Apparatus and method for performing thermal and laser doppler velocimetry measurements
First Claim
Patent Images
1. A therapeutic medical device for performing thermal and laser Doppler velocimetry measurements comprising:
- an elongated member;
at least a first optical fiber longitudinally disposed through the elongated member to perform a laser Doppler velocimetry measurement of a fluid within the body lumen; and
at least a second optical fiber longitudinally disposed through the elongated member to perform a temperature measurement within the body lumen.
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Abstract
A therapeutic intravascular device and method for performing thermal and laser Doppler velocimetry measurements. In one embodiment, the therapeutic intravascular device includes an elongated member having first and second optical fibers longitudinally disposed therethrough, the first optical fiber for performing a laser Doppler velocity measurement of a fluid within a body lumen, the second optical fiber for performing a temperature measurement within the body lumen.
191 Citations
27 Claims
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1. A therapeutic medical device for performing thermal and laser Doppler velocimetry measurements comprising:
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an elongated member;
at least a first optical fiber longitudinally disposed through the elongated member to perform a laser Doppler velocimetry measurement of a fluid within the body lumen; and
at least a second optical fiber longitudinally disposed through the elongated member to perform a temperature measurement within the body lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A catheter for performing thermal and laser Doppler velocimetry measurements, the catheter comprising:
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an elongated shaft comprising a tubular inner member having a first lumen therethrough and an outer member disposed about the tubular inner member; and
first and second optical fibers longitudinally disposed through the first lumen of the tubular inner member, the first optical fiber to perform a laser Doppler velocimetry measurement of a fluid within a body lumen, the second optical fiber to perform a temperature measurement within the body lumen. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15)
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16. A guidewire for performing thermal and laser Doppler velocimetry measurements comprising:
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an elongated guidewire body comprising a distal core section axially coupled to a proximal core section, the elongated guidewire body having a lumen therethrough;
an atraumatic distal tip formed at a distal end of the distal core section;
at least a first optical fiber longitudinally disposed through the elongated guidewire body to perform a laser Doppler velocimetry measurement of a fluid within a body lumen; and
at least a second optical fiber longitudinally disposed through the elongated guidewire body to perform a temperature measurement within the body lumen. - View Dependent Claims (17, 18)
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19. A guidewire for performing thermal and laser Doppler velocimetry measurements comprising:
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an elongated guidewire body comprising a distal core section axially coupled to a proximal core section, the elongated guidewire body having a lumen therethrough;
an atraumatic distal tip formed at a distal end of the distal core section;
at least a first optical fiber longitudinally disposed through the elongated guidewire body to perform a laser Doppler velocimetry measurement of a fluid within a body lumen;
at least a second optical fiber longitudinally disposed through the elongated guidewire body to perform a temperature measurement within the body lumen; and
a connecting member coupling a distal end of the proximal core section to a proximal end of the distal core section.
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20. A guidewire for performing thermal and laser Doppler velocimetry measurements comprising:
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an elongated guidewire body comprising a distal core section axially coupled to a proximal core section, the elongated guidewire body having a lumen therethrough;
an atraumatic distal tip formed at a distal end of the distal core section;
at least a first optical fiber longitudinally disposed through the elongated guidewire body to perform a laser Doppler velocimetry measurement of a fluid within a body lumen;
at least a second optical fiber longitudinally disposed through the elongated guidewire body to perform a temperature measurement within the body lumen; and
a flexible coil disposed about the distal core section of the elongated guidewire body, the flexible coil coupled to at least one point along the distal core section.
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21. A guidewire for performing thermal and laser Doppler velocimetry measurements comprising:
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an elongated guidewire body comprising a distal core section axially coupled to a proximal core section, the elongated guidewire body having a lumen therethrough;
an atraumatic distal tip formed at a distal end of the distal core section;
at least a first optical fiber longitudinally disposed through the elongated guidewire body to perform a laser Doppler velocimetry measurement of a fluid within a body lumen;
at least a second optical fiber longitudinally disposed through the elongated guidewire body to perform a temperature measurement within the body lumen; and
a shaping ribbon coupled to the distal core section.
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22. A system for performing thermal and laser Doppler velocimetry measurements, the system comprising:
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a laser Doppler velocimetry apparatus comprising a laser light source and an LDV detector coupled to a data processing system;
an optical detector coupled to the data processing system; and
a catheter coupled to the laser Doppler velocimetry apparatus and the optical detector, the catheter comprising an elongated shaft comprising a tubular inner member having a first lumen therethrough and an outer member disposed about the tubular inner member;
the catheter further comprising first and second optical fibers longitudinally disposed through the first lumen of the tubular inner member, the first optical fiber to perform a laser Doppler velocimetry measurement of a fluid within a body lumen, the second optical fiber to perform a temperature measurement within the body lumen.- View Dependent Claims (23)
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24. A method for performing thermal and laser Doppler velocimetry measurements, the method comprising:
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inserting a therapeutic medical device into a vasculature of a patient, the therapeutic medical device comprising an elongated member having first and second optical fibers longitudinally disposed therethrough, the first optical fiber to perform a laser Doppler velocimetry measurement of a fluid within a body lumen, the second optical fiber to perform a temperature measurement within the body lumen;
advancing the therapeutic medical device to a location in the vasculature;
operating a data processing system coupled to the therapeutic medical device to transmit a plurality of light radiation signals to the location in the vasculature and a plurality of reflected light radiation signals to a detector in the data processing system; and
processing the plurality of reflected light radiation signals to perform thermal and laser Doppler velocimetry measurements. - View Dependent Claims (25, 26)
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27. A catheter for performing thermal and laser Doppler velocimetry measurements, the catheter comprising:
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an elongated shaft comprising a tubular inner member having first and second lumens therethrough and an outer member disposed about the tubular inner member, the second lumen being selected from the group consisting of guidewire lumen, inflation lumen, radiation source lumen, drug delivery lumen, atherectomy device lumen and laparoscopy lumen;
at least a first optical fiber longitudinally disposed through the first lumen of the tubular inner member, the first optical fiber having a proximal end coupled to a laser Doppler velocimetry apparatus and a distal end exposed to a vasculature of a patient; and
at least a second optical fiber longitudinally disposed through the first lumen of the tubular inner member, the second optical fiber having a proximal end coupled to an optical detector and a distal end having a Bragg diffraction grating formed thereon.
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Specification