ERCP-based light irradiation device for photodynamic therapy

Abstract

The invention discloses an ERCP-based light irradiation device for photodynamic therapy. The device comprises a plurality of turntables, wherein the middle of the surface of one side of one turntableis provided with a laser, and the top of the laser is provided with a dispersion optical fiber; a first laminating film is attached to the outer side face of an irradiation end, the end part of the dispersion optical fiber is wrapped in the first laminating film and bonded with a second laminating film, and one end of a thin conduit is positioned between the second laminating film and the second laminating film. The device is scientific and reasonable in structure and safe and convenient to use; water is circularly conveyed between the first laminating film and the second laminating film through the thin conduit; thermal induction generated at an irradiation part is reduced through flowing of the water, and the irrigation end is tightly wrapped in the first laminating film because of the water. The second adhering film is attached to a lesion inside the bile duct, so that the refraction loss of light rays due to unevenness and mucus inside the bile duct is reduced, the photodynamic treatment efficiency is improved, the operation time is shortened, and the operation success rate is increased.

Description

technical field [0001] The invention relates to the technical field of photodynamic therapy, in particular to an ERCP-based light irradiation device for photodynamic therapy. Background technique [0002] Photodynamic therapy (PDT) is a new method of treating tumor diseases with photosensitizing drugs and laser activation. Irradiating tumor sites with specific wavelengths can activate photosensitizing drugs selectively gathered in tumor tissues, triggering photochemical reactions to destroy tumors. During the treatment of cancer, the position and length of the stenosis were confirmed by ERCP. After the bile duct was cleaned, the laser fiber was successfully placed in the precise position along the plastic sheath. The sufficient irradiation time was ensured by adjusting the laser parameters, and the sufficient irradiation time was ensured by adjusting the fine position. The irradiated area, in which ERCP technology is also called endoscopic retrograde cholangiopancreatography...

AI Technical Summary

Problems solved by technology

[0004] The present invention provides a technical solution, which can effectively solve the disadvantages of common photodynamic therapy in the conventional photodynamic therapy, that is, the irradiated part of the bile duct It is easy to feel heat, and the bile duct is uneven and adhered with mucus, which may easily cause reflection at the irradiated end during irradiation, consume laser energy, and then require a long time to complete the treatment, resulting in longer operation time and increased surgical risk. The problem

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