Catheter insertion device
First Claim
1. A catheter insertion device comprising:
- a catheter hub comprising a body having an interior surface defining a bore having a groove on the interior surface;
said bore comprising an opening at a proximal end and a catheter tube attached at a distal end;
a valve located inside the bore of the catheter hub for blocking fluid flow therethrough and remaining inside the bore in a ready position and a needle guarded position;
a valve actuating element slidably disposed in the bore of the catheter hub;
said valve actuating element comprising a locating section and a plunger section extending from the locating section;
a needle having a needle shaft defining a needle axis projecting distally of an end of a needle hub, said needle projecting through the catheter tube and comprising a needle tip extending out a distal opening of the catheter tube;
a needle guard slidably mounted relative to the needle so that the needle tip is guarded by the needle guard when the needle tip is removed from the catheter hub; and
wherein the valve actuating element is guided in the groove of the bore and projects radially into the bore and said plunger section provides an abutting surface for a conical neck portion.
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Accused Products
Abstract
Embodiments of a catheter insertion device are discussed comprising: an approximately hollow cylindrical catheter sleeve, at whose distal end a catheter is attached; a needle sleeve with a hollow needle, which is attached thereto and which, when ready for use, extends through the catheter sleeve and the catheter, and; a needle protective element that is arranged inside the catheter sleeve while being able to move on the needle. Said needle protective element has an engaging section that engages with an engaging device, which is formed in the vicinity of the needle tip, when the hollow needle is withdrawn from the catheter sleeve. A check valve is placed inside the catheter sleeve between the catheter and the needle protective element. The hollow needle, when ready for use, extends through said check valve, and the check valve automatically closes once the needle is withdrawn.
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Citations
20 Claims
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1. A catheter insertion device comprising:
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a catheter hub comprising a body having an interior surface defining a bore having a groove on the interior surface;
said bore comprising an opening at a proximal end and a catheter tube attached at a distal end;a valve located inside the bore of the catheter hub for blocking fluid flow therethrough and remaining inside the bore in a ready position and a needle guarded position; a valve actuating element slidably disposed in the bore of the catheter hub;
said valve actuating element comprising a locating section and a plunger section extending from the locating section;a needle having a needle shaft defining a needle axis projecting distally of an end of a needle hub, said needle projecting through the catheter tube and comprising a needle tip extending out a distal opening of the catheter tube; a needle guard slidably mounted relative to the needle so that the needle tip is guarded by the needle guard when the needle tip is removed from the catheter hub; and wherein the valve actuating element is guided in the groove of the bore and projects radially into the bore and said plunger section provides an abutting surface for a conical neck portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for assembling a catheter insertion device comprising:
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forming a catheter hub comprising a body having an interior surface defining a bore having a groove on the interior surface;
said bore comprising an opening at a proximal end and a catheter tube attached at a distal end;positioning a valve inside the bore of the catheter hub for blocking fluid flow therethrough such that the valve remains inside the bore in a ready position and in a needle guarded position; positioning a valve actuating element slidingly in the bore of the catheter hub;
said valve actuating element comprising a locating section and a plunger section extending from the locating section;projecting a needle having a needle shaft defining a needle axis distally of an end of a needle hub and projecting through the catheter tube so that a needle tip of the needle extends out a distal opening of the catheter tube; mounting a needle guard slidingly relative to the needle so that the needle tip is guarded by the needle guard when the needle tip is removed from the catheter hub; and wherein the valve actuating element is guided in the groove of the bore and projects radially into the bore and said plunger section providing an abutting surface for a conical neck portion. - View Dependent Claims (10, 11, 12, 13)
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14. A catheter insertion device comprising:
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a catheter hub comprising a groove formed in a bore having an opening at a proximal end; a catheter tube having a distal end opening extending distally of the catheter hub; a needle having a needle shaft with a needle tip projecting distally of an end of a needle hub, said needle projecting through the catheter tube and the needle tip projecting distally of the distal end opening of the catheter tube; a valve positioned inside the bore of the catheter hub, said valve obstructing fluid flow and comprises a plurality of slits defining a plurality of flaps;
said valve remaining inside the bore of the catheter hub when the needle is removed from the catheter tube and the catheter hub;a valve actuating element slidingly disposed in the bore of the catheter hub to actuate the valve, the valve actuating element comprising a tapered nose section structured to push the valve to open the plurality of slits and two spaced apart plungers extending proximally of the nose section and each of the two spaced apart plungers are disposed in the groove; and a needle guard slidably mounted relative to the needle so that the needle tip is guarded by the needle guard when the needle tip is removed from the catheter hub. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification