Fluid delivery system, fluid path set, sterile connector and improved drip chamber and pressure isolation mechanism

US7611503B2 · kind B2 · utility

Assignee

• MEDRAD, Inc. · US

Inventors

• Michael A. Spohn · Butler, US
• John A. Haury · Dorpsstraat, US
• James A. Dedig · Pittsburgh, US
• Susan Lynn Felix · Pittsburgh, US
• Anthony S. McCoppin · Butler, US
• Michael J. Ehrenberger · Pittsburgh, US
• James M. Gimbel · Delmont, US
• Jared A. Sunday · Greensburg, US

Key dates

• Filing date: Apr 16, 2004
• Grant date: Nov 3, 2009
• Expiry date: Feb 8, 2025

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2205/583
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

The fluid path set is intended for use in a fluid delivery system. The fluid path set includes a multi-patient use section adapted for connection to a syringe used in the fluid delivery system, and to a source of fluid, such as contrast media, to be loaded into the syringe. The fluid path set further includes a per-patient use section that is removably connected to the multi-patient use section. A connector removably connects the multi-patient use section and the per-patient use section. A drip chamber is provided between the source of fluid and the syringe, and includes a projection for determining a level of fluid in the drip chamber. The per-patient use section includes a pressure isolation mechanism. The pressure isolation mechanism includes a lumen, a pressure isolation port, and a valve member with a biasing portion that biases the valve member to a normally open position.