摘要 |
The invention relates to a catheter insertion device comprising: an approximately hollow cylindrical catheter sleeve ( 2 ), at whose distal end a catheter ( 4 ) is attached; a needle sleeve ( 8 ) with a hollow needle ( 9 ), which is attached thereto and which, when ready for use, extends through the catheter sleeve ( 2 ) and the catheter ( 4 ), and; a needle protective element ( 13 ) that is arranged inside the catheter sleeve ( 2 ) while being able to move on the needle ( 9 ). Said needle protective element has an engaging section ( 13 c) that engages with an engaging device ( 9 b), which is formed in the vicinity of the needle tip, when the hollow needle is withdrawn from the catheter sleeve ( 2 ). A check valve ( 7, 17 ) is placed inside the catheter sleeve ( 2 ) between the catheter ( 4 ) and the needle protective element ( 13 ). The hollow needle ( 9 ), when ready for use, extends through said check valve, and the check valve automatically closes once the needle is withdrawn. |