专利名称：Method for the fabrication of plastic tubes
serving as drainage probes for wounds, inparticular tubes provided with anantithrombogenic skin, and plastic tubesobtained
发明人：BRAUN, BERND, DR.申请号：EP79104570.1申请日：19791119公开号：EP0011795A1公开日：19800611
专利附图：
摘要：Plastic tubes intended for use as drainage probes for wounds are prepared bytaking a plastic tube (1), provided with drainage holes (2) prepared by punching, andimmersing the tube in an organic solvent in order to remove the surface irregularities (3)
which occur during punching and which project into the lumen of the holes and of thetube and cause secretion obstructions and/or thrombocyte aggregations, leaving thetube in the solvent for a few minutes, and then taking the tube out and immediatelyremoving the solvent by drying. In this way, plastic tubes are obtained in which the edgesof the punched holes (2) are smooth and free from irregularities, such as fringes or tabs,so that the use of these plastic tubes as drainage probes for wounds does not lead toundesired secretion obstructions and/or thrombocyte aggregations impairing the healingof the wound. If the tubes produced in accordance with the described procedures are tobe additionally provided with an antithrombogenic skin, they undergo a subsequenttreatment with a 1% strength solution of polyethylene-acrylate or with a mixture oftetrahydrofuran and toluene, by which means there is formed on the surface of the tubesa thin layer with a negative charge, which repels the thrombocytes and their aggregates.
申请人：INTERMEDICAT GMBH
地址：Gerliswilstrasse 45 CH-6020 Emmenbrücke CH
国籍：CH
代理机构：von Kreisler, Alek, Dipl.-Chem.
更多信息请下载全文后查看
因篇幅问题不能全部显示，请点此查看更多更全内容