Low profile catheter system
Inventors
Chelak, Todd • Kimball, Ian • Maseda, Luis • Gabel, Jonathan
Assignees
Interested in licensing this patent?
MTEC can help explore whether this patent might be available for licensing for your application.
Publication Number
US-12582805-B2
Publication Date
2026-03-24
Expiration Date
Abstract
A low profile catheter system includes a catheter hub with proximal, distal, and intermediate portions, a stabilization surface located on an underside, and a receptacle located within a top surface. A substantially linear flow path extends from an opening at the distal portion to an inlet located within the intermediate portion and allows fluid to flow between the distal and intermediate portions. The inlet of the flow path is located between the proximal and distal portions. A base connector has a fluid path extending through at least a portion of the base connector and between a first opening located nearer a first end and a second opening. The fluid path is fluidly connected to the inlet of the flow path and a second end of the base connector is retained within the receptacle by the proximal portion when the base connector is received by the receptacle.
Core Innovation
A low profile catheter system includes a monolithically formed catheter hub having a proximal portion, a receiving element at a proximal end, and a distal body with a first end and a second end. The catheter hub has a stabilization surface located on an underside and configured to stabilize the catheter hub on a patient, and a substantially linear flow path extending from an opening within the first end of the distal body to an inlet located within the second end of the distal body, with the inlet located between the proximal portion and the distal body.
A base connector includes a fluid path extending through at least a portion of the base connector and between a first opening nearer a first end and a second opening. The base connector fluid path is fluidly connected to the inlet of the flow path in the catheter hub, and the proximal end of the base connector contacts the receiving element so that the receiving element retains the base connector within the receptacle of the catheter hub when the base connector is received by the receptacle.
The system further includes a fluid seal interface around the inlet, and in some embodiments biasing members and sealing elements configured to engage the fluid seal interface. A valve mechanism, including a two-way pressure activated valve, may be included to prevent retrograde blood flow. Additional features described include optional sensor recesses, a dressing or patch securement, and extension set constructions that can include film based fluid pathways.
Claims Coverage
The independent claim defines the low profile catheter system architecture with two inventive features: the monolithically formed catheter hub and the base connector retained by the receiving element. Dependent claims further add flow-control and sealing features, sensor and patient interface/support features, and securement and access structures.
Monolithically formed catheter hub with underside stabilization and substantially linear flow path
A monolithically formed catheter hub having a proximal portion, a receiving element at a proximal end, a distal body with a first end and a second end, an underside stabilization surface configured to stabilize the catheter hub on a patient, a receptacle located within a top surface, and a substantially linear flow path extending from an opening within the first end of the distal body to an inlet located within the second end, where the inlet is located between the proximal portion and the distal body.
Base connector fluid path fluidly connected to hub inlet and retained within the hub receptacle
A base connector having a fluid path extending through at least a portion of the base connector between a first opening nearer a first end and a second opening, where the fluid path is fluidly connected to the inlet of the flow path in the catheter hub, and where a proximal end of the base connector contacts the receiving element so the receiving element retains the base connector within the receptacle when the base connector is received by the receptacle.
Pressure-activated valve mechanism for controlling fluid flow through the base connector fluid path
A pressure activated valve mechanism in the base connector that controls fluid flow through the fluid path.
Axially biased sealing member engaging a fluid seal interface at the inlet
A fluid seal interface around the inlet of the flow path and a first opening of the fluid flow path, with an axially biased biasing element driving the first opening against the fluid seal interface, and where a base connector includes a sealing member that seals at the first opening against the fluid seal interface when axially biased toward it.
Sensor recesses in a base connector bottom surface
Recesses in a bottom surface of the base connector configured to hold one or more sensors.
Adhesive layer on the stabilization surface
An adhesive layer on the stabilization surface that secures the catheter hub to the patient.
Patient-skin access slot extending through the catheter hub
At least one slot extending through the catheter hub to provide access to the patient's skin.
The coverage centers on a monolithically formed catheter hub with an underside stabilization surface and a substantially linear internal flow path, combined with a retained base connector whose fluid path connects to the hub inlet. Dependent claims add pressure-activated valve-based flow control, axially biased sealing engagement at a fluid seal interface, optional sensor-receiving recesses, adhesive securement to the patient, and a slot providing access to the patient’s skin.
Stated Advantages
Easier connect/disconnect without rotation.
Reduced snag hazards.
Improved patient comfort.
Documented Applications
No documented applications found
Interested in licensing this patent?