Patent ID: 8298173
Filing Date: 2012-10-30
Classification: A61M,Y10T

Abstract:
1. A method of producing a particle cassette for a needleless syringe device, said method comprising the steps of: (a) providing a first cassette part having a first rupturable membrane bonded thereto; (b) providing a second cassette part having a second rupturable membrane bonded thereto; (c) aligning said first and second parts longitudinally; (d) applying a predetermined force in the longitudinal direction so as to push the first and second cassette parts together to cause plastic deformation of a part of said cassette so as to create a hermetically sealed chamber between said first rupturable membrane and said second rupturable membrane, wherein said predetermined force applied in step (d) is chosen according to either of the following formulas: wherein F is the predetermined force in Newtons, C is the compressive yield strength of the portion that plastically deforms in MPa and A