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US 9,427,549 B2Granted
Valved catheter assemblies and related methods
AssigneeB. Braun Melsungen AG
InventorsKevin Woehr, Edwin L. Burnard
Life of this patent
Estimating the term…
Abstract
Catheter assemblies are described having a catheter hub with a catheter tube and a needle hub with a needle projecting through the catheter tube. The catheter hub has a valve or a septum for stopping or slowing down the flow of fluid in or out of the catheter hub when the valve or septum is closed. The valve has features formed thereon to facilitate venting, opening, closing, or combinations thereof.
Claims21
An intravenous (IV) catheter assembly comprising:
- a catheter hub comprising an interior cavity having a shoulder, a perimeter defining an opening at a proximal end, and a catheter tube having a distal end opening extending distally of the catheter hub;
- 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 located distally of the distal end opening in a ready to use position;
- a valve sized and shaped to obstruct fluid flow comprising a unitarily formed valve body comprising a thickness and a valve perimeter;
- said valve positioned inside the interior cavity of the catheter hub;
- said valve comprising a void having a void perimeter located inwardly of the valve perimeter and the void perimeter having a three-sided wing configuration defining three wings with each wing having a wing bottom;
- a slit in each wing having a length and a cut through the wing bottom and the thickness of the valve body to define a plurality of flaps;
- and
- a valve opening device slidingly disposed in the catheter hub to actuate the valve, the valve opening device comprising a nose section with an opening structured to push the valve to open the slits and at least one plunger element extending proximally of the nose section and slidable distally when a male implement projects into the opening of the catheter hub to transfer a distally directed force to the nose section to push the valve to open the slits.
5 more elements
An intravenous (IV) catheter assembly comprising:
- a catheter hub comprising an interior wall surface defining an interior cavity, an opening at a proximal end, and a catheter tube extending from a distal end;
- a valve sized and shaped to obstruct fluid flow positioned inside the interior cavity of the catheter hub and in contact with the interior wall surface, said valve comprising a unitarily formed valve body comprising a valve perimeter surrounding a wall surface comprising a thickness, a void with three-sided wings with each wing comprising a slit and each slit comprising a length and a cut through the thickness of the wall surface and substantially along the length of each slit to define a plurality of flaps;
- the void comprises a void perimeter inwardly positioned relative to the valve perimeter and formed through only part of the thickness of the wail surface, wherein three tapered surfaces extend from the void perimeter inwardly toward each slit of each wing;
- and
- 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 hub, the valve and the catheter tube and a needle tip of the needle projecting distally of an end of the catheter tube in a ready to use position.
2 more elements
Dependencies are inferred from the claim text.