US1669468A

US1669468A - Medical electrical apparatus

Info

Publication number: US1669468A
Application number: US84334A
Authority: US
Inventors: Heintze Conrad
Original assignee: Hanovia Chemical and Manufacturing Co
Current assignee: Hanovia Chemical and Manufacturing Co
Priority date: 1926-01-28
Filing date: 1926-01-28
Publication date: 1928-05-15
Anticipated expiration: 1945-05-15

Description

May 15, 1928.

C. HEINTZE MEDICAL ELECTRICAL APPARATUS Filed Jan. 28. 1926 Patented May 15,1928.

UNITED STATES 1,669,468 PATENT OFFICE.

QONRAD nnm'rzn, or cn'rcaeofrnnmois, ASSIGNOR TO nanovm CHEMICAL AND MFG. 00., a coaronarron or new JnasnY.

MEDICAL ELECTRICAL APPARATUS.

Application filed January 28, 1926. Serial 110.84334.

This invention relates to medical electrical a paratus,particularly it relates to apparatus adapted tobe used to exposehuman bodies for the purpose oftreatment to electric rays emanating'fromthe apparatus. It is well known to expose a human body to the ultra-violet formly by the ultra-violet rays. In addition thereto it was necessary to regulate the speed 'with'whic'h the lamp was moved with respect to the distance of the lamp from the body to be treated, because the eiiicicncy of the quartz lamp depends'onthe distance of the lamp from the body exposed to the rays of the lamp. The ratio in which the efliciency changes is as the square of the difference in distance. It is well known that an'overeX- posure of a body to the ultra-violet rays of aquartz lamp will result in bad injuries. If therefore the lamp is arranged very near to the body, it will be necessary to move the lamp with a much greater speed than would be necessary, if the lamp would be further away.

The object of the invention is therefore to overcome the disadvantages inherent to the apparatus used heretofore to expose a human body to the ultra-violet rays of a quartz lamp and to accomplish this object the apparatus according to the invention comprises means to move the quartz lamp of the apparatus at a uniform ratio of speed. A further object of the invention is to regulate the distance of the lamp fromthe body to be treated in such a manner, that the rays from the lamp will affect every portion of the bodyto acertain degree and a still further object of the invention is to adjust the speed of the movement of the lamp and the distance of the lamp from the body to be treated in relationto each other in such a manner, that the best results will be obtained with the smallest size lamp possible and with the least possibility of danger to the patient.

Another object of the invention is to pro videan apparatus the movement of the lamp whereof may be automatically reversed at the end of the path of movement in one direct-ion, so that the body of the patient may beexposed to the rays on one side during the travel of the lampin one direction and-on its'other side during the movement of the lamp in the other direction. Another object of the inventionis to provide an apparatus the driving power whereof is furnished by a reversible electric motor- A still further object of the invention is to provide means for automatically cutting out the motor without cutting out the lamp, when the latter has been returned to its starting position at the end of a treatment. It is well known, that a quartz lamp does not develop its full but that takes some time for aqu artz'lamp to reach its full efficiency. It is therefore a power immediately upon being switchedon,

saving of time to keep the quartz lamp *burning and cut out the motor, when changing patients. It is finally an object'of the invention to provide means for protecting the patient against the influence of the rays of the lamp, when thelatter is at a st-andstill, after the motor is cut out for the purpose of changing patients. j

With these and other objects =not specifically mentioned in view the invention consists-in certain parts and certain combinations of such parts more fully set forth in the following specification-and specifically mentioned in the appended claims.

In the drawings forminga part of the specification and wherein like parts are indicated by like reference characters Fig. 1 is an elevation of an apparatus embodying theinvention, the apparatus being indicated as suspended from the ceiling of a TOOIIl.

Fig. 2 is an end view of Fig. 1. a

' Fig. 3 is a perspective view showingthe frame of an apparatus according to the invention attached to a bench or a table adapted to'support a body to be treated.

A quartz lamp 1 of'wellknown construewardly upon a patient lying upon abench or table 3 (see-Fig. 3). To the'top portion of the reflectortrolley wheels 4; are attached in any convenient and suitable manner.

'tion is surrounded by a reflector 2 adapted i to direct the light rays of the lamp downsub-frame and the trolley member. The whole frame may be made of pipes connected together by means of standard fittings. Gnone of'the vertical members 8 a bracket 9 is secured supporting an electric reversible motor. A friction disc 11 is mounted on the shaft 12 of the motor and frictionally engages a second friction disc 13. The second disc is slidably but not rotatably mounted on a shaft 14 rotatably journaled in a casing15 fastened to and carried by the adjacent vertical member 8' and the trolley. member of the frame. The second disc 13. has a hub 16 surrounding the shaft 14 and extending outwardly from thedisc. A set screw 17 ex tends through the hub and engages the shaft 14 to hold the second disc in any adjusted position in relation to the first disc 11. By

looseningthe set screw the second discmay be moved radially to the first disc and thereby the ratio of speed transmitted by the first disc to the shaft 14 may be regulated. A w orm18 is mounted on the portion of; shaft .14 located inside. of the casing 15 or the worm may be formed integrally with said shaft. Another shaft 19 extending at; right angles to the shaft carrying the worm is arranged in the casing 15 and rotatably journaled therein. This shaft 19 carries a-worm gear 2O meshing with the worm 18 and a pulley 21.

On the other end of the frame 5 the vertical member 8 and the trolley member 6 support a second casing 22. A shaft 23 extendsthrough this casing and is rotatably that the reflector carrying the quartz lamp will be moved overthe whole length of the frame 5, when the motor 10 is startedyand that the ratio of speed of. thismovement can be regulated by the adjustment of the second disk 13 in relation to-the first disk 11. Eyes 29 are fastened to the casings .15 and 22,and chains 30 engaging these eyes extend upward therefrom and may be. his

tened in any desiredand suitable manner tolthe ceiling of the. room wherein the apparatus is located, or the chains may be trained over suitable pulleys (not shown) and counter weights (not shown) may be used to balance the frame, and the lamp carried there by in any desired distancefrom the patient to be treated. y

A switch device 31 has the

terminal posts

32 and 33. Theseposts are inserted in the shown in dotted lines.

toward the right.

circuit (not shown) feeding the motor 10. Normally the spring contact 34 contacts with both terminal posts and thereby closes the circuit. the inner end of the-spring contact a hookshaped member 35V is mounted having. an inclined cam surface 36. When the motor rotates in such direction, that the lamp travels to the right in Fig. 1 the 11pperright hand end of the reflector will engage the cam surface 36 and will liftthe hook shaped member andvthe spring; contact from the terminal post 32 thereby opening .the motor circuit, so that the motor is cut out and the movement of the lamp is stopped; In order to start the motor again while the spring contact is held in lifted position by thereflector a hand

operable switch posts

32 and 33 respectively,sothat the mo- .havingthe contacts 37 is provided. The contacts 37 are connected with. the terminal.

tor circuit will beclosed, when the contacts 7 37 are actuated by hand. Thus it will be seen, that at the end of its travel toward the right end in Fig.'1 the lamp will be automatically stopped and willnot start on its return movement until the, hand Q Operable contacts are actuated to,close.the circuit.

In the casing 15 shown on the left hand end ofFig. 1 areverseswitehis provided (not shown), which is actuated by. means of lever can) reverse themotor. In Fig. l the lever is shown in full lines in such a position as to causethe motor to rotate in such a direction, that the. lamp travels toward the.

left. The carrier member 28 at the left end of the reflector has a pin or the like extending toward the left. When the lamp approaches theend of its movement toward the left, the pin 39 will engage the lever 33 and move it into'the position. shown in Flg. 11 in dotted'lines thereby reversing the motor 10, so that the lamp movement is also reversed-and the lamp travels now toward the right hand end of the apparatus In the casing '22 locatedmat the right hand end of the frame a second lever 40 is pivotally mounted as at 41 and a steel cable or thelike 42 connects the

levers

38 and 40. \Vhen pin 39-moves lever 38 out of the position shown in full .lines into the one shown in. dotted lines the cable will. pull the lever 40 out of the position shown in full lines into the position The lever 40 has a pointed end engaging a spring .43 fastened to a shoulder 44 in the casing 22 and tending to hold the lever 40 in the adjusted position. The carrier member 28 ontheright hand end of the reflector is also provided with a pin or the like extending toward the right and adapted to engage the lever 40, when the lamp approach-es ,theend of itsmovement By this engagement the lever 40 will be returned into the position shown in full lines. At the same time will also the lever 38 be returned to the position shown in full lines so that the motor is again reversed to move the lamp toward the left. At approximately the same time however,

that the motor is reversed the spring switch and engage the frame members so that the carriers and the reflectors 48 supported by said carriers and surrounding the plain incandescent lamps may be angularly adjusted in relation to the frame and in ratio to the distance from the object to be exposed to the light rays.

On the right hand end of the frame, that is on the side where the movement of the lamp is interrupted, a shade 57 is fastened to the frame in any suitable manner. The shade extends underneath the lamp and parallel to the frame. It protects the patient against the rays emanating from the lamp, while the same stands still.

In Fig. 3 it is diagrammatically shown how an apparatus according to the present invention may be fastened or mounted on a bench or table adapted to support a patient to be treated with said apparatus. A bench or the like 3 may be constructed in any suitable manner, for instance as shown with a frame made of pipes, and t0 the end members 49 of said frame standards or posts 50 may be fastened in any suitable manner for instance by means of Ts 51. The standards support adjustable brackets 52 carrying pulleys 53. A cable 54 is trained over these pulleys and is fastened with one of its ends to trolley member 6 of the frame 5 corresponding to the members 6 and the frame 5 described above. A cable 55 is trained over one of the pulleys 53 and is fastened with one of its ends to the end of trolley member 6 opposite to the end to which cable 54: is fastened. The two free ends of the cables are connected to a counterweight 56, so that the frame 5 will be always kept in a horizontal plane while it is being moved up or down to adjust the distance of the lamps carried by frame 5" from the patient.

Having described my invention what I claim as new and desire to secure by Letters Patent is: Y

1. In a device of the class described a quartz lamp, a frame slidably supporting the lamp, means for moving the lamp along the: frame, means for reversing the move ment of the lamp, and means carried by the lamp for automatically actuating the reversing means upon arrival of the lamp at the end of its path of movement in either direction.

2. In a device of the class described a quartz lamp, a frame slidably supporting the lamp, means for moving the lamp along the frame, means for reversing the movementof the lamp, means carried by the lamp for automatically actuating the reversing means upon arrival of the lamp at the end of the path of its movement in either direction, and means adapted to be actuated by the lamp upon arrival thereof at the end of its path of movement in one direction for stopping the movement of the lamp.

3. In a device of the class described a quartz lamp, a frame slidably supporting the lamp, means for moving the lamp along the frame, means for driving said moving means, means for reversing the movement of the driving means, means carried by the lamp for automatically actuating the reversing means upon arrival of the lamp at the end of the path of its movement in either direction, and means adapted to be actuated by the lamp upon arrival thereof at the end of the path of its movement in one direction for stopping the movement of the driving means.

4. In a device of the class described a quartz lamp, a frame slidably supporting the lamp, means for moving the lamp along the frame, means for driving said moving means, means for reversing the movement of the driving means, means carried by the lamp for automatically actuating the reversing means, upon arrival of the lamp at the end of the path of its movement in either direction, means adapted to be actuated by the lamp upon arrival thereof at the end of the path of its movement in one direction for stopping the movement of the driving means, and hand operable means for starting the driving means, while the stopping means are operated by the lamp.

5. In a device of the class describeda quartz lamp, a frame slidably supporting the lamp, means for moving the lamp along arrival of the lamp at the end of the path of its movement in one direction, and means for preventing the rays of the lamp from striking the patient while the movement of the lamp is interrupted.

In witness whereof I have affixed hereunto my signature.

CONRAD II'EINTZE;