| 摘要 |
<p>A needle for introducing a catheter is splittable so that it can be removed after the catheter has been inserted. The needle 1 has two longitudinally extending notches on opposite sides thereof which allow the needle to be split into halves. The already pre-split ends of the needle are inserted into a sleeve 2 which can also be split into two longitudinal halves by means of grooves 3, 4. The splitting process is initiated by moving two fins 8 projecting radially from each half of the sleeve towards one other. After a partial splitting of the sleeve along the groove 3 one or more projections 9 on the fins meet and continued movement of the fins towards one another causes the sleeve to split along groove 4. The sleeve, and the needle with it, can thus be split using two fingers of one hand and in a single movement. <IMAGE></p> |
