US5713363A
Expired / Lapsed
US
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Ultrasound catheter and method for imaging and hemodynamic monitoring
Assignee: Mayo Clinic in Florida
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Filing: 1996-04-24
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Granted: 1998-02-03
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Expires: 2016-04-24
Abstract
Abstract A catheter apparatus for monitoring cardiovascular function is provided. The catheter apparatus contains an elongated body having proximal and distal ends; a phased-array ultrasonic transducer; and an electrical conductor. The phased-array ultrasonic transducer is mounted proximate the distal end of the catheter body to transmit ultrasound and receive resultant echoes so as to provide a field of view within which flow rates can be measured and features imaged. The electrical conductor is disposed in the catheter body for electrically connecting the transducer to control circuitry external of the catheter.
Inventors
- 👤 James Bernard Seward
- 👤 Abdul Jamil Tajik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:07
CPC Classifications
A; A61; A61B; A61B8/00; A61B8/12; A61B17/00; A61B17/22; A61B8/44; A61B8/4483; A61B8/4488; 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
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
72 words
A catheter apparatus, comprising: an elongated body having proximal and distal ends; a linear phased-array ultrasonic transducer mounted proximate the distal end of the catheter body to transmit ultrasound and receive resultant echoes so as to provide a field of view within which flow rates can be measured and features imaged; and an electrical conductor disposed in the catheter body for electrically connecting the transducer to control circuitry external of the catheter.
Claim 2
Dependent Claim
72 words
A catheter apparatus, comprising: an elongated body having proximal and distal ends; a linear phased-array ultrasonic transducer mounted proximate the distal end of the catheter body to transmit ultrasound and receive resultant echoes so as to provide a field of view within which flow rates can be measured and features imaged; and an electrical conductor disposed in the catheter body for electrically connecting the transducer to control circuitry external of the catheter.
Claim 3
Dependent Claim
43 words
The catheter apparatus according to claim 1, further comprising a guide wire port disposed in the catheter body and extending from proximate the proximal end of the catheter body to proximate the distal end of the catheter body for receiving a guide wire.
Claim 4
Dependent Claim
14 words
The catheter apparatus according to claim 2, further comprising a deflection wire guidance system.
Claim 5
Dependent Claim
19 words
The catheter apparatus according to claim 1, wherein the ultrasonic transducer has a frequency of 5 to 20 MHz.
Claim 6
Dependent Claim
19 words
The catheter apparatus according to claim 1, wherein the ultrasonic transducer has a frequency of 7 to 10 MHz.
Claim 7
Dependent Claim
19 words
The catheter apparatus according to claim 1, wherein the catheter body has a diameter of 4 to 24 French.
Claim 8
Dependent Claim
19 words
The catheter apparatus according to claim 1, wherein the catheter body has a diameter of 6 to 12 French.
Claim 9
Dependent Claim
19 words
The catheter apparatus according to claim 1, wherein the catheter body has a diameter of 7 to 8 French.
Claim 10
Dependent Claim
18 words
The catheter apparatus according to claim 1, wherein the linear phased-array transducer is a multiplane phased-array ultrasound transducer.
Claim 11
Dependent Claim
27 words
The catheter apparatus according to claim 1, wherein the transducer is mounted on one side of the elongated body proximate the distal end of the elongated body.
Claim 12
Dependent Claim
29 words
The catheter apparatus according to claim 1, wherein the catheter is applicable when the distal end and a portion of the catheter body adjacent thereto are surrounded by blood.
Claim 13
Dependent Claim
111 words
A catheter apparatus, comprising: an elongated, flexible body having proximal and distal ends and first and second sides, wherein the first side extends further in the direction of the distal end of the catheter than the second side; a linear phased-array ultrasonic transducer, the transducer being mounted on proximate the distal end of the catheter body and proximate the first side of the catheter body to transmit ultrasound and receive resultant echoes so as to provide a field of view within which flow rates can be measured and features imaged; and an electrical conductor disposed in the catheter body for electrically connecting the transducer to control circuitry external of the catheter.
Claim 14
Dependent Claim
111 words
A catheter apparatus, comprising: an elongated, flexible body having proximal and distal ends and first and second sides, wherein the first side extends further in the direction of the distal end of the catheter than the second side; a linear phased-array ultrasonic transducer, the transducer being mounted on proximate the distal end of the catheter body and proximate the first side of the catheter body to transmit ultrasound and receive resultant echoes so as to provide a field of view within which flow rates can be measured and features imaged; and an electrical conductor disposed in the catheter body for electrically connecting the transducer to control circuitry external of the catheter.
Claim 15
Dependent Claim
133 words
A medical system, comprising: a catheter comprising: an elongated body having proximal and distal ends; a linear phased-array ultrasonic transducer mounted proximate the distal end of the catheter body to transmit ultrasound and receive resultant echoes so as to provide a field of view within which flow rates can be measured and features imaged; guide wire port disposed in the catheter body and extending from proximate the proximal end of the catheter body to proximate the distal end of the catheter body for receiving a guide wire; an electrical conductor disposed in the catheter body for electrically connecting the transducer to control circuitry external of the catheter; control circuitry means for controlling operation of the ultrasonic transducer; and display means for displaying the flow rates and the features imaged by the ultrasonic transducer.
Claim 16
Dependent Claim
133 words
A medical system, comprising: a catheter comprising: an elongated body having proximal and distal ends; a linear phased-array ultrasonic transducer mounted proximate the distal end of the catheter body to transmit ultrasound and receive resultant echoes so as to provide a field of view within which flow rates can be measured and features imaged; guide wire port disposed in the catheter body and extending from proximate the proximal end of the catheter body to proximate the distal end of the catheter body for receiving a guide wire; an electrical conductor disposed in the catheter body for electrically connecting the transducer to control circuitry external of the catheter; control circuitry means for controlling operation of the ultrasonic transducer; and display means for displaying the flow rates and the features imaged by the ultrasonic transducer.
Claim 17
Dependent Claim
23 words
A method system according to claim 13, wherein the transducer is mounted on one side of the elongated body proximate the distal end.
Claim 18
Independent Claim
147 words
A method of monitoring cardiovascular function using a catheter, the method comprising: disposing a catheter in one of a blood vessel and a heart, the catheter comprising: an elongated body having proximal and distal ends; a linear phased-array ultrasonic transducer mounted proximate the distal end of the catheter body to transmit ultrasound and receive resultant echoes so as to provide a field of view within which flow rates can be measured and features imaged; guide wire port disposed in the catheter body and extending from proximate the proximal end of the catheter body to proximate the distal end of the catheter body for receiving a guide wire; an electrical conductor disposed in the catheter body for electrically connecting the transducer to control circuitry external of the catheter; transmitting ultrasound from the transducer; receiving resultant echoes of the ultrasound using the transducer; analyzing the echoes to image features.
Claim 19
Independent Claim
147 words
A method of monitoring cardiovascular function using a catheter, the method comprising: disposing a catheter in one of a blood vessel and a heart, the catheter comprising: an elongated body having proximal and distal ends; a linear phased-array ultrasonic transducer mounted proximate the distal end of the catheter body to transmit ultrasound and receive resultant echoes so as to provide a field of view within which flow rates can be measured and features imaged; guide wire port disposed in the catheter body and extending from proximate the proximal end of the catheter body to proximate the distal end of the catheter body for receiving a guide wire; an electrical conductor disposed in the catheter body for electrically connecting the transducer to control circuitry external of the catheter; transmitting ultrasound from the transducer; receiving resultant echoes of the ultrasound using the transducer; analyzing the echoes to image features.
Claim 20
Dependent Claim
18 words
The method according to claim 15 further comprising analyzing the echoes with Doppler circuitry to provide hemodynamic information.
Claim 21
Dependent Claim
23 words
A method system according to claim 15, wherein the transducer is mounted on one side of the elongated body proximate the distal end.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-02-02 | 2001-08-04 | 2002-02-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-02-02 | 2005-08-04 | 2006-02-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-02-02 | 2009-08-04 | 2010-02-03 | $7700.00 | Window Closed / Lapsed |