Jetless intravenous catheters and mechanical assist devices for hand-injection of contrast media during dynamic tomography and methods of use

US9884166B2 · kind B2 · utility

Assignee

• Duke University · US

Inventors

• Laurens E. Howle · Mebane, US
• Rendon Nelson · Chapel Hill, US
• Eli B. Nichols · Durham, US
• Sebastian T. Schindera · Basel, CH
• Courtney Coursey · Atlanta, US
• Paul Weber · Old Town, US

Key dates

• Filing date: Jan 21, 2011
• Grant date: Feb 6, 2018
• Expiry date: Sep 19, 2033

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2206/20
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

A jetless intravenous catheter for the delivery of a fluid into a peripheral vein of a subject includes an elongated body having proximal and distal ends. The body includes a wall defining an internal fluid passageway configured to receive fluid flowing in a longitudinal direction from the proximal end at a first axial velocity and a tip aperture at the distal end configured to allow fluid to exit therethrough. The body comprises at least one flow reducing feature configured to create a laminar-turbulent transitional flow associated with a fluid flowing in the longitudinal direction at the first axial velocity and configured to reduce the flow velocity of fluid exiting the tip to a second axial velocity that is less than the first axial velocity.