Pico machine hand tool

Abstract

The utility model discloses a picosecond machine hand tool, including light beam shaping module, light beam shaping module will receive big facula light beam shaping as small facula light beam, be arranged in the output of light beam shaping module's resonant cavity, and be arranged in the movable focusing mirror module of resonant cavity output, and 45 degree full reflection mirror is arranged between resonant cavity and movable focusing mirror module, and input mirror, working medium, output mirror are arranged according to light path in resonant cavity, and input mirror selects the input mirror of different membrane system, and output mirror selects the output mirror of different membrane system corresponding with input mirror, and working medium selects the dye body of titanium-doped sapphire or dye as working medium according to the membrane system of input mirror and output mirror selection, the utility model discloses picosecond machine hand tool through replacing different components to convert original wavelength laser into the output light of different wavelength, and the hand tool structure is small, and the cost is low, and can output the laser of different wavelength to different diseases.

Description

Technical Field

[0001] This utility model relates to the field of laser handpiece technology, and in particular to a picosecond laser handpiece. Background Technology

[0002] Currently, most picosecond laser machines use initial laser wavelengths of 1064nm or 532nm, which limits their clinical application. Picosecond laser technology uses photomechanical effects ("photovibration effect") generated by ultrashort pulses (on the order of 10-12 seconds) to pulverize pigment particles into fine dust, significantly improving metabolic efficiency while reducing the risk of thermal damage. It has become a core treatment for pigmentary disorders (such as age spots and tattoos) and vascular lesions. However, current mainstream clinical equipment is limited by fixed wavelength designs, mainly relying on two initial wavelengths: 1064nm and 532nm. This presents significant limitations in selectivity, treatment efficiency, and safety for complex pigment targets, necessitating solutions with greater wavelength scalability. The 585nm wavelength is particularly effective for treating blue tattoos and vascular diseases such as hemangiomas; 650nm is effective for removing green tattoos; and 730nm has even more significant effects on skin problems such as black tattoos and freckles, as it can break down target pigments into smaller particles than before, targeting pigments more precisely and better addressing pigmentation issues for Asians while reducing inflammatory hyperpigmentation. The aforementioned 585nm / 650nm handpieces have been implemented in some devices, targeting vascular lesions (hemangiomas) and green tattoos respectively. However, they rely on external amplification modules, resulting in low integration and high costs. As for 730nm handpieces, due to the lack of suitable optical path design, the development of handpieces in this relevant wavelength band is still blank.

[0003] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop a universal hand tool structure with high integration and replaceable key components. Utility Model Content

[0004] The purpose of this invention is to provide a picosecond laser handpiece that can convert the original wavelength laser into output light of different wavelengths by replacing different components. The handpiece is small in size, low in cost, and can output lasers of different wavelengths for different diseases.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] This utility model discloses a picosecond laser machine handpiece, which includes:

[0007] A beam shaping module that shapes a large spot beam into a small spot beam.

[0008] A resonant cavity arranged at the output end of the beam shaping module; and

[0009] A movable focusing mirror module is arranged at the output end of the resonant cavity, and a 45° total reflection mirror is arranged between the resonant cavity and the movable focusing mirror module;

[0010] The resonant cavity is equipped with an input mirror, a working medium, and an output mirror arranged according to the optical path.

[0011] The input mirror is selected from input mirrors with different film systems;

[0012] The output mirror is selected from output mirrors with different film systems corresponding to the input mirror;

[0013] The working medium is selected from the film systems chosen by the input mirror and the output mirror, using either titanium-doped sapphire or dye body as the working medium.

[0014] Furthermore, by changing the input mirror of different film systems, the output mirror of different film systems, and different working media, this handpiece can output lasers with wavelengths of 585nm, 650nm, or 730nm.

[0015] When the handpiece outputs 730nm laser, a quarter-wave plate module is also provided at the laser incident end of the handpiece.

[0016] Furthermore, the input mirror is coated with a 532nm anti-reflection film at both ends, and the end of the input mirror facing the working medium is also coated with a 585nm total reflection film, a 650nm total reflection film, or a 730nm total reflection film.

[0017] The output mirror is coated with a 532nm anti-reflection film at both ends, and the end of the output mirror facing the working medium is also coated with a 585nm semi-reflective film, a 650nm semi-reflective film, or a 730nm semi-reflective film, while the other end is coated with a 585nm high-transmittance film, a 650nm high-transmittance film, or a 730nm high-transmittance film.

[0018] When the handpiece outputs a 585nm laser, the input mirror is coated with a 532nm anti-reflection film at both ends and a 585nm total reflection film at the end facing the working medium. The output mirror is coated with a 532nm anti-reflection film at both ends, a 585nm semi-reflection film at the end facing the working medium, and a 585nm high-transmittance film at the other end.

[0019] When the handpiece outputs a 650nm laser, the input mirror is coated with a 532nm anti-reflection film at both ends and a 650nm total reflection film at the end facing the working medium. The output mirror is coated with a 532nm anti-reflection film at both ends, a 650nm semi-reflection film at the end facing the working medium, and a 650nm high-transmittance film at the other end.

[0020] When the handpiece outputs a 730nm laser, the input mirror has a 532nm anti-reflection coating at both ends and a 730nm total reflection coating at the end facing the working medium. The output mirror has a 532nm anti-reflection coating at both ends, a 730nm semi-reflection coating at the end facing the working medium, and a 730nm high-transmittance coating at the other end.

[0021] When the handpiece outputs a 730nm laser, the working medium is 730nm titanium-doped sapphire, and the 730nm titanium-doped sapphire is coated with a 532nm antireflection film.

[0022] When the handpiece outputs a 585nm laser, the working medium is a 585nm dye body;

[0023] When the handpiece outputs a 650nm laser, the working medium is a 650nm dye body.

[0024] Furthermore, a quarter-wave plate is provided inside the quarter-wave plate module, and the quarter-wave plate receives the 532nm parallel laser light output from the picosecond machine.

[0025] Furthermore, the beam shaping module is arranged with a shaping module biconvex lens and a shaping module biconcave lens in sequence along the optical path.

[0026] Furthermore, the input mirror is mounted at one end of the resonant cavity via a gasket and a large O-ring, and the output mirror is mounted at the other end of the resonant cavity via a gasket and a large O-ring;

[0027] A small O-ring is installed between the working medium and the resonant cavity.

[0028] Furthermore, the 45° total reflection mirror is coated with a 532nm total reflection film;

[0029] When the handpiece outputs a 585nm laser, the 45° total reflection mirror is also coated with a 585nm anti-reflection film.

[0030] When the handpiece outputs a 650nm laser, the 45° total reflection mirror is also coated with a 650nm anti-reflection film.

[0031] When the handpiece outputs a 730nm laser, the 45° total reflection mirror is also coated with a 730nm antireflection film.

[0032] Furthermore, the movable focusing lens module is equipped with a dual convex lens.

[0033] When the handpiece outputs a 585nm laser, the focusing lens module's biconvex lens is coated with a 585nm anti-reflection film.

[0034] When the handpiece outputs a 650nm laser, the focusing lens module's biconvex lens is coated with a 650nm anti-reflection film.

[0035] When the handpiece outputs a 730nm laser, the focusing lens module's biconvex lens is coated with a 730nm anti-reflection film.

[0036] In the above technical solution, the picosecond laser handpiece provided by this utility model has the following beneficial effects:

[0037] This invention relates to a picosecond laser handpiece that converts the original wavelength laser into output light of different wavelengths by replacing different components. The handpiece is small in size, low in cost, and can output laser light of different wavelengths for different diseases. Attached Figure Description

[0038] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0039] Figure 1 This is a schematic diagram of the structure of a picosecond laser handpiece provided in an embodiment of the present utility model.

[0040] Explanation of reference numerals in the attached figures:

[0041] 1. Quarter-wave plate module; 2. Beam shaping module; 3. Resonant cavity; 4. Gasket; 5. Large O-ring; 6. Small O-ring; 7. Movable focusing lens module; 8. Quarter-wave plate; 9. Shaping module biconvex lens; 10. Shaping module biconcave lens; 11. Input mirror; 12. Working medium; 13. Output mirror; 14. 45° total reflection mirror; 15. Focusing lens module biconvex lens. Detailed Implementation

[0042] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0043] See Figure 1 As shown;

[0044] This embodiment discloses a picosecond laser machine handpiece, which includes:

[0045] Beam shaping module 2 shapes the received large spot beam into a small spot beam;

[0046] The resonant cavity 3 is arranged at the output end of the beam shaping module 2; and

[0047] A movable focusing mirror module 7 is arranged at the output end of the resonant cavity 3, and a 45° total reflection mirror 14 is arranged between the resonant cavity 3 and the movable focusing mirror module 7.

[0048] An input mirror 11, a working medium 12, and an output mirror 13 are arranged in accordance with the optical path inside the resonant cavity 3.

[0049] In this embodiment, the input mirror 11 is selected from input mirrors with different film systems; the output mirror 13 is selected from output mirrors with different film systems corresponding to the input mirror 11.

[0050] The working medium 12 is selected from the film system chosen by the input mirror 11 and the output mirror 13, using either titanium-doped sapphire or dye body as the working medium 12.

[0051] Specifically, this embodiment discloses a handpiece that can convert the 532nm laser output from a picosecond laser into an output laser of the required wavelength. This embodiment mainly achieves the conversion of the 532nm laser by replacing the input mirror 11 with different film systems, the output mirror 13 with different film systems, and the corresponding working medium 12, so that it can output the corresponding wavelength of the laser. This structure is novel and simple, small in size, low in cost, and meets the needs of different clinical treatment applications.

[0052] As a preferred embodiment, the handpiece of this embodiment can output laser with a wavelength of 585nm, 650nm, or 730nm by changing the input mirror 11 with different film systems, the output mirror 13 with different film systems, and the working medium 12.

[0053] When the handpiece outputs 730nm laser, a quarter-wave plate module 1 is also provided at the laser input end of the handpiece.

[0054] The main concept of this embodiment is to design a handpiece capable of outputting 585nm, 650nm, and 730nm wavelength lasers. The 585nm wavelength laser is effective in treating blue tattoos and vascular conditions such as hemangiomas; the 650nm wavelength laser is highly effective in removing green tattoos; and the 730nm wavelength laser has significant effects on skin problems such as black tattoos and freckles. It can break down the target pigment into smaller particles than before, targeting the pigment more precisely and better addressing pigmentation issues for Asians, while also reducing the occurrence of inflammatory hyperpigmentation.

[0055] In this embodiment, when the handpiece outputs a 730nm wavelength laser, a quarter-wave plate module 1 is required at the laser input end; the quarter-wave plate module 1 is not required for outputting lasers at other wavelengths.

[0056] The quarter-wave plate module 1 in this embodiment is mainly used to adjust the polarization state of the incident light plate. When the working medium 12 (gain medium) is titanium-doped sapphire, the polarization state of the pump light can be adjusted.

[0057] Preferably, in this embodiment, the input mirror 11 is coated with a 532nm anti-reflection film at both ends, and the end of the input mirror 11 facing the working medium 12 is also coated with a 585nm total reflection film, a 650nm total reflection film, or a 730nm total reflection film.

[0058] Both ends of the output mirror 13 are coated with a 532nm anti-reflection film, and the end of the output mirror 13 facing the working medium 12 is also coated with a 585nm semi-reflective film, a 650nm semi-reflective film, or a 730nm semi-reflective film, while the other end is coated with a 585nm high-transmittance film, a 650nm high-transmittance film, or a 730nm high-transmittance film.

[0059] When the handpiece outputs a 585nm laser, the input mirror 11 is coated with a 532nm antireflection film at both ends, and a 585nm total reflection film at the end facing the working medium 12. The output mirror 13 is coated with a 532nm antireflection film at both ends, a 585nm semi-reflection film at the end facing the working medium 12, and a 585nm high-transmittance film at the other end.

[0060] When the handpiece outputs a 650nm laser, the input mirror 11 is coated with a 532nm anti-reflection film at both ends, and a 650nm total reflection film at the end facing the working medium 12. The output mirror 13 is coated with a 532nm anti-reflection film at both ends, a 650nm semi-reflection film at the end facing the working medium 12, and a 650nm high-transmittance film at the other end.

[0061] When the handpiece outputs a 730nm laser, the input mirror 11 is coated with a 532nm antireflection film at both ends, and a 730nm total reflection film at the end facing the working medium 12. The output mirror 13 is coated with a 532nm antireflection film at both ends, a 730nm semi-reflection film at the end facing the working medium 12, and a 730nm high-transmittance film at the other end.

[0062] Based on the different film systems of the input mirror 11 and the output mirror 13 described above, this embodiment further limits the selection of the working medium 12, specifically as follows:

[0063] When the handpiece outputs a 730nm laser, the working medium 12 is selected as 730nm titanium-doped sapphire, and the 730nm titanium-doped sapphire is coated with a 532nm antireflection film with a doping concentration of 0.05% to 0.3%.

[0064] When the handpiece outputs a 585nm laser, the working medium 12 is selected as a 585nm dye body. Specifically, the 585nm dye body mentioned in this embodiment is: the dye body is mainly a mixture including Rh6G or Perylene Orange or PM597 dye.

[0065] When the handpiece outputs a 650nm laser, the working medium 12 is selected as a 650nm dye body. Specifically, the 650nm dye body mentioned in this embodiment is a mixture of dyes including DCM or LDS series dyes.

[0066] The dye body involved in this embodiment is a dye body doped with PM, rhodamine, etc. in a polymer matrix.

[0067] Preferably, in this embodiment, a quarter-wave plate 8 is provided inside the quarter-wave plate module 1, and the quarter-wave plate 8 receives the 532nm parallel laser light output by the picosecond machine.

[0068] Preferably, in this embodiment, the beam shaping module 2 is arranged with a shaping module biconvex lens 9 and a shaping module biconcave lens 10 along the optical path.

[0069] Preferably, in this embodiment, an input mirror 11 is installed at one end of the resonant cavity 3 via a gasket 4 and a large O-ring 5, and an output mirror 13 is installed at the other end of the resonant cavity 3 via a gasket 4 and a large O-ring 5; a small O-ring 6 is installed between the working medium 23 and the resonant cavity 3.

[0070] Preferably, the 45° total reflection mirror 14 in this embodiment is coated with a 532nm total reflection film;

[0071] When the handpiece outputs a 585nm laser, the 45° total reflection mirror 14 is also coated with a 585nm anti-reflection film.

[0072] When the handpiece outputs a 650nm laser, the 45° total reflection mirror 14 is also coated with a 650nm anti-reflection film.

[0073] When the handpiece outputs a 730nm laser, the 45° total reflection mirror 14 is also coated with a 730nm antireflection film.

[0074] Preferably, the movable focusing lens module 7 of this embodiment is provided with a focusing lens module biconvex lens 15;

[0075] When the handpiece outputs a 585nm laser wavelength, the focusing lens module's biconvex lens 15 is coated with a 585nm anti-reflection film.

[0076] When the handpiece outputs a 650nm laser wavelength, the focusing lens module's biconvex lens 15 is coated with a 650nm anti-reflection film.

[0077] When the handpiece outputs a 730nm laser wavelength, the focusing lens module's biconvex lens 15 is coated with a 730nm anti-reflection film. The movable focusing lens module 7 is universally applicable across the three output wavelength operating modes, with both ends of the internal biconvex lens 15 coated with 585nm / 650nm / 730nm high-transmittance films.

[0078] In this embodiment, the focusing lens module biconvex lens 15 can slightly change the size of the light spot at the light output port by moving the telephoto lens.

[0079] Example 1:

[0080] When the handheld device outputs a 730nm wavelength laser, the picosecond laser outputting a 532nm wavelength laser is parallel light with circular polarization. First, it passes through a quarter-wave plate 8 to make it linearly polarized. Through the design of the mechanical structure, the quarter-wave plate 8 can be rotated to make the linear polarization direction parallel to the C-axis of the subsequent titanium-doped sapphire. The beam then passes through beam shaping module 2, compressing the spot size before entering the resonant cavity 3. Input mirror 11 has high transmittance for 532nm pump light. Titanium-doped sapphire, as the working medium, has a high absorption coefficient for linearly polarized light parallel to its C-axis. After absorbing the 532nm laser energy output from the picosecond laser, it forms a reversed particle beam. The spontaneously radiated light then oscillates between input mirror 11 and output mirror 13, and stimulated emission occurs when passing through titanium-doped sapphire working medium 12. Due to the film system of input mirror 11 and output mirror 13, the 730nm wavelength light can be retained and amplified through multiple oscillations. When a certain value is reached, the laser is output from output mirror 13. The remaining wavelength light is filtered out by 45° total reflection mirror 14. Finally, by mechanically adjusting the front and rear distance of the biconvex mirrors, the desired spot size can be obtained on the surface of output mirror 13.

[0081] Example 2:

[0082] When a handheld device outputs a 585nm or 650nm wavelength laser, the 532nm laser output from the picosecond laser is parallel light. After passing through the beam shaping module 2 to compress the spot size, it is incident on the resonant cavity 3. The input mirror 11 has high transmittance for the 532nm pump light. The 585nm or 650nm dye body serves as the working medium 12. After absorbing the energy of the 532nm laser output from the picosecond laser, it forms a reversed particle beam. Subsequently, the spontaneously radiated light oscillates between the input mirror 11 and the output mirror 13, and stimulated emission occurs when passing through the working medium of the 585nm or 650nm dye body. Due to the film system of the input mirror 11 and the output mirror 13, the light in the 585nm or 650nm band can be retained and amplified in multiple oscillations. When a certain value is reached, the laser is output from the output mirror 13. After passing through the 45° total reflection mirror 14 to filter out the remaining wavelength light, the desired spot size can be obtained at the output end face by mechanically adjusting the front and rear distance of the biconvex mirror.

[0083] In the above technical solution, the picosecond laser handpiece provided by this utility model has the following beneficial effects:

[0084] This invention relates to a picosecond laser handpiece that converts the original wavelength laser into output light of different wavelengths by replacing different components. The handpiece is small in size, low in cost, and can output laser light of different wavelengths for different diseases.

[0085] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A picosecond laser handpiece, characterized in that, The tool includes: Beam shaping module (2), which shapes the received large spot beam into a small spot beam; The resonant cavity (3) is arranged at the output end of the beam shaping module (2); and A movable focusing mirror module (7) is arranged at the output end of the resonant cavity (3), and a 45° total reflection mirror (14) is arranged between the resonant cavity (3) and the movable focusing mirror module (7); The resonant cavity (3) is equipped with an input mirror (11), a working medium (12), and an output mirror (13) arranged according to the optical path. The input mirror (11) is selected from input mirrors (11) with different film systems; The output mirror (13) is selected from the output mirror (13) with a different film system corresponding to the input mirror (11); The working medium (12) is selected from the film system chosen by the input mirror (11) and the output mirror (13) using titanium-doped sapphire or dye body as the working medium (12).

2. The picosecond laser handpiece according to claim 1, characterized in that, The handpiece can output lasers with wavelengths of 585nm, 650nm, or 730nm by changing the input mirror (11) of different membrane systems, the output mirror (13) of different membrane systems, and the working medium (12). When the handpiece outputs 730nm laser, the laser incident end of the handpiece is also provided with a quarter-wave plate module (1).

3. The picosecond laser handpiece according to claim 2, characterized in that, The input mirror (11) is coated with a 532nm anti-reflection film at both ends, and the end of the input mirror (11) facing the working medium (12) is also coated with a 585nm total reflection film, a 650nm total reflection film, or a 730nm total reflection film. The output mirror (13) is coated with a 532nm anti-reflection film at both ends, and the end of the output mirror (13) facing the working medium (12) is also coated with a 585nm semi-reflective film, a 650nm semi-reflective film, or a 730nm semi-reflective film, and the other end is coated with a 585nm high-transmittance film, a 650nm high-transmittance film, or a 730nm high-transmittance film. When the handpiece outputs a 585nm laser, the input mirror (11) is coated with a 532nm antireflection film at both ends and a 585nm total reflection film at the end facing the working medium (12). The output mirror (13) is coated with a 532nm antireflection film at both ends and a 585nm semi-reflection film at the end facing the working medium (12). The other end is coated with a 585nm high-transmittance film. When the handpiece outputs a 650nm laser, the input mirror (11) is coated with a 532nm anti-reflection film at both ends and a 650nm total reflection film at the end facing the working medium (12). The output mirror (13) is coated with a 532nm anti-reflection film at both ends, a 650nm semi-reflection film at the end facing the working medium (12), and a 650nm high-transmittance film at the other end. When the handpiece outputs a 730nm laser, the input mirror (11) has a 532nm antireflection coating at both ends and a 730nm total reflection coating at the end facing the working medium (12). The output mirror (13) has a 532nm antireflection coating at both ends, a 730nm semi-reflection coating at the end facing the working medium (12), and a 730nm high transmittance coating at the other end.

4. The picosecond laser handpiece according to claim 3, characterized in that: When the handpiece outputs a 730nm laser, the working medium (12) is selected as 730nm titanium-doped sapphire, and the 730nm titanium-doped sapphire is coated with a 532nm anti-reflection film. When the handpiece outputs a 585nm laser, the working medium (12) is a 585nm dye body; When the handpiece outputs a 650nm laser, the working medium (12) is a 650nm dye body.

5. A picosecond laser handpiece according to any one of claims 2 to 4, characterized in that, The quarter-wave plate module (1) is equipped with a quarter-wave plate (8), which receives 532nm parallel laser light output from the picosecond machine.

6. The picosecond laser handpiece according to claim 5, characterized in that, The beam shaping module (2) is arranged with a shaping module biconvex lens (9) and a shaping module biconcave lens (10) in sequence along the optical path.

7. The picosecond laser handpiece according to claim 5, characterized in that, The input mirror (11) is installed at one end of the resonant cavity (3) through a gasket (4) and a large O-ring (5), and the output mirror (13) is installed at the other end of the resonant cavity (3) through a gasket (4) and a large O-ring (5). A small O-ring (6) is installed between the working medium (12) and the resonant cavity (3).

8. A picosecond laser handpiece according to claim 5, characterized in that, The 45° total reflection mirror (14) is coated with a 532nm total reflection film; When the handpiece outputs a 585nm laser, the 45° total reflection mirror (14) is also coated with a 585nm anti-reflection film. When the handpiece outputs a 650nm laser, the 45° total reflection mirror (14) is also coated with a 650nm anti-reflection film. When the handpiece outputs a 730nm laser, the 45° total reflection mirror (14) is also coated with a 730nm antireflection film.

9. A picosecond laser handpiece according to claim 5, characterized in that, The movable focusing lens module (7) is equipped with a focusing lens module biconvex lens (15); When the handpiece outputs a 585nm laser, the focusing lens module's biconvex lens (15) is coated with a 585nm anti-reflection film. When the handpiece outputs a 650nm laser, the focusing lens module's biconvex lens (15) is coated with a 650nm anti-reflection film. When the handpiece outputs a 730nm laser, the focusing lens module biconvex lens (15) is coated with a 730nm anti-reflection film.

Images