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Photoacoustic endoscopic imaging device and photoacoustic endoscopic imaging method based on same

An imaging device and photoacoustic technology, applied in the field of medical devices, can solve problems such as wavelength changes, and achieve the effect of reducing size, improving flexibility, and expanding application fields

Active Publication Date: 2021-03-16
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0012] The object of the present invention is to provide a photoacoustic endoscopic imaging device and a photoacoustic endoscopic imaging method based on the device, aiming to solve the problem in the prior art that the focus position of the focused light beam with a lens changes with the wavelength.

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Embodiment Construction

[0037] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0038] The implementation of the present invention will be described in detail below in conjunction with specific embodiments.

[0039] In the drawings of this embodiment, the same or similar symbols correspond to the same or similar components; The indicated orientation or positional relationship is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred device or element must have a specific orientation, or in a specific orien...

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Abstract

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.

Description

technical field [0001] The patent of the present invention relates to the technical field of medical devices, in particular, to a photoacoustic endoscopic imaging device and a photoacoustic endoscopic imaging method based on the device. Background technique [0002] The incidence of cancer in my country has continued to increase in recent years, and early detection and treatment can significantly improve the survival rate of patients. Endoscope is a common optical instrument for tumor diagnosis because of its non-invasive inspection operation. Photoacoustic Imaging (PAI) is a new non-invasive and non-ionizing biomedical imaging method developed in recent years. [0003] The basic principle of photoacoustic imaging: when the pulsed laser is irradiated into the biological tissue, the light absorption domain of the biological tissue will generate an ultrasonic signal, and the ultrasonic signal generated by the light excitation is the photoacoustic signal. The photoacoustic si...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/00
CPCA61B5/0095A61B5/6852
Inventor 龚小竞解志华桂珍珍张建辉王夏天舒承有陈震林
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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