A light shielding device for an infrared light therapeutic instrument

Abstract

The utility model provides a kind of light shielding device for infrared light therapeutic instrument, it is related to medical equipment technical field, solve the technical problem that its infrared light emitted by probe causes harm to the eyes of patient or medical staff in the process of probe treating patient.The device fixing mechanism is used for fixing installation on the probe of therapeutic instrument;Shielding mechanism, shielding mechanism is installed on fixed mechanism, and shielding mechanism extends along the irradiation direction of therapeutic instrument probe to be used to shield the skin irradiated in the process of patient treatment;Support mechanism, detachably connected on fixed frame structure, shielding frame structure is fixedly installed on support mechanism.By installing light shielding device on probe, unnecessary infrared light can be effectively blocked from irradiating to non-target area, especially to protect the eyes of patient and medical staff from being harmed.This not only improves the safety of treatment process, but also reduces the discomfort caused by accidental exposure.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a light-shielding device for an infrared light therapy instrument. Background Technology

[0002] Infrared light therapy is a widely used medical device that treats patients by emitting infrared light of specific wavelengths. It primarily utilizes the penetrating power and thermal effect of infrared light in biological tissues to promote blood circulation, relieve pain, and accelerate wound healing. These therapeutic effects mainly rely on the interaction between infrared light and human tissues, particularly its ability to penetrate deep into the skin to provide a gentle heating effect, thereby improving local blood circulation and reducing inflammation and pain.

[0003] Infrared light therapy devices typically consist of a probe emitting one or more light sources that emit infrared light with wavelengths ranging from approximately 700 nanometers to 1 millimeter. The chosen infrared wavelength varies depending on the treatment needs, with near-infrared (NIR) and mid-infrared (MIR) being the two most common types in clinical applications. Near-infrared light is often used for treating deeper tissues due to its better tissue penetration, while mid-infrared light is more commonly used to address superficial skin problems.

[0004] During use, the infrared light therapy device directly shines light onto the body part that needs treatment. This treatment method is non-invasive, reducing patient pain and recovery time. Furthermore, because infrared light is harmless to the human body, this therapy is considered a relatively safe treatment method.

[0005] However, despite the aforementioned advantages, infrared light therapy devices still face some challenges in practical use. For example, ambient light may interfere with the therapeutic effect of the infrared light emitted by the probe, reducing treatment efficiency; at the same time, the infrared light emitted by the probe may also cause discomfort or harm to the eyes of patients or medical staff.

[0006] To address the aforementioned issues, it is necessary to develop a light-shielding device for infrared light therapy instruments. This device could prevent the infrared light emitted by the probe from harming the eyes of patients or medical staff during the treatment process, thus providing a solution to meet the needs of different patients. Utility Model Content

[0007] The purpose of this invention is to provide a light-shielding device for an infrared light therapy instrument, thereby solving the technical problem in the prior art where the infrared light emitted by the probe of an infrared light therapy instrument causes harm to the eyes of patients or medical personnel during patient treatment. The various technical effects of the preferred technical solutions provided by this invention are detailed below.

[0008] To achieve the above objectives, the present invention provides the following technical solution: A light-shielding device for an infrared light therapy instrument, comprising: The fixing mechanism is used to fix the probe of the treatment device to the probe so as to cover the probe inside. A shielding mechanism is mounted on a fixed mechanism and extends along the irradiation direction of the therapeutic probe to shield the patient's skin from irradiation during treatment. The support mechanism is detachably connected to the fixed structure, and the shielding structure is fixedly installed on the support mechanism to achieve rigid support and avoid the irradiation position of the treatment device probe.

[0009] Furthermore, the fixing mechanism includes a support ring and two sets of adjusting components; The support ring is arranged in a ring shape. The inner ring of the support ring is used to fit the probe inside. The two sets of adjustment components are symmetrically arranged on the horizontal surface of the support ring perpendicular to its axis, and the two sets of adjustment components are evenly arranged in the circumferential direction of the support ring. The adjusting component can extend and retract along the radial direction of the support ring to block light leakage at the probe mounting area when it is fitted onto probes of different diameters.

[0010] Furthermore, the adjustment component includes two sets of symmetrically arranged adjustment components, and a total of four sets of adjustment components are evenly arranged along the circumference of the support ring to provide shielding. The adjustment assembly includes an arc-shaped support bar, a first spring, and a first blind curtain; The support ring has a receiving groove with an opening located on the inner circumferential side wall, and the support ring also has a spring groove with an opening located on the bottom surface of the receiving groove. The arc-shaped support bar slides along the radial direction of the support ring. A connecting plate is fixedly connected to the bottom surface of the arc-shaped support bar. The connecting plate is slidably disposed in the spring groove. The first spring is installed in the spring groove, with one end abutting against the side wall of the spring groove and the other end abutting against the connecting plate to push the arc-shaped support bar toward the center of the support ring. One side of the first shielding curtain is fixedly connected to the outer wall of the arc-shaped support strip, and the other side of the first shielding curtain is fixedly connected to the side wall of the receiving groove.

[0011] Furthermore, all four arc-shaped support bars are slidably arranged along the radial direction of the support ring toward the axial direction of the support ring, and the inner walls of the four arc-shaped support bars are used to clamp the probe to accommodate probes of different diameters.

[0012] Furthermore, the first shielding curtain is fan-shaped, with the smaller end of the arc surface of the first shielding curtain fixedly connected to the inner wall of the arc support strip, and the side wall of the larger arc surface of the first shielding curtain fixedly connected to the side wall of the receiving groove. The first shielding curtains of the two sets of adjustment components are stacked one on top of the other, that is, every two first shielding curtains are symmetrically arranged as a group and are devices within the same set of adjustment components, so that the stacking of two adjacent first shielding curtains increases the shielding area.

[0013] Furthermore, the connecting plate is L-shaped and includes a horizontal end and a vertical end. The horizontal end is fixedly connected to the outer wall of the arc-shaped support bar, one end of the vertical end is fixedly connected to the horizontal end, and the other end of the vertical end extends into the spring groove and is fixedly connected to the first spring. The horizontal end extends along the extension direction of the spring groove to increase the extension distance of the arc-shaped support bar in the radial direction of the support ring.

[0014] Furthermore, the adjustment assembly also includes a support shaft, a second spring, and a second blind curtain; The arc-shaped support bar has a groove extending through it along the axial direction of the support ring. The support shaft is slidably disposed in the groove. The second spring is sleeved on the support shaft, and one end of the second spring abuts against the support shaft near the center of the support ring. The other end of the second spring abuts against the circumferential side wall of the support ring to push the second spring out. The arc-shaped support bar is also provided with an arc-shaped through groove. One end of the second shielding curtain is fixedly connected to the end of the support shaft near the center of the support ring. The other end of the second shielding curtain is set in the receiving groove so as to pass through the support shaft to accommodate probes with smaller diameters.

[0015] Furthermore, the support mechanism includes a plurality of support rods and a slider corresponding to each support rod; The bottom of the support ring is provided with an annular groove for the sliding of the slider; The support rod is fixedly connected to the slider so that it can be evenly distributed by sliding the slider in the annular groove; The shielding mechanism is fixedly installed on the support rod.

[0016] Furthermore, the support ring is also provided with a plurality of slots connected to the annular groove. The slots are arranged along the circumference of the annular groove. The slider slides along the annular groove and is connected to the slots and moves along the radial direction of the support ring to be fixed in the slots. The support rods are arranged in a "U" shape to increase the support area.

[0017] Furthermore, the shielding mechanism includes a shielding cloth, which is fixedly connected to the outside of each support rod to wrap the support with the lower end open and the upper end contacting the bottom surface of the support ring. The shielding cloth is fixedly connected to the support rod by Velcro.

[0018] This invention, by designing a light-shielding device for an infrared light therapy instrument, effectively solves the problem of infrared light emitted by the probe in the prior art causing damage to the eyes of patients or medical staff, and brings the following technical benefits: Improving treatment safety: By installing a light-shielding device on the probe, unwanted infrared light can be effectively blocked from reaching non-target areas, especially protecting the eyes of patients and medical staff from harm. This not only enhances the safety of the treatment process but also reduces discomfort caused by accidental exposure.

[0019] Enhanced treatment efficiency: Because the light-shielding device can precisely control the irradiation range of infrared light, it avoids interference from ambient light and other light sources, thereby improving the effectiveness and accuracy of the treatment. This precise positioning helps to concentrate energy on the specific area requiring treatment, further enhancing the therapeutic effect.

[0020] Adapting to diverse needs: The design of this device takes into account the individual differences and treatment needs of different patients. It adopts a detachable support mechanism, which allows for flexible adjustment of the position and angle of the shielding mechanism according to actual needs, meeting personalized treatment requirements. For example, for different body parts or different treatment plans, the optimal treatment configuration can be achieved through simple adjustments.

[0021] Simple to operate and easy to maintain: The light-shielding device has a reasonable structure and is easy to install. The fixing mechanism is tightly integrated with the probe, ensuring stability during use. At the same time, its modular design facilitates cleaning and maintenance, extends the service life of the equipment, and reduces long-term operating costs. In summary, this utility model provides an innovative solution that not only solves the safety hazards of traditional infrared light therapy devices, but also performs well in improving treatment effects and adapting to personalized needs, and has broad application prospects and market value. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the 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 this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure provided in an embodiment of the present utility model; Figure 2 This is a partial structural schematic diagram provided by an embodiment of the present utility model; Figure 3 This is a partial structural schematic diagram of the fixing mechanism provided in an embodiment of the present utility model; Figure 4 This is a schematic diagram of the internal structure of the fixing mechanism provided in this embodiment of the utility model; Figure 5 This is a cross-sectional view of the internal structure of the fixing mechanism provided in this embodiment of the utility model; Figure 6 This is a structural diagram of the internal structure of the fixing mechanism provided in this embodiment of the utility model; Figure 7 This is a schematic diagram of the support mechanism provided in an embodiment of the present utility model.

[0024] Explanation of reference numerals in the attached drawings: 100, fixing mechanism; 110, support ring; 111, receiving groove; 120, arc-shaped support bar; 121, clearance opening; 122, sliding groove; 130, first spring; 140, first shielding curtain; 150, support shaft; 160, second spring; 170, second shielding curtain; 180, connecting plate; 190, positioning plate; 200, shielding mechanism; 300, support mechanism; 310, support rod; 320, slider; 330, annular groove; 340, slot. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be described in detail below. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other implementation methods obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0026] In the description of this utility model, it should be noted that, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0027] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0028] The following is in conjunction with the appendix Figure 1-7 To further describe this application in detail, embodiments of this application disclose a light-shielding device for an infrared light therapy instrument.

[0029] Reference Figure 1 and Figure 2 As shown, this utility model provides a light-shielding device for an infrared light therapy instrument, including a fixing mechanism 100, a shielding mechanism 200, and a supporting mechanism 300.

[0030] The fixing mechanism 100 is used to fix the probe to the therapeutic device and can be adaptively adjusted according to the probe diameter. It can also wrap around the connection point with the probe to prevent infrared light from escaping through the connection point. The support mechanism 300 is fixedly mounted on the fixing mechanism 100 to provide support space and corresponds to the patient's irradiation area. The shielding mechanism 200 is detachably mounted on the support mechanism 300 to shield the patient's skin from irradiation during treatment.

[0031] Reference Figure 2 and Figure 3 As shown, the fixing mechanism 100 includes a support ring 110 and two sets of adjusting components.

[0032] Two sets of adjustment components are fixedly installed inside the support ring 110 and symmetrically arranged with respect to the horizontal sectional plane of the support ring 110 perpendicular to the axial direction. Each set of adjustment components has two sets of adjustment components symmetrically arranged with respect to the axis of the support ring 110. That is, the adjustment components of the fixing mechanism 100 are evenly arranged in the circumferential direction of the support ring 110. The support ring 110 is ring-shaped, and its inner ring is used to project the probe into the interior. The adjustment components block the circumferential direction of the inner cavity of the support ring 110 to prevent the light emitted by the probe from leaking out from the top of the probe when the support ring 110 is installed on the probe, which could cause harm to surrounding patients and medical staff.

[0033] Reference Figure 3 and Figure 4 As shown, the adjustment assembly includes an arc-shaped support bar 120, a connecting plate 180, a first spring 130, and a first blind curtain 140.

[0034] The support ring 110 has an internal receiving groove 111 with an opening on the inner circumference, and a spring groove with an opening on the bottom surface of the receiving groove 111. This structural design not only provides a stable sliding track for the arc-shaped support bar 120, but also achieves compact and efficient component integration through a reasonable spatial layout.

[0035] The arc-shaped support bar 120 is slidably disposed within the receiving groove 111, with its arc-shaped concave surface facing the axis of the support ring 110, ensuring optimal shielding effect. The connecting plate 180 is L-shaped and consists of mutually perpendicular horizontal and vertical ends, wherein the horizontal end is fixed to the convex sidewall of the arc-shaped support bar 120 and extends along the sliding direction of the arc-shaped support bar 120. This design ensures that the connecting plate 180 can smoothly drive the arc-shaped support bar 120 to move precisely. In particular, the length of the horizontal end is set to two-thirds of the length of the spring groove, thereby significantly increasing the effective moving distance of the arc-shaped support bar 120.

[0036] The vertical end is slidably disposed within the spring groove. One end of the first spring 130 is fixed to the vertical end of the connecting plate 180, and the other end is fixed to the side wall of the spring groove. The elastic action of the spring pushes the connecting plate 180, causing the arc-shaped support bar 120 to move towards the axis of the support ring 110. When the spring is fully released, the vertical end will abut against the side wall of the spring groove near the axis of the support ring 110, ensuring the safety and controllability of the system.

[0037] The first shielding curtain 140 is fan-shaped, with one end of the smaller arc surface fixed to the protruding outer wall of the arc-shaped support bar 120, and the other end of the larger arc surface fixed to the side wall of the receiving groove 111. This design allows the shielding curtain to unfold in a fan shape when the arc-shaped support bar 120 extends, effectively expanding the shielding area. Furthermore, two first shielding curtains 140 in the same set of adjustment components are symmetrically arranged on the arc-shaped support surface, and the first shielding curtains 140 of the two sets of adjustment components are symmetrically arranged on a plane perpendicular to the axis of the support ring 110, ensuring that the four first shielding curtains 140 can work together during operation to form all-round shielding protection and effectively achieve full coverage.

[0038] Reference Figure 5 and Figure 6 As shown, the adjustment assembly further includes a support shaft 150, a second spring 160, a second shielding curtain 170, and a positioning plate 190. This design, through multi-layered mechanical linkage, achieves effective adaptation to different probe diameters and provides a more flexible and reliable shielding solution.

[0039] The arc-shaped support bar 120 has a groove 122 extending through it along the axial direction of the support ring 110, and an avoidance opening 121 is provided along the direction of the groove 122. This structure not only provides a precise sliding track for the support shaft 150, but also avoids interference with other components through the design of the avoidance opening 121, ensuring the smooth operation of the entire system.

[0040] The support shaft 150 is slidably disposed within the slide groove 122, with its tail end constrained by a protruding sidewall onto the arc-shaped support bar 120 to prevent detachment; its head end is located on the concave inner wall of the arc-shaped support bar 120 and screwed with a positioning plate 190. This design ensures that the support shaft 150 can stably extend and retract during operation. A second spring 160 is sleeved on the support shaft 150, with one end abutting against the sidewall of the positioning plate 190 and the other end abutting against the inner wall of the arc-shaped support bar 120. The elasticity of the spring pushes the support shaft 150 to extend, thereby achieving an automatic adjustment function.

[0041] The aforementioned structure has at least one set on each arc-shaped support bar 120; in this example, three sets are provided on each arc-shaped support bar 120. This multiple configuration not only improves the system's redundancy but also better copes with complex working environments.

[0042] The second shielding curtain 170 is also fan-shaped, with one end of the smaller arc surface fixed to the side wall of the positioning plate 190, and the other end of the larger arc surface passing through the clearance groove and folded into the receiving groove 111. When the probe diameter is small, when the arc-shaped support bar 120 is fully extended, the support shaft 150, under the action of the second spring 160, carries the second shielding curtain 170 out to achieve further shielding. When the probe diameter is large, the positioning plate 190 will abut against the side wall of the probe. At this time, the second spring 160 is compressed under the action of the compressive force, and the positioning plate 190 carrying the second shielding curtain 170 retracts to adapt to different working requirements.

[0043] Through this multi-layered, modular design, the entire adjustment component can be flexibly adjusted in various application scenarios to ensure optimal occlusion and ease of operation. Especially when dealing with probes of different sizes, the system can automatically adapt without manual intervention.

[0044] Reference Figure 2 and Figure 7 As shown, the support structure includes multiple support rods 310 and a slider 320 corresponding to each support rod 310. This design, through precise mechanical linkage and optimized spatial layout, effectively adapts to different application scenarios and provides a more robust and flexible support solution.

[0045] The bottom of the support ring 110 has an annular groove 330 for sliding the slider 320, and along the circumference of the annular groove 330, a corresponding slot 340 is formed on the support ring 110, which communicates with the outer wall of the annular groove 330. Specifically, both the annular groove 330 and the slot 340 have a dovetail-shaped cross-section. This design not only ensures smooth sliding of the slider 320 within the annular groove 330, but also enhances the limiting function through the slot 340 design, preventing the slider 320 from accidentally disengaging.

[0046] The support rod 310 has a figure-7 shape, with one end fixedly connected to the slider 320 and the other end extending along the axial direction of the support ring 110, thereby effectively increasing the support area and expanding the support range. This unique shape design not only improves the overall rigidity of the support structure, but also better distributes the load and enhances the overall load-bearing capacity.

[0047] When in use, simply move the support rod 310 to slide the slider 320 along the annular groove 330 until it reaches the corresponding slot 340. Then, slide the slider 320 into the slot 340 to form a limit. This process is not only simple to operate but also enables quick positioning and fixation, greatly improving work efficiency. When it is necessary to retract the device, similarly, move the support rod 310 along the annular groove 330 to gather all the support rods 310 together for storage. This design makes the device occupy less space when not in use, facilitating storage and transportation.

[0048] Reference Figure 2 and Figure 7 As shown, the shielding mechanism 200 includes a shielding cloth, which is fixedly connected to the outside of each support rod 310, thereby wrapping the entire support structure and forming a closed space with an opening at the bottom and contacting the bottom surface of the support ring 110 at the top. The shielding cloth is quickly and securely fixed to the support rod 310 via Velcro. This design not only ensures that the shielding cloth will not accidentally come loose during use, but also allows for quick disassembly or adjustment when needed, greatly improving the convenience and flexibility of operation. In summary, this utility model provides an innovative solution that not only solves the safety hazards of traditional infrared light therapy devices, but also performs well in improving treatment effects and adapting to personalized needs, and has broad application prospects and market value.

[0049] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A light-shielding device for an infrared light therapy instrument, characterized in that, include: Fixing mechanism (100) is used to fix the probe of the treatment device to the probe of the treatment device so as to cover the probe of the treatment device inside; The fixing mechanism (100) includes a support ring (110) and two sets of adjusting components; The support ring (110) is arranged in a ring shape. The inner ring of the support ring (110) is used to fit the probe inside. The two sets of adjustment components are symmetrically arranged on the horizontal surface of the support ring (110) perpendicular to its axis, and the two sets of adjustment components are evenly arranged in the circumferential direction of the support ring (110). The adjustment component can extend and retract along the radial direction of the support ring (110) to block light leakage at the probe fitting part when it is fitted to probes of different diameters. The adjustment component includes two sets of symmetrically arranged adjustment components. The two sets of adjustment components, a total of four sets of adjustment components, are evenly arranged around the support ring (110) to provide shielding. The adjustment assembly includes an arc-shaped support bar (120), a first spring (130), and a first blind curtain (140). The support ring (110) has a receiving groove (111) with an opening located on the inner circumferential side wall, and the support ring (110) also has a spring groove with an opening located on the bottom surface of the receiving groove (111). The arc-shaped support bar (120) slides along the radial direction of the support ring (110). A connecting plate (180) is fixedly connected to the bottom surface of the arc-shaped support bar (120). The connecting plate (180) is slidably disposed in the spring groove. The first spring (130) is installed in the spring groove, with one end abutting against the side wall of the spring groove and the other end abutting against the connecting plate (180) to push the arc-shaped support bar (120) toward the center of the support ring (110). One side of the first shielding curtain (140) is fixedly connected to the outer wall of the arc-shaped support strip (120), and the other side of the first shielding curtain (140) is fixedly connected to the side wall of the receiving groove (111). A shielding mechanism (200) is mounted on a fixing mechanism (100) and extends along the irradiation direction of the therapeutic probe to shield the skin irradiated during the patient's treatment. The support mechanism (300) is detachably connected to the fixed structure, and the shielding structure is fixedly installed on the support mechanism (300) to achieve rigid support by using the support mechanism (300) to avoid the irradiation position of the therapeutic probe.

2. The light-shielding device for an infrared light therapy instrument according to claim 1, characterized in that, The four arc-shaped support bars (120) are all slidably arranged along the radial direction of the support ring (110) toward the axial direction of the support ring (110). The inner walls of the four arc-shaped support bars (120) are used to clamp the probe to accommodate probes of different diameters.

3. The light-shielding device for an infrared light therapy instrument according to claim 1, characterized in that, The first shielding curtain (140) is arranged in a fan shape. The smaller end of the arc surface of the first shielding curtain (140) is fixedly connected to the inner wall of the arc support bar (120), and the side wall of the larger arc surface of the first shielding curtain (140) is fixedly connected to the side wall of the receiving groove (111). The first shielding curtains (140) of the two sets of adjustment components are stacked one on top of the other, that is, every two first shielding curtains (140) are symmetrically arranged as a group and are devices within the same set of adjustment components, so that the stacked arrangement of two adjacent first shielding curtains (140) increases the shielding area.

4. The light-shielding device for an infrared light therapy instrument according to claim 1, characterized in that, The connecting plate (180) is L-shaped and includes a horizontal end and a vertical end. The horizontal end is fixedly connected to the outer wall of the arc-shaped support bar (120). One end of the vertical end is fixedly connected to the horizontal end, and the other end of the vertical end extends into the spring groove and is fixedly connected to the first spring (130). The horizontal end extends along the extension direction of the spring groove to increase the extension distance of the arc-shaped support bar (120) in the radial direction of the support ring (110).

5. A light-shielding device for an infrared light therapy instrument according to claim 1, characterized in that, The adjustment assembly also includes a support shaft (150), a second spring (160), and a second blind curtain (170). The arc-shaped support bar (120) has a groove (122) extending through it along the axial direction of the support ring (110). The support shaft (150) is slidably disposed in the groove (122). The second spring (160) is sleeved on the support shaft (150), and one end of the second spring (160) abuts against the support shaft (150) near the axis of the support ring (110). The other end of the second spring (160) abuts against the circumferential sidewall of the support ring (110) to push the second spring (160) out. The arc-shaped support bar (120) is also provided with an arc-shaped through groove. One end of the second shielding curtain (170) is fixedly connected to the end of the support shaft (150) near the axis of the support ring (110). The other end of the second shielding curtain (170) is set in the receiving groove (111) so as to pass through the support shaft (150) to accommodate probes with smaller diameters.

6. The light-shielding device for an infrared light therapy instrument according to claim 1, characterized in that, The support mechanism (300) includes a plurality of support rods (310) and a slider (320) corresponding to each support rod (310). The bottom of the support ring (110) is provided with an annular groove (330) for sliding of the slider (320). The support rod (310) is fixedly connected to the slider (320) so that it can slide on the annular groove (330) for even distribution. The shielding mechanism (200) is fixedly installed on the support rod (310).

7. A light-shielding device for an infrared light therapy instrument according to claim 6, characterized in that, The support ring (110) is also provided with a plurality of slots (340) connected to the annular groove (330). The slots (340) are arranged along the circumferential direction of the annular groove. The slider (320) slides along the annular groove (330) and is connected to the support ring (110) to move in the radial direction to be fixed in the slots (340). The support rod (310) is arranged in a figure-7 shape to increase the support area.

8. A light-shielding device for an infrared light therapy instrument according to claim 7, characterized in that, The shielding mechanism (200) includes a shielding cloth, which is fixedly connected to the outside of each support rod (310) to wrap the support with the lower end open and the upper end contacting the bottom surface of the support ring (110). The shielding cloth is fixedly connected to the support rod (310) by Velcro.

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