Matches 101 - 133 out of 133 < 1 2 3
Match Document Document Title
5360007 Ultrasonic apparatus  
An ultrasonic apparatus for transmitting ultrasonic waves and receiving reflection waves from an examination subject for display is used in a blood vessel with a catheter for two-dimensional...
5348017 Drive shaft for an intravascular catheter system  
The present invention provides an improved drive shaft for use in a catheter system having a rotating imaging or interventional work element. A drive shaft according to the present invention is...
5291893 Endo-luminal ultrasonic instrument and method for its use  
An endo-luminal ultrasonic instrument has a motor with a rotatable drive shaft that oscillates back and forth. A flexible catheter sheath is coupled at one end to the motor to oscillate with the...
5284148 Intracavity ultrasound diagnostic probe using fiber acoustic waveguides  
An intracavity ultrasound diagnostic probe has a fiber acoustic waveguide that guides acoustic signals generated by a piezoelectric transducer located outside the body, through a body cavity and to...
5273045 Ultrasonic equipment and its catheter-type ultrasonic probe  
An Ultrasonic Equipment and its Catheter-type Ultrasonic Probe can be inserted in capillaries such as blood vessels, and comprises a catheter-type ultrasonic probe for generating ultrasonic waves...
5257629 Methods and apparatus for the examination and treatment of internal organs  
The internal examination of a human organ is made by means of an ultrasonic probe inserted into the organ, and in one embodiment analogue echo signals from the probe are directly converted into...
5249580 Method for ultrasound imaging  
An ultrasound imaging method for invasive imaging, in particular for imaging blood vessels including the coronary vessels. A sheath is comprised of three lumens; one serves as an ultrasound probe...
5240003 Ultrasonic instrument with a micro motor having stator coils on a flexible circuit board  
The disposable intra-luminal ultrasonic instrument for the examination and/or treatment of blood vessels and similar lumina has a small transverse cross-section. The instrument includes a catheter...
5240004 Intravascular, ultrasonic imaging catheters and methods for making same  
Novel intravascular, ultrasonic imaging catheters are provided which utilize thin layers of a flexible plastic material, such as PVDF, which can be spot polarized in active regions which are to...
5240437 Torqueable guide wire assembly with electrical functions, male and female connectors for use therewith and system and apparatus for utilizing the same  
A guide wire assembly comprising a guide wire with first and second conductors which extend along the length thereof. The guide wire also comprises a flexible cable having first and second...
5226847 Apparatus and method for acquiring imaging signals with reduced number of interconnect wires  
Apparatus for echo mode imaging of a blood vessel is disclosed having a plurality of transducers that transmit a substantially unfocused omni-directional signal in at least one plane towards the...
5217018 Acoustic transmission through cladded core waveguide  
An Ultrasonic Catheter Guidance System which overcomes the inadequacies, dangers, and difficulties encountered by previously available medical guiding apparatus is disclosed. The present invention...
5203337 Coronary artery imaging system  
A coronary artery imaging system is described in which a catheter is provided with a forward looking sonic transducer for measuring fluid flow in arteries without disturbing the flow and a...
5201315 Ultrasound imaging sheath  
An ultrasound imaging sheath for invasive imaging, in particular for imaging blood vessels including the coronary vessels. The sheath is comprised of three lumens; one serves as an ultrasound probe...
5193546 Coronary intravascular ultrasound imaging method and apparatus  
An image catheter is introduced into the venous system and is maneuvered through the venous system to points adjacent to sections of arteries to be imaged. The arterial segments are then imaged...
5190046 Ultrasound imaging balloon catheter  
An ultrasound imaging balloon catheter for imaging near a wall of a cavity or passageway. The apparatus includes an elongated catheter having a primary lumen with a distal opening enveloped by the...
5186177 Method and apparatus for applying synthetic aperture focusing techniques to a catheter based system for high frequency ultrasound imaging of small vessels  
A catheter based ultrasound imaging system is disclosed which is capable of providing images of coronary vessels at frequencies near 50 MHz. The catheter based system implements a Synthetic...
5176141 Disposable intra-luminal ultrasonic instrument  
The disposable intra-luminal ultrasonic instrument for the examination and/or treatment of blood vessels and similar lumina has a small transverse cross-section. The instrument includes a catheter...
5174296 Ultrasonic probe having a piezoelectrical element  
An ultrasonic probe includes a housing, and a plurality of piezoelectric elements radially arranged in a plane substantially perpendicular to a direction in which the ultrasonic probe is inserted...
5167234 Ultrasonic probe having rotary refracting member  
An ultrasonic probe includes a housing, a piezoelectric element provided in the housing, the piezoelectric element emitting an ultrasonic beam, and a refracting member rotatably provided in the...
5156157 Catheter-mounted doppler ultrasound transducer and signal processor  
A Doppler ultrasound transducer and interconnected high frequency signal processing circuit, adapted for operative coupling on a distal portion of an intravascular catheter, for ultrasonically...
5139020 Method and apparatus for controlling the hemodynamic state of a patient based on systolic time interval measurements detecting using doppler ultrasound techniques  
A hemodynamic control apparatus and method for regulating blood flow within the cardiovascular system in a closed-loop control system using ultrasound measurement techniques and intracardiac...
5131397 Imaging system for producing ultrasonic images and insonifier for such systems  
An imaging system and an insonifier for detecting the position and orientation of devices adapted to produce intravascular ultrasonic images from a human body, especially from an artery. The system...
5125410 Integrated ultrasonic diagnosis device utilizing intra-blood-vessel probe  
An ultrasonic diagnosis device includes an ultrasonic oscillator, contained in a probe which can be inserted into a blood vessel, which can vary direction of transmission and reception of...
5115814 Intravascular ultrasonic imaging probe and methods of using same  
An intravascular ultrasonic imaging probe includes a transducer subassembly adapted to being rotated within a guide catheter via a drive cable. The guide catheter establishes a bearing surface for...
5095909 Ultrasound diagnostic equipment  
Ultrasound diagnostic equipment for diagnosing a region of interest of an organ by using a scattering coefficient and an attenuation slope comprises a scattering power calculation unit for...
5069679 Method and apparatus for removing venous valves  
An improved valvulectome (10) is adapted for use in selectively excising the leaflets of a venous valve. The apparatus includes an elongated probe (11) having one tip end portion (12) adapted to be...
5049130 System and method for pressure filling of catheters  
A vascular catheter includes an elongate catheter tube having proximal and distal ends as well as a lumen extending between said ends. A catheter housing secured to the distal end of the catheter...
5024234 Ultrasonic imaging catheter with guidewire channel  
Intravascular catheters including both a flexible catheter body and a less flexible housing mounted at a distal end of the catheter body are provided with a flexible distal tip, preferably having a...
4991588 Doppler guide wire  
A guide wire for an intravascular catheter is disclosed. In one embodiment, the guide wire has Doppler means positioned on the distal end, with preferred Doppler means being piezoelectric ceramics...
4869263 Device and method for measuring volumetric blood flow in a vessel  
Device for measuring volumetric blood flow in a vessel comprising a catheter having proximal and distal extremities. A balloon is carried by the distal extremity of the catheter. A balloon...
4697595 Ultrasonically marked cardiac catheters  
The hollow cylindrical wall of the catheter is composed of flexible, electrically insulating, ultrasonically transparent material. Embedded therein are spaced tubular-shaped ultrasonic...
4375818 Ultrasonic diagnosis system assembled into endoscope  
An ultrasonic diagnosis system includes an ultrasonic wave transmitting and receiving transducer which is rockably disposed within the distal end of a portion of an endoscope which is adapted to be...
Matches 101 - 133 out of 133 < 1 2 3