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US 12,109,374 B2Granted
Intravenous therapy system for blood vessel access via a curved needle and curved catheter
AssigneeBecton, Dickinson and Company
InventorsS. Ray Isaacson, Marc Weimer, Andrew C. Farinella, Jonathan Karl Burkholz
Life of this patent
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Abstract
An intravenous therapy system may include a curved needle; and a curved catheter formed around the outside surface of the curved needle; wherein, upon insertion of a first length of the curved needle and curved catheter into a patient's body, a curvature angle of the curved needle and curved catheter causes the curved needle and curved catheter to intersect axially with a blood vessel in the patient's body.
Claims20
An intravenous therapy system, comprising:
- a hub section, comprising a top and a bottom opposite the top, wherein the bottom is configured to be proximate skin of a patient when the intravenous therapy system is inserted into a blood vessel, wherein the top of the hub section comprises a tab extending in an upward direction;
- a curved needle comprising a curve having a distal end of the curve spaced apart from a proximal end of the curve, wherein the proximal end of the curve is proximate a straight proximal end of the curved needle, wherein the curve is between 5 and 15 degrees with respect to the straight proximal end of the curved needle, wherein the curve is curved towards the upward direction;
- and
- a curved catheter, wherein the curved needle extends through the curved catheter;
- wherein, in response to insertion of a first length of the curved needle and a first length of the curved catheter into a patient's body, a curvature angle of the curved needle and the curved catheter causes the curved needle and the curved catheter to intersect axially with a blood vessel in the patient's body, wherein the curvature angle of the needle and the catheter is between 5 and 15 degrees.
2 more elements
A method of manufacturing an intravenous device, comprising:
- introducing a heated metal at an extrusion die, wherein the extrusion die comprises an internal spider die, wherein the internal spider die comprises a central shaft and a funnel portion, the central shaft defining an interior diameter of a hollow tube and the funnel portion defining an outer diameter of the hollow tube;
- adjusting an exit plane of the internal spider die to be non-orthogonal to an extrusion axis of the spider die, wherein the central shaft and the funnel portion form the exit plane having a high side and a low side such that the exit plane is non-orthogonal to the extrusion axis aligned with the central shaft;
- extruding the heated metal through the extrusion die forming the hollow tube therefrom, wherein when the heated metal is extruded through the extrusion die, the hollow tube that is formed curves away from the low side towards the high side to form a curve in the hollow tube, wherein the curve in the hollow tube is between 5 and 15 degrees;
- and
- forming a catheter over the hollow tube to form a curved catheter on the hollow tube, wherein a curvature angle of the catheter is between 5 and 15 degrees.
2 more elements
A method of manufacturing an intravenous device, comprising:
- introducing a heated metal at an extrusion die, wherein the extrusion die comprises an internal spider die, wherein the internal spider die comprises a central shaft and a funnel portion, the central shaft defining an interior diameter of a hollow tube and the funnel portion defining an outer diameter of the hollow tube;
- extruding the heated metal through the extrusion die forming the hollow tube therefrom, wherein the central shaft and the funnel portion form an exit plane that is orthogonal to an extrusion axis aligned with the central shaft, wherein when the heated metal is extruded through the extrusion die, the hollow tube that is formed is straight;
- forming a plastic catheter around an outside of the hollow tube such that the plastic catheter is coaxial with the hollow tube that is straight;
- and
- with a bend fixture, bending the hollow tube and the plastic catheter to form a curve in the hollow tube and the plastic catheter, wherein the curve in the hollow tube and the plastic catheter is between 5 and 15 degrees.
2 more elements
Dependencies are inferred from the claim text.