LED photodynamic therapeutic instrument with light spot homogenizing device

Abstract

The utility model discloses an LED photodynamic therapeutic instrument with a light spot homogenizing device, and relates to the field of medical instruments. The machine base is provided with an operation screen, the upper end portion of the machine base is provided with a treatment arm, one end, away from the machine base, of the treatment arm is provided with a treatment lamp, an LED light source is arranged in the machine base, a conveying optical fiber is communicated between the LED light source and the treatment lamp, one end of the conveying optical fiber is connected with the LED light source, the treatment lamp comprises a lamp cap, and one end, away from the LED light source, of the conveying optical fiber is close to the lamp cap. A collimating lens is arranged between the lamp holder and the liquid core optical fiber, the focal length of the collimating lens is 15 mm, when the working distance of the treatment lamp is 10 cm, the size of an irradiated light spot is 6 cm, and a temperature measuring assembly is arranged between the collimating lens and the lamp holder and used for measuring the temperature of output light and transmitting data to an operation screen. The utility model has the characteristic of improving the uniformity of light spots.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of medical apparatus and instruments, especially to a light spot shaping and homogenizing device. BACKGROUND

[0002] Fresh red nevus is also called wine color spot, which is a common congenital vascular malformation. Fresh red nevus can cause serious psychological and social impact on patients. The earlier the treatment of fresh red nevus is, the better. At present, the treatment of fresh red nevus mainly includes pulsed dye laser and Heimpo fen photodynamic therapy.

[0003] For fresh red nevus with large area, thickening and nodules, and those with poor treatment effect after multiple pulsed dye treatment, photodynamic therapy should be used as soon as possible. LED photodynamic therapy instrument uses high-purity and high-power density red light, blue light and yellow light to irradiate the skin, which can change the cell structure, kill bacteria, provide a suitable environment for new cells, enhance the generation of new collagen elastin and collagen, promote cell growth, repair inflammatory acne and aging skin, relieve sunburn skin, and does not harm the skin, can whiten the skin and promote skin elasticity.

[0004] In view of the related technology in the above, at present, the LED treatment instrument is usually poor in light spot uniformity due to the limitation of LED light emission characteristics, which leads to uneven power density of the irradiation site and poor treatment effect. UTILITY MODEL CONTENTS

[0005] In order to improve the homogenization degree of light spot and improve the treatment effect, the application provides an LED photodynamic therapy instrument with light spot homogenization device.

[0006] The application provides an LED photodynamic therapy instrument with light spot homogenization device, which adopts the following technical scheme:

[0007] An LED photodynamic therapy instrument with light spot homogenization device, comprising a base, the base is provided with an operation screen, the upper end of the base is provided with a treatment arm, the end of the treatment arm away from the base is provided with a treatment lamp, the base is provided with an LED light source, a delivery optical fiber is communicated between the LED light source and the treatment lamp, the delivery optical fiber is a liquid core optical fiber, one end of the liquid core optical fiber is connected with the LED light source, the treatment lamp comprises a lamp head, the end of the liquid core optical fiber away from the LED light source is close to the lamp head, a collimating lens is arranged between the lamp head and the liquid core optical fiber, the focal length of the collimating lens is 15mm, the working distance of the treatment lamp is 10cm, the size of the irradiated light spot is 6cm, a temperature measuring assembly is arranged between the collimating lens and the lamp head, the temperature measuring assembly is used for measuring the temperature of the output light and transmitting data to the operation screen.

[0008] By adopting the technical scheme, when the device is used, the delivery optical fiber transmits the light of the LED light source to the collimating lens, the collimating lens outputs the collimated light, the temperature measuring assembly measures the temperature of the output light, and the measured data is transmitted back to the operation screen, since the liquid core optical fiber has large beam diameter and NA value and has homogenization characteristics, the liquid core optical fiber can realize more than 80% homogenization degree after collimation by the collimating lens.

[0009] Optionally, the LED light source is provided with an optical fiber interface, the delivery optical fiber is provided with a joint matched with the optical fiber interface, the joint is inserted into the optical fiber interface and detachably connected with the optical fiber interface, when the joint is connected with the optical fiber interface, the LED light source is communicated with the delivery optical fiber, and the delivery optical fiber delivers light to the treatment lamp.

[0010] By adopting the technical scheme, when the light of the treatment instrument does not reach the ideal effect, the delivery optical fiber can be replaced in time, which is beneficial to improve the convenience of use of the photodynamic treatment instrument.

[0011] Optionally, the delivery optical fiber is a dense arrangement optical fiber, the dense arrangement optical fiber is provided with a dense arrangement fixing member outside, the dense arrangement optical fiber communicates the light source with the treatment lamp, and the lamp head adopts a microlens array.

[0012] By adopting the technical scheme, the dense arrangement optical fiber is arranged in a dense arrangement mode by using the whole area optical fiber, the size of the whole optical fiber after dense arrangement is 10mm, the dense arrangement fixing member is used to fix the optical fiber after dense arrangement, after light is output by the dense arrangement optical fiber, the light beam is collimated by the collimating lens and then enters the microlens array for homogenization, and the spot homogenization degree can reach more than 90%, thereby effectively improving the spot homogenization degree.

[0013] Optionally, the lamp head is provided with a plurality of illumination range indicator lamps, the illumination range indicator lamps are arranged in the circumferential direction of the lamp head, the treatment lamp is provided with an infrared distance measuring probe, the infrared distance measuring probe is located on the side of the collimating lens close to the delivery optical fiber, and the infrared distance measuring probe is used to measure the distance between the delivery optical fiber and the action surface of the treatment lamp and transmit the data to the operation screen.

[0014] By adopting the technical scheme, before the device is used, the illumination range indicator lamps are used to select the irradiation range, and the infrared distance measuring probe is used to adjust the distance between the treatment lamp and the irradiation surface, which is beneficial to improve the convenience of use of the device.

[0015] Optionally, the treatment arm is provided with a plurality of support arms, one end of the support arm in the length direction is fixedly provided with a connecting piece, the plurality of support arms are sequentially connected in a head-to-tail mode, one of the support arms is rotationally connected with the connecting piece of the other support arm, and a rotary joint with damping is arranged at the rotationally connected position of the support arm and the connecting piece.

[0016] By adopting the technical scheme, the rotating joints are used to help the rotation of the support arms, and a force limiting the rotation of the support arms is applied to the support arms, so that the positions of the support arms after rotation are relatively fixed, multi-angle turning of the support arms is realized, and the activity range of the treatment arm is improved.

[0017] Optionally, the treatment lamp further comprises a lamp shell, the lamp shell is located at the side of the lamp head close to the treatment arm, the lamp shell is provided with a plurality of spray holes, the spray holes are uniformly arranged, an atomizing nozzle is arranged in each spray hole, a water tank is arranged in the base, the water tank is connected with a flow guide pipe, the flow guide pipe penetrates through the treatment arm and is connected with the atomizing nozzle, and one side of the water tank is connected with a pressure pump.

[0018] By adopting the technical scheme, the LED photodynamic therapy instrument irradiates the face of the patient for a long time, so that the temperature of the face of the patient is increased and the skin of the face is dry, the pressure pump is started after the irradiation of the equipment is completed, water in the water tank flows to the atomizing nozzle in the spray hole through the flow guide pipe under the action of the pressure pump, the atomizing nozzle atomizes and sprays the water to the irradiation surface of the equipment, and the arrangement of the atomizing nozzle and the water tank can effectively reduce the discomfort of the patient after treatment and improve the comfort of the equipment in use.

[0019] Optionally, a plurality of universal wheels are arranged at the lower end of the base, each universal wheel comprises a support seat and a rotating wheel, the support seat is fixedly connected with the base, the rotating wheel is rotatably connected with the lower end of the base, and the base is provided with a positioning member for limiting the rotating wheel.

[0020] By adopting the technical scheme, the universal wheels enable the equipment to be arbitrarily moved in space, and the equipment can be adjusted to the most comfortable use angle, the positioning member limits the movement of the equipment, so that the equipment does not move during use, and the convenience of use of the equipment is improved.

[0021] Optionally, the base is provided with a power switch for controlling the LED light source, a foot pedal is rotatably connected with the lower end of the base, a torsional spring is arranged between the base and the foot pedal, the torsional spring is used to drive the foot pedal to reset when the foot pedal and the base are relatively displaced, a power-off switch is arranged at the end of the foot pedal close to the base, the power-off switch is connected with the power switch, the power-off switch is triggered when the foot pedal is stepped on, and the power switch is turned off after the power-off switch is triggered.

[0022] By adopting the technical scheme, when the equipment runs abnormally or in an emergency, the power-off switch is triggered through the foot pedal, the power switch is turned off after the power-off switch is triggered, the equipment is quickly powered off, and the safety of the equipment is improved; and when no external force is applied, the foot pedal is always perpendicular to the base under the action of the torsional spring.

[0023] In summary, the present application has at least one of the following beneficial technical effects:

[0024] 1. The device uses, liquid core optical fiber beam diameter and NA value is large, itself has the homogenization characteristics, liquid core optical fiber light directly through the collimating lens collimation can achieve more than 80% homogenization, delivery optical fiber LED light transmission to collimating lens, collimating lens collimate light through the lamp output, temperature measuring component measures the temperature of the output light, and the measured data back to the operating screen, liquid core optical fiber improves the homogenization of the device output light;

[0025] 2. Dense optical fiber is to use the whole area of optical fiber dense, dense optical fiber size is 10mm after dense, using dense fixed piece to fix the dense optical fiber, after the light of dense optical fiber, the light beam collimated through the collimating lens into the microlens array for homogenization, the spot homogenization can reach more than 90%, effectively improve the spot homogenization;

[0026] 3. The photodynamic therapy instrument irradiates the patient's face for a long time, so that the temperature of the patient's face rises, and the skin of the face is dry. The setting of the atomizing nozzle and the water tank can effectively reduce the discomfort of the patient after treatment and improve the comfort of the device use. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a kind of LED photodynamic therapy instrument with light spot homogenization device overall structure schematic diagram.

[0028] Figure 2 It is a schematic diagram of LED light source structure.

[0029] Figure 3 It is the structure schematic diagram of embodiment two.

[0030] Figure 4 It is the overall structure schematic diagram of embodiment three.

[0031] Figure 5 It is a schematic diagram of water tank structure.

[0032] Figure 6 It is Figure 5 The enlarged schematic diagram of part A in

[0033] Explanation of reference signs: 1, base; 11, operation screen; 12, LED light source; 13, delivery optical fiber; 131, liquid core optical fiber; 132, optical fiber interface; 133, joint; 134, densely packed optical fiber; 135, densely packed fixing member; 2, treatment arm; 21, support arm; 22, connecting piece; 23, rotary joint; 3, treatment lamp; 31, lamp head; 311, microlens array; 32, collimating lens; 33, temperature measurement assembly; 34, infrared distance measuring probe; 35, lamp housing; 351, spray hole; 352, atomizing nozzle; 4, light range indicator; 5, water tank; 51, flow guide pipe; 6, pressure pump; 7, universal wheel; 71, support seat; 72, rotating wheel; 73, positioning member; 8, power switch; 9, foot pedal; 91, torsional spring; 92, power-off switch. DETAILED DESCRIPTION

[0034] The application is further described in detail below in combination with all the drawings.

[0035] The application discloses an LED photodynamic therapeutic instrument with light spot homogenization device.

[0036] Embodiment one

[0037] Reference Figure 1 The application discloses an LED photodynamic therapeutic instrument with light spot homogenization device, which comprises a base 1, wherein an upper end of the base 1 is provided with a treatment arm 2, and a treatment lamp 3 is arranged at an end of the treatment arm 2 away from the base 1; the treatment arm 2 supports the treatment lamp 3 and moves the treatment lamp 3 when the treatment arm 2 moves; the base 1 is provided with an operation screen 11, and all information related to the equipment is displayed and checked on the operation screen 11; the equipment is provided with an emergency stop button, and the equipment is powered off by pressing the emergency stop button when the equipment fails or is damaged during operation; a plurality of universal wheels 7 are arranged at a lower end of the base 1; the universal wheel 7 comprises a support seat 71 and a rotating wheel 72; the support seat 71 is fixedly connected with the base 1, and the rotating wheel 72 is rotationally connected with the lower end of the base 1; the base 1 supports the rotating wheel 72 through the support seat 71; the base 1 is provided with a positioning member 73 for limiting the rotating wheel 72; the universal wheel 7 improves the convenience of moving the base 1; after the base 1 is moved to a suitable position, the positioning member 73 is used to limit the movement of the equipment, thereby facilitating a doctor to use the equipment at the most suitable angle.

[0038] Reference Figure 2, the LED light source 12 is communicated with the therapeutic lamp 3 through a delivery optical fiber 13, the LED light source 12 is provided with a fiber interface 132, the delivery optical fiber 13 is provided with a joint 133 matched with the fiber interface 132, the joint 133 is inserted into the fiber interface 132 and detachably connected with the fiber interface 132, through the arrangement of the fiber interface 132 and the joint 133, the delivery optical fiber 13 can be replaced at any time, which is beneficial to maintaining the treatment effect of the equipment. When the joint 133 is connected with the fiber interface 132, the LED light source 12 is communicated with the delivery optical fiber 13, and the delivery optical fiber 13 delivers light to the therapeutic lamp 3, and the therapeutic lamp 3 delivers the light out of the equipment for treatment.

[0039] With reference to Figure 2 , the delivery optical fiber 13 is a liquid-core optical fiber 131, the beam diameter and NA value of the liquid-core optical fiber 131 are large, and the liquid-core optical fiber 131 has homogenization characteristics itself, the therapeutic lamp 3 is provided with a lamp head 31, one end of the liquid-core optical fiber 131 far away from the LED light source 12 is close to the lamp head 31, a collimating lens 32 is arranged between the lamp head 31 and the liquid-core optical fiber 131, and the light emitted by the liquid-core optical fiber 131 is directly collimated through the collimating lens 32, so that the homogenization degree of more than 80% can be realized. When the equipment is used, the focal length of the collimating lens 32 is 15 mm, and when the working distance of the therapeutic lamp 3 is 10 cm, the size of the irradiation spot is 6 cm.

[0040] The embodiment one of the present application has the following implementation principle: before the equipment is used, the equipment is moved to a suitable position through the universal wheel 7, and the equipment is fixed through the positioning member 73. When the equipment is used, the therapeutic arm 2 is moved, the therapeutic lamp 3 is moved to an irradiation position, the LED light source 12 is started, the liquid-core optical fiber 131 transmits the light emitted by the LED light source 12 to the therapeutic lamp 3, and the collimating lens 32 collimates the light entering the therapeutic lamp 3 and then outputs the light from the lamp head 31. The lamp head 31 is arranged in an array by using four 5w or more LEDs. The beam diameter and NA value of the liquid-core optical fiber 131 are large, and the liquid-core optical fiber 131 has homogenization characteristics itself, so that the light emitted by the liquid-core optical fiber 131 is directly collimated through the collimating lens 32, and the homogenization degree of more than 80% can be realized.

[0041] Embodiment two

[0042] With reference to Figure 3 The LED photodynamic therapy instrument with a spot homogenization device is different from the embodiment one in that the delivery optical fiber 13 is a dense arrangement optical fiber 134, the quartz optical fiber or the plastic optical fiber is densely arranged and then fixed and combined through a dense arrangement fixing member 135, the size of the densely arranged optical fiber is 10 mm, when the dense arrangement optical fiber 134 is used, the lamp head 31 of the therapeutic lamp 3 adopts a microlens array 311, and the microlens array 311 homogenizes the light.

[0043] The implementation principle of the second embodiment of the present application is that the LED light source 12 is directly connected with the densely arranged optical fiber 134, the light is emitted through the densely arranged optical fiber 134, the light beam is collimated through the collimating lens 32, and after collimation, the light beam enters the microlens array 311 for homogenization, and the homogenization degree of the light spot can reach more than 90%.

[0044] Embodiment three

[0045] With reference to Figure 4 The base 1 is provided with a power switch 8, and a foot pedal 9 is rotatably connected to the lower end of the base 1 in the vertical direction. A torsion spring 91 is arranged between the base 1 and the foot pedal 9, and is used to drive the foot pedal 9 to return to the original position when the foot pedal 9 is displaced relative to the base. The end of the foot pedal 9 close to the base 1 is provided with a power-off switch 92, which is connected to the power switch 8. When the foot pedal 9 is stepped on, the power-off switch 92 is triggered, and the power switch 8 is turned off after the power-off switch 92 is triggered.

[0046] With reference to Figure 4 The treatment arm 2 is provided with a plurality of support arms 21, and the support arms 21 are fixedly provided with connecting pieces 22 at one end along the length direction. The plurality of support arms 21 are sequentially connected end to end, one support arm 21 is rotatably connected to the connecting piece 22 of another support arm 21, and a rotary joint 23 with damping is arranged at the connecting position of the adjacent support arms 21. The adjacent support arms 21 are rotatably connected, so that the treatment arm 2 has a larger range of motion, and the support arms 21 can be bent to multiple angles, so that the support arms 21 are more convenient to use.

[0047] With reference to Figure 4 and Figure 5 The collimating lens 32 and the lamp holder 31 are provided with a temperature measuring assembly 33, which measures the temperature of the output light and transmits the data to the operation screen 11, so as to facilitate the doctor to refer and operate. The lamp holder 31 is provided with a plurality of light range indicator lamps 4, which are used to prompt the irradiation range of the equipment, so as to facilitate the adjustment of the treatment lamp 3 to the irradiation position in use. The treatment lamp 3 is provided with an infrared distance measuring probe 34, which is located on the side of the collimating lens 32 close to the delivery optical fiber 13. The infrared distance measuring probe 34 measures the distance between the treatment lamp 3 and the irradiation surface, and transmits the data to the operation screen 11, so as to facilitate the adjustment of the equipment according to the data given by the infrared distance measuring probe 34.

[0048] With reference to Figure 5 and Figure 6The lamp shell 35 is provided with a plurality of spray holes 351, the spray holes 351 are uniformly arranged on both sides of the treatment lamp 3, the spray holes 351 are provided with atomizing nozzles 352, the base 1 is provided with a water tank 5, the water tank 5 is connected with a flow guide pipe 51, the flow guide pipe 51 penetrates through the treatment arm 2 and is connected with the atomizing nozzles 352, one side of the water tank 5 is connected with a pressurizing pump 6, the pressurizing pump 6 is started after the equipment irradiation is completed. The pressurizing pump 6 pressurizes the water in the water tank 5 to the flow guide pipe 51, the water flows to the atomizing nozzles 352 in the spray holes 351 through the flow guide pipe 51, because the pressurizing pump 6 continuously applies pressure to the water tank 5, the water flow speed is fast, after the water flow passes through the atomizing nozzles 352, the patient irradiation position is cooled, and the patient's discomfort is reduced.

[0049] The third embodiment of the present application is implemented as follows: when the equipment is used, the treatment arm 2 is moved, the treatment lamp 3 is moved to the irradiation position according to the range prompted by the light irradiation range indicator 4 and the distance measured by the infrared distance measuring probe 34. The temperature measuring assembly 33 monitors the temperature of the light emitted by the treatment lamp 3, and cooperates with the operation screen 11 to keep the light temperature within the set range. If an accident occurs during the use of the equipment, the foot pedal 9 is stepped on, the foot pedal 9 triggers the power-off switch 92, and then the power supply of the equipment is turned off. After the equipment is normally used and irradiation is completed, the pressurizing pump 6 is started, the water in the water tank 5 flows to the atomizing nozzles 352 through the flow guide pipe 51 under the action of the pressurizing pump 6, the water flow is atomized, the patient irradiation position is cooled, the patient's discomfort is reduced, and the convenience of using the equipment is improved.

[0050] The above are preferred embodiments of the present application, and are not limited to the protection scope of the present application, therefore: any equivalent changes made according to the structure, shape, principle of the present application should be covered within the protection scope of the present application.

Claims

1. An LED photodynamic therapy device with a light spot homogenization device, comprising a base (1), wherein the base (1) is provided with an operation screen (11), a treatment arm (2) is provided at the upper end of the base (1), a treatment lamp (3) is provided at the end of the treatment arm (2) away from the base (1), an LED light source (12) is provided inside the base (1), and a transmission optical fiber (13) is connected between the LED light source (12) and the treatment lamp (3), characterized in that: The transmission optical fiber (13) is a liquid core optical fiber (131). One end of the liquid core optical fiber (131) is connected to the LED light source (12). The treatment lamp (3) includes a lamp head (31). The end of the liquid core optical fiber (131) away from the LED light source (12) is close to the lamp head (31). A collimating lens (32) is provided between the lamp head (31) and the liquid core optical fiber (131). The focal length of the collimating lens (32) is 15mm. When the working distance of the treatment lamp (3) is 10cm, the size of the irradiated spot is 6cm. A temperature measuring component (33) is provided between the collimating lens (32) and the lamp head (31). The temperature measuring component (33) is used to measure the temperature of the output light and transmit the data to the operation screen (11).

2. The LED photodynamic therapy device with a light spot homogenization device according to claim 1, characterized in that: The LED light source (12) is provided with an optical fiber interface (132), and the transmission optical fiber (13) is provided with a connector (133) adapted to the optical fiber interface (132). The connector (133) is inserted into the optical fiber interface (132) and is detachably connected to the optical fiber interface (132). When the connector (133) is connected to the optical fiber interface (132), the LED light source (12) is connected to the transmission optical fiber (13) and transmits light to the treatment lamp (3) through the transmission optical fiber (13).

3. The LED photodynamic therapy device with a light spot homogenization device according to claim 1, characterized in that: The transmission optical fiber (13) is a densely packed optical fiber (134), and a densely packed fixing piece (135) is sleeved on the outside of the densely packed optical fiber (134). The densely packed optical fiber (134) connects the light source to the treatment lamp (3), and the lamp head (31) adopts a microlens array (311).

4. The LED photodynamic therapy device with a light spot homogenization device according to claim 1, characterized in that: The lamp head (31) is provided with several illumination range indicator lights (4), which are arranged around the lamp head (31). The treatment lamp (3) is provided with an infrared ranging probe (34), which is located on the side of the collimating lens (32) close to the transmission optical fiber (13). The infrared ranging probe (34) is used to measure the distance between the transmission optical fiber (13) and the action surface of the treatment lamp (3) and transmit the data to the operation screen (11).

5. An LED photodynamic therapy device with a light spot homogenization device according to claim 1, characterized in that: The treatment arm (2) is provided with several support arms (21). One end of each support arm (21) is fixed with a connector (22) along its length. The several support arms (21) are connected end to end in sequence. For any two adjacent support arms (21), one support arm (21) is rotatably connected to the connector (22) of the other support arm (21). A damped rotary joint (23) is provided at the rotatable connection between the support arm (21) and the connector (22).

6. An LED photodynamic therapy device with a light spot homogenization device according to claim 1, characterized in that: The treatment lamp (3) also includes a lamp housing (35), which is located on the side of the lamp head (31) near the treatment arm (2). The lamp housing (35) has several spray holes (351) evenly arranged. An atomizing nozzle (352) is provided in the spray hole (351). A water tank (5) is provided in the base (1). A guide pipe (51) is connected to the water tank (5). The guide pipe (51) passes through the treatment arm (2) and is connected to the atomizing nozzle (352). A pressure pump (6) is connected to one side of the water tank (5).

7. An LED photodynamic therapy device with a light spot homogenization device according to claim 1, characterized in that: The lower end of the base (1) is provided with several casters (7). Each caster (7) includes a support base (71) and a swivel wheel (72). The support base (71) is fixedly connected to the base (1), and the swivel wheel (72) is rotatably connected to the lower end of the base (1). The base (1) is provided with a positioning element (73) for limiting the swivel wheel (72).

8. An LED photodynamic therapy device with a light spot homogenization device according to claim 1, characterized in that: The base (1) is equipped with a power switch (8), which is used to control the LED light source (12). A foot pedal (9) is rotatably connected to the lower end of the base (1). A torsion spring (91) is provided between the base (1) and the foot pedal (9). When the foot pedal (9) and the base (1) are relatively displaced, the torsion spring (91) is used to drive the foot pedal (9) to reset. A power-off switch (92) is provided at one end of the foot pedal (9) near the base (1). The power-off switch (92) is connected to the power switch (8). When the pedal is pressed, the power-off switch (92) is triggered. After the power-off switch (92) is triggered, the power switch (8) is turned off.

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