Electro-optical q-switch dual-frequency dual-pulse laser lithotripsy system

A double-pulse, electro-optic technology, applied to lasers, laser components, circuits, etc., can solve the problems of low electro-optic efficiency, high electro-optic efficiency, and high loss of the whole machine, and achieve good gravel effect, high photon energy, and simple structure Effect

CN109512576BActive Publication Date: 2019-12-13吉林省科英医疗激光有限责任公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
Publication Date
2019-12-13

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Abstract

The electro-optical Q-switch dual-frequency dual-pulse laser lithotripsy system involves the technical field of light-based medical devices, and solves the problem of lack of a laser lithotripsy system that can safely pulverize stones of different sizes, has high electro-optical efficiency, and is easy to change the pulse width. The system includes a total reflection mirror , electro-optic Q-switching switch assembly, drive circuit, controller, pump source, gain medium, output mirror, first focusing mirror, frequency doubling crystal, second focusing mirror, coupling lens and output fiber; electro-optic Q-switching switch assembly and gain The medium is located between the total reflection mirror and the output mirror; the controller controls the operation of the pump source, and controls the voltage on the electro-optic Q-switching switch component through the control drive circuit, so that the system outputs a dual-frequency pulse width of 1μs-1.5μs or 200μs-300μs laser beam. The invention can pulverize large calculi, can also realize soft tissue cutting around the calculus, has high electro-optical efficiency and is easy to change the pulse width, and is suitable for clinical use.
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Description

technical field

[0001] The invention relates to the technical field of light-based medical devices, in particular to an electro-optic Q-switch dual-frequency dual-pulse laser lithotripsy system. Background technique

[0002] In order to crush the stones in the digestive system and urinary system, humans have invented various methods such as extracorporeal shock wave lithotripsy, electrohydraulic lithotripsy, ultrasonic lithotripsy, and laser lithotripsy. Because laser lithotripsy has many inherent advantages, in addition to the first choice of extracorporeal shock wave for kidney stones, other methods are basically replaced by laser lithotripsy. In laser lithotripsy, Ho:Cr:Tm:YAG 2.1 micron static laser and Nd:YAG 1.064+0.532 micron dual-frequency double-pulse Q-switched laser are currently used clinically. The former has been produced by several domestic units, while the latter is only produced by WOM in Germany, and my country needs to import many units every year. [00...

Examples

Embodiment Construction

[0025] In order to understand the above-mentioned purpose, features and advantages of the present invention more clearly, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0026] In the following description, many specific details are set forth in order to fully understand the present invention. However, the present invention can also be implemented in other ways different from those described here. Therefore, the protection scope of the present invention is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

[0027] An electro-optic Q-switch dual-frequency dual-pulse laser lithotripsy system, including a total reflection mirror 1, an electro-optic Q-switching switch assembly, a drive circuit 4, a controller 14, a pump source 13, a gain medium, an output mirror 7, a first focusing mirror 8, Frequency doubling crystal 12 , second focusing mirror 9 , coupling lens 10 an...