Patent US2676524A successfully refreshed from Google Patents.
Patent EP0069037B1 successfully refreshed from Google Patents.
EP0069037B1
Expired / Lapsed
EP
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Sterilization indicator
Assignee: Individual
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Filing: 1982-06-11
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Granted: 1986-05-07
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Expires: 2002-06-11
Abstract
Abstract 1. Indicator of sterilization conducted in the presence of pressurized steam of the type comprising a support-plate (1) of which at least one of the faces contains one or more spots (2) of a reagent changing color in relation to the temperature, pressure, steam concentration and dwelling time in a sterilizer, and further comprising, a screen (3) constituted by a transparent film which is impervious to the liquids resulting from the sterilization operation and which entirely covers the said spots of reagent, characterized in that said transparent screen (3) is constituted by a complex film composed of a sheet of polypropylene or polyurethane on the inside and of a sheet of polyester or of polyamide on the outside, which film is bonded by melting, in discontinuous and leaky manner, to said support-plate, so that the steam can infiltrate between said screen and said support-plate.
Inventors
- 👤 Guy Charvin
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 10:39
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/02; C12Q1/22; A; A61; A61L; A61L2/00; A61L2/26; A61L2/28; G; G01; G01N; G01N31/00; G01N31/22; G01N31/226
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
143 words
Indicator of sterilization conducted in the presence of pressurized steam of the type comprising a support-ptate (1) of which at least one of the faces contains one or more spots (2) of a reagent changing color in relation to the temperature, pressure, steam concentration and dwelling time in a sterilizer, and further comprising, a screen (3) constituted by a transparent film which is impervious to the liquids resulting from the sterilization operation and which entirely covers the said spots of reagent, characterized in that said transparent screen (3) is constituted by a complex film composed of a sheet of polypropylene or polyurethane on the inside and of a sheet of polyester or of polyamide on the outside, which film is bonded by melting, in discontinuous and leaky manner, to said support-plate, so that the steam can infiltrate between said screen and said support-plate.
Claim 2
Dependent Claim
143 words
Indicator of sterilization conducted in the presence of pressurized steam of the type comprising a support-ptate (1) of which at least one of the faces contains one or more spots (2) of a reagent changing color in relation to the temperature, pressure, steam concentration and dwelling time in a sterilizer, and further comprising, a screen (3) constituted by a transparent film which is impervious to the liquids resulting from the sterilization operation and which entirely covers the said spots of reagent, characterized in that said transparent screen (3) is constituted by a complex film composed of a sheet of polypropylene or polyurethane on the inside and of a sheet of polyester or of polyamide on the outside, which film is bonded by melting, in discontinuous and leaky manner, to said support-plate, so that the steam can infiltrate between said screen and said support-plate.
Claim 3
Dependent Claim
53 words
Sterilization indicator according to claim 1, in which said support-plate is a rectangular strip (1), characterized in that said screen also has the shape of a rectangular strip (3) superposed on the face of said plate containing the said spots of reagent and secured to said face by two of its opposite edges.
Claim 4
Dependent Claim
37 words
Sterilization indicator according to claim 2, characterized in that said transparent strip (3) has the same dimensions as said support-plate and is fixed to the small sides of the support-plate by its two small sides (3a, 3b).
Claim 5
Dependent Claim
34 words
Sterilization indicator according to any one of claims 1 to 3, characterized in that said support-plate and/or said transparent screen are grooved or ribbed at least on the surface containing said sports of reagent.
Claim 6
Dependent Claim
23 words
Sterilization indicator according to any one of claims 1 to 4, characterized in that said support-plate is constituted by very thin corrugated cardboard.
Claim 7
Dependent Claim
44 words
Sterilization indicator according to any one of claims 1 to 5, characterized in that said transparent screen is constituted by a heat-sealed plastic film comprising alveoli which adopt the outline of said spots, and channels connecting said alveoli with the atmosphere of the sterilizer.
Claim 8
Dependent Claim
64 words
Sterilization indicator according to any one of claims 1 to 6, characterized in that said transparent screen is bonded to said support-plate in discontinuous manner so that imperviousness to steam is at least equal to 100 g of steam per square metre and per 24 hours, said imperviousness being measured at a temperature of 38 °C, in an atmosphere with 90 % relative humidity.
References Cited (Backward Citations)
No citation records indexed.
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