CA1128676A - Adjustable x-ray table - Google Patents
Adjustable x-ray tableInfo
- Publication number
- CA1128676A CA1128676A CA329,057A CA329057A CA1128676A CA 1128676 A CA1128676 A CA 1128676A CA 329057 A CA329057 A CA 329057A CA 1128676 A CA1128676 A CA 1128676A
- Authority
- CA
- Canada
- Prior art keywords
- base
- frame
- top surface
- support means
- raising
- 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.)
- Expired
Links
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
- A61G13/06—Adjustable operating tables; Controls therefor raising or lowering of the whole table surface
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/04—Positioning of patients; Tiltable beds or the like
- A61B6/0487—Motor-assisted positioning
-
- 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
- A61G2210/00—Devices for specific treatment or diagnosis
- A61G2210/50—Devices for specific treatment or diagnosis for radiography
Abstract
ADJUSTABLE X-RAY TABLE
Abstract of the Disclosure An X-ray table which may be raised from a first normal or rest position to an elevated position, and which may also be lowered to a position below said first position, thus permitting patients to move from a sitting position, as from a chair, directly onto the table without the need to climb or be lifted onto the table.
Abstract of the Disclosure An X-ray table which may be raised from a first normal or rest position to an elevated position, and which may also be lowered to a position below said first position, thus permitting patients to move from a sitting position, as from a chair, directly onto the table without the need to climb or be lifted onto the table.
Description
BackgTound of the Invention The use of X-ray transparent flattop tables foT supporting patientS in a desired position with respect to a source of x-radia-tion or the like is well known. Such adjustable tables are com-monly used when patients are to be subjected, for example, to routine radiographic procedures. Tables with adjustable tops have been used for expanded procedures such as require insertion in the patient's body of a contrast media to be visually monitoTed by fluoroscopic procedures.
One type of table for radiographic use comprised a frame supported by corner legs and having an X-ray transparent panel of wood, plastic or composition upon which a patient was made to lie. A Bucky tray was disposed beneath the panel for supporting X-ray sensitive film, and an X-~ay generator was positioned above the table to project x-radiation downwardly through the patient's body and the tTansparent panel to the X-ray sensitive film.
The X-ray tube was usually suspended or supported in a manner that would allow projection o~ the radiation over an area comprising as much as about 70 x 15 inches. In such an installa-~0 t~on it was required that the patient "climb" or be lifted ontothe table and, with the heIp of a technologist, lie down approxi-mately in the center of the table. To locate the selected area of the patient to be studied over the center of the film in the Bucky tray, lt was then necessary to push, pull or otherwise physically slide the patient over the table top.
A large poTtion of such examinations often required two or m¢re technologists to handle the patient. The use of foot stools, sheets and other equipment did not solve the problem of the need for additional technologists to assis~ the patients in all but the simplest examinations.
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The next development was that of providing a table in which the top was longi~udinally and transversely movable to partially Teduce the need to slide the patient. Another improYemént was achieved by developing a table, particularly for angiographic pro-ceduTes, which comprised a top which moved ~our ways in a single plane on a pedestal instead of fouT legs. This table also eleva-ted the top to make minor surgical procedures easier. Also, this table resembled an operating table more than an X-Tay table, and did not have radiographic capabilities. Further, this table had a normal lower or rest position of about thirty inches from which it could be elevated. Thus, the requirement for additional tech-nologists to assist a patient still existed.
A still later development provided a flat-top pedestal table ~ which completely eliminated the need to manually apply any force on the patient once he is on the table. This table had a top which had trav01 of twelve by forty-seven inches which allowed easy positioning of the selected portion of the patient's body over the center o the image Teceptor o~ film in the Bucky tray for all routine radiographic techniques. This table has virtually `~ 20 el`iminated the need foT an assistant technician to move the patlent once the patient is on the table.
However, even this table had a normal lower or rest position of about thirty or thirty-two inches above the floor~ and it was `~ still necessary or a patient to climb onto the table top or to be assisted thereon.
It has been found that a majority o in house patients in a hospital or convalescen~ home, and residents of a retirement home, need assistance to get onto a conventional float top or stationary ~ radiographic X-ray table. In a busy area an assistant is auto-; 30 matically assigned to help the technician in order to reduce :`"
. -2-overall examination time. In a room having the capabilities of the most modern known pliOr art X-ray table the time spent in gettin~
a patient on and off the table has been found to be the majo~
portion of the time for most examinations.
, . .
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.
-. ~ . . . .. , , , ~ . , J~ t~j Summar of the Invention Y _ _ The present invention oveTcomes the above and othe~ disad-vantages of the prior art by the provision of an adjustable power-driven X-~ay table, particularly for ~adiographic procedures, which may be loweTed below the conventional rest position of about thirty inches above the floor so as to pérmit easier disposition of a patient upon the table top without climbing or lifting such as was previously ~equired. In accordance with the present inven-tion the table top may be lowered to a level of about nineteen inches from the flooT. This has the advantage of permitting a patient to sit down on the table top o~ to slide easily trans-versely from a chaiT onto the table top instead of climbing up or being lifted onto it.
It has been found that an ambulatory patient, even one on crutches, needs no help getting onto the table embodying the present invention. A wheel chair patient can merely flip down the arm rest of his chair and slide smoothly sideways from the chaiT to the *able top, often with no assistance whatsoeveT.
Such convenience encouTages patients to "do it yourself", an aid to rehabilitation. Since the number of assistants may be reduced substantially, there is a consequent reduction in the cost as well as the exam time in most instances.
. The table embodying the present invention is a pedestal type ~` which may have a floating or stationary top and is completely adjustable from an upper level to a normal rest level of abou~
`:
thirty-two inches and additionally to a lower level o about nine-teen inches.
~`~ In order to allow the tabls top to be lowered as desired, the mechanism to achieve the vertical adjustment is one which ` ~ 30 collapses, such as a scissors driven by a compact hyd~aulic .
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.
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system. Thus, in the lowered position of the table top the parts of the struc-ture are compactly packaged without interfering with operation of the apparatus.
; Lifting power is provided conveniently by a suitable hydraulic sys-tem attached to the central pivot area of the scissors, thus enabling effi-cient operation without interference.
In accordance with the present invention, there is provided X-ray apparatus comprising a radiographic table having a base with a table-support-ing bottom surface and upstanding side panels of a predetermined height less ~
than nineteen inches as measured from said bottom surface, a frame having an ;
elongated patient-supporting top surface spaced above said base and having de-pending side panels disposed in slidable telescopic relationship with corres-ponding side panels of the base, said frame side panels depending a distance less than nineteen inches as measured from said top surface, and adjustable ~-support means for translationally raising and lowering said frame and said top `~
surface relative to said base and said bottom surface, said support means being enclosed by said base and ~rame side panels and movable longitudinally with respect to said top surface when the frame and said top surface are low-ered for storing the support means in a space having a vertical dimension be-tween said top and bottom surfaces of less than nineteen inches and permitting ~0 the top surface to be located at substantially wheel chair height.
In accordance with the present invention, there is further provided ~ X-ray apparatus comprising a table with a top adapted to be lowered to a level `~ at least approximately wheel chair height, said table having a base, a frame spaced above said base, means on said frame for supporting said top thereon ;~ and adjustable support means for raising and lowering said frame and top, said ~;
; support means being located on said base between the base and frame and having the frame mounted thereon, said support means being collapsible, when the :"~ frame and top are lowered, into a space having a restricted vertical dimension ~; .
```~ permitting the top to be located at substantially wheel chaîr height.
~ 30 In acc~rdance with the present invention, there iOE further provided '~` X-ray apparatus comprising a tahle including a base ha~ing a table-supporting . ~ , i ~ :, `` C - :
, ~2~
bottom surface, a frame having a patient-supporting top surface spaced above said base and supported on the base for translational vertical movement rela-tive to said bottom surface, and adjustable support means disposed between said top and bottom surfaces and connected to the frame Eor translationally raising and lowering said frame and said top surface relative to said base and said bottom surface, said support means comprising a jack structure which includes a first pair of longitudinally extending crossed arms having respec-tive end portions pivotally secured to said base and said frame adjacent one end of the table, a second similarly positioned and attached pair of longitu-dinally extending crossed arms adjacent the opposite side of the table, said crossed arms of each pair being pivotally connected together at axially align-ed crossover points, and drive means pivotally connected to said crossover points for raising and lowering said frame and said top surface relative to said bottom surface, said drive means comprising at least one hydraulic cylin-der mounted at one end on said base and having a plunger rod attached to said crossover points, and means for operating said cylinder to cause said rod to move said crossover points selectively upwardly or downwardly in accordance with said translationally raising and lowering of said frame and said top surface.
In accordance with the present invention, there is further provided X-ray apparatus comprising a table with a top adapted to be lowered to a level ;~
~i at least approximately wheel chair height, said table having a base, an elong-- ated patient-supporting top surface spaced above the base, and adjustable sup-port means disposed between the top surface and the base and connected to the ~.
~` top surface for raising and lowering the top surface relative to the base, ~` ~
said adjustable support means being ex~endable longitudinally along the elong- :;
`~' ated dimension of said top surface when the top surface is lowered to a posi- -.;
tion where the top surface is located substantially at wheel chair height, the amount of longitudinal extension of the support means along the elongated dim- . .
ension of the top surface heing changed when the top surface is above wheel chair height.
.
- 5a -,;' ~`i ~ J
Brief Descripti:on of the Drawings The abore and other objects and advantages of this invention will become apparent from the following description taken in con-nection with the accompanying d~awings, wherein:
FIG~ 1 is an isometTic view of an X-ray apparatus including a tablc embodying the invention and showing the table in an inter-mediate rest position;
FIGo 2 is an isometric view showing the table of- Fig~ 1 in elevated position;
FIG~ 3 is an isometric view showing the table of Fig. 1 in loweTed position according to~this invention;
FIG~ 4 is an isometric view of the adjustable scissor supporting mechanism for the table top;
FIG. 5 is a fTont elevational view of the table supporting mechanism showing the table in elevated position;
PIG~ 6 is a front elevational view of the table supporting mechanism showing the table i~n lowered position;
FIG~ 7 is a ve~tical se~ct~ional view of the elevating mech-anism taken along line 7-7 of Fig. S; and FIG~ 8 is a schematic diagram of the electrical control ~:
system for the apparatus. :
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Description of the Preferred Embodiments ReferIing more pa~ticularly to the drawings, wherein like characters of reference designate like parts thToughout the se~-eral views, there is shown in Fig. 1 an X-ray apparatus 10 which comprises an X-ray table 12 having a base or pedestal 14 and a top 16. The top 16 is suitably secured upon a frame or carriage 18 for planar movement in any direction, the means for accomplish-ing such movemen~ not comprising a part of this invention. The carriage 18 has a depending fTont panel 20 and end panels 22 , 10 which overlie corresponding front and end panels 24 and 26 respec-- tively of the base 14.
Although not a part of the present invention, the apparatus lO is shown briefly as also including a tube stand 28 that sup-ports a veTtically adjustable X-ray generator 30 which is normally positioned above the table top 16. Details of the generator and associated mechanism aTe well known and, therqfore, not described herein.
Beneath the table top 16 is located a removable Bucky tTay 32 which includes a film caTrieT or cassette (not shown) which is ada~ted to receive x-radiation from the generator 30. The details of the film-supporting mechanism are also well known and, there-fore, not described herein.
.~
` The table *op 16 in the position shown in Fig. 1 corresponds ,~
to ~he rest or lowered position of conventional X-ray tables, which is about thirty-two inches above the floor, and may be raised by means to be descrlbed ~o the elevated position shown in Fig. 2, ~ which is about fifty-four inches above the floorO
`~ It has been found that when a conventional table top is dropped to the rest or lowered position shown in Fig. 1, it is ex-~, tremely difficult for an incapacitated patient to be assisted onto ~ .
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the ~hirty-two inch high table top. Therefore, in accordance with this invention, the table top 16 may be lowered to a position as shown in Fig. 3 which is about nineteen inches from the 100r.
Thls dimension is approximately at chair height, thus making it considerably easier for a wheel~chair patient, ~or example, to slide directly from the chair onto the table top without assis-tance. After a patient is positioned on the table, the top may be elevated to any level up to about thirty-two or fifty-four inches, as may be convenient.
In further accordance with this invention, the means for raising and lowering the table top 16 comprises a hydraulically operated scissors mechanism as shown in Figs. 4-7. In Fig. 4 the table top 16 is shown in phantom and the Bucky tray is omitted for convenience.
The table top 16 is adjustably positioned on the carriage 18 for lateral movement, as mentioned before. However, a frame comprising a pair of longitudinal channel members 34 and 36 are disposed at the front and rea~ of the table and interconnect end panels 22 immediately below the carriage rails 38. On the under-; 20 side of each channel 36 at one end of che table is located an `` anchoT block 40 to each of which is pivotally attached the upper end of a scissors bar 42.
On a sheet metal platform 44 in the base 14 there are pro-.
vided, at the opposite end of the table structure, a pair of spaced bearing channels 46 within which are secured the lower ends of the respective scissors bar 42. In actuality, the lower ends of bars 42 carry rollers 43 which move longitudinally within the channels to allow the scissors to function, as will be described hereinafter.
. .
A pair of spaced anchor blocks 48 are also mounted on the `-platform 44 in vertical spaced rela*ion to the upper anchor blocks 40. Anchor blocks 48 serve to pivotally secure the lower ends of respective second scissors bars or arms 50. The bars 50 are adjustably supported by rOlleTS 50 ~Fig. 7) within respective channels 52 which are sultably mounted on the under sides of the channel members 36 in spaced vertical alignment with channels 46.
The bars 42-50 in each pair thus cross one anotheT and are pivot-ally connected together at their crossover points by pivots 54.
~rom this it will be seen that the scissors can be used as a jack to raise and lower the table top 16, and that with such a scissors arrangement the table top can be lowered to a much lower ~evel than can be achieved with vertical screws, rack and pinions or ` other mechanisms.
The means which is employed in the present invention for vertically adjusting the table top 16 comprises a hydraulic system ` such as the HydTaulic Power Pack No. 2022405 supplied by Dura Corp.
~` of Paris, Kentucky. Such a hydraulic system includes a pump and an electric motor for operating the pump to control flow of hydraulic fluid into and out of a hydraulic cylinder. The pump-motor unit is indicated at 56 and one unit is provided for each pair of scissors bars 42 and 50. Each unit is preferably mounted `~` on a rigidizing support plate 58 spanning respective opposed arms`~ and is operati~ely connected to a respective hydraulic cylinder ` 60.
`; Each cylinder 60 is pivotally attached at its lower end to ~` a respective bar 62 carried by the platform 44. The cylinders ` each contain the usual plunger having a plunger rod 64 extending out from the upper end thereof, and the outer ends of the plunger ~` rods 64 are pivo~ally connected to respective spaced lugs or ears66 on a yoke plate 68 as shown best in Pig. 7. The yoke plate ' ~
.
J~7 is provided with angled lugs or ears 70 in which the inner ends of the pivot pins 54 of the crossed scissor arms 42 and 50 are - secuTed.
Thus, it is to be understood that when the hydraulic cylin-deTs 60 are actuated to Taise the table top 16, the plunger rods 64 will pTojeCt upwardly out of the upper ends of the cylinders and, because of the pivotal connections with lugs 66, will move the plate 68 in an upwaTd direction. Since the pivot members 54 are also connected to the plate 68 by the lugs 70, this will cause the pivot members 54 and the scissor arms 42 and 50 to be raised. The arms are pi~oted at one end to bloc~s 40 and 48, as described. However, the opposite ends of the arms will roll on their rollers 43 and 51 within the respective channel blocks 52 and 46, thus allowing the scissor jack mechanism to raise the table top 16 to the desired level.
The hydraulic cylinders 60 can be similarly operated in the reverse direction to lower the scissor jack mechanism and consequently lower the table top. It will be understood that the scissor jack mechanism described will collapse into a ~ela-tivel~ small vertically dimensioned space, thus allowing the table top to be lowered to a level as low as about nineteen inches , .
from the floor.
The electrical control circuit for the described apparatus is relatively simple,as shown in Fig. 8. Two double-pole single-throw switches 72 and 74 are provlded and these are manually opeTated as by foot pedals 76 and 78 at the bottom front of the table. When switch 72 or 74 is closed, the motor 80 of the hydrau-lic system is driven in one directlon to cause the pump 82 to force fluid into a cylinder 60 to raise the table top 16. The circuit is completed through the solenoid valve 84 of the hydraulic .
.
cylinder. Although only one hydraulic system is disclosed in Pig. 8, it will be apparent that two systems could be operated by the same circuit.
Prom the foregoing it will be apparent that all of the objec-tives of this invention have been achie~ed by the appalatus shown and desc~ibed. HoweverJ it will be understood that various changes and modifications in the desc~ibed apparatus may be made by those skilled in ~he art. For example, it will be apparent that a sin-gle scissoT jack arrangement may be employed foT elevating and lowering the table top instead of the double jack structure dis-closed. Therefore, all matter shown and described is to be inter-preted as illustTative and not in a limiting sense.
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One type of table for radiographic use comprised a frame supported by corner legs and having an X-ray transparent panel of wood, plastic or composition upon which a patient was made to lie. A Bucky tray was disposed beneath the panel for supporting X-ray sensitive film, and an X-~ay generator was positioned above the table to project x-radiation downwardly through the patient's body and the tTansparent panel to the X-ray sensitive film.
The X-ray tube was usually suspended or supported in a manner that would allow projection o~ the radiation over an area comprising as much as about 70 x 15 inches. In such an installa-~0 t~on it was required that the patient "climb" or be lifted ontothe table and, with the heIp of a technologist, lie down approxi-mately in the center of the table. To locate the selected area of the patient to be studied over the center of the film in the Bucky tray, lt was then necessary to push, pull or otherwise physically slide the patient over the table top.
A large poTtion of such examinations often required two or m¢re technologists to handle the patient. The use of foot stools, sheets and other equipment did not solve the problem of the need for additional technologists to assis~ the patients in all but the simplest examinations.
` .
- ' ~
:
The next development was that of providing a table in which the top was longi~udinally and transversely movable to partially Teduce the need to slide the patient. Another improYemént was achieved by developing a table, particularly for angiographic pro-ceduTes, which comprised a top which moved ~our ways in a single plane on a pedestal instead of fouT legs. This table also eleva-ted the top to make minor surgical procedures easier. Also, this table resembled an operating table more than an X-Tay table, and did not have radiographic capabilities. Further, this table had a normal lower or rest position of about thirty inches from which it could be elevated. Thus, the requirement for additional tech-nologists to assist a patient still existed.
A still later development provided a flat-top pedestal table ~ which completely eliminated the need to manually apply any force on the patient once he is on the table. This table had a top which had trav01 of twelve by forty-seven inches which allowed easy positioning of the selected portion of the patient's body over the center o the image Teceptor o~ film in the Bucky tray for all routine radiographic techniques. This table has virtually `~ 20 el`iminated the need foT an assistant technician to move the patlent once the patient is on the table.
However, even this table had a normal lower or rest position of about thirty or thirty-two inches above the floor~ and it was `~ still necessary or a patient to climb onto the table top or to be assisted thereon.
It has been found that a majority o in house patients in a hospital or convalescen~ home, and residents of a retirement home, need assistance to get onto a conventional float top or stationary ~ radiographic X-ray table. In a busy area an assistant is auto-; 30 matically assigned to help the technician in order to reduce :`"
. -2-overall examination time. In a room having the capabilities of the most modern known pliOr art X-ray table the time spent in gettin~
a patient on and off the table has been found to be the majo~
portion of the time for most examinations.
, . .
,"'' .
~ -3-,` .
j . .
.
-. ~ . . . .. , , , ~ . , J~ t~j Summar of the Invention Y _ _ The present invention oveTcomes the above and othe~ disad-vantages of the prior art by the provision of an adjustable power-driven X-~ay table, particularly for ~adiographic procedures, which may be loweTed below the conventional rest position of about thirty inches above the floor so as to pérmit easier disposition of a patient upon the table top without climbing or lifting such as was previously ~equired. In accordance with the present inven-tion the table top may be lowered to a level of about nineteen inches from the flooT. This has the advantage of permitting a patient to sit down on the table top o~ to slide easily trans-versely from a chaiT onto the table top instead of climbing up or being lifted onto it.
It has been found that an ambulatory patient, even one on crutches, needs no help getting onto the table embodying the present invention. A wheel chair patient can merely flip down the arm rest of his chair and slide smoothly sideways from the chaiT to the *able top, often with no assistance whatsoeveT.
Such convenience encouTages patients to "do it yourself", an aid to rehabilitation. Since the number of assistants may be reduced substantially, there is a consequent reduction in the cost as well as the exam time in most instances.
. The table embodying the present invention is a pedestal type ~` which may have a floating or stationary top and is completely adjustable from an upper level to a normal rest level of abou~
`:
thirty-two inches and additionally to a lower level o about nine-teen inches.
~`~ In order to allow the tabls top to be lowered as desired, the mechanism to achieve the vertical adjustment is one which ` ~ 30 collapses, such as a scissors driven by a compact hyd~aulic .
; .,;
.
,, d ~
system. Thus, in the lowered position of the table top the parts of the struc-ture are compactly packaged without interfering with operation of the apparatus.
; Lifting power is provided conveniently by a suitable hydraulic sys-tem attached to the central pivot area of the scissors, thus enabling effi-cient operation without interference.
In accordance with the present invention, there is provided X-ray apparatus comprising a radiographic table having a base with a table-support-ing bottom surface and upstanding side panels of a predetermined height less ~
than nineteen inches as measured from said bottom surface, a frame having an ;
elongated patient-supporting top surface spaced above said base and having de-pending side panels disposed in slidable telescopic relationship with corres-ponding side panels of the base, said frame side panels depending a distance less than nineteen inches as measured from said top surface, and adjustable ~-support means for translationally raising and lowering said frame and said top `~
surface relative to said base and said bottom surface, said support means being enclosed by said base and ~rame side panels and movable longitudinally with respect to said top surface when the frame and said top surface are low-ered for storing the support means in a space having a vertical dimension be-tween said top and bottom surfaces of less than nineteen inches and permitting ~0 the top surface to be located at substantially wheel chair height.
In accordance with the present invention, there is further provided ~ X-ray apparatus comprising a table with a top adapted to be lowered to a level `~ at least approximately wheel chair height, said table having a base, a frame spaced above said base, means on said frame for supporting said top thereon ;~ and adjustable support means for raising and lowering said frame and top, said ~;
; support means being located on said base between the base and frame and having the frame mounted thereon, said support means being collapsible, when the :"~ frame and top are lowered, into a space having a restricted vertical dimension ~; .
```~ permitting the top to be located at substantially wheel chaîr height.
~ 30 In acc~rdance with the present invention, there iOE further provided '~` X-ray apparatus comprising a tahle including a base ha~ing a table-supporting . ~ , i ~ :, `` C - :
, ~2~
bottom surface, a frame having a patient-supporting top surface spaced above said base and supported on the base for translational vertical movement rela-tive to said bottom surface, and adjustable support means disposed between said top and bottom surfaces and connected to the frame Eor translationally raising and lowering said frame and said top surface relative to said base and said bottom surface, said support means comprising a jack structure which includes a first pair of longitudinally extending crossed arms having respec-tive end portions pivotally secured to said base and said frame adjacent one end of the table, a second similarly positioned and attached pair of longitu-dinally extending crossed arms adjacent the opposite side of the table, said crossed arms of each pair being pivotally connected together at axially align-ed crossover points, and drive means pivotally connected to said crossover points for raising and lowering said frame and said top surface relative to said bottom surface, said drive means comprising at least one hydraulic cylin-der mounted at one end on said base and having a plunger rod attached to said crossover points, and means for operating said cylinder to cause said rod to move said crossover points selectively upwardly or downwardly in accordance with said translationally raising and lowering of said frame and said top surface.
In accordance with the present invention, there is further provided X-ray apparatus comprising a table with a top adapted to be lowered to a level ;~
~i at least approximately wheel chair height, said table having a base, an elong-- ated patient-supporting top surface spaced above the base, and adjustable sup-port means disposed between the top surface and the base and connected to the ~.
~` top surface for raising and lowering the top surface relative to the base, ~` ~
said adjustable support means being ex~endable longitudinally along the elong- :;
`~' ated dimension of said top surface when the top surface is lowered to a posi- -.;
tion where the top surface is located substantially at wheel chair height, the amount of longitudinal extension of the support means along the elongated dim- . .
ension of the top surface heing changed when the top surface is above wheel chair height.
.
- 5a -,;' ~`i ~ J
Brief Descripti:on of the Drawings The abore and other objects and advantages of this invention will become apparent from the following description taken in con-nection with the accompanying d~awings, wherein:
FIG~ 1 is an isometTic view of an X-ray apparatus including a tablc embodying the invention and showing the table in an inter-mediate rest position;
FIGo 2 is an isometric view showing the table of- Fig~ 1 in elevated position;
FIG~ 3 is an isometric view showing the table of Fig. 1 in loweTed position according to~this invention;
FIG~ 4 is an isometric view of the adjustable scissor supporting mechanism for the table top;
FIG. 5 is a fTont elevational view of the table supporting mechanism showing the table in elevated position;
PIG~ 6 is a front elevational view of the table supporting mechanism showing the table i~n lowered position;
FIG~ 7 is a ve~tical se~ct~ional view of the elevating mech-anism taken along line 7-7 of Fig. S; and FIG~ 8 is a schematic diagram of the electrical control ~:
system for the apparatus. :
`! :
;' ~ :
,`
.`'~ ` ' ``: :
`:
.. -6-. ~ .
:-~
Description of the Preferred Embodiments ReferIing more pa~ticularly to the drawings, wherein like characters of reference designate like parts thToughout the se~-eral views, there is shown in Fig. 1 an X-ray apparatus 10 which comprises an X-ray table 12 having a base or pedestal 14 and a top 16. The top 16 is suitably secured upon a frame or carriage 18 for planar movement in any direction, the means for accomplish-ing such movemen~ not comprising a part of this invention. The carriage 18 has a depending fTont panel 20 and end panels 22 , 10 which overlie corresponding front and end panels 24 and 26 respec-- tively of the base 14.
Although not a part of the present invention, the apparatus lO is shown briefly as also including a tube stand 28 that sup-ports a veTtically adjustable X-ray generator 30 which is normally positioned above the table top 16. Details of the generator and associated mechanism aTe well known and, therqfore, not described herein.
Beneath the table top 16 is located a removable Bucky tTay 32 which includes a film caTrieT or cassette (not shown) which is ada~ted to receive x-radiation from the generator 30. The details of the film-supporting mechanism are also well known and, there-fore, not described herein.
.~
` The table *op 16 in the position shown in Fig. 1 corresponds ,~
to ~he rest or lowered position of conventional X-ray tables, which is about thirty-two inches above the floor, and may be raised by means to be descrlbed ~o the elevated position shown in Fig. 2, ~ which is about fifty-four inches above the floorO
`~ It has been found that when a conventional table top is dropped to the rest or lowered position shown in Fig. 1, it is ex-~, tremely difficult for an incapacitated patient to be assisted onto ~ .
~. ~
,', ~ $i~
the ~hirty-two inch high table top. Therefore, in accordance with this invention, the table top 16 may be lowered to a position as shown in Fig. 3 which is about nineteen inches from the 100r.
Thls dimension is approximately at chair height, thus making it considerably easier for a wheel~chair patient, ~or example, to slide directly from the chair onto the table top without assis-tance. After a patient is positioned on the table, the top may be elevated to any level up to about thirty-two or fifty-four inches, as may be convenient.
In further accordance with this invention, the means for raising and lowering the table top 16 comprises a hydraulically operated scissors mechanism as shown in Figs. 4-7. In Fig. 4 the table top 16 is shown in phantom and the Bucky tray is omitted for convenience.
The table top 16 is adjustably positioned on the carriage 18 for lateral movement, as mentioned before. However, a frame comprising a pair of longitudinal channel members 34 and 36 are disposed at the front and rea~ of the table and interconnect end panels 22 immediately below the carriage rails 38. On the under-; 20 side of each channel 36 at one end of che table is located an `` anchoT block 40 to each of which is pivotally attached the upper end of a scissors bar 42.
On a sheet metal platform 44 in the base 14 there are pro-.
vided, at the opposite end of the table structure, a pair of spaced bearing channels 46 within which are secured the lower ends of the respective scissors bar 42. In actuality, the lower ends of bars 42 carry rollers 43 which move longitudinally within the channels to allow the scissors to function, as will be described hereinafter.
. .
A pair of spaced anchor blocks 48 are also mounted on the `-platform 44 in vertical spaced rela*ion to the upper anchor blocks 40. Anchor blocks 48 serve to pivotally secure the lower ends of respective second scissors bars or arms 50. The bars 50 are adjustably supported by rOlleTS 50 ~Fig. 7) within respective channels 52 which are sultably mounted on the under sides of the channel members 36 in spaced vertical alignment with channels 46.
The bars 42-50 in each pair thus cross one anotheT and are pivot-ally connected together at their crossover points by pivots 54.
~rom this it will be seen that the scissors can be used as a jack to raise and lower the table top 16, and that with such a scissors arrangement the table top can be lowered to a much lower ~evel than can be achieved with vertical screws, rack and pinions or ` other mechanisms.
The means which is employed in the present invention for vertically adjusting the table top 16 comprises a hydraulic system ` such as the HydTaulic Power Pack No. 2022405 supplied by Dura Corp.
~` of Paris, Kentucky. Such a hydraulic system includes a pump and an electric motor for operating the pump to control flow of hydraulic fluid into and out of a hydraulic cylinder. The pump-motor unit is indicated at 56 and one unit is provided for each pair of scissors bars 42 and 50. Each unit is preferably mounted `~` on a rigidizing support plate 58 spanning respective opposed arms`~ and is operati~ely connected to a respective hydraulic cylinder ` 60.
`; Each cylinder 60 is pivotally attached at its lower end to ~` a respective bar 62 carried by the platform 44. The cylinders ` each contain the usual plunger having a plunger rod 64 extending out from the upper end thereof, and the outer ends of the plunger ~` rods 64 are pivo~ally connected to respective spaced lugs or ears66 on a yoke plate 68 as shown best in Pig. 7. The yoke plate ' ~
.
J~7 is provided with angled lugs or ears 70 in which the inner ends of the pivot pins 54 of the crossed scissor arms 42 and 50 are - secuTed.
Thus, it is to be understood that when the hydraulic cylin-deTs 60 are actuated to Taise the table top 16, the plunger rods 64 will pTojeCt upwardly out of the upper ends of the cylinders and, because of the pivotal connections with lugs 66, will move the plate 68 in an upwaTd direction. Since the pivot members 54 are also connected to the plate 68 by the lugs 70, this will cause the pivot members 54 and the scissor arms 42 and 50 to be raised. The arms are pi~oted at one end to bloc~s 40 and 48, as described. However, the opposite ends of the arms will roll on their rollers 43 and 51 within the respective channel blocks 52 and 46, thus allowing the scissor jack mechanism to raise the table top 16 to the desired level.
The hydraulic cylinders 60 can be similarly operated in the reverse direction to lower the scissor jack mechanism and consequently lower the table top. It will be understood that the scissor jack mechanism described will collapse into a ~ela-tivel~ small vertically dimensioned space, thus allowing the table top to be lowered to a level as low as about nineteen inches , .
from the floor.
The electrical control circuit for the described apparatus is relatively simple,as shown in Fig. 8. Two double-pole single-throw switches 72 and 74 are provlded and these are manually opeTated as by foot pedals 76 and 78 at the bottom front of the table. When switch 72 or 74 is closed, the motor 80 of the hydrau-lic system is driven in one directlon to cause the pump 82 to force fluid into a cylinder 60 to raise the table top 16. The circuit is completed through the solenoid valve 84 of the hydraulic .
.
cylinder. Although only one hydraulic system is disclosed in Pig. 8, it will be apparent that two systems could be operated by the same circuit.
Prom the foregoing it will be apparent that all of the objec-tives of this invention have been achie~ed by the appalatus shown and desc~ibed. HoweverJ it will be understood that various changes and modifications in the desc~ibed apparatus may be made by those skilled in ~he art. For example, it will be apparent that a sin-gle scissoT jack arrangement may be employed foT elevating and lowering the table top instead of the double jack structure dis-closed. Therefore, all matter shown and described is to be inter-preted as illustTative and not in a limiting sense.
: ' .
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:
, .
; -11 `
. , .
Claims (8)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. X-ray apparatus comprising a radiographic table having a base with a table-supporting bottom surface and upstanding side panels of a predetermined height less than nineteen inches as measured from said bottom surface, a frame having an elongated patient-supporting top surface spaced above said base and having depending side panels disposed in slidable telescopic relation-ship with corresponding side panels of the base, said frame side panels depending a distance less than nineteen inches as measured from said top surface, and adjustable support means for translationally raising and lowering said frame and said top surface relative to said base and said bottom surface, said support means being enclosed by said base and frame side panels and movable longitudinally with respect to said top surface when the frame and said top surface are lowered for storing the support means in a space having a vertical dimension between said top and bottom surfaces of less than nineteen inches and permitting the top surface to be located at substantially wheel chair height.
2. X-ray apparatus comprising a table with a top adapted to be lowered to a level at least approximately wheel chair height, said table having a base, a frame spaced above said base, means on said frame for supporting said top thereon and adjust-able support means for raising and lowering said frame and top, said support means being located on said base between the base and frame and having the frame mounted thereon, said support means being collapsible, when the frame and top are lowered, into a space having a restricted vertical dimension permitting the top to be located at substantially wheel chair height.
3. X-ray apparatus as set forth in claim 2 wherein said support means comprises scissor-like arm means including a crossed pair of oppositely rotatable arms pivotally connected together at their crossover point, and having respective end portions slidably connected to the top and the base for convert-ing vertical extension of the support means relative to the base into longitudinal extension of the support means relative to the base when said top is lowered to said wheel chair height.
4. X-ray apparatus as set forth in claim 3 wherein said support means includes drive means connected to said crossover point for raising and lowering said crossover point relative to said bottom surface in accordance with said raising and lower-ing of the top surface.
5. X-ray apparatus as set forth in claim 2 wherein said support means includes rotatable arm means for converting longi-tudinal extension of the support means relative to the base into vertical extension of the support means relative to the base when said top is raised from said wheel chair height.
6. X-ray apparatus comprising a table including a base having a table-supporting bottom surface, a frame having a patient-supporting top surface spaced above said base and sup-ported on the base for translational vertical movement relative to said bottom surface, and adjustable support means disposed between said top and bottom surfaces and connected to the frame for translationally raising and lowering said frame and said top surface relative to said base and said bottom surface, said support means comprising a jack structure which includes a first pair of longitudinally extending crossed arms having respective end portions pivotally secured to said base and said frame adjacent one end of the table, a second similarly positioned and attached pair of longitudinally extending crossed arms adjacent the opposite side of the table, said crossed arms of each pair being pivotally connected together at axially aligned crossover points, and drive means pivotally connected to said crossover points for raising and lowering said frame and said top surface relative to said bottom surface, said drive means comprising at least one hydraulic cylinder mounted at one end on said base and having a plunger rod attached to said crossover points, and means for operating said cylinder to cause said rod to move said crossover points selectively upwardly or downwardly in accord-ance with said translationally raising and lowering of said frame and said top surface.
7. X-ray apparatus as set forth in claim 6 wherein said arms have other respective end portions slidably secured to the base and frame at one end of the table for permitting longitudin-al movement of said other end portions of the arms as the top is raised and lowered.
8. X-ray apparatus comprising a table with a top adapted to be lowered to a level at least approximately wheel chair height, said table having a base, an elongated patient-supporting top surface spaced above the base, and adjustable support means disposed between the top surface and the base and connected to the top surface for raising and lowering the top surface relative to the base, said adjustable support means being extendable longitudinally along the elongated dimension of said top surface when the top surface is lowered to a position where the top surface is located substantially at wheel chair height, the amount of longitudinal extension of the support means along the elongated dimension of the top surface being changed when the top surface is above wheel chair height.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US91933278A | 1978-06-26 | 1978-06-26 | |
| US919,332 | 1978-06-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1128676A true CA1128676A (en) | 1982-07-27 |
Family
ID=25441905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA329,057A Expired CA1128676A (en) | 1978-06-26 | 1979-06-04 | Adjustable x-ray table |
Country Status (7)
| Country | Link |
|---|---|
| JP (1) | JPS555695A (en) |
| CA (1) | CA1128676A (en) |
| DE (1) | DE2925778A1 (en) |
| ES (1) | ES481801A1 (en) |
| FR (1) | FR2429583B1 (en) |
| GB (1) | GB2024616B (en) |
| IT (1) | IT1120438B (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3123926C2 (en) * | 1981-06-16 | 1985-08-29 | Siemens AG, 1000 Berlin und 8000 München | Mobile X-ray examination table |
| DE3228834A1 (en) * | 1982-08-02 | 1984-02-02 | Siemens Ag | LIFTING DEVICE FOR IN PARTICULAR A DENTAL PATIENT CHAIR |
| JPS6041955A (en) * | 1983-08-19 | 1985-03-05 | 株式会社東芝 | Bed elevator apparatus for ct |
| DE3344054A1 (en) * | 1983-12-06 | 1985-06-13 | Siemens AG, 1000 Berlin und 8000 München | PATIENT POSITIONING TABLE |
| JPS60126142A (en) * | 1983-12-09 | 1985-07-05 | 横河メディカルシステム株式会社 | Table mechanism |
| US4671728A (en) * | 1985-07-11 | 1987-06-09 | Applied Power, Inc. | Hydraulic system for a mobile transport vehicle that supports and positions a load relative to a docking structure |
| DE3803567A1 (en) * | 1988-02-06 | 1989-08-24 | Gen Electric Cgr Deutschland G | Patient supporting table |
| DE4321251A1 (en) * | 1993-06-25 | 1995-01-05 | Siemens Ag | Medical apparatus with a hydraulic unit |
| ES1044404Y (en) * | 1999-09-23 | 2000-09-01 | Suinsa Subcontratas Internacio | POLYPOSITIONABLE SUPPORT APPLICABLE AS A STRETCHER FOR CLINICAL USE. |
| JP4655586B2 (en) * | 2004-10-29 | 2011-03-23 | 株式会社島津製作所 | X-ray fluoroscopic equipment |
| WO2015031237A1 (en) * | 2013-08-30 | 2015-03-05 | General Electric Company | Table driving system for patient table |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1198892A (en) * | 1968-01-19 | 1970-07-15 | Hoskins & Sewell Ltd | Improvements relating to Beds |
| US3967126A (en) * | 1975-02-20 | 1976-06-29 | American Radiologic Systems Inc. | X-ray apparatus having table with improved top |
| US4073240A (en) * | 1976-11-02 | 1978-02-14 | Fly Howard G | Portable animal hospital table |
| JPS5442894A (en) * | 1977-09-12 | 1979-04-05 | Morita Mfg | Working mechanism of treatment table and treatment table device that use said table |
-
1979
- 1979-06-04 CA CA329,057A patent/CA1128676A/en not_active Expired
- 1979-06-11 GB GB7920240A patent/GB2024616B/en not_active Expired
- 1979-06-22 IT IT49514/79A patent/IT1120438B/en active
- 1979-06-22 ES ES481801A patent/ES481801A1/en not_active Expired
- 1979-06-26 DE DE19792925778 patent/DE2925778A1/en not_active Withdrawn
- 1979-06-26 FR FR7916385A patent/FR2429583B1/en not_active Expired
- 1979-06-26 JP JP8064279A patent/JPS555695A/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB2024616A (en) | 1980-01-16 |
| GB2024616B (en) | 1983-05-05 |
| FR2429583A1 (en) | 1980-01-25 |
| IT7949514A0 (en) | 1979-06-22 |
| IT1120438B (en) | 1986-03-26 |
| ES481801A1 (en) | 1980-02-16 |
| JPS555695A (en) | 1980-01-16 |
| DE2925778A1 (en) | 1980-01-03 |
| FR2429583B1 (en) | 1985-10-18 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |