Catheter insertion device
First Claim
1. A catheter insertion device comprisinga hollow catheter hub having a catheter tube attached at a distal end thereof,a needle hub having a hollow needle attached thereto and extending through the catheter hub and the catheter tube when in a ready position,a needle guard element arranged displaceably on the needle in the catheter hub and having an engaging section which engages with an engaging means formed near the needle tip when the hollow needle is removed from the catheter hub,wherein a check valve comprising a valve disc having radial slits starting from a middle section of the valve disc is disposed between the catheter tube and the needle guard element in the catheter hub through which the hollow needle extends in the ready position and which automatically closes after the removal of the needle, and wherein the check valve remains in the catheter hub when the hollow needle is removed from the catheter hub and the catheter tube;
- andwherein a valve actuating element is displaceably guided in the catheter hub and has a hollow space for receiving the needle guard element.
3 Assignments
0 Petitions
Accused Products
Abstract
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 (13c) that engages with an engaging device (9b), which is formed in the vicinity of the needle tip, when the hollow needle is withdrawn from the catheter sleeve (2).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(9), when ready for use, extends through said check valve, and the check valve automatically closes once the needle is withdrawn.
360 Citations
25 Claims
-
1. A catheter insertion device comprising
a hollow catheter hub having a catheter tube attached at a distal end thereof, a needle hub having a hollow needle attached thereto and extending through the catheter hub and the catheter tube when in a ready position, a needle guard element arranged displaceably on the needle in the catheter hub and having an engaging section which engages with an engaging means formed near the needle tip when the hollow needle is removed from the catheter hub, wherein a check valve comprising a valve disc having radial slits starting from a middle section of the valve disc is disposed between the catheter tube and the needle guard element in the catheter hub through which the hollow needle extends in the ready position and which automatically closes after the removal of the needle, and wherein the check valve remains in the catheter hub when the hollow needle is removed from the catheter hub and the catheter tube; - and
wherein a valve actuating element is displaceably guided in the catheter hub and has a hollow space for receiving the needle guard element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 20, 21)
- and
-
9. A catheter insertion device comprising:
-
a catheter tube attached to an end of a catheter hub, the catheter tube comprising a lumen and the catheter hub comprising an interior cavity; a needle defining a needle axis attached to an end of a needle hub, said needle projecting through the lumen of the catheter tube; a valve for regulating fluid flow positioned inside the interior cavity of the catheter hub and in mechanical communication with a movable valve actuating element for opening the valve, and wherein the valve remains inside the interior cavity of the catheter hub when the needle is removed from the catheter tube and the catheter hub; and a needle guard element comprising two needle guard arms crossing the needle axis of the needle positioned inside the catheter hub adjacent the valve in a ready position. - View Dependent Claims (11, 12, 13, 14, 22, 23)
-
-
10. A catheter insertion device comprising:
-
a catheter tube attached to an end of a catheter hub, the catheter tube comprising a lumen and the catheter hub comprising an interior cavity; a needle defining a needle axis attached to an end of a needle hub, said needle projecting through the lumen of the catheter tube and comprising an engaging section near a needle tip; a valve for regulating fluid flow positioned inside the interior cavity of the catheter hub, said valve comprising an opening and the needle projecting through the opening, and wherein the valve remains inside the interior cavity of the catheter hub when the needle is removed from the catheter tube and the catheter hub; a needle guard element comprising an opening adapted to contact the engaging section of the needle positioned between the valve and the needle hub; and wherein a valve actuating element is slidably displaced in the interior cavity of the catheter hub for opening the valve. - View Dependent Claims (15, 16, 17, 18, 19, 24, 25)
-
Specification