摘要:
The invention relates to a catheter system. The system comprises a catheter body having a chamber containing a low acoustic impedance medium. The catheter body includes an elongated body with an external surface and an ultrasound transducer having an external side between a first end and a second end. The ultrasound transducer is positioned over the external surface of the elongated body such that the first end is adjacent to the chamber.
摘要:
A backing block (10) for an ultrasonic array transducer comprises a flex circuit embedded in a body of acoustic backing material, with conductive traces on the flex circuit (20) terminating at the surface (12) of the body (10) at which an array transducer is mounted and extending out from the rear (14) of the body (10) for connection to electrical circuitry. The array transducer is formed of a composite material in which the pattern of the composite material is oriented at an oblique angle to the kerfs of the transducer.
摘要:
Ein Ultraschallwandler weist eine in einem Wandlergehäuse (2) angeordneten Piëzoscheibe (1) mit zwei Elektroden zum Abstrahlen und Empfangen von Ultraschallwellen auf. Der Ultraschall tritt durch eine Membran (14) hindurch in ein strömendes Medium (15). Die Membran (14) trennt die Piëzoscheibe (1) mit den Elektroden vom meist aggressiven Medium (15). Die Piëzoscheibe (1) ist mit einer flexiblen Leiterplatte (3) fest verbunden, die die Piëzoscheibe (1) in einer Ausnehmung (5) des Wandlergehäuses (2) reproduzierbar ausrichtet. Als Mittel zum Ausrichten weist die Leiterplatte (3) Laschen (11) und/oder Oesen auf.
摘要:
An integrated circuit (IC) apparatus includes a substrate having opposed first and second major sides and one or more edges defining an outer periphery of the substrate. The substrate may be a semiconductor material. The IC apparatus may further include one or more transducers situated on the first major side of the substrate; and an attenuation pattern formed in at least one of the second major side and one or more of the edges of the substrate.
摘要:
A catheter-based ultrasonic transducer array is provided which includes a piezoelectric member sandwiched between matching layers and a backing member. A flexible stiffening element or elements is embedded in the backing member. The element is opaque to radio frequencies and integrated along the azimuthal axis of the array so as to enable a user to view the element in an image of the array derived from the array output and thus determine the angular position of the array. A flexible interconnection assembly provides an electrical connection between the electrodes of the piezoelectric member and external cabling. Different methods are provided for adding a surrounding protective cover to the array.
摘要:
An ultrasonic probe comprising a piezoelectric element, a first electrode formed on a substantial portion of a first main face, a first side face and a part of a second main face of the piezoelectric element, and a second electrode formed on a substantial portion of a second main face, a second side face and a part of a first main face of the piezoelectric element, the two electrodes being isolated from each other by two grooves formed on the first and second main faces of the piezoelectric element, in a manner parallel to the side edges of the piezoelectric element, respectively, has good vibration and probing properties.