Patent ID: 8382722
Filing Date: 2013-02-26
Classification: A61J,A61M,B21D,B21G,Y10T

Abstract:
1. A method of manufacturing a metal cannula comprising: providing a metal tube having a longitudinal axis and defining a fluid channel; pressing the metal tube closed along a straight line extending in an orthogonal direction in relation to the longitudinal axis of the metal tube at a specified location to substantially close the fluid channel and defining a first segment and a second segment; cutting the metal tube at the specified location to separate the first segment from the second segment of the metal tube and to create a cut blunt end surface extending orthogonal to the longitudinal axis, each of the first and second segments having a pressed face extending at an angle from the cut blunt end surface, the pressed face substantially sealing the fluid channel and forming two pressed corners; and cutting each of the pressed corners from the first segment to define a pair of side openings while preserving portions of the cut blunt end surface extending orthogonal to the longitudinal axis and the pressed face extending at the angle from the cut blunt end surface on the first segment, wherein the side openings are in fluid communication with the fluid channel to define the metal cannula.