US 9,713,573 B2 · Blunt tip vial access cannula and method for manufacture

Abstract

A method of manufacturing a metal cannula is disclosed. The method includes the step of providing a metal cannula having a longitudinal axis and defining a fluid channel. Next, the metal cannula is pressed to substantially close the fluid channel and define a first segment and a second segment. In a next step, the metal cannula is cut to separate the first segment from the second segment of the metal cannula. Each of the first and second segments have a pressed edge. The pressed edge substantially seals the fluid channel and has two pressed corners. Afterwards, each of the pressed corners are cut from the pressed edge of the first segment to define a pair of side openings and a distal blunt edge on the first segment. The side openings are in fluid communication with the fluid channel.

Claims22

Dependent claims

A method of manufacturing a metal connula, comprising the steps of:

providing a metal cannula having a fluid channel defined therein and defining a central longitudinal axis therethrough;
cutting a u-shaped notch defining a first segment and a second segment, each of the first and second segments having opposed distal tips;
cutting the opposed distal tips of the first segment and the second segment in an acute angle in relation to the central longitudinal axis of the metal cannula forming respective first and second planar faces that face the central longitudinal axis;
arranging the opposed distal tips of the first and second segments in a crimping device;
and
crimping the first and second segments to form a blunt metal tip, the blunt metal tip having a substantially closed distal end and defining a pair of side openings.

3 more elements

Dependencies are inferred from the claim text.

Blunt tip vial access cannula and method for manufacture

Life of this patent

Blunt tip vial access cannula and method for manufacture

Life of this patent

Abstract

Claims22