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Publication numberUS3250583 A
Publication typeGrant
Publication dateMay 10, 1966
Filing dateAug 31, 1964
Priority dateAug 31, 1964
Publication numberUS 3250583 A, US 3250583A, US-A-3250583, US3250583 A, US3250583A
InventorsPhillips Herbert M
Original AssigneePhillips Herbert M
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Dental operatory
US 3250583 A
Abstract  available in
Images(4)
Previous page
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Claims  available in
Description  (OCR text may contain errors)

May 10, 1966 H. M. PHILLIPS 3,250,583

DENTAL OPERATORY Filed Aug. 31, 1964 4 Sheets-Sheet 1 35 L la 1 Q i/m, E7

May 10, 1966 H- M. PHILLIPS 3,250,583

DENTAL OPERATORY Fil 1964 4 Sheets-Sheet 2 W [12 vEzzzar' May 10, 1966 H. M. PHILLIPS 3,250,583

DENTAL OPERATORY Filed Aug, 31, 1964 4 Sheets-Sheet 5 0, 1966 H. M. PHILLIPS 3,250,583

DENTAL OPERATORY Filed Aug. 31, 1964 4 Sheets-Sheet 4.

dmmlwlzkyddum M? United States Patent 3,250,583 DENTAL OPERATORY Herbert M. Phillips, 220 Woodstock, Kenilworth, Ill. Filed Aug. 31, 1964, Ser. No. 393,028 4 Claims. (Cl. 3122tl9) The present invention relates to facilities which are adapted to be utilized by a dentist in the practice of his profession. The invention is specifically directed to-a novel and unique form of dental facility, hereinafter referred to as a dental operatory.

In order that dental work may be performed upon a patient in the most eflicient manner, it is necessary that the dentist be permitted to gain working access to the patient when the patient is supported in any of a number of positions; that both the dentist and his assistant be able to work upon the patient simultaneously and in an efficient manner without inconvenience to either; and that the instruments and supplies which the dentist and his assistant utilize in their work be located in close proximity to each. In presently available facilities, however, such needs are not adequately served.

For example, in a conventional dental facility, a fixed supporting structure is conventionally positioned immediately adjacent one side of the patients chair and supports certain instruments, a water basin, a work tray, a light source, X-ray equipment and various conduits for water, air and gas. The opposite side of the chair is frequently occupied at least partially by a stationary cabinet. The location of these structures, which are fixed in place with respect to the patients chair, renders a large area adjacent to the patient essentially inaccessible to the dentist and makes it necessary for him to perform all of his services while occupying the remaining area. The location of these structures also hinders the work of the dental assistant and other auxiliary personnel who may assist the dentist, as during an operation. These persons must necessarily work in the area not occupied by the dentist. Frequently, the only area available is that located behind the patient, which area will generally not accommodate the desired number of personnel and from which work can be performed only with difficulty.

Furthermore, the fixed supporting structure generally is located adjacent to the foot of the chair so as to be in close proximity to the dentist when working on a patient supported in a sitting position. However, certain treatment and work performed by the dentist is most conveniently and efficiently accomplished when the patient is in a reclining position. Such work, for example, might include that performed on the teeth of the upper portion or arch of the mouth which, when the patient is in a reclining position, may be viewed without a dental mirror. However, the location and arrangement of the supplies and instruments of the dentist, as supported on the fixed supporting structure of a conventional dental facility or in a stationary cabinet and therefore located adjacent the feet rather than the head of the patient, renders the supplies and instruments generally out of reach of the dentist when working in the vicinity of the patients head, thus making work on the patient supported in such a position quite inconvenient.

Also, in conventional dental facilities which include a stationary supply cabinet, such a cabinet is generally located so as to be behind the dentist when he renders certain forms of treatment. Such an arrangement causes the supplies to be located out of convenient reach of the dentist while he is working on the patient and totally out of reach of the assistant or auxiliary personnel.

Finally, many dentists would prefer to work upon the patient when they themselves were in a seated position and the patient in a reclining position. However, in a 3,25@,583 Fatented May 10, 1966 See conventional dental facility, the instruments and supplies are so located that they cannot be reached by the dentist when he is seated, thus rendering work in such position inconvenient and impractical.

It is the principal object of the present invention to provide a dental operatory which enables a dentist to perform work upon a patient in the most convenient and efiicient manner.

An additional object of the invention is to provide a dental operatory which provides the dentist and an assistant or other auxiliary personnel with an efficient and essentially unobstructed access to the patient.

A further object of the invention is to provide a dental operatory in which instruments and supplies utilized in performing work upon a patient are located in close proximity to the dentist and other auxiliary personnel when working upon the patient.

A still further object of the invention is to provide a dental operatory which enables a dentist to work upon a patient supported in a reclining position while locating all supplies and instruments to be utilized by the dentist in close proximity to the area in which the dentist is working.

Another object of the invention is to provide a dental operatory which enables a dentist to perform work upon a patient when in either a standing or a seated position.

Still another object of the invention is to provide a dental operatory which affords the maximum utilization of working space by rendering possible the multiple use .of space.

Other objects and advantages of the invention will become apparent with reference to the following descrip tion and the accompanying drawings.

In the drawings:

FIGURE 1 is a perspective view of a dental operatory occupied by a patient and dentist showing various of the features of the invention;

FIGURE 2 is a view similar to that of FIGURE 1 but absent the patient and dentist, with certain of the components of the operatory being shown in different relative positions;

FIGURE 3 is an enlarged front view, partially in section, of a portion of the operatory of FIGURES 1 and 2;

FIGURE 4 is a fragmentary top view of the portion of the operatory shown in FIGURE 3;

FIGURE 5 is a sectional elevational view taken along line 5-5 of FIGURE 4;

FIGURE 6 is a sectional end view taken along line 6-6 of FIGURE 4;

FIGURE 7 is a sectional plan view taken along line 7-7 of FIGURE 3;

FIGURE 8 is a fragmentary sectional view taken along line 88 of FIGURE 3; 7

FIGURE 9 is a plan view of a portion of the operatory as viewed in the direction of the arrows 9-9 of FIG- URE 1; and

FIGURE 10 is an enlarged elevational view of a con trol panel of the operatory as shown in FIGURE 7.

Very generally, the present invention comprises a dental operatory 11 which includes a base or floor 13, a patient-receiving chair 15 supported on the base, and a wall section or unicabinet 17 located adjacent to the chair and positioned so as to be faced by a patient seated in the chair. The wall section 17 is adapted to contain substantially all of the instruments and supplies ordinarily utilized by the dentist in the treatment of a patient supported in the chair, and is constructed so as to he capable of straddling the chair when properly positioned relative therto.

Means 19 are provided for moving the wall section along a generally straight or rectilinear horizontal path toward and away from the chair and into and out of straddling relation thereto, and further means 21 are provided for raising and lowering the wall section relative to the base supporting the chair. The mobility of the wall section therefore makes it possible to position all of the supplies and instruments of the dentist in close proximity to the patient regardless of the position of the patient, i.e., regardless of whether the patient is supported in an upright seated position or in a generally horizontal reclining position. Consequently, the location of the instruments and supplies can be varied to accommodate the position of the patient preferred by the dentist. However, the mobility of the wall section, upon which the instruments and supplies are mounted, also permits adjustment of its position to a location in which its presence is not a hindrance either to the dentist or his assistant.

Referring now more specifically to the drawings, the base v133 upon which the chair is supported preferably defines the floor of a working area in which the dental services are performed. It is contemplated that the base be defined by a floor of a relatively small room, but it might also be defined by a portion of the floor of'a larger room if multiple operatories are desired, or might even be defined by a truck floor or the ground itself in a mobiletype operatory. In the illustrated embodiment, the base 13 is in the form of a platform which is elevated above the floor of the building, thereby providing space below the base to accommodate electrical wiring and conduits 14 which might extend, for example, from the chair 15 to corresponding equipment in the wall-section 17.

The chair 15 of the illustrated embodiment is styled to accommodate the contours of the body of a patient and includes a seat 23 and a back rest 25 which are preferably movable relative to one another so as to permit the chair .to support a patient in either a sitting position (FIG. 2) .or in a generally reclining position, such as the position shown in FIGURE 1. It is contemplated that the seat and backrest be automatically movable between the various positions by a suitable power mechanism (not shown) operated by controls on the rear of the back rest. The back rest also preferably supports a control switch for certain of the components of the wall structure 17, which switch is electrically connected to the Wall structure 17 by the electrical conduit 14. Arm rests 27 mounted at the sides of the seat 23 are pivotally connected to the seat and backrest so as not to restrict the relative movements caused to assume a lower position than it might when arranged to support a patient in a reclining position. Also, the chair can be positioned at various heights to render the patient conveniently accessible when the dentist is in either a standing position, or is seated, as upon a stool 31 (FIG. 1). The stool 31 preferably supports a control box 32 containing switches by means of which certain of the power instruments such as drills utilized by the dentist are operated. Electrical conduits 34 extend from the control box 32 to the chair 15 and thence to the wall structure 17 in the form of the electrical conduits 14.

The wall-section 17, sometimes referred to as a unicabinet because it incorporates features of both the conventional supporting structure or unit and the conventional cabinet, is suspended from a canopy 33 supported on rails 35 positioned above the base of the operatory forwardly of the chair 15. The canopy and, hence, the wall section are movable along the rails toward and away from the chair. The wall section is also vertically movable relative to the canopy so as to permit adjustment of the height of the wall section relative to the height of the Thus, when the chair is arranged so as to support a patient in an upright seated position, the chair may be tically disposed flange 39 which is securely fastened to one of the side walls 37, and a generally horizontally disposed flange 41, the upper surface of which defines a toothed rack 43.

The canopy 33 comprises a rigid frame 45 (FIGS. 4-6) which is of a Width approximating the distance between the side walls 37 and which is covered by a skirt 47 formed of wood panels which may be decorated, if desired, to provide the canopy with a pleasing appearance. Thus, the canopy 33 and, as will soon become apparent, the wall section or unicabinet 17, span the entire end of the operatory and form, in effect, a movable wall which carries all of the instruments and supplies which the dentist will utilize in the treatment of substantially any patient.

Rotatably mounted on the frame 45 is a pair of hori- Zontal'ly disposed shafts 4.9 and 5t one of which (49) is positioned adjacent to the forward edge of the frame, i.e., the edge of the frame nearest the chair 15, and the other of which (50) is positioned adjacent to the rearward edge of the frame. Each shaft is of sufficient length to span the distance the rails 35 and each has a pinion gear 51 fixed to each of its ends for meshing engagement with therack 43. A pulley 53 is secured to the shaft 49 and is connected by a suitable belt55 to a reversible electric motor 57. Thus, when the motor 57 is operated, the shaft 49 is rotated and the canopy is driven either forwardly or rearwardly along the rails 35, depending upon the manner in which the motor 57 is energized. The shaft 50 is not driven but merely serves as a freely rotating support for the rearward end of the canopy. Limit switches 59' electrically connected to the power supply of the motor 57 are mounted on one end of the frame and are engageable with actuating blocks 61 secured to the adjacent side Wall so as to limit the extent of travel of the canopy in each direction by turning off the power when thedevice has been driven to the extent of its travel.

The vertically adjustable connection between the canopy 33 and the wall section 17 is effected by means of elongated vertically disposed threaded shafts 63 which are rotatably mounted on the frame 45 of the canopy and are received within the opening of an internally threaded block or nut 65 supported at the upper end of a tube 67 fixedly mounted on the Wall section in vertical disposition internally thereof. Four such shaft andtube connections are provided, each being spaced inwardly somewhat from a respective corner of the canopy frame 33 and in each of which the threaded shaft is enclosed within a sleeve 68 of rectangular cross section which is telescopically arranged with respect to the tube 67 to provide guidance during the relative movement of the tube and shaft.

The upper end of each shaft 63 has affixed thereto a sprocket 69 which, together with the sprocket of an adjacent shaft, is connected by means of a continuous chain 71 to one of a pair of drive sprockets 73 mounted on a driving shaft 75 of a gear reduction 77 driven by a reversible electrical motor 79. Idler wheels 81 are mounted on the canopy frame 45 to guide the chair, and a counterbalancing coil spring 83 extends between the canopy frame and a portion of the wall section to lessen the load on the motor 79.

The wall section or unicabinet 17 comprises generally a table or working surface 85 upon which is supported an upwardly extending hutch 87 and beneath which is suspended a lower portion including a pair of spaced-apart chests 59 which define therebetween an opening 91 adapted to be occupied by the chair 15 when the wall section is moved into juxtaposition thereto. When the wall section is so located, the chests 89 are disposed in flanking relation to at least a portion of the chair.

More specifically, the table or working surface 85 is defined by a flat elongated plank or board having a length approximating the distance between the side walls 37 and recessed at a pair of spaced locations to receive a tray 93 defining a plurality of shallow lidded compartments (FIG. 7) which may contain cotton rolls, cotton balils, gauze, heating equipment and equipment for sterilizing individual instruments. The tubes 67 which carry the nuts 65 and which, together with the threaded shafts 63 rotatably mounted on the canopy 33, provide the connection between the canopy and wall section, are fixed to the upper surface of the table 85 adjacent to the ends thereof and are enclosed by portions of the hutch 87, as hereinafter described. The lower ends of the counterbalancing springs 83 are also secured to the table intermediate the threaded shafts 67. A pair of limit switches 95 (FIG. 6) are secured to the sleeve 68 of the rearwardmost shaft adjacent to the right side of the wall section (as viewed by a patient) and engage actuating blocks 97 secured to a portion of the wall section to limit the extent of vertical movement thereof by turning off the power when the device has been driven to the extent of its travel.

The hutch 87 mounted on the table 85includes a back Wall 39 which extends upwardly from the rearward edge of the table and is of a width coextensive with that of the table. A mirror 161 is afiixed to the foreward face of the back wall adjacent the upper end thereof, and a bracket 103 is mounted on the wall adjacent to the mirror to provide support for a linkage 165 having an X-ray unit secured to its outer end. The electrical wires (not shown) connecting the camera to a suitable source of electricity preferably extend through the arms of the linkage 1%.

A pair of generally hollow columns 169 are supported adjacent to opposite ends of the table and enclose the threaded shafts 63, the tubes 67, and the sleeves 63 of the raising and lowering mechanism 21. Each column is provided with an opening closed by a door 111 to facilitate servicing of the shafts, tubes, and limit switches 95, and other enclosed equipment if necessary. One of the columns, that adjacent to the left side of the wall sec tion as viewed in FIGURE 3, is provided with a pair of storage bins 113 and 115 within which X-ray film and similar supplies may he kept. The column to the right as viewed in FIGURE 3 has mounted thereon a control panel 117 which will be referred to in greater detail shortly. Mounted on the side wall of the latter-mentioned column is a bracket 119 which supports a light fixture 121, and adjacent thereto is mounted a set of cable driven low speed drills 123 which can be swung down to the vicinity of the patient for use thereon.

The remainder of the hutch 37 comprises a series of bins 125 formed beneath the mirror 1G1 adjacent the upper surface of the table 85 and extending between the hollow columns 109 previously described. The bins are provided with doors 127 to protect the contents thereof and are adapted to contain supplies such as anesthetics, lubricants, alcohol, articulating papers, and dental floss.

The lower portion of the wall section comprises generally a drawer 129 located beneath the central portion of the table 85 and the pair of chests 89 suspended beneath the table on opposite sides of the drawer. The drawer 129 is adapted to contain tr-ays (not shown) of presterilized hand tools such as chisels, probes, mirrors, etc., some of which are used for substantially every patient. The trays can be removed after each patient has been attended to and placed in a sterilizing atmosphere and another tray can be substituted forthwith to prepare the operatory for the next patient.

As has previously been set forth, the Wall section is moved vertically relative to the canopy and, hence, relative to the base 13 and chair 15 by the motor-driven means 21. Also, the wall section is adapted to straddle the patient when supported in certain positions. In order to prevent injury to the patient supported in the chair (should the limit switches fail to operate) as the wall section is being lowered or the chair raised, a safety switch 133 is provided beneath the drawer 129 and comprises (FIG. 8) a plate 135 rigidly supported in spaced relation to the drawer and provided with a contact 137 onits upper surface which is electrically connected to the electrical power supply which elfects movement of the cabinet and chair. The contact is maintained in a conducting position by an overlying board or panel 139. When the panel 139 is lifted, as by the knee of a patient, the contact opens the electrical supply circuit and prevents any movement of the wall section and the chair. Preferably, however, a by-pass circuit (not shown) is provided which is controlled by a manually operable switch which, when closed, permits power to again be supplied to the chair and unicabinet to allow them to be separated, as to permit egress of the patient from the chair.

It is generally contemplated that the dentist will occupy a position adjacent to that side of the wall section 17 which is to the patients right as viewed in the drawing, this side hereinafter being referred to as the dentists side. The chest 89 on the dentists side preferably includes a work shelf 141 and several drawers 143 arranged beneath the shelf, the uppermost of which is provided on its outer wall with a light panel 145 to which X-ray pictures can be fastened and viewed. This drawer preferably serves as, a storage area for surgical instruments. The drawers beneath may contain such items as burrs and chucks for low speed drills, and hand instruments; wax and supplies utilized in making impressions; electrical surgery equipment; and certain special equipment.

Adjacent to the drawers of the chest is a panel 147 on which are supported nozzles 149 connected to a series of flexible conduits which lead to sources of water and air and to a vacuum source for a saliva ejector. The conduits can be withdrawn from the panel so as to be moved toward the mouth of the patient and means are provided for their withdrawal such as, for example, a coiling drum or suitable weights. A conduit is also preferably provided which conveys air under high pressure for the operation of a high speed hand tool. If desired,

. provision may also be made on the panel for the support of a syringe.

The chest on the opposite side of the wall section is located adjacent to the area in which the dental assistant works and also includes a work shelf 153 and a plurality of drawers 155 which may contain such items as chemicals used in making impressions, plaster, plastic acrylic materials and mixing pads; temporary cement materials, mixing pads, spatulas, tags for impressions; saliva ejectors and vacuum tubes; anesthetic needles, permanent cement, glass mixing slabs; spatulas, permanent fillings for root canals; neck bands, towels, capes, and head rest covers. The side of the chest contains a door 156 (FIG. 8) providing access to the wiring and other equipment enclosed within the chest.

Mounted adjacent to the latter-mentioned chest is a panel 157 supporting nozzles 159 connected to conduits leading to air, water and vacuum sources. Provision might also be made to support a syringe if desired. Beneath the panel 157 is a drawer 160 which supports a water basin 161 (FIG. 9) to receive the expectorate of a patient and which preferably supplies a stream of water to maintain the basin in a clean condition. The drawer can be moved to an out-of-the-way position, of course, whenever it is not needed. Beneath the drawer 160 is a door 162 providing access to certain of the enclosed equipment.

The control panel 117 by means of which movements of the wall section are regulated is seen most clearly in FIGURE 10 and includes switches 163, 165, 167 and 169 for effecting upward, downward, rearward and forward movement respectively of the wall section. A

:witch 171 is provided intermediate switches 163 and L65 and must be in a closed position before the closing )f either switch 163 or 165 will be efiective. A similar .witch 173 is provided intermediate switches 167 and [69. All of the switches are spring loaded. Switches [75, 177 and 179 are provided for the X-ray viewer, the

ieater, and the instrument sterilizer respectively.

It will be seen, therefore, that a dental operatory has :een provided which places the instruments, equipment 1nd supplies needed by the dentist in close proximity to he patient while not interfering in any way with the novements of the dentist in the vicinity of the-patient. 'u like manner, the technician is also provided with ready \ccess to the equipment and supplies which she requires, ind certain of the facilities on that side of the patient, iamely, the water basin, can be withdrawn to an out )f the Way position if desired.

Also, maximum utilization is made of the space within he operatory. For example, the space utilized by the iatient in getting into and out of the chair is subsequently ccupied by portions of the unicabinet. However, space vhich might frequently be needed by dental assistants 1nd auxiliary personnel is not encumbered by stationary :abinets or other fixed supporting structures. In fact, he prime working space surrounding the head portion )f the patient is essentially unencumbered.

Various of the features of the invention are set forth n the following claims.

What is claimed is:

1. A dental operatory comprising a base, a chair suplorted on said base, said chair including a vertically adustable seat portion and a backrest movable relative to aid seat portion so as to be capable of supporting a iatient in a reclining as well as in a sitting position and Lt various heights so as to permit the dentist to work in )oth a seated and a standing position, a wall cabinet sec ion including means for supporting the same above said ase adjacentsaid chair and positioned so as to be faced uy a patient seated in said chair, said wall section includng a cabinet, at work surface and support for a tray conaining dental tools and being adapted to carry substanially all of the instruments and supplies utilized by a lentist incident to the treatment of a patient-supported u said chair, at least a portion of said wall section being adapted to straddle a patient supported bvsaid chair, notor driven selectively operable means for effecting movement of said wall section along a generally horizonal rectilinear path toward and away from said chair and nto and out of straddling relation to a patient supported n said chair, and motor driven selectively operable means :perably disposed between said wall section supporting means and said wall section for effecting raising and low- :ring of said Wall section relative to the base supporting ;aid chair over a predetermined path between predeternined limits; so as to place said wall section at a selected ocat-ion along said path and thereby place said instrunents and supplies in close proximity to a dentist Working )n a patient supported in various positions in said chair with the dentist in either a sitting or a standing position.

a chair supported on said base, said chair including a vertically adjustable seat portion and a backrest movable relative to said seat portion so as to be capable of supporting a patient in a reclining as well as in a sitting position and at various heights so as to permit the dentist to work in both a seated and a standing position, the improvement which comprises a wall cabinet section, means for supporting said wall section above said base adjacent said chair and positioned so as to be faced by a patient seated in said chair, said wall section including a cabinet, a work surface and support for a tray containing dental tools and being adapted to carry substantially all of the instruments and supplies utilized by a dentist incident to the treatment of a patient supported in said chair, at least a portion of said wall section being adapted to straddle a patient supported by said chair, motor driven selectively operable means for eifecting movement of said wall section between predetermined limits along a generally horiz-ontal rectilinear path toward and away from said chair and into and out of straddling relation to a patient supported in said chair, and motor driven selectively operable means operably disposed between said wall section supporting means and said wall section for effecting raising and lowering of said wall section relative to the base supporting said chair over a predetermined path between predetermined limits so as to place said wall section at a selected location along said path and thereby place said instruments and supplies in close proximity to a dentist Working on a patient supported in various positions in said chair with the dentist in either a sitting or a standing position.

, 3. Apparatus according to claim 2 wherein said means for raising and lowering said Wall section includes at least one screw for advancing the Wall section in either direction and a counterbalance for relieving at least a portion of the weight on said screw.

4. Apparatus according to claim 2 including a safety switch mounted on said wall section and actuated by con tact with the patient for deactivating said means for lowering said wall section thereby preventing the descent of said Wall section and the crushing of the patient.

References Cited by the Examiner UNITED STATES PATENTS 3/1958 Canada.

CLAUDE A. LE ROY, Primary Examiner.

CHANCELLOR E. HARRIS, Examiner.

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Classifications
U.S. Classification433/27, 433/29, 312/312, 312/235.2, D24/178, 433/33, 378/196, 433/77, 312/247
International ClassificationA61G15/14, A61G15/00
Cooperative ClassificationA61G15/14
European ClassificationA61G15/14