Flexible imaging assembly for intraluminal imaging and associated devices, systems, and methods
An intraluminal imaging device includes a flexible elongate member sized and shaped for insertion into a vessel of a patient, the flexible elongate member including a proximal portion and a distal portion; and an imaging assembly disposed at the distal portion of the flexible elongate member, the imaging assembly including a flex circuit disposed in a rolled configuration, the flex circuit comprising a spine member and a plurality of rib members extending from the spine member. Associated devices, systems, and methods are also provided.
1. An intraluminal imaging device, comprising:
a flexible elongate member configured for insertion into a blood vessel of a patient, the flexible elongate member including a longitudinal axis, a proximal portion 1 and a distal portion; and
an imaging assembly comprising a flex circuit disposed in a rolled configuration at the distal portion of the flexible elongate member, the flex circuit comprising:
a spine member extending along the longitudinal axis;
a plurality of rib members extending from the spine member and transverse to the longitudinal axis, wherein the plurality of rib members are spaced apart from one another along the longitudinal axis such that the imaging assembly is configured to flex between the plurality of rib members; and
a plurality of conductive traces different than the spine member and the plurality of rib members.
2. The device of claim 1 , wherein:
at least one of the plurality of rib members comprises a plurality of ultrasound transducers,
at least one of the plurality of rib members comprises a plurality of controllers,
the spine member comprises the plurality of conductive traces,
the plurality of conductive traces facilitate communication between the plurality of the ultrasound transducers and the plurality of controllers.
3. The device of claim 2 , wherein a proximal-most rib member and a distal-most rib member of the plurality of rib members comprises a plurality of ultrasound transducers.
4. The device of claim 2 , wherein a central rib member of the plurality of rib members comprises a plurality of ultrasound transducers.
5. The device of claim 2 , wherein the plurality of rib members comprises five rib members.
6. The device of claim 2 , wherein different ones of the plurality of rib members of the flex circuit comprise different types of ultrasound transducers.
7. The device of claim 1 , wherein the plurality of rib members extend around the longitudinal axis of the imaging assembly.
8. The device of claim 1 , wherein the spine member comprises a polymer material that is continuous along the longitudinal axis.
9. The device of claim 8 , wherein the plurality of rib members are spaced apart from one another by gaps in the polymer material.
10. The device of claim 9 , wherein the plurality of conductive traces are spaced apart from one another by portions of the polymer material.