Patent ID: 9737685
Date: 2017-08-22
CPC Classifications: A61M

Claim:
1. A fluid delivery mechanism, comprising: a substantially cylindrical catheter configured for containing a needle and for insertion into a patient's vein, wherein the catheter comprises a mesh layer comprising a plurality of pivot points coupling a plurality of links and the links are expandable and contractible at the pivot points; a cam coupled to the plurality of pivot points, wherein each of the plurality of pivot points are coupled to an arm and each arm is coupled to the cam; and dial indirectly coupled to the plurality of pivot points via the cam and configured to rotate about an axis perpendicular to a longitudinal axis of the catheter, such that when the dial is rotated the cam is configured to translate rotation about the perpendicular axis of the dial into a straight pushing or pulling force parallel to the longitudinal axis which acts upon each arm, to expand or contract the mesh layer for controlling a circumference of the catheter, the diameter of which is based upon a circumference of the patient's vein and the medication to be delivered to the patient's vein.