CN217506200U - Medical laser optical fiber - Google Patents
Medical laser optical fiber Download PDFInfo
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- CN217506200U CN217506200U CN202221569460.2U CN202221569460U CN217506200U CN 217506200 U CN217506200 U CN 217506200U CN 202221569460 U CN202221569460 U CN 202221569460U CN 217506200 U CN217506200 U CN 217506200U
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Abstract
The utility model discloses a medical laser fiber relates to medical optic fibre technical field. The medical laser fiber comprises an input end and an output end, wherein the input end is connected with a medical laser therapeutic machine. The output end is provided with a protective cap which is hermetically connected with the medical laser optical fiber; the laser emitted by the medical laser therapeutic machine is transmitted to the output end through the input end and then can deflect along the axial direction of the medical laser optical fiber by a preset angle alpha through refraction, and the preset angle alpha is 0-30 degrees. The utility model provides a medical laser optic fibre can satisfy the use scene of less laser emergence angle. Moreover, the deflection of the laser angle is realized in a refraction rather than total reflection mode, so that the tolerance to the end surface flaw and the angle deviation of the output end is greatly improved; on the other hand, compared with a total reflection mode, the refraction mode also improves the optical fiber transmission efficiency, so that the stability of the laser output of the medical laser optical fiber is improved.
Description
Technical Field
The utility model relates to a medical optic fibre technical field especially relates to a medical laser optical fiber.
Background
The medical laser fiber is used for guiding laser energy from equipment to a patient body in an operation, and in the face of more and more medical applications, the conventional medical laser fiber with laser directly output along the fiber cannot meet some use requirements, and special medical laser fibers need to be developed according to different application requirements.
The side-emitting optical fiber is a special medical laser optical fiber which is applied at present, and the principle is that total reflection is formed on the output surface of the optical fiber, so that laser is output from one side of the optical fiber, and the purpose of side emission is achieved. The existing side-emitting scheme realizes the deflection of the direction of laser in a total reflection mode, and in the design, a reasonable grinding angle needs to be calculated by combining optical parameters of an optical fiber so as to realize higher transmission efficiency. The range of the grinding angle and the process tolerance are very small, so that the achievable deflection angle is already fixed, and is generally larger. The general laser emergence angle and the optical fiber direction form 60-90 degrees. In practical applications, smaller laser exit angles are required, which cannot be achieved by means of total reflection.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a medical laser optic fibre can realize the less deflection angle that can't realize through the mode of total reflection to be applied to the use scene that needs less laser emergence angle.
To achieve the purpose, the utility model adopts the following technical proposal:
a medical laser optical fiber comprising:
the input end is connected with the medical laser therapy apparatus;
the output end is provided with a protective cap which is in sealing connection with the medical laser optical fiber; the laser emitted by the medical laser therapeutic machine is transmitted to the output end through the input end and then can deflect at a preset angle alpha along the axial direction of the medical laser optical fiber through refraction, and the preset angle alpha is 0-30 degrees.
As an alternative of the medical laser fiber, the end face of the output end is set to be a first inclined face, and a first preset included angle is formed between the first inclined face and the axis of the medical laser fiber, so that the laser is refracted from the first inclined face.
As an alternative of the medical laser fiber, the first preset included angle is theta 1 And 0 DEG < theta 1 ＜40°。
As an alternative of the medical laser fiber, an inner surface of an end, opposite to the output end, of the protective cap is a second inclined surface, and a second preset included angle is formed between the second inclined surface and an axis of the medical laser fiber, so that the laser is refracted from the second inclined surface.
As an alternative of the medical laser fiber, the second preset included angle is theta 2 And 0 DEG < theta 2 ＜40°。
As an alternative to the medical laser fiber, a predetermined gap is left between the output end and the protective cap.
As an alternative of the medical laser fiber, the preset gap is 0.5 mm-1 mm.
As an alternative of the medical laser fiber, the protective cap is bonded to the medical laser fiber by glue.
As an alternative to medical laser fibres, the protective cap is made of quartz.
As an alternative of the medical laser optical fiber, the outer diameter of the medical laser optical fiber is D, and the inner diameter of the protective cap is D 1 Outer diameter of D 2 Then D is 1 -D＝25um～45um；D 2 ＝1.5mm～1.8mm。
The utility model has the advantages that:
the utility model provides a medical laser optic fibre, this medical laser optic fibre's input and medical laser therapy apparatus are connected, and the refraction takes place after the input is transmitted to the output to the laser that medical laser therapy apparatus launches, and the emergence angle after the laser refraction is 0 ~ 30 with the axis direction of optic fibre, can satisfy the use scene of less laser emergence angle. Moreover, the deflection of the laser angle is realized in a refraction rather than total reflection mode, so that the tolerance of the end surface flaw and the angle deviation of the output end is greatly improved. On the other hand, the refraction mode also improves the optical fiber transmission efficiency compared with the total reflection, thereby improving the stability.
Drawings
Fig. 1 is a schematic structural diagram of a medical laser optical fiber according to an embodiment of the present invention;
fig. 2 is a schematic light path diagram of an output end of a medical laser optical fiber according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a medical laser optical fiber according to a second embodiment of the present invention;
fig. 4 is a schematic optical path diagram of an output end of a medical laser fiber according to an embodiment of the present invention.
In the figure:
1. an output end; 2. a protective cap; 3. glue;
11. a first inclined surface; 21. a second inclined surface.
Detailed Description
In order to make the technical problem solved by the present invention, the technical solution adopted by the present invention and the technical effect achieved by the present invention clearer, the technical solution of the present invention will be further explained by combining the drawings and by means of the specific implementation manner.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present application, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation of the first and second features not being in direct contact, but being in contact with another feature between them. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
Example one
As shown in fig. 1 and fig. 2, the present embodiment provides a medical laser fiber, which includes an input end and an output end 1, wherein the input end is connected with a medical laser therapeutic machine. The output end 1 is provided with a protective cap 2, and the protective cap 2 is hermetically connected with the medical laser optical fiber; the laser emitted by the medical laser therapeutic machine is transmitted to the output end 1 through the input end and then can deflect along the axial direction of the medical laser optical fiber by a preset angle alpha through refraction, and the preset angle alpha is 0-30 degrees.
The medical laser fiber is sequentially provided with a fiber core, a cladding, a coating layer and a protective layer from inside to outside, wherein the fiber core is made of quartz, the cladding is made of fluorine-doped quartz, the coating layer is made of polyimide material, and the protective layer is made of ETFE (Ethylene Tetra Fluoro Ethylene) copolymer.
The input end (not shown in the figure) of the medical laser fiber adopts a standard SMA interface and is adapted to most medical laser therapeutic machines on the market. Laser emitted by the medical laser therapy apparatus is transmitted to the output end 1 through the input end and then refracted, the exit angle of the refracted laser and the direction of the optical fiber form 0-30 degrees, and the use scene of a smaller laser exit angle can be met.
In the prior art, the direction deflection of the laser is realized in a total reflection mode, the total reflection condition is very harsh, and the tolerance on the grinding angle and the end surface flaw of the output end 1 is low. In addition, stray light is usually generated during total reflection, transmission efficiency is low, loss is large, and stability is poor. The medical laser fiber provided by the embodiment realizes the deflection of the laser angle through a refraction rather than total reflection mode, so that the tolerance of the end surface flaw and the angle deviation of the output end 1 is greatly improved. On the other hand, the refraction mode also improves the optical fiber transmission efficiency compared with the total reflection, thereby improving the stability.
As an alternative to medical laser fibres, the protective cap 2 is made of quartz. Because refraction is closely related to the quality and the material of the interface, the stability of light emission in the use process can be ensured by arranging the protective cap 2 made of quartz, and the end face of the output end 1 is prevented from being damaged to influence the output of laser when the laser is output.
As an alternative to the medical laser fiber, the protective cap 2 is bonded to the medical laser fiber by glue 3. The protective cap 2 is bonded with the medical laser optical fiber through glue 3, and the fixing and sealing effects are achieved.
Of course, in other embodiments, the protective cap 2 and the medical laser fiber may also be fusion bonded to the protective cap 2 by laser heating or electrical heating.
As an alternative to the medical laser fiber, a predetermined gap is left between the output end 1 and the protective cap 2. Through setting up the preset clearance, avoid medical laser optical fiber's output 1 and protective cap 2 butt, cause the damage to output 1, influence the output of laser.
Optionally, the preset gap is 0.5mm to 1 mm. In the present embodiment, the predetermined gap is 0.8mm, which can effectively prevent the output terminal 1 from being damaged due to the inner side of the protection cap 2.
As an alternative to the medical laser fiber, the medical laser fiber has an outer diameter D and the protective cap 2 has an inner diameter D 1 Outer diameter of D 2 Then D is 1 -D＝25um～45um；D 2 1.5mm to 1.8 mm. In the present embodiment, the outer diameter D of the medical laser fiber is 605um, and the inner diameter D of the protective cap 2 1 Should be slightly larger than the outer diameter of the medical laser fiber, D 1 630um to 650 um. The protective cap 2 is used to isolate the output end 1 from the human environment (human tissue, tissue fluid or operation circulating water, etc.), so the outer diameter D of the protective cap 2 is set 2 The passing ability of the artificial bone through the human body environment is considered, the artificial bone is as small as possible and is firm, and the artificial bone is prevented from being broken when passing through the human body environment and remaining in human tissues to cause surgical infection.
As an alternative of the medical laser fiber, the end face of the output end 1 is provided with a first inclined face 11, and the first inclined face 11 and the axis of the medical laser fiber form a first preset included angle, so that the laser is refracted from the first inclined face 11 of the output end 1. By grinding the end face of the output end 1 into the first inclined face 11, the laser is refracted on the end face of the output end 1, so that the emergent direction of the laser and the axial direction of the medical laser optical fiber form a preset angle alpha, the preset angle alpha is 0-30 degrees, and the laser deflection angle can be applied to a use scene needing a smaller emergent angle of the laser.
Optionally, the first preset included angle is θ 1 And 0 DEG < theta 1 < 40 deg. The first inclined plane 11 is arranged to form a first preset included angle theta with the axis of the medical laser fiber 1 When 0 DEG < theta 1 When the angle is less than 40 degrees, the emitting direction of the laser and the axial direction of the medical laser fiber are between 0 and 30 degrees.
Example two
As shown in fig. 3 and 4, the present embodiment provides another medical laser fiber, which has a structure substantially the same as that of the medical laser fiber provided in the first embodiment, except that:
the inner surface of the end, opposite to the output end 1, of the protective cap 2 is set to be a second inclined surface 21, and the second inclined surface 21 and the axis of the medical laser fiber form a second preset included angle, so that the laser is refracted from the second inclined surface 21 of the output end 1. In this embodiment, the end surface of the output end 1 is a plane, and the exit direction of the laser light and the axial direction of the medical laser fiber can be made 0 ° to 30 ° even when the laser light emitted from the output end 1 is refracted at the second inclined surface 21 of the protective cap 2.
The second inclined surface 21 is also formed by grinding.
Optionally, the second preset included angle is θ 2 And 0 DEG < theta 2 < 40 deg. When 0 DEG < theta 2 When the angle is less than 40 degrees, the emitting direction of the laser and the axial direction of the medical laser fiber form 0 to 30 degrees.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and it is to be understood that the present invention is not limited to the above embodiments, but may be modified within the scope of the present invention.
Claims (10)
1. A medical laser fiber, comprising:
the input end is connected with the laser therapy apparatus;
the output end (1) is provided with a protective cap (2), and the protective cap (2) is connected with the medical laser optical fiber in a sealing manner; the laser emitted by the medical laser therapeutic machine is transmitted to the output end (1) through the input end and then can deflect at a preset angle alpha along the axial direction of the medical laser optical fiber through refraction, and the preset angle alpha is 0-30 degrees.
2. The medical laser fiber according to claim 1, wherein the end face of the output end (1) is configured as a first inclined face (11), and a first preset included angle is formed between the first inclined face (11) and the axis of the medical laser fiber, so that the laser is refracted from the first inclined face (11).
3. The medical laser fiber according to claim 2, wherein the first predetermined included angle is θ 1 And 0 DEG < theta 1 ＜40°。
4. The medical laser fiber according to claim 1, wherein an inner surface of an end of the protective cap (2) opposite to the output end (1) is a second inclined surface (21), and a second predetermined included angle is formed between the second inclined surface (21) and an axis of the medical laser fiber, so that the laser is refracted from the second inclined surface (21).
5. The medical laser fiber according to claim 4, wherein the second predetermined included angle is θ 2 And 0 DEG < theta 2 ＜40°。
6. The medical laser fiber according to any of claims 1 to 5, wherein a predetermined gap is left between the output end (1) and the protective cap (2).
7. The medical laser fiber according to claim 6, wherein the predetermined gap is 0.5mm to 1 mm.
8. The medical laser fiber according to any of claims 1 to 5, wherein the protective cap (2) is bonded to the medical laser fiber by means of glue (3).
9. Medical laser fiber according to any of claims 1 to 5, wherein the protective cap (2) is made of quartz.
10. The medical laser fiber according to any of claims 1 to 5, wherein the outer diameter of the medical laser fiber is D and the inner diameter of the protective cap (2) is D 1 Outer diameter of D 2 Then D is 1 -D＝25um～45um；D 2 ＝1.5mm～1.8mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221569460.2U CN217506200U (en) | 2022-06-22 | 2022-06-22 | Medical laser optical fiber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221569460.2U CN217506200U (en) | 2022-06-22 | 2022-06-22 | Medical laser optical fiber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217506200U true CN217506200U (en) | 2022-09-27 |
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ID=83338589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221569460.2U Active CN217506200U (en) | 2022-06-22 | 2022-06-22 | Medical laser optical fiber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217506200U (en) |
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2022
- 2022-06-22 CN CN202221569460.2U patent/CN217506200U/en active Active
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