CN1058194C - Blue-green laser intravascular radiation therapeutic apparatus - Google Patents

Abstract

The blue-green laser intravascular irradiation therapeutic device of the present invention belongs to a laser medical device, which includes a power control part, a blue-green laser, a light splitting system, a dimming system, a converging system, a light-guiding optical fiber, a treatment head and other parts. Because oxygenated hemoglobin is more sensitive to blue-green light absorption, the blue-green laser intravascular irradiation therapeutic device has better efficacy than the helium-neon laser intravascular irradiation therapeutic device, has a wider application range, a shorter irradiation time, and avoids cross infection that may be caused by external irradiation.

Description

Blue-green laser intravascular irradiation therapy instrument

The invention relates to a blue-green laser intravascular irradiation therapeutic apparatus, which belongs to laser medical equipment.

Known Chinese Invention Patent No. 92100563, named "Optical Quantum Blood Therapy Apparatus", is a medical device that uses the physical phenomenon of ultraviolet radiation to reinfuse the human body's own blood. It is an improvement on the existing technology, adding biomass detection Sensing and microcomputer automatic control system to avoid the influence of external factors.

In addition, the Chinese invention patent No. 92103733 is named "Concentrated High Power He-Ne Laser Therapeutic Apparatus". It is a He-Ne laser tube placed vertically. The end face outputs a laser beam in the shape of a tapered frustum. It can automatically scan laser radiation to treat large areas of lesions in various parts of the human body, or cooperate with medical speculum to enter the body for treatment.

Since the absorption of blood to He-Ne laser (wavelength 632.8nm) is very small, it generally takes tens of minutes to irradiate; and the photoquantum blood therapy instrument is a method of external irradiation. The blood is taken out from the body and irradiated with ultraviolet rays. Then infuse it back into the body. This method is inconvenient to operate, and cross-infection is likely to occur if disposable blood bottles are not used.

The object of the present invention is to overcome the shortcoming of above-mentioned two kinds of apparatuses, take into account the strengths of above-mentioned two kinds of low-light irradiations and design blue-green laser intravascular irradiation therapy instrument.

The blue-green laser intravascular irradiation therapeutic instrument includes 1 power supply and control part, 2 blue-green laser, 3 beam splitting system, 4 light adjusting system, 5 converging system, 6 guiding optical fiber, and 7 treatment head.

Describe in detail below in conjunction with accompanying drawing.

Fig. 1 is a schematic diagram of the principle of the present invention;

Fig. 2 is a structural representation of the present invention;

Fig. 3 is the schematic diagram that adopts prism as spectroscopic system;

4 is a schematic diagram of using a beam splitter as a splitting system;

Fig. 5 is a schematic diagram of using a diffractive optical element as a spectroscopic system.

In Figure 1 a: 1 power supply and control part → 2 blue-green laser → 3 beam splitting system → 4 light adjustment system → 5 converging system → 6 guiding optical fiber → 7 treatment head.

b: 1 power supply and control part → 2 blue-green laser → 5 converging system → 3 beam splitting system → 4 dimming system → 6 guiding optical fiber → 7 treatment head.

c: 1 power supply and control part → 2 blue-green laser → 4 dimming system → 5 converging system → 6 guiding optical fiber → 7 treatment head.

In Fig. 1, a and b two ways use multi-beam laser to treat several patients.

c in Fig. 1 is a schematic block diagram of a patient treated with a single laser beam.

Among them: 1. The function of the power supply and control part is to convert the mains power into the voltage and current that can drive the semiconductor laser, feedback control the blue-green laser, improve the anti-interference ability, make the output power stable, the conversion efficiency is better, and it can generate time To control the signal, in order to determine the illumination time of the treatment head, the blue light pumped by the semiconductor laser has a wavelength of about 410nm, and the green light wavelength can be 532nm. According to different patients and conditions, the output power can vary between 5200mw.

The laser light source can be a blue laser, a green laser emitted by a semiconductor laser, or a blue laser, a green laser or a blue-green laser pumped by a semiconductor laser, with a wavelength of 400-550nm.

The beam splitting system 3 is to divide the blue-green laser emitted by the laser into several beams. If the output power of the laser 2 is greater, the number of beams can be divided into more. The laser output by each laser can generally be divided into 2-10 beams, 2 -5 beams of light work best.

The effect of the dimming system 4 is to adjust the size of each beam of light intensity respectively according to the different light intensity required by the patient's condition, and divide it into strong, medium and weak levels.

The converging system 5 converges each beam of laser light into a point and injects them into the light-guiding fiber 6 respectively. The focus of each beam of light converges on the incident end surface of a single light-guiding fiber 8 to ensure the maximum coupling efficiency.

A in FIG. 2 is a situation where the converging system 5 is in front of the splitting system 3 .

B in FIG. 2 is that the converging system 5 is behind the light splitting system 3 and the light adjusting system 4 .

Among them: 1 power supply and control part, 2 laser device, 8 single bundle light guide fiber, 9 fiber optic needle, 10 sets of needles. Peel off the skin at the end of the optical fiber 8 to expose the core, and insert it into the metal tube to form the fiber optic needle 9, then insert the trocar 10, and insert the trocar 10 into the blood vessel for treatment. The trocar 10 is disposable and can be replaced at any time. The needle 9 and the trocar 10 form the treatment head 7. 11 is a replaceable attenuation sheet, which is used to adjust the intensity of each beam output from the trocar, and 12 is a converging lens, which converges each beam of laser light to the incident end face of the optical fiber 8 respectively. superior.

Fig. 3 is a diagram of an embodiment using a prism to split light. Fig. 3A is an embodiment in which the converging lens 12 is placed before the spectroscopic system 3 and the light adjustment system 4, and Fig. 3B is an embodiment in which the converging lens 12 is placed after the spectroscopic system 3 and the light adjustment system 4 Example. Wherein 13 is beam-splitting prism, and it divides a bunch of laser light into two beams, and the beam-splitting surface reflectivity of prism 13 is selected in this way, makes the light intensity that each beam of light exits from trocar 10 after removing attenuation sheet 11 basically equal, and then use the converging lens 12 to make the light spot smaller to obtain the best coupling efficiency;

Fig. 4 is the embodiment that adopts beam splitter to split light, wherein 14 is a beam splitter, 15 is a reflector, A among Fig. 4 is the embodiment that the converging lens 12 is in front of the beam splitting system 3 and the light adjustment system 4, B among Fig. 4 It is an embodiment in which the condensing lens 12 is behind the beam splitting system 3 and the attenuation sheet 11. The blue-green laser light emitted from the laser 2 is divided into several beams (this figure is divided into 3 beams) through the beam splitter 14 and the reflector 15, and each beam is dimmed with the attenuation plate 11 to control the final output light intensity, and then by The converging lens 12 converges to the incident end surface of the single-bundle optical fiber 8, couples to the optical fiber needle 9, and is transported by the trocar 10 to the patient's blood vessel for irradiation treatment;

Fig. 5 is the embodiment that adopts diffractive optical element 16 to carry out light splitting, and diffractive optical element is to utilize the principle of light wave diffraction to split light from one beam into multiple beams. Grating elements, etc.

A in Fig. 5 is the embodiment of the diffractive optical element 16 before the attenuation sheet 11 after the converging lens 12, and B is the embodiment of the diffractive optical element before the attenuation sheet 11 and the lens 12 in Fig. The laser is divided into multiple laser beams by the diffractive optical element 16. This figure is divided into three laser beams, which pass through the attenuation sheet 11 and are converged to the incident end face of the optical fiber 8 by the converging lens 12, coupled into the optical fiber, guided to the optical fiber needle 9 and finally from the sleeve. The needle 10 is output, and the laser light is guided into the patient's blood vessel by the trocar 10 for irradiation treatment.

The invention has the advantages that because the green light and the oxygenated hemoglobin are complementary colors, the oxygenated hemoglobin is more sensitive to the blue-green laser absorption. Therefore, the blue-green laser intravascular irradiation therapeutic instrument has the following outstanding features compared with the helium-neon laser intravascular irradiation therapeutic instrument:

1. Due to the high output power of the laser and good absorption, the curative effect is high;

2. The blue-green laser emitted by the laser can use one beam or multiple beams of light to treat multiple patients at the same time, thus improving work efficiency;

3. Due to the high output power of the laser, the irradiation time is short, and the irradiation time can be reduced by two-thirds in principle;

4. Wide range of applications: Weak laser has a miraculous effect on the treatment of cardiovascular and cerebrovascular diseases. It can treat medical diseases such as hypertension, angina pectoris, myocardial infarction and cerebral thrombosis, surgical diseases such as thrombosed external hemorrhoids and anal fissure, and treat sciatica and migraine. Neurological diseases have a good therapeutic effect.

Claims (6)

1. A blue-green laser intravascular irradiation therapeutic instrument, which includes power supply, laser, treatment head and other parts, is characterized in that the therapeutic instrument comprises a power supply (1) and a control part, a blue-green laser (2) laser, a spectroscopic system ( 3), light adjustment system (4), convergence system (5), light guide fiber (6), treatment head (7) and other parts, there are three connection methods: a, b two connection methods use multiple laser beams to treat multiple Patient, c is a single-beam laser treatment for a patient; a: Power supply and control part (1) → blue-green laser (2) → beam splitting system (3) → dimming system (4) → converging system (5) → light guide fiber (6) → treatment head (7); b: Power supply and control part (1) → blue-green laser (2) → converging system (5) → beam splitting system (3) → light adjustment system (4) → light guide fiber (6) → treatment head (7); c: Power supply and control part (1) → blue-green laser laser (2) → light adjustment system (4) → convergence system (5) → light guide fiber (6) → treatment head (7); 2. The blue-green laser intravascular irradiation therapeutic apparatus according to claim 1, characterized in that the laser light source can be a blue laser emitted by a semiconductor laser, a green laser, or a blue laser pumped by a semiconductor laser, a green laser or a blue laser. Green laser, wavelength 400-550nm. 3. The blue-green laser intravascular irradiation therapeutic apparatus according to claim 1, characterized in that the light-splitting system (3) adopts a prism (13) for light-splitting, and a block is placed behind each beam of laser light to control the attenuation of the laser light intensity emitted by the treatment head piece(11); 4. The blue-green laser intravascular irradiation therapeutic apparatus according to claim 1, characterized in that the beam splitting system (3) adopts a beam splitter (14) and a mirror (15) to split the light; 5. The blue-green laser intravascular irradiation therapeutic apparatus according to claim 1, characterized in that the light-splitting system (3) adopts a diffractive optical element (16) to carry out light-splitting; 6. The blue-green laser intravascular irradiation treatment device according to claim 1, characterized in that the treatment head (7) is composed of a single bundle of optical fibers (8), an optical fiber needle (9) and a disposable trocar (10).

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