Low profile catheter system
Inventors
Chelak, Todd • Kimball, Ian • Maseda, Luis • Gabel, Jonathan
Assignees
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Publication Number
US-11565084-B2
Publication Date
2023-01-31
Expiration Date
Abstract
A low profile catheter system includes a catheter hub with a stabilization surface that is located on an underside of the catheter hub and stabilizes the catheter hub on a patient. A substantially linear flow path extends from an opening at the distal end of the catheter hub to an inlet located within an intermediate portion of the catheter hub. The flow path allows fluid to flow between the distal end and the intermediate portion. The intermediate portion receives a base connector having a fluid path. The fluid path has a first opening and is fluidly connected to the inlet of the flow path in the catheter hub and a biasing member biases the first opening toward the inlet when the base connector is received by the intermediate portion.
Core Innovation
The invention provides a low profile catheter system in which a catheter hub has an underside stabilization surface configured to stabilize the catheter hub on a patient. The catheter hub further includes a substantially linear flow path extending from an opening at a distal end to an inlet located within an intermediate portion of the catheter hub, and a fluid seal interface around the inlet. The inlet is positioned between a proximal end and the distal end, and the flow path is configured to allow fluid to flow between the distal end and the intermediate portion of the catheter hub.
A base connector is provided with a fluid path that extends through at least a portion of the base connector and between a first opening and a second opening. The catheter hub includes a receptacle located within the intermediate portion that receives the base connector such that the base connector, the first opening, the second opening, and the fluid path are located within the receptacle, and the fluid path is fluidly connected to the inlet of the flow path when the base connector is received. The first opening of the fluid path is biased toward the fluid seal interface, enabling a leak-tight fluid connection between the base connector fluid path and the catheter hub inlet.
The system is optionally refined with securing and stabilization features, including a sealing member and arrangements that support retention and stabilization on the patient, and optionally a valve mechanism for preventing retrograde flow. The system may also include an introducer with a needle and needle protection, optional sensor-containing recesses, and dressing or film-based fluid pathway components or tube-based extension sets for fluid transfer.
Claims Coverage
The document provides one independent claim that defines the core combination of a low profile catheter system: a catheter hub with an underside stabilization surface, a substantially linear internal flow path, and a fluid seal interface around an inlet, mated with a detachable base connector whose fluid path couples to the inlet through a biased first opening within a receptacle. The dependent claims further refine securing/stabilization, sealing behavior, fluid-path interfaces, and optional functional components such as valve, sensors, introducer/needle, and dressing-based fluid pathway structures.
Low profile catheter hub with underside stabilization and substantially linear flow path
A catheter hub having a proximal end, a distal end, a stabilization surface located on an underside of the catheter hub configured to stabilize the catheter hub on a patient, and a substantially linear flow path extending from an opening at the distal end to an inlet located within an intermediate portion, wherein the inlet is located between the proximal end and the distal end and the flow path allows fluid to flow between the distal end and the intermediate portion.
Fluid seal interface around the catheter hub inlet
A catheter hub having a fluid seal interface around the inlet of the flow path.
Detachable base connector with receptacle-mated fluid path
A base connector having a fluid path extending through at least a portion of the base connector and between a first opening and a second opening, wherein the receptacle within the intermediate portion of the catheter hub is configured to receive the base connector so that the base connector, the first opening, the second opening, and the fluid path are located within the receptacle and the fluid path is fluidly connected to the inlet of the flow path when the base connector is received.
Biased first opening toward the fluid seal interface
The first opening of the fluid path is biased toward the fluid seal interface.
Overall, the claim coverage centers on coupling a detachable base connector to a catheter hub inlet within an intermediate receptacle, using a biased first opening against a fluid seal interface, while providing an underside stabilization surface and a substantially linear internal flow path to enable fluid communication between the distal opening and the intermediate portion. Dependent claims narrow or add features for stabilization and sealing, fluid-path interface structures, and optional valve, sensor recesses, introducer/needle, and dressing-based fluid pathways.
Stated Advantages
Reduced cumbersome handling compared to prior ISO 80369-7 Luer-style connectors.
Reduced snag hazards compared to prior ISO 80369-7 Luer-style connectors.
Reduced rotation compared to prior ISO 80369-7 Luer-style connectors.
Allows the device to sit flat.
Improves comfort.
Documented Applications
Use in a low profile vascular catheter system employing the disclosed hub and base connector connection and optional components such as valve mechanism and sensor recesses.
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