Real-time optoacoustic monitoring with electophysiologic catheters
First Claim
1. A catheter for opto-acoustic tissue assessment, comprising:
- a catheter body;
a tip section distal the catheter body, the tip section being adapted for irradiation and acoustic detection, wherein a tissue is heated by the irradiation to produce an acoustic wave that is detected by a acoustic detector mounted on the tip section and the acoustic detector generates a signal representative of a tissue characteristic.
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Accused Products
Abstract
A system and method for opto-acoustic tissue and lesion assessment in real time on one or more of the following tissue characteristics: tissue thickness, lesion progression, lesion width, steam pop, and char formation, system includes an ablation element, laser delivery means, and an acoustic sensor. The invention involves irradiating tissue undergoing ablation treatment to create acoustic waves that have a temporal profile which can be recorded and analyzed by acoustic sampling hardware for reconstructing a cross-sectional aspect of the irradiated tissue. The ablation element (e.g., RF ablation), laser delivery means and acoustic sensor are configured to interact with a tissue surface from a common orientation; that is, these components are each generally facing the tissue surface such that the direction of irradiation and the direction of acoustic detection are generally opposite to each other, where the stress waves induced by the laser-induced heating of the tissue below the surface are reflected back to the tissue surface.
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Citations
32 Claims
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1. A catheter for opto-acoustic tissue assessment, comprising:
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a catheter body; a tip section distal the catheter body, the tip section being adapted for irradiation and acoustic detection, wherein a tissue is heated by the irradiation to produce an acoustic wave that is detected by a acoustic detector mounted on the tip section and the acoustic detector generates a signal representative of a tissue characteristic. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 19)
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9. A method of assessing tissue with laser optoacoustic imaging, comprising:
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irradiating tissue from a distal end of a catheter to heat said tissue for producing an acoustic wave; detecting said acoustic wave with an acoustic transducer mounted on said distal end of the catheter; recording characteristics of the acoustic wave; and analyzing the acoustic wave to assess a tissue characteristic. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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20. A system for opto-acoustic tissue assessment, comprising:
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a catheter having a distal tip section configured for irradiation and acoustic detection, wherein a tissue is heated by the irradiation to produce an acoustic wave that is detected by a acoustic detector mounted on the tip section and the acoustic detector generates a signal representative of a tissue characteristic; an electronic scope receiving the signal to record a temporal profile of the acoustic wave; and a processor to reconstruct an image or profile of the tissue based on the temporal profile. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27)
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28. A system for opto-acoustic assessment of cardiac tissue, comprising:
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an ablation element configured to ablate the tissue; laser delivery means for heating the tissue to produce an acoustic wave; acoustic sensor configured to detect the acoustic wave and generating a signal representative of a tissue characteristic. - View Dependent Claims (29, 30, 31, 32)
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Specification