CN115656188B - Self-calibration laser therapeutic instrument - Google Patents
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- CN115656188B CN115656188B CN202211587904.XA CN202211587904A CN115656188B CN 115656188 B CN115656188 B CN 115656188B CN 202211587904 A CN202211587904 A CN 202211587904A CN 115656188 B CN115656188 B CN 115656188B
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- 238000003384 imaging method Methods 0.000 claims description 14
- 238000013532 laser treatment Methods 0.000 claims description 11
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- 238000002647 laser therapy Methods 0.000 claims description 5
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- 239000000498 cooling water Substances 0.000 description 3
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Abstract
The invention discloses a self-calibration laser therapeutic apparatus, which comprises a laser, a light guide arm, a therapeutic system, a control system and a test system, wherein the light guide arm is arranged on the laser; the laser is connected with the first end of the light guide arm, and the second end of the light guide arm is connected with the treatment system or the test system; the laser therapeutic apparatus is used for switching between a treatment mode and a calibration mode, in the treatment mode, the light guide arm is connected with the treatment system, and treatment laser output by the laser is transmitted to the treatment system along the light guide arm; in the calibration mode, the light guide arm is connected with the test system, and the treatment laser output by the laser is transmitted to the test system along the light guide arm; the test system is used for testing the laser performance parameters transmitted by the light guide arm and feeding back the test result to the control system; and the control system automatically calibrates the laser based on the test result fed back by the test system. And the equipment state of the laser therapeutic apparatus is automatically analyzed, whether the laser therapeutic apparatus needs to be returned to a factory for maintenance or not is judged, or the laser therapeutic apparatus can normally run after self-calibration.
Description
Technical Field
The invention relates to the field of laser equipment, in particular to a self-calibration laser therapeutic apparatus.
Background
Light guide arms are the most commonly used laser delivery devices in laser medical devices. The length of a common medical light guide arm is about 1.2-2 meters, the common medical light guide arm comprises 7 freely movable joints, 360-degree free rotation can be achieved, each joint is provided with a laser reflection lens or a prism, and two adjacent lenses are parallel. Laser is from the entrance along the light guide arm coaxial incidence, and laser and incident angle mirror become 45, and laser is every through a speculum by reflection 90, with laser conduction to the focus position, by the treatment hand utensil with the accurate focus of laser on the focus again. Because the length of the medical light guide arm is long, the requirement on the coaxiality of the laser and the light guide arm is high, the laser medical equipment causes the deviation of the laser under the action of thermal expansion and cold contraction of materials or long-term stress of mechanical parts caused by transportation vibration or temperature change, the laser cannot be completely focused on a patient cover through the light guide arm, and the laser energy or the light path of the equipment is changed to influence the treatment effect.
The existing solution is that the field adjustment is performed by professional equipment maintenance personnel, which wastes time and labor, and has longer maintenance period and higher maintenance cost. The treatment effect is affected by attenuation of laser energy or power due to the life and wear of elements such as a flash lamp and a semiconductor laser in the laser, or contamination of optical elements by dust or moisture. Laser devices are rarely equipped with dedicated energy measuring devices, users need to evaluate the effect by experience, contamination and damage of optical elements cannot be avoided due to long-term use of laser medical devices, and lack of a spot observation tool makes it difficult to judge whether energy attenuation is caused by damage or energy attenuation is caused by life elements.
Disclosure of Invention
An object of this application is to provide a self calibration laser therapeutic instrument, has the self calibration function of self-checking, can analyze laser therapeutic instrument's state, judges whether need return the factory maintenance, perhaps through correcting by oneself back laser therapeutic instrument normal operating. The laser automatic maintenance capability and the service life of the laser therapeutic apparatus are improved, the damage detection is carried out on the optical element in the laser therapeutic apparatus in a non-contact mode, and the service life of the laser is prolonged.
The specific technical scheme is as follows: a self-calibration laser therapeutic apparatus comprises a laser, a light guide arm, a therapeutic system, a control system and a test system; the laser is connected with the first end of the light guide arm, and the second end of the light guide arm is connected with the treatment system or the test system;
the laser therapeutic apparatus is used for switching between two working modes, wherein the two working modes comprise a treatment mode and a calibration mode; wherein,
in the treatment mode, the light guide arm is connected with a treatment system, and treatment laser output by the laser is transmitted to the treatment system along the light guide arm;
in the calibration mode, the light guide arm is connected with a test system, and the treatment laser output by the laser is transmitted to the test system along the light guide arm;
the test system is used for testing the laser performance parameters transmitted by the light guide arm and feeding back the test result to the control system; and the control system automatically calibrates the laser based on the test result fed back by the test system.
Preferably, the test system comprises a calibration plate, an imaging system and a detector, the calibration plate is fixed on one side of the test system close to the light guide arm, and the imaging system is used for imaging the calibration plate onto the detector.
Preferably, the laser performance parameters include one or more of laser spot uniformity characteristic values, laser spot positions and laser power.
Preferably, the control system de-noise the test result fed back by the test system to obtain de-noise bottom data,
integrating the de-noised bottom data to obtain laser power A;
calculating the central position or the gravity center position or the strongest light intensity position of a highlight area on the imaged image to be used as a laser spot position B;
a laser spot uniformity characteristic value U = (C-D)/(C + D);
wherein C is the maximum value of the light intensity data in the de-noising bottom data; d is the minimum value of the light intensity data in the de-noising base data, D > Z x C, Z is the outgoing spot parameter, and Z is more than 0 and less than 0.9.
Preferably, the second end of the light guide arm is connected with the treatment system or the test system through threads or a buckle.
Preferably, after the laser therapeutic apparatus works for a preset time, the calibration mode is switched, the light guide arm is connected with the test system, and a self-calibration process is started.
Preferably, the test system sequentially tests the laser spot uniformity characteristic value, the laser spot position and the laser power in sequence.
Preferably, if the laser spot uniformity characteristic value exceeds a first threshold value, the control system gives an alarm to prompt that manual maintenance is required; if the deviation of the laser spot position exceeds a second threshold value, the control system automatically adjusts the laser to correct the laser spot position; if the laser power parameter is lower than a third threshold value, the control system automatically adjusts the laser to correct the laser power, and if the laser power parameter is higher than a fourth threshold value, an alarm is given to prompt that manual maintenance is needed.
Preferably, the control system is provided with a prompt function, and if the interval exceeds the preset time and the laser therapeutic apparatus is not self-calibrated, the control system prompts self-calibration.
Preferably, the imaging system is a lens or a lens group; the calibration plate is a glass sheet; the detector is a CCD detector.
The invention has the following beneficial effects:
the test system adopted by the invention can be directly connected with the light guide arm, the interface of the test system is the same as the interface of the treatment system, the light guide arm can be conveniently and manually accessed, and the test system tests laser parameters transmitted by the light guide arm, including laser spot uniformity characteristic values, laser spot positions and laser power or energy parameters. And sequentially carrying out self-inspection on the uniformity characteristic value of the laser spot, the position of the laser spot and the laser power sequence according to the sequence, comparing according to a standard value, analyzing the equipment state of the laser therapeutic apparatus, and judging whether the equipment needs to be returned to a factory for maintenance or not, or the laser therapeutic apparatus can normally run after self-correction. The laser therapy instrument has the advantages that the damage detection is carried out on optical elements in the laser therapy instrument in a non-contact mode, the automatic laser maintenance capability is improved, and the service life of the laser therapy instrument is prolonged.
Drawings
FIG. 1 shows a schematic diagram of a self-calibrating laser treatment apparatus according to an embodiment of the present invention;
FIG. 2 is a schematic diagram illustrating the operation of the self-calibrating laser treatment apparatus according to an embodiment of the present invention;
FIG. 3 is a schematic diagram illustrating a calibration status of the self-calibrating laser treatment apparatus according to an embodiment of the present invention;
FIG. 4 is a schematic diagram illustrating a calibration status of the self-calibrating laser treatment apparatus according to an embodiment of the present invention;
wherein, 100, the therapeutic instrument shell; 101. a cooling water system; 102. a control system; 103. a human-computer interaction system; 104. a laser power supply system;
200. a laser; 201. a reflector mounted on the electrically controlled mirror holder;
300. a light guide arm; 301. a 45 ° mirror;
400. a treatment system; 401. a concave lens; 402. a convex lens; 403. a focusing lens;
500. testing the system; 501. calibrating the plate; 502. an imaging system; 503. and a detector.
Detailed Description
The embodiments of the present application are described in further detail below, and it is apparent that the described examples are only a part of the examples of the present application, and are not exhaustive of all the examples. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The terms first, second and the like in the description and in the claims, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It will be appreciated that the data so used may be interchanged under appropriate circumstances such that the embodiments described herein may be practiced otherwise than as specifically illustrated or described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It should be understood that the term "and/or" as used herein is merely one type of association that describes an associated object, meaning that three relationships may exist, e.g., a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
Examples
FIG. 1 shows a schematic diagram of a self-calibrating laser treatment apparatus according to an embodiment of the present invention, comprising: the treatment instrument comprises a treatment instrument shell 100, a cooling water system 101, a control system 102, a human-computer interaction system 103, a laser power supply system 104, a laser 200, a reflector 201, a light guide arm 300, a 45-degree reflector 301, a treatment system 400, a concave lens 401, a convex lens 402, a convex lens 403, a test system 500, a calibration plate 501, an imaging system 502 and a detector 503. In this embodiment, the calibration plate 501 is preferably a glass sheet, the glass sheet is a glass sheet without any mark, and the detector 503 is preferably a CCD detector.
The treatment apparatus housing 100 protects the laser equipment, and a cooling water system 101 for cooling the laser equipment. Therapeutic laser output by the laser 200 is reflected by the reflector 201 arranged on the electric control frame to enter the light guide arm 300, the light guide arm 300 is provided with seven joints, the seven joints can freely rotate in a space of 360 degrees, seven 45-degree reflectors 301 are arranged at the seven joints, and the 45-degree reflectors 301 are parallel in pairs. The angle between the incident laser and the reflector 201 is 45 degrees, the incident laser and the light guide arm 300 are coaxially incident along the first end of the light guide arm 300, and the incident laser is reflected to the next 45-degree reflector by 90 degrees after passing through one 45-degree reflector 301, and finally the treatment laser is transmitted to the treatment system 400 through the light guide arm 300. The second end of the light guide arm 300 is connected to the treatment system 400 by a screw or a snap, and can be manually detached. The treatment system 400 comprises a concave lens 401, a convex lens 402 and a focusing lens 403, and can adjust the spot size at the focus to accurately focus the laser on the treatment area.
Fig. 2 is a schematic diagram illustrating the operation of the self-calibrating laser treatment apparatus according to the present invention, wherein the second end of the light guide arm 300 is connected to the treatment system 400, and the treatment laser is transmitted to the treatment region through the light guide arm 300. Fig. 3 is a schematic diagram illustrating a calibration status of the self-calibration laser therapeutic apparatus according to an embodiment of the present invention, in which the second end of the light guide arm 300 is connected to the test system 500, and the specific calibration process is as follows:
fig. 4 shows a schematic diagram of a calibration state of a self-calibration laser therapeutic apparatus according to an embodiment of the present invention, and the test system 500 is used for testing laser performance parameters after output by the light guide arm 300, and includes: laser spot uniformity characteristic value, laser spot position and laser power. The interface of the testing system 500 and the treatment system 400 have the same interface, are connected with the light guide arm 300 through threads or a snap joint, and can be manually disassembled, and comprise a calibration plate 501, an imaging system 502 and a detector 503. The calibration plate 501 is fixed at the entrance of the test system 500 near the second end of the light guide arm 300. The imaging system 502 may be a lens or a lens group, and the imaging system 502 is used to image the calibration plate 501 onto the detector 503.
In this embodiment, it is preferable that the detector 503 is a CCD detector, the test system 500 transmits the measured laser performance parameters to the control system 102, and the control system 102 analyzes the CCD data, i.e. the laser performance parameters, fed back by the test system 500, and includes: the uniformity characteristic value of the laser spot, the position of the laser spot and the laser power. The control system 102 adjusts the mirror 201 and the laser power supply system 104 according to the CCD data.
The specific method for analyzing the CCD data fed back by the test system 500 by the control system 102 is as follows: after receiving CCD data, i.e. laser performance parameters, fed back by the CCD detector, the control system 102 obtains laser spot uniformity characteristic values, laser spot positions, laser power or energy parameters from the laser performance parameters. Preferably, the control system 102 further performs a bottom denoising processing step, that is, collecting CCD data with no laser output as P 1 Before processing the CCD data, the control system 102 subtracts the CCD data P without laser output from the CCD data 1 And acquiring de-noising bottom CCD data, and then processing the de-noising bottom CCD data to acquire a laser spot uniformity characteristic value, a laser spot position, laser power or energy parameter.
The processing of the de-noised bottom CCD data specifically comprises the following steps:
integrating the de-noised bottom CCD data to obtain laser power which is recorded as data A; calculating the center position or the gravity center position or the position with the strongest light intensity in the highlight area as a laser spot position B, and preferably selecting the position with the strongest light intensity as the position B in the embodiment; the data of the highest intensity of light intensity in the data is C; and selecting data larger than Z x C for analysis, obtaining the lowest intensity data of the data as D, and calculating the value of the laser spot uniformity U = (C-D)/(C + D) as the characteristic value of the laser spot uniformity.
Z is set according to a factory light spot, for a gaussian beam, Z is greater than 0.1 and less than 0.5, for a flat-top beam, Z is greater than 0.5 and less than 0.9, the factory light spot is a gaussian light spot in this embodiment, and preferably Z =0.3.
When the laser device leaves the factory, the laser performance parameter test is performed by using the test system 500: the light guide arm 300 is connected to the test system 500 for testing, and the test data meets factory requirements and is stored as factory data. Control system 102 controls laser 200 output power P 0 The current or voltage parameter for controlling the laser power in the recording laser 200 is I 0 At a power P 0 The test system 500 may operate safely. The highest current Ith or the highest voltage Vth allowing the laser power supply system 104 to operate is recorded, and when the parameter of Ith or Vth is reached, the laser power cannot reach P 0 At power, it is indicative of laser failure or degradation. The light guide arm 300 is connected to the test system 500, the test system 500 transmits the CCD data to the control system 102, and the control system 102 analyzes the data by using the above analysis parameter method, and obtains laser delivery parameters of the laser light guide arm output port, which are: characteristic value U of uniformity of laser spot 0 Laser spot position B 0 Laser power A 0 。
In the using process of the laser device, every period T or when an operator finds that the laser at the outlet of the light guide arm 300 is abnormal, the treatment system 400 at the tail end of the light guide arm 300 needs to be detached first, then the treatment system is manually accessed into the test system 500, the self-calibration function on the man-machine interaction system 103 is clicked, the calibration of the laser light path and the laser energy is carried out, and the laser position and the laser energy at the outlet of the light guide arm 300 are enabled to be restored to the factory-leaving state, and the specific steps are as follows:
the control system 102 records the current or voltage parameter I of the laser factory calibration control laser power as I 0 . The light guide arm 300 is connected into the test system 500, the test system 500 transmits the CCD data to the control system 102, the control system 102 de-noises the CCD data and analyzes the de-noised CCD data, and the parameters of the output port of the laser light guide arm are respectively as follows: characteristic value U of uniformity of laser spot 1 Laser spot position B 1 Laser power A 1 。
In tables 1 and 2, a =0.9,2 < b < 5,0.01 < c < 0.1 is preferable. Preferably, after the interval T is reached, if the light arm is not calibrated for testing, the control system 102 will prompt the user for testing.
The data were compared to output the laser treatment status according to table 1.
TABLE 1
When the system 102 analyzes data to meet the requirements of table 1, the self-checking is completed, the state of the laser therapeutic apparatus is normal, and the light guide arm 300 is connected to the therapeutic system 400 again for continuous use.
If the analysis data do not meet the table 1, the state of the laser therapeutic apparatus is abnormal, and self-checking is carried out according to the following steps: and sequentially carrying out self-checking according to the uniformity characteristic value of the laser spot, the position of the laser spot and the laser power, and comparing whether the data meet the table 2.
Detecting the uniformity characteristic value of the laser spot: when U is turned 1 When the CCD detector is damaged, the detector 503 in the test system 500 is damaged, and the factory is repaired. When U is turned 1 ＜0.8U 0 At this time, the optical elements, i.e., the 45 ° mirror 301, the mirror 201, and the calibration board 501 may be damaged, and the factory is reported;
detecting the laser spot position: when B is present 1 -B 0 If the laser spot is larger than +/-bmm, the control system 102 controls the electric control mirror bracket provided with the reflector 201 to automatically adjust so as to enable the laser spot position B to be positioned 1 = B 0 。
Detecting the laser power:
when the current or voltage parameter I for controlling the laser power in the laser is less than Ith, the control system 102 outputs a signal to change the current or voltage parameter for controlling the laser power in the laser, and the current or voltage parameter is increased by c × I 0 Numerical values. When I is larger than or equal to Ith, stopping correction, and reporting to a factory when the laser therapeutic apparatus is in fault or aging.
Comparison A 1 / A 0 Numerical value when A 1 / A 0 If the correction is more than 0.9, the laser therapeutic apparatus can be normally used. When A is 1 / A 0 Less than 0.9, and then the self-calibration is carried out according to the uniformity characteristic value, the laser spot position and the laser power of the laser spotAnd (6) detecting.
TABLE 2
If the self-checking sequence does not sequentially perform self-checking on the uniformity characteristic value of the laser spot, the position of the laser spot and the laser power sequence according to the sequence, the self-checking is inaccurate, for example, the self-checking is performed preferentially and the power is corrected, however, when the uniformity is checked, the laser has a damaged lens, the corrected power is corrected under the damaged lens, and the damaged lens loses the laser power, so the power correction is inaccurate. If the laser spot position is corrected, when uniformity is checked, the laser lens is damaged, and the laser light path is affected by replacing the lens.
It should be understood that the above-mentioned embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention, and it will be obvious to those skilled in the art that other variations or modifications may be made on the basis of the above description, and all embodiments may not be exhaustive, and all obvious variations or modifications may be included within the scope of the present invention.
Claims (4)
1. A self-calibrating laser treatment instrument is characterized by comprising a laser (200), a light guide arm (300), a treatment system (400), a control system (102) and a test system (500); the laser (200) is connected to a first end of a light guide arm (300), and a second end of the light guide arm (300) is connected to a treatment system (400) or a test system (500);
the laser therapeutic apparatus is used for switching between two working modes, wherein the two working modes comprise a treatment mode and a calibration mode; wherein,
in the treatment mode, the light guide arm (300) is connected with a treatment system (400), and the treatment laser output by the laser (200) is transmitted to the treatment system (400) along the light guide arm (300);
in a calibration mode, the light guide arm (300) is connected with a test system (500), and the therapeutic laser output by the laser (200) is transmitted to the test system (500) along the light guide arm (300);
the test system (500) is used for testing the laser performance parameters transmitted by the light guide arm (300) and feeding back the test result to the control system (102); the control system (102) automatically calibrates the laser (200) based on the test result fed back by the test system (500);
the second end of the light guide arm (300) is connected with the treatment system (400) or the test system (500) through threads or a buckle;
the testing system (500) comprises a calibration plate (501), an imaging system (502) and a detector (503), wherein the calibration plate (501) is fixed on one side, close to the light guide arm (300), of the testing system (500), and the imaging system (502) is used for imaging the calibration plate (501) onto the detector (503);
utilize test system (500) tests and stores the laser parameter of leaving the factory to laser therapeutic instrument, the laser parameter of leaving the factory is control system (102) control laser instrument (200) output power to the record corresponds electric current or voltage parameter in laser instrument (200), recycles test system (500) and obtains laser light guide arm delivery outlet laser parameter of leaving the factory, includes: the system comprises a factory output power, a factory current or voltage parameter, a factory laser spot uniformity characteristic value, a factory laser spot position and a factory laser power;
the laser performance parameters comprise one or more of laser spot uniformity characteristic values, laser spot positions and laser power;
the test system (500) sequentially tests the uniformity characteristic value of the laser spot, the position of the laser spot and the laser power;
the control system (102) de-noise the test result fed back by the test system (500) to obtain de-noise bottom data,
integrating the de-noised bottom data to obtain laser power A;
calculating the central position or the gravity center position or the position with the strongest light intensity in the highlight area on the imaging image to be used as a laser spot position B;
a laser spot uniformity characteristic value U = (C-D)/(C + D);
c is the maximum value of the light intensity data in the de-noising bottom data; d is the minimum value of light intensity data in the de-noising bottom data, D is greater than Z C, Z is a field-out light spot parameter, and Z is greater than 0 and less than 0.9;
if the laser spot uniformity characteristic value exceeds a first threshold value, the control system (102) gives an alarm to prompt that manual maintenance is needed; if the laser spot position deviation exceeds a second threshold, the control system (102) automatically adjusts the laser (200) to correct the laser spot position; if the laser power parameter is lower than a third threshold value, the control system (102) automatically adjusts the laser (200) to correct the laser power, and if the laser power parameter is higher than a fourth threshold value, an alarm is given to prompt that manual maintenance is needed.
2. The self-calibrating laser therapy device according to claim 1, wherein the self-calibrating procedure is initiated by switching to the calibrating mode and connecting the light guide arm (300) to the test system (500) after each predetermined period of operation of the laser therapy device.
3. Self-calibrating laser treatment device according to claim 1, wherein the control system (102) is provided with a prompt facility, and the control system (102) prompts self-calibration if the laser treatment device is not self-calibrated at intervals exceeding a predetermined time.
4. The self-calibrating laser treatment device according to claim 1, wherein the imaging system (502) is a lens or a lens assembly; the calibration plate (501) is a glass sheet; the detector (503) is a CCD detector.
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