公开(公告)号：JPH0643242A

公开(公告)日：1994-02-18

申请号：JP29900991

申请日：1991-11-14

Applicant: ADVANCED TECH LAB

Inventor： KITSUPU ROBAATO NERUSON ,  HAWAADO FUIDERU ,  JIYOZEFU DEI EINDOU

IPC: A61B8/14 ,  A61B8/08 ,  A61B17/00 ,  A61B17/34 ,  A61B19/00 ,  B06B1/06 ,  G01S15/89

Abstract: PURPOSE: To grasp the inserted state of a clinical instrument in a body, e.g. a needle for biological test being used by a physician, and the position of a target visually by disregarding the arrangement of the instrument through ultrasonic imaging and an acoustic indicator. CONSTITUTION: A needle 10 for examining a biological tissue having an ultrasonic receiver 22 at the tip thereof pierces a skin 15 and enters into a body, in order to detect an ultrasonic wave radiated from an ultrasonic imaging probe 14. The needle 10 generates a control signal variable as a function of the unit quantity of receiving energy and modulates an audible indicator. Consequently, the situation where a clinical instrument approaches and traverses an image plane can be indicated as an audible sound using a speaker 90. Furthermore, a visual marker is generated, as an image display which is indicative of the position of the instrument in the body on an ultrasonic imaging system 16. When the instrument traverses the plane, the visual marker is modulated, and a physician can visually recognized the situation.