A DEVICE FOR INTRODUCING A CATHETER INTO A BLOOD-VESSEL

摘要

An introducer-cannula for introducing a catheter into a blood-vessel. The introducer-cannula (10) is arranged on the outside of a needle (13) and is introduced into the blood-vessel together with this. The introducer-cannula has a front end with a reduced or tapering diameter, said front end connects tightly to the needle. The front end is provided with an expandable, e.g. slotted portion (16), which can be severed by the tip to a catheter (18) having a diameter exceeding that of said front end and permit the passage of the catheter through the introducer-cannula (10) into the blood-vessel after removal of the needle (13). In connection to said expandable portion (16) there is preferably arranged a line of weakness (17) extending over the rest of the length of the introducer-cannula and along which the introducer-cannula can be severed for facilitating its withdrawal from the catheter (18) when this has been located in the blood-vessel.