West Pharmaceutical Services, Inc.

The Tech Group, Inc.

Todd E Kuhn

Jon Tyler Lundquist

Paul Roussel

Matthew J Zelkovich

John Baker

Jon Lunquist

A collet mechanism that holds a cannula during molding of a syringe includes first and second arms that form an internal cavity. Each arm has a proximal end and a distal end. The first and second arms are in a closed position when the distal ends are moved toward the internal cavity and are in an open position when the distal ends are positioned away from the internal cavity. First and second cannula guides respectively are mounted proximate the distal ends of the first and second arms and extend into the internal cavity. The first and second cannula guides clamp a portion of the cannula to hold the cannula when the first and second arms are in the closed position.

Collet mechanism and method of molding cannula to a syringe barrel

A two-shot injection mold employs a cam pin/slide actuation to open and close the mold, and is configured to leave the mold closed after the first shot and to open it only after the second shot, employing open-topped cam slide channels and two different cam pin configurations to effect the operation.

Cam pin/slide actuation for two-shot injection mold

Growing community of inventors

Scottsdale, AZ, United States of America

Todd E Kuhn