5 results about "Photoablation" patented technology

The utility model provides a laser ablation device which comprises a first laser light source used for emitting treatment laser; the optical splitter is arranged at the output end of the first laser light source and is used for splitting the treatment laser into multiple paths of split laser; wherein the branch lasers are arranged in rows and columns; the optical modulator is arranged at the output end of the optical splitter and is used for performing independent power regulation and control on each branch laser; the optical fiber coupler is arranged at the output end of the optical modulator and is used for coupling the branch lasers into the optical fiber branches of the optical fiber array one by one; the optical fiber array is connected between the optical fiber coupler and the focusing micro-lens array, and each optical fiber branch corresponds to one focusing micro-lens of the focusing micro-lens array; and the focusing microlens array is used for focusing the split laser onto the diseased tissue in space through focusing microlenses for ablation treatment. The technical scheme can be used for ablation treatment of various irregular pathological tissues, and damage to surrounding healthy tissues is avoided.

The application provides a laser ablation assembly, comprising an ablation optical fiber and a cooling sleeve; the ablation optical fiber comprises a light-guiding optical fiber and an ablation tip; the cooling sleeve comprises a base, an inner tube and an outer tube, two communication structures are arranged in the base; a first support structure is arranged between the outer tube and the inner tube, a second support structure is arranged on the inner side of the inner tube, the distal end of the outer tube is a blind end, a space between the outer tube and the inner tube forms a first channel, a space between the inner tube and the optical fiber forms a second channel, the first channel and the second channel are in fluid communication at the distal end; the first channel is in fluid communication with one of the communication structures at the proximal end, and the second channel is in fluid communication with the other communication structure at the proximal end.

The utility model relates to an experimental device for comparing laser ablation efficiency. The experimental device comprises a seat body, a slice placing table and a positioning mounting assembly, wherein the slice placing table is arranged on the seat body, and slice tissues are placed on the slice placing table. The positioning installation assembly comprises a positioning sleeve and a first locking piece, the positioning sleeve is used for allowing the laser optical fiber to penetrate and be installed, the first locking piece is in threaded connection with the positioning sleeve, the end of the first locking piece penetrates into the positioning sleeve, and the first locking piece is used for tightly pressing the laser optical fiber. And the positioning sleeve is positioned above the slice placing table. When the laser ablation efficiency of the kidney tissue is observed and compared, the laser fiber needs to be positioned and installed in advance. The utility model provides an experimental device for comparing laser ablation efficiency, which can be used by medical staff to perform experimental comparison on tissues so as to quantify and compare tissue damage effects of different laser technologies in lithotripsy, and is of great significance for guiding clinical practice and optimizing treatment schemes.

It provides moisture level adjustment for ophthalmic laser ablation surgery. [Solution] In a particular embodiment, the ophthalmic laser ablation system includes a laser device, a fluid removal device, and a computer. The laser device directs laser radiation towards the eye as multiple shots to cut the eye tissue according to a treatment pattern. The fluid removal device removes fluid from the surface of the eye tissue. The computer identifies a moisture retention procedure, instructs the fluid removal device to remove fluid from the surface of the tissue at a certain location in the eye according to the moisture retention procedure, and instructs the laser device to cut the tissue at that location in the eye according to the treatment pattern.

The invention provides a system and a method for ablation of dental hard tissue through adjustable annular water mist mediated laser. The system comprises a laser, a water supply system, a double-path gas supply system and a waste liquid recovery system. The nozzle is characterized by being provided with a coaxial three-layer nozzle which is composed of an outer-layer air cavity, a middle-layer water pipe and an inner-layer air cavity in sequence from outside to inside; the outer-layer air cavity and the middle-layer water pipe are sealed by a first light-transmitting window, and the middle-layer water pipe and the inner-layer air cavity are sealed by a second light-transmitting window; micro-pores are formed in the center of the first light-transmitting window; a central water hole is formed in the center of the second light-transmitting window; a laser beam sequentially penetrates through the two light-transmitting windows along the axis of the nozzle. By independently adjusting the inner-layer air pressure (0.1-1 MPa), the water pressure (0.2-1 MPa) and the outer-layer air pressure (0.05-1 MPa), annular water mist with the controllable geometric dimension can be formed at the front end of the nozzle, laser is focused in a central dry air column area to achieve high-precision ablation, and meanwhile the annular water mist cools surrounding tissues. The problems of low cooling efficiency, large laser scattering loss and deep heat damage in existing water mist-assisted laser ablation are solved, and the water mist-assisted laser ablation device is suitable for dental minimally invasive surgeries such as decayed tooth hole preparation and root canal cleaning.