Inventors list

Assignees list

Classification tree browser

Top 100 Inventors

Top 100 Assignees


David M. Perozek, Mercer Island US

David M. Perozek, Mercer Island, WA US

Patent application numberDescriptionPublished
20090036774CONTROLLED HIGH EFFICIENCY LESION FORMATION USING HIGH INTENSITY ULTRASOUND - An ultrasound system used for both imaging and delivery high intensity ultrasound energy therapy to treatment sites and a method for treating tumors and other undesired tissue within a patient's body with an ultrasound device. The ultrasound device has an ultrasound transducer array disposed on a distal end of an elongate, relatively thin shaft. In one form of the invention, the transducer array is disposed within a liquid-filled elastomeric material that more effectively couples ultrasound energy into the tumor, that is directly contacted with the device. Using the device in a continuous wave mode, a necrotic zone of tissue having a desired size and shape (e.g., a necrotic volume selected to interrupt a blood supply to a tumor) can be created by controlling at least one of the f-number, duration, intensity, and direction of the ultrasound energy administered. This method speeds the therapy and avoids continuously pausing to enable intervening normal tissue to cool.02-05-2009
20090062697INSERTABLE ULTRASOUND PROBES, SYSTEMS, AND METHODS FOR THERMAL THERAPY - Disclosed herein are methods and systems for producing hemostasis, tissue closure, or vessel closure by inserting a thermal delivery probe into a passageway and emitting thermal energy from the probe to produce the hemostasis or tissue closure. These methods and systems may be used following a percutaneous medical procedure that creates a passageway in tissue of patient, such as is caused by introduction of an access device into the patient. The thermal delivery probe may have one or more ultrasound transducers positioned in an elongated shaft.03-05-2009
20110021913USE OF FOCUSED ULTRASOUND FOR VASCULAR SEALING - An ultrasonic applicator unit (01-27-2011
20110066085FORMATION OF ULTRASOUND BASED HEATING REGIONS ADJACENT BLOOD VESSELS - An ultrasound system used for both imaging and delivery high intensity ultrasound energy therapy to treatment sites and a method for treating tumors and other undesired tissue within a patient's body with an ultrasound device. The ultrasound device has an ultrasound transducer array disposed on a distal end of an elongate, relatively thin shaft. In one form of the invention, the transducer array is disposed within a liquid-filled elastomeric material that more effectively couples ultrasound energy into the tumor, that is directly contacted with the device. Using the device in a continuous wave mode, a necrotic zone of tissue having a desired size and shape (e.g., a necrotic volume selected to interrupt a blood supply to a tumor) can be created by controlling at least one of the f-number, duration, intensity, and direction of the ultrasound energy administered. This method speeds the therapy and avoids continuously pausing to enable intervening normal tissue to cool.03-17-2011
20110118602METHODS AND APPARATUS FOR FOCUSED ULTRASOUND APPLICATION - An ultrasonic applicator unit (05-19-2011
20110178403METHODS AND DEVICES TO TARGET VASCULAR TARGETS WITH HIGH INTENSITY FOCUSED ULTRASOUND - An ultrasonic applicator unit (07-21-2011
20110178445METHODS AND DEVICES TO TARGET VASCULAR TARGETS WITH HIGH INTENSITY FOCUSED ULTRASOUND - An ultrasonic applicator unit (07-21-2011
20110230763SYSTEM AND METHOD FOR TREATING A THERAPEUTIC SITE - A targeting catheter is used to locate an arteriotomy, such as is formed during a femoral artery catheterization procedure. The targeting catheter includes one or more targeting aids, such as an inflatable balloon or sensor (e.g., Doppler or temperature sensor), to locate the arteriotomy. The targeting aid may be positioned at the arteriotomy. An ultrasonic beacon on the catheter may then be located relative to a therapeutic ultrasonic applicator (e.g., by using acoustic time-of-flight) so that the focus of ultrasonic energy from the applicator can be aligned with the arteriotomy.09-22-2011
20110230796SYSTEM AND METHOD FOR TREATING A THERAPEUTIC SITE - A targeting catheter is used to locate an arteriotomy, such as is formed during a femoral artery catheterization procedure. The targeting catheter includes one or more targeting aids, such as an inflatable balloon or sensor (e.g., Doppler or temperature sensor), to locate the arteriotomy. The targeting aid may be positioned at the arteriotomy. An ultrasonic beacon on the catheter may then be located relative to a therapeutic ultrasonic applicator (e.g., by using acoustic time-of-flight) so that the focus of ultrasonic energy from the applicator can be aligned with the arteriotomy.09-22-2011

Patent applications by David M. Perozek, Mercer Island, WA US