CN217932188U - Universal holmium laser fiber output assembly - Google Patents
Universal holmium laser fiber output assembly Download PDFInfo
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- CN217932188U CN217932188U CN202222173848.7U CN202222173848U CN217932188U CN 217932188 U CN217932188 U CN 217932188U CN 202222173848 U CN202222173848 U CN 202222173848U CN 217932188 U CN217932188 U CN 217932188U
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Abstract
The utility model relates to a general output fiber of holmium laser, concretely relates to general holmium laser fiber output subassembly solves current holmium laser equipment fiber output subassembly and is most disposable consumptive material, and the optical fiber output subassembly commonality and the poor stability of holmium laser equipment matching, the technical problem of inefficiency. The general holmium laser optical fiber output assembly comprises a high-power guide joint, a coupling optical fiber and an output optical fiber; the high-power guide joint comprises a joint shell, and an insert core and a joint inner cavity which are coaxially sleeved on the joint shell and are sequentially connected from front to back; the coupling optical fiber is used for receiving holmium laser; one end of the coupling optical fiber is connected with the sapphire ring, the other end of the coupling optical fiber penetrates through the first through hole, is positioned in the glass guide tube and is connected with one end of the output optical fiber, and the other end of the output optical fiber is connected with an external medical instrument. Can meet the requirements of accepted holmium laser equipment and medical working conditions.
Description
Technical Field
The utility model relates to a general output fiber of holmium laser, concretely relates to general holmium laser fiber output subassembly.
Background
The semiconductor laser has the advantages of simple structure, high electro-optical efficiency, small volume, long service life, easy modulation, low price and the like, and is widely applied to the fields of military affairs, medical treatment, communication, material processing and the like. Particularly, when the laser is applied to lithotripsy treatment, the high-frequency high-energy pulse laser of the semiconductor laser vaporizes water between the tail end of the optical fiber and the calculus to form tiny vacuoles, and transmits energy to the calculus to crush the calculus into powder.
The holmium laser equipment in the medical field has good application effect, but because the current carrier and the resonant cavity of the semiconductor laser are limited, the quality of the output light beam is poorer than that of the output light beam of the solid laser and the gas laser, and the high-power semiconductor laser has larger coupling light spot size and poorer flat top effect. Semiconductor lasers typically use a distal output fiber with a core diameter of 272 microns to achieve high output laser brightness. In order to integrate a high-power holmium laser beam, a holmium laser device generally adopts a fiber output assembly, part of energy of a coupling light spot enters a fiber cladding according to an ideal laser mode (85% of an energy size boundary), and a core insert gluing process cannot bear energy leakage. For example, chinese patent CN 102998752B discloses a "high-power optical fiber transmission jumper and a manufacturing method thereof", which adopts a sapphire tight-fit optical fiber manner, but has high assembly difficulty and high optical fiber cost. Chinese patent CN 106353857A discloses an "improved structure of a high-power optical fiber sapphire coupling connector", which adopts a mode of clamping an optical fiber by a sapphire ring compressed by a bolt, but has low assembly stability and low practicability.
Most of optical fiber output components of holmium laser equipment are disposable consumables, and the consumption is large. Due to the fact that holmium laser equipment manufacturers are various in the market and the quality of the optical fiber output assemblies is different, the precision of the coupling light spots is different, and the optical fiber output assemblies can cause the coupling light spots to generate boundary ring light due to aging. Therefore, most of the optical fiber output components which are universally matched with the holmium laser equipment have low efficiency and poor output stability, and the price of the optical fiber output components is high, so that the application cost of the holmium laser equipment is high.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a general holmium laser fiber output subassembly to current holmium laser equipment fiber output subassembly most be disposable consumptive material, and the optical fiber output subassembly commonality and the poor stability of holmium laser equipment matching, the technical problem of inefficiency, and can satisfy holmium laser equipment and medical working condition demand.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts does:
the general holmium laser fiber output assembly is characterized in that: the high-power optical fiber coupling device comprises a high-power guide joint, a coupling optical fiber and an output optical fiber;
the high-power guide joint comprises a joint shell, and an insert core and a joint inner cavity which are coaxially sleeved on the joint shell and are sequentially connected from front to back; a first through hole communicated with the inner cavity of the joint is axially arranged in the ferrule, and a sapphire ring communicated with the first through hole is nested at the front end part of the ferrule; a glass guide tube communicated with the first through hole is arranged in the joint inner cavity; the sapphire ring and the glass guide tube are coaxially arranged;
the coupling optical fiber is used for receiving holmium laser; one end of the coupling optical fiber is connected with the sapphire ring, the other end of the coupling optical fiber penetrates through the first through hole, is positioned in the glass guide tube and is connected with one end of the output optical fiber, and the other end of the output optical fiber is connected with an external medical instrument.
Furthermore, the other end of the coupling optical fiber is in taper fusion with one end of the output optical fiber, and a fusion taper area, a tail fiber area and a fusion area are formed in the glass guide tube;
the outer diameter of the fused cone region is gradually reduced from a large end close to the coupling optical fiber to a small end close to the output optical fiber, the outer diameter of the large end is 365 micrometers, the outer diameter of the small end is 272 micrometers, the cone angle is smaller than 4 degrees, and the length is larger than 10 millimeters;
the outer diameter of the tail fiber area is 272 micrometers, and the length of the tail fiber area is greater than 5 millimeters.
Further, a first gap is arranged between the outer surface of the coupling optical fiber and the inner surface of the ferrule, and the first gap is larger than 3 microns;
a second gap is arranged between the outer surface of the coupling optical fiber and the inner surface of the sapphire ring, and the second gap is 2-3 microns;
the sapphire ring is tightly matched with the front end part of the ferrule;
the glass guide tube is in clearance fit with the inner cavity of the joint.
Furthermore, the connector also comprises a plastic protection pipe arranged at the rear end of the inner cavity of the connector;
the other end of the output optical fiber passes through the plastic protection tube to be connected with an external medical instrument.
Furthermore, the coupling optical fiber and the glass guide tube, the glass guide tube and the joint inner cavity are fixedly connected through high-folding glue;
the inner diameter of the sapphire ring is 368 micrometers, and the outer diameter is larger than 600 micrometers;
the glass guide tube is made of fused quartz, the inner diameter of the glass guide tube is 368 micrometers, the outer diameter of the glass guide tube is larger than 600 micrometers, and the length of the glass guide tube is 8-10 millimeters.
Meanwhile, the invention also provides another general holmium laser fiber output assembly which is characterized in that: the high-power optical fiber coupling device comprises a high-power guide joint, a coupling optical fiber, an output optical fiber and an adapter;
the high-power guide joint comprises a joint shell, and an insert core and a joint inner cavity which are coaxially sleeved on the joint shell and are sequentially connected from front to back; a first through hole communicated with the inner cavity of the joint is axially arranged in the ferrule, and a sapphire ring communicated with the first through hole is nested at the front end part of the ferrule; a glass guide tube communicated with the first through hole is arranged in the joint inner cavity; the sapphire ring and the glass guide tube are coaxially arranged;
the coupling optical fiber is used for receiving holmium laser; one end of the coupling optical fiber is connected with the sapphire ring, the other end of the coupling optical fiber penetrates through the ferrule and the glass guide tube, is positioned in the adapter and is connected with one end of the output optical fiber, and the other end of the output optical fiber is connected with an external medical instrument;
the adapter is of a hollow structure, and two ends of the adapter are respectively fixedly connected with the coupling optical fiber and the output optical fiber through high-folding glue.
Furthermore, the other end of the coupling optical fiber is in taper welding with one end of the output optical fiber, and a melting cone area, a tail fiber area and a welding area are formed in the adapter;
the outer diameter of the fused cone region is gradually reduced from a large end close to the coupling optical fiber to a small end close to the output optical fiber, the outer diameter of the large end is 365 micrometers, the outer diameter of the small end is 272 micrometers, the cone angle is smaller than 4 degrees, and the length is larger than 10 millimeters;
the outer diameter of the pigtail region is 272 microns and the length is greater than 5 millimeters.
Further, a first gap is arranged between the outer surface of the coupling optical fiber and the inner surface of the ferrule, and the first gap is larger than 3 microns;
a second gap is arranged between the outer surface of the coupling optical fiber and the inner surface of the sapphire ring, and the second gap is 2-3 micrometers;
the sapphire ring is tightly matched with the front end part of the ferrule;
the glass guide tube is in clearance fit with the inner cavity of the joint.
Furthermore, the connector also comprises a plastic protection pipe arranged at the rear end of the inner cavity of the connector;
the other end of the output optical fiber passes through the plastic protection tube to be connected with an external medical instrument.
Furthermore, the coupling optical fiber and the glass guide tube, the glass guide tube and the joint inner cavity are fixedly connected through high-folding glue;
the inner diameter of the sapphire ring is 368 micrometers, and the outer diameter is larger than 600 micrometers;
the glass guide tube is made of fused quartz, the inner diameter of the glass guide tube is 368 micrometers, the outer diameter of the glass guide tube is larger than 600 micrometers, and the length of the glass guide tube is 8-10 millimeters;
the adapter is made of heat-conducting aluminum.
Compared with the prior art, the utility model discloses technical scheme's beneficial effect is:
(1) The utility model relates to a general holmium laser fiber output subassembly is connected coupling optic fibre and output fiber through high-power direction joint, uses the coupling optic fibre in big core footpath to match the facula of the holmium laser equipment on the optical fiber coupling market, uses the output optic fibre in little core footpath to satisfy laser hi-lite operation demand. The laser device has the advantages of simple structure and strong universality, and can safely and stably output light beams coupled by various holmium laser devices in the market to a medical working environment under the conditions of meeting the requirements of high power, high brightness and high efficiency.
(2) The utility model relates to a general holmium laser fiber output subassembly uses high-power direction to connect coupling fiber, output fiber and holmium laser equipment, realizes the accurate direction of holmium laser in outside medical instrument, and its easy operation and stability can also bear high-power stray coupling facula.
(3) The utility model relates to a general holmium laser fiber output subassembly adopts the fused cone butt fusion mode to connect coupling fiber and output fiber in the adapter, has increased output efficiency, has reduced the heat gathering.
Drawings
Fig. 1 is a schematic structural diagram of a first embodiment of a general holmium laser fiber output assembly of the present invention.
Fig. 2 is a schematic structural diagram of a high power guide joint according to the first embodiment.
Fig. 3 is a schematic diagram of energy flow of light energy at the coupling fiber, the sapphire ring and the glass guiding tube when the embodiment of the present invention is applied to an external medical instrument.
Fig. 4 is a schematic structural diagram of a second embodiment of the general holmium laser fiber output assembly of the present invention.
Fig. 5 is a schematic structural diagram of an adapter in the second embodiment.
Fig. 6 is a schematic diagram of the energy flow of the light energy in the adapter when the second embodiment of the present invention is applied to an external medical device.
The reference numbers in the figures are:
1-coupling optical fiber, 2-output optical fiber, 3-high-power guide joint, 31-sapphire ring, 32-glass guide tube, 301-ferrule, 302-joint inner cavity, 303-plastic protection tube, 4-adapter, 41-fused cone region, 42-tail fiber region and 43-fusion region.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the technical scheme of the utility model, all other embodiments that ordinary skilled person in the art obtained under the prerequisite of not making creative work all belong to the scope of the utility model protection.
Example one
As shown in fig. 1, the utility model relates to a general holmium laser fiber output assembly, including coupling fiber 1, output fiber 2 and high-power direction joint 3. The holmium laser refers to semiconductor laser with the wavelength of 2.1 +/-0.1 micron, the universal optical fiber output assembly refers to an optical fiber output assembly which can be matched with most holmium laser equipment in the market, the laser device adopts thick optical fiber coupling laser, thin optical fiber output laser, guide joint clamping and positioning optical fiber, and the adapter 4 converts light beams.
As shown in fig. 2 and 3, the front section of the high power guide joint 3 is a ferrule 301, and the inside of the rear section is a joint inner cavity 302. The high-power guide joint 3 comprises a joint shell, and a ferrule 301 and a joint inner cavity 302 coaxially sleeved on the joint shell and sequentially connected from front to back; a first through hole communicated with the joint inner cavity 302 is axially arranged inside the ferrule 301, and the front end part of the ferrule 301 is nested with a sapphire ring 31 communicated with the first through hole; a glass guide tube 32 communicated with the first through hole is arranged in the joint inner cavity 302; the sapphire ring 31 is coaxially arranged with the glass guide tube 32; since the cladding light leakage of the coupling fiber 1 and the output fiber 2 is harmful, a high-power ferrule 301 is required. The front end of the insertion core 301 is embedded with a sapphire ring 31, and a glass guide tube 32 is arranged in the joint inner cavity 302. The glass guide tube 32 and the joint inner cavity 302 are coaxially in clearance fit, and the size of the clearance between the glass guide tube 32 and the joint inner cavity is smaller than that of the clearance between the coupling optical fiber 1 and the glass guide tube 32; the glass guide tube 32 and the joint lumen 302 are fixed with high-folding glue. The coupling fiber 1 is in clearance fit with the glass guide tube 32, and is suspended in the ferrule 301 to be in clearance fit with the sapphire ring 31. The gap between the coupling fiber 1 and the sapphire ring 31 is suspended without gluing, so that heat accumulation is prevented. The coupling fiber 1 has a large clearance with the ferrule 301, and the energy of the section does not leak in the coupling fiber 1. The gap between the coupling optical fiber 1 and the glass guide tube 32 is preferably 3 microns, and the gap is preferably filled with glass cement (or fixed by glass aerosol). When the holmium laser equipment is low in power, gap glue filling can also select high folding glue. The coupling optical fiber 1 and the output optical fiber 2 are in taper fusion. The coupling optical fiber 1 penetrates from the rear end of the high-power guide joint 3, passes through the glass guide tube 32 and reaches the front end sapphire ring 31, and the proximal end face of the coupling optical fiber 1 is flush with the end face of the sapphire ring 31 for receiving holmium laser beams.
In addition, the outer part of one end of the high-power guide joint 3, which is far away from the sapphire ring 31, is provided with a plastic protection tube 303, and the plastic protection tube 303 can protect the connection between the optical fiber and the joint.
In this embodiment, the coupling fiber 1 is suspended in the ferrule 301 and serves as an access element for matching with the holmium laser device. The high-power guide joint 3 is used as a connecting piece for coupling the optical fiber 1 and the holmium laser equipment. Because the holmium laser equipment on the market has different coupled light spot precision, the optical fiber in the high-power guide joint 3 needs to meet the limit precision of the coupled light spot, and the tolerance ratio is high, the large-size core 365 micron optical fiber is preferably selected as the coupled optical fiber 1. And the glass guide tube 32 is added at the tail end of the glass guide tube, so that the assembly stability is enhanced, and the assembly difficulty is reduced. The output fiber 2 is fused with the coupling fiber 1 as an output element of the holmium laser device. Because the medical holmium laser output needs to meet the high brightness condition and the medical effect, the medical optical fiber with the core diameter of 272 microns is preferably selected as the output optical fiber 2, and the length of the medical optical fiber is more than 1 meter. The front end of the coupling optical fiber 1 passes through the glass guide tube 32 from the tail end of the high-power guide joint 3 and enters the ferrule 301, and the coupling end is flush with the front end of the ferrule 301. The coating layer of the part of the coupling optical fiber 1 in the high-power guide joint 3 is stripped, and the fiber core and the cladding are reserved.
The gap between the coupling fiber 1 and the ferrule 301 is preferably 5 microns. The coupling fiber 1 is suspended in a sapphire ring 31 with a gap of preferably 3 microns. Sapphire ring 31, preferably having an inner diameter of 368 microns, an outer diameter greater than 610 microns, and a length of 2 mm. The sapphire ring 31 is embedded at the front end of the high-power guide joint 3 and is flush with the coupling spot of the holmium laser beam. The glass guide tube 32, preferably of fused silica, has an inner diameter of 368 microns, an outer diameter of 610 microns, and a length of 11 mm. The glass guide tube 32 is installed in the inner cavity of the tail end of the high-power guide joint 3 and is fixed to the inner surface of the joint inner cavity 302 by using high-temperature glue (or fixed to the inner surface of the joint inner cavity 302 by using cement glue).
The gap size between the sapphire ring 31 in the high-power guide joint 3 and the coupling optical fiber 1 is in the holmium laser wavelength magnitude, and according to the total reflection theorem of physical optics, when light waves are totally reflected at the fiber cladding interface, energy can permeate into the wavelength magnitude, so that most of the energy in the cladding of the coupling optical fiber 1 is pumped into the sapphire ring 31 by the sapphire ring 31. The glass guide tube 32 in the high-power guide joint 3 has the functions that on one hand, the clamping length of the glass guide tube 32 can ensure the spatial position of the coupling optical fiber 1, and the coupling optical fiber 1 is prevented from generating larger jumping or inclination relative to the high-power guide joint 3. On the other hand, the thickness of the glass guide tube 32 and the gap between the glass guide tube 32 and the coupling fiber 1 can ensure that the residual energy of the coupling fiber 1 after being pumped by the sapphire ring 31 can be completely pumped out from the glass guide tube 32, and the residual energy of the cladding of the coupling fiber 1 is prevented from being gathered at the joint of the coupling fiber 1 and the high-power guide joint 3.
The utility model discloses when matcing the holmium laser equipment on the market, holmium laser beam focuses on to the near-end terminal surface (the nested one end terminal surface that has sapphire ring 31) of coupling optical fiber 1. Due to the fact that the holmium laser devices of different manufacturers have different precision or the devices are aged, the coupling light spot of holmium laser beams on the proximal end face of the coupling optical fiber 1 is large, and partial energy enters the cladding of the coupling optical fiber 1. Part of the energy entering the cladding of the coupling fiber 1 is pumped out through the sapphire ring 31. The remaining residual energy is pumped out secondarily as it passes through the glass guide tube 32.
Example two
As shown in fig. 4, the difference between the second embodiment and the first embodiment is that the coupling fiber 1 and the output fiber 2 are stripped at the portion where they are butted in the adapter 4, and the cladding and the core are retained. The coupling fiber 1 and the output fiber 2 are connected by using the adapter 4, wherein the holmium laser beam enters the output fiber 2 from the coupling fiber 1, and the core diameter of the coupling fiber 1 is larger than that of the output fiber 2.
As shown in fig. 5 and 6, in order to ensure the butt joint efficiency of the coupling fiber 1 and the output fiber 2, the coupling fiber 1 is tapered into a tapered region 41 by using a taper and fusion splicing method, the core diameter of the tapered region is tapered to be the same as that of the output fiber 2, and a section of the tail fiber (tail fiber region 42) is reserved. The tail fiber is welded with the output fiber 2 in an equal diameter mode. The coupling optical fiber 1 and the output optical fiber 2 are butted in the adapter 4, the two ends of the adapter 4 are fixed by high-folding glue, and the rest space is in a vacuum shape to protect the optical fibers in the cone melting area 41 and the fusion welding area 43. The tail end of the coupling optical fiber 1 is tapered into a small-core optical fiber, and the numerical aperture is unchanged. The holmium laser beam energy is gradually reduced from the large-core-diameter optical fiber to the small-core-diameter optical fiber, the brightness is increased, and the medical working condition is met. The holmium laser beam energy is almost lossless in the whole section of the pigtail region 42 of the coupling fiber 1. The fusion splice region 43 of the adapter 4 is where the pigtail of the coupling fiber 1 is fused to the proximal end of the output fiber 2.
After a holmium laser beam of holmium laser equipment enters the coupling optical fiber 1, the energy of a cladding is pumped out by the high-power guide joint 3, so that the holmium laser beam is all in the fiber core of the coupling optical fiber 1 when entering the adapter 4. Partial light energy does not meet the requirement of total reflection and leaks due to the cone angle in the fused cone area 41 of the adapter 4, partial reflection or scattering light energy is generated in the fusion welding area 43 due to butt joint of fusion-spliced fibers and leaks to a cladding from the fused cone area 41 and the fusion welding area 43, the most leakage of cladding energy is generated at two ends of the cone, the leaked light energy can be changed into heat, and most of the cladding energy is pumped by high-folding glue at two ends of the adapter 4.
In this embodiment, the fused taper region 41 of the adapter 4 is formed by butt-jointing the coupling optical fiber 1 (thick optical fiber) and the output optical fiber 2 (thin optical fiber) through a fused tapering process at the tail end of the coupling optical fiber 1, and has the advantages of simple process, good stability, high efficiency and low heat. The coupling optical fiber 1 is changed from 365 micrometers in outer diameter to 272 micrometers in outer diameter, the taper angle is 3 degrees, the tapering region is 11 millimeters, and the residual tail fiber is 6 millimeters. The fusion splice region 43 of the adapter 4 is a region where the leading end of the output fiber 2 is coaxially butted against the tail fiber of the coupling fiber 1 via a fiber fusion splicer. The coupling fiber 1 is stripped in the fused taper region 41 of the adapter 4, leaving the core and cladding. The fused cone area 41 is uniformly tapered by using a die, and the tail fiber part is drawn in an equal diameter mode. The output fiber 2 is stripped in the fusion-spliced region 43 of the adapter 4, leaving the core and cladding. The material of the adapter 4 is preferably a thermally conductive aluminum material.
The utility model discloses be applied to holmium laser equipment's optical fiber output, can accept holmium laser equipment and medical working condition demand, with the light beam of various holmium laser equipment couplings in the market satisfying under high-power, hi-lite, high efficiency condition, safety and stability's output to the medical operational environment in.
The rest of the structure of the second embodiment is the same as that of the first embodiment.
Claims (10)
1. General holmium laser fiber output subassembly, its characterized in that: comprises a high-power guide joint (3), a coupling optical fiber (1) and an output optical fiber (2);
the high-power guide joint (3) comprises a joint shell, and a ferrule (301) and a joint inner cavity (302) which are coaxially sleeved on the joint shell and sequentially connected from front to back; a first through hole communicated with the joint inner cavity (302) is axially formed in the ferrule (301), and a sapphire ring (31) communicated with the first through hole is nested at the front end of the ferrule (301); a glass guide tube (32) communicated with the first through hole is arranged in the joint inner cavity (302); the sapphire ring (31) and the glass guide tube (32) are coaxially arranged;
the coupling optical fiber (1) is used for receiving holmium laser; one end of the coupling optical fiber (1) is connected with the sapphire ring (31), the other end of the coupling optical fiber passes through the first through hole and then is positioned in the glass guide tube (32) and is connected with one end of the output optical fiber (2), and the other end of the output optical fiber (2) is connected with an external medical instrument.
2. The universal holmium laser fiber output assembly of claim 1, characterized in that: the other end of the coupling optical fiber (1) is in taper welding with one end of the output optical fiber (2), and a melting cone area (41), a tail fiber area (42) and a welding area (43) are formed in the glass guide tube (32);
the outer diameter of the fused taper region (41) is gradually reduced from a large end close to the coupling optical fiber (1) to a small end close to the output optical fiber (2), the outer diameter of the large end is 365 micrometers, the outer diameter of the small end is 272 micrometers, the taper angle is smaller than 4 degrees, and the length is larger than 10 millimeters;
the outer diameter of the tail fiber region (42) is 272 micrometers, and the length is more than 5 millimeters.
3. The general holmium laser fiber output assembly of claim 1 or 2, characterized in that: a first gap is arranged between the outer surface of the coupling optical fiber (1) and the inner surface of the ferrule (301), and the first gap is larger than 3 micrometers;
a second gap is arranged between the outer surface of the coupling optical fiber (1) and the inner surface of the sapphire ring (31), and the second gap is 2-3 micrometers;
the sapphire ring (31) is tightly matched with the front end part of the ferrule (301);
the glass guide tube (32) is in clearance fit with the joint inner cavity (302).
4. The universal holmium laser fiber output assembly of claim 3, wherein: the connector also comprises a plastic protection tube (303) arranged at the rear end of the connector inner cavity (302);
the other end of the output optical fiber (2) penetrates through the plastic protection tube (303) to be connected with an external medical instrument.
5. The universal holmium laser fiber output assembly of claim 4, wherein: the coupling optical fiber (1) is fixedly connected with the glass guide tube (32), and the glass guide tube (32) is fixedly connected with the joint inner cavity (302) through high-folding glue;
the inner diameter of the sapphire ring (31) is 368 micrometers, and the outer diameter is larger than 600 micrometers;
the glass guide tube (32) is made of fused quartz, the inner diameter of the glass guide tube is 368 micrometers, the outer diameter of the glass guide tube is larger than 600 micrometers, and the length of the glass guide tube is 8-10 millimeters.
6. General holmium laser fiber output subassembly, its characterized in that: the high-power optical fiber coupling device comprises a high-power guide joint (3), a coupling optical fiber (1), an output optical fiber (2) and an adapter (4);
the high-power guide joint (3) comprises a joint shell, and a plug core (301) and a joint inner cavity (302) which are coaxially sleeved on the joint shell and are sequentially connected from front to back; a first through hole communicated with the joint inner cavity (302) is formed in the inserting core (301) along the axial direction, and a sapphire ring (31) communicated with the first through hole is nested at the front end part of the inserting core (301); a glass guide tube (32) communicated with the first through hole is arranged in the joint inner cavity (302); the sapphire ring (31) and the glass guide tube (32) are coaxially arranged;
the coupling optical fiber (1) is used for receiving holmium laser; one end of the coupling optical fiber (1) is connected with the sapphire ring (31), the other end of the coupling optical fiber (1) penetrates through the ferrule (301) and the glass guide tube (32) and then is positioned in the adapter (4) and connected with one end of the output optical fiber (2), and the other end of the output optical fiber (2) is connected with an external medical instrument;
the adapter (4) is of a hollow structure, and two ends of the adapter are fixedly connected with the coupling optical fiber (1) and the output optical fiber (2) through high-folding glue respectively.
7. The universal holmium laser fiber output assembly of claim 6, wherein: the other end of the coupling optical fiber (1) is in taper fusion with one end of the output optical fiber (2), and a fused taper area (41), a tail fiber area (42) and a fusion area (43) are formed in the adapter (4);
the outer diameter of the fused cone region (41) is gradually reduced from a large end close to the coupling optical fiber (1) to a small end close to the output optical fiber (2), the outer diameter of the large end is 365 micrometers, the outer diameter of the small end is 272 micrometers, the cone angle is smaller than 4 degrees, and the length is larger than 10 millimeters;
the outer diameter of the tail fiber region (42) is 272 micrometers, and the length is more than 5 millimeters.
8. The universal holmium laser fiber output assembly of claim 7, wherein: a first gap is arranged between the outer surface of the coupling optical fiber (1) and the inner surface of the ferrule (301), and the first gap is larger than 3 micrometers;
a second gap is arranged between the outer surface of the coupling optical fiber (1) and the inner surface of the sapphire ring (31), and the second gap is 2-3 micrometers;
the sapphire ring (31) is tightly matched with the front end part of the ferrule (301);
the glass guide tube (32) is in clearance fit with the joint inner cavity (302).
9. The general holmium laser fiber output assembly of any of claims 6-8, characterized in that: the connector also comprises a plastic protection tube (303) arranged at the rear end of the connector inner cavity (302);
the other end of the output optical fiber (2) penetrates through the plastic protection tube (303) to be connected with an external medical instrument.
10. The universal holmium laser fiber output assembly of claim 9, wherein: the coupling optical fiber (1) is fixedly connected with the glass guide tube (32), and the glass guide tube (32) is fixedly connected with the joint inner cavity (302) through high-folding glue;
the inner diameter of the sapphire ring (31) is 368 micrometers, and the outer diameter is larger than 600 micrometers;
the glass guide tube (32) is made of fused quartz, the inner diameter of the glass guide tube is 368 micrometers, the outer diameter of the glass guide tube is larger than 600 micrometers, and the length of the glass guide tube is 8-10 millimeters;
the adapter (4) is made of heat-conducting aluminum.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222173848.7U CN217932188U (en) | 2022-08-17 | 2022-08-17 | Universal holmium laser fiber output assembly |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222173848.7U CN217932188U (en) | 2022-08-17 | 2022-08-17 | Universal holmium laser fiber output assembly |
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| CN217932188U true CN217932188U (en) | 2022-11-29 |
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| CN202222173848.7U Active CN217932188U (en) | 2022-08-17 | 2022-08-17 | Universal holmium laser fiber output assembly |
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- 2022-08-17 CN CN202222173848.7U patent/CN217932188U/en active Active
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