Patent ID: 8485990

Claim:
A lancing system for blood extraction, comprising: a tubular body having a central longitudinal axis, a lancing end and a longitudinally opposite free end; a lancing mechanism coupled to the lancing end of the body, the lancing mechanism including a lancing shaft having a lance coupling end and an actuating end, the lancing shaft being slideably coupled along the longitudinal axis with the lancing end of the body; a main shaft slideably coupled with the body along the longitudinal axis, the main shaft having an actuating end disposed inside the body and a free end; a piston coupled to the main shaft and disposed within the body; a spring coupled to the piston so that the piston is biased toward the free end of the body; a release mechanism coupled to the body and configured to releasably hold the main shaft and piston away from the free end of the body against the bias of the spring; a shaft coupler having at least two separable portions that removably couple the lancing shaft to the main shaft, wherein a first portion is coupled to the actuating end of the lancing shaft and a second portion is coupled to the actuating end of the main shaft, the second portion being fixed relative to the main shaft; and a depth controller removably coupled to the lancing end of the body, the depth controller having a calibrated spacer with a top surface, a predetermined thickness and an opening adapted to allow at least a portion of a lance to pass there through.