Ultrasonic transducer - Patent Review 4862893

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Ultrasonic transducer

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United States Patent

4862893

Link to this page

http://www.wikipatents.com/4862893.html

Inventor(s)

Martinelli; Michael A. (Winchester, MA)

Abstract

A miniature transducer designed for use in a medical imaging system catheter probe is disclosed. The transducer has an electric cavity and coaxial construction for preventing electric fields from being emitted or received by the transducers. The construction of the transducer enables two to be mounted very close to one another on a thin catheter probe, one for transmitting acoustic pulses and the other for sensing echoes in response to the acoustic pulses, for imaging extremely close targets. The transducers can be secured to the catheter probe in such a way as to substantially acoustically isolate one from the other. A method of making the transducer by applying several electrically-conductive and insulating coatings and layers to a core in selected sequence so as to create a transducer having an electrical cavity, coaxial construction.

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Reference	Relevancy	Comments	Reference	Relevancy	Comments
3360665	Your vote accepted [0 after 0 votes]		3485088	Your vote accepted [0 after 0 votes]
4708127 Abdelghani 601/2 Nov,1987	Your vote accepted [0 after 0 votes]		4656870 Ruthrof 73/629 Apr,1987	Your vote accepted [0 after 0 votes]
4615330 Nagasaki 600/104 Oct,1986	Your vote accepted [0 after 0 votes]		4446395 Hadjicostis 310/327 May,1984	Your vote accepted [0 after 0 votes]
4424465 Ohigashi 310/335 Jan,1984	Your vote accepted [0 after 0 votes]		4365515 Abts 73/632 Dec,1982	Your vote accepted [0 after 0 votes]
3821834 McElroy 29/25.35 Jul,1974	Your vote accepted [0 after 0 votes]
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