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US 9,844,646 B2Granted
Needle tip shielding device and fixing arrangement
AssigneeVigmed AB
InventorPer Knutsson
Life of this patent
Estimating the term…
Abstract
A closed IV catheter system, includes a needle shield assembly positioned proximally of a catheter hub and distally of the needle hub. The needle shield assembly cooperates with the catheter hub on the outer circumferential and peripheral surface of the catheter hub. The needle shield adds additional length and width to the closed IV catheter system. An improved manufacturing process with unique materials is also presented.
Claims20
An IV catheter system comprising:
- a catheter hub, said catheter hub comprising:
- a tubular catheter attached at a proximal end to a catheter hub body;
- a catheter hub cavity in fluid communication with a lumen of the tubular catheter;
- a tube in fluid communication with the catheter hub cavity, said tube extending laterally from the catheter hub body;
- a septum, proximal of the catheter hub cavity;
- and
- an end cavity, proximal of the septum;
- a needle hub, said needle hub comprising:
- a needle extending distally from a needle hub body, a distal end zone of said needle having a bulge;
- and
- a needle shield, said needle shield comprising:
- at least one resilient arm extending distally from a base plate, said base plate having a through hole for receiving the needle therethrough;
- wherein the needle hub is arranged in the catheter hub, such that the needle is slidingly arranged through said septum and in the lumen of said catheter, such that the needle may be withdrawn proximally from the catheter hub;
- wherein the needle shield is arranged to be entirely housed in the end cavity in a retained manner through direct interaction between the needle shield and an inner wall of the catheter hub body in said end cavity, and onto the needle, such that the at least one arm rests upon and is spring loaded by the needle, and the needle is slidingly arranged within the through hole of the base plate, in an assembled state;
- and
- wherein the bulge interacts with the base plate when the needle hub is withdrawn from the catheter hub to release the needle shield from the catheter hub and with the at least one arm covering a tip of the needle while the septum provides a seal, thereby forming a closed system in a released state.
13 more elements
A catheter hub for an IV catheter system, said catheter hub comprising:
- a tubular catheter attached at a proximal end to a catheter hub body;
- a catheter hub cavity in fluid communication with a lumen of the tubular catheter;
- a tube in fluid communication with the catheter hub cavity, said tube extending laterally from the catheter hub body;
- a septum, proximal of the catheter hub cavity;
- an end cavity, proximal of the septum;
- a needle hub with a needle having a bulge;
- and
- a needle shield with at least one resilient arm extending distally from a base plate having a through hole,
- wherein the needle shield is arranged to be entirely housed in the end cavity in a retained manner through direct interaction between the needle shield and an inner wall of the catheter hub body in said end cavity, and onto the needle, such that the at least one arm rests upon and is spring loaded by the needle, and the needle is slidingly arranged within the through hole of the base plate, in an assembled state, and
- wherein the bulge interacts with the base plate when the needle hub is withdrawn from the catheter hub to release the needle shield from the catheter hub and with the at least one arm covering a tip of the needle while the septum provides a seal, thereby forming a closed system in a released state.
7 more elements
Dependencies are inferred from the claim text.