US3646349A - Irradiation device - Google Patents

Irradiation device Download PDF

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Publication number
US3646349A
US3646349A US43156A US4315670A US3646349A US 3646349 A US3646349 A US 3646349A US 43156 A US43156 A US 43156A US 4315670 A US4315670 A US 4315670A US 3646349 A US3646349 A US 3646349A
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United States
Prior art keywords
radiation
source
irradiation
screens
time
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Expired - Lifetime
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US43156A
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English (en)
Inventor
Andreas Fredericus Rietveld
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US Philips Corp
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US Philips Corp
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N5/00—Radiation therapy
    • A61N5/06—Radiation therapy using light
    • A61N2005/0664—Details
    • A61N2005/0667—Filters

Definitions

  • the creen apart for a et of time is constant for [5 l] Int. Cl. .1101] 37/00 each irradiation period.
  • the distance by which the screens are [58] Field of Search ..250/86; 350/271 displaced is adjusted in accordance with the day of the radiation treatment.
  • the device therefore operates with a constant irradiation time but variable radiation intensity.
  • the invention relates to an irradiation device comprising a reflector having at least one UV irradiation source incorporated therein, (such as a high-pressure mercury vapor discharge lamp).
  • the device is provided with two screens which are movable in a direction at right angles to the radiation path and which filter the UV radiation.
  • Such a device is known from the published Dutch Pat. application No. 6,600,788 (U.S. Pat. No. 3,466,443).
  • a device which is characterized in that it comprises means by which the screens are first moved apart over an adjustable distance in a programmed manner, which screens, during nonoperation of the device, entirely close the radiation path.
  • the screens are kept apart for a constant period of time, and are then moved again back to the closed position after which the radiation source is switched off.
  • the desirable increase in dosing is not obtained by constant levels of irradiation in the conventional manner, and gradually increasing the radiation time, but by increasing the intensity of the radiation as the cure progresses and keeping the exposure time short and constant.
  • the exposure time may be chosen to be, for example, minutes.
  • the screens which substantially prevent passage of the UV, and UV rays, are each time moved further apart as the cure progresses.
  • the irradiation device according to the invention may then be characterized as a device for short irradiation duration.
  • Screens of a suitable glass filter which takes away a considerable part of the visible light which causes dazzling, are preferably used so that it is less unpleasant for the person to be treated.
  • the discharge tube present in the irradiation device according to the invention needs a certain time to reach the operating temperature, a certain time should elapse between the instant of switching on the UV source and the instant of opening the screens.
  • such means provided for that purpose become operative only when the radiation intensity of the radiation source has reached a substantially constant value. This becomes possible, for example, by using a rather simpler time mechanism which is adjusted at a constant time.
  • the supply of the radiation source is preferably interrupted in an analogous manner a short period of time after the screens have been closed again.
  • the device is constructed so that said interruption can be delayed, if desirable, by adjusting the time switch device back again to the switching instant a short period of time before the beginning of opening the screens; in that case the device is ready for operation for a next person to be irradiated.
  • an irradiation device which has a particularly short radiation time for each day of the radiation cure, while in addition the danger of exposing a person to be irradiated to an excessive dose of radiation is prevented since the irradiation device automatically switches off after a certain irradiation time.
  • FIG. 1 is a perspective view of the irradiation device according to the invention in the opened position
  • FIG. 2 is a diagrammatic rear view of the device shown in FIG. 1, in which the cover plate is not shown,
  • FIG. 3 also diagrammatically shows the arrangement taken on the lines III-III of FIG. 1,
  • FIGS. 4 to 8 serve to illustrate the operation of the adjusting mechanism.
  • the irradiation device according to the invention in the example shown in formed as a box 1, to which a cover 3 is connected.
  • a reflector 7 is arranged in the box 1 which comprises a front plate 5.
  • a UV radiation source 9 formed as a high-pressure mercury vapor discharge lamp, and two IR radiators 11 and 13 are secured in said reflector.
  • the UV radiation source 9 is surrounded by two screens 15 and 17 which can be moved apart in the axial direction
  • FIG. 1 shows the screens in a slightly moved apart position.
  • These screens consist of a suitable colored glass filter which substantially prevent passage of the UV, and UV parts of the radiation spectrum of the radiation source 9 during operation.
  • the screens 15 and 17 are arranged within two rigidly secured metal cylinders 19 and 21.
  • the device is further provided with two adjusting dials 23 and 25 which are adjusted in accordance with the radiation program to be performed and are connected, in a manner to be described in detail, to an adjusting mechanism for switching on and 011' the radiation source 9 and the programmed opening and closing of the screens 15 and 17.
  • the front plate 5 also has a voltage switch 27, and selection switches 29 and 31 of the conventional type for switching on IR or UV+IR.
  • the device diagrammatically shown in FIGS. 2 and 3 comprises the adjusting dials 23 and 25 which are secured to the ends of shafts 33 and 35.
  • Discs 37, 39, 41 and 43 are secured to the shaft 35 and can hence be rotated by rotating the dial 25.
  • the shaft 35 is coupled to a toothed wheel 45 which itself meshes with a ring of teeth 47 secured to the shaft of an electric motor 48.
  • the other shaft 33 comprises two discs 49 and 51 secured thereto, and three discs 53, 55 and 57 which are secured together and can simultaneously be rotated relative 'to the shaft 33.
  • Levers 59, 61, 63 and 65 are secured between the shafts 33 and 35 and cooperate with the discs present on said shafts, they can be rotated about shafts 67 and 69, respectively The large the rotation of the disc 57, the more the screens 15 and 17 move apart.
  • the disks 37, 39, 41, 43, 49, 51, 53, 55 and 57, as well as the levers cooperating therewith, have a shape which is shown in detail in FIGS. 4, 5, 6, 7 and 8 serving for illustrating the operation. This will be described in greater detail hereinafter.
  • the irradiation device described in general is constructed to serve as an irradiation device for constant radiation duration and controllable radiation intensity. This control is obtained by choosing the screens 15 and 17 to consist of a material which substantially prevents transmission of the UV 5 and UV radiation and by adapting daily the distance over which the screens move apart. During nonoperation of this device the screens 15 and 17 are closed.
  • the person to be irradiated need operate only the on-off switch 27 and one of the selection switches 29, 31 (IR or UV-HR) and rotate the adjusting dial 23 to a position which corresponds to the desired irradiation day of a irradiation cure divided over a number of days. After these operations, everything runs off automatically.
  • the radiation source is switched on and only after said radiation source has reached its temperature are the screens opened and kept open for a constant period of time. The screens are then moved again to the closed position and the radiation source is automatically switched off after some decay time.
  • FIGS. 4-8 show the various possible positions of any two discs with a lever present between them.
  • the thick portion 93 of the lever 59 is pushed out of a recess of the disc 49.
  • the lever 59 then rotates about the shaft 67, the pawl 95 flips out of a recess of disc 37 and a switch 97 is operated as a result of which the lR-sources 11, 13 and/or the UV-source 9 are switched on.
  • the motor 48 for driving the ring of teeth 47 is switched on and the shaft 35 is thereby caused to slowly rotate.
  • the cam 99 of the disc 43 engages the lever 65 which is thereby rotated and releases the pawl 101 of the disc 55.
  • the torsion spring 79 can relax, the discs 53, 55, 57 being rotated over an angle which corresponds to the angle of rotation of the previously adjusted dial 23.
  • a pin 103 on the disc 53 moves in a groove 105 of the pawl wheel 51 up to the end of said groove; since the disc 57 is rotated over a given angle the screens 15 and 17 will be moved apart over a distance corresponding thereto by means of the belt 87 and the irradiation starts.
  • This belt is rigidly secured to the screens 15 and 17 by means of coupling members 86 and 88. Since the disc 53 has been rotated and the lever 63 runs over the toothed part of pawl disc 41, the dial 25 is blocked against back rotation from that instant on.
  • the lever 61 After an irradiation of approximately minutes the lever 61 is lifted by the cam on the disc 39 so that the end of the lever 61 constructed as a pawl 107 is released from the pawl wheel 51. Under the influence of the torsion spring 71, the discs 49, 51, 53, 55 are again moved back to their initial position. The pulley 57 also rotates back to its initial position so that the screens and 17 are closed again. The lever 63 is lifted again by the return movement of the disc 53. The pawl disk 41 and the shaft 35 can hence be rotated back.
  • An irradiation apparatus comprising a housing, a reflector carried on said housing, at least one UV irradiation source mounted within said reflector, a pair of movably mounted filter screens for blocking passage of at least a portion of said radiation and arranged within the reflector so as to be displaceable in a direction which is substantially at right angles to the path of radiation, a time program device for automatically adjusting the position of said filter screens with respect to said UV irradiation source so as to vary the intensity thereof over a predetermined period of time, adjusting means connected to said filter screens for causing displacement thereof in response to operation of said time program device means for initiating operation of said program device, whereby said filter screens remain in a position so as to fully block the radiation path during nonoperation of the irradiation apparatus, are then moved to adjusting positions during operation of the apparatus in response to operation of the time program device so as to vary the intensity of the radiation and be maintained at an open position with respect to the UV irradiation source for a set period of time, and then moved to
  • the irradiation apparatus further comprising means for initiating operation of the time program device after said screens have been returned to the fully closed position and prior to said automatic means switching off the source of radiation.
  • said time program device comprises a shaft-adjusting mechanism having a plurality of adjustment positions corresponding to the number of days of the radiation treatment, transmission means associated with each of said positions for connection with said filter screens so that said screens will be displaced a different distance from the fully closed position at each of said adjustment positions to thereby vary the intensity of radiation over the same period of time from one position to the next.
  • the irradiation apparatus further comprising at least one [K radiation source mounted on said reflector and arranged for operation with said UV radiation source, and wherein said UV radiation source comprises a high-pressure mercury vapor discharge lamp.

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  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Radiology & Medical Imaging (AREA)
  • Pathology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Radiation-Therapy Devices (AREA)
  • Apparatus For Disinfection Or Sterilisation (AREA)
  • Physical Or Chemical Processes And Apparatus (AREA)
US43156A 1969-06-07 1970-06-03 Irradiation device Expired - Lifetime US3646349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL6908713A NL6908713A (de) 1969-06-07 1969-06-07

Publications (1)

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US3646349A true US3646349A (en) 1972-02-29

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ID=19807132

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US43156A Expired - Lifetime US3646349A (en) 1969-06-07 1970-06-03 Irradiation device

Country Status (7)

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US (1) US3646349A (de)
BE (1) BE751586A (de)
DE (1) DE2025998A1 (de)
FR (1) FR2049991A5 (de)
GB (1) GB1260601A (de)
NL (1) NL6908713A (de)
SE (1) SE357305B (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789228A (en) * 1972-10-12 1974-01-29 J Bouchard Sterilizing apparatus
FR2342745A1 (fr) * 1976-03-05 1977-09-30 Mutzhas Maximilian F Appareil d'irradiation comportant une source de rayons ultraviolets
US4378583A (en) * 1980-12-10 1983-03-29 Rca Corporation Xenon flash lamp shield
US4740707A (en) * 1986-10-27 1988-04-26 Allan Thaw Portable tanning unit

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2352500C3 (de) * 1973-10-19 1982-07-29 W.C. Heraeus Gmbh, 6450 Hanau Bestrahlungsgerät mit einer Schaltung zur Bemessung der Dosis
DE3110915A1 (de) * 1981-03-20 1982-12-02 Ludger 5471 Wassenach Mersmann Therapiegeraet zur behandlung von wasser und/oder biologischen systemen mit magnetfeldern und/oder elektromagnetischen strahlungen und/oder elektrischen stroemen
DE3520659C2 (de) * 1985-06-08 1996-05-30 Helmut Eich Bestrahlungsgerät

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466443A (en) * 1966-01-25 1969-09-09 Quarzlampen Gmbh Radiation apparatus with an adjustable emission of ultraviolet radiations

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3466443A (en) * 1966-01-25 1969-09-09 Quarzlampen Gmbh Radiation apparatus with an adjustable emission of ultraviolet radiations

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3789228A (en) * 1972-10-12 1974-01-29 J Bouchard Sterilizing apparatus
FR2342745A1 (fr) * 1976-03-05 1977-09-30 Mutzhas Maximilian F Appareil d'irradiation comportant une source de rayons ultraviolets
US4378583A (en) * 1980-12-10 1983-03-29 Rca Corporation Xenon flash lamp shield
US4740707A (en) * 1986-10-27 1988-04-26 Allan Thaw Portable tanning unit

Also Published As

Publication number Publication date
FR2049991A5 (de) 1971-03-26
GB1260601A (en) 1972-01-19
NL6908713A (de) 1970-12-09
DE2025998A1 (de) 1970-12-10
BE751586A (fr) 1970-12-07
SE357305B (de) 1973-06-25

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