Micro Therapeutics, Inc.

Covidien LP

Ed Olsen

Douglas Ray Hayman

Brian M Strauss

Noah M Roth

Thomas J Whalen

Amanda Conner

Brock H Smith

Brian Canfield

Gary Curri

Tom Whalen, Ii

Douglas R Hayman

Amanda M Conner

A threaded syringe provides a mechanism by which a clinician can deliver a viscous fluid through a relatively small lumen and can obtain tactile or audible feedback of delivery. The threaded syringe allows for delivery of more viscous fluids with less force and/or allows for more controlled delivery. The syringe includes a syringe barrel and a sliding member positioned on the proximal end of the syringe barrel. The sliding member has a first threaded hole and a second hole. The sliding member is slidable on the syringe barrel between a first position at which the first threaded hole is aligned with the syringe barrel for precise delivery of a material from the syringe and a second position at which the second hole is aligned with the syringe barrel for filling of the syringe or to stop bleed out.

Threaded syringe with quick stop

An interface needle is used for connecting a syringe to a catheter to create a blunt interface between two or more liquids being delivered through the catheter. The interface needle is particularly useful for creating a blunt interface between a biocompatible solvent and a liquid embolic composition which is delivered to the body for treatment of various conditions including aneurysms. A system for liquid delivery with a blunt liquid interface includes a catheter or other cannula, an interface needle, and a syringe. The interface needle includes a tube extending from a distal end which delivers liquid to a lumen of the catheter bypassing a reservoir in the catheter hub to create the blunt liquid interface. One embodiment of the interface needle controls an injection pressure of high viscosity liquids.

Interface needle and method for creating a blunt interface between delivered liquids

Growing community of inventors

Lake Forest, CA, United States of America

Ed Olsen