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5497540 |
Method for fabricating high density ultrasound array
A high yield method of fabricating an ultrasound array having densely packed ultrasound elements with smooth surface finishes includes the steps of: 1) applying an acoustic matching material to...
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5494038 |
Apparatus for ultrasound testing
The need for a highly viscous couplant gel or water spray to form an acoustical couple for ultrasound testing is eliminated by employing an ultrasound probe module. A porous membrane and an...
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5492121 |
Method for reducing sidelobes of limited diffracton pulse-echo images
An acoustic transducer produces a limited diffraction beam during the transmit portion of a pulse-echo sequence that has sidelobes extending away from the beam axis in defined sectors. During the...
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5488956 |
Ultrasonic transducer array with a reduced number of transducer elements
An ultrasonic transducer array in which distances between the array's transducer elements (T ij ) increase in the direction of the rows (x direction) and in the direction of the columns (y...
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5488955 |
Magnetostriction transducer and an intraoperative probe for acoustic imaging
This invention is a magnetostriction transducer and an intraoperative probe for acoustic imaging. The magnetostriction transducer has a coil and a magnetostriction element deposited on a portion of...
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5488954 |
Ultrasonic transducer and method for using same
An improved ultrasonic transducer fabricated on a silicon base has a piezoelectric layer of polyvinylidene fluoride-trfluroethylene copolymer. The piezoelectric layer is sandwiched between two...
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5482047 |
Intraoperative ultrasound probe
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...
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5479930 |
Ultrasonic transesophageal probe with articulation control for the imaging and diagnosis of multiple scan planes
A multiplane TEE probe is provided for the imaging and diagnosis of multiple scan planes from within a cavity of the body. The probe includes an articulation section formed of a plurality of...
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5479929 |
Drive system with a multiturn rotary stop
A drive system with a rotary stop for driving a rotatable load is provided having a motor, a rotary stop and a spring stop assembly for coupling the motor to the rotary stop. The spring stop...
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5474074 |
Low profile transducer for intravascular ultrasound imaging and method for mounting
An ultrasonic transducer includes a transducer element having a backing element bonded thereto. The thickness of the backing element is selected to be less than or equal to half the length of an...
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5465725 |
Ultrasonic probe
A tunable ultrasonic probe of the that provides efficient electrical coupling of probe control lines to imaging system components and further provides for variable control over size of an effective...
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5460181 |
Ultrasonic transducer for three dimensional imaging
A method and apparatus for three dimensional ultrasonic scanning with reduced electronic switching and cabling requirements. The invention includes a body including a relaxor ferroelectric ceramic...
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5456256 |
High resolution ultrasonic imaging apparatus and method
An ultrasonic imaging system and method for imaging human or animal tissue having a surface and including a probe including a platen for supporting the human or animal tissue for imaging the same,...
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5456259 |
Ultrasonic transducer arrangement and catheter
A catheter (1a, 1b) is provided with an ultrasonic transducer array at its tip (3), the transducer array having been manufactured from an annulus of piezoelectric material (10) by making...
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5447509 |
Ultrasound catheter system having modulated output with feedback control
A method and apparatus for driving an ultrasound transducer coupled to an ultrasound transmission disposed within an elongate catheter has a modulated output and utilizes feedback control. A...
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5445154 |
Ultrasonic probe assembly with linear actuator
An ultrasonic probe assembly in which the disposition of the scan plane of an ultrasonic transducer is achieved using a linear actuator. The scan plane is selected by operation of a remote control...
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5438999 |
Ultrasonic transducer
An ultrasonic transducer which can produce an ultrasonic image having a high resolution and a high detection depth, including a piezoelectric element having a concave surface on a side where...
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5438554 |
Tunable acoustic resonator for clinical ultrasonic transducers
A tunable ultrasonic probe includes a body of a first piezoelectric material acoustically coupled in series with a body of a second piezoelectric material. The second piezoelectric material has a...
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5435313 |
Ultrasonic probe
This invention realizes an ultrasonic probe wherein wiring is substantially eliminated between piezoelectric vibrators and signal sending/receiving circuits in the probe. The ultrasonic probe...
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5434827 |
Matching layer for front acoustic impedance matching of clinical ultrasonic tranducers
An ultrasonic probe having one or more piezoelectric ceramic elements, each having a respective bulk acoustic impedance. Each element has a respective front face and a respective piezoelectric...
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5425002 |
Acoustic pressure pulse generator
An apparatus for generating acoustic pressure pulses in an acoustic medium has a membrane that can be driven which adjoins the acoustic medium and which is driven in an impact-producing manner. The...
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5421335 |
Intrinsically collimated ultrasonic transducer
An improved piezo-electric transducer to provide a maximal transmission of ultrasonic energy into and from human and animal tissues for the determination of abnormalities eliminating the necessity...
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5418759 |
Ultrasound transducer arrangement having an acoustic matching layer
In an ultrasound transducer arrangement having an electroacoustic transducer part, at least one acoustic matching layer is allocated to the transducer part. The acoustic matching layer is composed...
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5409446 |
Coupling device for introducing acoustic waves into the body of a life form
The invention is directed to a coupling device for introducing acoustic waves into the extremity of a life form, said coupling device comprising a rigid, hollow-cylindrical outside part as the...
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5405318 |
Ultra-sound catheter for removing obstructions from tubular anatomical structures such as blood vessels
An ultrasound catheter for removing obstructions from tubular anatomic structures such as blood vessels, said catheter comprising an elongate flexible catheter body having an ultrasound...
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5402791 |
Piezoelectric single crystal, ultrasonic probe, and array-type ultrasonic probe
Disclosed is a piezoelectric single crystal which has a large electromechanical coupling coefficient and hardly brings about depolarization due to the effect of heat in, e.g., the steps of...
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5400788 |
Apparatus that generates acoustic signals at discrete multiple frequencies and that couples acoustic signals into a cladded-core acoustic waveguide
Spherical annulus piezoelectric transducers 62, 64 and spherical disc piezoelectric transducer 66 form a spherical shell having a radius of curvature R with a focal point 70 near the end of...
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5398689 |
Ultrasonic probe assembly and cable therefor
An ultrasonic probe including a sensor head having an array of ultrasonic transducer elements is disclosed. The sensor head is located at the tip of a flexible shaft. The flexible shaft houses a...
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5394877 |
Ultrasound medical diagnostic device having a coupling medium providing self-adherence to a patient
A contact medium structure attachable to externally-applied medical diagnostic devices for providing self-adherence of the medical device to the skin of a patient thereby eliminating the need for...
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5396143 |
Elevation aperture control of an ultrasonic transducer
An ultrasonic transducer for controlling an elevation aperture utilizes the electric field-induced polarization properties of relaxor ferroelectric materials. The Curie temperature of the material...
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5392259 |
Micro-grooves for the design of wideband clinical ultrasonic transducers
An ultrasonic probe including one or more piezoelectric ceramic elements mounted on an acoustically damping support body. Desired acoustic signals are transmitted and received through a front...
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5390675 |
Transcranial doppler probe mounting assembly with external compression device/strap
A TCD probe mounting assembly is provided comprising a TCD probe mounted in a pedestal which has affixed to the base thereof an adhesive material for adhesively securing the pedestal to a patient's...
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5383466 |
Instrument having enhanced ultrasound visibility
A medical instrument is provided with enhanced ultrasonic visibility. The medical instrument includes an elongate probe or needle for insertion into a patient. Selected locations along the...
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5381794 |
Ultrasonic probe apparatus
An ultrasonic probe apparatus suitable for use in stress echocardiography testing is disclosed. This ultrasonic probe apparatus comprises, an ultrasonic probe provided with a phased array...
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5381385 |
Electrical interconnect for multilayer transducer elements of a two-dimensional transducer array
A multilayer two-dimensional array of ultrasonic transducer elements includes four via segments at the four corners of each transducer element. A first pair of diagonally opposed via segments...
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5379772 |
Flexible elongate device having forward looking ultrasonic imaging
A flexible elongate device comprising a flexible elongate member having proximal and distal extremities, means mounted on the distal extremity and having a cavity therein, a transducer disposed in...
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5371483 |
High intensity guided ultrasound source
An ultrasound source for transmitting ultrasound along a fiber or rod comprises a thin piezoelectric element having two closely spaced apart concave and convex surfaces and an acoustic intensifier...
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5371717 |
Microgrooves for apodization and focussing of wideband clinical ultrasonic transducers
An ultrasonic probe including one or more piezoelectric ceramic elements mounted on an acoustically damping support body. Desired acoustic signals are transmitted and received through a front...
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5363852 |
Flow monitor and vascular access system with continuously variable frequency control
An apparatus for use in flow monitoring and cannulation of blood vessels which includes vascular accessing capabilities. The apparatus includes a flux panel, an audio monitor, and a probe-needle...
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5355886 |
Prophylactic protector for echographic probes
Prophylactic protector for echographic probes comprised of two parts permanently joined by two points of permanent union of two diverging ears each joined by welding to a different lip of the...
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5351692 |
Laparoscopic ultrasonic probe
An ultrasonic probe has an elongate tubular member and an imaging ultrasonic transducer pivotally mounted proximate the distal end of the tubular member. Reciprocating pivotal motion of the...
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5351691 |
Endoscopic probe
An endoscopic probe suitable for use as a TEE-probe, comprising a flexible tube having at one end a probe head which is provided with a phased array type ultrasonic transducer comprising a number...
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5335662 |
Image pickup system comprising signal processing device which uses exclusive adaptor in probes different in image pickup system from each other
A plurality of probes having image pickup elements differing from each other in image pickup system from each other are used to display an image image-picked-up on a monitor, and a connector of the...
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5335663 |
Laparoscopic probes and probe sheaths useful in ultrasonic imaging applications
The invention relates to a medical ultrasonic imaging probe, such as may be used in laparoscopic surgery. A probe is provided having both forward viewing and side viewing ultrasonic capabilities....
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5329496 |
Two-dimensional array ultrasonic transducers
A piezoelectric transducer chip comprising a plurality of transducer elements arranged in a two-dimensional array is disclosed. At least one of the transducer elements is a multi-layer element...
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5327895 |
Ultrasonic probe and ultrasonic diagnosing system using ultrasonic probe
An ultrasonic diagnosing system includes a probe having an vibrator made of a plurality of spaced piezoelectric; material elements arranged in a matrix, first electrodes arranged on one surface of...
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5323781 |
Methods for the diagnosis and ablation treatment of ventricular tachycardia
A closed-heart method for treating ventricular tachycardia in a myocardial infarct patient afflicted with ventricular tachycardia is disclosed. The method comprises, first, defining a thin layer of...
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5320104 |
Transesophageal ultrasound probe
An endoscopic ultrasound probe for use in transesophageal echo cardiography comprises a rotatable ultrasound transducer array for obtaining two-dimensional cross-sectional images along a variety of...
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5318035 |
Crosslinked molding, sound medium using it and ultrasonic coupler
A crosslinked molding, a process for producing the same, a sound medium using the same, and an ultrasonic coupler using the same are disclosed. The crosslinked molding comprises a crosslinked...
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5313950 |
Ultrasonic probe
An ultrasonic probe for use in hollow organs such as blood vessels of a living body and in other hollow objects of structures such as pipes, includes a piezoelectric transducer, a reflector and a...
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