Ultrasonic medical device
AssigneeNeurosonix Ltd.
InventorSimcha Milo
Life of this patent
Estimating the term…
Abstract
Ultrasonic devices for preventing microbubbles and/or microparticles from reaching the brain during a PCI, or cardiovascular surgery. Devices 27 and 77 are designed for implantation in the chest cavity and operate in combination with needle vents or other vent systems for removing diverted microbubbles. Systems 77 and 83 are designed for noninvasive employment. Devices 57 and 87 are particularly designed to prevent microbubbles from reaching the great origins of the carotid arteries and/or for diverting bubbles that might reach the vicinity and otherwise pass through. Improved devices 11 and 94 separate microbubbles from a flowing bloodstream and produce a cleansed stream.
Claims27
A medical treatment device for preventing microbubbles and/or microparticles from entering the neck vessels of a patient comprising
- collar means for association with the exterior of the neck of a patient undergoing treatment which might give rise to the creation of microbubbles and/or microparticles in the bloodstream, which collar means contains multiple transducers in selected locations such that they will focus ultrasonic waves that are generated in a collar region of the patient at the exterior of the neck and direct them downward and inward at both great origins of the neck vessels at the arch of the aorta, and
- means for powering such transducers so as to send ultrasonic waves that cause microbubbles and/or microparticles to deviate within the flowing bloodstream so as not to enter said great origins and instead travel to the lower part of the patient's body.
A method for treating a patient undergoing cardiac surgery or a percutaneous cardiological intervention so as to prevent microbubbles and/or microparticles in the blood of the patient from entering the neck vessels of the patient which method comprises the steps of:
- directing ultrasonic waves into the ascending aorta of the patient, and
- focusing such waves to direct microbubbles and/or micropartircles toward a wail of the ascending aorta.
A medical treatment device for removing microbubbles and/or microparticles from a patient's bloodstream, which device comprises
- transducer means for association with the exterior surface of the posterior side of the aorta in the general region of the transverse sinus,
- means for powering said transducer means to generate ultrasonic waves that are directed toward the anterior side of the aorta,
- sidestream-removal means for insertion into the anterior side of the aorta downstream of the transverse sinus, and
- means for removing blood and microbubbles and/or microparticles through said sidestream-removal means.
A method for controlling flow in a blood vessel in a body of a patient, the method comprising:
- positioning one or more ultrasonic transducers to be appropriately located and associated with the body of a patient;
- and
- actuating at least one such transducer to transmit ultrasonic waves toward the blood vessel, which branches into at least a first branch vessel, so as to cause at least one of microbubbles and microparticles that may be flowing in blood in the blood vessel to be deflected away from the first branch vessel.
A device for controlling flow in a blood vessel in a body of a patient which branches into at least a first branch vessel, said device comprising:
- a collar which is adapted to be placed around the patient's neck;
- and
- one or more ultrasonic transducers, fixed to the collar so as to be positioned in a selected location relative to the body when the collar is placed around the neck, and adapted, while so positioned, to transmit ultrasonic waves toward the blood vessel, so as to cause at least one of microbubbles and microparticles that may be flowing in blood in the blood vessel to be deflected away from the first branch vessel.
A device for controlling flow in an aorta in a chest cavity of a patient which device comprises:
- a holder, which is adapted to be placed in the chest cavity in association with the aorta;
- and
- one or more ultrasonic transducers, which are adapted to be fixed by the holder in proximity to the aorta and to transmit ultrasonic waves into the aorta which waves have sufficient power so as to cause at least one of microbubbles and microparticles flowing in the aorta which are so affected by said ultrasonic waves to be deflected away from a great origin of a neck vessel.
Dependencies are inferred from the claim text.