Patent
Ultrasonic position indicating apparatus and methods
David Vilkomerson,David Lyons +1 more
Reads0
Chats0
TLDR
In this paper, an ultrasonic imaging system employs a processing circuit which enables the imaging system to accurately display the location of an element in a body by utilizing a transducer, which provides an electric signal when an ultrasound wave impinges thereon.Abstract:
An ultrasonic imaging system employs a processing circuit which enables the imaging system to accurately display the location of an element in a body by utilizing a transducer which provides an electric signal when an ultrasonic wave impinges thereon. The electric signal is processed to determine the maximum amplitude signals during an entire frame of the ultrasonic imaging system. The signals are characterized in terms of the line at which the signal appears or the ray at which the signal appears and the pixel or location along that line. This information regarding ray and pixel serves as X-Y coordinates enabling one to accurately locate the element and transducer on the displayed image by intensifying the display at that location or by adding color or by producing some other visual effect such as blinking, and so on. Thus the disclosed apparatus in its various forms provides ultrasonic position indication without adjustment whereby one shows the exact location of the localizing transducer.read more
Citations
More filters
Patent
Navigation system for cardiac therapies
TL;DR: In this paper, an image guided catheter navigation system for navigating a region of a patient includes an imaging device, a tracking device, and a controller, as well as a display that displays the image of the region with the catheter superimposed onto the image at the current location.
Patent
Surgical apparatus with indicator
Thomas D. Guy,Robert H. Brady,James R. Pratt,Richard N Granger,John Webster,Corbett W. Stone +5 more
TL;DR: In this paper, an apparatus and system are disclosed for indicating relative positions of elements in a surgical apparatus, which can include electrical circuitry for activating visual, audible or tactile indicators, thereby alerting the user that an event has occured with respect to the instrument.
Patent
Apparatus and method for treating cardiac arrhythmias.
TL;DR: In this article, a method and apparatus for treating cardiac arrhythmias comprising an instrument for mapping ventricular tachycardia, is disclosed, which comprises obtaining a perspective image of the organ or structure to be mapped, advancing one or more catheters having distal tips to sites adjacent to or within the organ and structure, sensing the location of each catheter's distal tip using a non-ionizing field, processing the sensed information to create one or multiple data points, superimposing the data points on the perspective image, and ablating a portion of the
PatentDOI
A method for carrying out a medical procedure using a three-dimensional tracking and imaging system
TL;DR: In this article, a 3D tracking and imaging system is used to carry out a medical procedure using a catheter, probe, sensor, pacemaker lead, needle, or the like, and the position of the surgical instrument is tracked as it moves through a medium in a bodily structure.
Patent
Method and apparatus for surgical navigation
TL;DR: In this article, a non-invasive dynamic reference frame and/or fiducial marker, sensor tipped instruments, and isolator circuits are used for navigating a region of a patient.
References
More filters
Patent
Ultrasonically marked cardiac catheters
Branko Breyer,Ivo Cikes +1 more
TL;DR: In this paper, the authors describe a catheter with a hollow cylindrical wall composed of flexible, electrically insulating, ultrasonically transparent material. Embedded therein are spaced tubular-shaped ultrasonic piezoelectric transducers which substantially surround the lumen.
Patent
Ultrasound needle tip localization system
TL;DR: In this article, a B-scan pulse echo ultrasound system produces a real-time image of a body area under inquiry, and an aspiration needle is inserted directly into that area.
PatentDOI
Ultrasound tissue probe localization system
TL;DR: In this paper, a pulse-echo ultrasound imaging system consisting of at least three transducers is described, and the relative location of the probe with respect to the scan area is readily determined and indicated.
Patent
Annular ultrasonic transducers employing curved surfaces useful in catheter localization
TL;DR: In this paper, the response of an ultrasonic transducer for use in locating devices with a broad range of angles of incident acoustic beams, such as those emitted in ultrasonic systems, has a curved surface, and is an annular member in shape.
Patent
Image analysis method
James O. Gouge,Thomas Gettys +1 more
TL;DR: In this article, the mix of reflection coefficients in pixel windows is measured by determining the range and distribution of pixel gray scale values to establish "echoic texture" characteristics, which are compared with corresponding characteristics of known tissues.