Laser spot shaping device for non-contact laser fat reduction

Abstract

The utility model discloses a laser spot shaping device for non-contact laser fat reduction, and belongs to the technical field of laser modulation shaping. The laser spot shaping device comprises a laser input device, a laser shaping device and a laser output port which are connected in sequence, according to the laser shaping device, diversified light spot shapes, sizes and corresponding imaging distances are achieved through optical lens combination, and various treatment requirements are met. By adopting the structure, the polygonal homogenizing optical fiber is adopted to transmit laser emitted by the laser, so that the laser is uniformly distributed, then light spots are focused through the plano-convex lens, and then the light spots are expanded through the biconcave lens, so that a divergent conical light beam is formed; the divergent conical light beam focuses the light spot through the Fresnel lens, and the technical scheme of focusing through the Fresnel lens can increase the surface area of the light spot acting on the skin, so that the area of the output laser irradiated on the skin is larger while the area of the output laser irradiated on the fat is not changed.

Description

Technical Field

[0001] The utility model relates to the technical field of laser shaping in non-contact laser fat reduction, and in particular to a laser spot shaping device for non-contact laser fat reduction. Background Art

[0002] The non-contact laser fat reduction system uses a robotic arm to drive a treatment head to scan the treatment area of a patient. The treatment head is equipped with a laser spot shaping system, an air cooling system, a temperature sensing system, etc. Among them, the laser spot shaping system expands and shapes a common laser spot to form a spot with a certain shape and size, irradiates the treatment site, transfers heat energy to the fat cells under the skin, and heats the fat tissue to 42°C - 51°C, thereby inducing apoptosis of fat cells. After these subcutaneous fat cells die, they will be naturally excreted through the lymphatic system over time, achieving the effect of fat reduction. In existing laser fat reduction devices, when the spot generated by the current spot shaping system is used to treat patients, the temperature of the skin is usually relatively high, the efficiency requirement for air cooling is very high, and the utilization efficiency of the laser is not high. Content of the Utility Model

[0003] The purpose of the utility model is to provide a laser spot shaping device for non-contact laser fat reduction. First, a square homogenizing optical fiber is used to transmit the laser emitted by the laser, then the spot is focused by a plano-convex lens, and then the spot is expanded by a biconcave lens to form a divergent conical beam. The divergent conical beam is focused by a Fresnel lens. Due to its special texture design, the Fresnel lens effectively concentrates the light when the light passes through the lens, and forms a spot with a certain shape and focusing function at a certain distance. In the non-contact laser fat reduction system, compared with direct irradiation, the technical solution of focusing by the Fresnel lens can increase the surface area of the spot acting on the skin, making the distribution of the laser on the skin surface more extensive. This dispersed distribution on the skin reduces the average power acting on the skin by expanding the action area of the laser spot, thereby reducing the heat absorbed by the skin per unit area, reducing the heat load on the skin surface, and not affecting the energy transfer efficiency to the subcutaneous fat. This solution can reduce the pressure of skin cooling and improve the utilization efficiency of laser energy.

[0004] To achieve the above object, the utility model provides a laser spot shaping device for non-contact laser fat reduction, which includes a laser input device, a laser shaping device, and a laser output port connected in sequence. The laser shaping device includes a plurality of lenses, the plurality of lenses are arranged in parallel, the center points of all the lenses are arranged on the same straight line, and the plurality of lenses can all move on the same straight line to adjust the distance.

[0005] Preferably, the laser input device includes a flexible protective sleeve, inside which a laser transmission optical fiber is arranged. The laser transmission optical fiber is a polygonal homogenizing optical fiber. One end of the laser transmission optical fiber is connected to a laser generator, and the other end is connected to the input port of the laser shaping device.

[0006] Preferably, three kinds of lenses are arranged in the laser shaping device, and a plano-convex lens, a biconcave lens and a Fresnel lens are arranged in sequence according to the optical path direction.

[0007] Preferably, the way to adjust the distance between the lenses includes a sliding rod or a gear transmission structure.

[0008] Preferably, the laser output port is arranged behind the Fresnel lens and keeps a distance from the skin.

[0009] Therefore, the laser spot shaping device for non-contact laser fat reduction adopting the above structure in the present utility model has the following beneficial effects:

[0010] (1) In the present utility model, the laser transmission optical fiber can be specifically set as a square homogenizing optical fiber, which realizes the uniform distribution of the spot energy, and can also be replaced with other cores with various polygonal cross-sections, such as quadrilateral, hexagon, octagon, etc.

[0011] (2) In the present utility model, the laser output from the laser transmission optical fiber passes through the plano-convex lens, and the plano-convex lens converges the divergent laser spot to form a converging spot. A biconcave lens is placed behind the plano-convex lens to expand the spot and form a divergent conical beam. The focal lengths of the plano-convex lens and the biconcave lens should be matched. A Fresnel lens is placed behind the divergent conical beam to focus the beam. The Fresnel lens effectively concentrates the light when passing through the lens through its special texture design, and forms a spot with a focusing function of a certain shape at a certain distance. Through the combination of various lenses, the beam is shaped to meet the usage requirements.

[0012] The technical solution of the present utility model will be further described in detail below through the drawings and embodiments. Description of the Drawings

[0013] Figure 1 It is a schematic internal structure diagram of an embodiment of a laser spot shaping device for non-contact laser fat reduction of the present utility model;

[0014] Reference numerals: 1, laser generator; 2, polygonal homogenizing optical fiber; 3, plano-convex lens; 4, biconcave lens; 5, Fresnel lens; 6, laser output port; 7, skin layer; 8, fat layer. Detailed Embodiments

[0015] The technical solution of the present utility model will be further described below with reference to the accompanying drawings and embodiments.

[0016] Unless otherwise defined, the technical terms or scientific terms used in the present utility model shall have the ordinary meanings understood by those with ordinary skills in the field to which the present utility model belongs. The specific connection methods of each part all adopt conventional means such as bolts, rivets, welding, etc. that are mature in the prior art. The machines, parts and equipment all adopt conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be elaborated here. The "first", "second" and similar words used in the present utility model do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "including" or "comprising" mean that the elements or objects appearing before the word cover the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connected" or "coupled" are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right", etc. are only used to represent relative position relationships. When the absolute position of the object being described changes, the relative position relationship may also change accordingly.

[0017] Embodiment

[0018] As Figure 1 shown, the present utility model provides a laser spot shaping device for non-contact laser fat reduction, which includes a laser input device, a laser shaping device and a laser output port 6 connected in sequence. The laser input device includes an external flexible protective sleeve. Inside the flexible protective sleeve, there is a laser transmission optical fiber. The laser transmission optical fiber is set as a polygonal homogenizing optical fiber 2. In this embodiment, a square homogenizing optical fiber is selected. The laser is transmitted from the square homogenizing optical fiber into the laser shaping device. One end of the laser transmission optical fiber is connected to a laser generator 1 for receiving the laser, and the other end of the laser transmission optical fiber is connected to the input port of the laser shaping device to input the laser into the laser shaping device. The flexible protective sleeve is used to protect the structure of the laser transmission optical fiber.

[0019] The laser shaping device includes several lenses. The several lenses are arranged in parallel and the centers of all the lenses are on a straight line. The spacing between the several lenses can be slidably adjusted. By adjusting the spacing, the focal length effect between the lenses can be adjusted. The ways of slidably adjusting the spacing of the several lenses include but are not limited to existing structures such as sliding rods or gear transmission structures, etc., so as to adjust the distance between multiple lenses. There are three types of lenses provided in the laser shaping device. According to the optical path direction, a plano-convex lens 3, a biconcave lens 4 and a Fresnel lens 5 are arranged in sequence.

[0020] The laser input structure can achieve flexible transmission of the laser and perform shaping preprocessing on the laser during the transmission process. The subsequent laser shaping device only needs to improve the spot quality and adjust the spot size, reducing the tasks of the shaping device and the volume of the shaping device, ultimately making the treatment probe of the laser fat reduction instrument shrink overall;

[0021] The actual optical path is as follows: The laser generator 1 generates laser light, which is transmitted to the laser shaping device through the laser transmission optical fiber. After passing through the polygon homogenizing optical fiber 2, the spot has a small size, uneven spot intensity, and poor spot quality. Therefore, a laser shaping device is added to change the spot quality and size, and finally a square spot with uniform intensity and appropriate size is obtained. In the laser shaping device, the spot is focused by the plano-convex lens 3, and then the spot is expanded by the biconcave lens 4 to form a divergent conical light beam. The divergent conical light beam is focused by the Fresnel lens 5. Due to its special texture design, the Fresnel lens 5 effectively concentrates the light when the light passes through the lens, forming a spot with a focusing function of a certain shape at a certain distance. The spot passes through the laser output port 6 and irradiates on the skin layer 7, and heats the fat layer 8 through the skin layer 7. Finally, the laser output from the laser output port 6 is in a conical structure. This structure can make the laser irradiate a larger area of the skin on the basis of the unchanged fat irradiation area, thereby reducing the damage to the skin surface;

[0022] The technical solution of using the Fresnel lens 5 for focusing can increase the surface area of the spot acting on the skin compared with directly using laser irradiation, making the distribution of the laser on the skin surface more extensive. This dispersed distribution on the skin reduces the average power acting on the skin by expanding the action area of the laser spot, thereby reducing the heat absorbed by the skin per unit area, reducing the heat load on the skin surface, and not affecting the energy transfer efficiency to the subcutaneous fat.

[0023] Therefore, the laser spot shaping device for non-contact laser fat reduction of the present utility model adopts the above structure. By separately arranging the three parts of the laser generator, laser shaping, and laser collimation and focusing, and only placing the laser collimation and focusing part in the treatment probe, the weight and volume of the treatment probe can be reduced.

[0024] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present utility model and are not intended to limit them. Although the present utility model has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that they can still modify or equivalently replace the technical solutions of the present utility model, and these modifications or equivalent replacements do not make the modified technical solutions deviate from the spirit and scope of the technical solutions of the present utility model.

Claims

1. A laser spot shaping device for non-contact laser fat reduction, characterized in that: It comprises a laser input device, a laser shaping device and a laser output port which are connected in sequence. The laser shaping device comprises a plurality of lenses, which are arranged in parallel. The center points of all the lenses are arranged on the same straight line. The plurality of lenses can move on the same straight line to adjust the spacing.

2. The laser spot shaping device for non-contact laser fat reduction according to claim 1, characterized in that: The laser input device includes a flexible protective cover, a laser transmission optical fiber is arranged inside the flexible protective cover, and the laser transmission optical fiber is configured as a polygonal homogenization optical fiber. One end of the laser transmission optical fiber is connected to a laser generator, and the other end of the laser transmission optical fiber is connected to the input port of the laser shaping device.

3. The laser spot shaping device for non-contact laser fat reduction according to claim 2, characterized in that: The laser shaping device is provided with three types of lenses, which are a plano-convex lens, a biconcave lens and a Fresnel lens arranged in sequence according to the direction of the light path.

4. The laser spot shaping device for non-contact laser fat reduction according to claim 3, characterized in that: The lens spacing adjustment method includes a sliding rod or a gear transmission structure.

5. The laser spot shaping device for non-contact laser fat reduction according to claim 4, characterized in that: The laser output port is arranged behind the Fresnel lens and keeps a distance from the skin.

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