Lattice density variable laser treatment hand tool

Abstract

The utility model discloses a dot matrix density variable laser treatment hand tool, which comprises a standard mechanical interface, an interface limiting ring, a transition ring, a large sleeve and a plurality of replaceable front ends with different length specifications, the standard mechanical interface is connected with a laser transmission device, the interface limiting ring is arranged on the standard mechanical interface, and the transition ring is arranged on the large sleeve. One end of the transition ring is connected with the standard mechanical interface, the other end of the transition ring is connected with the large sleeve, the diffraction beam splitter is arranged in the large sleeve, the diffraction beam splitter is fixed in the large sleeve through an installation structure and used for dispersing laser beams into micro laser beams arranged in a dot matrix shape, and the replaceable front ends are connected with the large sleeve. Each replaceable front end comprises a focusing lens mounting cylinder and a distance gauge, and a focusing lens is mounted in the focusing lens mounting cylinder and used for adjusting the dot matrix density and the focal length of an output light beam; the dot matrix is simple in structure, different dot matrix densities can be achieved only by simply replacing the front end, and different clinical treatment requirements are met to the maximum extent.

Description

Technical Field

[0001] The utility model relates to the technical field of laser medical treatment, in particular to a laser treatment handpiece with variable dot matrix density. Background Technique

[0002] In the aspect of medical beauty, lasers mainly use light wave bands that are beneficial to the human body, have strong penetration ability, and high absorption rate by human tissues. By using the selective photothermal effect and focal photothermal effect of lasers on biological tissues, the aging and atrophic epithelial cells are removed, and the vitality of skin collagen is enhanced, so as to increase skin elasticity, delay skin aging, and achieve the effect of beauty.

[0003] The basic principle of laser treatment is to irradiate the skin, acupoints or affected areas with a laser to achieve the purpose of treating diseases. The laser treatment handpiece is a key component of laser treatment. The output of the laser needs to be transmitted to the diseased tissue through the treatment handpiece to achieve the treatment purpose. The core technologies of laser dot matrix treatment include the regulation of dot matrix density, the overall output spot size, and energy uniformity.

[0004] In the dot matrix laser technology, after the laser beam emitted by the laser passes through the treatment handpiece, the beam is converted into a micro laser beam arranged in a dot matrix, and then the dot matrix laser beam is irradiated on the treatment area. These dot matrix laser beams make fine holes on the skin and scars, so as to form a three-dimensional dot matrix gasification area in the skin and scar layers, and then cause a series of skin and scar reactions, stimulate the skin and scars to self-repair, and achieve the effects of skin tightening, skin rejuvenation, removing color spots, and improving scars. Laser dot matrix treatment is a minimally invasive treatment between invasive and non-invasive. Its clinical advantages are obvious effect, small damage, no pain, and short downtime, and it has been widely used clinically.

[0005] In the laser medical aesthetics and laser treatment industries, laser treatment devices are equipped with application handpieces of different modes. The main function of the handpiece is to provide light beams of different modes to achieve the treatment purpose for the diseased tissues of different patients, such as honeycomb lattice handpieces, microlens lattice handpieces, dot matrix scanning handpieces, etc. Such handpieces disperse and focus the large-spot parallel light beam input by the laser into multiple smaller micro-beams arranged in a dot matrix. In this way, a smaller treatment wound surface and more concentrated laser energy can be achieved. Clinically, it is necessary to select laser dot matrices with different densities and spacings according to the specific conditions of the patient to achieve the best treatment effect. The dot spacing of the existing clinically used honeycomb lattice handpiece is non-adjustable and the energy density is uneven, which affects the treatment effect; for the newly emerged adjustable dot matrix handpieces, either the adjustment structure is complex, and the dot matrix density is switched by changing the distance between the dot matrices by rotating the knob to switch the honeycomb lenses with different dot spacings. If a dot matrix with a more selectable spacing specification is desired, it will inevitably make the structure of the handpiece more complex and the external dimensions will also increase accordingly, bringing inconvenience to clinical use. On the one hand, the cost is relatively high. In addition, multiple knob adjustments will reduce the reliability of the handpiece, affecting the treatment effect. At the same time, since the treatment front end of the handpiece needs to be in contact with the treatment area of the patient, if the same handpiece front end is used by different patients, there is a risk of cross-infection. Summary of the Utility Model

[0006] Technical Objective: Aiming at the deficiencies of the existing laser treatment handpiece technology, the present utility model discloses a laser treatment handpiece with variable dot matrix density, which can switch the output of different dot matrix densities to adapt to different needs.

[0007] Technical Solution: To achieve the above technical objective, the present utility model adopts the following technical solution:

[0008] A laser treatment handpiece with variable dot matrix density includes a standard mechanical interface, an interface limit ring, a transition ring, a large sleeve, and a plurality of replaceable fronts with different length specifications. The standard mechanical interface is connected to the laser transmission device. The interface limit ring is installed on the standard mechanical interface. One end of the transition ring is connected to the standard mechanical interface, and the other end is connected to the large sleeve. A diffraction beam splitter is arranged in the large sleeve and is fixed in the large sleeve through an installation structure for dispersing the laser beam into tiny laser beams arranged in a dot matrix. A plurality of replaceable fronts are connected to the large sleeve. Each replaceable front includes a focusing lens installation cylinder and a distance gauge. A focusing lens is installed in the focusing lens installation cylinder for adjusting the dot matrix density and focal length of the output light beam.

[0009] Preferably, the installation structure includes a large pressing ring, a small sleeve, and a small pressing ring. The small sleeve is fixed in the large sleeve through the large pressing ring, and the diffraction beam splitter is fixed in the small sleeve through the small pressing ring.

[0010] Preferably, different specifications of focusing lenses and distance gauges with different lengths are installed inside the replaceable front ends with different length specifications, which are used to achieve laser output with different dot matrix densities.

[0011] Preferably, the focusing lens mounting cylinder and the distance gauge are of an integral structure.

[0012] Preferably, the diffraction beam splitting angle of the diffraction beam splitter is 2°, and the focusing lenses are respectively selected with specifications of focal lengths of 10mm, 15mm, 30mm, 40mm, and 50mm.

[0013] Preferably, the outer surface of the standard mechanical interface is provided with groove knurling for increasing friction.

[0014] Preferably, the replaceable front end is for single use.

[0015] Beneficial effects:

[0016] By replacing the replaceable front end of the laser treatment handpiece to replace different focusing lenses, the present utility model can achieve laser output with different dot matrix densities, avoiding the problem of realizing the change of dot matrix density through a complex structure or multiple adjustments in the prior art, simplifying the operation, and improving the usability.

[0017] The laser treatment handpiece of the present utility model realizes the uniform distribution of the square array light spots through the diffraction beam splitter, ensuring the uniformity of the laser energy in the treatment area. By replacing the focusing lenses with different focal lengths, it can provide a variety of dot matrix density specifications from 0.35mm to 1.75mm, suitable for different needs, meeting diverse applications. Moreover, the replaceable front end of the present utility model is for single use, enhancing the safety of the treatment. Description of the drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0019] Figure 1 It is the schematic diagram of the external structure of the variable dot matrix density laser treatment handpiece of the present utility model;

[0020] Figure 2 It is the exploded structure schematic diagram of the variable dot matrix density laser treatment handpiece of the present utility model;

[0021] Figure 3 It is the optical path diagram of the present utility model;

[0022] Figure 4 It is the laser dot matrix diagram.

[0023] In the figure: 1. Standard mechanical interface; 2. Interface limit ring; 3. Transition ring; 4. Large pressure ring; 5. Small sleeve; 6. Diffractive beam splitter; 7. Small pressure ring; 8. Large sleeve; 9. Replaceable front end. Specific implementation mode

[0024] The present utility model will be more clearly and completely described below by way of a preferred embodiment in conjunction with the accompanying drawings, but the present utility model is not limited to the scope of the described embodiment.

[0025] As Figure 1 shown, a laser treatment handpiece with variable dot matrix density includes a standard mechanical interface 1, an interface limit ring 2, a transition ring 3, a large sleeve 8 and a plurality of replaceable front ends 9 with different length specifications. The standard mechanical interface 1 adopts a threaded connection form, and its external dimension is M22×1.5. The standard mechanical interface 1 is connected to a laser transmission device, such as a light guide arm, through its threaded part. The interface limit ring 2 is installed at the front end of the standard mechanical interface 1. When the thread of the standard mechanical interface 1 is rotated to the limit position when connected to the laser transmission device, the interface limit ring 2 will provide physical blockage, reminding the operator that the connection is in place and preventing over-rotation from causing thread wear or loose connection. The transition ring 3 is located between the standard mechanical interface 1 and the large sleeve 8. One end of the transition ring 3 is connected to the standard mechanical interface 1, and the other end is connected to the large sleeve 8, playing a role of connection and transition, and hiding the connection at the interface, making the appearance of the laser treatment handpiece more beautiful and streamlined.

[0026] As Figure 2 shown, the large sleeve 8 is the main body part of the laser treatment handpiece. A diffractive beam splitter 6 is arranged in the large sleeve 8. The diffractive beam splitter 6 adopts a honeycomb lens. The diffractive beam splitter 6 is fixed in the large sleeve 8 through an installation structure. The installation structure includes a large pressure ring 4, a small sleeve 5 and a small pressure ring 7. The small sleeve 5 is fixed in the large sleeve 8 through the large pressure ring 4. The diffractive beam splitter 6 is fixed in the small sleeve 5 through the small pressure ring 7, so that the diffractive beam splitter 6 maintains a stable working state, ensuring the accuracy and stability of the beam dispersion. The diffractive beam splitter 6 is used to disperse the laser beam into a micro laser beam arranged in a dot matrix shape. The diffractive beam splitting angle of the diffractive beam splitter 6 is 2°.

[0027] A plurality of replaceable fronts 9 are connected to the front end of the large sleeve 8. Each replaceable front 9 includes a focusing lens mounting cylinder and a distance gauge. The focusing lens mounting cylinder and the distance gauge are of an integral structure. A focusing lens is installed inside the focusing lens mounting cylinder, which is used to adjust the dot density and focal length of the output light beam. Replaceable fronts 9 with different length specifications are internally installed with focusing lenses of different focal lengths and distance gauges of different lengths, which are used to achieve laser output with different dot densities. The focusing lenses are respectively selected with specifications of focal lengths of 10mm, 15mm, 30mm, 40mm, and 50mm. The focusing lens is responsible for precisely focusing the laser dots dispersed by the diffraction beam splitter 6 onto the skin to form a spot matrix with different densities. Each focusing lens is matched with a distance gauge of a specific length to ensure an appropriate distance from the treatment area and precisely control the focal position of the laser.

[0028] As Figure 3 shown in the optical path diagram and as Figure 4 shown in the dot pattern, according to the characteristics of the diffraction beam splitter, the spacing D of the laser dots can be expressed by the formula D = f • tan(α), where D represents the spacing between every two dot spots, f is the focal length of the focusing lens, and α is the diffraction beam splitting angle. Once the diffraction beam splitter is determined, then the diffraction beam splitting angle α is also determined. Therefore, to obtain dots with different spacings, it can be achieved by changing the focal length f of the focusing lens.

[0029] In this embodiment, the diffraction beam splitting angle of the diffraction beam splitter is α = 2°. The focusing lenses are respectively selected with specifications of focal lengths of 10mm, 15mm, 30mm, 40mm, and 50mm. Then, according to the formula, dot spacings of 0.35mm, 0.5mm, 1mm, 1.4mm, and 1.75mm with different density specifications can be obtained. By using replaceable fronts of different specifications, laser output with different dot densities can be achieved to meet different clinical treatment requirements.

[0030] In one embodiment, the outer surface of the standard mechanical interface 1 is provided with a grooved knurling for increasing friction to prevent the laser treatment handpiece from slipping or moving during use.

[0031] In one embodiment, the replaceable front 9 is designed for single - use to avoid cross - infection between different users.

[0032] The working principle of using the present utility model is as follows: Before starting to use, first connect the standard mechanical interface 1 to the laser transmission device by means of threading. When connecting, rotate the standard mechanical interface 1 until the physical prompt provided by the interface limit ring 2 to ensure that the connection is in place; select an appropriate replaceable front end 9 according to the size and requirements of the use area, and fixedly connect it to the large sleeve 8. Make the distance gauge of the replaceable front end 9 of the laser treatment handpiece contact the use area, start the laser transmission device, the laser enters the laser treatment handpiece, and the diffraction beam splitter 6 disperses the laser beam into a plurality of tiny beams arranged in a dot matrix. These beams then pass through the focusing lens installed in the replaceable front end 9 for focusing, and finally are projected onto the use area in an accurate dot matrix form. By replacing the focusing lens with different focal lengths, the spacing of the laser dot matrix can be changed.

[0033] The above are only the preferred embodiments of the present utility model. It should be pointed out that for those of ordinary skill in the art of this technology, without departing from the principle of the present utility model, several improvements and refinements can still be made, and these improvements and refinements should also be regarded as the protection scope of the present utility model.

Claims

1. A laser treatment handpiece with variable dot matrix density, characterized in that, It includes a standard mechanical interface (1), an interface limit ring (2), a transition ring (3), a large sleeve (8), and several replaceable fronts (9) with different length specifications. The standard mechanical interface (1) is connected to the laser transmission device. The interface limit ring (2) is installed on the standard mechanical interface (1). One end of the transition ring (3) is connected to the standard mechanical interface (1), and the other end is connected to the large sleeve (8). A diffraction beam splitter (6) is arranged inside the large sleeve (8). The diffraction beam splitter (6) is fixed inside the large sleeve (8) through an installation structure and is used to disperse the laser beam into tiny laser beams arranged in a dot matrix. Several replaceable fronts (9) are connected to the large sleeve (8). Each replaceable front (9) includes a focusing lens mounting cylinder and a distance gauge. A focusing lens is installed inside the focusing lens mounting cylinder and is used to adjust the dot matrix density and focal length of the output beam.

2. The variable dot matrix density laser treatment handpiece according to claim 1, characterized in that, The installation structure includes a large retaining ring (4), a small sleeve (5), and a small retaining ring (7). The small sleeve (5) is fixed inside the large sleeve (8) through the large retaining ring (4). The diffraction beam splitter (6) is fixed inside the small sleeve (5) through the small retaining ring (7).

3. The variable dot matrix density laser treatment handpiece according to claim 1, characterized in that, Inside the replaceable fronts (9) with different length specifications, focusing lenses with different focal lengths and distance gauges with different lengths are installed to achieve laser output with different dot matrix densities.

4. The dot matrix density variable laser treatment handpiece according to claim 3, characterized in that, The diffraction beam splitting angle of the diffraction beam splitter (6) is 2°. The focusing lenses are respectively selected with specifications of focal lengths of 10 mm, 15 mm, 30 mm, 40 mm, and 50 mm.

5. A variable dot matrix density laser treatment handpiece according to claim 1, characterized in that, The focusing lens mounting cylinder and the distance gauge are of an integrated structure.

6. The variable dot matrix density laser treatment handpiece according to claim 1, wherein The outer surface of the standard mechanical interface (1) is provided with groove knurling for increasing friction.

7. The variable dot matrix density laser treatment handpiece according to claim 1, characterized in that The replaceable front (9) is for single use.

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