CN1861215B - Irradiation distance positioning method of phototherapy instrument and phototherapy instrument adopting the method - Google Patents

Abstract

A method for locating the irradiation distance of a phototherapy device, comprising the following steps: in a phototherapy device, two visible light semiconductor lasers are obliquely fixedly installed on both sides of a light source; The angle between the two lasers is calculated by the tangent trigonometric function relationship; when in use, the light source of the phototherapy device is moved vertically relative to the irradiated skin, when the two laser beams emitted by the two visible light semiconductor lasers are on the skin surface When the irradiation points on the skin coincide, the distance between the light source and the irradiated skin surface is the prescribed irradiation distance. Using this method, the irradiation distance can be determined conveniently and simply without touching damaged skin. The invention also relates to a variety of phototherapy instruments using the above method. These phototherapy instruments are convenient for distance determination, can be visually observed, simple in structure, and can be simply modified for existing phototherapy instruments, which are suitable for popularization and application.

Description

Irradiation distance positioning method of phototherapy instrument and phototherapy instrument adopting the method

technical field

The present invention relates to the field of skin disease treatment, a method and device for irradiating distance positioning in a phototherapy instrument used in dermatology. Specifically, the present invention relates to a method for using a laser to determine distance in a phototherapy instrument and phototherapy using the method instrument.

technical background

Phototherapy is widely used in dermatology. Patients usually need continuous treatment for 6 to 8 weeks or even longer. During phototherapy, the distance between the irradiation light source and the skin surface is directly related to the irradiance received by the skin surface lesion (irradiated to the unit area) The light power, unit: mW/cm2), the curative effect and side effects of phototherapy are all related to the irradiation dose (the product of irradiance and time).

Therefore, in order to ensure the curative effect and reduce the occurrence of adverse reactions, it is necessary to ensure that the skin lesion receives an accurate dose of irradiation, and then requires that the distance between the light source and the skin lesion must be relatively fixed for each irradiation.

In fact, each type of phototherapy machine is recommended to have an optimal irradiation distance, but few methods are provided to confirm the irradiation distance, which brings inconvenience to clinical practice. At present, there are people who install the steel tape on the phototherapy machine, and pull out the steel tape before the irradiation to adjust the distance between the phototherapy machine and the irradiated part and realize the fixed distance; Exposure to the skin, especially if pus or other bodily fluids are present in the lesion, can cause contamination or infection.

At present, clinically used phototherapy devices are generally divided into three types, including flexible light guide phototherapy devices for treating small-area or scattered skin lesions, and horizontal phototherapy devices or vertical phototherapy devices for treating large-area concentrated skin lesions. That type of phototherapy apparatus all has the defect of being unable to determine the distance conveniently and accurately.

Contents of the invention

In view of this, the object of the present invention is to provide a method for locating the irradiation distance of a phototherapy instrument. With this method, the irradiation distance can be determined conveniently and simply, and whether the specified distance can be determined by visual inspection without touching damaged skin.

In order to achieve the above object, the present invention provides a method for locating the irradiation distance of a phototherapy instrument, comprising the following steps:

1) In a phototherapy apparatus, two visible light semiconductor lasers are installed obliquely on both sides of the light source;

2) According to the distance between the phototherapy instrument and the irradiated skin surface, and the angle between the two lasers, the distance between the two lasers is calculated using the tangent trigonometric function relationship, and the visible light semiconductor laser is fixed on the In the phototherapy apparatus;

When in use, move the light source of the phototherapy device vertically relative to the irradiated skin. When the irradiation points of the two laser beams emitted by the two visible light semiconductor lasers coincide on the skin surface, the distance between the light source and the irradiated skin surface is the specified distance. the irradiation distance.

Preferably, the visible light semiconductor laser is composed of a laser diode.

Preferably, the two semiconductor lasers emit red light at the same time, or emit green light at the same time, or emit one red and one green light.

Preferably, the angle between the two semiconductor lasers is in the range of 45°-90°.

Preferably, the angle between the two semiconductor lasers is 60°.

Using the method of the present invention, it is convenient to observe whether the distance between the light source and the surface of the skin to be irradiated reaches the prescribed irradiation distance only by visual inspection, and in the process of adjusting the distance, the phototherapy instrument does not directly contact with the damaged skin, thereby The risk of contamination or infection is avoided.

In addition, according to the present invention, a variety of phototherapy instruments using the above method are also provided. These phototherapy instruments are convenient for distance determination, can be visually observed, simple in structure, and can be simply modified for existing phototherapy instruments, which are suitable for popularization and application. .

Therefore, on the one hand, according to a kind of phototherapy apparatus of the present invention, a kind of flexible light guide phototherapy apparatus is provided, and described flexible light guide phototherapy apparatus comprises a housing, is provided with a light source that is made of flexible optical fiber in the housing, Two visible light semiconductor lasers are fixedly arranged obliquely on both sides of the light source so that there is a selectable angle between the two visible light semiconductor lasers; the distance between the two semiconductor lasers is according to the phototherapy instrument The distance from the surface of the irradiated skin and the size of the included angle are calculated through the relationship of tangent trigonometric functions; when in use, the light source of the phototherapy device is moved vertically relative to the irradiated skin, when two visible light semiconductor lasers emit two laser beams When the irradiation points on the skin surface coincide, the distance between the light source and the irradiated skin surface is the specified irradiation distance.

On the other hand, according to a kind of phototherapy apparatus of the present invention, a kind of horizontal phototherapy apparatus is provided, and described horizontal phototherapy apparatus comprises a light box placed horizontally, and a group of special medical lamp tubes is arranged horizontally in the light box for An illumination light source is formed, and two visible light semiconductor lasers are fixedly arranged obliquely on both sides of the light source so that there is a selectable angle between the two visible light semiconductor lasers; the distance between the two semiconductor lasers is according to The distance between the phototherapy device and the surface of the irradiated skin is obtained by calculating the angle between the tangent trigonometric function; when in use, the light source of the phototherapy device is moved vertically relative to the irradiated skin, when two visible light semiconductor lasers emit When the irradiation points of the two laser beams on the skin surface coincide, the distance between the light source and the irradiated skin surface is the prescribed irradiation distance.

In yet another aspect, a phototherapy apparatus according to the present invention provides a vertical phototherapy apparatus, the vertical phototherapy apparatus includes a movable vertical phototherapy control device, a light box is installed on it, and a light box is arranged in the light box The light source is illuminated, and two visible light semiconductor lasers are fixedly arranged obliquely on both sides of the light source so that there is a selectable angle between the two visible light semiconductor lasers; the distance between the two semiconductor lasers is according to The distance between the phototherapy device and the surface of the irradiated skin and the size of the included angle are calculated through the relationship of tangent trigonometric functions; when in use, the light source of the phototherapy device is moved vertically relative to the irradiated skin, when two visible light semiconductor lasers emit When the irradiation points of the two laser beams coincide on the skin surface, the distance between the light source and the irradiated skin surface is the specified irradiation distance.

Description of drawings

Fig. 1 is the schematic diagram of the irradiation distance positioning method of the phototherapy instrument of the present invention;

Fig. 2 is the flexible light guide phototherapy apparatus adopting the method shown in Fig. 1;

Fig. 3 is another embodiment of phototherapy instrument as shown in Fig. 2;

Fig. 4 is a reference diagram of the use state of the phototherapy instrument shown in Fig. 2;

Fig. 5 is a reference diagram of the state of use of the horizontal phototherapy apparatus using the method shown in Fig. 1; and

Fig. 6 is a reference diagram of the use state of the vertical phototherapy apparatus adopting the method shown in Fig. 1 .

Detailed ways

As shown in FIG. 1 , it shows a schematic diagram of the method for locating the irradiation distance of the phototherapy apparatus of the present invention. Here, the flexible light guide phototherapy device is taken as an example, but it can be understood that the method of the present invention can also be applied to other types of phototherapy devices, which will be understood hereinafter.

According to the present invention, in the phototherapy device, two visible light semiconductor lasers 2, 2' are obliquely installed on both sides of the irradiating light output head 11. According to the distance H between the phototherapy device and the irradiated skin surface, two The angle 2α between two lasers, and then calculate the distance L between the two lasers 2, 2', and fix the lasers in the phototherapy apparatus.

In this method, the semiconductor lasers used can emit red light or green light at the same time, or one red and one green. In addition, semiconductor lasers are powered by batteries and have independent power switches. In the present invention, the angle 2α between the two laser beams can be any angle between 45° and 90°, and the preferred angle 2α is about 60°. When the included angle is small, the distance accuracy is slightly poor, and when the angle is large, the accuracy is high.

When in use, turn on the power of the laser to make it emit laser beams A, A', and move the light source of the phototherapy device vertically relative to the irradiated skin. When the two laser beams overlap on the skin surface, as shown in light point C in Figure 1, Then the distance between the light source and the irradiated skin surface is the prescribed irradiation distance. When the laser beam appears as two separate light spots C, C' on the surface of the irradiated skin, it indicates that the distance between the light source and the surface of the irradiated skin is less than or greater than the specified irradiation distance, and the optimal irradiation cannot be achieved Effect.

Using the method of the present invention, it is convenient to observe whether the distance between the light source and the surface of the skin to be irradiated reaches the prescribed irradiation distance only by visual inspection, and in the process of adjusting the distance, the phototherapy instrument does not directly contact with the damaged skin, thereby The risk of contamination or infection is avoided.

As shown in Fig. 2, the method of the present invention can be applied to the current flexible light guide phototherapy apparatus (the main part is not shown). Specifically, the light output head of the flexible light guide phototherapy instrument includes a housing 3, and a light source 1 composed of a flexible optical fiber is arranged in the housing 3. On both sides of the output end 11 of the flexible light guide, a visible light semiconductor laser 2, 2' composed of a laser diode is respectively provided. The laser 2, 2' is connected to a battery pack 4, and a switch 5 controls the power on and off. open.

In this flexible phototherapy instrument, visible light semiconductor lasers 2, 2' are obliquely installed on both sides of the output end 11 of the light source, and the distance between the two lasers is selected according to the distance H between the phototherapy instrument and the surface of the skin to be irradiated. The included angle 2α, and then calculate the distance between the two lasers 2, 2' through the relationship of tangent trigonometric functions, and fix the lasers in the phototherapy apparatus.

Fig. 3 shows a flexible light guide phototherapy instrument similar to Fig. 2, and the difference from the embodiment shown in Fig. 2 is that, in the embodiment shown in Fig. The phototherapy apparatus is installed on a bracket (not shown); while the phototherapy apparatus shown in FIG. 3 is not provided with the bracket mounting slot, therefore, the phototherapy apparatus is suitable for handheld use.

Fig. 4 has shown the use status of the embodiment shown in Fig. 2 and Fig. 3, thus it can be seen that the light spot C of the two laser beams emitted by the visible light semiconductor laser coincides at the irradiated skin. The distance between the skins is the prescribed irradiation distance, which can achieve the best therapeutic effect with minimal side effects.

As shown in Fig. 5 again, the situation that the method of the present invention is applied to a horizontal phototherapy instrument is shown in the figure. The phototherapy device is generally used to treat large areas and concentrated skin lesions. The horizontal phototherapy apparatus includes a light box 3 placed horizontally, in which a group of medical special-purpose lamp tubes 1 are arranged as a light source for irradiation, and visible light semiconductor lasers 2, 2' are respectively arranged on both sides of the lamp tubes. The power supply 4 is connected and controlled by a laser switch 5 .

In this phototherapy device, visible light semiconductor lasers 2, 2' are installed obliquely on both sides of the lamp tube, and the angle 2α between the two lasers is selected according to the distance H between the phototherapy device and the irradiated skin surface, Then, the distance between the two lasers 2, 2' is calculated through the relationship of tangent trigonometric functions, and the lasers are fixed in the phototherapy apparatus.

When in use, turn on the power of the laser to make it emit laser beams A, A'. As shown in the figure, it can be seen that the light spot C of the laser beam does not overlap on the surface of the irradiated skin at this time, indicating that the distance between the light source and the irradiated skin does not meet the specified irradiation distance, and it is necessary to further move the phototherapy device relative to the irradiated skin. distance between.

Referring again to Fig. 6, it shows the situation that the method of the present invention is applied to a vertical phototherapy apparatus. The phototherapy device is generally used to treat large-area and concentrated skin lesions, and the whole machine can be moved. This vertical phototherapy instrument comprises a movable vertical phototherapy control device 3, on which a light box 4 is installed, and visible light semiconductor lasers 2, 2' are arranged on the two sides corresponding to the light source 1 on the light box, and this laser is connected to a power supply ( not shown) connected and controlled by a laser switch (not shown).

In this phototherapy device, visible light semiconductor lasers 2, 2' are installed obliquely on both sides of the light box, according to the distance H between the phototherapy device and the surface of the skin to be irradiated, and the angle 2α between the two lasers is selected, and then , calculate the distance between the two lasers 2, 2' through the relationship of tangent trigonometric functions, and fix the lasers in the phototherapy apparatus.

When in use, turn on the power of the laser to make it emit laser beams A, A'. As shown in the figure, it can be seen that the spot C of the laser beam overlaps with the surface of the irradiated skin at this time, indicating that the distance between the light source and the irradiated skin meets the specified irradiation distance.

The method of the present invention and its application have been described in detail above in conjunction with specific embodiments, but it can be understood that although only three types of phototherapy instruments have been listed herein, those skilled in the art can also use it in the present invention. The method of the present invention is applied to other types of phototherapy devices within the scope of the essential spirit, and these applications still belong to the scope of protection claimed by the present invention.

Claims (25)

1. a Phototherapeutic instrument positioning irradiation distance is characterized in that, may further comprise the steps:

1) in a Phototherapeutic instrument, two visible light semiconductor lasers is installed obliquely in the both sides of light source;

2) according to the distance between described Phototherapeutic instrument and the illuminated skin surface, and the angle between two laser instrument, calculate two laser instrument distance therebetween by tangent trigonometric function relation, and described visible light semiconductor laser is fixed in the described Phototherapeutic instrument;

During use, vertically move the light source of Phototherapeutic instrument relative to illuminated skin, when the point of irradiation of two bundle laser on skin surface that sends when two visible light semiconductor lasers overlapped, then light source promptly was the irradiation distance of stipulating to the distance between the illuminated skin surface.

2. localization method as claimed in claim 1 is characterized in that described visible light semiconductor laser is made of laser diode.

3. localization method as claimed in claim 1 is characterized in that, described two semiconductor lasers send HONGGUANG simultaneously, perhaps send green glow simultaneously, perhaps sends one red one green light.

4. localization method as claimed in claim 1 is characterized in that, the angle between described two semiconductor lasers is in 45 °～90 ° scopes.

5. localization method as claimed in claim 4 is characterized in that, the angle between described two semiconductor lasers is 60 °.

6. flexible light guide Phototherapeutic instrument of realizing positioning irradiation distance, described flexible light guide Phototherapeutic instrument comprises a housing, in described housing, be provided with a light source that constitutes by flexible light-transmitting fibre, it is characterized in that, be set with two visible light semiconductor lasers obliquely in the both sides of described light source so that have the angle that to select between the two described visible light semiconductor lasers; Distance between the two described semiconductor lasers is calculated by tangent trigonometric function relation according to the size of distance between described Phototherapeutic instrument and the illuminated skin surface and described angle and is obtained; During use, vertically move the light source of Phototherapeutic instrument relative to illuminated skin, when the point of irradiation of two bundle laser on skin surface that sends when two visible light semiconductor lasers overlapped, then light source promptly was the irradiation distance of stipulating to the distance between the illuminated skin surface.

7. flexible light guide Phototherapeutic instrument as claimed in claim 6 is characterized in that described visible light semiconductor laser is made of laser diode.

8. flexible light guide Phototherapeutic instrument as claimed in claim 6 is characterized in that, described two semiconductor lasers send HONGGUANG simultaneously, perhaps send green glow simultaneously, perhaps sends one red one green light.

9. flexible light guide Phototherapeutic instrument as claimed in claim 6 is characterized in that, the angle between described two semiconductor lasers is in 45 °～90 ° scopes.

10. flexible light guide Phototherapeutic instrument as claimed in claim 9 is characterized in that, the angle between described two semiconductor lasers is 60 °.

11. flexible light guide Phototherapeutic instrument as claimed in claim 6 is characterized in that, described laser instrument is connected with a power supply and by a laser instrument on-off control.

12. flexible light guide Phototherapeutic instrument as claimed in claim 6 is characterized in that, described housing is provided with a support mounting groove.

13. horizontal Phototherapeutic instrument of realizing positioning irradiation distance, described horizontal Phototherapeutic instrument comprises the lamp box of a horizontal positioned, in described lamp box, flatly be provided with one group of medical special-purpose fluorescent tube to constitute radiation source, it is characterized in that, be set with two visible light semiconductor lasers obliquely in the both sides of described light source so that have the angle that to select between the two described visible light semiconductor lasers; Distance between the two described optical semiconductor lasers is calculated by tangent trigonometric function relation according to the size of distance between described Phototherapeutic instrument and the illuminated skin surface and described angle and is obtained; During use, vertically move the light source of Phototherapeutic instrument relative to illuminated skin, when the point of irradiation of two bundle laser on skin surface that sends when two visible light semiconductor lasers overlapped, then light source promptly was the irradiation distance of stipulating to the distance between the illuminated skin surface.

14. horizontal Phototherapeutic instrument as claimed in claim 13 is characterized in that described visible light semiconductor laser is made of laser diode.

15. horizontal Phototherapeutic instrument as claimed in claim 13 is characterized in that, described two semiconductor lasers send HONGGUANG simultaneously, perhaps send green glow simultaneously, perhaps send one red one green.

16. horizontal Phototherapeutic instrument as claimed in claim 13 is characterized in that, the angle between described two semiconductor lasers is in 45 °～90 ° scopes.

17. horizontal Phototherapeutic instrument as claimed in claim 13 is characterized in that, the angle between described two semiconductor lasers is 60 °.

18. horizontal Phototherapeutic instrument as claimed in claim 13 is characterized in that, described laser instrument is connected with a power supply and by a laser instrument on-off control.

19. vertical Phototherapeutic instrument of realizing positioning irradiation distance, described vertical Phototherapeutic instrument comprises a movable vertical type phototherapy control device, one lamp box is installed on it, in described lamp box, be provided with a radiation source, it is characterized in that, be set with two visible light semiconductor lasers obliquely in the both sides of described light source so that have the angle that to select between the two described visible light semiconductor lasers; Distance between the two described optical semiconductor lasers is calculated by tangent trigonometric function relation according to the size of distance between described Phototherapeutic instrument and the illuminated skin surface and described angle and is obtained; During use, vertically move the light source of Phototherapeutic instrument relative to illuminated skin, when the point of irradiation of two bundle laser on skin surface that sends when two visible light semiconductor lasers overlapped, then light source promptly was the irradiation distance of stipulating to the distance between the illuminated skin surface.

20. vertical Phototherapeutic instrument as claimed in claim 19 is characterized in that described visible light semiconductor laser is made of laser diode.

21. vertical Phototherapeutic instrument as claimed in claim 19 is characterized in that, described two semiconductor lasers send HONGGUANG simultaneously, perhaps send green glow simultaneously, perhaps send one red one green light.

22. vertical Phototherapeutic instrument as claimed in claim 19 is characterized in that, the angle between described two semiconductor lasers is in 45 °～90 ° scopes.

23. vertical Phototherapeutic instrument as claimed in claim 19 is characterized in that, the angle between described two semiconductor lasers is 60 °.

24. vertical Phototherapeutic instrument as claimed in claim 19 is characterized in that, described laser instrument is connected with a power supply and by a laser instrument on-off control.

25. vertical Phototherapeutic instrument as claimed in claim 19 is characterized in that described laser instrument is fixed on the described lamp box.

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