A pre-positioning light spot adjustable phototherapy instrument

Abstract

The application provides a pre-positioning light spot adjustable phototherapy instrument. The phototherapy instrument comprises a phototherapy instrument main body for emitting treatment light, and a light shielding structure for controlling the light spot of the treatment light. The phototherapy instrument is configured to have two mutually convertible modes: in the first mode, the light shielding structure is only partially pre-connected with the phototherapy instrument main body; in the second mode, the light shielding structure is completely connected with the phototherapy instrument main body. The pre-positioning light spot adjustable phototherapy instrument provided by the application can easily adjust the adjustable light shielding window of the light shielding structure to be consistent with the size of the affected area. Before irradiation, the operator can easily observe and operate with one hand, and can quickly align the affected area. During irradiation, the adjustable light shielding window and the phototherapy instrument cannot be relatively displaced.

Description

Technical Field

[0001] This invention relates to a phototherapy device, specifically to an ultraviolet phototherapy device with infinitely adjustable pre-positioned light spot, belonging to the field of phototherapy technology. Background Technology

[0002] Ultraviolet phototherapy originated in the 1920s and is now widely used in clinical practice to treat various skin diseases such as psoriasis and vitiligo. Because its efficacy and safety have been confirmed in domestic and foreign literature, ultraviolet phototherapy has been listed as the preferred method in the treatment guidelines for the above-mentioned diseases.

[0003] However, excessive ultraviolet radiation can cause sunburn symptoms such as redness and stinging of normal skin. Therefore, it is important to avoid exposing normal skin to ultraviolet radiation during treatment. In the early stages or later stages of treatment, the affected skin typically presents as round spots of varying sizes, requiring the surrounding normal skin to be protected from ultraviolet radiation.

[0004] The common method of shading is to cut an opaque material to a size close to the affected area of ​​the skin. However, because the size of each affected area is different, patients need to prepare many shading boards. Furthermore, as the light spot changes during the treatment process, shading boards of different sizes need to be prepared, making the operation cumbersome.

[0005] In addition, some suppliers of ultraviolet phototherapy products on the market also provide shielding sheets. These shielding sheets all use light-transmitting holes of fixed size, which cannot meet the needs of patients for various light-transmitting sizes.

[0006] Patent CN109821158A discloses a phototherapy device with multiple light-shielding modes. The device has a square light outlet at the bottom, and a light-shielding plate below the outlet that matches it. The size of the light-shielding plate is continuously adjustable. Although it has a continuously adjustable light-shielding plate, it is actually difficult to adjust the light outlet to a uniform size for the affected area after the plate is installed on the device, and it is even more difficult to aim the light at the affected area during treatment, resulting in poor operability. Summary of the Invention

[0007] The technical problem to be solved by this invention is:

[0008] (1) The light-shielding window of the existing phototherapy device is difficult to adjust to match the size of the affected area before irradiation;

[0009] (2) It is inconvenient for the operator to observe the affected area and cannot quickly aim at the affected area;

[0010] (3) The phototherapy device cannot be operated with one hand;

[0011] (4) The light-blocking window shifts relative to the phototherapy device during irradiation, affecting the treatment.

[0012] To address the aforementioned technical problems, the present invention provides a pre-positioned adjustable light spot phototherapy device, comprising:

[0013] The main body of the phototherapy device is used to emit therapeutic light;

[0014] A light-shielding structure used to control the spot size of the therapeutic light.

[0015] The phototherapy device is configured to have two interchangeable modes:

[0016] In the first stage, the light-shielding structure is only partially pre-connected to the main body of the phototherapy device;

[0017] In the second form, the light-shielding structure is fully connected to the main body of the phototherapy device.

[0018] In some embodiments, the light-transmitting area of ​​the light-shielding structure is infinitely adjustable.

[0019] In some embodiments, the light-shielding structure includes a light barrier.

[0020] In some embodiments, the light-shielding structure is installed at the front end of the phototherapy device and has a gap between it and the main body of the phototherapy device. The light-shielding structure is partially pre-connected to the main body of the phototherapy device by means of connecting components; the gap is maintained by the elastic force of elastic components.

[0021] In some embodiments, the gap between the light-shielding structure and the main body of the phototherapy device is 8mm-20mm.

[0022] In some embodiments, the connecting component includes three guide rods, the first end of which is fixed to the light-shielding structure, and the second end of which is movably connected to the main body of the phototherapy device; the elastic component includes a spring, which is fitted onto the guide rod or installed in the gap.

[0023] In some embodiments, the phototherapy device body has a locking structure, which is used to fix the light-shielding structure to the phototherapy device body in the second working state.

[0024] In some embodiments, the side edge of the light-shielding structure is connected to the side edge of the light-emitting end of the phototherapy device body, and the connection is equipped with an elastic component.

[0025] In some embodiments, the connection is a pivot and the elastic component is a torsion spring; in the first state, the angle between the light-shielding structure and the light-emitting end is about 90 degrees.

[0026] In some embodiments, the phototherapy device body has a handle, and the extension direction of the handle is perpendicular to the light emission direction of the phototherapy device body.

[0027] The beneficial effects of the present invention are as follows: The adjustable light spot phototherapy device provided by the present invention allows the light-transmitting area of ​​the adjustable light-shielding window of the light-shielding structure to be easily adjusted to match the size of the affected area; before irradiation, the operator can easily observe and operate with one hand, and can quickly align with the affected area; during irradiation, there will be no relative displacement between the light-shielding window and the phototherapy device. Attached Figure Description

[0028] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0029] Figure 1 This is a schematic diagram of the overall appearance and structure of the phototherapy device in Embodiment 1 of the present invention.

[0030] Figure 2 This is a schematic diagram of the internal structure of the phototherapy device in Embodiment 1 of the present invention.

[0031] Figure 3 This is a schematic diagram of the light source component used in the phototherapy device in Embodiment 1 of the present invention.

[0032] Figure 4 This is a schematic diagram of the overall appearance and structure of the phototherapy device in Embodiment 2 of the present invention.

[0033] Figure 5 This is a schematic diagram of the internal structure of the phototherapy device in Embodiment 2 of the present invention.

[0034] Figure 6 This is a schematic diagram of the overall appearance and structure of the phototherapy device in Embodiment 3 of the present invention.

[0035] The meanings of the reference numerals in the above figures are as follows:

[0036] 110 Outer shell

[0037] 111 Start button

[0038] 112 display screen

[0039] 113 Function Keys

[0040] 114 Charging Port

[0041] 115 Tail end heat dissipation holes

[0042] 116 Front ventilation holes

[0043] 117 Flange

[0044] 120 Battery Cover

[0045] 130 buckle

[0046] 131 Buckle Head

[0047] 132 Clip Spring

[0048] 211 Adjustable aperture

[0049] 212 Adjustment knob

[0050] 221 Guide rod

[0051] 222 small springs

[0052] 223 Stopper

[0053] 230 large spring

[0054] 311 lithium battery

[0055] 312 Controller

[0056] 313 Fan

[0057] 321 aluminum substrate

[0058] 322 Heatsink Fins

[0059] 323 LED beads

[0060] 324 Infrared Sensor Switch

[0061] 325 filter

[0062] 501 casing

[0063] 502 Light Source Module

[0064] 601 Adjustable aperture

[0065] 602 Adjustment knob

[0066] 603 Torsion Spring Detailed Implementation

[0067] The terms "first," "second," and similar words used in this specification and claims do not indicate any order, quantity, or importance, but are merely used to distinguish different components. The terms "an" or "a" and similar words do not indicate a quantity limitation, but rather indicate the presence of at least one. In the description of this patent, unless otherwise stated, "a plurality of" means two or more.

[0068] In the description of this patent, words such as "comprising" or "having" mean that the elements or objects preceding "comprising" or "having" cover the elements or objects listed after "comprising" or "having" and their equivalents, and do not exclude other elements or objects.

[0069] In the description of this patent, when an element is referred to as being "fixed to / mounted on (or similarly)" another element, it can be directly on the other element or there may be intervening elements. When an element is considered to be "connected" to another element, it can be directly connected to the other element or there may be intervening elements. Conversely, when an element is referred to as being "directly on" another element, there are no intervening elements.

[0070] In the description of this patent, the terms "front", "rear", "upper", "lower", "left", "right", "horizontal", "horizontal", "vertical", "top", "bottom", "inner", "outer", "clockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0071] The existing phototherapy devices on the market have the following drawbacks:

[0072] (1) Although a variety of shades are available, they still cannot match all sizes of affected areas.

[0073] (2) Although an adjustable light-blocking window is provided, it is difficult to adjust the adjustable window to match the size of the affected area because it is fixed to the light outlet of the phototherapy device, and it is also difficult to aim at the affected area during irradiation.

[0074] (3) Although it provides an independent light shield or adjustable light shield that is not fixed to the phototherapy device, it requires two hands to operate: one hand holds the light shield or adjustable light shield, and the other hand holds the phototherapy device. This means that the phototherapy device and the light shield cannot be fixed together, and relative displacement can easily occur during long-term irradiation, which can also cause fatigue for the operator.

[0075] Therefore, this invention provides a pre-positioned adjustable light spot phototherapy device, mainly comprising a phototherapy device body and a light-shielding structure. The phototherapy device body is used to emit therapeutic light, and its internal circuitry, light source, and other components are similar to those of common phototherapy devices. The front end of the phototherapy device body's casing has a design that cooperates with the light-shielding structure.

[0076] The pre-connected light-shielding structure is unique to this invention. The phototherapy device body and the light-shielding structure have the following two interchangeable forms: in the first form, the light-shielding structure is only partially pre-connected to the phototherapy device body; in the second form, the light-shielding structure is fully connected to the phototherapy device body.

[0077] The light-shielding structure is installed at the front end of the phototherapy device and has a gap between it and the main body of the device. The light-shielding structure is partially pre-connected to the main body of the device by connecting components, and the gap is maintained by the elasticity of the elastic components. Depending on the pre-connection method between the light-shielding structure and the main body of the device, the transition from pre-connection to full connection may involve either pushing the main body of the device forward or rotating it to a suitable angle.

[0078] The light-shielding area of ​​the light-shielding structure can be of a fixed shape, a variable shape, or infinitely adjustable. In the case of infinitely adjustable light-transmitting area of ​​the light-shielding structure, an aperture is preferably used.

[0079] Example 1

[0080] The pre-positioned adjustable light spot phototherapy device provided in this embodiment is as follows: Figure 1 and Figure 2 As shown, the phototherapy device mainly consists of two parts: the main body of the phototherapy device and the light-shielding structure. In this embodiment, the light-shielding structure is an aperture, which is movably connected to the front end of the main body of the phototherapy device by multiple guide rods.

[0081] The main body of the phototherapy device is encased in a shell assembly, within which all components are housed. The shell assembly consists of a shell 110 and a battery cover 120. The shell 110 is a plastic housing with an opening on one side for easy installation of internal components; the battery cover 120 covers this opening and is fixed to the shell 110. Another side of the shell 110 has openings for mounting a start button 111, a display screen 112, and function buttons 113. The front of the shell 110 has a front ventilation hole 116, serving as an outlet for airflow. The frontmost front surface of the shell 110 is the light outlet, from which the therapeutic light is emitted. Each of the two front edges of the shell 110 has a stepped hole for accommodating the guide rod 221 and small spring 222 of the light-shielding structure. The frontmost edge of the shell 110 also has a flange 117 for accommodating the light-shielding structure and preventing light leakage. Preferably, the portion of the flange 117 in contact with the light-shielding structure has a sealing ring to enhance sealing.

[0082] The battery cover 120 is an L-shaped plastic cover with an opening at the rear for mounting the charging port 114 and a tail-end heat dissipation hole 115. Outside air enters the housing assembly through the tail-end heat dissipation hole 115, flows through the controller 312, the lithium battery 311, and the heat dissipation fins 322 on the light source module, and then exits through the front heat dissipation hole 116. In other embodiments, the battery cover is simply a plastic cover, and the tail of the phototherapy device is also enclosed by the housing 110, with the opening for mounting the charging port and the heat dissipation hole both located at the tail of the housing 110.

[0083] The housing 110 contains a lithium battery 311, a controller 312, a fan 313, a light source module, and a light filter 325. The fan 313 and the light filter 325 work in conjunction with the light source module. The lithium battery 311 powers the phototherapy device. The controller 312 is one or more circuit boards containing a control chip, a start button 111, a display screen 112, function buttons 113, and other electronic components and their accessories.

[0084] The main body of the light source module is as follows Figure 3 As shown, the main components include an aluminum substrate 321, heat sink fins 322, LED beads 323, and an infrared sensor switch 324. Multiple LED beads 323 form an LED array, mounted in the center of the front side of the aluminum substrate 321. The infrared sensor switch 324 is mounted on the edge of the front side of the aluminum substrate 321, away from the LED bead array, so that the heat emitted by the LED beads 323 does not affect the sensitivity of the infrared sensor switch 324. The function of the infrared sensor switch 324 is to activate light irradiation only when the light-shielding structure is completely in contact with the output surface of the phototherapy device; otherwise, it will terminate the light output to prevent ultraviolet leakage. The heat sink fins 322 are located on the back side of the aluminum substrate 321, and the heat emitted by the LED beads 323 is conducted to the heat sink fins 322 via the aluminum substrate 321. A fan 313 is mounted behind the heat sink fins 322, and the air blown by the fan 313 blows the heat accumulated on the heat sink fins 322 out through the front heat dissipation hole 116. A light filter 325 is used to filter stray light.

[0085] The light-shielding structure is a retractable component with an adjustable aperture that can extend and retract on the housing 110. It includes an adjustable aperture 211, an adjustment knob 212, a guide rod 221, a small spring 222, and a plug 223. The adjustable aperture 211 is a metal arc-shaped blade adjustable aperture with an aperture adjustment range of 0.5mm-30mm. Two screw holes on the rear end face of the adjustable aperture 211 are used to fix the guide rod 221. The adjustment knob 212 is located on the side of the adjustable aperture 211 and is used to adjust the aperture size. One end of the guide rod 221 is fixed in the screw hole of the adjustable aperture 211, and the other end extends into a mounting hole on one side of the housing 110. The small spring 222 is fitted onto the guide rod 221, and the entire spring is placed within the mounting hole; the function of the small spring 222 is to push the guide rod 221 out. The plug 223 covers and seals the mounting hole.

[0086] When the light-shielding structure is in its free state, under the force of the two small springs 222, it moves away from the light output surface by a suitable gap (8mm-20mm). This distance is beneficial for observing the size of the skin lesions through the gap, thereby adjusting the aperture of the light diaphragm to the matching size. It also results in a shorter irradiation and pressing distance after adjustment. There are two guide rods 221 pre-connected between the light-shielding structure and the main body of the phototherapy device. The guide rods 221 play a guiding, sliding, and positioning role, so that the light output of the phototherapy device can accurately irradiate the skin area with the aperture of the light diaphragm positioned, and will not shift during long-term irradiation.

[0087] The front end of the outer casing 110 has a latch 130, the middle of which is connected to the outer casing 110 via a pivot, as shown below. Figure 1 As shown. If the buckle 130 is considered a lever, this pivot point is equivalent to the fulcrum of the lever. The rear bottom of the buckle 130 is supported by a buckle spring 132. The front end of the buckle 130 is a pointed buckle head 131, which cooperates with the tail protrusion of the guide rod 221. When the user presses the light-blocking structure to make it fit tightly against the main body of the phototherapy device, the tail protrusion of the guide rod 221 will be locked by the buckle head 131, as shown. Figure 2 As shown, the light-shielding structure is locked to the main body of the phototherapy device at this time. During irradiation, the operator only needs to apply a small amount of force to press on the affected skin. After the phototherapy is completed, the operator can release the light-shielding structure by pressing the back of the buckle.

[0088] The controller 312 is equipped with a start button 111, a display screen 112, function buttons 113, and a charging port 114. A lithium battery 311 is connected to the controller 312, and the light source module provides power. The lithium battery 311 is charged through the charging port 114. The function buttons 113 adjust the irradiation dose or time. The display screen 112 is used to display information. The controller 312 is used to control the operation of the fan 313, control the light output of the light source module, and detect the position of the aperture, etc.

[0089] The usage process of the pre-positioned adjustable light spot phototherapy device provided in this embodiment is as follows:

[0090] First, the operator adjusts the phototherapy device using function button 113 to the desired dose or time of irradiation. Then, the front end of the adjustable aperture 211 is placed close to the skin, and the size of the light outlet is adjusted using the dial 212 to be the same as or slightly larger than the size of the skin lesion.

[0091] Then, the operator holds the main body of the phototherapy device and applies slight pressure, so that the light-shielding structure is pressed into the main body of the phototherapy device along the guide rod 221 and fits into the outer shell of the main body. Then, the operator presses the start button 111, and the LED beads 323 of the phototherapy device emit light to start phototherapy.

[0092] After the phototherapy is completed, the operator releases the force applied to the main body of the phototherapy device, presses the end of the buckle 130, and the light-shielding structure will pop out along the guide rod 221, ready for the next use.

[0093] Example 2

[0094] In Example 1, two small springs 222 are fitted onto the guide rod 221. In this example, a large spring 230 is located between the light-shielding structure and the main body of the phototherapy device, such as... Figure 4 and Figure 5 As shown. This makes the two objects more stable when they move towards each other, but it slightly obstructs the operator's view. Using a thinner spring wire to make the large spring 230 and reducing the number of spring coils can alleviate the above-mentioned problem of obstructing the view to some extent.

[0095] The other structures of the pre-positioned adjustable light spot phototherapy device provided in this embodiment are basically the same as those of the phototherapy device provided in Embodiment 1. Figure 1 and Figure 4 As can be seen from the comparison, the usage method is the same, and will not be described again here.

[0096] Example 3

[0097] The pre-positioned adjustable light spot phototherapy device provided in this embodiment is as follows: Figure 6 As shown. The phototherapy device includes a main body and a light-shielding structure. The main body consists of a housing 501 and components installed within the housing. The housing 501 has a light outlet on its front side, which differs from the phototherapy devices provided in Embodiments 1 and 2. The light source module 502 is installed inside the housing and close to this location. The main body has a handle, the extension direction of which is perpendicular to the light emission direction of the main body.

[0098] The light-shielding structure also includes an adjustable aperture 601 and an adjustment knob 602. The light-shielding structure is connected to one side of the front of the phototherapy device via a rotating shaft, such as... Figure 6As shown, this pre-connection between the two components results in an angle of 90 degrees or slightly greater. If the angle is too small, the light-blocking structure will obstruct the operator's view, affecting observation of the skin lesions. If the angle is too large, the operator will need to rotate the phototherapy device handle too far, making operation inconvenient.

[0099] A torsion spring 603 is mounted on the rotating shaft. One leg of the torsion spring 603 rests against the light-shielding structure, and the other leg rests against the edge of the light outlet. When the torsion spring 603 is in its free state, the light-shielding structure is basically separate from the main body of the phototherapy device, with only a small pre-connection at the rotating shaft. When the main body of the phototherapy device is folded towards the light-shielding structure, the light-shielding structure will eventually fit against the front of the phototherapy device, at which point the light-shielding structure covers the light outlet.

[0100] The usage process of the pre-positioned adjustable light spot phototherapy device provided in this embodiment is as follows:

[0101] First, the operator adjusts the required dose or time of irradiation using the function buttons (not shown in the figure) on the handpiece of the phototherapy device. Then, the front end of the adjustable aperture 601 is placed close to the skin, and the size of the light outlet is adjusted to be the same as or slightly larger than the size of the skin lesion by adjusting the dial 602.

[0102] Then, the operator holds the handle of the phototherapy device and applies torque to it, causing the phototherapy device to flip and move toward the light-shielding structure until the light-shielding structure is completely in contact with the phototherapy device. Then, the operator presses the start button on the handle of the phototherapy device (not shown in the figure) to perform phototherapy.

[0103] After irradiation, the operator releases the torque applied to the main body of the phototherapy device. Under the action of the torsion spring 603, the light-shielding structure separates from the main body of the phototherapy device, ready for the next irradiation.

[0104] The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of the present invention without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of the present invention through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.

Claims

1. A pre-positioned light spot adjustable phototherapy device, characterized in that, include: The main body of the phototherapy device is used to emit therapeutic light; A light-shielding structure is used to control the spot size of the therapeutic light; The phototherapy device is configured to have the following two interchangeable modes: In the first configuration, the light-shielding structure is only partially pre-connected to the main body of the phototherapy device; The light-shielding structure is installed at the front end of the phototherapy device and has an 8mm-20mm gap with the main body of the phototherapy device. The light-shielding structure is partially pre-connected to the main body of the phototherapy device by means of connecting parts; the gap is maintained by the elastic force of elastic parts. In the second configuration, the light-shielding structure is fully connected to the main body of the phototherapy device.

2. The pre-positioning light spot adjustable phototherapy instrument according to claim 1, characterized in that, The light-transmitting area of ​​the light-shielding structure is infinitely adjustable.

3. The pre-positioning light spot adjustable phototherapy instrument according to claim 2, characterized in that, The light-shielding structure includes an aperture.

4. The pre-positioning light spot adjustable phototherapy instrument according to claim 1, characterized in that, The connecting component includes a guide rod, the first end of which is fixed to the light-shielding structure, and the second end of which is movably connected to the main body of the phototherapy device; the elastic component includes a spring, which is fitted onto the guide rod or installed in the gap.

5. The pre-positioning light spot adjustable phototherapy instrument according to claim 1, characterized in that, The phototherapy device body has a locking structure, which is used to fix the light-shielding structure to the phototherapy device body in the second form.

6. The pre-positioning light spot adjustable phototherapy instrument according to claim 1, characterized in that, The light-emitting end of the main body of the phototherapy device protrudes to accommodate the light-shielding structure.

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