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    Anti-microbial coatings having indicator properties and wound dressings
    91.
    发明专利
    Anti-microbial coatings having indicator properties and wound dressings 未知

    公开(公告)号：ZA981557B

    公开(公告)日：1998-09-03

    申请号：ZA981557

    申请日：1998-02-25

    Applicant: WESTAIM TECHNOLOGIES INC

    Inventor： BURRELL ROBERT EDWARD ,  PRECHT RODERICK JOHN

    IPC: A01N59/16 ,  A61F13/00 ,  A61L15/46 ,  A61L17/00 ,  A61L29/16 ,  A61L31/16 ,  C23C ,  A61F

    Abstract: Multilayer anti-microbial materials formed to produce an interference colour, and thus an indictor of anti-microbial effect, are provided. The materials include a partly reflective base layer and a partly reflective, partly transmissive top layer balanced to produce an interference colour. The top layer is formed from an anti-microbial metal with atomic disorder. Dissolution or a change in composition of the top layer on contacting an alcohol or electrolyte causes a change in optical path length so as to produce a change in the interference colour of the material. Multilayer, laminated wound dressings are also provided. The dressing includes a first and second layer, and preferably a third layer. The first and third layers are formed of perforated, non-adherent materials and most preferably carry an anti-microbial coating as above. The second layer is sandwiched between the first and third layers and is formed of an absorbent material. At least one of the layers is formed from a plastic material. The layers are laminated together by ultrasonic welds spaced intermittently on the dressing to allow the dressing to be cut to size with delaminating.

    96.
    发明专利
    未知

    公开(公告)号：DE69313632D1

    公开(公告)日：1997-10-09

    申请号：DE69313632

    申请日：1993-05-06

    Applicant: WESTAIM TECHNOLOGIES INC

    Inventor： WU XINGWEI ,  STILES JAMES ,  FOO KEN ,  BAILEY PHILLIP

    IPC: H05B33/10 ,  H05B33/12 ,  H05B33/22 ,  H05B33/26 ,  H05B33/28

    Abstract: An electroluminescent laminate is provided that comprises: a planar phosphor layer (22); a front and a rear planar electrode (14,24) on either side of the phosphor layer; a planar dielectric layer, which is preferably composed of a thick layer (18) and a thin layer (20), between the rear electrode and the phosphor layer, the dielectric layer being formed from sintered ceramic material such that the dielectric layer provides a dielectric strength S which is greater than about 1.0 X 106 V/m and a dielectric constant such that the ratio of the dielectric constant of the dielectric layer to that of the phosphor layer is greater than about 50:1, the dielectric layer having a thickness sufficient to prevent dielectric breakdown during operation as determined by the equation d2 = V/S, wherein d2 is the thickness of the dielectric layer and V is the maximum applied voltage, the dielectric layer forming a surface adjacent the phosphor layer which is sufficiently smooth that the phosphor layer illuminates generally uniformly at a given excitation voltage, and wherein the dielectric layer is either in contact with the phosphor layer or spaced apart from it by at least one additional layer that is itself in contact with the phosphor layer and wherein the layer that is in contact with the phosphor layer is compatible with the phosphor layer.

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