CN113058163A

CN113058163A - Portable LED photodynamic light source module for on-site first aid, and its equipment

Info

Publication number: CN113058163A
Application number: CN202110473940.2A
Authority: CN
Inventors: 姚敏; 王彩霞; 吴珊
Original assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Current assignee: Ninth Peoples Hospital Shanghai Jiaotong University School of Medicine
Priority date: 2021-04-29
Filing date: 2021-04-29
Publication date: 2021-07-02

Abstract

The application provides a portable LED photodynamic light source module and equipment thereof for on-the-spot first aid, light source module includes: the LED light source array is formed by uniformly distributing a plurality of LED point light sources on a substrate, wherein each LED point light source is a double-core patch lamp bead comprising a red LED chip and a blue LED chip so as to provide a single light source or a mixed light source; the micro lens array is packaged above the LED light source array to homogenize the light source; the light source modules can be seamlessly spliced according to the antibacterial requirement to form the surface light source module. This application can encapsulate into the unit module of certain size, the high transmissivity of certain structure with the design of blue red light single tube twin-core LED pointolite to the utilization has microlens array to realize the even output of light beam, realizes integrating into various shapes with the concatenation of homogenization area light source module taking cordwood system, and high efficiency, stability, portable photodynamic device of photosensitizer are matchd in final integration, with the photodynamic antibacterial treatment of the traumatic infection of adaptation calamity scene narrow and small space.

Description

Portable LED (light-emitting diode) photodynamic light source module for on-site first aid and equipment thereof

Technical Field

The application relates to the technical field of photodynamic therapy equipment, in particular to a portable LED photodynamic light source module for field first aid and equipment thereof.

Background

In China, serious natural disasters such as earthquakes, debris flows, typhoons and the like frequently cause serious casualties. Survivors are mostly trapped in narrow spaces formed after buildings and ground collapse, and are often accompanied with critical conditions such as cardiopulmonary injury, wound hemorrhage, severe infection and the like, the treatment difficulty is high, and the death rate is up to more than 90%. The life monitoring, supporting and treating of the critical wounded are started at the first time in the disaster site after the rescue gateway moves forward, so that the key measures for improving the success rate of the emergency wounded and treating the critical wounded and greatly reducing the site disability rate and the disease death rate are achieved, and meanwhile, new requirements are provided for the applicability of the critical first-aid equipment in narrow space of the disaster site.

On one hand, the existing first-aid equipment is mainly suitable for hospitals, has large volume, heavy weight and complex operation, and cannot meet the requirement of on-site treatment in narrow space; on the other hand, the emergency rescue equipment is limited by the severe environment and the narrow space in the disaster site, the analysis and judgment capacity of the rescue personnel on the physical state of the wounded and the dispatching and control capacity of various equipment are greatly interfered, and the conventional emergency rescue equipment has various manual operation steps and is difficult to adapt to the special requirements of the disaster site for rescue in the narrow space.

Therefore, the research and development of portable, miniaturized and intelligent emergency equipment has great significance for improving the capacity of rescuing and treating the wounded in the small space of the large natural disaster site.

Disclosure of Invention

In view of the above prior art's defect, the application provides a portable LED photodynamic light source module for scene first aid and equipment thereof for solve the problem that current first aid equipment is difficult to adapt to the special needs of the on-the-spot narrow and small space rescue of calamity.

To achieve the above and other related objects, there is provided a portable LED photodynamic light source module for emergency treatment in the field, the light source module comprising: the LED light source array is formed by uniformly distributing a plurality of LED point light sources on a substrate, wherein each LED point light source is a double-core patch lamp bead comprising a red LED chip and a blue LED chip so as to provide a single light source or a mixed light source; the micro lens array is packaged above the LED light source array to homogenize the light source; the light source modules can be seamlessly spliced according to the antibacterial requirement to form the surface light source module.

In an embodiment of the present application, by performing encapsulation or optical simulation on the light source modules with different structures, any one or more of the shape, area, illumination and distribution of each light source module may be adjusted, or any one or more of the type, number and arrangement of the LED point light sources may be adjusted, so that the spliced area of the light source modules eliminates the shadows in the spliced area of the modules.

In an embodiment of the present application, two different independent constant current driving circuits are respectively used for the LED point light sources of the inner ring and the outer ring in the LED light source array, so as to reduce the difference of optical density between the central position and the peripheral positions.

In an embodiment of the present application, the microlens array sequentially includes, from inside to outside: a first planar lens, a second planar lens, a convex lens, and a third planar lens.

In an embodiment of the present application, the position intervals of the LED point light sources on the LED light source array may be set based on the principle that the reflective substrate facilitates photon energy recovery, so that the distance between the LED point light sources at the edge positions of any two adjacent light source modules in the spliced surface light source module is equal to the distance between any two adjacent LED point light sources on the LED light source array.

In an embodiment of the present application, the light source module includes: a temperature control system, comprising: semiconductor refrigeration fins or radiators; and the precise temperature sensor is used for measuring a first temperature of the light source module and a second temperature of the external environment.

In an embodiment of the present application, the light wavelength of the red LED chip and the light wavelength of the blue LED chip are selected according to the spectral characteristics of the photosensitizer.

To achieve the above and other related objects, there is provided a portable LED photodynamic light source device for emergency treatment in the field, the device comprising: the light source module as described above; the touch liquid crystal display provides an interactive interface for selecting a function instruction or setting parameters; and the main control circuit drives or adjusts the power of each LED point light source in the light source module through the PWM signal according to the received functional instruction.

In an embodiment of the present application, the touch lcd and the main control circuit are used as a device main body, and the device main body and the individual light source module or the surface light source modules spliced by the light source modules are integrally arranged or separately and independently arranged, and communicate with each other by wire or wirelessly.

In an embodiment of the present application, the interactive interface includes any one or more of the following combinations: a control area for start or stop; a mode selection region comprising: any one or more of an intermittent mode, a mixed mode and a single light mode aiming at the blue light and the red light; a parameter setting area comprising: any one or more of power density, illumination intensity, running time and pause time; a state display area: the method comprises the following steps: the run time, and the run state.

To sum up, the application provides a portable LED photodynamic light source module and equipment thereof for on-the-spot first aid, light source module includes: the LED light source array is formed by uniformly distributing a plurality of LED point light sources on a substrate, wherein each LED point light source is a double-core patch lamp bead comprising a red LED chip and a blue LED chip so as to provide a single light source or a mixed light source; the micro lens array is packaged above the LED light source array to homogenize the light source; the light source modules can be seamlessly spliced according to the antibacterial requirement to form the surface light source module.

The following beneficial effects are achieved:

the utility model provides a with blue red light single tube twin-core LED pointolite design encapsulation become certain size, the unit module of the high transmissivity of certain structure, and utilize the light beam homogenization design that has the microlens array to carry out homogenization treatment to the unit module, form the module area light source of even output, it realizes integrated various shapes to take the concatenation of cordwood system with homogenization area light source module, the high efficiency of photosensitizer is finally integrated to match, it is stable, portable photodynamic device, with the photodynamic antibacterial treatment of the traumatic infection in the narrow and small space of adaptation disaster scene.

Drawings

Fig. 1 is a schematic structural diagram of a portable LED photodynamic light source module for emergency treatment according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of an LED light source array according to an embodiment of the present disclosure.

FIG. 3 is a schematic diagram of a technical route of a large-area homogenized output LED light source according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an LED point light source according to an embodiment of the present disclosure.

Fig. 5 is a schematic structural diagram of a microlens array according to an embodiment of the present application.

Fig. 6 is a schematic structural diagram of a surface light source module in an embodiment of the present application.

Fig. 7 is a schematic view illustrating an arrangement of LED light source arrays according to an embodiment of the present invention.

Fig. 8 is a technical route diagram of LED thermal management according to an embodiment of the present application.

Fig. 9 is a schematic structural diagram of a portable LED photodynamic light source device for emergency treatment according to an embodiment of the present application.

Fig. 10 is a schematic view of an interface of a light source device according to an embodiment of the present application.

Fig. 11 is a flowchart illustrating an operation of a light source apparatus according to an embodiment of the present application.

Detailed Description

The following description of the embodiments of the present application is provided by way of specific examples, and other advantages and effects of the present application will be readily apparent to those skilled in the art from the disclosure herein. The present application is capable of other and different embodiments and its several details are capable of modifications and/or changes in various respects, all without departing from the spirit of the present application. It is to be noted that the features in the following embodiments and examples may be combined with each other without conflict.

It should be noted that the drawings provided in the following embodiments are only schematic and illustrate the basic idea of the present application, and although the drawings only show the components related to the present application and are not drawn according to the number, shape and size of the components in actual implementation, the type, quantity and proportion of the components in actual implementation may be changed at will, and the layout of the components may be more complex.

Throughout the specification, when a part is referred to as being "connected" to another part, this includes not only a case of being "directly connected" but also a case of being "indirectly connected" with another element interposed therebetween. In addition, when a certain part is referred to as "including" a certain component, unless otherwise stated, other components are not excluded, but it means that other components may be included.

The terms first, second, third, etc. are used herein to describe various elements, components, regions, layers and/or sections, but are not limited thereto. These terms are only used to distinguish one element, component, region, layer or section from another element, component, region, layer or section. Thus, a first element, component, region, layer or section discussed below could be termed a second element, component, region, layer or section without departing from the scope of the present application.

Also, as used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context indicates otherwise. It will be further understood that the terms "comprises," "comprising," and/or "comprising," when used in this specification, specify the presence of stated features, operations, elements, components, items, species, and/or groups, but do not preclude the presence, or addition of one or more other features, operations, elements, components, items, species, and/or groups thereof. The terms "or" and/or "as used herein are to be construed as inclusive or meaning any one or any combination. Thus, "A, B or C" or "A, B and/or C" means "any of the following: a; b; c; a and B; a and C; b and C; A. b and C ". An exception to this definition will occur only when a combination of elements, functions or operations are inherently mutually exclusive in some way.

The existing first-aid equipment is mainly suitable for hospitals, is large in size, heavy in weight and complex in operation, cannot meet the requirements of on-site rescue in narrow and small spaces, and is limited by the severe environment of a disaster site and the constraint of the narrow and small spaces, the analysis and judgment capacity of rescue workers on the body states of wounded persons and the scheduling and control capacity of various kinds of equipment are greatly interfered, and the existing first-aid equipment has various manual operation steps and is difficult to adapt to the special requirements of on-site rescue in the narrow and small spaces of the disaster site. Therefore, the research and development of portable, miniaturized and intelligent emergency equipment has great significance for improving the capacity of rescuing and treating the wounded in the small space of the large natural disaster site.

The emergency rescue system is suitable for the problem that the existing emergency equipment is not suitable for emergency treatment of wounded people in narrow space, mainly breaks through the miniaturization, portability and intelligent design development and system integration technology of each equipment, develops and applies the on-site infection prevention and control key emergency equipment, and provides support for improving national disaster relief capacity and guaranteeing the health of people.

The LED light power equipment is developed in a set of miniaturization and light-weight aiming at the particularity of small space of a disaster site and the light power infection prevention and control equipment. By selecting an integrated single-tube double-core or multi-core LED light source with multi-spectral lines matched with the existing light treatment, photodynamic treatment, skin cosmetology, light acupuncture therapy and the like, researching the light treatment effect of the light sources on different tissues at the level of cells and whole animals, recording the influence of factors such as the wavelength, the power density, the energy density, the spot diameter, the light intensity distribution and the like of the light sources on the curative effect and the dose-effect relationship between the factors and the dose-effect relationship at an interface background, determining and storing recommended parameters of the LED light treatment instrument matched with different photosensitizers, and designing and realizing large-area homogenization output of the LED light source which can be freely combined and assembled; and designing and developing LED photodynamic infection prevention and control integrated portable equipment matched with a photosensitizer.

Specifically, the blue-red light single-tube double-core LED point light source is designed and packaged into a unit module with a certain size and a certain structure and high transmittance, and the unit module is subjected to homogenization treatment by utilizing a light beam homogenization design with a micro-lens array to form a module surface light source with uniform output. The homogenization area light source module is spliced in a building block mode to realize integration into various shapes, and finally, high-efficiency, stable and portable photodynamic medical equipment is integrated, and the area of an irradiation surface can be adjusted to adapt to photodynamic bacteriostatic treatment of traumatic infection in a narrow space of a disaster site.

The relevant principles and mechanisms for bacteriostatic treatment of red and blue light for traumatic infection are illustrated below:

the chemical system of the Canada Victoria university researches the synthesis of a blue light LED equipment nano material, synthesizes a nano material with the diameter less than 20nm and a composite commercial standard nano material with the luminescence in the blue light range, and utilizes the nano material to manufacture a blue light LED device; the advanced research institute of nano technology of the university of Han national Chengyu, researches the application of the surface relief optical grating technology in LED equipment, defines the interaction between the optical diffraction mode and the relief optical grating, realizes the controllability of the curvature, the period and the size of the surface relief optical grating, and improves the output coupling efficiency of the organic light-emitting diode. The molecular biology department of Spanish CIB-CSIC cells researches the cell and molecular biology mechanism of blue light sterilization, and proposes and proves that 447nm blue light inhibits bacteria by influencing the conformation of amyloid in the bacteria. The Shanghai university of medicine college of traffic attaches to the ninth people Hospital YaoMin susceptible group, and in the aspects of basic and clinical research in the fields of photomedicine and wound repair, systematic blue light up-regulation of phage gene to promote bacterial death mechanism research is carried out; research and development of novel photosensitizers in photodynamic antibacterial therapy; research on the mechanism of red light for promoting wound healing, and the like.

The existing LED high-energy red and blue light treatment system is a classical dermatological device which is brand-new and provided by GSD and integrates high-energy red and blue light, the combined irradiation curative effect of the LED high-energy red and blue light treatment system is far higher than that of pure blue light, the target cell is acted more accurately, the remarkable effect of killing propionibacterium acnes is generated, the pathogenic factors of acne can be fundamentally eliminated, and the acne removing effect is achieved. Meanwhile, the product can be used for sterilizing, accelerating wound healing, treating skin ulceration, and treating malignant diseases such as skin cancer and condyloma acuminatum by matching with photosensitizer. The LED high-energy red and blue light therapeutic instrument selects a narrow-spectrum light source to emit cold light, does not generate high heat, does not burn the skin, converts the light energy into intracellular energy, and is one of the safest and remarkable instruments for treating acne and tendering the skin.

From the above, the red and blue lights used in the present application have been widely used for the bacteriostatic treatment of traumatic infection.

As shown in fig. 1, a schematic structural diagram of a portable LED photodynamic light source module for emergency treatment in the embodiment of the present application is shown. As shown, the light source module 100 includes:

the LED light source array 120 is formed by a plurality of LED point light sources 160 uniformly distributed on the substrate 140, and each LED point light source 160 is a dual-core patch lamp bead including a red LED chip 162 and a blue LED chip 162 to provide a single light or mixed light source, as shown in fig. 2.

Preferably, each LED point light source 160 can emit either all red or blue light, or red and blue light, which can be crossed or mixed. For example, by alternately lighting up the red LED chip 162 and the blue LED chip 162; in addition, time division driving can be realized, and the red light LED and the near infrared (thermal effect) are carried out simultaneously in consideration of the cold and winter environment.

The LED light source arrays 120 may also be arranged at intervals, so that the splicing boundary effect is minimal, and based on the LEGO principle, a certain number of LEDs are combined into a unit LED light module. Furthermore, the distribution of the lamp bead layout can be optimized through Tracepro simulation.

In addition, the LED point light sources 160 on the inner and outer rings in the LED light source array 120 may also adopt two different independent constant current driving circuits, respectively, to reduce the difference of optical density between the central position and the peripheral position. For example, the driving current of the outer ring is larger than that of the inner ring to increase the optical density of the LED point light sources 160 at the peripheral positions.

In the present application, by performing encapsulation or optical simulation on the light source modules 100 with different structures, any one or more of the shape, area, illumination and distribution of each light source module 100 or any one or more of the type, number and arrangement of the LED point light sources 160 can be adjusted, so that the spliced area of the area light source module 200 can eliminate the shadows in the spliced area of the modules, thereby ensuring the large size, uniformity and stability of the overall light source output.

Briefly, an appropriate blue-red LED optical design technology is selected according to the spectral characteristics of a photosensitizer to provide an LED photodynamic light source device with uniform output characteristics of a large-size surface light source. The LED point light source 160 is a single-tube dual-core LED package technology and integrated with blue and red light dual wavelengths matched with the functional photosensitizer. Then, the LED light source array 120 is designed and packaged into a light source module 100 with a certain size and a certain structure, and the unit module is homogenized by using an optical system with a microlens array 180 structure, so as to form a surface light source module 200 capable of outputting uniformly. The homogenization surface light source module 200 is freely spliced into various shapes like building block type to form the homogenization light source with adjustable size and shape, is very suitable for the antibacterial requirement of various wound surfaces in disaster sites, and has advantages particularly when dealing with large-area infection prevention and control. By adopting different packaging structures and optical simulation of the unit modules, the reasonable layout of the unit modules is realized, the shadows of the module splicing areas are eliminated, and the large size, uniformity and stability of the whole light source output are ensured.

As shown in fig. 3, the technical route for designing a large-area homogenized LED light source according to the present application is shown, for example, the shape, area, illumination and distribution of the light source module 100 can be determined according to an optical design, then the type, number and arrangement of the LED point light sources 160 can be determined according to a light source modeling design, and then whether the light source module 100 meets the design requirements or not is determined according to computer optical simulation comparison, and finally the allowable range of the highest temperature can be determined.

In the present application, the first step is to develop a differentiated area light emitting optical design: in order to reduce the size of a single LED point light source 160, a blue and red two-in-one paster 3030 lamp bead can be adopted; design blue red double-core lamp pearl, as shown in fig. 4, the lamp pearl is 3030 paster lamp pearl: the red chip size can be 365 μm × 363 μm; the blue chip size was 732. mu. m.times.261. mu.m.

In an embodiment of the present application, the wavelengths of the light waves of the red LED chip 162 and the blue LED chip 162 are selected according to the spectral characteristics of the photosensitizer. The red wavelength range is typically: 625-740 nm, and the blue light wavelength range is as follows: 440-475 nm; the preferred red wavelength range of the present application, in terms of the spectral characteristics of the photosensitizer, is: 600-700 nm, and the blue light wavelength range is as follows: 400 to 490 nm.

In the present application, the microlens array 180 is packaged above the LED light source array 120 to homogenize the light source.

As shown in fig. 5, the microlens array 180 includes, in order from the inside to the outside: a first planar lens, a second planar lens, a convex lens, and a third planar lens.

For example, by homogenizing the output optical design with the LED unit module, the second planar lens LA2 is located at the focal plane of the first planar lens LA1, and when the light passes through LA1, a plurality of light beams of the small spot light source are formed, and then each of the small light beams passes through the objective lens array formed by combining the second planar lens LA2 and the convex lens FL, and is superimposed on the third planar lens FP. The microlens array 180 employs a combination of a plurality of lenses, and aims to homogenize the light source to the maximum extent, so as to avoid damage to the skin of the treatment area due to uneven light emission or reduce the treatment effect.

In one or more embodiments, the microlens array 180 can draw an optical device through UG modeling software, and then introduce the optical device into optical simulation software Tracepro for ray tracing, thereby analyzing luminous flux, light intensity, illumination, and the like. And finally, feedback analysis is carried out, and the model is modified so as to perfect the whole optical design.

In the present application, a plurality of the light source modules 100 may be seamlessly spliced according to the antibacterial requirement to form the surface light source module 200 for radiating a larger wound area, and the surface light source module 200 may be as shown in fig. 6.

In brief, the light source module 100 of the homogenizing surface is spliced like building blocks to realize integration into various shapes, and finally, high-efficiency, stable and portable photodynamic equipment matched with a photosensitizer is integrated to adapt to photodynamic bacteriostatic treatment of traumatic infection of not less than 70cm2 in a narrow space of a disaster site.

For example, through the optical/thermal simulation of the LED lamp bead, the size of a single light source module 100 may be 12 × 12mm, the size of a substrate 140 may be 120 × 120mm, and the size of a receiving screen may be 90 × 90 mm; by the formula

Calculating the illumination uniformity of the receiving surface, wherein u represents the illumination uniformity on the illumination surface,

denotes the average value of illuminance, E_maxIllumination maximum on the illuminated surface. When the light intensity of the illumination area is half of the circumference, the illumination uniformity of the receiving screen can reach 81%.

In an embodiment of the present application, the position intervals of the LED point light sources 160 on the LED light source array 120 may be set based on the principle that the reflective substrate 140 facilitates photon energy recovery, so that the distance between the LED point light sources 160 at the edge positions of any two adjacent light source modules 100 in the spliced surface light source module 200 is equal to the distance between any two adjacent LED point light sources 160 on the LED light source array 120.

As shown in fig. 7, the reflective substrate 140 facilitates photon energy recovery, and can precisely set the interval of the LED positions, and ensure the interval when the unit modules are spliced, where the interval between the splicing seams is equal to the interval of the LED light emitting array, for example, the interval of the LED point light sources 160 on the LED light source array 120 is set according to a + b ═ c, and g + m ═ p.

Preferably, in order to meet the requirement of large-area antibiosis, the application can also realize uniform output of a large-size area light source according to the nano microstructure polymer film for LED light diffusion, the light guide plate technology and the diffusion plate technology; in order to achieve the aim of quick antibiosis, the LED integrated portable equipment can also utilize an LED luminous power PWM modulation system, and improve the luminous energy utilization efficiency through a prism film technology so as to design the LED integrated portable equipment based on continuous dynamic and high-efficiency broad-spectrum photosensitizer.

In order to enhance the stability of large-area antibiosis, the LED heat dissipation and temperature control system is optimized, and the sudden reduction of the LED efficiency caused by temperature drift is inhibited.

In an embodiment of the present application, the light source module 100 includes: a temperature control system, comprising: semiconductor refrigeration fins or radiators; the precision temperature sensor measures a first temperature of the light source module 100 and a second temperature of an external environment.

Optionally, the temperature control system further comprises: the processor is used for starting one or more radiators to dissipate heat when the first temperature exceeds a first preset temperature value or the temperature difference between the first temperature and the second temperature exceeds a second preset value.

It should be noted that, under the action of the external electric field, in the process of continuously recombining electrons and holes inside the LED, only 15% to 25% of the energy is converted into light energy, and the remaining 75% to 85% of the energy is converted into heat energy in the form of lattice oscillation. Since the operating characteristics of semiconductor devices are very sensitive to temperature, if heat cannot be dissipated effectively, the luminous efficiency, luminous flux, and lifetime of the LED are seriously affected. Therefore, effective thermal management is an important guarantee whether the LED photodynamic infection prevention and control equipment can reliably run for a long time. In consideration of the low power consumption and the portable requirement of the equipment, the efficient and reasonable heat dissipation mode is designed through the heat dissipation model design to meet the heat dissipation requirement of the LED light source to the maximum extent, and the research route is shown in FIG. 8.

For example, the simulation analysis can be performed by means of thermal analysis software ANSYS and modeling software APDL, then the physical test analysis is performed in a narrow space, and the optimal heat dissipation scheme is screened out through optimizing the heat dissipation area, the material property and the like, so that the optimal heat dissipation model of the large-area wound healing integrated LED photodynamic equipment in the narrow space is determined, and the structure of the heat sink is finally determined. The temperature of the LED unit module and the temperature of the external environment are respectively measured by the precise temperature sensor, and the intelligent temperature control circuit design is carried out through the temperature difference between the LED unit module and the external environment, so that the safe and stable operation of the LED photodynamic system is ensured.

In addition, the key to affecting the effective stable output of the LED beam is the design of the heat dissipation system. This application adopts passive form heat dissipation mode, comes furthest's the heat dissipation requirement that satisfies the LED light source through the high-efficient reasonable radiator of design. The thermal analysis software ANSYS and the modeling software APDL can be combined with narrow space entity test analysis, and an optimal heat dissipation scheme is screened out after optimization design, so that an optimal heat dissipation model of the large-area wound treatment integrated LED photodynamic equipment in the narrow space is defined, the structure of the heat radiator is finally determined, and the stability and the safety of the LED photodynamic system are further improved.

In the application, a semiconductor cooling system and a temperature regulating system matched with an integrated LED matrix can be designed, so that the structural irrational caused by conventional cooling and the wavelength drift phenomenon caused by temperature fluctuation are thoroughly changed. The multi-spectral-band integrated generation technology is realized, the existing high-power LED chip generates four treatment spectral bands according to clinical requirements so as to adapt to the requirements of clinical combination, and due to the integrated output of the multi-spectral bands and the application of a convenient switching system, the multi-spectral time sequence output becomes possible, so that the tissue observation under the dynamic irradiation condition can be clinically developed.

Overall, in the optical transmission system, because high-power LED generally adopts the technique that takes place of the integrated area source of multi-disc, the divergence angle is greater than 150 degrees usually, and luminous area is big, and the loss that the light arrived the tissue is big, and the facula is inhomogeneous, because this application adopts single tube multi-wavelength LED pointolite 160 luminous technique to replace original single wavelength light source to combine the light beam plastic technique of LED micro-nano structure diffusion barrier, can conveniently obtain various shapes, the light transmissivity is high, output even light source irradiation system is in order to adapt to the needs of clinical treatment.

In addition, the LED light source module 100 of the present application satisfies the requirement that the light source area of the wavelength matched with the photosensitizer and effective irradiation is larger than 70cm²And the light intensity distribution of the irradiation is uniform. Therefore, through optical simulation, reasonable layout of the unit modules is realized, dark areas of splicing areas of the splicing modules are eliminated, and the output uniformity of the whole large-size surface light source is ensured.

As shown in fig. 9, a schematic structural diagram of a portable LED photodynamic light source device for emergency treatment in the embodiment of the present application is shown. As shown, the apparatus comprises: a portable LED photodynamic light source device for emergency treatment in the field, said device comprising:

a single light source module 100 as shown in fig. 1 or a surface light source module 200 formed by splicing a plurality of light source modules 100 as shown in fig. 6;

the touch liquid crystal display 300 provides an interactive interface for selecting a function instruction or setting parameters;

the main control circuit drives or adjusts the power of each LED point light source 160 in the light source module 100 through the PWM signal according to the received function command.

For example, the device is operated by the touch liquid crystal screen 300 through an embedded design, the LED red and blue light is driven and controlled through PWM, and the photodynamic bacteriostatic treatment of the large-area traumatic infection is finally realized through the matching of the photosensitizer.

For example, the master control circuit of the device can adopt stm32 series; the touch liquid crystal screen 300 can adopt a special touch screen for Divintech medical treatment; adjusting power through a PWM (pulse-width modulation) technology, and calibrating through a background; rechargeable lithium batteries may be used.

In the present application, the touch lcd 300 and the main control circuit may be used as a device main body, which is integrally disposed with the light source module 100 alone or the surface light source module 200 formed by splicing a plurality of the light source modules 100, as shown in fig. 9, or separately and independently disposed, and performs communication through wire or wireless.

As shown in fig. 10, the interactive interface includes any one or more of the following combinations:

a control area for start or stop; a mode selection region comprising: any one or more of an intermittent mode, a mixed mode and a single light mode aiming at the blue light and the red light;

a parameter setting area comprising: any one or more of power density, illumination intensity, running time and pause time; preferably, the power density is adjustable: 1-70 mW/cm²(ii) a The irradiation time is adjustable: the time is 1-60 min adjustable; the LED light uniformity is more than or equal to 80 percent; the timing range of the light source irradiation time is 0-60 minutes.

A state display area: the method comprises the following steps: the run time, and the run state.

For example, the device is described in operation as shown in fig. 11, with blue/red light selected according to treatment; according to the treatment mode selection: intermittent treatment, mixed treatment and single-light continuous treatment; the parameters can set power density, treatment time and intermittence time; the treatment running time can be observed in real time; clicking to start treatment and clicking to stop treatment; in addition, the temperature control can be carried out according to the temperature detected by the background after the equipment is started, so that the normal temperature is ensured.

It should be noted that the device based on the single light source module 100 of the present application can satisfy the requirement of not less than 70cm²The irradiation area of (a) is greater than the item index such as 80% of light uniformity, but considering that the wound of the wounded person is random in the accident scene of various major disasters, it may be necessary to rapidly treat the wound of the wound with an excessively large area, and it may take a long time to treat the wound of the wound with a large area by the gradual movement and accumulation of the devices of the single light source module 100. Therefore, the important attribute of seamless splicing at the accident site needs to be considered in the device, a plurality of light source modules 100 can be seamlessly spliced together in a short time, and the treatment of a large-area wound is quickly responded. During seamless splicing, the main point is to make the illuminance of each light source module 100 at the spliced seam equal after splicing, and simultaneously consider the mechanical connection strength and the connection convenience of the spliced light source modules 100.

In summary, the present application proposes to design and package a blue-red single-tube dual-core LED point light source into a unit module with a certain size and a certain structure and a high transmittance, and to perform homogenization on the unit module by using a light beam homogenization design with a microlens array to form a module surface light source with uniform output. The homogenization area light source module is spliced in a building block mode to realize integration into various shapes, and finally, high-efficiency, stable and portable photodynamic identification matched with a photosensitizer is integrated, so that the device can be suitable for photodynamic antibacterial treatment of traumatic infection in narrow space of a disaster site.

The application effectively overcomes various defects in the prior art and has high industrial utilization value.

The above embodiments are merely illustrative of the principles and utilities of the present application and are not intended to limit the application. Any person skilled in the art can modify or change the above-described embodiments without departing from the spirit and scope of the present application. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present application shall be covered by the claims of the present application.

Claims

1. a portable LED photodynamic light source module for on-site emergency, is characterized in that, described light source module comprises:

The LED light source array consists of a plurality of LED point light sources evenly distributed on the substrate, each LED point light source is a dual-core SMD lamp bead including a red LED chip and a blue LED chip to provide single light or mixed light source;

a microlens array, packaged above the LED light source array, to homogenize the light source;

Wherein, a plurality of the light source modules can be seamlessly spliced according to antibacterial requirements to form a surface light source module.

2. The portable LED photodynamic light source module for on-site first aid according to claim 1, wherein the shape, area, illuminance of each light source module can be adjusted by encapsulating or optical simulation of different structures for the light source module. , and any one or more of the distribution, or adjust any one or more of the type, quantity, and arrangement of LED point light sources, so that the spliced surface light source modules eliminate shadows in the module splicing area.

3. The portable LED photodynamic light source module for on-site first aid according to claim 1, wherein the LED point light sources of the inner ring and the outer ring in the LED light source array respectively adopt two different independent constant current drives circuit to reduce the difference in optical density between the center position and the surrounding position.

4. The portable LED photodynamic light source module for on-site first aid according to claim 1, wherein the microlens array sequentially includes from inside to outside: a first plane lens, a second plane lens, a convex lens, and a third plane lens.

5. The portable LED photodynamic light source module for on-site first aid according to claim 1, wherein the position interval of each LED point light source on the LED light source array can be set based on the principle that the reflective substrate is conducive to photon energy recovery, so that the The distance between the LED point light sources at the upper edge positions of any two adjacent light source modules in the spliced surface light source modules is equal to the distance between any two adjacent LED point light sources on the LED light source array.

6. The portable LED photodynamic light source module for on-site first aid according to claim 1, wherein the light source module comprises: a temperature control system, comprising:

Semiconductor refrigeration sheet or radiator;

The precision temperature sensor is used to measure the first temperature of the light source module and the second temperature of the external environment.

7 . The portable LED photodynamic light source module for on-site emergency according to claim 1 , wherein the light wavelengths of the red LED chips and the blue LED chips are selected according to the spectral characteristics of the photosensitizer. 8 .

8. A portable LED photodynamic light source device for on-site first aid, characterized in that the device comprises:

The light source module according to any one of claims 1-7 or a surface light source module assembled with a plurality of the light source modules;

Touch the LCD screen to provide an interactive interface for selecting function commands or setting parameters;

The main control circuit drives or adjusts the power of each LED point light source in the light source module through the PWM signal according to the received functional instructions.

9 . The portable LED photodynamic light source device for on-site first aid according to claim 8 , wherein the touch liquid crystal screen and the main control circuit are used as the main body of the device, and the main body of the device is connected with the separate light source module or multiple The surface light source modules that are spliced with the light source modules are integrally arranged, or are arranged separately and independently, and communicate through wired or wireless communication.

10. The portable LED photodynamic light source device for on-site first aid according to claim 8, wherein the interactive interface comprises any one or more of the following combinations:

Start or stop the control area;

Mode selection area, including: any one or more of intermittent mode, mixed mode, and single-light mode for blue light and red light;

Parameter setting area, including: any one or more of power density, illuminance, running time, and intermittent time;

Status display area: including: elapsed time and running status.