Patent ID: 6159164
Filing Date: 2000-12-12
Classification: A61B

Abstract:
A system for sampling a body fluid through a tube attached to a patient's body, the system being operable by a user having a hand including a palm, a thumb and at least a first finger and a second finger, the system comprising:a fluid sampling site connected to the tube;means for receiving the tube;means for forming a chamber; andmeans for selectively increasing the size of the chamber to a maximum volume and for decreasing the size of the chamber to a minimum volume, the means for increasing and decreasing the size of the chamber being operable by moving the first and second fingers or the thumb in a flexion movement toward the palm to achieve the maximum volume of the chamber, the means for increasing and decreasing the size of the chamber also being operable by moving the first and second fingers or the thumb in a flexion movement toward the palm to achieve the minimum volume of the chamber such that the same motion of the user's first and second fingers can selectively accomplish the maximum volume to aspirate fluid from the patient's body to the fluid sampling site or accomplish the minimum volume to expel the fluid into the patient's body.