Login| Sign Up| Help| Contact|

Patent Searching and Data


Title:
NEEDLE-LIKE ULTRASONIC PROBE
Document Type and Number:
Japanese Patent JP3654309
Kind Code:
B2
Abstract:

PURPOSE: To improve signal strength by matching the position of a focus where ultrasonic waves transmitted and received from an ultrasonic converter are gathered inside an acoustic propagation medium by the action of an acoustic lens with the position of the boundary of a viable tissue and the acoustic propagation medium in the range of a focal depth.
CONSTITUTION: The ultrasonic waves transmitted from the vibrator 4 of the ultrasonic converter are propagated inside a substrate 3, then converged by the acoustic lens 2 and made incident on the viable tissue 50 and the ultrasonic waves reflected from the viable tissue 50 are received by the vibrator 4. The ultrasonic converter is mounted to the internal needle 10 of this needle-like ultrasonic probe and the scanning of the ultrasonic converter to the surrounding viable tissues 50 is realized by operating the internal needle 10. The liquid acoustic propagation medium 40 supplied by an acoustic propagation medium inlet/outlet tube 30 is interposed between the acoustic lens 2 and the viable tissue 50, the inlet/outlet device of the acoustic propagation medium 40 is attached on the opposite end of the acoustic propagation medium inlet/outlet tube 30 and the position of the boundary of the viable tissue 50 and the liquid acoustic propagation medium 40 is finely adjusted and matched with the position of the focus of the acoustic lens 2 by changing a hydrostatic pressure.


More Like This:
JP6307219Lung biopsy
JP4266611Ultrasonic probe, ultrasonic endoscope, and ultrasonic diagnostic equipment
JP6132963Cable connection structure, an ultrasound probe, and an ultrasound endoscopy system
Inventors:
Koichi Yokozawa
Ishikawa Izuo
Ryuichi Shinomura
Yukio Ito
Shuzo Sano
Hiroshi Kanda
Application Number:
JP16196095A
Publication Date:
June 02, 2005
Filing Date:
June 28, 1995
Export Citation:
Click for automatic bibliography generation   Help
Assignee:
Hitachi Medical Co., Ltd.
International Classes:
A61B8/12; (IPC1-7): A61B8/12
Domestic Patent References:
JP3045249A
JP2107238A
JP60098356A
JP59047863U
Attorney, Agent or Firm:
Akita Haruki



 
Previous Patent: INCOMBUSTIBLE MOLDING

Next Patent: AIR CONDITIONER FOR VEHICLE