Flexible ultrasound transducer and method for manufacturing the same
A flexible ultrasound transducer according to an embodiment of the present disclosure includes a substrate having a central part and a plurality of extended parts extending from the central part; an ultrasound probe disposed at the central part of the substrate to acquire an ultrasound image of a region of interest; and a focused ultrasound output unit disposed at the extended parts of the substrate to output a focused ultrasound to the region of interest, wherein the focused ultrasound output unit disposed at the extended parts of the substrate has a flexible property and is deformable. According to the structure of an embodiment, it is possible to simultaneously achieve ultrasound imaging and ultrasonic therapy such as lesion stimulation or removal through focused ultrasound, and adjust the focal position of focused ultrasound or improve the focal sensitivity through flexible movement.
1. A flexible ultrasound transducer, comprising:
a substrate having a central part and a plurality of extended parts extending from the central part;
an ultrasound probe disposed at the central part of the substrate to acquire an ultrasound image of a region of interest, wherein the ultrasound probe includes a circular array of imaging ultrasound output elements configured to output an imaging ultrasound toward the region of interest; and
a plurality of focused ultrasound output units disposed at the plurality of extended parts of the substrate to output a focused ultrasound to the region of interest, wherein the focused ultrasound output units include an array of focused ultrasound output elements, a plurality of trench structures each of which is formed between the focused ultrasound output elements, and a flexible material disposed in the plurality of trench structures and that covers the plurality of trench structures and the array of focused ultrasound output elements,
wherein each of the plurality of extended parts includes a reinforcing layer disposed on an opposing side of the substrate from the plurality of focused ultrasound output units, the reinforcing layer being a material having a larger thermal expansion coefficient than the flexible material;
wherein the extended parts of the substrate and the focused ultrasound output units are flexible and deformable.
2. The flexible ultrasound transducer according to claim 1 , wherein the array of focused ultrasound output elements are configured to output a focused ultrasound for treatment to the region of interest.
3. The flexible ultrasound transducer according to claim 2 , wherein the focused ultrasound for treatment is Low-intensity Focused Ultrasound for stimulating the region of interest with low intensity or High-intensity Focused Ultrasound for removing a lesion in the region of interest.
4. The flexible ultrasound transducer according to claim 1 , wherein the ultrasound probe or the focused ultrasound output units include an ultrasound output element which is a micromachined ultrasound transducer (MUT).