Photon therapeutic apparatus and optical power density calibration method thereof

Abstract

The invention discloses a photon therapeutic instrument and an optical power density calibration method thereof, and relates to the technical field of medical equipment. The photon therapeutic apparatus comprises a host and an optical fiber assembly, the host is provided with an optical power detection module, a host light source assembly and a master control module, and the optical fiber assembly is provided with a photon therapeutic head. The optical power of the photon treatment head is detected through the optical power detection module, and the optical power of the host light source assembly is correspondingly adjusted according to the optical power detection signal received by the main control module, so that the optical power density calibration of the photon treatment head is effectively realized, the accuracy and stability of optical power output are ensured, and the treatment effect is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of medical equipment, and in particular to a photon therapy device capable of calibrating the optical power density of a photon therapy head and a calibration method. Background Art

[0002] Photobiomodulation therapy is a treatment method that uses photon energy to affect biological metabolism. It has been proven to relieve pain, control inflammation and promote tissue repair. This therapy has been widely used in clinical treatment to treat inflammation on the human body surface. At present, the photon therapy devices used in clinical practice can be divided into two types: one is fixed irradiation, that is, a certain distance is maintained between the light source and the wound surface, and the light source is irradiated to the wound surface through a lens for treatment; the other is direct irradiation, that is, the light source is transmitted through a single optical fiber close to the wound surface for direct irradiation treatment. However, these two types of photon therapy devices have many defects. For example, the fixed irradiation photon therapy device has severe scattering of the light source after passing through the lens. Even if the irradiation distance is strictly controlled, it is impossible to ensure the uniformity of the light spot at the wound surface, the light power density and the precise light treatment dose, resulting in the penetration depth and saturation of the treatment beam in the inflamed tissue cannot meet the requirements of light treatment, resulting in uneven light treatment effects. Although direct irradiation has improved the uniformity of light, light power density and treatment dose, the treatment beam size is small and it is difficult to cover the size of most inflammatory wounds on the human body surface. In the case of multiple wounds, they need to be irradiated one by one. As a result, this type of photon therapy device is limited to the field of photon therapy of small wounds and obvious wounds such as dentistry.

[0003] In order to overcome these limitations, a new type of side-emitting photon therapy head has been developed, which is woven from multiple flexible optical fibers. The light source is transmitted to nearly a thousand bending points on the photon therapy head through a coupler to achieve close-range irradiation treatment with the wound surface. This photon therapy head has the characteristics of photoelectric separation, large luminous area, high irradiation density, and uniform luminescence. It can effectively solve the limitations of traditional photon therapy devices, and at the same time broaden the range of disease indications and treatment scenarios of photon therapy devices, and also brings the possibility of preventing inflammation of some wounds on the human body surface, such as the prevention and treatment of oral mucositis caused by radiotherapy and chemotherapy.

[0004] However, this new type of photon therapy head also brings new technical challenges: for example, the optical fiber woven into the photon therapy head is a component that directly contacts the wound surface, and usually needs to be implemented as a medical consumable for patients. This also leads to the need for the photon therapy head of the photon therapy device to be frequently replaced. When the light source is transmitted to the photon therapy head with different optical fiber braids through the coupler, the light flux will have different degrees of loss, resulting in large differences in the light power density of different photon therapy heads at the same gear, and the light power density is inaccurate, affecting the treatment effect. In addition, even if the photon therapy head is not replaced, the light power density of the same photon therapy head will change due to aging during long-term use, resulting in a decrease in the light power density at the same gear, and the light power density is inaccurate, affecting the treatment effect. Summary of the invention

[0005] The purpose of the present invention is to provide a photon therapy device and a calibration method capable of calibrating the optical power density of a photon therapy head, so as to solve the problem of inaccurate optical power density of the photon therapy device.

[0006] To solve the above problems, the present invention provides the following solutions.

[0007] A photon therapy device includes a host and an optical fiber component, wherein the host is provided with an optical power detection module, a host light source component and a main control module, and the optical fiber component is provided with a photon therapy head. The host is connected to the optical fiber component, and is used to transmit the light beam emitted by the host light source component through the optical fiber component and then emit it from the photon therapy head. The optical power detection module is used to detect the optical power of the photon therapy head. The main control module receives an optical power detection signal from the optical power detection module, and the main control module adjusts the optical power of the host light source component accordingly according to the received optical power detection signal.

[0008] Furthermore, the optical power detection module includes a calibration light source assembly and a calibration slot disposed inside the main unit, and a photosensitive signal detection slot disposed on the outer surface of the main unit housing. The calibration slot is used to detect the optical power of the calibration light source assembly. The photosensitive signal detection slot is used to detect the optical power of the photon therapy head.

[0009] Furthermore, the calibration tank is a closed cabin, and the cabin of the calibration tank is symmetrically provided with a light source entrance hole and a light source detection hole on both sides. The light source entrance hole is used to install the light source output device of the calibration light source assembly, and the size of the light source entrance hole is larger than the light beam size of the calibration light source assembly. The calibration photosensitive sensor is fixed outside the light source detection hole, and the photosensitive element of the calibration photosensitive sensor faces the light source detection hole; the size of the light source detection hole is smaller than the size of the photosensitive element of the calibration photosensitive sensor. The output end of the calibration photosensitive sensor is connected to the input end of the main control module.

[0010] Furthermore, the photosensitive signal detection slot is a closed cabin, and the cabin is provided with a hatch into which the photon therapy head can be inserted. A plurality of light source detection holes are provided on one side of the cabin of the photosensitive signal detection slot, and the photosensitive sensor is fixed outside the light source detection hole, and the photosensitive element of the photosensitive sensor faces the light source detection hole. The size of the light source detection hole is smaller than the size of the photosensitive element of the photosensitive sensor. The output end of the photosensitive sensor is connected to the input end of the main control module.

[0011] Furthermore, the calibration photosensor and the photosensor have the same model, parameters and specifications.

[0012] Furthermore, the host light source assembly and the calibration light source assembly have the same model, parameters and specifications.

[0013] Furthermore, the optical fiber assembly comprises a plurality of flexible optical fibers synthesized from polymer materials. A photon therapy head is provided at one end of the optical fiber assembly, and an optical fiber plug connector is provided at the other end. The photon therapy head is woven from a plurality of optical fibers with transparent braided wires as the weft.

[0014] The host is provided with an optical fiber plug connector, which can be plugged in and out to connect the host and the optical fiber component. The light beam emitted by the host light source component is transmitted to the transmission optical fiber through the interface between the optical fiber plug connector and the optical fiber plug connector, and then emitted from the photon therapy head.

[0015] The light power density calibration method of the photon therapy device proposed in the present invention has the following calibration steps.

[0016] Step 1: Connect the optical fiber connector to the optical fiber connector connection device of the host, and insert the photon therapy head into the photosensitive signal detection slot.

[0017] Step 2: The main control module obtains preset target parameters, including the optical power density value P and the uniformity value CV.

[0018] Step 3: The calibration light source component is started, and the main control module obtains the value interval range of the unit area photosensor of the calibration photosensor.

[0019] Step 4, the host light source assembly is started, and the main control module obtains the value range of the photosensitive signal per unit area of ​​the photosensor, and the main control module adjusts the output power of the host light source assembly accordingly until the phototherapy head light power calibration procedure is completed.

[0020] Furthermore, the range of the value of the photosensitive signal per unit area of ​​the calibrated photosensitive sensor is and , where AD1 is the light power density of the calibration light source component, and the value of the photosensitive signal detected by the calibration photosensitive sensor when the light power density of the calibration light source component is P; AD2 is the light power density of the calibration light source component when When , it is the value of the photosensitivity signal detected by the calibration photosensor; S1 is the beam area of ​​the calibration light source assembly.

[0021] Furthermore, the value interval range of the photosensitive signal per unit area of ​​the photosensitive sensor is and , where AD3 is the minimum photosensitive signal value detected by the photosensor in the photosensitive signal detection tank cabin, AD4 is the maximum photosensitive signal value detected by the photosensor in the same detection period, and S2 is the light source detection hole area.

[0022] The present invention has the following beneficial effects compared with the prior art.

[0023] 1. The present invention provides a photon therapy device with a photon therapy head optical power density calibration. The light flux loss during the transmission of the light source from the host light source through the coupler to the photon therapy head, as well as the change in light flux each time the light path is reconnected, are fully considered. By real-time detection of the photon therapy head optical power density value and adjustment of the host light source output power, the optical power density value of the photon therapy head is precisely modulated, which solves the problem of inaccurate optical power density value in the prior art and further improves the treatment effect.

[0024] 2. In response to the specific needs of different medical scenarios for light therapy doses, the photon therapy device of the present invention obtains the target photosensitive signal value range per unit area of ​​the photosensor by calibrating the laser, and adjusts the light power of the host light source so that the photosensitive signal value of the photon therapy head falls within the preset target range, thereby realizing the calibration of the optical power density value of the photon therapy head, effectively avoiding the complex calculation and calibration process between parameters such as light wavelength, optical power calibration curve, and photoelectric conversion, and improving the convenience and efficiency of the optical power density calibration of the photon therapy head.

[0025] 3. The photon therapy device of the present invention is particularly suitable for the calibration of the optical power density of a photon therapy head woven from multiple optical fibers, which realizes the quality control of the light emitted by such photon therapy heads, and further promotes the technical breakthroughs of the photon therapy head in terms of large light-emitting surface, high irradiation density, uniform light emission, high softness, multiple shaping, wearability, and paving. At the same time, combined with the separation of light, electricity, and heat of such photon therapy heads, the range of disease indications of the photon therapy device is greatly expanded. It has significant application advantages in various types of inflammation on the human body surface, especially large-area wounds, multi-lesion wounds, erosive ulcer wounds, difficult-to-heal wounds, and hidden wounds, providing a new type of medical device that is safer, more efficient, and more precise. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a three-dimensional diagram of a photon therapy device according to an embodiment of the present invention.

[0027] Figure 2 Schematic diagram of the internal framework of the photon therapy device according to an embodiment of the present invention.

[0028] Figure 3 This is a schematic diagram of the internal framework of the calibration chamber of the photon therapy device according to an embodiment of the present invention.

[0029] Figure 4 This is a schematic diagram of the internal framework of the photosensitive signal detection slot of the photon therapy device according to an embodiment of the present invention.

[0030] Legend: 100, host; 101, serial port display screen; 102, photosensitivity signal detection slot; 103, heat dissipation vents; 200, transmission optical fiber; 201, photon therapy head; 203, optical fiber connector; 301, main control module; 302, power supply; 303, host light source assembly; 304, calibration light source assembly; 305, optical fiber connector connection device; 401, calibration slot; 402, light source incident hole; 403, calibration photosensor; 404, light source detection hole; 501, light source detection hole; 502, photosensor. DETAILED DESCRIPTION

[0031] To further illustrate the various embodiments, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, a person of ordinary skill in the art should be able to understand other possible implementations and advantages of the present invention. The components in the figures are not drawn to scale, and similar component symbols are generally used to represent similar components.

[0032] Now combined with the attached Figure 1-4 The present invention is further described with specific embodiments.

[0033] The present invention provides a photon therapy device, comprising a host 100 and an optical fiber assembly. The host 100 is provided with an optical power detection module, a host light source assembly 303, a serial port display screen 101, a power supply 302, a heat dissipation vent 103, an optical fiber plug connector connection device 305 and a main control module 301.

[0034] In this embodiment, 400 flexible optical fibers are arranged in the optical fiber assembly. The photon therapy head 201 at one end of the optical fiber assembly is a light-emitting sheet formed by weaving optical fibers with transparent braided wires as the weft. An optical fiber connector 203 is arranged at the other end. The incident light ends of the 400 flexible optical fibers are fixed in the optical fiber connector 203 by four optical fiber bundlers, but the present invention is not limited thereto.

[0035] In this embodiment, the host light source assembly 303 and the calibration light source assembly 304 are semiconductor lasers of the same model, parameters and specifications, and heat dissipation ventilation holes 103 are provided on the side of the host 100 shell to increase the air circulation speed in the host and ensure the stability of the semiconductor laser.

[0036] In this embodiment, the power supply 302 is an AC-DC power supply, which is used to stably convert the 110V-240V voltage into a 12V constant voltage source, and can provide a maximum current of 10A to ensure the stability of the semiconductor lasers of the host light source assembly 303 and the calibration light source assembly 304.

[0037] In this embodiment, the host 100 is provided with a serial port screen 101, which is a serial port touch screen, and the serial port screen 101 communicates with the main control module 301 through a serial port. The serial port screen 101 is used to send treatment parameters to the main control module 301, including light power density value, uniformity value, treatment time, etc.

[0038] In this embodiment, the main control module 301 is an STMicroelectronics M3 main control board, which is used to receive data from the serial port screen 101 and the optical power detection signal from the optical power detection module, and judge and adjust the working states such as the corresponding optical power of the semiconductor laser of the host light source component 303 and the calibration light source component 304 according to the internal program logic.

[0039] The optical fiber connector connection device 305 is pluggable and connected to the optical fiber connector 203 to realize the optical path connection between the host 100 and the optical fiber assembly; the light beam emitted by the host light source assembly 303 is transmitted to the transmission optical fiber 200 through the interface between the optical fiber connector connection device 305 and the optical fiber connector 203, and is emitted from the photon therapy head 201. Preferably, in this specific embodiment, the optical fiber connector connection device 305 is pluggable and connected to the optical fiber connector 203, which is convenient for replacing the optical fiber assembly.

[0040] The optical power detection module is used to detect the optical power of the photon therapy head 201. In this embodiment, the optical power detection module includes a calibration light source assembly 304 and a calibration slot 401 disposed inside the host 100, and a photosensitive signal detection slot 102 disposed on the outer surface of the shell of the host 100; the calibration slot 401 is used to detect the optical power of the calibration light source assembly 304; and the photosensitive signal detection slot 102 is used to detect the optical power of the photon therapy head 201.

[0041] The calibration tank 401 is a closed cabin, and a light source incident hole 402 and a light source detection hole 404 are symmetrically arranged on both sides of the cabin. The light source incident hole 402 is used to install the light source output device of the calibration light source assembly 304. The size of the light source incident hole 402 is larger than the light beam size of the calibration light source assembly 304. The calibration photosensitive sensor 403 is fixed to the outside of the light source detection hole 404, and the photosensitive element of the calibration photosensitive sensor 403 faces the light source detection hole 404. The size of the light source detection hole 404 is smaller than the size of the photosensitive element of the calibration photosensitive sensor 403. The output end of the calibration photosensitive sensor 403 is connected to the input end of the main control module 301.

[0042] The photosensitive signal detection slot 102 is a closed cabin, and the cabin is provided with a hatch into which the photon therapy head 201 can be inserted, and five light source detection holes 501 are provided on one side of the cabin of the photosensitive signal detection slot 102. Five photosensitive sensors 502 are provided and fixed outside the light source detection holes 501, and the photosensitive elements of the photosensitive sensors 502 face the light source detection holes 501, and the size of the light source detection holes 501 is smaller than the size of the photosensitive elements of the photosensitive sensors 502. The output end of the photosensitive sensor 502 is connected to the input end of the main control module 301. The calibration photosensitive sensor 403 and the photosensitive sensor 502 have the same model, parameters, and specifications.

[0043] The light power density calibration method of the photon therapy device proposed in the present invention has the following calibration steps.

[0044] Step 1: The optical fiber connector 203 is connected to the optical fiber connector connection device 305 of the host 100, and the photon therapy head 201 is inserted into the photosensitive signal detection slot 102.

[0045] Step 2: Input the preset parameters of optical power density value P and uniformity value CV into the serial port display screen 101, and the main control module 301 obtains the preset target parameters.

[0046] The optical power density value P is the target setting value of the minimum optical power density of the phototherapy head 201. CV is the ratio of the target setting value of the maximum optical power density of the phototherapy head 201 to the target setting value of the minimum optical power density. CV is used to measure the uniformity of the optical power density in the phototherapy head 201 area. A target value is set for the maximum optical power density of the phototherapy head 201 .

[0047] Step 3: Start the calibration light source assembly 304, and the main control module 301 obtains the value interval range of the unit area photosensitivity signal of the calibration photosensor 403 and , where AD1 is the light power density of the calibration light source assembly 304, the light signal value detected by the calibration light sensor 403 when the light power density is P, and AD2 is the light power density of the calibration light source assembly 304 when the light power density is P. When , the value of the photosensitive signal detected by the calibration photosensitive sensor 403 is S1, and the light beam area of ​​the calibration light source assembly 304 is S2. to The numerical range of is the target unit area photosensitivity signal numerical range of the optical power density of the phototherapy head 201.

[0048] Step 4: Start the host light source component 303, and the main control module 301 obtains the value interval range of the unit area photosensitivity signal of the photosensor 502 and , where AD3 is the minimum photosensitive signal value detected by the photosensor 502 in the cabin of the photosensitive signal detection slot 102, AD4 is the maximum photosensitive signal value detected by the photosensor 502 during the same detection period, and S2 is the area of ​​the light source detection hole 501.

[0049] when Less than When the main control module 301 increases the output power of the host light source assembly 303 accordingly.

[0050] when Greater than and less than , Greater than When the main control module 301 reduces the output power of the host light source assembly 303 accordingly.

[0051] when Greater than or equal to , Less than or equal to When the light power calibration procedure of the photon therapy head 201 is completed, the serial port display screen 101 displays "calibration completed".

[0052] when Less than ,and Greater than When the optical power calibration procedure of the photon therapy head 201 is completed, the serial port display screen 101 displays "Calibration failed, it is recommended to reset parameters or replace the optical fiber component".

[0053] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A photon therapy device, characterized in that: It comprises a host and an optical fiber component; the host is provided with an optical power detection module, a host light source component and a main control module; the optical fiber component is provided with a photon therapy head; the host is connected to the optical fiber component, and is used to transmit the light beam emitted by the host light source component through the optical fiber component and then emit it from the photon therapy head; the optical power detection module is used to detect the optical power of the photon therapy head; the main control module receives the optical power detection signal from the optical power detection module, and the main control module adjusts the light output power of the host light source component accordingly according to the received optical power detection signal.

2. The photon therapy device according to claim 1, characterized in that: The optical power detection module includes a calibration light source assembly and a calibration slot arranged inside the host, and a photosensitive signal detection slot arranged on the outer surface of the host shell; the calibration slot is used to detect the optical power of the calibration light source assembly; the photosensitive signal detection slot is used to detect the optical power of the photon therapy head.

3. The photon therapy device according to claim 2, characterized in that: The calibration tank is a closed cabin; a light source entrance hole and a light source detection hole are symmetrically arranged on both sides of the cabin of the calibration tank; the light source entrance hole is used to install the light source output device of the calibration light source assembly; the size of the light source entrance hole is larger than the light beam size of the calibration light source assembly; the calibration photosensor is fixed on the outside of the light source detection hole, and the photosensitive element of the calibration photosensor faces the light source detection hole; the size of the light source detection hole is smaller than the size of the photosensitive element of the calibration photosensor; the output end of the calibration photosensor is connected to the input end of the main control module.

4. The photon therapy device according to claim 3, characterized in that: The photosensitive signal detection slot is a closed cabin, which is provided with a hatch for inserting the photon therapy head; a plurality of light source detection holes are provided on one side of the cabin of the photosensitive signal detection slot; the photosensor is fixed on the outside of the light source detection hole, and the photosensitive element of the photosensor faces the light source detection hole; the size of the light source detection hole is smaller than the size of the photosensitive element of the photosensor; the output end of the photosensor is connected to the input end of the main control module.

5. The photon therapy device according to claim 4, characterized in that: The calibration photosensor and the photosensor have the same model, parameters and specifications.

6. The photon therapy device according to claim 2, characterized in that: The host light source assembly and the calibration light source assembly have the same model, parameters and specifications.

7. The photon therapy device according to claim 1, characterized in that: The optical fiber assembly comprises a plurality of flexible optical fibers synthesized from polymer materials; a photon therapy head is provided at one end of the optical fiber assembly, and an optical fiber plug connector is provided at the other end; the photon therapy head is woven from a plurality of optical fibers with transparent braided wires as the weft; the host is provided with an optical fiber plug connector connection device; the optical fiber plug connector connection device and the optical fiber plug connector can be plugged in and out to realize the optical path connection between the host and the optical fiber assembly; the light beam emitted by the host light source assembly is transmitted to the transmission optical fiber through the interface between the optical fiber plug connector connection device and the optical fiber plug connector, and is emitted from the photon therapy head.

8. A method for calibrating the optical power density of the photon therapy device according to any one of claims 5 to 7, characterized in that: The calibration steps include: Step 1, the optical fiber connector is connected to the optical fiber connector connection device of the host, and the photon therapy head is inserted into the photosensitive signal detection slot; Step 2, the main control module obtains preset target parameters, including the optical power density value P and the uniformity value CV; Step 3: The calibration light source component is started, and the main control module obtains the value interval range of the unit area photosensor of the calibration photosensor; Step 4, the host light source assembly is started, and the main control module obtains the value range of the photosensitive signal per unit area of ​​the photosensor, and the main control module adjusts the output power of the host light source assembly accordingly until the phototherapy head light power calibration procedure is completed.

9. The method for calibrating the optical power density of a photon therapy device according to claim 8, characterized in that: The range of the value of the photosensitive signal per unit area of ​​the calibrated photosensitive sensor is and , where AD1 is the light power density of the calibration light source component, and the value of the photosensitive signal detected by the calibration photosensitive sensor when the light power density of the calibration light source component is P; AD2 is the light power density of the calibration light source component when When , it is the value of the photosensitivity signal detected by the calibration photosensor; S1 is the beam area of ​​the calibration light source assembly.

10. The optical power density calibration method of the photon therapy device according to claim 8, characterized in that: The value interval range of the photosensitive signal per unit area of ​​the photosensitive sensor is and , where AD3 is the minimum photosensitive signal value detected by the photosensor in the photosensitive signal detection tank cabin, AD4 is the maximum photosensitive signal value detected by the photosensor in the same detection period, and S2 is the light source detection hole area.

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