摘要:
A method and apparatus are provided for enabling battery packs of different sizes to be used with an ultrasound device. The apparatus of the present invention comprises an ultrasound device having a battery pack installment apparatus configured to be capable of being coupled with battery packs of different sizes. The method comprises the step of providing the ultrasound device with a battery pack installment apparatus that is configured to couple with battery packs of different sizes.
摘要:
A two-dimensional phased array ultrasound transducer comprises a transducer housing, a sensor mounted within the housing, and a convex environmental barrier for placement against, and maximizing contact with, a patient's body. The environmental barrier does not necessarily provide any focusing capability, therefore the propagation velocity of sound through the environmental barrier is approximately equal to the propagation velocity of sound through tissue of the patient's body.
摘要:
There is provided a medical ultrasound transducer (130) and a medical ultrasound imaging system including the transducer (110, 130, 310, 320, 330, 340, 350), comprising an acoustic window (120) for contacting a patient at a patient contact surface for imaging the patient; and at least one temperature sensor (110, 110A, 110B) located in the acoustic window to determine patient contact temperature at the patient contact surface. The medical ultrasound imaging system further comprises a controller (310) for controlling a power imaging mode of the ultrasound transducer in accordance with the determined patient contact temperature. Also provided is a method for imaging a patient using the medical ultrasound imaging system, comprising contacting the patient contact surface of the acoustic window to the patient for imaging the patient; determining patient contact temperature of the ultrasound transducer at the patient contact surface from the at least one temperature sensor; and controlling a power imaging mode of the ultrasound transducer in accordance with the determined patient contact temperature.
摘要:
An ultrasound catheter including a flexible, torsionally-rigid elongate transducer cable having proximal and distal ends, with a transducer housing fixably connected proximate to the distal end. An ultrasound transducer, having a substantially planar surface and a scan plane substantially perpendicular to the planar surface, is fixably connected to a first side of the transducer housing to provide a predetermined two-dimensional cross-sectional image corresponding to an angular position of the ultrasound transducer. The transducer generates a series of successive two-dimensional cross-sectional images. In one embodiment, the ultrasound transducer is a linear array transducer which produces a substantially rectangular scan plane. A guide wire sleeve which is fixably connected to a second side of the housing substantially opposing the first side, causes the transducer to follow a predetermined rotational path around the guide wire when a torque is applied to the proximal end of the transducer cable. The guide wire sleeve is preferably configured to insure that the planar surface of the ultrasound transducer is maintained in substantial parallel relationship with the guide wire positioned within the sleeve. An ultrasound imaging system comprising the ultrasound catheter also includes a positioning system coupled to the proximal end of the transducer cable. The positioning system applies a torque to the proximal end of the cable to rotate the array about an axis defined by the guide wire channel. A controller rotates the array between successive image scans and forms a three-dimensional image using the plurality of two-dimensional cross-sectional images generated by the array.
摘要:
An endoscope ultrasound probe for use with an ultrasound imaging system in transesophageal echo cardiography comprises a motorized positioning system which provides for automated control of an ultrasound transducer array. The positioning system employs an electric motor for rotating the array which is positioned in the distal end of the probe. A switch mechanism may be manipulated to provide power to actuate the motor. The motor is mechanically coupled to the array providing the capability to rotate the array to any angular position to provide a plurality of scan planes for obtaining a plurality of corresponding two-dimensional cross-sectional images. Further, the positioning system may comprise a position feedback mechanism coupled to the array for providing remote imaging system electronics with array position indications corresponding to each of a plurality of corresponding two-dimensional cross-sectional images. Also, the positioning system may be electronically controlled by a controller in the imaging system for providing three-dimensional images of a subject.
摘要:
An ultrasound-imaging system and method is provided that permits an operator to acquire an image of a volume-of-interest in a time critical fashion, that is capable of referencing the volume rendering to a standard two-dimensional imaging mode, and permits the operator to selectively choose a number of display-mode parameters that result in an operator directed view of the volume-of-interest. The ultrasound-imaging system comprises an input device configured to receive a plurality of imaging parameters and a controller in communication with the input device. The ultrasound-imaging system generates an operator-directed transmit-beam scan sequence in response to the imaging parameters and transmits a spatially modified transmit-beam scan sequence over a portion of the volume-scan range of the ultrasound-imaging system. Moreover, the ultrasound-imaging system provides the flexibility for an operator to direct a plurality of operator-configurable multi-dimensional views.
摘要:
An ultrasound-imaging system and method is provided that permits an operator to acquire an image of a volume-of-interest in a time critical fashion, that is capable of referencing the volume rendering to a standard two-dimensional imaging mode, and permits the operator to selectively choose a number of display-mode parameters that result in an operator directed view of the volume-of-interest. The ultrasound-imaging system comprises an input device configured to receive a plurality of imaging parameters and a controller in communication with the input device. The ultrasound-imaging system generates an operator-directed transmit-beam scan sequence in response to the imaging parameters and transmits a spatially modified transmit-beam scan sequence over a portion of the volume-scan range of the ultrasound-imaging system. Moreover, the ultrasound-imaging system provides the flexibility for an operator to direct a plurality of operator-configurable multi-dimensional views.
摘要:
An acoustic backing element includes a glass fiber epoxy composite planar substrate to the outer major surfaces of which are applied electrically conductive material. The electrically conductive material may be a conductive layer that is etched to expose electrical contact material in the form of conductive traces. Each conductive trace provides electrical connection between a transducer element and electrical control circuitry typically located on an electrical circuit board. The acoustic backing element provides precisely located electrical contacts for connecting the transducer elements to their control circuitry, while simultaneously providing superior acoustic attenuation. In addition, the thermal coefficient of expansion (TCE) of the glass fiber epoxy composite material comprising the planar substrate can be closely matched to the TCE of the electrical contact material. In this manner, fatigue and failure caused by mechanical stresses between the planar substrate and the electrical contact material due to temperature extremes and temperature cycling are significantly reduced.
摘要:
An ultrasound-imaging system and method is provided that permits an operator to acquire an image of a volume-of-interest in a time critical fashion, that is capable of referencing the volume rendering to a standard two-dimensional imaging mode, and permits the operator to selectively choose a number of display-mode parameters that result in an operator directed view of the volume-of-interest. The ultrasound-imaging system comprises an input device configured to receive a plurality of imaging parameters and a controller in communication with the input device. The ultrasound-imaging system generates an operator-directed transmit-beam scan sequence in response to the imaging parameters and transmits a spatially modified transmit-beam scan sequence over a portion of the volume-scan range of the ultrasound-imaging system. Moreover, the ultrasound-imaging system provides the flexibility for an operator to direct a plurality of operator-configurable multi-dimensional views.
摘要:
An intravascular ultrasound catheter system is provided and enables a simplified, economical technique for ultrasound visualization of a blood vessel. The catheter may include a park ablation system for crossing chronic total occlusions and severe stenoses. The catheter is advanceable and is oriented entirely under manual control of the clinician and the application of radiofrequency energy for spark erosion of the stenosis also is controlled manually by the clinician. The system enables the clinician to observe an ultrasound image sufficiently to determine where to orient the ablation electrode so as to reduce the risk of dissection or perforation of the blood vessel. The ultrasound image is generated in response to manual rotation of the catheter and the ablation spark is generated only when the physician is satisfied as to the orientation of the electrode within the vessel.