Method and device for ultrasound drug delivery
First Claim
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1. A device for ultrasonic drug delivery comprising:
- (a) means for producing oscillating non-radial ultrasonic waves, said means having a radiation surface; and
(b) means for dispensing a liquid or powder drug onto the radiation surface to produce an aerosol spray upon contact of the dispensed liquid or powder drug with the radiation surface, said aerosol spray having drug particles energized by said oscillating ultrasonic waves;
wherein the means for producing ultrasonic waves operates at a frequency in the range of 20 kHz to 200 kHz, such that said ultrasonic waves carry and direct said energized drug particles into a patient'"'"'s mouth or onto another target for causing penetration of said drug particles below the tissue surface.
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Abstract
The present invention concerns a device for creating a directed spray of liquid or powder particles which is produced by contacting the liquid of powder with a radiation surface of an ultrasonic transducer such as a piezofilm or ultrasound tip. The ultrasonic waves cause the spray to project outwardly from the radiation surface and directs it into a patient'"'"'s mouth or onto another target. Directed particle spray delivers sharp dosage and uniformed up to 90% particle size drug delivery.
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Citations
26 Claims
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1. A device for ultrasonic drug delivery comprising:
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(a) means for producing oscillating non-radial ultrasonic waves, said means having a radiation surface; and
(b) means for dispensing a liquid or powder drug onto the radiation surface to produce an aerosol spray upon contact of the dispensed liquid or powder drug with the radiation surface, said aerosol spray having drug particles energized by said oscillating ultrasonic waves;
wherein the means for producing ultrasonic waves operates at a frequency in the range of 20 kHz to 200 kHz, such that said ultrasonic waves carry and direct said energized drug particles into a patient'"'"'s mouth or onto another target for causing penetration of said drug particles below the tissue surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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18. A method for ultrasonic drug delivery comprising:
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(a) providing a means for producing oscillating non-radial ultrasonic waves, said means having a radiation surface;
(b) providing a means for dispensing a liquid or powder drug onto the radiation surface in order to produce an aerosol spray upon contact of the dispensed liquid or powder drug with the radiation surface, said aerosol spray having drug particles energized by said oscillating ultrasonic waves; and
(c) propagating said drug particles into a patient'"'"'s mouth or onto another target, said oscillating ultrasonic waves carrying and directing said energized drug particles for causing penetration of said drug particles below the tissue surface;
wherein the means for producing ultrasonic waves operates at a frequency in the range of 20 kHz to 200 kHz.
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19. A device for ultrasonic drug delivery comprising:
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(a) a transducer for producing ultrasonic waves, said transducer having a radiation surface positioned at a predetermined intersecting angle with respect to the horizontal; and
(b) a dispenser for dispensing a fluid drug onto the radiation surface to produce an aerosol spray of drug particles having substantially uniform size, wherein the distance between the radiation surface and a dispensing end of the dispenser is greater than the diameter of a drop of fluid dispensed by the dispenser;
wherein the transducer operates at a frequency in the range of 20 kHz to 200 kHz, such that said ultrasonic waves carry and direct said energized drug particles into a patient'"'"'s mouth or onto another target for causing penetration of said drug particles below the tissue surface. - View Dependent Claims (20, 21)
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22. A device for ultrasonic drug delivery comprising:
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(a) a transducer for producing non-radial ultrasonic waves, said transducer having a radiation surface positioned at a predetermined intersecting angle with respect to the horizontal; and
(b) a dispenser for dispensing a powder drug onto the radiation surface to produce an aerosol spray of drug particles having substantially uniform size;
wherein the transducer operates at a frequency in the range of 20 kHz to 200 kHz, such that said ultrasonic waves carry and direct said energized drug particles into a patient'"'"'s mouth or onto another target for causing penetration of said drug particles below the tissue surface.
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23. A method for ultrasonic drug delivery comprising:
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(a) providing a transducer for producing oscillating ultrasonic waves, said transducer having a radiation surface positioned at a predetermined intersecting angle with respect to the horizontal;
(b) providing a dispenser for dispensing a fluid drug onto the radiation surface in order to produce an aerosol spray of drug particles having substantially uniform size, wherein the distance between the radiation surface and a dispensing end of the dispenser is greater than the diameter of a drop of fluid dispensed by the dispenser;
(c) directing said substantially uniform size drug particles into contact with a patient; and
(d) operating said transducer at a frequency in the range of 20 kHz to 200 kHz, such that said ultrasonic waves carry and direct said energized drug particles into a patient'"'"'s mouth or onto another target for causing penetration of said drug particles below the tissue surface. - View Dependent Claims (24, 25)
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26. A method for ultrasonic drug delivery comprising:
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(a) providing a transducer for producing non-radial ultrasonic waves, said transducer having a radiation surface positioned at a predetermined intersecting angle with respect to the horizontal;
(b) providing a dispenser for dispensing a powder drug onto the radiation surface to produce an aerosol spray of drug particles having substantially uniform size;
(c) directing said substantially uniform size drug particles into contact with a patient; and
(d) operating said transducer at a frequency in the range of 20 kHz to 200 kHz, such that said ultrasonic waves carry and direct said energized drug particles into a patient'"'"'s mouth or onto another target for causing penetration of said drug particles below the tissue surface.
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Specification