77 carried in connection with lugs 78 projecting from the frame 21. The table section may be raised or lowered as desired independently of the body section of the table and suitably locked in any of its adjusted positions. When not in use, the table section may be folded under the top 47 of the frame 21. Longitudinally extending side bars 78 are formed with the frames 21 and 62 and carry longitudinally adjustable body clamps 79, the bars 78 on the frame 21 also carry an adjustable anaesthesiascreen SO. If desired floor clamps 81 may be carried by the base 2 for the purpose of securing the table in any fixed position in connection with the floor.

By means of'the construction described,- it will be seen that the present invention provides an operating table by means of which the table structure proper may be quickly, positively and conveniently adjust.- ed to assume a variety of positions best adapted for the needs of the surgeon. By

means of the lateral tilting feature thereof,

the table is inclined so that the patient thereon is turned toward the surgeon so that the latter may operate when standing in an upright comfortable position without physical strain and without touching any part of the table. 'Moreover, all of the controls on the table are either attached to the head end of the table or located in the base within con; venient reach of the anaesthetist; there are 'no controls in thesurgeons way which will tend in any manner to interfere with his By the peculiar mounting, the table may be tilted toward the surgeon from a true horizontal position, and from theyarious Trendelenburg positions so that the surgeon is directly over his work, without having to lean far over the table in a cramped or strained manner. The various adjustments are efi'ected through the medium of worm gearing, which has the advantage of being both positive and convenient to operate and furthermore serves to automatically retain any set position of the unit or part governed thereby.

What is claimed is:

1. In an operating table, a base structure including a substantially vertically disposed stud, a top having a recess formed in the under side thereof for the reception of said stuth and about the axis of which stud said top is adapted to revolve locking means including a spring pressed pm arranged to engage with registering openings formed in connection with said top and stud to preclude rotation on the part of said top, and operating mechanism carried in connection with said top for controlling the registration of said pin with said openings.

2. In an operating table, a frame includ ing a body section and a leg section, a hinge connection between said sections, a rock shaft carried by said body section, arms projecting from said rock shaft and cooperative with said leg section for raising and lower ing the latter, worm gearing for operating said rock shaft; and operating; means extending from the head end of said body section to said worm gearing.

In test mony whereof I name to this speclfication.


have signed my I

Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US2700583 *Jun 18, 1949Jan 25, 1955Air ReductionOperating table with selective control mechanism
US2735738 *Nov 25, 1953Feb 21, 1956 Berne
US2832313 *Dec 12, 1956Apr 29, 1958Wolfgang ToepelApparatus to hold animals for surgery and the like
US3227439 *May 10, 1962Jan 4, 1966Simmons CoOperating table having separable top
US6038718 *Aug 15, 1994Mar 21, 2000Midmark CorporationSurgical table
US7083355Sep 29, 2003Aug 1, 2006The Brewer Company, LlcStirrup support indexer for a medical examination table
US7093313Sep 29, 2003Aug 22, 2006The Brewer Company, LlcHeadrest linkage
US7350249Sep 29, 2004Apr 1, 2008The Brewer Company, LlcLeg rest and kneeler assembly for a medical examination table
US7513000Jul 28, 2006Apr 7, 2009The Brewer Company, LlcMedical examination table
US7845033Feb 23, 2009Dec 7, 2010The Brewer Company, LlcMedical examination table
US8096006Nov 8, 2010Jan 17, 2012The Brewer Company, LlcMedical examination table
US8479329Dec 20, 2011Jul 9, 2013The Brewer Company, LlcMedical examination table
US9038216Apr 4, 2012May 26, 2015The Brewer Company, LlcMedical examination table
USD496462Sep 29, 2003Sep 21, 2004The Brewer Company, LlcMedical examination table
U.S. Classification5/618, 5/600
International ClassificationA61G13/00, A61G13/02
Cooperative ClassificationA61G13/02
European ClassificationA61G13/02