Intravascular ultrasound imaging device

Details Intravascular ultrasound imaging device Intravascular ultrasound imaging device

A - Human Necessities

61

B

A61B 8/12 (2006.01) G01H 9/00 (2006.01) G01S 15/89 (2006.01)

Patent

CA 2580710

An optic fiber adapted for ultrasound imaging of the lumen of a vessel comprising: an inner core (41) for transmitting light having an index of refraction that changes responsive to acoustic energy incident thereon; a ring core (43) concentric with the inner core for transmitting light; a cladding material (42) between the inner and ring cores that has an index of refraction smaller than the index of refraction of the material from which the inner core is formed; and at least one acoustic transducer (62) comprising absorbing material (64) formed on the surface of the ring core that absorbs optical energy transmitted along the ring core and generates ultrasound responsive thereto.

Une fibre optique prévue pour l'imagerie par ultrasons de la lumière d'un vaisseau comprend une âme interne (41) qui émet de la lumière présentant un indice de réfraction qui change en réponse à l'énergie acoustique incidente sur cette dernière ; un noyau circulaire (43) concentrique à l'âme interne pour l'émission de lumière; une matière de revêtement (42) située entre l'âme interne et le noyau circulaire qui présente un indice de réfraction inférieur à l'indice de réfraction de la matière dont est formée l'âme interne; et au moins un transducteur acoustique (62) comprenant un matériau absorbant (64) formé sur la surface du noyau circulaire, qui absorbe l'énergie optique circulant le long du noyau circulaire et qui génère des ultrasons en réponse à cela.

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