CN118336496B - Optical fiber laser and laser therapeutic instrument - Google Patents
Optical fiber laser and laser therapeutic instrument Download PDFInfo
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- CN118336496B CN118336496B CN202410750794.7A CN202410750794A CN118336496B CN 118336496 B CN118336496 B CN 118336496B CN 202410750794 A CN202410750794 A CN 202410750794A CN 118336496 B CN118336496 B CN 118336496B
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- 230000001225 therapeutic effect Effects 0.000 title claims abstract description 29
- 239000000835 fiber Substances 0.000 claims abstract description 110
- 230000008878 coupling Effects 0.000 claims abstract description 72
- 238000010168 coupling process Methods 0.000 claims abstract description 72
- 238000005859 coupling reaction Methods 0.000 claims abstract description 72
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- 238000005086 pumping Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 12
- 239000002184 metal Substances 0.000 claims description 12
- 229910052775 Thulium Inorganic materials 0.000 claims description 10
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 claims description 10
- 210000004872 soft tissue Anatomy 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 7
- 230000003993 interaction Effects 0.000 claims description 7
- 238000007789 sealing Methods 0.000 claims description 7
- 210000004262 dental pulp cavity Anatomy 0.000 claims description 6
- 230000004913 activation Effects 0.000 claims description 5
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000005516 engineering process Methods 0.000 claims description 5
- 230000002262 irrigation Effects 0.000 claims description 2
- 238000003973 irrigation Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000005253 cladding Methods 0.000 description 3
- 201000010099 disease Diseases 0.000 description 3
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 230000023597 hemostasis Effects 0.000 description 3
- 210000000214 mouth Anatomy 0.000 description 3
- 239000004433 Thermoplastic polyurethane Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
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- 238000002310 reflectometry Methods 0.000 description 2
- 230000001954 sterilising effect Effects 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 229920002803 thermoplastic polyurethane Polymers 0.000 description 2
- 210000001519 tissue Anatomy 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 108010077805 Bacterial Proteins Proteins 0.000 description 1
- 229910052691 Erbium Inorganic materials 0.000 description 1
- 102000001554 Hemoglobins Human genes 0.000 description 1
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- 206010061218 Inflammation Diseases 0.000 description 1
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- 208000004550 Postoperative Pain Diseases 0.000 description 1
- 238000002679 ablation Methods 0.000 description 1
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- UYAHIZSMUZPPFV-UHFFFAOYSA-N erbium Chemical compound [Er] UYAHIZSMUZPPFV-UHFFFAOYSA-N 0.000 description 1
- KWMNWMQPPKKDII-UHFFFAOYSA-N erbium ytterbium Chemical compound [Er].[Yb] KWMNWMQPPKKDII-UHFFFAOYSA-N 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/0675—Resonators including a grating structure, e.g. distributed Bragg reflectors [DBR] or distributed feedback [DFB] fibre lasers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
- A61C1/0046—Dental lasers
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C5/00—Filling or capping teeth
- A61C5/40—Implements for surgical treatment of the roots or nerves of the teeth; Nerve needles; Methods or instruments for medication of the roots
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/042—Arrangements for thermal management for solid state lasers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/09—Processes or apparatus for excitation, e.g. pumping
- H01S3/091—Processes or apparatus for excitation, e.g. pumping using optical pumping
- H01S3/094—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light
- H01S3/0941—Processes or apparatus for excitation, e.g. pumping using optical pumping by coherent light of a laser diode
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- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Veterinary Medicine (AREA)
- Dentistry (AREA)
- Epidemiology (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Neurosurgery (AREA)
- Neurology (AREA)
- Biomedical Technology (AREA)
- Lasers (AREA)
- Laser Surgery Devices (AREA)
Abstract
The invention relates to the technical field of fiber lasers, in particular to a fiber laser and a laser therapeutic instrument. The optical fiber laser comprises a shell, a pumping source, a laser diode and a transmission armor cable; the pump source and the laser diode are integrated in the shell, the first coupling joint is arranged on the shell, and the pump light emitted by the pump source and the aiming light emitted by the laser diode can be coupled to the first coupling joint; the transmission armoured cable is internally integrated with a high-reflection fiber grating, a gain fiber and a low-reflection fiber grating which are sequentially arranged along the laser output direction and are mutually connected, the laser input end of the high-reflection fiber grating is provided with a second coupling joint, and the first coupling joint and the second coupling joint can be in butt coupling. The laser therapeutic instrument comprises the fiber laser. The optical fiber laser and the laser therapeutic instrument provided by the invention not only can ensure the functional completeness of the optical fiber laser, but also reduce the overall cost and greatly compress the volume and the weight of the optical fiber laser.
Description
Technical Field
The invention relates to the technical field of fiber lasers, in particular to a fiber laser and a laser therapeutic instrument.
Background
Since birth, lasers have been widely used in clinical diagnosis and treatment, and are now not only an advanced means of treating diseases, but also an important medical branch. In fact, almost every laser has been developed and found to find its effective application in the medical field. Focusing the laser to micron order, various cutting operations can be performed; the low-temperature thermal effect of the laser can be utilized to perform the functions of diminishing inflammation and relieving pain; the laser can be absorbed by human pigment to generate photochemical reaction, so that the whole cell is destroyed; the oral cavity field can effectively seal capillary vessels of the oral cavity by utilizing laser, and can decompose and denature bacterial proteins, thereby achieving the effects of detumescence, hemostasis and sterilization.
At other wavelength selections beyond the semiconductor laser wavelength range, other wavelengths need to be excited by pumping other working substances, and fiber lasers are currently the most widely used lasers. The conventional fiber laser consists of several major parts: the pump source adopts multimode fiber to output, the conventional fiber types are 105/125um,200/220um and the like, and pump light is laterally coupled into a signal fiber cladding by a pump arm of the fused fiber signal pump beam combiner, and is absorbed, converted and amplified into signal laser by a gain fiber.
Disclosure of Invention
The invention aims to provide a fiber laser and a laser therapeutic instrument, which are used for solving the technical problems of larger volume and heavier weight of the fiber laser in the prior art.
The invention provides an optical fiber laser which comprises a shell, a pumping source, a laser diode and a transmission armor cable.
The pump source and the laser diode are integrated in the shell, the shell is provided with a first coupling joint, and the pump light emitted by the pump source and the aiming light emitted by the laser diode can be coupled to the first coupling joint; the high-reflection fiber grating, the gain fiber and the low-reflection fiber grating which are sequentially arranged along the laser output direction and are connected with each other are integrated in the transmission armor cable, a second coupling joint is arranged at the laser input end of the high-reflection fiber grating, and the first coupling joint and the second coupling joint can be in butt coupling.
Preferably, as an implementation manner, a dichroic mirror is further installed in the housing, and the dichroic mirror can be capable of high transmitting the pumping light and the aiming light, and low transmitting the signal laser reflected by the low reflection fiber grating; the pump light and the aiming light can be input from one side of the dichroic mirror, output from the other side of the dichroic mirror and directed to the first coupling joint.
Preferably, as an implementation manner, a photodiode is further installed in the housing, and the photodiode is used for receiving the signal laser reflected by the low reflection fiber grating.
Preferably, as an implementation manner, the bicolour mirror reflects the signal laser light emitted into the casing through the first coupling joint to the photodiode.
Preferably, as an implementation manner, the transmission armor cable is sequentially provided with an optical fiber, a heat conducting material filling layer, a metal tube and a sealing layer from inside to outside, wherein a water vapor channel for introducing water vapor is formed in the metal tube.
Preferably, as an implementation manner, the optical fiber end surface of the second coupling joint is conical, and the first coupling joint is detachably connected with the second coupling joint.
Preferably, as an implementation manner, the laser output end of the low reflection fiber grating is provided with an output end cap.
Preferably, as an implementation manner, the fiber laser further includes a collimating mirror, and the collimating mirror is disposed opposite to the output end of the transmission armor cable; the lens barrel of the collimating lens is provided with a buckle connection structure or a threaded connection structure and is used for being detachably connected with a user treatment hand tool, a scanning hand tool or a coupling module.
The invention also provides a laser therapeutic apparatus, which comprises a man-machine interaction module, a driving control module and the optical fiber laser, wherein the man-machine interaction module is connected with the optical fiber laser through the driving control module.
Preferably, as an implementation manner, the laser therapeutic apparatus is an oral thulium fiber laser therapeutic apparatus integrating minimally invasive soft tissue cutting and root canal activation flushing by adopting UPTFLA technology and HiFLI technology.
Compared with the prior art, the invention has the beneficial effects that:
When the fiber laser provided by the invention is used, the pump light emitted by the pump source and the aiming light emitted by the laser diode can be directly coupled into the transmission armor cable through the first coupling joint and the second coupling joint, and are transmitted along the high-reflection fiber grating, the gain fiber and the low-reflection fiber grating in the transmission armor cable, so that the coupling of the pump light and the aiming light is realized, the functional completeness of the fiber laser can be ensured, the coupled-out multimode fiber, the pump beam combiner and the welding step can be saved, and the overall cost is reduced; in addition, on the basis of saving multimode optical fibers and a pump beam combiner, optical fiber light paths formed by the high-reflection fiber gratings, the gain optical fibers and the low-reflection fiber gratings are arranged inside the transmission armor cable, and compared with the mode that the gain optical fibers are coiled in the shell, the gain optical fiber heat dissipation device is more beneficial to heat dissipation, and the gain optical fiber heat dissipation module can be reduced or even omitted, so that the volume and the weight of the optical fiber laser can be greatly compressed, and the device is particularly suitable for a laser therapeutic instrument with a miniaturization requirement.
The laser therapeutic instrument provided by the invention has all the advantages of the optical fiber laser because of the optical fiber laser, not only can ensure the functional completeness of the optical fiber laser, but also reduces the overall cost, greatly compresses the volume and the weight of the optical fiber laser, and is especially suitable for the laser therapeutic instrument with the miniaturization requirement.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of a fiber laser according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a transmission armor cable in a fiber laser according to an embodiment of the present invention;
FIG. 3 is a schematic view of light propagation at an end face of an optical fiber of a second coupling joint in an optical fiber laser according to an embodiment of the present invention;
fig. 4 is a schematic view of each layer of a transmission armor cable in a fiber laser according to an embodiment of the present invention;
Fig. 5 is a schematic cross-sectional structural diagram of a transmission armor cable in a fiber laser according to an embodiment of the present invention;
Fig. 6 is a schematic structural diagram of a collimator lens in a fiber laser according to an embodiment of the present invention;
fig. 7 is a schematic diagram of another structure of a collimator lens in a fiber laser according to an embodiment of the present invention;
fig. 8 is a schematic structural diagram of a laser therapeutic apparatus according to an embodiment of the present invention.
Reference numerals illustrate:
100-a housing; 110-a first coupling joint;
200-pumping sources;
300-laser diode;
400-transmitting armor cable;
410-high reflection fiber grating; 411-a second coupling joint;
420-gain fiber;
430-a low reflection fiber grating; 431-output end cap;
440-optical fiber;
450-a filler layer of thermally conductive material;
460-metal tube;
470-sealing layer;
480-a water gas channel;
500-photodiodes;
600-dichroic mirror;
700-collimating mirror; 710-barrel; 711-snap connection; 712-threaded connection;
800-a man-machine interaction module.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention will now be described in further detail by way of specific examples of embodiments in connection with the accompanying drawings.
Referring to fig. 1 and 2, the present embodiment provides a fiber laser including a housing 100, a pump source 200, a laser diode 300, and a transmission armor cable 400; the pump source 200 and the laser diode 300 are integrated in the housing 100, the housing 100 is mounted with a first coupling joint 110, and the pump light emitted by the pump source 200 and the aiming light emitted by the laser diode 300 can be coupled to the first coupling joint 110; the transmission armoured cable 400 is integrated with a high reflection fiber grating 410, a gain fiber 420 and a low reflection fiber grating 430 which are sequentially arranged along the laser output direction and are mutually connected, the laser input end of the high reflection fiber grating 410 is provided with a second coupling joint 411, and the first coupling joint 110 and the second coupling joint 411 can be in butt coupling.
When in use, the pump light emitted by the pump source 200 and the aiming light emitted by the laser diode 300 can be directly coupled into the transmission armor cable 400 through the first coupling joint 110 and the second coupling joint 411 and transmitted along the high reflection fiber grating 410, the gain fiber 420 and the low reflection fiber grating 430 in the transmission armor cable 400, namely, the coupling of the pump light and the aiming light is realized, thereby not only ensuring the functional completeness of the fiber laser, but also saving the coupled multimode fiber, the pump beam combiner and the welding step, and reducing the overall cost; in addition, on the basis of saving multimode fibers and a pump beam combiner, the fiber light paths formed by the high-reflection fiber grating 410, the gain fiber 420 and the low-reflection fiber grating 430 are all arranged inside the transmission armor cable 400, so that compared with coiling the gain fiber 420 in the shell 100, the radiation is more facilitated, and the gain fiber radiation module can be reduced or even omitted, thereby greatly compressing the volume and the weight of the fiber laser, and being particularly suitable for laser therapeutic instruments with miniaturization requirements.
In practice, the first coupling joint 110 and the second coupling joint 411 are coupled in an end-face coupling manner. The high reflection fiber grating 410 can transmit the pump light with high transmittance, almost completely transmit the pump light, reflect the laser light reflected by the low reflection fiber grating 430 with high reflectance, and set the reflectivity of the laser light to be more than 99%; the reflectivity of the low reflection fiber grating 430 to the laser can be set to 5% -20%, most of the light is transmitted and output, the reflected light provides signal laser for the resonant cavity, and oscillation is formed in the resonant cavity, so that the enhancement is achieved.
The high reflection fiber grating 410 may be fused with the gain fiber 420.
Preferably, the first coupling joint 110 and the second coupling joint 411 may be butt-coupled in a detachable manner, so that in a debugging stage, a common optical fiber with the same specification may be installed at the first coupling joint 110 instead of the transmission armored cable 400, in this state, the pump source coupling is adjusted until the pump light emitted by the pump source 200 and the aiming light emitted by the laser diode 300 are coupled to the first coupling joint 110, after the debugging is completed, the common optical fiber with the same specification is detached, and the second coupling joint 411 of the transmission armored cable 400 is butt-coupled with the first coupling joint 110, so that the pump light may be directly coupled into the transmission armored cable 400 to implement pump coupling. Specifically, the first coupling joint 110 and the second coupling joint 411 may be connected in a pluggable manner, which is convenient to operate.
The photodiode 500 may be further installed in the housing 100, and the signal laser reflected by the low reflection fiber grating 430 may enter the housing 100 through the gain fiber 420, the high reflection fiber grating 410, the second coupling joint 411 and the first coupling joint 110 and be received by the photodiode 500 in the housing 100, so that the photodiode 500 may monitor the power of the fiber laser in real time, and further monitor and protect the fiber laser in real time.
Further, a dichroic mirror 600 may be installed in the housing 100, and the position of the dichroic mirror 600 may satisfy the following requirements: the pump light and the aiming light can be input from one side of the dichroic mirror 600, output from the other side and directed to the first coupling joint 110; the dichroic mirror 600 is capable of reflecting the signal laser light injected into the housing 100 through the first coupling tab 110 to the photodiode 500. The dichroic mirror 600 is capable of transmitting the pump light and the aiming light, and the laser light of No. drop a hint, so that most of the light of the pump light and the aiming light can smoothly pass through the dichroic mirror 600 to be coupled to the first coupling joint 110; the signal laser reflected by the low reflection fiber grating 430 can be directed to the dichroic mirror 600 after entering the housing 100 through the first coupling joint 110, and reflected to the photodiode 500 through the dichroic mirror 600, so as to realize the monitoring of the laser power by the photodiode 500, and also can play a role in protecting the chip of the pump source 200.
The dichroic mirrors 600 have at least two, and are disposed corresponding to the pump source 200 and the laser diode 300, respectively, and each dichroic mirror 600 is parallel to each other and forms an angle with the direction in which the optical transmission path is located. In this embodiment, the dichroic mirror 600 has three types, which are disposed corresponding to the pump source 200, the laser diode 300, and the photodiode 500, respectively, and the dichroic mirror 600 forms an angle of 45 degrees with the direction of the optical transmission path.
Specifically, referring to fig. 4 and 5, the transmission armor cable 400 may be provided with the optical fiber 440, the heat conductive material filling layer 450, the metal tube 460 and the sealing layer 470 sequentially from inside to outside, that is, the heat conductive material filling layer 450 is wrapped outside the optical fiber 440, the metal tube 460 is sleeved outside the heat conductive material filling layer 450, and the sealing layer 470 is wrapped outside the metal tube 460. The water-air channel 480 through which water flows can be penetrated in the metal pipe 460, when the device works, water flow in the metal pipe 460 can be atomized under the action of high-speed air flow, atomized water drops can absorb laser energy to burst, energy generated by the burst can impact tissues, and the water flow can take away the flushed lesion tissues, so that the purpose of treatment is achieved. It should be noted that, the water vapor in the water vapor channel 480 can also absorb and take away the heat generated by the optical fiber 440, the metal tube 460 can realize the effect of heat conduction and dispersion, the heat conduction material filling layer 450 can play a role in protecting the optical fiber 440 and conducting heat, the absorption effect of the water vapor in the water vapor channel 480 on the heat generated by the optical fiber 440 can be increased, the heat dissipation effect of the optical fiber 440 is improved, and the gain optical fiber heat dissipation module is omitted; in addition, the sealing layer 470 may function as a seal protection.
Specifically, the material of the sealing layer 470 may be a thermoplastic rubber material, such as TPU (thermoplastic polyurethane rubber); the metal tube 460 may be a stainless steel bellows; the material filled in the thermal conductive material filling layer 450 can be flowing thermal conductive silicone grease or optical fiber thermal conductive potting soft adhesive.
Preferably, referring to fig. 3 (where the right arrow indicates pump light and the left arrow indicates signal laser), the fiber end face of the second coupling joint 411 may be tapered, so that pump light can obtain a larger coupling area, optical density is reduced, and service life may be prolonged. The second coupling joint 411 is made of the high reflection fiber grating 410, and the fiber end face of the second coupling joint is tapered, so that the problem of reflection of the signal light leakage end face of the high reflection fiber grating 410 can be solved, no laser is reflected back to the fiber resonant cavity, and the laser is more stable.
Preferably, an output end cap 431 may be disposed at the laser output end of the low reflection fiber grating 430, so that the optical density of the output end surface may be reduced, the end reflection may be reduced, and the optical cavity may be more stable.
Specifically, the optical fiber connectors (the second coupling connector 411 and the output end cap 431) at two ends of the transmission cable 400 may be SMA905 connectors or various optical fiber connectors such as FC.
In addition, a collimating mirror 700 may be further disposed, the collimating mirror 700 is disposed opposite to the output end of the transmission armoured cable 400, and divergent light output by the output end of the transmission armoured cable 400 may output collimated laser after passing through the collimating mirror 700, so as to be convenient for use.
Further, referring to fig. 6 and 7, the collimator lens 700 may be configured to be detachably connected to a user treatment hand, a scanning hand, or a coupling module, and may be easily detachable for sterilization. Specifically, the lens barrel 710 of the collimating lens 700 may be provided with a snap connection structure 711 or a threaded connection structure 712, so that the collimating lens 700 is in snap connection or threaded connection with a user treatment hand, a scanning hand or a coupling module, thereby realizing the detachable requirement and having higher connection reliability.
By modulating the output of pump source 200, a continuous or quasi-continuous laser output can be obtained; the choice of the fiber size determines the size of the output peak: for the 10/130um optical fiber, the cladding size is 130um, the coupling maximum pumping power is below 150W, and the peak output close to 100W can be obtained through the overshoot of the pumping pulse; higher power can be obtained for 400um fibers with cladding dimensions of 250um or greater. Modulating the frequency and pulse width of the pump source 200 to obtain a target laser frequency and pulse width, pulse width range: 100 us-CW, frequency 1 Hz-5 kHz.
The wavelength of the pump laser diode in the embodiment is according to the target wavelength and gain medium type 793nm,915nm,940nm,976nm and the like are selected; the fiber is suitable for ytterbium-doped fiber, thulium-doped fiber and erbium-ytterbium co-doped equal-gain fiber; can obtain 1064nm,1030nm,1560nm,1900 to 2100nm, etc.
Referring to fig. 8, the present embodiment further provides a laser therapeutic apparatus, which includes a man-machine interaction module 800, a driving control module, and the above-mentioned fiber laser, where the man-machine interaction module 800 is connected with the fiber laser through the driving control module.
The laser therapeutic apparatus provided by the embodiment has all the advantages of the optical fiber laser because of the optical fiber laser, not only can ensure the functional completeness of the optical fiber laser, but also reduces the overall cost, greatly compresses the volume and the weight of the optical fiber laser, and is particularly suitable for the laser therapeutic apparatus with the miniaturization requirement.
The power of the laser therapeutic apparatus provided by the embodiment is medium and low, the average power is below 15W, and the peak power can reach the level of hundred watts.
The laser therapeutic apparatus of this embodiment is oral thulium fiber laser therapeutic apparatus, and this oral thulium fiber laser therapeutic apparatus adopts UPTFLA (Ultra-pulsed Thulium Fiber Laser Ablation, super pulse thulium fiber laser ablation) technique (also called soft tissue ablation technique) and HiFLI (High Frequency Laser Irrigation, high frequency laser oscillation and washing) technique (also called periapical periodontitis treatment technique) simultaneously, and it collects the integration of minimally invasive soft tissue cutting and root canal activation to wash, can better satisfy the clinical common disease of oral cavity, frequently encountered disease demand of diagnosing.
The oral thulium fiber laser therapeutic apparatus utilizes the characteristics that the super-pulse thulium fiber laser water molecules and hemoglobin are high in absorption, soft tissues penetrate shallow and thermal damage is controllable, and the optical fibers are free from being activated to directly and accurately cut the soft tissues, so that the soft tissue surgical treatment of effective hemostasis, anti-infection, postoperative pain alleviation and healing promotion in the operation is realized. The device has obvious soft tissue shrinkage hemostasis function and high-efficiency cutting efficiency, can ensure that a doctor obtains a clear view in an operation, and realizes accurate incision planning.
Meanwhile, a root canal activation flushing technology driven by high-frequency super-pulse thulium fiber laser is utilized to assist in clearing away a contaminated layer of a root canal wall, bacteria, fragments, residual medicines and fillers in the root canal, an air lock in a root tip area is opened, periapical infection is effectively controlled, and meanwhile, less periapical pressure damage and safety range of erbium laser activation flushing are realized through pulse and frequency regulation, so that side effects are reduced.
In general, the oral thulium fiber laser therapeutic apparatus provided by the invention provides brand-new choices for oral clinical treatment, and brings more comfortable, safer and more effective therapeutic experience for patients.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted", "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (7)
1. The fiber laser is characterized by comprising a shell (100), a pump source (200), a laser diode (300) and a transmission armor cable (400);
The pump source (200) and the laser diode (300) are integrated in the housing (100), the housing (100) is provided with a first coupling joint (110), and the pump light emitted by the pump source (200) and the aiming light emitted by the laser diode (300) can be coupled to the first coupling joint (110); the high-reflection fiber grating (410), the gain fiber (420) and the low-reflection fiber grating (430) which are sequentially arranged along the laser output direction and are mutually connected are integrated in the transmission armor cable (400), a second coupling joint (411) is arranged at the laser input end of the high-reflection fiber grating (410), and the first coupling joint (110) and the second coupling joint (411) can be in butt coupling;
A dichroic mirror (600) is further installed in the housing (100), and the dichroic mirror (600) can be used for transmitting the pumping light, the aiming light and the signal laser reflected by the low reflection fiber grating (430) in a high-transmission mode; the pump light and the aiming light can be input from one side of the dichroic mirror (600), output from the other side and emitted to the first coupling joint (110);
A photodiode (500) is further installed in the shell (100), and the photodiode (500) is used for receiving the signal laser reflected by the low reflection fiber grating (430);
The dichroic mirror (600) reflects the signal laser light injected into the housing (100) through the first coupling joint (110) to the photodiode (500).
2. The fiber laser according to claim 1, wherein the transmission armor cable (400) is sequentially provided with an optical fiber (440), a heat conductive material filling layer (450), a metal tube (460) and a sealing layer (470) from inside to outside, and a water vapor channel (480) for introducing water vapor is formed in the metal tube (460).
3. The fiber laser of claim 1, wherein the fiber end of the second coupling tab (411) is tapered, and the first coupling tab (110) is detachably connected to the second coupling tab (411).
4. The fiber laser of claim 1, wherein the laser output end of the low reflection fiber grating (430) is provided with an output end cap (431).
5. The fiber laser according to any of claims 1-4, further comprising a collimator (700), the collimator (700) being arranged opposite the output end of the transmission armour cable (400); the lens barrel (710) of the collimating lens (700) is provided with a buckle connection structure (711) or a threaded connection structure (712) for detachable connection with a user treatment hand, a scanning hand or a coupling module.
6. A laser therapeutic apparatus, comprising a man-machine interaction module (800), a drive control module and the fiber laser of any of claims 1-5, wherein the man-machine interaction module (800) is connected with the fiber laser through the drive control module.
7. The laser therapeutic apparatus according to claim 6, wherein the laser therapeutic apparatus is an oral thulium fiber laser therapeutic apparatus integrating minimally invasive soft tissue cutting and root canal activation irrigation by UPTFLA technology and HiFLI technology.
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| CN113169503A (en) * | 2019-02-27 | 2021-07-23 | 株式会社藤仓 | Laser device |
| CN117618104A (en) * | 2024-01-25 | 2024-03-01 | 广州信筑医疗技术有限公司 | Laser surgery system with intraoperative monitoring function |
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| JP3012034B2 (en) * | 1991-06-27 | 2000-02-21 | 三菱電線工業株式会社 | Optical fiber amplifier |
| JP2007081076A (en) * | 2005-09-14 | 2007-03-29 | Central Glass Co Ltd | Fiber laser equipment having an excitation light source protection unit |
| CN104242024A (en) * | 2014-08-22 | 2014-12-24 | 武汉锐科光纤激光器技术有限责任公司 | Light path system of optical fiber laser device |
| CN110251845A (en) * | 2019-07-04 | 2019-09-20 | 吉林大学第一医院 | Oral therapy instrument |
| WO2022140930A1 (en) * | 2020-12-28 | 2022-07-07 | 北京凯普林光电科技股份有限公司 | Semiconductor fiber laser assembly and fiber laser |
| CN215914883U (en) * | 2021-08-20 | 2022-03-01 | 深圳技术大学 | Thulium-doped optical fiber laser treatment device |
| CN219801480U (en) * | 2023-04-28 | 2023-10-03 | 苏州创鑫激光科技有限公司 | A cable-type pulsed fiber laser amplification system and its equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113169503A (en) * | 2019-02-27 | 2021-07-23 | 株式会社藤仓 | Laser device |
| CN117618104A (en) * | 2024-01-25 | 2024-03-01 | 广州信筑医疗技术有限公司 | Laser surgery system with intraoperative monitoring function |
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