Compact catheter insertion apparatus

本发明涉及用于给表层血管插管的插管装置，其具有受到保护的针尖端，且迁移状态下的长度缩短(见图31)。在迁移状态下，针及导管单元位于手柄内。使用者将针及导管单元移动至准备工作状态，在该状态下，针单元与手柄末端啮合，且导管插座朝向末端伸出手柄。在将导管插入病人的皮肤内后，使用者使针单元与手柄分离，从而在一弹性件的作用下，针单元缩回至保护状态。启动件与移动件的位置使得能够用一只手来控制该装置。在保护状态下，固定装置避免针单元再次移出。可使用橡胶或螺旋弹簧件，以及具有可折叠的侧翼与侧孔的导管插座。 Invention relates to catheter placement devices for peripheral blood vessel catheterization with protected needle tip and shortened length in a transport position (see FIG. 31 ). In the transport position (FIG. 9 ), the needle and catheter units ( 1 and 5 ) are held inside the handle ( 8 ). User transposes the needle and catheter units into a duty ready position ( FIG. 6 ), wherein the needle unit is engaged with the handle distal end and a catheter hub ( 7 ) protrudes distally out of the handle. After catheter insertion into patient vein, user disconnects the needle unit and handle allowing the needle unit retraction by a resilient member ( 11 ) into the protection position. The trigger and transposing means ( 22 ) location enables the apparatus single handed control. The fixation means ( 31 ) in the protection position eliminates repeated needle unit advance. It can be used rubber or spiral spring resilient members and the catheter hubs with foldable side wings and side port.