Abstract: An intraoperative ultrasonic transducer probe is described comprising a handle section and a transducer section which resemble a tiny leg and foot. The two sections are obtusely angled relative to each other so that the physician may continue to clearly view the surgical site while holding and manipulating the probe. The extension of the transducer section away from its point of attachment to the handle section results in the toe of the foot being insertable under unincised tissue, enabling the surgeon to ultrasonically examine organs and tissue peripheral to the surgical site and to follow a vessel even beyond the incision. The transducer section is completely encapsulated in a rubberlike material which electrically insulates the transducer from the patient, enables the probe to be easily sterilized, and further provides an inherent standoff between the transducer and the contact surface of the probe.

Abstract: An intraoperative ultrasonic transducer probe is described comprising a handle section and a transducer section which resemble a tiny leg and foot. The two sections are obtusely angled relative to each other so that the physician may continue to clearly view the surgical site while holding and manipulating the probe. The extension of the transducer section away from its point of attachment to the handle section results in the toe of the foot being insertable under unincised tissue, enabling the surgeon to ultrasonically examine organs and tissue peripheral to the surgical site and to follow a vessel even beyond the incision. The transducer section is completely encapsulated in a rubberlike material which electrically insulates the transducer from the patient, enables the probe to be easily sterilized, and further provides an inherent standoff between the transducer and the contact surface of the probe.

Abstract: A transesophageal echocardiographic scanner includes a rotatable transducer for rotating the image plane of the scanner. The transducer is a circular shaped array of parallel oriented elements which may be operated as a phased or linear array. The transducer is mounted on a bell-shaped backing box with a conical interior surface that directs reverberations from the back of the transducer into damping material which fills the box. The transducer is located in a fluid compartment which is divided by a cover member into an ultrasonic transmission region between the emitting surface of the transducer and the cover, and an adjacent bubble trap region into which bubbles may pass and preferentially remain.

Abstract: A dynamically variable electronic delay line for real time ultrasonic imaging systems is disclosed which controllably phases the signals associated with an array of electromechanical transducer elements and thereby enables selective scanning and dynamic focusing of a target. A controllable variable electronic time delay apparatus is coupled to each of the electromechanical transducer elements of the array having separate write-in and read-out addressing capabilities. The signals associated with a respective ultrasonic transducer element are fed in at selected write-in addresses and subsequently read-out and extracted after an initial time delay interval. The write-in and read-out address pointers of the memory system are continuously sequenced during operation of the device and the time delay interval is a function of the difference between the addresses and the clock rate.

Abstract: A dynamically variable electronic delay line for real time ultrasonic imaging systems is disclosed which controllably phases the signals associated with an array of electromechanical transducer elements and thereby enables selective scanning and dynamic focusing of a target. A controllable variable electronic time delay apparatus is coupled to each of the electromechanical transducer elements of the array having separate write-in and read-out addressing capabilities. The signals associated with a respective ultrasonic transducer element are fed in at selected write-in addresses and subsequently read-out and extracted after an initial time delay interval. The write-in and read-out address pointers of the memory system are continuously sequenced during operation of the device and the time delay interval is a function of the difference between the addresses and the clock rate.

Abstract: A dynamically variable electronic delay line for real time ultrasonic imaging systems is disclosed so as to controllably phase the signals associated with an array of electro-mechanical transducer elements and thereby enable the selective scanning and dynamic focusing of a target. A controllable variable electronic time delay apparatus is coupled to each of the electromechanical transducer elements of the array and in one embodiment thereof constitutes an electronic memory having separate write-in and read-out addressing capabilities. The signals associated with a respective ultrasonic transducer element are fed in at selected write-in addresses and subsequently read-out and extracted after an initial time delay interval. The write-in and read-out address pointers of the memory are continuously sequenced during operation of the device and the time delay interval is a function of the difference between the addresses, as well as the clock rate.