The invention relates to the technical field of
medical instruments, and discloses a photoacoustic
endoscopic imaging device and a photoacoustic
endoscopic imaging method based on the same. The photoacoustic
endoscopic imaging device comprises a first shell, an off-axis mirror, an ultrasonic
transducer, a supporting piece and an
optical fiber; the supporting piece is arranged on the first end of the first shell, the off-axis mirror is arranged on the second end of the first shell, and a
signal window is formed in the wall face of the first shell; the
optical fiber is installed on the supporting piece; the supporting piece is provided with an
transducer installation groove, and the ultrasonic
transducer is arranged in the transducer installation groove. By utilizing the natural
advantage ofthe reflective focusing imaging
system without
chromatic aberration, the problem that the focus of a
light beam deviates under different wavelengths is solved, and the resolution of photoacoustic imaging is improved, so that a more accurate functional information resolving result can be obtained; the device integrates
light beam reflection and focusing functions into one element, the size of thefront end of the probe can be remarkably reduced, and the moving posture flexibility of the imaging
catheter is improved.