Ultrasound catheter system having modulated output with feedback

Details Ultrasound catheter system having modulated output with feedback Ultrasound catheter system having modulated output with feedback

1993-10-04

1995-09-05

Pellegrino, Stephen C.

Surgery

Instruments

604 22, 12866203, A61B 1770

Patent

active

054475090

ABSTRACT:
A method and apparatus for driving an ultrasound transducer coupled to an ultrasound transmission disposed within an elongate catheter has a modulated output and utilizes feedback control. A modulating signal varying in amplitude and continuous in duration modulates an ultrasound transducer drive signal. The resulting modulated ultrasound transducer drive signal is likewise continuous in duration such that it lacks the abrupt accelerations which cause stress to be applied to the ultrasound transmission member in prior art devices. The current of the modulated drive signal is monitored and the voltage thereof is varied in response to changes in the current in order to provide feedback control. A transmission member breakage alarm provides an indication of transmission member breakage in the event that any comparison of the drive energy to the feedback control signal indicates that the desired ultrasonic vibration has been reached at a drive energy level less than the minimum drive energy level typically desired for such desired ultrasound vibration when the ultrasound transmission member is intact.

REFERENCES:
patent: 3352303 (1967-11-01), Delaney
patent: 3433226 (1969-03-01), Boyd
patent: 3526219 (1970-09-01), Balamuth
patent: 3565062 (1971-03-01), Kuris
patent: 3589363 (1971-06-01), Banko
patent: 3618594 (1970-11-01), Banko
patent: 3809093 (1974-05-01), Abraham
patent: 3823717 (1974-07-01), Pohlman
patent: 3861391 (1975-01-01), Antonevich et al.
patent: 4188952 (1980-02-01), Loschivlov et al.
patent: 4214586 (1980-07-01), Mericle
patent: 4223676 (1980-09-01), Wuchinich et al.
patent: 4337090 (1982-06-01), Harrison
patent: 4366819 (1983-01-01), Kaster
patent: 4431006 (1984-02-01), Trimmer et al.
patent: 4474180 (1994-10-01), Augulo
patent: 4505767 (1985-03-01), Quin
patent: 4565589 (1986-01-01), Harrison
patent: 4587958 (1986-05-01), Noguchi et al.
patent: 4587972 (1986-05-01), Morantte
patent: 4589419 (1986-05-01), Laughlin et al.
patent: 4665906 (1987-05-01), Jervis
patent: 4692139 (1987-09-01), Stiles
patent: 4741731 (1989-05-01), Starck
patent: 4750902 (1988-06-01), Wuchinich et al.
patent: 4764165 (1988-08-01), Reimels
patent: 4794931 (1989-01-01), Yock
patent: 4799496 (1989-01-01), Hargraves
patent: 4800876 (1989-01-01), Fox et al.
patent: 4808153 (1989-02-01), Parisi
patent: 4811743 (1989-03-01), Stevens
patent: 4821731 (1989-04-01), Martinelli
patent: 4841977 (1989-06-01), Griffith
patent: 4844092 (1989-07-01), Rydell
patent: 4867141 (1989-09-01), Nakada
patent: 4870953 (1989-10-01), DonMichael
patent: 4896811 (1975-07-01), Storz
patent: 4898575 (1990-02-01), Fischell et al.
patent: 4917097 (1990-04-01), Proudian et al.
patent: 4919133 (1990-04-01), Chiang
patent: 4920954 (1990-05-01), Alliger et al.
patent: 4923441 (1990-05-01), Shuler
patent: 4924864 (1990-05-01), Sterzer
patent: 4936281 (1990-06-01), Stasz
patent: 4957111 (1990-09-01), Millar
patent: 4960411 (1990-10-01), Buchbinder
patent: 4966583 (1990-10-01), Debbas
patent: 4967653 (1990-11-01), Hinz
patent: 4967753 (1990-11-01), Haase et al.
patent: 4979939 (1990-12-01), Shiber
patent: 4988356 (1991-01-01), Crittenden
patent: 4989583 (1991-02-01), Hood
patent: 4998527 (1991-03-01), Meyer
patent: 5022399 (1991-06-01), Biegeleisen
patent: 5029588 (1991-07-01), Yock et al.
patent: 5058570 (1991-10-01), Idemoto et al.
patent: 5061238 (1991-10-01), Shuler
patent: 5069664 (1991-12-01), Guess et al.
patent: 5076276 (1991-12-01), Sakurai et al.
patent: 5100423 (1992-03-01), Fearnot
patent: 5151085 (1992-09-01), Sakurai
patent: 5163421 (1992-11-01), Bernstein
patent: 5188589 (1993-02-01), Wypych
patent: 5199943 (1993-04-01), Wypych
patent: 5211625 (1993-05-01), Sakurai
patent: 5242385 (1993-09-01), Strukel
patent: 5248296 (1993-09-01), Alliger
patent: 5255669 (1993-10-01), Kubota
patent: 5261877 (1993-11-01), Fine
patent: 5267954 (1993-12-01), Nita
patent: 5269297 (1993-12-01), Weng
patent: 5302115 (1994-04-01), Pflueger et al.
patent: 5312328 (1994-05-01), Nita
patent: 5326342 (1994-07-01), Pflueger
Circulation, vol. 81, No. 2, Feb. 1990, "Application of a New Phased-Array Ultrasound Imaging Catheter in the Assessment of Vascular Dimensions," pp. 660-666.
"Ultrasonic Energy Causes Doe-Dependent, Endothelium-Independent Arterial Relaxation"-T. Fischell, et al. Abstracts of the 63rd Scientific Sessions, p. lll-219.

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