公开(公告)号：EP0276977A3

公开(公告)日：1988-09-14

申请号：EP88300622

申请日：1988-01-26

Applicant: CARDIOVASCULAR DEVICES, INC.

Inventor： Maxwell, Thomas P.

IPC: A61B05/00

CPC classification number: A61B5/6852 ,  A61B5/02158 ,  A61B5/1459

Abstract: A parameter of blood is sensed in vivo with a system which includes a catheter (53) and a probe (55). The catheter has a lumen (61) extending therethrough, a proximal end (57), a distal end (59) an opening (63) at the distal end. The probe includes one or more sensors (69) (71) (73) at its distal end. A saline solution is introduced into the lumen (61) so that there is an interface (113) adjacent the distal opening of the catheter between the blood and saline solution. The probe is received within the catheter and affixed thereto. The interface (113) is moved back and forth in the lumen to expose the sensor to blood so that they can sense the blood parameters of interest.