Intracavity probe with continuous shielding of acoustic window
First Claim
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1. An ultrasound probe equipped with a mechanically oscillating transducer which is shielded from electromagnetic and radio frequency interference emissions comprising:
- an ultrasonic transducer located in a fluid chamber containing fluid;
a movable mechanism on which the transducer is mounted for scanning of the transducer;
an acoustic window enclosing the fluid chamber through which ultrasonic energy is transmitted or received; and
a shielding conductive layer directly lining the acoustic window which provides electromagnetic and radio frequency shielding of both the fluid chamber and the transducer on the movable mechanism within the fluid chamber and which is further coupled to a reference potential,wherein the fluid is directly located between the transducer on the movable mechanism and the shielding conductive layer.
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Abstract
An ultrasound probe has a transducer array which is moved to scan a patient with ultrasonic energy. The array is located in a fluid chamber (42) which is enclosed by an acoustic window end cap (34). The acoustic window cap is coated with a thin conductive layer (38) which shields the transducer and its motive mechanism from EFI/RFI emissions. The conductive layer is coupled to a reference potential.
8 Citations
15 Claims
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1. An ultrasound probe equipped with a mechanically oscillating transducer which is shielded from electromagnetic and radio frequency interference emissions comprising:
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an ultrasonic transducer located in a fluid chamber containing fluid; a movable mechanism on which the transducer is mounted for scanning of the transducer; an acoustic window enclosing the fluid chamber through which ultrasonic energy is transmitted or received; and a shielding conductive layer directly lining the acoustic window which provides electromagnetic and radio frequency shielding of both the fluid chamber and the transducer on the movable mechanism within the fluid chamber and which is further coupled to a reference potential, wherein the fluid is directly located between the transducer on the movable mechanism and the shielding conductive layer. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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Specification