Patent ID: 7441472

Claim:
A method of gathering a fluid sample remotely using a liquid sample device wherein the liquid sample device further comprises a shaft comprising a first tube having an inside surface, a second tube having an outside surface, an eccentric cam pivotally supported by the second tube and adjacent the inside surface, a retaining bracket attached to the outside surface, a piston and chamber arrangement further comprising a piston and a chamber, wherein the chamber has a cylindrical body removably attached to the retaining bracket, and a remote control member adjacent the first tube and the second tube and connected to the piston; the method comprising the steps of: axially rotating the second tube to frictionally disengage the eccentric cam from the inside surface; axially moving the second tube with respect to the first tube to alter the length of the shaft; axially rotating the second tube to frictionally reengage the eccentric cam against the inside surface; extending the piston and chamber arrangement into a body of fluid; drawing a fluid sample into the piston and chamber arrangement by moving the remote control member in a proximal direction; removing the shaft and piston and chamber arrangement from the body of fluid; and removing the piston and chamber arrangement from the retaining bracket.