Ultrasonic probe having ultrasonic propagation medium

• US 4,901,729 A
• Filed: 03/10/1988
• Issued: 02/20/1990
• Est. Priority Date: 03/10/1987
• Status: Expired due to Term

• Current Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Original Assignee: Matsushita Electric Industrial Company Limited (Panasonic Holdings Corporation)
• Inventors: Kawabuchi, Masami, Saitoh, Koetsu
• Primary Examiner(s): Jaworski, Francis
• Application Number:
  US07/166,339
• Time in Patent Office: 712 Days
• Field of Search: 128/662.03, 128/663.01, 128/661.01, 73/644, 310/328, 310/334-336, 310/340
• US Class Current: 600/459
• CPC Class Codes: A61B 8/4281 characterised by sound-transmitting media or devices for coupling the transducer to the tissue
• CPC Class Codes: G10K 11/02 Mechanical acoustic impedances; Impedance matching, e.g. by horns; Acoustic resonators

Abstract

An ultrasonic probe having an ultrasonic propagation medium (8) is used in medical ultrasonic diagnostic systems for examination and inspection of inside of an examining body (9) by transmitting and receiving ultrasonic signals. The ultrasonic probe comprises a body (1), and the ultrasonic propagation medium (8) made of rubber cross-linked by cross linking agent. The ultrasonic propagation medium (8) is interposed between the examining body (9) and a portion for transmitting and receiving ultrasonic waves of the body (1) of the ultrasonic probe when the ultrasonic propagation medium (8) is used.

Claims

1. An ultrasonic probe assembly comprising:

(a) a body of an ultrasonic probe having means for transmitting and receiving ultrasonic waves; and

(b) an ultrasonic propagation medium attached to said means for transmitting and receiving, made of rubber containing a cross-linking agent, an amount of a main component of said cross-linking agent being less than 0.8 parts by weight, for 100 parts of said rubber.

2. An ultrasonic probe assembly as claimed in claim 1, wherein said rubber is at least one of natural rubber, isoprene rubber, butadiene-styrene rubber, ethylene-propylene rubber, and butadiene rubber.

4. An ultrasonic probe assembly as claimed in claim 1, wherein said ultrasonic propagation medium is detachably connected to said body of said ultrasonic probe.

5. An ultrasonic probe assembly as claimed in claim 1, wherein a contact surface of said ultrasonic propagation medium is larger than a surface of said means for transmitting and receiving ultrasonic waves of said body of said ultrasonic probe, said in contact surface being contact with said surface of said portion.

3. An ultrasonic assembly as claimed in calim 1, wherein said cross linking agent is at least one of dicumyl peroxide, benzoyl peroxide, 1,4 (or 1,3)-bis (t-butylperoxy isopropyl) benzene, 2,5-dimethyl-2,5-di (t-butylperoxy) hexane, 1,1,-bis-t-butylperoxy-3,3,5-trimethyl cyclohexane, n-butyl-4,4-bis (t-butylperoxy) valerate, and t-butylperoxy isopropylcarbonate.