US5704361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Volumetric image ultrasound transducer underfluid catheter system
Assignee: Mayo Clinic in Florida
•
Filing: 1996-06-28
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Granted: 1998-01-06
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Expires: 2016-06-28
Abstract
Abstract An underfluid ultrasound imaging catheter system includes a catheter having a distal end inserted into an underfluid structure, an ultrasonic transducer array mounted proximate the distal end of the catheter wherein the array has a row of individual transducer crystals, a lens mounted on the array for defocusing ultrasound beams in a direction perpendicular to an axis of the array so as to provide a volumetric field of view within which the underfluid features are imaged. Alternatively, the single row of transducer crystals is replaced by multiple rows of transducer crystals so as to provide a volumetric field of view. This imaging catheter system helps an operator see 3-dimensional images of an underfluid environment, such as the 3-dimensional images of fluid-filled cavities of heart, blood vessel, urinary bladder, etc. Features in such wide volumetric field of view can be imaged, measured, or intervened by an underfluid therapeutic device with an aid of the real-time image.
Inventors
- 👤 James Bernard Seward
- 👤 Abdul Jamil Tajik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 09:52
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/12; A61B17/00; A61B17/22; A61B8/06; A61B8/44; A61B8/4483; A61B8/4488; A61B8/48; A61B8/483; A61B10/00; A61B10/02; A61B10/04; A61B17/22004; A61B17/22012; A61B17/32; A61B17/3205; A61B17/3207; A61B17/320758; A61B18/00; A61B18/04; A61B18/12; A61B18/14; A61B18/1477; A61B2017/00743; A61B2017/00778; A61B2017/00783; A61B2018/00315; A61B2018/00345; A61B2018/00351; A61B2018/00392; A61B2018/1405; A61B2018/1425; A61B90/00; A61B90/36; A61B90/37; A61B2090/378; A61B2090/3782; A61B2090/3784; A61B2217/00; A61B2217/002; A61B2217/005; A61B8/4444; A61B8/445; A61M; A61M25/00; A61M25/0067; A61M25/0082; A61M2025/0096; Y; Y10; Y10S; Y10S128/00; Y10S128/916
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
135 words
A real-time imaging catheter apparatus, comprising: an elongated body having proximal and distal ends; an ultrasonic transducer linear phased array mounted proximate the distal end of the elongated body, the array transmitting ultrasound beams and receiving resultant echoes, the array comprising a row of individual transducer elements aligned generally in a longitudinal direction of the elongated body; a lens mounted on the array for defocusing the ultrasound beams, at least some of the beams being directed laterally outward in an elevational dimension of the array, which is perpendicular to an azimuthal dimension of the array, providing a real-time three dimensional image, so that features can be measured and intervened under a real-time observation; and an electrical conductor, disposed in the elongated body, electrically connecting the transducer to a control circuitry external of the elongated body.
Claim 2
Dependent Claim
135 words
A real-time imaging catheter apparatus, comprising: an elongated body having proximal and distal ends; an ultrasonic transducer linear phased array mounted proximate the distal end of the elongated body, the array transmitting ultrasound beams and receiving resultant echoes, the array comprising a row of individual transducer elements aligned generally in a longitudinal direction of the elongated body; a lens mounted on the array for defocusing the ultrasound beams, at least some of the beams being directed laterally outward in an elevational dimension of the array, which is perpendicular to an azimuthal dimension of the array, providing a real-time three dimensional image, so that features can be measured and intervened under a real-time observation; and an electrical conductor, disposed in the elongated body, electrically connecting the transducer to a control circuitry external of the elongated body.
Claim 3
Dependent Claim
21 words
A real-time imaging catheter apparatus in accordance with claim 1, wherein the lens is a planoconcave lens made from silicone rubber.
Claim 4
Dependent Claim
22 words
A real-time imaging catheter apparatus in accordance with claim 1, wherein the lens is a planoconvex lens made from a plastic material.
Claim 5
Dependent Claim
116 words
A real-time imaging catheter apparatus, comprising: an elongated body having proximal and distal ends; an ultrasonic transducer linear phased array mounted proximate the distal end of the elongated body, the array transmitting ultrasound beams and receiving resultant echoes, the array comprising a plurality of rows of individual arrays, each individual array having a plurality of individual transducer elements, the transducer elements being phased in both an elevation dimension and an azimuthal dimension of the array which provides a real-time three dimensional image, so that features can be measured and intervened under a real-time observation; and an electrical conductor, disposed in the elongated body, electrically connecting the transducer to a control circuitry external of the elongated body.
Claim 6
Dependent Claim
116 words
A real-time imaging catheter apparatus, comprising: an elongated body having proximal and distal ends; an ultrasonic transducer linear phased array mounted proximate the distal end of the elongated body, the array transmitting ultrasound beams and receiving resultant echoes, the array comprising a plurality of rows of individual arrays, each individual array having a plurality of individual transducer elements, the transducer elements being phased in both an elevation dimension and an azimuthal dimension of the array which provides a real-time three dimensional image, so that features can be measured and intervened under a real-time observation; and an electrical conductor, disposed in the elongated body, electrically connecting the transducer to a control circuitry external of the elongated body.
Claim 7
Dependent Claim
109 words
A real-time imaging catheter apparatus, comprising: an elongated body having proximal and distal ends; an ultrasonic transducer linear phased array mounted proximate the distal end of the elongated body, the array transmitting ultrasound beams and receiving resultant echoes, the array comprising equal numbers of rows and columns of individual transducer elements, the transducer elements being phased in both an elevation dimension and an azimuthal dimension of the array which provides a real-time three dimensional image, so that features can be measured and intervened under a real-time observation; and an electrical conductor, disposed in the elongated body, electrically connecting the transducer to a control circuitry external of the elongated body.
Claim 8
Dependent Claim
109 words
A real-time imaging catheter apparatus, comprising: an elongated body having proximal and distal ends; an ultrasonic transducer linear phased array mounted proximate the distal end of the elongated body, the array transmitting ultrasound beams and receiving resultant echoes, the array comprising equal numbers of rows and columns of individual transducer elements, the transducer elements being phased in both an elevation dimension and an azimuthal dimension of the array which provides a real-time three dimensional image, so that features can be measured and intervened under a real-time observation; and an electrical conductor, disposed in the elongated body, electrically connecting the transducer to a control circuitry external of the elongated body.
Claim 9
Dependent Claim
139 words
A real-time imaging catheter apparatus for underfluid imaging, intervention, and measuring, comprising: an elongated, flexible body having proximal and distal ends, the distal end being inserted into an underfluid structure; an ultrasonic transducer linear phased array mounted on the elongated body proximate the distal end of the elongated body, the array producing a a real-time three dimensional image of the underfluid structure in front of the array outside the elongated body, features of the underfluid structure can be intervened by a therapeutic device and measured under a real-time observation; a port disposed in the elongated body extending from proximate the proximal end to proximate the distal end of the elongated body for receiving the therapeutic device, the therapeutic device being operated underfluid with an aid of the real-time image; and means for actuating the ultrasonic transducer linear phased array.
Claim 10
Dependent Claim
139 words
A real-time imaging catheter apparatus for underfluid imaging, intervention, and measuring, comprising: an elongated, flexible body having proximal and distal ends, the distal end being inserted into an underfluid structure; an ultrasonic transducer linear phased array mounted on the elongated body proximate the distal end of the elongated body, the array producing a a real-time three dimensional image of the underfluid structure in front of the array outside the elongated body, features of the underfluid structure can be intervened by a therapeutic device and measured under a real-time observation; a port disposed in the elongated body extending from proximate the proximal end to proximate the distal end of the elongated body for receiving the therapeutic device, the therapeutic device being operated underfluid with an aid of the real-time image; and means for actuating the ultrasonic transducer linear phased array.
Claim 11
Dependent Claim
39 words
A real-time imaging catheter in accordance with claim 6, further comprising a guidewire port disposed in the elongated body extending from proximate the proximal end to proximate the distal end of the elongated body for receiving a guide wire.
Claim 12
Dependent Claim
138 words
A real-time imaging catheter apparatus, comprising: an elongated catheter body having proximal and distal ends and a longitudinal axis; and an ultrasound imaging system for transmitting ultrasonic beams and receiving resultant echoes, the ultrasound imaging system including a transducer array mounted proximate the distal end of the elongated catheter body and including a plurality of individual transducer elements in an azimuthal dimension of the array that is substantially parallel to the longitudinal axis of the elongated catheter body, the ultrasound imaging system being constructed and arranged to spread the ultrasonic beams such that the ultrasonic beams cover a 3-dimensional scanning region, the scanning region being defined by the azimuthal dimension, a depth dimension transversely aligned with respect to the azimuthal dimension, and an elevational dimension transversely aligned with respect to both the depth dimension and the azimuthal dimension.
Claim 13
Dependent Claim
138 words
A real-time imaging catheter apparatus, comprising: an elongated catheter body having proximal and distal ends and a longitudinal axis; and an ultrasound imaging system for transmitting ultrasonic beams and receiving resultant echoes, the ultrasound imaging system including a transducer array mounted proximate the distal end of the elongated catheter body and including a plurality of individual transducer elements in an azimuthal dimension of the array that is substantially parallel to the longitudinal axis of the elongated catheter body, the ultrasound imaging system being constructed and arranged to spread the ultrasonic beams such that the ultrasonic beams cover a 3-dimensional scanning region, the scanning region being defined by the azimuthal dimension, a depth dimension transversely aligned with respect to the azimuthal dimension, and an elevational dimension transversely aligned with respect to both the depth dimension and the azimuthal dimension.
Claim 14
Dependent Claim
25 words
A real-time imaging catheter apparatus of claim 8, wherein the ultrasound imaging system includes a lens for spreading the ultrasonic beams in the elevational dimension.
Claim 15
Dependent Claim
42 words
A real-time imaging catheter apparatus of claim 8, wherein the transducer array includes multiple rows of individual arrays, each individual array having a plurality of transducer elements, and the transducer array is phased in both the elevational dimension and the azimuthal dimension.
Claim 16
Dependent Claim
42 words
A real-time imaging catheter apparatus of claim 8, wherein the transducer array includes one and one half rows of individual arrays, each individual array having transducer elements, and the transducer array is phased in both the elevational dimension and the azimuthal dimension.
References Cited (Backward Citations)
US3789833A
Cited
US3938502A
Cited
US4028934A
Cited
US4462408A
Cited
US4582067A
Cited
US4543960A
Cited
US4550607A
Cited
US4957111A
Cited
US4699009A
Cited
US4794931A
Cited
EP0600568A1
Cited
US4771788A
Cited
US4802487A
Cited
US4841977A
Cited
US4917097A
Cited
US5081993A
Cited
US4887605A
Cited
US4951677A
Cited
US4911170A
Cited
US5140558A
Cited
US5105819A
Cited
US5165413A
Cited
US5014710A
Cited
US4947852A
Cited
US4936281A
Cited
US5022399A
Cited
WO1990013260A1
Cited
US5029588A
Cited
US5002059A
Cited
US5038789A
Cited
WO1991004707A1
Cited
US5125410A
Cited
US5070879A
Cited
US5148810A
Cited
US5261408A
Cited
US5235986A
Cited
US5161537A
Cited
US5186175A
Cited
US5076279A
Cited
US5076278A
Cited
US5360007A
Cited
US5193546A
Cited
US5199437A
Cited
US5325860A
Cited
US5345940A
Cited
US5186177A
Cited
US5211168A
Cited
US5222501A
Cited
US5373845A
Cited
US5297553A
Cited
US5291893A
Cited
US5329496A
Cited
US5285788A
Cited
US5311871A
Cited
US5305756A
Cited
US5465724A
Cited
US5385148A
Cited
US5415175A
Cited
US5438998A
Cited
WO1995019143A1
Cited
WO1996000522A1
Cited
WO1996003922A1
Cited
WO1996003918A1
Cited
WO1996004588A1
Cited
WO1996003921A1
Cited
US5549111A
Cited
US5503152A
Cited
US5460181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-01-05 | 2001-07-07 | 2002-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-01-05 | 2005-07-07 | 2006-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-01-05 | 2009-07-07 | 2010-01-06 | $7700.00 | Window Closed / Lapsed |