Quistgaard
Jens U. Quistgaard, Seattle, WA US
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20080200813 | COMPONENT ULTRASOUND TRANSDUCER - An ultrasound transducer having multiple focal zones is described. In one embodiment there is an ultrasound transducer manufactured as a single piece but having two or more focal zones. In a second embodiment there is a transducer assembly combining a high frequency and low frequency transducer. In a third embodiment there is an interchangeable assembly allowing for different ultrasound transducers to be used based on procedural needs. Variations of each embodiment are also disclosed. | 08-21-2008 |
20110077559 | ULTRASOUND THERAPY HEAD WITH MOVEMENT CONTROL - A therapy head for use in HIFU procedures is described. The therapy head has an enclosure with a window, an energy applicator and a means of moving the energy applicator within the enclosure. The therapy head uses motors and actuators to move the energy applicator, usually an ultrasound transducer, inside the enclosure. A controller is provided either internally or externally that allows the therapy head to identify and distinguish locations where the therapy head should be to radiate energy into a patient. The controller uses the motors and actuators to move the energy applicator into the desired locations. | 03-31-2011 |
20110140573 | TRANSDUCER WITH SHIELD - A physical shield placed on the face of a high intensity focused ultrasound transducer for medical applications is described. The shield may be shaped or angled to match a particular pattern of mechanical or acoustic energy that may damage the transducer during operation. The shield may be ablative, replaceable or modified as needed. Methods of manufacturing a transducer with a shield are also disclosed. | 06-16-2011 |
20110213280 | DISPOSABLE TRANSDUCER SEAL - A transducer seal designed to seal an open aperture of a transducer housing for a therapeutic ultrasound procedure. The seal has a membrane, a retainer and a mating device for locking in place with the transducer housing. The membrane is essentially transparent to ultrasound energy while being stretched taut about the retainer. The transducer seal may be made in a disposable or re-usable form. | 09-01-2011 |
20120191019 | APPARATUS AND METHODS FOR NON-INVASIVE BODY CONTOURING - Methods and devices for applying high intensity focused ultrasound to modulate collagen in animal tissue (such as to disrupt collagen fibrils in a mammal, such as a human), particularly to enhance the aesthetic appearance of skin, and/or to otherwise improve skin conditions. | 07-26-2012 |
Jens Ulrich Quistgaard, Seattle, WA US
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20140018708 | Human Interface and Device for Ultrasound Guided Treatment - A system and method for providing real-time, image-guided high intensity focused ultrasound (HIFU) targeting and treatment of tissue. In one embodiment, the system includes an HIFU applicator and a user interface with a touchscreen display for three-dimensional visualization of the tissue. Image frames displayed on the user interface depict real-time images of the tissue, including an image parallel to a feature of the applicator and an image orthogonal to the parallel image. Reference lines may be sketched using the touchscreen and displayed on the image frames. In one embodiment, tissue boundaries are detected and marked on the image frames, either by the user or automatically by the system. In another embodiment, the user interface includes a footswitch for the user to interact with the system. In another embodiment, the system includes an ultrasound imaging component configured to undock from the system for use as a stand-alone ultrasound imaging device. | 01-16-2014 |
Jens Ulrich Quistgaard, Shoreline, WA US
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20140358007 | METHOD AND APPARATUS FOR POSITIONING MEDICAL DEVICE - Placement of a medical device within or in proximity to a substantially fluid filled compartment within a human body is aided by pulse-echo ultrasound and a time-stretching technique. In one embodiment, a small ultrasound transducer is placed near the tip of a catheter intended to be positioned within a ventricle of the brain to drain cerebrospinal fluid. The transducer is electrically pulsed so as to emit sound waves, and then used to receive returning echoes which contain information about structures in front of the transducer. These returning echoes are electronically amplified and processed in such a way that the information represented by the echoes is spread out over a much longer period than the actual acquisition time. This processed information may be presented to an operator visually, via audio feedback and/or via tactile feedback. Embodiments are disclosed where the information is displayed visually through variations in the color or brightness of a light source over time. Further embodiments are disclosed where the information is conveyed through audio that is modulated in amplitude, frequency, or both. Further embodiments are disclosed where the information is conveyed through tactile feedback that is modulated in intensity or duration. Further embodiments are disclosed which combine audio, visual, and/or tactile feedback. Further embodiments incorporate a digital or graphical display to provide quantitative information. | 12-04-2014 |