US3655968A - X-ray examination chair - Google Patents

X-ray examination chair Download PDF

Info

Publication number
US3655968A
US3655968A US3655968DA US3655968A US 3655968 A US3655968 A US 3655968A US 3655968D A US3655968D A US 3655968DA US 3655968 A US3655968 A US 3655968A
Authority
US
United States
Prior art keywords
chair
means
support
patient
member
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 - Lifetime
Application number
Inventor
Robert M Moore
Norman H Lauterbach
David P Armstrong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
KERMATH Manufacturing CORP
Original Assignee
KERMATH Manufacturing CORP
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by KERMATH Manufacturing CORP filed Critical KERMATH Manufacturing CORP
Priority to US5086970A priority Critical
Application granted granted Critical
Publication of US3655968A publication Critical patent/US3655968A/en
Anticipated expiration legal-status Critical
Application status is Expired - Lifetime legal-status Critical

Links

Images

Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61BDIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B6/00Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
    • A61B6/04Positioning of patients; Tiltable beds or the like
    • A61B6/0407Tables or beds
    • A61B6/0421Tables or beds with immobilising means

Abstract

An X-ray examination chair is disclosed which is capable of swiveling and tumbling so that a patient restrained in the chair is positionable in various desired orientations for X-ray examination procedures. The chair includes an adjustable X-ray film cassette holder mounted for swiveling about the chair''s swivel axis and relative to the chair. The cassette holder is tumbled with the chair so that the cassette holder is readily positioned for X-ray exposures regardless of the chair orientation. Restraints against undesired movement of the patient in the chair include a removable arm and thigh restraining means and an adjustable head restraint structure. A restraining device for a child which positions a child for Xray exposures adjacent the cassette holder is also disclosed.

Description

United States Patent Moore et a1. a

[is] 3,655,968 [451 Apr. 11, 1972 1,573,571 2/1926 3,585,386 6/1971 H0rt0n.....

X-RAY EXAMINATION CI'IAIR Robert M. Moore; Norman 11. Lauterbach; David P. Armstrong, all of Richmond, Va.

Kermath Manufacturing Corporation, Richmond, Va. 1

Filed: June 29, 1970 Appl. No.: 50,869

Inventors:

Assignee:

US. Cl ..250/50, 250/55 Int. Cl. .1101] 37/20 Field of Search ..250/50, 54, 55, 56,57;

References Cited UNITED STATES PATENTS Pohl ....2so/s7 ..250/50 FOREIGN PATENTS OR APPLICATIONS 1,058,257 11/1953 France ..250/55 5 Primary Examiner-William F. Lindquist Attorney-Watts, Hofmann, Fisher & Heinke [57] ABSTRACT An X-ray examination chair is disclosed which is capable of swiveling and tumbling so that a patient restrained in the chair is positionable in various desired orientations for X-ray examination procedures.

Restraints against undesired movement of the patient in the chair include a removable arm and thigh restraining means and an adjustable head restraint structure.

A restraining device for a child which positions a child for X- ray exposures adjacent the cassette holder is also disclosed.

13 Claims, 7 Drawing Figures PATENTEDAPR H I972 8.655.968

SHEET 2 [1F 3 INVENTORS ROBE/27' M. MOORE NOE/WAN H. LAUTEEBACl-l DAV/D P. ARMSTRONG BYQV/M/ I W fiam 4 M X-RAY EXAMINATION CHAIR BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to X-ray examination equip ment and more particularly relates to an X-ray examination chair for orienting a patient to desired X-ray exposure positions.

Certain X-ray examination procedures have required a patient to be oriented to various positions for sequential or individual X-ray exposures. An example of such a procedure is pneumoencephalography. This is an X-ray examination procedure in which air is injected into the patients spinal column and permitted to rise to the top of the spinal column where fluid in the brain is displaced by the air. Thereafter the patient is oriented in various positions so that the location of the air, as the spinal fluid is displaced, can be observed by the use of an X-ray imaging device.

2. The Prior Art Patients have been supported by chair-like devices which enable orientation of the patient for X-ray exposures with the patient in a variety of positions. In the case of pneumoencephalographic examination, X-ray exposures are made with the patient in six basic positions: (I sitting upright; (2 a brow down" position in which the patient is positioned with the spine generally horizontal and facing downwardly; 3. a head hanging position in which the spine is substantially vertical and the patients head is adjacent the floor; (4 a brow up" position in which the spine is horizontal and the patient faces upwardly; (5 a left decupitas position in which the patients spine is horizontal and the patients left side is adjacent the floor; and (6 a right decupitas position.

Examination chairs have been proposed which produce a tumbling motion, Le. a rotation of the chair about a horizontal axis, as well as for swiveling motion. These proposals have not provided chairs in which the patient was adequately supported in various required positions. In most instances, the prior art chairs employed a network of belt-like straps or a combination of straps and blanket-like body restraining elements which were wrapped about the patients body to secure the patient to the chair. These devices were not sufiiciently rigid to adequately restrain the patients body against movement relative to the chair when the position of the chair was changed substantially. As a consequence, the patient was not only inadequately restrained but the patient was frequently subject to a certain amount of discomfort caused by the restraining devices.

Moreover, the prior art devices have not proposed suitable head restraints. In most of the prior art constructions, the head restraint assemblies were difficult to adjust properly, lacked rigidity and were supported on the chairs at locations which were not well suited for rigid support of a patients head.

The prior art proposals have not provided conveniently arranged and operated X-ray imaging devices, such as X-ray film cassette holders. The prior art devices sometimes employed cassette holders for supporting X-ray film adjacent the patients head. In some proposals these cassette holders formed part of X-ray equipment used in the examination. These arrangements made it quite difi'lcult, in some cases, to make proper exposures. In other proposals, the cassette holders were detachably connected to the examination chair and frequently were required to be relocated during examination by detaching the reattaching them to the chair.

SUMMARY OF TFIE INVENTION The present invention provides a new X-ray examination chair having patient restraining means which rigidly and comfortably supports a patient in the chair regardless of the orientation of the chair, and wherein an X-ray imaging device is quickly and easily positioned for exposures with respect to the patient regardless of the chair orientation.

In a preferred construction, the new examination chair includes a portable base assembly having a chair support assembly rotatably connected to it. A chair assembly is connected to the chair support by a swivel construction permitting the chair to swivel about an axis with respect to the chair support. The chair support and chair are connected to the base by a drive shaft which rotates about a horizontal tumbling axis which is transverse to the swivel axis. The examination chair is portable and can be used in any examination room provided with a standard ceiling X-ray tube mount, or a head, skull or neuroradiological unit.

The chair assembly includes a seat, a back and a leg and foot support. The seat is normally in a plane which is transverse to the back and the leg and foot supports but the chair can be straightened to form a stretcher if desired.

The patient is maintained in position on the chair by chest straps which extend diagonally across the patients chest between two locations on the back of the chair. The patients feet and lower legs are positioned on the leg and foot support portion of the chair by suitable straps. The arms and thighs of the patient are restrained by an arm and thigh restraint assembly which is removably connected to the chair.

The thigh and arm restraint assembly includes a pair of arm rest members which are connectable to the seat of the chair by a pantograph linkage. Each pantograph linkage enables movement of its associated arm rest member relative to the seat with the arm engaging portions parallel to the chair seat.

The arm rest members are connected together by an articulating rod assembly extending between them across the patients lap. Thigh engaging elements are adjustable connected to the articulating rod assembly so that this rod assembly also restrains the patients thighs. The arm rest members carry straps which are adjustably attachable to the chair seat. These straps are tensioned so that the thigh engaging elements tightly engage the patients thighs and are then fastened in place to the seat. The patients arms are than strapped to the arm rest members.

An X-ray exposure support structure is carried by the chair support. The X-ray exposure support rotatably connected to the chair support for orbital motion about the swivel axis of the chair. The X-ray exposure support is attached to the chair supportso that the X-ray exposure support can be tumbled with the chair while maintained in position relative to the patient for an exposure. The exposure support is movable relative to the chair about the swivel axis so that the chair and patient may swivel with respect to the X-ray support structure or the exposure support structure may orbit about the chair and patient.

Further according to the invention, an improved head restraint assembly is provided which includes a head engaging device movably connected to a support frame on the chair. The head engaging device includes a chin or face rest and a strap which extends around the head. The chin rest is connected to the support frame by an adjusting rod and clamps so that the patients head can be firmly yet comfortably restrained against movement with respect to the chair. The support frame extends from the back of the chair about the patient and provides additional lateral support.

In a preferred embodiment, an infants seat is provided which can be attached to the chair during examination of an infant;

A principal object of the present invention is the provision of a new and improved X-ray examination chair which provides comfortable yet firm restraint of a patient in the chair and which is characterized by ease of obtaining X-ray exposures regardless of the orientation of the patient.

Other objects and advantages of the invention will become apparent from considering the following detailed description of a preferred embodiment made with reference to the accompanying drawings which forms a part of the specification.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of an examination chair embodying the present invention;

FIG. 2 is a side elevational view of the chair of FIG. 1;

FIG. 3 is a view of a portion of the chair seen from the plane indicated by the line 3-3 of FIG. 1;

FIG. 4 is a side elevational view of a portion of the chair shown in FIG. 1 and on a scale which is larger than the scale of FIG. 1, and with parts shown in different operative positions.

FIG. 5 is a view of a portion of the chair shown in FIG. 2 and on a scale which is larger than the scale of FIG. 2;

FIG. 6 is a side elevational view of a head restraining member of the chair of FIG. 1 and shown on a scale which is larger than the scale of FIG. 1; and

FIG. 7 is a perspective view of a seat for an infant patient.

DESCRIPTION OF A PREFERRED EMBODIMENT An X-ray examination chair 10 is illustrated in FIGS. 1 and 2. The chair 10 includes a base assembly 12 to which a chair supporting assembly 14 is rotatably connected. A chair assembly 16 is carried by the chair support 14 and is swivelable relative to the support. Patient restraints are associated with the chair assembly 16 for maintaining a patient in the chair as the chair is oriented to various positions with respect to the base 12. An X-ray exposure support structure 18 is also carried by the chair support assembly 14 for movement with the chair support assembly relative to the base. The chair 10 can be used with any standard X-ray ceiling tube mount or neuroradiological X-ray unit. The chair 16 is tumblable about the axis of rotation of the support 14 and swivelable so that the patient can be oriented as desired for examination.

The base assembly 12 includes parallel support legs 20 which preferably include casters 22 so that the chair is portable. The casters 22 may be provided with a suitable brake (not illustrated) for preventing movement of the base assembly 12 along the floor when undesired. A body 24 is supported by the legs 20 and a pedestal 26 extends upwardly from the body 24.

The pedestal 26 houses an electric drive motor (not illustrated). Which is connected to a drive shaft 30 through a gear reduction (not shown). The drive shaft 30 extends from the pedestal 26 to the chair support assembly 14 and is rotatable about a horizontal axis of rotation 32. The pedestal drive motor is energized through a motor speed control circuit which enables the drive shaft to be driven through an adjustable range of 0 to 2 revolutions per minute whereby the chair supporting assembly 14 can be tumbled with respect to the base. In the preferred construction, the chair can be tumbled in either direction of rotation about the tumble axis 32. The direction and speed of tumbling is governed by the operator from a control panel 260 on the pedestal.

The chair supporting assembly 14 includes a main support member 36 which extends in a generally vertical plane and horizontally extending arms 38, 40. The arm 38 supports the chair assembly 16 while the arm 40 supports the X-ray exposure housing structure 18.

The chair assembly 16 is connected to the arm 38 through a swivel construction 42. The swivel construction 42 includes an electric drive motor which effects rotation of a drive shaft 43 through a suitable gear reduction. The electric motor and gear reduction may be of any suitable construction and are therefore not shown in detail.

The shaft 43 is driven about a swivel axis 44 which is perpendicular to and intersects the horizontal tumbling axis 32. Swiveling movement is limited to a 200 range about the axis 44 in the preferred construction although a greater amount of swiveling rotation can be obtained if desired. The swiveling speed of the chair is governed by motor speed control circuitry and the swiveling speed and direction is governed from the control panel by the operator.

The chair assembly 16 includes a seat section 50, a back section 52 and a leg and foot support section 54. The seat 50 has a base plate 56 fixed to the shaft 43 and a body 58 supported by the base plate 56. The back 52 includes side frames 60, 62 and a top cross frame 64 extending between the side frames 60, 62. A back support member 66 is attached to the frame members 60,62 and 64 to support the patient's back. An access opening 68 formed in the back support member 66 allows lumbar punctures to be made while the patient is seated in the chair.

The leg support 54 and back 52 are pivotally connected to the seat 50 so that the chair sections can be straightened out and locked in place to form a stretcher. During use as a stretcher, a head support element (not shown) is connected to the back 52 for supporting the patients head and shoulders.

The patient restraints immobilize the patient's head, arms, legs and upper abdomen so that the patient cannot move with respect to the chair. The restraints include chest straps 70,72 (FIG. 2) which diagonally cross the patients chest and each other to maintain the patients upper abdomen in one position in the chair. Each strap 70, 72 carries a shoulder pad 74 and has one end connected to the back section 52 by an anchor 76. The other end of the strap is connected to the opposite lateral side of the back section 52 by a buckle assembly 78. The straps 70,72 are formed by a webbing of the type used for aircraft and automobile seat belts. In the preferred embodiment the buckle assemblies are of a conventional metal to webbing type in which a cam-like buckle locks the webbing against movement through the assembly.

The patient's feet and lower legs are immobilized on the leg support section 54 by ankle restraint straps extending around the patient's ankles. The straps 80 have self-adhering sections of the fuzz latch" type which, when engaged, resist separation to firmly maintain the patient's ankles and feet in position. The fuzz latch" is provided by a section of material defining a nap and an engaging material section composed of fibers defining hooks which engage the nap. The strap 80 is preferably of the same webbing as the straps 70,72.

An arm and thigh restraining assembly 84 (FIGS. 3 and 4, immobilizes the patient's arms and thighs. The assembly 84 is formed by removable arm rest bodies 86,88 which are detachably connectable to the seat section of the chair as a unit. Each arm rest body and the associated parts are identical and therefore only the arm rest body 86 is described in detail in its relation to the seat section, see FIG. 4. The arm rest body 86 forms one bar on a four bar linkage 90 of the pantograph type. The linkage 90 includes parallel links 92,94 which extend between pivots on the arm rest body 86 and pivots on the fourth link 96.

The link 96 is formed by a metal sleeve having a C-shaped cross sectional configuration and which enables removal of the arm rest from the chair. The sleeve 96 telescopes onto a cylindrical bar 98 fixed to the seat section 50 of the chair. The

bar 98 is parallel to the seat section 50 and therefore the linkage 90 maintains an arm engaging cushion 100 on the arm rest member 86 parallel to the seat regardless of the angular disposition of the parallel links 92,94 relative to the plane of the seat section. The sleeve link 96 is movable along the bar 98 The arm rest bodies 86,88 are rigidly connected together by an articulating rod assembly 104 extending between the bodies and across the seat section 50. The articulating rod assembly 104 The articulating rod assembly 104 includes a rod member 1040 and a surrounding sleeve 10412. The rod 104a is rigidly connected between each link 94. The links 94 are pinned to the opposite ends of the rod l04aa and thus move as a unit. The sleeve 104b carries a pair of padded thigh immobilizers 106,108. The thigh immobilizers are connected to the sleeve l04b by suitable adjusting clamps 110,112, respectively. The arm rest bodies serve as bushings for 104a and as supports for sleeve 1041) The assembly 84 is removed from the chair to enable the patient initially to sit in the chair. After the patient is seated, the assembly 84 is attached to the chair by telescoping the sleeves 96 over the seat bars 98 and clamping the sleeves 96 in position by tightening the clamp knobs 101 which act between the sleeves 96 and bars 98. The arm rest bodies are then lowered until the thigh immobilizers 106,108 firmly engage the patients thighs.

At this juncture, the arm rest bodies are secured to the seat section 50. In the preferred embodiment, each arm rest body is connected to the seat by straps 120,122 each of which has one end anchored to the respective arm rest body. These straps are illustrated in their operative positions in FIG. 1 but are omitted from FIGS. 2-4 for clarity of those FIGS. The straps extend to respective buckle assemblies 124,126 fixed to the seat section adjacent the respective arm rest body. When the straps 120,122 are tightened down, the thighs of the patient are immobilized and at the same time the arm rest cushions 100 are firmly positioned for supporting the patients arms. The buckles 124,126; straps 120,122; and the anchors for the straps may all be conventional and of the automotive vehicle seat belt assembly variety.

The patients arms are then secured to the cushions 100 by restraining straps 128 (FIG. 3) which are preferably the same as the ankle restraint straps 80. It is essential that the patients head be firmly restrained against movement relative to the chair as the chair orientation is changed since otherwise the examination might have to be repeated. The head restraint assembly 130 (FIGS. 1 and 6) immobilizes the patients head and includes a head support assembly 132 which is connected to a support frame 134 (FIG. 1). The head engaging assembly 132 includes straps 138 which extend about the head of the patient, a face or chin rest 140, a bracket 142 for supporting the rest 140 and straps 138, and an articulating linkage 144 between the bracket 142 and the frame 134.

The linkage 144 provides for adjustment of angularity and distance of the chair seat relative to the frame 134. The linkage 144 includes clamps 145 and 146, which connect the frame 134 to the bracket via a rod 148. The clamp 145 enables the rod 148 to be adjustably shifted along its axis relative to the frame 134, thus adjusting the distance between the frame 134 and the rest 140. The clamp 145 also permits adjustment of the angle of the rod 148 relative to the frame 134. Additionally, the clamp 146 permits angular adjustment of the chin rest in a vertical plane about a pivot axis at the end of the rod 148. The angular adjustment afforded by these two clamps assures that the chin rest can be accommodated to any given patient in the chair.

The construction of the chin rest 140 and spring bracket 142 enables secure gripping and support of widely varying skull configurations by the head restraint. The spring bracket 142 is comprised of a pair of leaf springs 142a, 142b, the projecting ends of which are resiliently forced apart by the chin rest 140 which is attached between the spring ends via screws and spacer blocks.

The chin rest 140 is a generally V-shaped stiffly resilient member having a foam rubber coating on its face engaging surface. The apex of the chin rest 140 is screwed to an adjusting shaft 149 which is movable on its axis by turning an adjusting knob 150. The knob 150 is connected to a driving screw which draws the shaft 149 away from the chin rest or urges the shaft 149 toward the chin rest depending on the direction of rotation of the knob 150. The knob, driving screw and shaft 149 are mounted in the same body with the clamp 146, and the ends of the leaf springs are screwed to this block.

When the knob 150 is turned the V-angle of the chin rest is changed to accommodate the facial structure of a given patient. In the adjusted position of the chin rest the leaf springs react against the sides of the chin rest tending to reduce the V- angle. This provides a gripping action between the chin rest and the patients face as the face is supported. The straps 138 extend around the patients head and are secured together by a hook and nap type latch as is described above. The hook or nap latch element of the strap is carried on the bracket in the preferred embodiment.

The support frame 134 is connected to the side frames 60,62 by rod and sleeve connections each formed by a cylindrical rod-like member 151 attached to one side frame, a sleeve 152 extending over the rod 151 and a sleeve clamp 154 by which the frame 134 is secured to the chair back. This rod and sleeve connection is substantially identical to the connection described above in reference to the arm rests 86,88.

Referring now to FIGS. 1 and 5, the X-ray exposure support structure 18 is carried on the arm 40 of the chair support structure and includes an X-ray film cassette holder carried by a support rod 162 extending parallel to the swivel axis 44.

The cassette holder 160 and support rod 162 move orbitally i.e., 360 rotation) about the swivel axis 44 on a rotatable link arm 164. The link arm 164 is connected to the arm 40 by a pivot construction 166. An elongate slot 168 is formed in the am 164. The rod 162 is adjustably mounted in the slot. The rod 162 is adjustably movable along the arm 164 in the slot 168 to control the distance between the cassette holder and the swivel axis 44. The rod 162 can be locked in adjusted positions in the slot 168 by turning a locking knob 162a.

The cassette holder 160 is connected to the rod 162 by a clamp 170 which enables the cassette holder 160 to be slid up and down the rod 162 and maintained in adjusted positions. A universal ball and socket joint 174 connects the cassette holder 160 to the clamp assembly 170. The joint 174 enables the cassette holder to be tilted to otherwise universally moved relative to the clamp assembly if desired for a given X-ray exposure. The rod member 162 is formed by a sleeve member 162a telescoped over a rod member 162b. Further vertical adjustment of the cassette holder 160 is enabled by adjusting a clamp 175 between the members 162a, 162b.

A childs seat 176 for use with the new chair is illustrated in FIG. 7. The childs seat includes a seat support assembly 178 detachably mounted upon the chair l6 and a seat assembly 180 carried by the support 178. The support 178 includes a pair of arms 182 each of which is connected to the back section 52 of the chair assembly 16 by a sleeve 184 which fits over a respective one of the rod members 151. A clamp 186 is associated with each sleeve 184 to fix the sleeve in place on the rod member 151. Supports 188, 190 extend between the arms 182 and support a seat assembly 180.

Linkage plates 192 are also supported by the supports 188,190. Each linkage plate 192 is slidable along the supports 188,190 so that the linkage plates can be laterally adjusted.

The chair asembly includes a seat section 194, a leg support section 196 and torso immobilizers 198 located above the seat section 194. Link plates 200 extend along either side of the seat section 194 in confronting relationship with a respective one of the link plates 192. The lateral adjustments of link plates 192 on supports 188,190 allow lateral adjustment of torso immobilizers Each link plate 200 carries followers 202,204 which project from the link plate 200 through parallel angled slots 206,208 formed in the link plate 192. The followers 202,204 in the slots 206,208, respectively, coact to form a parallelogram linkage between the adjacent link plates. The follower 202 is formed by a clamp knob and locks the link plates in place relative to each other in an adjusted position.

The back section 52 of the chair assembly 16 fonns the back of the childs seat and it should be apparent from the inspection of the drawing that when the link plates 192,200 are free to move relative to each other and a child is placed in the seat, the weight of the child and seat, when the seat is in the position illustrated in FIG. 7, urges the seat portion 194 of the childs seat downwardly until the childs back is supported against the back section 52 of the chair assembly 16. Concomitantly, the childs chest and torso is urged against the back section of the chair by the torso immobilizers 198. At this juncture the knobs 202 on each side of the child's seat are tightened and the child is firmly restrained in position.

Straps, generally indicated at 212 are provided for securing the childs arms and legs in position. The cassette holder 18 is adjusted downwardly for appropriate positioning adjacent the childs head.

While a single embodiment of the invention has been illustrated and described herein in considerable detail, the present invention is not to be considered limited to the precise construction shown. It is the intention to cover hereby all adaptations, modifications and uses of the invention which come within the scope of the appended claims.

We claim: 1. In a medical examination chair:

a. a base;

b. a chair support member connected to said base for rotation about a horizontal tumbling axis;

. said chair support member including first and second support arms extending generally parallel to said tumbling rotation axis;

d. a chair assembly disposed between said support arms and comprising at least a seat element and a back supporting element;

e. swivel connection means between said seat element and said first support arm for enabling swiveling movement of said seat element about a swivel axis extending transverse to said tumbling axis and through said support arms;

. patient restraint means for maintaining 'a patient in a desired position with respect to said chair when said chair is oriented in various positions with respect to said tumbling and swivel axes; and,

g. an X-ray imaging device support structure connected to said second support arm of said chair support member for rotation about said tumbling axis with said support member;

b. said support structure comprising a supporting arm member, a second swivel connection means between said second support arm and said supporting arm enabling swiveling adjusting movement of said supporting arm about said swivel axis, an imaging device supporting rod projecting from said supporting arm toward said first support arm parallel to said swivel axis, said supporting rod orbitally movable about said swivel axis between desired X-ray exposure locations independently of swiveling of said chair, and means for adjusting the position of said supporting rod along said supporting arm radially relative to said swivel axis.

2. A chair as claimed in claim 1 wherein said imaging device comprises a film housing and means connecting said film housing to said supporting rod for movement between adjusted positions along said rod toward and away from said second support arm parallel to said swivel axis.

3. In a medical examination chair:

a. a base;

b. a chair support member connected to said base for rotation about a horizontal tumbling axis;

. said chair support member including a support arm extending generally parallel to said tumbling rotation axis;

(1. a chair assembly having at least a seat element and a back supporting element;

e. swivel connection means between said chair seat and said support arm for providing swiveling movement of said seat about a swivel axis extending transverse to said tumbling axis;

. patient restraint means for maintaining a patient in a desired position with respect to said chair when said chair is oriented in various positions with respect to said tumbling and swivel axes; and,

g. an X-ray exposure support structure connected to said examination chair;

h. said patient restraint means comprising thigh engaging restraint members, movable link means connecting said thigh engaging restraint members to said chair assembly for adjusting movement toward and away from a patients thighs, and means for securing said link means in a position with respect to said chair assembly wherein said thigh restraint members firmly engage a patients thighs.

4. A chair as claimed in claim 3 wherein said patient restraint means further includes arm support members, said link means comprising first and second body members carrying said thigh restraint members and said arm support members, pantograph linkages connecting said first and second body members to opposite lateral sides of said chair assembly, and an articulating member extending between said body members for articulating motion thereof.

5. A chair as claimed in claim 4 and further including means for connecting said thigh restraint members to said articulating member.

6. A chair as claimed in claim 4 wherein said means for securing said link means in position comprises straps connecting said first and second body members to said chair assembly.

7. A chair as claimed in claim 3 wherein said restraining means further comprises a head restraint assembly comprising:

a. a generally V-shaped head engaging member resiliently deflectable to change the apex angle;

b. at least first and second spring members supporting said head engaging member and exerting biasing forces on said head engaging member tending to reduce said V angle; and,

c. means connected to said head engaging member to adjustably alter said V angle.

8. The examination chair claimed in claim 3 wherein said linkage means comprises a pantograph linkage and said thigh engaging members are maintained in a predetermined orientation with respect to said seat element during adjusting movement of said linkage means.

9. The examination chair claimed in claim 8 wherein said patient restraint means further comprises arm restraining means comprising arm supporting structure connected to said linkage means for movement with said thigh restraint members and means for securing a patients arms to said arm supporting structure.

10. The examination chair claimed in claim 8 further including linkage means support structure connecting said linkage means to said chair assembly, said linkage means support structure comprising at least a member movable along a path of travel generally parallel to said seat element for adjusting the location of said seat means and said thigh restraint members relative to said SEAT element toward and away from said back supporting element.

1 1. In a medical examination chair:

a. a base;

b. a chair support member connected to said base for rotation about a horizontal tumbling axis;

c. said chair support member including a support arm extending generally parallel to said tumbling rotation axis; d. a chair assembly having at least a seat element and a back support element;

e. swivel connection means between said chair seat and said support arm for providing swiveling movement of said seat about a swivel axis extending transverse to said tumbling axis;

f. patient restraint means for maintaining a patient in a desired position with respect to said chair when said chair is oriented in various positions with respect to said tumbling and swivel axes; and,

g. an X-ray exposure support structure connected to said examination chair;

. said patient restraint means comprising a patients head supporting assembly connected to said chair assembly and comprising:

1. structure defining first and second supporting surfaces for engaging opposite sides of a patients head;

2. spring means for biasing said surfaces toward engagement with each other;

3. an adjustment member cooperating with said spring means to oppose the biasing force of said spring means and maintain said surfaces in spaced relationship; and,

4. means supporting said adjustment member for movement between adjusted positions relative to said spring means to variably control the spacing between said surfaces.

12. The examination chair claimed in claim 11 wherein said spring parts, said adjustment member connected to said flexible member and movable to flex said flexible member and said spring parts and thereby alter the spacing between said surfaces.

13. The chair claimed in claim 12 wherein said flexible member is a generally V-shaped member supporting said surfaces adjacent respective ends of its projecting legs, said UNITED STATES PATENT OFFICE 569 'CERTEFICATE OF (:OR EC'MoN Patent 968 h Dated A ril 11, 1972 Inventor(s) Robert M- Moore It is certified that error appears in the above-identified patent and that said Letters Patent are hereby corrected as shown below:

Column 2, line29, f'adjfi'stable" should be adjustably-;

' Column 3, line 62, "200" should be "220";

Column 4, line 60, "104aa" should be "104a";

Claim 10: Column 8, line 35 "seat" should be --linkage'-.

Signed and sealed this 19th day bf September 1972.

(SEAL) Alt'te's't' I} EDWARD M.FLETCHER,JR. ROBERT GOTTSCHALK Attesting Officer Commissoner of Patents

Claims (16)

1. In a medical examination chair: a. a base; b. a chair support member connected to said base for rotation about a horizontal tumbling axis; c. said chair support member including first and second support arms extending generally parallel to said tumbling rotation axis; d. a chair assembly disposed between said support arms and comprising at least a seat element and a back supporting element; e. swivel connection means between said seat element and said first support arm for enabling swiveling movement of said seat element about a swivel axis extending transverse to said tumbling axis and through said support arms; f. patient restraint means for maintaining a patient in a desired position with respect to said chair when said chair is oriented in various positions with respect to said tumbling and swivel axes; and, g. an X-ray imaging device support structure connected to said second support arm of said chair support member for rotation about said tumbling axis with said support member; h. said support structure comprising a supporting arm member, a second swivel connection means between said second support aRm and said supporting arm enabling swiveling adjusting movement of said supporting arm about said swivel axis, an imaging device supporting rod projecting from said supporting arm toward said first support arm parallel to said swivel axis, said supporting rod orbitally movable about said swivel axis between desired X-ray exposure locations independently of swiveling of said chair, and means for adjusting the position of said supporting rod along said supporting arm radially relative to said swivel axis.
2. A chair as claimed in claim 1 wherein said imaging device comprises a film housing and means connecting said film housing to said supporting rod for movement between adjusted positions along said rod toward and away from said second support arm parallel to said swivel axis.
2. spring means for biasing said surfaces toward engagement with each other;
3. an adjustment member cooperating with said spring means to oppose the biasing force of said spring means and maintain said surfaces in spaced relationship; and,
3. In a medical examination chair: a. a base; b. a chair support member connected to said base for rotation about a horizontal tumbling axis; c. said chair support member including a support arm extending generally parallel to said tumbling rotation axis; d. a chair assembly having at least a seat element and a back supporting element; e. swivel connection means between said chair seat and said support arm for providing swiveling movement of said seat about a swivel axis extending transverse to said tumbling axis; f. patient restraint means for maintaining a patient in a desired position with respect to said chair when said chair is oriented in various positions with respect to said tumbling and swivel axes; and, g. an X-ray exposure support structure connected to said examination chair; h. said patient restraint means comprising thigh engaging restraint members, movable link means connecting said thigh engaging restraint members to said chair assembly for adjusting movement toward and away from a patient''s thighs, and means for securing said link means in a position with respect to said chair assembly wherein said thigh restraint members firmly engage a patient''s thighs.
4. A chair as claimed in claim 3 wherein said patient restraint means further includes arm support members, said link means comprising first and second body members carrying said thigh restraint members and said arm support members, pantograph linkages connecting said first and second body members to opposite lateral sides of said chair assembly, and an articulating member extending between said body members for articulating motion thereof.
4. means supporting said adjustment member for movement between adjusted positions relative to said spring means to variably control the spacing between said surfaces.
5. A chair as claimed in claim 4 and further including means for connecting said thigh restraint members to said articulating member.
6. A chair as claimed in claim 4 wherein said means for securing said link means in position comprises straps connecting said first and second body members to said chair assembly.
7. A chair as claimed in claim 3 wherein said restraining means further comprises a head restraint assembly comprising: a. a generally V-shaped head engaging member resiliently deflectable to change the apex angle; b. at least first and second spring members supporting said head engaging member and exerting biasing forces on said head engaging member tending to reduce said V angle; and, c. means connected to said head engaging member to adjustably alter said V angle.
8. The examination chair claimed in claim 3 wherein said linkage means comprises a pantograph linkage and said thigh engaging members are maintained in a predetermined orientation with respect to said seat element during adjusting movement of said linkage means.
9. The examination chair claimed in claim 8 wherein said patient restraint means further comprises arm restraining means comprising arm supporting structure connected to said linkage means for movement with said thigh restraint members and means for securing a patient''s arms to said arm supporting structure.
10. The examination chair claimed in claim 8 further including linkage means support structure connecting said linkage means to said chair assembly, said Linkage means support structure comprising at least a member movable along a path of travel generally parallel to said seat element for adjusting the location of said seat means and said thigh restraint members relative to said SEAT element toward and away from said back supporting element.
11. In a medical examination chair: a. a base; b. a chair support member connected to said base for rotation about a horizontal tumbling axis; c. said chair support member including a support arm extending generally parallel to said tumbling rotation axis; d. a chair assembly having at least a seat element and a back support element; e. swivel connection means between said chair seat and said support arm for providing swiveling movement of said seat about a swivel axis extending transverse to said tumbling axis; f. patient restraint means for maintaining a patient in a desired position with respect to said chair when said chair is oriented in various positions with respect to said tumbling and swivel axes; and, g. an X-ray exposure support structure connected to said examination chair; h. said patient restraint means comprising a patient''s head supporting assembly connected to said chair assembly and comprising:
12. The examination chair claimed in claim 11 wherein said spring means comprises first and second spring parts associated respectively with said first and second surfaces and further including a flexible member extending between said spring parts, said adjustment member connected to said flexible member and movable to flex said flexible member and said spring parts and thereby alter the spacing between said surfaces.
13. The chair claimed in claim 12 wherein said flexible member is a generally V-shaped member supporting said surfaces adjacent respective ends of its projecting legs, said spring parts engaging said legs respectively and biasing said legs together, and said adjustment member connected to said flexible member at the apex thereof and movable to flex said member and alter the apex angle and therefore the distance between said surfaces.
US3655968D 1970-06-29 1970-06-29 X-ray examination chair Expired - Lifetime US3655968A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US5086970A true 1970-06-29 1970-06-29

Publications (1)

Publication Number Publication Date
US3655968A true US3655968A (en) 1972-04-11

Family

ID=21967993

Family Applications (1)

Application Number Title Priority Date Filing Date
US3655968D Expired - Lifetime US3655968A (en) 1970-06-29 1970-06-29 X-ray examination chair

Country Status (1)

Country Link
US (1) US3655968A (en)

Cited By (97)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795815A (en) * 1972-10-19 1974-03-05 M Weinstock Patient retention device
US3976051A (en) * 1975-08-05 1976-08-24 Kay Thomas D Head-positioning scintillation camera and head holder therefor
US4044265A (en) * 1976-03-05 1977-08-23 General Electric Company Mobile chair for panoramic dental x-ray machine
US4064401A (en) * 1976-02-04 1977-12-20 Danny Alden Marden Headholder assembly
US5168514A (en) * 1991-09-27 1992-12-01 Board Of Regents, The University Of Texas System Modular radiotherapy treatment chair and methods of treatment
US6722783B2 (en) 2001-12-31 2004-04-20 Ronnie W. Jackson, Sr. X-ray chair
US20070007790A1 (en) * 2005-07-06 2007-01-11 Hahn Douglas C Seat having suspension system
US20070007807A1 (en) * 2005-07-06 2007-01-11 Hahn Douglas C Seat having cushion height and recline adjustment mechanisms
US20070139732A1 (en) * 2005-12-16 2007-06-21 Fujifilm Corporation Movable part locking jig and image forming apparatus incorporating such movable part locking jig
US20070189461A1 (en) * 2004-07-01 2007-08-16 Andres Sommer Device for positioning a patient
WO2009142545A2 (en) * 2008-05-22 2009-11-26 Vladimir Yegorovich Balakin Charged particle cancer therapy patient positioning method and apparatus
US20090309046A1 (en) * 2008-05-22 2009-12-17 Dr. Vladimir Balakin Multi-field charged particle cancer therapy method and apparatus coordinated with patient respiration
US20090309040A1 (en) * 2008-05-22 2009-12-17 Dr. Vladmir Balakin Charged particle beam acceleration and extraction method and apparatus used in conjunction with a charged particle cancer therapy system
US20090309520A1 (en) * 2008-05-22 2009-12-17 Vladimir Balakin Magnetic field control method and apparatus used in conjunction with a charged particle cancer therapy system
US20090314960A1 (en) * 2008-05-22 2009-12-24 Vladimir Balakin Patient positioning method and apparatus used in conjunction with a charged particle cancer therapy system
US20090314961A1 (en) * 2008-05-22 2009-12-24 Dr. Vladimir Balakin Method and apparatus for intensity control of a charged particle beam extracted from a synchrotron
US20100008466A1 (en) * 2008-05-22 2010-01-14 Vladimir Balakin Charged particle cancer therapy and patient breath monitoring method and apparatus
US20100014639A1 (en) * 2008-05-22 2010-01-21 Vladimir Balakin Negative ion source method and apparatus used in conjunction with a charged particle cancer therapy system
US20100014640A1 (en) * 2008-05-22 2010-01-21 Dr. Vladimir Balakin Negative ion beam source vacuum method and apparatus used in conjunction with a charged particle cancer therapy system
US20100027745A1 (en) * 2008-05-22 2010-02-04 Vladimir Balakin Charged particle cancer therapy and patient positioning method and apparatus
US20100046697A1 (en) * 2008-05-22 2010-02-25 Dr. Vladmir Balakin X-ray tomography method and apparatus used in conjunction with a charged particle cancer therapy system
US20100060209A1 (en) * 2008-05-22 2010-03-11 Vladimir Balakin Rf accelerator method and apparatus used in conjunction with a charged particle cancer therapy system
US20100059686A1 (en) * 2008-05-22 2010-03-11 Vladimir Balakin Tandem accelerator method and apparatus used in conjunction with a charged particle cancer therapy system
US20100059687A1 (en) * 2008-05-22 2010-03-11 Vladimir Balakin Proton beam positioning verification method and apparatus used in conjunction with a charged particle cancer therapy system
US20100090122A1 (en) * 2008-05-22 2010-04-15 Vladimir Multi-field charged particle cancer therapy method and apparatus
US20100091948A1 (en) * 2008-05-22 2010-04-15 Vladimir Balakin Patient immobilization and repositioning method and apparatus used in conjunction with charged particle cancer therapy
US20100128846A1 (en) * 2008-05-22 2010-05-27 Vladimir Balakin Synchronized x-ray / breathing method and apparatus used in conjunction with a charged particle cancer therapy system
US20100127184A1 (en) * 2008-05-22 2010-05-27 Dr. Vladimir Balakin Charged particle cancer therapy dose distribution method and apparatus
US20100133444A1 (en) * 2008-05-22 2010-06-03 Vladimir Balakin Charged particle cancer therapy patient positioning method and apparatus
US20100141183A1 (en) * 2008-05-22 2010-06-10 Vladimir Balakin Method and apparatus coordinating synchrotron acceleration periods with patient respiration periods
US20100155621A1 (en) * 2008-05-22 2010-06-24 Vladmir Balakin Multi-axis / multi-field charged particle cancer therapy method and apparatus
US20100171447A1 (en) * 2008-05-22 2010-07-08 Vladimir Balakin Intensity modulated three-dimensional radiation scanning method and apparatus
US20100266100A1 (en) * 2008-05-22 2010-10-21 Dr. Vladimir Balakin Charged particle cancer therapy beam path control method and apparatus
US20110118529A1 (en) * 2008-05-22 2011-05-19 Vladimir Balakin Multi-axis / multi-field charged particle cancer therapy method and apparatus
US20110118530A1 (en) * 2008-05-22 2011-05-19 Vladimir Yegorovich Balakin Charged particle beam injection method and apparatus used in conjunction with a charged particle cancer therapy system
US20110118531A1 (en) * 2008-05-22 2011-05-19 Vladimir Yegorovich Balakin Multi-axis charged particle cancer therapy method and apparatus
US20110147608A1 (en) * 2008-05-22 2011-06-23 Vladimir Balakin Charged particle cancer therapy imaging method and apparatus
US20110150180A1 (en) * 2008-05-22 2011-06-23 Vladimir Yegorovich Balakin X-ray method and apparatus used in conjunction with a charged particle cancer therapy system
US20110196223A1 (en) * 2008-05-22 2011-08-11 Dr. Vladimir Balakin Proton tomography apparatus and method of operation therefor
US8016258B1 (en) 2010-04-30 2011-09-13 Seats, Inc. Suspension adjustment mechanism for low suspension seat
US20110233423A1 (en) * 2008-05-22 2011-09-29 Vladimir Yegorovich Balakin Multi-field charged particle cancer therapy method and apparatus
US8067748B2 (en) 2008-05-22 2011-11-29 Vladimir Balakin Charged particle beam acceleration and extraction method and apparatus used in conjunction with a charged particle cancer therapy system
US8093564B2 (en) 2008-05-22 2012-01-10 Vladimir Balakin Ion beam focusing lens method and apparatus used in conjunction with a charged particle cancer therapy system
US8229072B2 (en) 2008-07-14 2012-07-24 Vladimir Balakin Elongated lifetime X-ray method and apparatus used in conjunction with a charged particle cancer therapy system
US8374314B2 (en) 2008-05-22 2013-02-12 Vladimir Balakin Synchronized X-ray / breathing method and apparatus used in conjunction with a charged particle cancer therapy system
US8373145B2 (en) 2008-05-22 2013-02-12 Vladimir Balakin Charged particle cancer therapy system magnet control method and apparatus
US8378311B2 (en) 2008-05-22 2013-02-19 Vladimir Balakin Synchrotron power cycling apparatus and method of use thereof
US8399866B2 (en) 2008-05-22 2013-03-19 Vladimir Balakin Charged particle extraction apparatus and method of use thereof
US20130111665A1 (en) * 2011-11-03 2013-05-09 Philomina Duesdieker Elevating and Rotating Ultrasound Patient Stand
US8561748B1 (en) 2012-04-12 2013-10-22 Seats, Inc. Suspension configuration for a seat
US8625739B2 (en) 2008-07-14 2014-01-07 Vladimir Balakin Charged particle cancer therapy x-ray method and apparatus
US8627822B2 (en) 2008-07-14 2014-01-14 Vladimir Balakin Semi-vertical positioning method and apparatus used in conjunction with a charged particle cancer therapy system
US8637833B2 (en) 2008-05-22 2014-01-28 Vladimir Balakin Synchrotron power supply apparatus and method of use thereof
US8690114B2 (en) 2012-04-12 2014-04-08 Seats, Inc. Adjustable suspension system for off-road vehicle
US8718231B2 (en) 2008-05-22 2014-05-06 Vladimir Balakin X-ray tomography method and apparatus used in conjunction with a charged particle cancer therapy system
US8791435B2 (en) 2009-03-04 2014-07-29 Vladimir Egorovich Balakin Multi-field charged particle cancer therapy method and apparatus
US8841866B2 (en) 2008-05-22 2014-09-23 Vladimir Yegorovich Balakin Charged particle beam extraction method and apparatus used in conjunction with a charged particle cancer therapy system
US8907309B2 (en) 2009-04-17 2014-12-09 Stephen L. Spotts Treatment delivery control system and method of operation thereof
US8933651B2 (en) 2012-11-16 2015-01-13 Vladimir Balakin Charged particle accelerator magnet apparatus and method of use thereof
US8957396B2 (en) 2008-05-22 2015-02-17 Vladimir Yegorovich Balakin Charged particle cancer therapy beam path control method and apparatus
US8963112B1 (en) 2011-05-25 2015-02-24 Vladimir Balakin Charged particle cancer therapy patient positioning method and apparatus
US8969834B2 (en) 2008-05-22 2015-03-03 Vladimir Balakin Charged particle therapy patient constraint apparatus and method of use thereof
US8975600B2 (en) 2008-05-22 2015-03-10 Vladimir Balakin Treatment delivery control system and method of operation thereof
US9058910B2 (en) 2008-05-22 2015-06-16 Vladimir Yegorovich Balakin Charged particle beam acceleration method and apparatus as part of a charged particle cancer therapy system
US9056199B2 (en) 2008-05-22 2015-06-16 Vladimir Balakin Charged particle treatment, rapid patient positioning apparatus and method of use thereof
US9095040B2 (en) 2008-05-22 2015-07-28 Vladimir Balakin Charged particle beam acceleration and extraction method and apparatus used in conjunction with a charged particle cancer therapy system
US20150237327A1 (en) * 2015-04-30 2015-08-20 3-D XRay Technologies, L.L.C. Process for creating a three dimensional x-ray image using a single x-ray emitter
US9155911B1 (en) 2008-05-22 2015-10-13 Vladimir Balakin Ion source method and apparatus used in conjunction with a charged particle cancer therapy system
US9168392B1 (en) 2008-05-22 2015-10-27 Vladimir Balakin Charged particle cancer therapy system X-ray apparatus and method of use thereof
US9177751B2 (en) 2008-05-22 2015-11-03 Vladimir Balakin Carbon ion beam injector apparatus and method of use thereof
US9498649B2 (en) 2008-05-22 2016-11-22 Vladimir Balakin Charged particle cancer therapy patient constraint apparatus and method of use thereof
US9579525B2 (en) 2008-05-22 2017-02-28 Vladimir Balakin Multi-axis charged particle cancer therapy method and apparatus
US9616252B2 (en) 2008-05-22 2017-04-11 Vladimir Balakin Multi-field cancer therapy apparatus and method of use thereof
US9682254B2 (en) 2008-05-22 2017-06-20 Vladimir Balakin Cancer surface searing apparatus and method of use thereof
WO2017139548A1 (en) * 2016-02-10 2017-08-17 Nuvasive Specialized Orthopedics, Inc. Systems and methods for controlling multiple surgical variables
US9737734B2 (en) 2008-05-22 2017-08-22 Susan L. Michaud Charged particle translation slide control apparatus and method of use thereof
US9737272B2 (en) 2008-05-22 2017-08-22 W. Davis Lee Charged particle cancer therapy beam state determination apparatus and method of use thereof
US9737731B2 (en) 2010-04-16 2017-08-22 Vladimir Balakin Synchrotron energy control apparatus and method of use thereof
US9737733B2 (en) 2008-05-22 2017-08-22 W. Davis Lee Charged particle state determination apparatus and method of use thereof
US9744380B2 (en) 2008-05-22 2017-08-29 Susan L. Michaud Patient specific beam control assembly of a cancer therapy apparatus and method of use thereof
US9782140B2 (en) 2008-05-22 2017-10-10 Susan L. Michaud Hybrid charged particle / X-ray-imaging / treatment apparatus and method of use thereof
US9855444B2 (en) 2008-05-22 2018-01-02 Scott Penfold X-ray detector for proton transit detection apparatus and method of use thereof
US9907981B2 (en) 2016-03-07 2018-03-06 Susan L. Michaud Charged particle translation slide control apparatus and method of use thereof
US9910166B2 (en) 2008-05-22 2018-03-06 Stephen L. Spotts Redundant charged particle state determination apparatus and method of use thereof
US9937362B2 (en) 2008-05-22 2018-04-10 W. Davis Lee Dynamic energy control of a charged particle imaging/treatment apparatus and method of use thereof
US9974978B2 (en) 2008-05-22 2018-05-22 W. Davis Lee Scintillation array apparatus and method of use thereof
US9981147B2 (en) 2008-05-22 2018-05-29 W. Davis Lee Ion beam extraction apparatus and method of use thereof
US10029122B2 (en) 2008-05-22 2018-07-24 Susan L. Michaud Charged particle—patient motion control system apparatus and method of use thereof
US10029124B2 (en) 2010-04-16 2018-07-24 W. Davis Lee Multiple beamline position isocenterless positively charged particle cancer therapy apparatus and method of use thereof
US10037863B2 (en) 2016-05-27 2018-07-31 Mark R. Amato Continuous ion beam kinetic energy dissipater apparatus and method of use thereof
US10070831B2 (en) 2008-05-22 2018-09-11 James P. Bennett Integrated cancer therapy—imaging apparatus and method of use thereof
US10086214B2 (en) 2010-04-16 2018-10-02 Vladimir Balakin Integrated tomography—cancer treatment apparatus and method of use thereof
US10092776B2 (en) 2008-05-22 2018-10-09 Susan L. Michaud Integrated translation/rotation charged particle imaging/treatment apparatus and method of use thereof
US10143854B2 (en) 2008-05-22 2018-12-04 Susan L. Michaud Dual rotation charged particle imaging / treatment apparatus and method of use thereof
US10179250B2 (en) 2010-04-16 2019-01-15 Nick Ruebel Auto-updated and implemented radiation treatment plan apparatus and method of use thereof
US10349906B2 (en) 2010-04-16 2019-07-16 James P. Bennett Multiplexed proton tomography imaging apparatus and method of use thereof
US10376717B2 (en) 2010-04-16 2019-08-13 James P. Bennett Intervening object compensating automated radiation treatment plan development apparatus and method of use thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1573571A (en) * 1924-03-28 1926-02-16 Pohl Ernst Table for X-ray transradiation
FR1058257A (en) * 1952-06-12 1954-03-15 Improvements in medical examination devices
US3585386A (en) * 1969-06-05 1971-06-15 Jerry L Horton Radiographic chair rotatable about two mutually perpendicular axes

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1573571A (en) * 1924-03-28 1926-02-16 Pohl Ernst Table for X-ray transradiation
FR1058257A (en) * 1952-06-12 1954-03-15 Improvements in medical examination devices
US3585386A (en) * 1969-06-05 1971-06-15 Jerry L Horton Radiographic chair rotatable about two mutually perpendicular axes

Cited By (147)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3795815A (en) * 1972-10-19 1974-03-05 M Weinstock Patient retention device
US3976051A (en) * 1975-08-05 1976-08-24 Kay Thomas D Head-positioning scintillation camera and head holder therefor
US4064401A (en) * 1976-02-04 1977-12-20 Danny Alden Marden Headholder assembly
US4044265A (en) * 1976-03-05 1977-08-23 General Electric Company Mobile chair for panoramic dental x-ray machine
US5168514A (en) * 1991-09-27 1992-12-01 Board Of Regents, The University Of Texas System Modular radiotherapy treatment chair and methods of treatment
US6722783B2 (en) 2001-12-31 2004-04-20 Ronnie W. Jackson, Sr. X-ray chair
US20070189461A1 (en) * 2004-07-01 2007-08-16 Andres Sommer Device for positioning a patient
US20070007790A1 (en) * 2005-07-06 2007-01-11 Hahn Douglas C Seat having suspension system
US7390062B2 (en) * 2005-07-06 2008-06-24 Seats Incorporated Seat having cushion height and recline adjustment mechanisms
US7246836B2 (en) 2005-07-06 2007-07-24 Seats Incorporated Seat having suspension system
US20070007807A1 (en) * 2005-07-06 2007-01-11 Hahn Douglas C Seat having cushion height and recline adjustment mechanisms
US20070139732A1 (en) * 2005-12-16 2007-06-21 Fujifilm Corporation Movable part locking jig and image forming apparatus incorporating such movable part locking jig
US7855816B2 (en) * 2005-12-16 2010-12-21 Fujifilm Corporation Movable part locking jig and image forming apparatus incorporating such movable part locking jig
US8718231B2 (en) 2008-05-22 2014-05-06 Vladimir Balakin X-ray tomography method and apparatus used in conjunction with a charged particle cancer therapy system
US20090309040A1 (en) * 2008-05-22 2009-12-17 Dr. Vladmir Balakin Charged particle beam acceleration and extraction method and apparatus used in conjunction with a charged particle cancer therapy system
US20090309520A1 (en) * 2008-05-22 2009-12-17 Vladimir Balakin Magnetic field control method and apparatus used in conjunction with a charged particle cancer therapy system
US20090314960A1 (en) * 2008-05-22 2009-12-24 Vladimir Balakin Patient positioning method and apparatus used in conjunction with a charged particle cancer therapy system
US20090314961A1 (en) * 2008-05-22 2009-12-24 Dr. Vladimir Balakin Method and apparatus for intensity control of a charged particle beam extracted from a synchrotron
US20090309046A1 (en) * 2008-05-22 2009-12-17 Dr. Vladimir Balakin Multi-field charged particle cancer therapy method and apparatus coordinated with patient respiration
US20100014639A1 (en) * 2008-05-22 2010-01-21 Vladimir Balakin Negative ion source method and apparatus used in conjunction with a charged particle cancer therapy system
US20100014640A1 (en) * 2008-05-22 2010-01-21 Dr. Vladimir Balakin Negative ion beam source vacuum method and apparatus used in conjunction with a charged particle cancer therapy system
US20100027745A1 (en) * 2008-05-22 2010-02-04 Vladimir Balakin Charged particle cancer therapy and patient positioning method and apparatus
US20100046697A1 (en) * 2008-05-22 2010-02-25 Dr. Vladmir Balakin X-ray tomography method and apparatus used in conjunction with a charged particle cancer therapy system
US20100060209A1 (en) * 2008-05-22 2010-03-11 Vladimir Balakin Rf accelerator method and apparatus used in conjunction with a charged particle cancer therapy system
US20100059686A1 (en) * 2008-05-22 2010-03-11 Vladimir Balakin Tandem accelerator method and apparatus used in conjunction with a charged particle cancer therapy system
US20100059687A1 (en) * 2008-05-22 2010-03-11 Vladimir Balakin Proton beam positioning verification method and apparatus used in conjunction with a charged particle cancer therapy system
US20100090122A1 (en) * 2008-05-22 2010-04-15 Vladimir Multi-field charged particle cancer therapy method and apparatus
US20100091948A1 (en) * 2008-05-22 2010-04-15 Vladimir Balakin Patient immobilization and repositioning method and apparatus used in conjunction with charged particle cancer therapy
WO2009142545A3 (en) * 2008-05-22 2010-04-22 Vladimir Yegorovich Balakin Charged particle cancer therapy patient positioning method and apparatus
US20100128846A1 (en) * 2008-05-22 2010-05-27 Vladimir Balakin Synchronized x-ray / breathing method and apparatus used in conjunction with a charged particle cancer therapy system
US20100127184A1 (en) * 2008-05-22 2010-05-27 Dr. Vladimir Balakin Charged particle cancer therapy dose distribution method and apparatus
US20100133444A1 (en) * 2008-05-22 2010-06-03 Vladimir Balakin Charged particle cancer therapy patient positioning method and apparatus
US20100141183A1 (en) * 2008-05-22 2010-06-10 Vladimir Balakin Method and apparatus coordinating synchrotron acceleration periods with patient respiration periods
US20100155621A1 (en) * 2008-05-22 2010-06-24 Vladmir Balakin Multi-axis / multi-field charged particle cancer therapy method and apparatus
US20100171447A1 (en) * 2008-05-22 2010-07-08 Vladimir Balakin Intensity modulated three-dimensional radiation scanning method and apparatus
US20100266100A1 (en) * 2008-05-22 2010-10-21 Dr. Vladimir Balakin Charged particle cancer therapy beam path control method and apparatus
US20100008466A1 (en) * 2008-05-22 2010-01-14 Vladimir Balakin Charged particle cancer therapy and patient breath monitoring method and apparatus
US7943913B2 (en) 2008-05-22 2011-05-17 Vladimir Balakin Negative ion source method and apparatus used in conjunction with a charged particle cancer therapy system
US20110118529A1 (en) * 2008-05-22 2011-05-19 Vladimir Balakin Multi-axis / multi-field charged particle cancer therapy method and apparatus
US20110118530A1 (en) * 2008-05-22 2011-05-19 Vladimir Yegorovich Balakin Charged particle beam injection method and apparatus used in conjunction with a charged particle cancer therapy system
US20110118531A1 (en) * 2008-05-22 2011-05-19 Vladimir Yegorovich Balakin Multi-axis charged particle cancer therapy method and apparatus
US7953205B2 (en) 2008-05-22 2011-05-31 Vladimir Balakin Synchronized X-ray / breathing method and apparatus used in conjunction with a charged particle cancer therapy system
US20110147608A1 (en) * 2008-05-22 2011-06-23 Vladimir Balakin Charged particle cancer therapy imaging method and apparatus
US20110150180A1 (en) * 2008-05-22 2011-06-23 Vladimir Yegorovich Balakin X-ray method and apparatus used in conjunction with a charged particle cancer therapy system
US20110174984A1 (en) * 2008-05-22 2011-07-21 Vladimir Balakin Charged particle beam extraction method and apparatus used in conjunction with a charged particle cancer therapy system
US20110196223A1 (en) * 2008-05-22 2011-08-11 Dr. Vladimir Balakin Proton tomography apparatus and method of operation therefor
US20110218430A1 (en) * 2008-05-22 2011-09-08 Vladimir Yegorovich Balakin Charged particle cancer therapy patient positioning method and apparatus
US10143854B2 (en) 2008-05-22 2018-12-04 Susan L. Michaud Dual rotation charged particle imaging / treatment apparatus and method of use thereof
US20110233423A1 (en) * 2008-05-22 2011-09-29 Vladimir Yegorovich Balakin Multi-field charged particle cancer therapy method and apparatus
US8067748B2 (en) 2008-05-22 2011-11-29 Vladimir Balakin Charged particle beam acceleration and extraction method and apparatus used in conjunction with a charged particle cancer therapy system
US8089054B2 (en) 2008-05-22 2012-01-03 Vladimir Balakin Charged particle beam acceleration and extraction method and apparatus used in conjunction with a charged particle cancer therapy system
US8093564B2 (en) 2008-05-22 2012-01-10 Vladimir Balakin Ion beam focusing lens method and apparatus used in conjunction with a charged particle cancer therapy system
US8129694B2 (en) 2008-05-22 2012-03-06 Vladimir Balakin Negative ion beam source vacuum method and apparatus used in conjunction with a charged particle cancer therapy system
US8129699B2 (en) 2008-05-22 2012-03-06 Vladimir Balakin Multi-field charged particle cancer therapy method and apparatus coordinated with patient respiration
US8144832B2 (en) 2008-05-22 2012-03-27 Vladimir Balakin X-ray tomography method and apparatus used in conjunction with a charged particle cancer therapy system
US8178859B2 (en) 2008-05-22 2012-05-15 Vladimir Balakin Proton beam positioning verification method and apparatus used in conjunction with a charged particle cancer therapy system
US8188688B2 (en) 2008-05-22 2012-05-29 Vladimir Balakin Magnetic field control method and apparatus used in conjunction with a charged particle cancer therapy system
US8198607B2 (en) 2008-05-22 2012-06-12 Vladimir Balakin Tandem accelerator method and apparatus used in conjunction with a charged particle cancer therapy system
US10092776B2 (en) 2008-05-22 2018-10-09 Susan L. Michaud Integrated translation/rotation charged particle imaging/treatment apparatus and method of use thereof
US8288742B2 (en) 2008-05-22 2012-10-16 Vladimir Balakin Charged particle cancer therapy patient positioning method and apparatus
US8309941B2 (en) 2008-05-22 2012-11-13 Vladimir Balakin Charged particle cancer therapy and patient breath monitoring method and apparatus
US8368038B2 (en) 2008-05-22 2013-02-05 Vladimir Balakin Method and apparatus for intensity control of a charged particle beam extracted from a synchrotron
US8374314B2 (en) 2008-05-22 2013-02-12 Vladimir Balakin Synchronized X-ray / breathing method and apparatus used in conjunction with a charged particle cancer therapy system
US8373145B2 (en) 2008-05-22 2013-02-12 Vladimir Balakin Charged particle cancer therapy system magnet control method and apparatus
US8373143B2 (en) 2008-05-22 2013-02-12 Vladimir Balakin Patient immobilization and repositioning method and apparatus used in conjunction with charged particle cancer therapy
US8373146B2 (en) 2008-05-22 2013-02-12 Vladimir Balakin RF accelerator method and apparatus used in conjunction with a charged particle cancer therapy system
US8378311B2 (en) 2008-05-22 2013-02-19 Vladimir Balakin Synchrotron power cycling apparatus and method of use thereof
US8378321B2 (en) 2008-05-22 2013-02-19 Vladimir Balakin Charged particle cancer therapy and patient positioning method and apparatus
US8384053B2 (en) 2008-05-22 2013-02-26 Vladimir Balakin Charged particle beam extraction method and apparatus used in conjunction with a charged particle cancer therapy system
US8399866B2 (en) 2008-05-22 2013-03-19 Vladimir Balakin Charged particle extraction apparatus and method of use thereof
US8415643B2 (en) 2008-05-22 2013-04-09 Vladimir Balakin Charged particle beam acceleration and extraction method and apparatus used in conjunction with a charged particle cancer therapy system
US8421041B2 (en) 2008-05-22 2013-04-16 Vladimir Balakin Intensity control of a charged particle beam extracted from a synchrotron
US8436327B2 (en) 2008-05-22 2013-05-07 Vladimir Balakin Multi-field charged particle cancer therapy method and apparatus
WO2009142545A2 (en) * 2008-05-22 2009-11-26 Vladimir Yegorovich Balakin Charged particle cancer therapy patient positioning method and apparatus
US8487278B2 (en) 2008-05-22 2013-07-16 Vladimir Yegorovich Balakin X-ray method and apparatus used in conjunction with a charged particle cancer therapy system
US8519365B2 (en) 2008-05-22 2013-08-27 Vladimir Balakin Charged particle cancer therapy imaging method and apparatus
US10070831B2 (en) 2008-05-22 2018-09-11 James P. Bennett Integrated cancer therapy—imaging apparatus and method of use thereof
US8569717B2 (en) 2008-05-22 2013-10-29 Vladimir Balakin Intensity modulated three-dimensional radiation scanning method and apparatus
US8581215B2 (en) 2008-05-22 2013-11-12 Vladimir Balakin Charged particle cancer therapy patient positioning method and apparatus
US8598543B2 (en) 2008-05-22 2013-12-03 Vladimir Balakin Multi-axis/multi-field charged particle cancer therapy method and apparatus
US8614554B2 (en) 2008-05-22 2013-12-24 Vladimir Balakin Magnetic field control method and apparatus used in conjunction with a charged particle cancer therapy system
US8614429B2 (en) 2008-05-22 2013-12-24 Vladimir Balakin Multi-axis/multi-field charged particle cancer therapy method and apparatus
US8624528B2 (en) 2008-05-22 2014-01-07 Vladimir Balakin Method and apparatus coordinating synchrotron acceleration periods with patient respiration periods
US10029122B2 (en) 2008-05-22 2018-07-24 Susan L. Michaud Charged particle—patient motion control system apparatus and method of use thereof
US9981147B2 (en) 2008-05-22 2018-05-29 W. Davis Lee Ion beam extraction apparatus and method of use thereof
US8637833B2 (en) 2008-05-22 2014-01-28 Vladimir Balakin Synchrotron power supply apparatus and method of use thereof
US8637818B2 (en) 2008-05-22 2014-01-28 Vladimir Balakin Magnetic field control method and apparatus used in conjunction with a charged particle cancer therapy system
US8642978B2 (en) 2008-05-22 2014-02-04 Vladimir Balakin Charged particle cancer therapy dose distribution method and apparatus
US8688197B2 (en) 2008-05-22 2014-04-01 Vladimir Yegorovich Balakin Charged particle cancer therapy patient positioning method and apparatus
US9974978B2 (en) 2008-05-22 2018-05-22 W. Davis Lee Scintillation array apparatus and method of use thereof
US8710462B2 (en) 2008-05-22 2014-04-29 Vladimir Balakin Charged particle cancer therapy beam path control method and apparatus
US9937362B2 (en) 2008-05-22 2018-04-10 W. Davis Lee Dynamic energy control of a charged particle imaging/treatment apparatus and method of use thereof
US8766217B2 (en) 2008-05-22 2014-07-01 Vladimir Yegorovich Balakin Multi-field charged particle cancer therapy method and apparatus
US9910166B2 (en) 2008-05-22 2018-03-06 Stephen L. Spotts Redundant charged particle state determination apparatus and method of use thereof
US8841866B2 (en) 2008-05-22 2014-09-23 Vladimir Yegorovich Balakin Charged particle beam extraction method and apparatus used in conjunction with a charged particle cancer therapy system
US8896239B2 (en) 2008-05-22 2014-11-25 Vladimir Yegorovich Balakin Charged particle beam injection method and apparatus used in conjunction with a charged particle cancer therapy system
US8901509B2 (en) 2008-05-22 2014-12-02 Vladimir Yegorovich Balakin Multi-axis charged particle cancer therapy method and apparatus
US9855444B2 (en) 2008-05-22 2018-01-02 Scott Penfold X-ray detector for proton transit detection apparatus and method of use thereof
US9782140B2 (en) 2008-05-22 2017-10-10 Susan L. Michaud Hybrid charged particle / X-ray-imaging / treatment apparatus and method of use thereof
US8941084B2 (en) 2008-05-22 2015-01-27 Vladimir Balakin Charged particle cancer therapy dose distribution method and apparatus
US8957396B2 (en) 2008-05-22 2015-02-17 Vladimir Yegorovich Balakin Charged particle cancer therapy beam path control method and apparatus
US9757594B2 (en) 2008-05-22 2017-09-12 Vladimir Balakin Rotatable targeting magnet apparatus and method of use thereof in conjunction with a charged particle cancer therapy system
US8969834B2 (en) 2008-05-22 2015-03-03 Vladimir Balakin Charged particle therapy patient constraint apparatus and method of use thereof
US8975600B2 (en) 2008-05-22 2015-03-10 Vladimir Balakin Treatment delivery control system and method of operation thereof
US9018601B2 (en) 2008-05-22 2015-04-28 Vladimir Balakin Multi-field charged particle cancer therapy method and apparatus coordinated with patient respiration
US9044600B2 (en) 2008-05-22 2015-06-02 Vladimir Balakin Proton tomography apparatus and method of operation therefor
US9058910B2 (en) 2008-05-22 2015-06-16 Vladimir Yegorovich Balakin Charged particle beam acceleration method and apparatus as part of a charged particle cancer therapy system
US9056199B2 (en) 2008-05-22 2015-06-16 Vladimir Balakin Charged particle treatment, rapid patient positioning apparatus and method of use thereof
US9095040B2 (en) 2008-05-22 2015-07-28 Vladimir Balakin Charged particle beam acceleration and extraction method and apparatus used in conjunction with a charged particle cancer therapy system
US9744380B2 (en) 2008-05-22 2017-08-29 Susan L. Michaud Patient specific beam control assembly of a cancer therapy apparatus and method of use thereof
US9737733B2 (en) 2008-05-22 2017-08-22 W. Davis Lee Charged particle state determination apparatus and method of use thereof
US9168392B1 (en) 2008-05-22 2015-10-27 Vladimir Balakin Charged particle cancer therapy system X-ray apparatus and method of use thereof
US9177751B2 (en) 2008-05-22 2015-11-03 Vladimir Balakin Carbon ion beam injector apparatus and method of use thereof
US9737272B2 (en) 2008-05-22 2017-08-22 W. Davis Lee Charged particle cancer therapy beam state determination apparatus and method of use thereof
US9737734B2 (en) 2008-05-22 2017-08-22 Susan L. Michaud Charged particle translation slide control apparatus and method of use thereof
US9314649B2 (en) 2008-05-22 2016-04-19 Vladimir Balakin Fast magnet method and apparatus used in conjunction with a charged particle cancer therapy system
US9498649B2 (en) 2008-05-22 2016-11-22 Vladimir Balakin Charged particle cancer therapy patient constraint apparatus and method of use thereof
US9543106B2 (en) 2008-05-22 2017-01-10 Vladimir Balakin Tandem charged particle accelerator including carbon ion beam injector and carbon stripping foil
US9579525B2 (en) 2008-05-22 2017-02-28 Vladimir Balakin Multi-axis charged particle cancer therapy method and apparatus
US9616252B2 (en) 2008-05-22 2017-04-11 Vladimir Balakin Multi-field cancer therapy apparatus and method of use thereof
US9682254B2 (en) 2008-05-22 2017-06-20 Vladimir Balakin Cancer surface searing apparatus and method of use thereof
US9155911B1 (en) 2008-05-22 2015-10-13 Vladimir Balakin Ion source method and apparatus used in conjunction with a charged particle cancer therapy system
US8229072B2 (en) 2008-07-14 2012-07-24 Vladimir Balakin Elongated lifetime X-ray method and apparatus used in conjunction with a charged particle cancer therapy system
US8627822B2 (en) 2008-07-14 2014-01-14 Vladimir Balakin Semi-vertical positioning method and apparatus used in conjunction with a charged particle cancer therapy system
US8625739B2 (en) 2008-07-14 2014-01-07 Vladimir Balakin Charged particle cancer therapy x-ray method and apparatus
US8791435B2 (en) 2009-03-04 2014-07-29 Vladimir Egorovich Balakin Multi-field charged particle cancer therapy method and apparatus
US8907309B2 (en) 2009-04-17 2014-12-09 Stephen L. Spotts Treatment delivery control system and method of operation thereof
US10179250B2 (en) 2010-04-16 2019-01-15 Nick Ruebel Auto-updated and implemented radiation treatment plan apparatus and method of use thereof
US10349906B2 (en) 2010-04-16 2019-07-16 James P. Bennett Multiplexed proton tomography imaging apparatus and method of use thereof
US10029124B2 (en) 2010-04-16 2018-07-24 W. Davis Lee Multiple beamline position isocenterless positively charged particle cancer therapy apparatus and method of use thereof
US9737731B2 (en) 2010-04-16 2017-08-22 Vladimir Balakin Synchrotron energy control apparatus and method of use thereof
US10376717B2 (en) 2010-04-16 2019-08-13 James P. Bennett Intervening object compensating automated radiation treatment plan development apparatus and method of use thereof
US10357666B2 (en) 2010-04-16 2019-07-23 W. Davis Lee Fiducial marker / cancer imaging and treatment apparatus and method of use thereof
US10188877B2 (en) 2010-04-16 2019-01-29 W. Davis Lee Fiducial marker/cancer imaging and treatment apparatus and method of use thereof
US10086214B2 (en) 2010-04-16 2018-10-02 Vladimir Balakin Integrated tomography—cancer treatment apparatus and method of use thereof
US8016258B1 (en) 2010-04-30 2011-09-13 Seats, Inc. Suspension adjustment mechanism for low suspension seat
US8963112B1 (en) 2011-05-25 2015-02-24 Vladimir Balakin Charged particle cancer therapy patient positioning method and apparatus
US20130111665A1 (en) * 2011-11-03 2013-05-09 Philomina Duesdieker Elevating and Rotating Ultrasound Patient Stand
US9173622B2 (en) * 2011-11-03 2015-11-03 Creative Ultrasound Imaging, Inc. Elevating and rotating ultrasound patient stand
US20150374332A1 (en) * 2011-11-03 2015-12-31 Creative Ultrasound Imaging, Inc. Elevating and rotating ultrasound patient stand
US8561748B1 (en) 2012-04-12 2013-10-22 Seats, Inc. Suspension configuration for a seat
US8690114B2 (en) 2012-04-12 2014-04-08 Seats, Inc. Adjustable suspension system for off-road vehicle
US8933651B2 (en) 2012-11-16 2015-01-13 Vladimir Balakin Charged particle accelerator magnet apparatus and method of use thereof
US20150237327A1 (en) * 2015-04-30 2015-08-20 3-D XRay Technologies, L.L.C. Process for creating a three dimensional x-ray image using a single x-ray emitter
WO2017139548A1 (en) * 2016-02-10 2017-08-17 Nuvasive Specialized Orthopedics, Inc. Systems and methods for controlling multiple surgical variables
US9907981B2 (en) 2016-03-07 2018-03-06 Susan L. Michaud Charged particle translation slide control apparatus and method of use thereof
US10037863B2 (en) 2016-05-27 2018-07-31 Mark R. Amato Continuous ion beam kinetic energy dissipater apparatus and method of use thereof

Similar Documents

Publication Publication Date Title
US3604023A (en) True lateral body positioning arrangement for radiography
US3388700A (en) Means and process for effecting periodic body inversion
US3528413A (en) Limb support
US3284817A (en) Therapeutic cushion
US3167068A (en) Upright lumbo-sacral traction system
US3060925A (en) Treatment table
US3403675A (en) Universal dynamic traction carriage
US5014374A (en) Restraint stretcher
US6813788B2 (en) Variable length radiolucent surgical table extension
EP0224564B1 (en) Ergonomic seating assembly
RU2203119C2 (en) Device for restoring equilibrium of human body
US5027833A (en) Extrication and spinal restraint device
US4964400A (en) Surgical limb supporting apparatus with tension measuring device
US4372551A (en) Cardiac stress table
US3737923A (en) Cervical stabilization device
US6443877B1 (en) Compact, multi-choice exercise apparatus
US5388580A (en) Head holder for magnetic resonance imaging/spectroscopy system
US2614558A (en) Fracture supporting device
US6685658B1 (en) Device and method for a locomotion therapy
US2772881A (en) Exercising apparatus
US3650523A (en) Infant restraining board
US4616814A (en) X-ray head holder
US5531229A (en) Body part immobilization device
CN1196445C (en) Device for compression of lower extremities for medical imaging purposes
US4730606A (en) Apparatus for applying traction during oscillatory therapy