Blood exposure prevention in vascular access devices

US7806869B2 · kind B2 · utility

Inventors

• Anders Nilsson · Västerås, SE
• Jorgen Hager · Helsingborg, SE
• Kristoffer Glowacki · Staffanstorp, SE
• Karl Johan Mårten Söderholm · Helsingborg, SE
• Johan Fredrik Thörne · Helsingborg, SE

Key dates

• Filing date: Mar 29, 2007
• Grant date: Oct 5, 2010
• Expiry date: Jan 26, 2028

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61M2039/068
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An extravascular system includes a catheter assembly, a needle assembly, and a hemostatic adapter. The catheter assembly defines a lumen extending from a distal end thereof to a catheter hub at a proximal end thereof. The needle assembly includes a needle hub disposed at a proximal end of a needle disposed within the lumen defined by the catheter assembly. The hemostatic adapter defines a passage and is adapted to be operatively associated with the needle assembly and the catheter assembly. The hemostatic adapter-further includes at least one liquid-reactive material adapted to at least substantially seal the passage. The liquid-reactive material is selected and configured to morph upon contact with liquids to provide a mechanical barrier to prevent blood flow. A fluid may be injected into the lumen and/or passage by way of an optional port to provide a fluidic barrier in addition to the mechanical barrier.