PLASMA STERILIZATION AND DRYING SYSTEM AND METHODS

    公开(公告)号:US20200316239A1

    公开(公告)日:2020-10-08

    申请号:US15733310

    申请日:2018-12-26

    IPC分类号: A61L2/14 A61L2/26 H01J37/32

    摘要: A system and methods for sterilizing and drying contaminated articles, particularly medical articles, and more particularly the hollow internal areas of medical instruments or lumens of medical endoscopes. The system includes a plasma generator having an electrode, a shield, and a dielectric gap between the electrode and the shield. A source of electrical power connected to the plasma generator applies an electrode energy density between the electrode and the shield. A source of a sterilizing gas precursor provides a flow of the sterilizing gas precursor through the plasma generator to generate a plasma, thereby forming a sterilizing gas including acidic and/or oxidizing species. The contaminated article is exposed to the sterilizing gas for a time sufficient to achieve a desired degree of sterilization. A turbulent flow of a drying gas is used to dry the contaminated article alternately with the exposure of the contaminated article to the sterilizing gas.

    ANTIMICROBIAL COMPOSITIONS AND ARTICLES AND RELATED METHODS

    公开(公告)号:US20240114905A1

    公开(公告)日:2024-04-11

    申请号:US18274779

    申请日:2022-01-28

    IPC分类号: A01N37/44 A01N25/10 A01P1/00

    CPC分类号: A01N37/44 A01N25/10 A01P1/00

    摘要: The composition includes an antimicrobial monomer represented by formula CH2═C(R1)—C(O)—O-Q-N+(R)2CnH2n+1(X—), a non-fluorinated crosslinking monomer having at least two acrylate groups, methacrylate groups, or a combination thereof, a polar monomer having at least one of acrylic acid, methacrylic acid, or a carboxylate salt thereof, and a nonpolar monomer represented by formula CH2═C(R1)—C(O)—O—R2. The antimicrobial monomer, the non-fluorinated crosslinking monomer, the polar monomer, and the nonpolar monomer together account for greater than 95 percent by weight, based on the total weight of the composition. The article includes a film having a plurality of pendent groups represented by formula —C(O)—O-Q-N+(R)2CnH2n+1(X—) covalently bonded in a crosslinked non-fluorinated acrylic network. A method of making an article is also described.