Technical background
Phototherapy is commonplace in the application of department of dermatologry.The patient need carry out the treatment of 6 to 8 weeks even longer time usually continuously, during phototherapy, distance between radiation source and the skin surface is far and near to be directly connected to the irradiance that skin surface skin lesion place receives and (to shine the luminous power on the unit are, unit: mW/cm2) just, the phototherapy curative effect is all relevant with exposure dose (product of irradiance and time) with side effect.
Therefore, in order to ensure curative effect with reduce the generation of untoward reaction, should guarantee that the skin lesion position accepts dose irradiation accurately, and then when requiring each irradiation, the necessary relative fixed of the distance of light source and skin lesion.
In fact, every kind of type phototherapy unit is all advised best irradiation distance, but the method for confirming irradiation distance seldom is provided, and this makes troubles for clinical practice.At present, existing people is installed in ribbon on the phototherapy unit, earlier ribbon is pulled out and is adjusted the distance between phototherapy unit and the illuminated position and realize spacing before irradiation; Yet this method is that a hard thing is touched on the skin inevitably, particularly when there are pus or other body fluid in the skin lesion place, can pollute or infect.
At present, the Phototherapeutic instrument that has adopted clinically generally is divided into three kinds, the flexible light guide Phototherapeutic instrument that comprises treatment small size or dispersion skin lesion, be used for the treatment of large tracts of land and concentrate the horizontal Phototherapeutic instrument or the vertical Phototherapeutic instrument of skin lesion, but the Phototherapeutic instrument of the sort of type no matter all exists can't make things convenient for and the defective of spacing exactly.
Summary of the invention
Given this, the object of the present invention is to provide a kind of Phototherapeutic instrument positioning irradiation distance, utilize this method, can make things convenient for and definite simply irradiation distance, only need visually just can determine whether to reach predetermined distance, and needn't contact damage skin.
For achieving the above object, the invention provides a kind of Phototherapeutic instrument positioning irradiation distance, 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, utilize tangent trigonometric function relation to calculate two laser instrument distance therebetween, and described visible light semiconductor laser is fixed in the described Phototherapeutic instrument.
Preferably, described visible light semiconductor laser is made of laser diode.
Preferably, described two semiconductor lasers send HONGGUANG simultaneously, perhaps send green glow simultaneously, perhaps send one red one green light.
Preferably, the angle between described two semiconductor lasers is in 45 °~90 ° scopes.
Preferably, the angle between described two semiconductor lasers is about 60 °.
In addition, also provide the multiple Phototherapeutic instrument that utilizes said method according to the present invention, these Phototherapeutic instrument spacings are convenient, can observe intuitively with range estimation, and are simple in structure, and can transform simply existing Phototherapeutic instrument, are fit to promotion and application.
Therefore, on the one hand, according to a kind of Phototherapeutic instrument of the present invention, a kind of flexible light guide Phototherapeutic instrument is provided, 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, two visible light semiconductor lasers are installed obliquely in the both sides of described light source; 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, and described visible light semiconductor laser is fixed in the described Phototherapeutic instrument.
On the other hand, according to a kind of Phototherapeutic instrument of the present invention, a kind of horizontal Phototherapeutic instrument is provided, 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, two visible light semiconductor lasers are installed obliquely in the both sides of described light source; 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, and described visible light semiconductor laser is fixed in the described Phototherapeutic instrument.
Again on the one hand, according to a kind of Phototherapeutic instrument of the present invention, vertical Phototherapeutic instrument is provided, 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, two visible light semiconductor lasers are installed obliquely in the both sides of described light source; 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, and described visible light semiconductor laser is fixed in the described Phototherapeutic instrument.
The specific embodiment
As shown in Figure 1, there is shown the sketch map of Phototherapeutic instrument positioning irradiation distance of the present invention.Is example at this with the flexible light guide Phototherapeutic instrument, but is appreciated that method of the present invention can also be applied in the Phototherapeutic instrument of other type, and this can understand hereinafter.
According to the present invention, in Phototherapeutic instrument, in the both sides of irradiates light delivery 11 two visible light semiconductor lasers 2,2 ' are installed obliquely, according to the distance H between this Phototherapeutic instrument and the illuminated skin surface, and select two angle 2 α between the laser instrument, then, calculate two laser instrument 2,2 ' distance L therebetween, and laser instrument is fixed in the Phototherapeutic instrument.
In this method, employed semiconductor laser can be to send HONGGUANG simultaneously, also can send green glow simultaneously, perhaps can be one red one green.In addition, semiconductor laser is battery-powered, and independently on and off switch is arranged.In the present invention, angle 2 α between two laser beams can be chosen in any angle between 45 °~90 °, and preferable angle 2 α are about 60 °.Angle angle hour spacing precision is poor slightly, precision height when angle is big.
During use, the power supply of opening laser instrument makes its A that gives off laser beam, A ', vertically moves the light source of Phototherapeutic instrument relative to illuminated skin, when two bundle laser overlap on skin surface, shown in luminous point C among Fig. 1, then light source promptly is the irradiation distance of regulation to the distance between the illuminated skin surface.When laser beam is rendered as two luminous point C, C ' that separate on illuminated skin surface, then show the distance of light source between the illuminated skin surface less than or greater than the irradiation distance of regulation, and can not reach best radiation response.
Use method of the present invention, only utilize and estimate the irradiation distance whether distance that just can observe easily between light source and the illuminated skin surface reaches regulation, and in adjusting apart from process, Phototherapeutic instrument does not directly contact with damaged skin, thereby has avoided the danger of polluting or infecting.
Again as shown in Figure 2, method of the present invention can be applicable to (not shown main part) in the present flexible light guide Phototherapeutic instrument.Particularly, the light delivery of this flexible light guide Phototherapeutic instrument comprises a housing 3, is provided with a light source 1 that is made of flexible light-transmitting fibre in housing 3.Be respectively equipped with a visible light semiconductor laser 2,2 ' that is made of laser diode in outfan 11 both sides of flexible light guide, this laser instrument 2,2 ' is connected with a set of cells 4, and by the connecting and disconnecting of a switch 5 control power supplys.
In this flexible light guide Phototherapeutic instrument, visible light semiconductor laser 2,2 ' is installed obliquely in the both sides of radiation source outfan 11, according to the distance H between this Phototherapeutic instrument and the illuminated skin surface, and select two angle 2 α between the laser instrument, then, calculate two laser instrument 2,2 ' distance therebetween by tangent trigonometric function relation, and laser instrument is fixed in the Phototherapeutic instrument.
Fig. 3 shows the similar flexible light guide Phototherapeutic instrument with Fig. 2, is with difference embodiment illustrated in fig. 2, also is provided with a support mounting groove 31 at housing 3 in embodiment illustrated in fig. 2, is used for this Phototherapeutic instrument is installed on (not shown) on the support; Phototherapeutic instrument shown in Figure 3 then is not provided with this support mounting groove, and therefore, this Phototherapeutic instrument is suitable for using hand-heldly.
Fig. 4 shows Fig. 2 and user mode embodiment illustrated in fig. 3, this shows, two its luminous point of bundle laser beam C that visible light semiconductor laser sends overlap at illuminated skin place, at this moment, distance between radiation source and the illuminated skin is the regulation irradiation distance, can reach best therapeutic effect, the minimum of side effect simultaneously.
Again as shown in Figure 5, there is shown the situation that method of the present invention is applied to horizontal Phototherapeutic instrument.This Phototherapeutic instrument generally is used for the treatment of large tracts of land, concentrated skin lesion.This horizontal Phototherapeutic instrument comprises the lamp box 3 of a horizontal positioned, in lamp box, be provided with one group of special-purpose fluorescent tube 1 of medical treatment with as radiation source, be respectively equipped with visible light semiconductor laser 2,2 ' in the both sides of fluorescent tube, this laser instrument is connected with a power supply 4 and is controlled by a laser instrument switch 5.
In this Phototherapeutic instrument, visible light semiconductor laser 2,2 ' is installed obliquely in the both sides of fluorescent tube, according to the distance H between this Phototherapeutic instrument and the illuminated skin surface, and select two angle 2 α between the laser instrument, then, calculate two laser instrument 2,2 ' distance therebetween by tangent trigonometric function relation, and laser instrument is fixed in the Phototherapeutic instrument.
During use, the power supply of opening laser instrument makes its A that gives off laser beam, A '.As shown in the figure, the visible luminous point C of laser beam does not at this moment overlap at illuminated skin surface, then shows the against regulation irradiation distance of distance between light source and the illuminated skin, need be moved further the distance between the illuminated relatively skin of Phototherapeutic instrument.
Referring to shown in Figure 6, there is shown the situation that method of the present invention is applied to vertical Phototherapeutic instrument again.This Phototherapeutic instrument generally is used for the treatment of large tracts of land, concentrated skin lesion, and complete machine can move.This vertical Phototherapeutic instrument comprises a movable vertical type phototherapy control device 3, one lamp box 4 is installed on it, both sides corresponding to light source 1 on lamp box are provided with visible light semiconductor laser 2,2 ', and this laser instrument is connected with a power supply (not shown) and is controlled by a laser instrument switch (not shown).
In this Phototherapeutic instrument, visible light semiconductor laser 2,2 ' installs obliquely in the both sides of lamp box, according to the distance H between this Phototherapeutic instrument and the illuminated skin surface, and select two angle 2 α between the laser instrument, then, calculate two laser instrument 2,2 ' distance therebetween, and laser instrument is fixed in the Phototherapeutic instrument by tangent trigonometric function relation.
During use, the power supply of opening laser instrument makes its A that gives off laser beam, A '.As shown in the figure, the luminous point C of visible laser beam at this moment overlaps at illuminated skin surface, then shows the distance irradiation distance up to specification between light source and the illuminated skin.
Below in conjunction with specific embodiments method of the present invention and application thereof are described in detail; but be appreciated that; though only listed three types Phototherapeutic instrument herein; but the skilled person can also be applied to method of the present invention in the Phototherapeutic instrument of other type in connotation scope of the present invention in the art, and these are used and still belong to the present invention's scope required for protection.