Patent ID: 7833157

Claim:
A catheter for delivering fluids directly into a patient's body, the catheter comprising: a catheter body having a generally circular outer peripheral cross section; a first lumen in the catheter body; and a second lumen in the catheter body; wherein the first lumen is configured for communicating a fluid through the catheter, the first lumen having a site at which the fluid is able to enter or exit; the catheter further comprising at least a portion of a sensor lead extending in the second lumen, the sensor lead having a sensor capable of indicating a characteristic level in the patient's body, the second lumen having a size relative to the sensor lead that squeezes the sensor within the second lumen, the second lumen having an end that is adapted to be located in the patient's body when the first lumen is communicating the fluid to the patient's body, such that the sensor is able to extend past the site of the first lumen; wherein the second lumen has a generally oval shape; and wherein the first lumen has a cross sectional shape that has one edge facing the second lumen and having a curvature corresponding to that of the generally oval shaped second lumen, and the first lumen has a second edge facing the catheter body and having a curvature corresponding to that of the generally circular shaped catheter body.