| 摘要 |
An improved medication infusion set is provided of the type having a soft cannula for subcutaneous delivery of a selected medication to a patient. The infusion set comprises a cannula housing having a soft cannula protruding therefrom and a self-sealing septum mounted at an upstream end of the cannula. The cannula housing is initially assembled with an insertion hub having an elongated insertion needle extending through the septum and cannula for transcutaneously placing the cannula followed by separation of the insertion hub from the cannula housing. An infusion hub is then assembled with the cannula housing and includes a short infusion needle for coupling the cannula with the selected medication supplied from a source via a length of infusion tubing. The infusion hub includes a protective shroud plate protruding beyond a tip end of the infusion needle to minimize risk of patient contact therewith, and adapted for slide-fit reception into a matingly shaped slot formed in the cannula housing to insure a one-way and high strength interconnection between the cannula housing and infusion hub. Releasible latch members interlock the infusion hub with the cannula housing in a manner permitting periodic separation when desired. |
