Semiconductor laser therapeutic apparatus

Abstract

The application discloses a semiconductor laser therapeutic instrument, which comprises a shell (1), a light cone (3) fixed to the shell (1), a cooling port (4) and an air cooler port (5), and further comprises a guide part (6) comprising an outer shell (61) and an inner wall (63), the outer shell (61) is connected with the inner wall (63) and forms an air cooling channel (62) in the inside, the upper surface (610) of the outer shell (61) of the guide part (6) is connected to the lower surface (11) of the shell (1), the air cooler port (5) is connected to one side of the outer shell (61) and penetrates the air cooling channel (62), and the cooling port (4) is connected to the other side of the outer shell (61) and is used for contacting the skin. The semiconductor laser therapeutic instrument has a gas cooling structure, can quickly cool the skin through metal and gas at the same time, has good cooling effect and is suitable for use of a laser therapeutic instrument with higher energy and shorter wavelength.

Description

TECHNICAL FIELD

[0001] The present application relates to a semiconductor laser therapeutic instrument, and belongs to the field of beauty and body shaping devices. BACKGROUND

[0002] At present, in the medical and beauty industry, there are many therapeutic instruments that use laser treatment and cooling at the same time. Take a hair removal instrument as an example. The methods of hair removal treatment include physical hair removal, chemical hair removal, electric needle hair removal, color light IPL hair removal and laser hair removal, etc. Physical hair removal, chemical hair removal, electric needle hair removal and color light IPL hair removal all have different irritations.

[0003] Semiconductor laser hair removal is a high-efficiency and permanent hair removal technology. Its principle is to use the selective photothermal effect theory to let the laser of a specific wavelength penetrate the epidermis without damaging the epidermal hair follicles. The black pigment in the hair shaft selectively absorbs the laser energy, and the hair follicle is heated and coagulated to die, so that the hair does not grow again.

[0004] The current popular ice point hair removal technology mainly uses 808nm wavelength laser hair removal technology. An ice point semiconductor laser hair removal instrument handle is generally provided with a cold compress head in front of the handle to absorb the heat generated during the treatment process, prevent damage to the skin surface layer, and improve the comfort of the user during the treatment process. However, the 808nm laser is not the best absorption peak wavelength of melanin, and the curative effect on the resting period cells is poor.

[0005] In order to realize the refrigeration of the cold compress head, a cooling device needs to be arranged in the handle, but the existing laser hair removal instrument handle generally has low cooling efficiency and cannot quickly realize cooling, thereby affecting the use effect. For example, a semiconductor laser hair removal instrument and its handle are disclosed in the Chinese Utility Model Patent No. CN201720655773.2, wherein the double refrigeration pieces 71 are tightly attached to the cold compress head 1 to cool the cold compress head 1. The cold compress head 1 is an arc-shaped shell, which directly contacts the skin to cool the skin around the laser heating position. This contact cooling method needs the refrigeration pieces to continuously and quickly cool, which may cause the situation of insufficient cooling effect and burns. SUMMARY

[0006] The technical problem to be solved by the present application is to provide a semiconductor laser therapeutic instrument for realizing excellent curative effect of the semiconductor laser therapeutic instrument, and quickly cooling to avoid burns.

[0007] In order to realize the above technical purpose, the present application adopts the following technical scheme:

[0008] A semiconductor laser therapeutic instrument, comprising a shell (1), a light cone (3) fixed to the shell (1), a cooling port (4) and a cold air fan port (5), characterized in that it further comprises:

[0009] A guide part (6) comprising an outer shell (61) and an inner wall (63), the outer shell (61) is connected with the inner wall (63) and forms a cold air channel (62) inside,

[0010] An upper surface (610) of the outer shell (61) of the guide part (6) is connected to a lower surface (11) of the shell (1),

[0011] The cold air outlet (5) is connected to one side of the outer shell (61) and penetrates the cold air channel (62),

[0012] The cooling port (4) is connected to the other side of the outer shell (61) for skin contact.

[0013] Wherein preferably, an air outlet (64) is further formed between the outer shell (61) and the inner wall (63),

[0014] The air outlet (64) penetrates the cold air channel (62) and is located at an intermediate position between the lower surface (11) of the shell (1) and the cooling port (4).

[0015] Wherein preferably, the center line of the cold air channel (62) intersects the center line of the light cone (3).

[0016] Wherein preferably, the outer shell (61) is C-shaped with an opening facing the side of the light cone (3).

[0017] Wherein preferably, the semiconductor laser therapeutic apparatus further comprises a light cone cover (2) covering the outside of the light cone (3) and fixed on the lower surface (11) of the shell (1).

[0018] Wherein preferably, the air outlet (64) is near the lower surface (21) of the light cone cover (2).

[0019] Wherein preferably, the cooling port (4) has an upper surface (42) and a lower surface (41) for skin contact,

[0020] The light cone (3) comprises a light outlet (33) closer to the lower surface (41) than the upper surface (42), and the distance from the light outlet (33) to the lower surface (41) of the cooling port (4) is 2-6 mm.

[0021] Wherein preferably, the semiconductor laser therapeutic apparatus further comprises a cover (7) clamped between the lower surface (11) of the shell (1), the upper surface (42) of the cooling port (4), and the outer shell (6).

[0022] Preferably, the cooling port (4) is arranged around the light emission port (33), and the distance from the cooling port (4) to the center point of the light emission port (33) is not less than 40 mm.

[0023] Preferably, the light cone (3) emits a laser with a wavelength of 755nm.

[0024] The semiconductor laser therapy device provided by this invention has a gas cooling structure, which can rapidly cool the skin through the simultaneous use of metal and gas. This semiconductor laser therapy device has excellent cooling effect, making it suitable for using semiconductor lasers with higher energy and shorter wavelengths for hair removal. The process is safe, fast, and can permanently remove body hair, preventing damage to the skin surface and improving user comfort during treatment. Attached Figure Description

[0025] Figure 1 This is a side view schematic diagram of the semiconductor laser therapy device provided by the present invention;

[0026] Figure 2 This is a partial enlarged view of the semiconductor laser therapy device provided by the present invention;

[0027] Figure 3 This is a schematic diagram of the cooling air duct in the semiconductor laser therapy device provided by the present invention;

[0028] Figure 4 This is a partial cross-sectional view of the semiconductor laser therapy device provided by the present invention;

[0029] Figure 5 This is a bottom view of the semiconductor laser therapy device provided by the present invention. Detailed Implementation

[0030] The technical solution of the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] like Figure 1 As shown, the semiconductor laser therapy device provided by this invention can be a therapy device for whitening and removing freckles, a therapy device for hair removal, a therapy device that has both whitening and freckle removal functions, or a therapy device for medical and cosmetic purposes such as skin rejuvenation, treatment of rosacea, and varicose veins. Here, we will use a hair removal therapy device as an example for explanation.

[0032] The semiconductor laser therapeutic apparatus of the present application comprises a metal or plastic shell 1, a light cone sleeve 2, a light cone 3, a cooling port 4, a cooling fan port 5, a guide part 6 and a cover 7. The laser emitter is arranged in the shell 1, the light cone 3 is arranged in front of the laser emitter, the light cone sleeve 2 is fixed below the shell 1 and sleeved outside the light cone 3, so that the light cone 3 is arranged below the shell 1. The guide part 6 is arranged on one side of the light cone 3 and the light cone sleeve 2, and the cooling port 4 is arranged below the light cone 3 and connected with the guide part 6.

[0033] The shell 1 is long strip-shaped for holding by the user's hand. The laser emitter, control circuit and the like are arranged in the shell 1 for generating and emitting laser. The laser is emitted downward along the longitudinal direction of the shell 1. Preferably, the chip of VCSEL laser type is arranged in the shell 1, which has long service life. The light emitting chip of the laser emitter is arranged in rectangle.

[0034] As an optional solution, a strap (not shown), also called magic band, can be arranged on one side of the shell 1 for the hand to pass through the strap and reliably hold the shell 1. The side where the strap is arranged and the side where the cooling fan port 5 is arranged are preferably perpendicular to each other, but are not limited in position, as long as the user can see the light cone 3 when holding the strap, and the view is not blocked by the cooling guide part 6 or the cooling fan port 5 or interference occurs, so as to facilitate the user to operate the therapeutic apparatus.

[0035] As shown in Figure 2 and Figure 4 , in order to match the laser emitter, the light cone sleeve 2 and the light cone 3 are both in the shape of quadrangular pyramid (square cone), and the cross section in the horizontal plane is in rectangle. Of course, the cross section in the horizontal plane of the light cone sleeve 2 and the light cone 3 can also be square or circular. The light cone 3 comprises a cone 31, an upper surface 32 of the cone 31 and a lower surface light outlet 33 of the cone 31. It can be understood that the center line of the laser emitter in the shell 1 is aligned with the center line of the light cone sleeve 2 and the light cone 3, so that the laser emitted from the shell 1 enters the upper surface 32 of the light cone 3 and travels along the center line of the light cone sleeve 2 and the light cone 3 to the light outlet 33 of the light cone 3. The light of the laser hits the upper surface 32 of the light cone 3 as shown in Figure 4 , the quadrangular pyramid structure makes the light gather together and then is emitted downward from the light outlet 33 of the light cone 3. Since the light emitting chip is arranged in rectangle, the square cone type light cone 3 is more conducive to energy transmission and energy concentration.

[0036] As shown in Figure 3 and Figure 4 , the cooling fan port 5 is connected to the outside of the upper part of the guide part 6 and is located on the left side of the guide part 6 in the figure. The cooling fan port 5 has external threads for connecting a cooling fan (not shown) and has a channel 51 in the inside. The cooling fan port 5 can be a threaded connection port or other connection forms.

[0037] The guiding part 6 has a metal outer shell 61, an inner wall 63, a cold air channel 62 and an air outlet 64. The top part 610 of the outer shell 61 is fixed to the lower surface 11 of the shell 1, for example, by screwing or bolting. The horizontal cross section of the outer shell 61 is roughly C-shaped, with the opening facing the light cone sleeve 2 and the light cone 3.

[0038] The inner wall 63 is between the outer shell 61 and the light cone sleeve 2, abuts against the light cone sleeve 2, and is connected to the upper part 611 of the outer shell 61, so that the cold air channel 62 is formed between the upper part 611 of the outer shell 61 and the inner wall 63. As shown in Figure 3 and Figure 4 The inner wall 63 is a component independent of the light cone sleeve 2, and it can be understood that the inner wall 63 can also be a side surface of the light cone sleeve 2 facing the outer shell 61 (i.e., the inner wall 63 is not an independent component, but a part of the light cone sleeve 2).

[0039] Further, as shown in Figure 4 The upper part 611 of the outer shell 61 and the inner wall 63 enclose the cold air channel 62, and form the air outlet 64. The air outlet 64 is located at the lower end of the cold air channel 62, facing the cooling port 4. The air outlet 64 is roughly square (three sides are straight lines, and the other side is arc-shaped, which is the shape of the upper part 611 of the outer shell 61), and in this embodiment, the side length of the air outlet 64 is 16 mm, and the air outlet area is about 140 square millimeters. This position is better in terms of the cross-sectional area under the same cold air flow, and the current shape meets the machining requirements of the numerical control machine tool and the cooling and conduction metal strength requirements, and the cross-sectional area is the largest. The air outlet area of the air outlet 64 is preferably greater than 100 square millimeters.

[0040] In this embodiment, the air outlet 64 is higher than the lower surface of the light cone sleeve 2, in other words, the distance from the air outlet 64 to the lower surface 11 of the shell 1 is less than the distance from the bottom of the light cone sleeve 2 to the lower surface 11 of the shell 1. The relative position of the air outlet 64 and the lower surface 21 of the light cone sleeve 2 is designed such that the air outlet 64 is near the lower surface of the light cone sleeve 2, so that part of the cold air can directly blow onto the light cone 3 to quickly reduce the temperature of the light cone 3.

[0041] It is understood that the air outlet 64 can be flush with or lower than the lower surface 21 of the light cone sleeve 2 (if aesthetic factors are not considered), but not lower than the light outlet 33 of the light cone. In this invention, the air outlet 64 is approximately located at the midpoint between the lower surface 11 of the housing 1 and the light outlet 33 (i.e., near the center position). The distance between the air outlet 64 and the light outlet 33 is determined comprehensively based on factors such as the temperature and volume of the cold air input from the cold air blower, the temperature reaching the skin, and the time required for laser treatment per unit area. The distance from the center point of the air outlet 64 to the light outlet 33 should be no less than 40 mm, preferably between 30 mm and 60 mm, and in this embodiment, it is 45 mm, to ensure that after the cold air is dispersed from the air outlet 64, part of it can be blown onto the light cone 3, and the other part can be diffused to the entire skin surface area covered by the treatment device in a timely manner.

[0042] Figure 4 The middle arrow indicates the path of the cold air. It can be seen that the cold air duct 62 is angled, and its centerline intersects with the centerline of the light cone 3. The cold air output from the air cooler enters the cold air duct 62 through the channel 51 of the air cooler outlet 5, then travels downwards to the air outlet 64, where it disperses in all directions. The extension direction of the cold air duct 62 is parallel to the extension direction of the outer surfaces of the light cone sleeve 2 and the light cone 3. At the air outlet 64, the C-shaped outer shell 61 (opening towards the light cone sleeve 2 and the light cone 3) blocks the cold air, causing some of the cold air to flow out of the air outlet 64 obliquely towards the side of the light cone 3, and the other part to blow downwards to the cooling port 4, i.e., onto the skin, thus simultaneously cooling both the light cone 3 and the skin.

[0043] Cooling vent 4 is connected to the lower part of housing 61, and cooling vent 4 and housing 61 can also be integrally formed using conductive cooling metal. For example... Figure 5 As shown, the cooling port 4 is arranged around the light outlet 33 of the light cone 3, and the shape of the cooling port 4 is elliptical (racetrack-shaped). The cooling port 4 includes an arc-shaped portion 43 and two straight-edged portions 44. One side of one straight-edged portion 44 ( Figure 4 The left side of the middle section and the end of the C-shaped outer casing 61 near the air outlet 33 ( Figure 4 (Right side of the middle) connects; the other side of the straight edge 44 ( Figure 4 (Right side) is connected to the arc-shaped part 43. It can be understood that the cooling vent 4 is only used to confine the cold air within a certain area of ​​the skin surface, thereby effectively cooling the skin. Therefore, the shape of the cooling vent 4 can be designed according to the product industrial design, such as aesthetics, ease of processing, mechanical strength and other factors. It is not limited to the shape of a racetrack. It can be a circle, square or even an irregular shape surrounding the light outlet 33.

[0044] The straight edge 44 and the arc-shaped edge 43 have certain height and thickness to ensure mechanical strength and support the whole therapeutic instrument. Moreover, the height of the straight edge 44 and the arc-shaped edge 43 is greater than the distance from the light outlet 33 to the lower surface 41 of the cooling port 4, i.e. the light outlet 33 extends into the space enclosed by the straight edge 44 and the arc-shaped edge 43. In other words, the light outlet 33 of the light cone 3 is lower than the upper surface 42 of the cooling port 4 and is closer to the lower surface 41 of the cooling port 4 than the upper surface 42. The lower surface 41 of the cooling port 4 is used to contact the skin, and further, the distance from the light outlet 33 to the lower surface 41 of the cooling port 4 is 2-6 mm, so that when the cooling port 4 is close to the skin, there is a certain distance between the light outlet 33 and the skin.

[0045] Reference Figure 5 The maximum distance from the arc-shaped edge 43 to the center point of the light outlet 33 is 19-23 mm, and the maximum distance from the straight edge 44 to the center point of the light outlet 33 is 11-15 mm. This distance is determined according to the mechanical strength of the cooling port 4, the processing cost, the cross-sectional area of the air outlet, the processing speed of the therapeutic instrument, and the aesthetic degree and other factors.

[0046] Preferably, a cover 7 can be arranged on the other side of the light cone 3 and the light cone sleeve 2, and the cover 7 is arranged on the opposite side of the guide 6. The cover 7 cooperates with the guide 6 to form a closed space (only allowing cold air to be discharged from the cooling port 4) around the light cone 3 and the light cone sleeve 2 below the shell 1. The cover 7 is made of transparent plastic material and can be clamped between the lower surface 11 of the shell 1, the upper surface 42 of the cooling port 4 and the C-shaped open end of the shell 6, so as to form an enclosed space between the lower surface of the whole shell 1 and the lower surface 41 of the cooling port 4 to accommodate the cold air diffused from the air outlet 64 and prolong the residence time of the cold air in the enclosed space, thereby enhancing the cooling effect.

[0047] The working principle of the present application is explained as follows. Cold air at below -15 degrees Celsius is sent out from the air cooler at a speed of about 500 L / min, enters the air cooler opening 5, passes through the passage 51, enters the cold air channel 62 of the shell 6, and passes through the air outlet 64, and then rapidly spreads in the space surrounded by the cover 7 and the shell 61 and the cooling opening 4, and reaches the lower surface of the cooling opening 4 to contact the skin. There are two media for cooling the skin: one is the gas spread on the lower surface 41 of the cooling opening 4, and the other is the metal on the lower surface 41 of the cooling opening 4. The cold air enters the cold air channel 62 of the shell 61, and since the shell 61 is made of metal, it has strong heat conduction performance, and the temperature of the shell 61 rapidly decreases until it is consistent with the temperature of the cold air. Similarly, since the cooling opening 4 is made of metal and is connected with (even integrated with) the shell 61, it also has good heat conduction performance and can rapidly decrease in temperature until it is consistent with the temperature of the shell 61. Therefore, the temperature of the cooling opening 4 is basically consistent with the temperature of the cold air. In addition, the temperature of the cold air increases to a certain extent during the spreading process after flowing out of the air outlet 64. The increased temperature value is related to the size of the space surrounded by the cover 7 and the shell 61 and the temperature difference between the inside and outside of the cover. In order to ensure that the temperature of the gas for cooling the skin is the designed value, the size of the space surrounded by the cover 7 and the shell 61 needs to be accurately calculated.

[0048] Through experiments, it is found that the semiconductor laser treatment instrument provided by the present application can rapidly cool the skin through metal and gas simultaneously by using the gas cooling structure, completely avoids the epidermal burn caused by the "contact cooling", rapidly cools the epidermis during the treatment process, and the user does not have a burning sensation during the whole process. In addition, the semiconductor laser treatment instrument can also cool the light cone through gas simultaneously, has good cooling effect, is suitable for using higher energy and shorter wavelength semiconductor laser for hair removal, has a safe and rapid treatment process, can permanently remove the body hair, prevents damage to the skin surface layer, and improves the comfort of the user during the treatment process.

[0049] Therefore, the semiconductor laser treatment instrument provided by the present application can use 755 nm wavelength laser. 755 nm is the best absorption peak wavelength of melanin, and it has excellent curative effect on hair removal and pigment damage treatment. The biggest advantage of 755 nm laser hair removal is that it can remove the hair in the growth period and the resting period at the same time, so that the resting period hair follicle and the surrounding hair follicle stem cells completely lose activity, and the hair removal can truly be permanent and not recur, which cannot be achieved by other traditional hair removal.

[0050] The semiconductor laser treatment instrument provided by the present application is described in detail above. Any obvious modification made by the person skilled in the art without departing from the essential spirit of the present application will constitute an infringement of the patent right of the present application, and the person skilled in the art will bear the corresponding legal responsibility.

Claims

1. A semiconductor laser therapeutic apparatus, comprising a shell (1), a light cone (3) fixed to the shell (1), a cooling port (4) and an air cooler port (5), characterized in that Further comprising: a guide part (6) comprising an outer shell (61) and an inner wall (63), the outer shell (61) is connected with the inner wall (63) and forms a cold air channel (62) inside, the outer shell (61) is C-shaped, the opening is towards the side of the light cone (3), the outer shell (61) and the inner wall (63) further form an air outlet (64), the air outlet (64) is through the cold air channel (62), and is located at the middle position between the lower surface (11) of the shell (1) and the cooling port (4); the upper surface (610) of the outer shell (61) of the guide part (6) is connected to the lower surface (11) of the shell (1), the cold air fan port (5) is connected to one side of the outer shell (61) and is through the cold air channel (62), the cooling port (4) is connected to the other side of the outer shell (61) and is made of conductive cooling metal for contact with the skin; wherein the cooling port comprises an arc-shaped part and two straight edge parts, one side of one of the straight edge parts is connected to one end of the C-shaped outer shell near the air outlet, the other side of the straight edge part is connected to the arc-shaped part to form an elliptical shape together; and the light cone (3) comprises a light outlet (33), the height of the straight edge part and the arc-shaped part is greater than the distance from the light outlet to the lower surface of the cooling port, so that the cooling port limits the cold air to a certain area on the skin surface; a cover (7) is clamped between the lower surface (11) of the shell (1), the upper surface (42) of the cooling port (4) and the outer shell (61), the cover (7) cooperates with the guide part (6) to form a closed space around the light cone (3) and the light cone sleeve (2) below the shell (1); wherein the external cold air is blown into the cold air channel from the cold air fan port and is scattered in four directions through the air outlet; so that part of the cold air is directly blown to the side of the light cone, thereby cooling the light cone; and the other part of the cold air is contained in the closed space and blown to the cooling port, thereby rapidly cooling the skin through the metal cooling port and the cold air.

2. The semiconductor laser therapeutic apparatus according to claim 1, wherein: The center line of the cold air channel (62) intersects the center line of the light cone (3).

3. The semiconductor laser therapeutic apparatus according to claim 1, wherein Further comprising a light cone sleeve (2) sleeved outside the light cone (3) and fixed on the lower surface (11) of the shell (1).

4. The semiconductor laser therapeutic apparatus according to claim 3, wherein the semiconductor laser is a laser diode. The air outlet (64) is near the lower surface (21) of the light cone sleeve (2).

5. The semiconductor laser treatment instrument according to claim 1 or 4, wherein: the cooling port (4) has an upper surface (42) and a lower surface (41), the lower surface (41) is used for contact with the skin, the light outlet (33) is closer to the lower surface (41) than the upper surface (42), and the distance from the light outlet (33) to the lower surface (41) of the cooling port (4) is 2-6 mm.

6. The semiconductor laser therapeutic apparatus according to claim 4, wherein the semiconductor laser is a laser diode. The cooling port (4) is arranged around the light outlet (33), and the distance from the cooling port (4) to the center point of the light outlet (33) is not less than 40 mm.

7. The semiconductor laser therapeutic apparatus according to claim 4, wherein the semiconductor laser is a laser diode. The light cone (3) emits laser light with a wavelength of 755 nm. The light cone (3) emits laser light with a wavelength of 755 nm.

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