Patent US4177384A successfully refreshed from Google Patents.
US4177384A
Expired / Lapsed
US
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Apparatus for producing ultraviolet radiation
Assignee: Individual
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Filing: 1978-02-23
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Granted: 1979-12-04
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Expires: 1998-02-23
Abstract
Abstract Apparatus for treatment of psoriasis has a housing with an exit opening located in front of a battery of elongated cylindrical low-pressure mercury lamps which emit ultraviolet radiation in the UVB and UVA ranges, with abrupt decrease of radiation intensity at the wavelength of approximately 330 nm. The envelopes of the lamps absorb radiation in the wavelength band below approximatey 295 nm. Each lamp is partially surrounded by a trough-shaped reflector which reflects radiation issuing from the rear half and from the sides of the respective lamp. The reflectors cause the radiation to form a high-intensity radiation field close to the exit opening of the housing. If the exit opening is located above the lamps, it is covered by a plate which transmits radiation between 300 and 330 nm and serves as a support for the body of a patient. A similar apparatus can be installed above the support, and a third apparatus can be installed laterally of the other two apparatus so as to enable a patient to expose three sides of his or her body to ultraviolet radiation in the wavelength band between 300 and 330 nm.
Inventors
- 👤 Friedrich Wolff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 21:33
CPC Classifications
A; A61; A61N; A61N5/00; A61N5/06; A61N5/0613; A61N5/0616; A61N2005/0635; A61N2005/0636
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
94 words
Apparatus for selective treatment by ultraviolet radiation, especially for treatment of skin diseases including psoriasis, comprising a plurality of closely adjacent parallel elongated sources of ultraviolet radiation each including a low-pressure mercury lamp having a layer of luminous material, said sources being arranged to emit a continuous spectrum whose intensity is higly pronounced in the region between approximately 300 and 330 nm and decreases pronouncedly at the wavelength of approximately 330 nm; and filter means arranged to absorb radiation below approximately 295 nm, the transmissivity of said filter means increasing abruptly above 295 nm.
Claim 2
Dependent Claim
94 words
Apparatus for selective treatment by ultraviolet radiation, especially for treatment of skin diseases including psoriasis, comprising a plurality of closely adjacent parallel elongated sources of ultraviolet radiation each including a low-pressure mercury lamp having a layer of luminous material, said sources being arranged to emit a continuous spectrum whose intensity is higly pronounced in the region between approximately 300 and 330 nm and decreases pronouncedly at the wavelength of approximately 330 nm; and filter means arranged to absorb radiation below approximately 295 nm, the transmissivity of said filter means increasing abruptly above 295 nm.
Claim 3
Dependent Claim
18 words
Apparatus as defined in claim 1, wherein the number of said radiation sources is between 5 and 20.
Claim 4
Dependent Claim
14 words
Apparatus as defined in claim 2, wherein said number is between 10 and 12.
Claim 5
Dependent Claim
26 words
Apparatus as defined in claim 1, wherein said radiation sources are cylinders and the spacing between neighboring sources at most equals the diameter of a cylinder.
Claim 6
Dependent Claim
23 words
Apparatus as defined in claim 1, wherein each of said radiation sources includes a tubular glass envelope, said envelopes constituting said filter means.
Claim 7
Dependent Claim
36 words
Apparatus as defined in claim 1, further comprising a plurality of substantially trough-shaped reflectors, one for each of said radiation sources and each surrounding the respective radiation source along an arc of at least 180 degrees.
Claim 8
Dependent Claim
59 words
Apparatus as defined in claim 6, further comprising a housing for said radiation sources and said reflectors, said housing having an exit opening for ultraviolet radiation and said reflectors having front sides facing said exit opening, each of said reflectors having two side walls including substantially parallel front portions disposed between the respective radiation source and said exit opening.
Claim 9
Dependent Claim
67 words
Apparatus as defined in claim 7, wherein each side wall of each of said reflectors defines with the respective radiation source a gap and each reflector further comprises a rear wall behind that portion of the respective radiation source which faces away from said exit opening, said rear walls having inner sides configurated to reflect radiation issuing from said portions of the respective sources into said gaps.
Claim 10
Dependent Claim
33 words
Apparatus as defined in claim 1, further comprising a housing for said radiation sources, said housing having an exit opening for ultraviolet radiation and said sources being closely adjacent to said exit opening.
Claim 11
Dependent Claim
59 words
Apparatus as defined in claim 1, further comprising a housing for said radiation sources, said housing having an exit opening for ultraviolet radiation and said radiation sources being substantially horizontal, and further comprising a substantially plate-like support in said opening, said support consisting of a material which transmits radiation in the wavelength band between approximately 300 and 330 nm.
Claim 12
Dependent Claim
28 words
Apparatus as defined in claim 10, wherein said radiation sources form several groups and said support includes a plurality of sections, one for each group of radiation sources.
Claim 13
Dependent Claim
18 words
Apparatus as defined in claim 10, wherein said support is disposed at a level above said radiation sources.
Claim 14
Dependent Claim
78 words
Apparatus as defined in claim 1, wherein said radiation sources are substantially horizontal and further comprising a housing for said sources, said housing having an exit opening above said radiation sources and a substantially plate-like support in said exit opening, and further comprising a second housing disposed above said first mentioned housing and having an exit opening facing said support, and a battery of substantially horizontal parallel radiation sources in said second housing above the respective exit opening.
Claim 15
Dependent Claim
76 words
Apparatus as defined in claim 13, further including reflectors for said radiation sources, at least two reflectors for the radiation sources in said second housing being arranged to direct radiation issuing from the respective sources downwardly through the respective exit opening so that the rays issuing from radiation sources associated with said two reflectors converge toward each other to form a high-density radiation field in a predetermined plane below the exit opening of said second housing.
Claim 16
Dependent Claim
43 words
Apparatus as defined in claim 13, further comprising a third housing laterally adjacent to said first mentioned housings and having an exit opening facing the space between said first mentioned housings, and a plurality of parallel elongated radiation sources in said third housing.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-12-03 | 1983-06-04 | 1983-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-03 | 1987-06-04 | 1987-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-03 | 1991-06-04 | 1991-12-04 | $7700.00 | Window Closed / Lapsed |