WO2003101530A3 - Solid hydrogel coupling for ultrasound imaging and therapy - Google Patents

Solid hydrogel coupling for ultrasound imaging and therapy Download PDF

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Publication number
WO2003101530A3
WO2003101530A3 PCT/US2003/016981 US0316981W WO03101530A3 WO 2003101530 A3 WO2003101530 A3 WO 2003101530A3 US 0316981 W US0316981 W US 0316981W WO 03101530 A3 WO03101530 A3 WO 03101530A3
Authority
WO
WIPO (PCT)
Prior art keywords
therapy
hydrogel
ultrasound imaging
tissue
ultrasound
Prior art date
Application number
PCT/US2003/016981
Other languages
French (fr)
Other versions
WO2003101530A2 (en
Inventor
Shahram Vaezy
Adrian Prokop
Roy Martin
Peter Kaczkowski
Misty Noble
Original Assignee
Univ Washington
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Univ Washington filed Critical Univ Washington
Priority to CA002484515A priority Critical patent/CA2484515A1/en
Priority to EP03756271A priority patent/EP1519683A4/en
Priority to AU2003232433A priority patent/AU2003232433A1/en
Priority to JP2004508882A priority patent/JP2005527336A/en
Publication of WO2003101530A2 publication Critical patent/WO2003101530A2/en
Publication of WO2003101530A3 publication Critical patent/WO2003101530A3/en

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K41/00—Medicinal preparations obtained by treating materials with wave energy or particle radiation ; Therapies using these preparations
    • A61K41/0028—Disruption, e.g. by heat or ultrasounds, sonophysical or sonochemical activation, e.g. thermosensitive or heat-sensitive liposomes, disruption of calculi with a medicinal preparation and ultrasounds
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B8/00—Diagnosis using ultrasonic, sonic or infrasonic waves
    • A61B8/42—Details of probe positioning or probe attachment to the patient
    • A61B8/4272—Details of probe positioning or probe attachment to the patient involving the acoustic interface between the transducer and the tissue
    • A61B8/4281—Details of probe positioning or probe attachment to the patient involving the acoustic interface between the transducer and the tissue characterised by sound-transmitting media or devices for coupling the transducer to the tissue
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61K—PREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K49/00—Preparations for testing in vivo
    • A61K49/22—Echographic preparations; Ultrasound imaging preparations ; Optoacoustic imaging preparations
    • A61K49/222—Echographic preparations; Ultrasound imaging preparations ; Optoacoustic imaging preparations characterised by a special physical form, e.g. emulsions, liposomes
    • A61K49/226—Solutes, emulsions, suspensions, dispersions, semi-solid forms, e.g. hydrogels
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N7/00—Ultrasound therapy
    • A61N7/02—Localised ultrasound hyperthermia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61P—SPECIFIC THERAPEUTIC ACTIVITY OF CHEMICAL COMPOUNDS OR MEDICINAL PREPARATIONS
    • A61P35/00—Antineoplastic agents
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/22—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for
    • A61B17/225—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for for extracorporeal shock wave lithotripsy [ESWL], e.g. by using ultrasonic waves
    • A61B17/2251—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for for extracorporeal shock wave lithotripsy [ESWL], e.g. by using ultrasonic waves characterised by coupling elements between the apparatus, e.g. shock wave apparatus or locating means, and the patient, e.g. details of bags, pressure control of bag on patient
    • A61B2017/2253—Implements for squeezing-off ulcers or the like on the inside of inner organs of the body; Implements for scraping-out cavities of body organs, e.g. bones; Calculus removers; Calculus smashing apparatus; Apparatus for removing obstructions in blood vessels, not otherwise provided for for extracorporeal shock wave lithotripsy [ESWL], e.g. by using ultrasonic waves characterised by coupling elements between the apparatus, e.g. shock wave apparatus or locating means, and the patient, e.g. details of bags, pressure control of bag on patient using a coupling gel or liquid

Abstract

The present invention employs hydrogels as acoustic couplings for clinical applications of ultrasound imaging and therapy, but is particularly applicable to high intensity focused ultrasound (HIFU) based therapy. While other materials can be used, it has been determined that polyacrylamide is sufficiently robust and transmissive to withstand the high temperatures encountered in HIFU therapy. One embodiment of a hydrogel coupling (16) is configured in shape and size (length) to ensure that a focal region (14) of an ultrasound transducer (10a) is disposed proximate the target area when the distal tip (18) of the transducer (10a) is in contact with tissue. These couplings (16) can be shaped to correspond to the beam focus characteristics of specific transducers (10a). Water can be applied to hydrate the tip of the hydrogel coupling during use, and medication absorbed into the hydrogel material can be applied to the tissue in contact with the distal surface of the hydrogel.
PCT/US2003/016981 2002-05-30 2003-05-30 Solid hydrogel coupling for ultrasound imaging and therapy WO2003101530A2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
CA002484515A CA2484515A1 (en) 2002-05-30 2003-05-30 Solid hydrogel coupling for ultrasound imaging and therapy
EP03756271A EP1519683A4 (en) 2002-05-30 2003-05-30 Solid hydrogel coupling for ultrasound imaging and therapy
AU2003232433A AU2003232433A1 (en) 2002-05-30 2003-05-30 Solid hydrogel coupling for ultrasound imaging and therapy
JP2004508882A JP2005527336A (en) 2002-05-30 2003-05-30 Solid hydrogel conjugate for ultrasonic imaging and ultrasonic therapy, and acoustic coupling method and hydrogel mass production method thereof

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38456602P 2002-05-30 2002-05-30
US60/384,566 2002-05-30

Publications (2)

Publication Number Publication Date
WO2003101530A2 WO2003101530A2 (en) 2003-12-11
WO2003101530A3 true WO2003101530A3 (en) 2004-04-08

Family

ID=29712058

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/016981 WO2003101530A2 (en) 2002-05-30 2003-05-30 Solid hydrogel coupling for ultrasound imaging and therapy

Country Status (6)

Country Link
US (2) US7070565B2 (en)
EP (1) EP1519683A4 (en)
JP (1) JP2005527336A (en)
AU (1) AU2003232433A1 (en)
CA (1) CA2484515A1 (en)
WO (1) WO2003101530A2 (en)

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WO2003101530A2 (en) 2003-12-11
EP1519683A4 (en) 2008-03-19
EP1519683A2 (en) 2005-04-06
US20060184074A1 (en) 2006-08-17
JP2005527336A (en) 2005-09-15
US7070565B2 (en) 2006-07-04
AU2003232433A1 (en) 2003-12-19
CA2484515A1 (en) 2003-12-11
US20030233045A1 (en) 2003-12-18

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