Optical coupler and laser therapeutic instrument

Abstract

The utility model provides an optical coupler and a laser therapeutic instrument, relates to the technical field of laser coupling, and aims to solve the problem of inaccurate focusing positioning of the existing optical coupler. The optical coupler comprises an adjusting cylinder, an adjusting nut, a focusing lens group, an axial limiting structure, a circumferential limiting structure, an adjusting ring, a light emitting connector and a radial adjusting structure, the adjusting nut is rotationally arranged in the adjusting cylinder, and an operation opening opposite to the adjusting nut is formed in the side wall of the adjusting cylinder; the focusing lens group comprises a focusing lens barrel; the focusing lens barrel is in threaded connection with the adjusting nut; the axial limiting structure is arranged between the adjusting nut and the adjusting cylinder; the circumferential limiting structure is arranged between the focusing lens barrel and the adjusting barrel; the adjusting ring is located at the downstream of the focusing lens group along the light beam direction and is fixedly connected with the adjusting cylinder; the light emitting connector penetrates through the adjusting ring; the radial adjusting structure is installed on the adjusting ring and used for adjusting the radial position of the light emitting connector. The focusing positioning device is accurate in focusing positioning.

Description

Technical Field

[0001] The utility model relates to the technical field of laser coupling, in particular to an optical coupler and a laser therapeutic apparatus. Background Art

[0002] Laser technology is increasingly used in medical equipment, among which optical couplers are essential components for connecting equipment lasers with external handpieces, treatment heads, etc. However, in existing optical couplers, when the laser beam exits the focusing lens and enters the optical fiber receiving head, the laser beam deviates from the center of the optical fiber receiving head, i.e., there is a problem of inaccurate focusing positioning, which can cause damage or even burn of the optical fiber receiving head, and also reduce coupling efficiency. Utility Model Content

[0003] The first object of the utility model is to provide an optical coupler to solve the technical problem of inaccurate focusing positioning of the existing optical coupler.

[0004] The optical coupler provided by the utility model comprises an adjusting barrel, an adjusting nut, a focusing lens group, an axial limiting structure and a circumferential limiting structure, wherein the adjusting barrel has openings at both ends; the adjusting nut is rotatably arranged inside the adjusting barrel, and an operating opening opposite to the adjusting nut is arranged on the side wall of the adjusting barrel; the focusing lens group comprises a focusing lens barrel, and the focusing lens barrel is threadedly connected with the adjusting nut; the axial limiting structure is arranged between the adjusting nut and the adjusting barrel, and is used to limit the axial relative displacement of the adjusting nut and the adjusting barrel; the circumferential limiting structure is arranged between the focusing lens barrel and the adjusting barrel, and is used to limit the relative rotation of the focusing lens barrel and the adjusting barrel;

[0005] The optical coupler also includes an adjustment ring, a light output connector and a radial adjustment structure. The adjustment ring is located downstream of the focusing lens group along the light beam direction and is fixedly connected to the adjustment tube; the light output connector is passed through the adjustment ring and is used to fix the optical fiber receiving head; the radial adjustment structure is installed on the adjustment ring and is used to adjust the radial position of the light output connector.

[0006] Furthermore, a plurality of first adjustment holes are formed on an outer wall of the adjustment nut, and the plurality of first adjustment holes are arranged at intervals along the circumference of the adjustment nut, and along the radial direction of the adjustment cylinder, the operation port is opposite to at least one of the first adjustment holes.

[0007] Further, the axial limiting structure includes an annular groove, a first limiting hole and a first limiting pin, wherein the annular groove is opened on the outer wall of the adjusting nut; the first limiting hole is opened on the cylinder wall of the adjusting cylinder, and along the radial direction of the adjusting cylinder, the first limiting hole is connected to and opposite to the annular groove; the first limiting pin is passed through the first limiting hole and inserted into the annular groove.

[0008] Further, the circumferential limiting structure includes a slide groove and a protrusion slidably matched with the slide groove, wherein the slide groove extends along the axial direction of the adjustment cylinder, one of the slide groove and the protrusion is arranged on the outer wall of the focusing lens barrel, and the other of the slide groove and the protrusion is arranged on the inner wall of the adjustment cylinder.

[0009] Furthermore, the slide groove is arranged on the outer wall of the focusing lens barrel, and the barrel wall of the adjusting barrel is provided with a second limiting hole, and along the radial direction of the adjusting barrel, the second limiting hole is connected with and opposite to the slide groove; the circumferential limiting structure also includes a second limiting pin, the second limiting pin is passed through the second limiting hole, and is inserted into the slide groove, wherein the second limiting pin protrudes from the inner wall of the adjusting barrel to form the protrusion.

[0010] Furthermore, the adjustment ring is provided with at least three second adjustment holes along the circumferential direction, and the radial adjustment structure includes at least three radial adjustment columns, and the plurality of radial adjustment columns are respectively inserted into the plurality of second adjustment holes in a one-to-one correspondence and abut against the outer wall of the light output connector; along the radial direction of the adjustment tube, the position of each radial adjustment column is adjustable.

[0011] Furthermore, the at least three radial adjustment columns include at least one elastic column pin and at least two ball head screws.

[0012] Furthermore, the light output connector includes a positioning section and an installation section arranged along the axial direction, the installation section is used to fix the optical fiber receiving head, and the positioning section is used to abut and cooperate with the plurality of radial adjustment columns; the outer wall of the positioning section includes a conical positioning surface, and the center line of the conical positioning surface is along the axial direction of the adjustment cylinder.

[0013] Furthermore, the large diameter end of the conical positioning surface faces the focusing lens group, and the small diameter end of the conical positioning surface faces the mounting section.

[0014] The beneficial effects brought by the optical coupler of the utility model are:

[0015] When it is necessary to adjust the light beam along the axial direction, that is, when it is necessary to adjust the displacement of the light beam along the Z axis, the adjusting nut can be rotated through the operating port. Since an axial limiting structure is provided between the adjusting nut and the adjusting barrel, the axial position of the adjusting nut is fixed at this time, and the adjusting nut only has the rotational freedom. By setting the focusing barrel of the focusing lens group to be spirally connected with the adjusting nut, and providing a circumferential limiting structure between the focusing barrel and the adjusting barrel, the rotational freedom of the focusing barrel is limited, and the focusing barrel only has the axial freedom. Therefore, under the rotation of the adjusting nut, the spiral transmission between the adjusting nut and the focusing barrel will be converted into the axial movement of the focusing barrel, so as to achieve the position adjustment of the focusing lens group along the axial direction, that is, to achieve the purpose of adjusting the displacement of the light beam in the Z axis. When it is necessary to adjust the light beam along the radial direction, that is, when it is necessary to adjust the displacement of the light beam in the XY plane, the radial adjustment structure installed on the adjusting ring can be used to adjust the radial position of the light output connector, so as to achieve the purpose of adjusting the displacement of the light beam in the XY plane.

[0016] Through the above-mentioned setting, the optical coupler realizes the displacement adjustment of the light beam in the Z-axis direction and the XY plane, that is, the purpose of axial and radial position adjustment of the light beam is achieved, which not only makes the focusing more precise, but also effectively solves the problem of damage or even burning of the optical fiber receiving head caused by inaccurate positioning, and also improves the coupling efficiency.

[0017] The second purpose of the utility model is to provide a laser therapeutic apparatus to solve the technical problem of inaccurate focusing and positioning of the existing optical coupler.

[0018] The laser therapy device provided by the utility model adopts the above-mentioned optical coupler, and the optical coupler also includes an inductive sensor, which is installed on the light output connector, and the inductive sensor is used to send an inductive signal to the controller of the laser therapy device after the optical fiber receiving head is inserted into the light output connector; and / or, the optical coupler also includes a collimating lens group, which is located upstream of the adjusting nut along the direction of the light beam, and the collimating lens group is installed on the adjusting cylinder.

[0019] The beneficial effects of the laser therapeutic device of the utility model are:

[0020] The laser therapy device adopts the above optical coupler, and accordingly, the laser therapy device has all the advantages of the above optical coupler.

[0021] In addition, the setting of the above-mentioned induction sensor can not only identify the insertion action of the optical fiber receiving head, but also realize the linkage of the equipment after the optical fiber receiving head is inserted into place, and the degree of automation is relatively high. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings in the following description are only embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0023] Figure 1 An exploded view of the structure of the optical coupler provided in the embodiment of the utility model;

[0024] Figure 2 An axial cross-sectional view of an optical coupler provided by an embodiment of the utility model;

[0025] Figure 3 A schematic diagram of the installation of a radial adjustment structure of an optical coupler provided in an embodiment of the utility model on an adjustment ring.

[0026] Description of reference numerals:

[0027] 100-adjustment tube; 200-collimation lens group; 300-adjustment nut; 400-focusing lens group; 510-axial limit structure; 520-circumferential limit structure; 600-adjustment ring; 700-light output connector; 800-radial adjustment structure; 900-induction sensor;

[0028] 110-operating port; 210-collimating lens barrel; 220-collimating gasket; 230-collimating pressure ring; 240-collimating lens; 310-first adjustment hole; 410-focusing lens barrel; 420-focusing gasket; 430-focusing pressure ring; 440-focusing lens; 511-annular groove; 512-first limiting hole; 513-first limiting pin; 521-slide groove; 522-second limiting hole; 523-second limiting pin; 610-second adjustment hole; 710-positioning section; 711-conical positioning surface; 720-installing section; 810-elastic pin; 820-ball head screw. DETAILED DESCRIPTION

[0029] In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific embodiments of the utility model are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0030] The optical coupler provided by the utility model can be applied to laser therapeutic apparatuses for soft tissue cutting, hemostasis, hard tissue removal, lithotripsy and the like in areas with developed nerves. Figure 1 An exploded view of the structure of the optical coupler provided in this embodiment; Figure 2 This is an axial cross-sectional view of the optical coupler provided in this embodiment. Figure 1 and Figure 2 As shown, the optical coupler of this embodiment is applied to an oral thulium fiber laser therapy device. The oral thulium fiber laser therapy device adopts UPTFLA (Ultra-pulsed Thulium Fiber Laser Ablation) technology and HiFLI (High Frequency Laser Irrigation) technology, integrating minimally invasive soft tissue cutting and root canal activation irrigation, improving coupling efficiency, and is beneficial to the accuracy, minimal invasiveness, comfort and other aspects of the surgery.

[0031] like Figure 1 and Figure 2 As shown, this embodiment provides an optical coupler, including an adjusting barrel 100, an adjusting nut 300, a focusing lens group 400, an axial limiting structure 510 and a circumferential limiting structure 520, wherein the adjusting barrel 100 has openings at both ends; the adjusting nut 300 is rotatably arranged inside the adjusting barrel 100, and the side wall of the adjusting barrel 100 is provided with an operating port 110 opposite to the adjusting nut 300; the focusing lens group 400 includes a focusing lens barrel 410, which is threadedly connected to the adjusting nut 300; the axial limiting structure 510 is arranged between the adjusting nut 300 and the adjusting barrel 100, and is used to limit the axial relative displacement of the adjusting nut 300 and the adjusting barrel 100; the circumferential limiting structure 520 is arranged between the focusing lens barrel 410 and the adjusting barrel 100, and is used to limit the relative rotation of the focusing lens barrel 410 and the adjusting barrel 100.

[0032] Please continue to refer to Figure 1 and Figure 2 The optical coupler also includes an adjustment ring 600, a light output connector 700 and a radial adjustment structure 800, wherein the adjustment ring 600 is located downstream of the focusing lens group 400 along the light beam direction and is fixedly connected to the adjustment tube 100; the light output connector 700 is passed through the adjustment ring 600 and is used to fix the optical fiber receiving head of the mounting seat; the radial adjustment structure 800 is installed on the adjustment ring 600 and is used to adjust the radial position of the light output connector 700.

[0033] When it is necessary to adjust the light beam along the axial direction, that is, when it is necessary to adjust the displacement of the light beam along the Z-axis, the adjusting nut 300 can be rotated through the operating port 110. Since an axial limiting structure 510 is provided between the adjusting nut 300 and the adjusting tube 100, the axial position of the adjusting nut 300 is fixed at this time, and the adjusting nut 300 only has a rotational degree of freedom; by setting the focusing lens barrel of the focusing lens group 400 to be spirally connected with the adjusting nut 300, and providing a circumferential limiting structure 520 between the focusing lens barrel 410 and the adjusting tube 100, the rotational degree of freedom of the focusing lens barrel 410 is restricted, and the focusing lens barrel 410 only has an axial degree of freedom. Therefore, under the rotation action of the adjusting nut 300, the spiral transmission between the adjusting nut 300 and the focusing lens barrel 410 will be converted into an axial movement of the focusing lens barrel 410, so as to realize the axial position adjustment of the focusing lens group 400, that is, to achieve the purpose of adjusting the displacement of the light beam in the Z-axis. When the light beam needs to be adjusted radially, that is, when the displacement of the light beam in the XY plane needs to be adjusted, the radial adjustment structure 800 installed on the adjustment ring 600 can be used to adjust the radial position of the light output connector 700, thereby achieving the purpose of adjusting the displacement of the light beam in the XY plane.

[0034] Through the above-mentioned setting, the optical coupler realizes the displacement adjustment of the light beam in the Z-axis direction and the XY plane, that is, the purpose of axial and radial position adjustment of the light beam is achieved, which not only makes the focusing more precise, but also effectively solves the problem of damage or even burning of the optical fiber receiving head caused by inaccurate positioning, and also improves the coupling efficiency.

[0035] It should be noted that the coordinate axes involved in this embodiment are all based on the coordinate system in the figure.

[0036] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the focusing lens group 400 further includes a focusing washer 420, a focusing pressure ring 430 and a focusing lens 440. Specifically, a first flange is formed on the inner wall of the focusing lens barrel 410, and one side of the focusing lens 440 abuts against the first flange; the focusing pressure ring 430 is pressed on the focusing lens 440 through the focusing washer 420 to fix the focusing lens 440 relative to the focusing lens barrel 410. The focusing lens group 400 is used to focus the light beam.

[0037] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the optical coupler further includes a collimating lens group 200. Specifically, the collimating lens group 200 is located upstream of the adjusting nut 300 along the direction of the light beam, and the collimating lens group 200 is installed on the adjusting cylinder 100. The collimating lens group 200 is used for collimating the light beam.

[0038] Please continue to refer to Figure 1 and Figure 2 The collimating lens group 200 includes a collimating lens barrel 210, a collimating gasket 220, a collimating pressure ring 230 and a collimating lens 240. Specifically, a second flange is formed on the inner wall of the collimating lens barrel 210, and one side of the collimating lens 240 abuts against the second flange; the collimating pressure ring 230 is pressed on the collimating lens 240 through the collimating gasket 220 to fix the collimating lens 240 relative to the collimating lens barrel 210.

[0039] When the optical coupler is working, the light beam emitted by the laser beam will first be collimated by the collimating lens group 200, then focused by the focusing lens group 400, and finally enter the optical fiber receiving head inserted in the light output connector 700 to achieve light beam coupling to external hand tools, treatment heads, etc.

[0040] Please continue to refer to Figure 1 and Figure 2 The axial limiting structure 510 may include an annular groove 511, a first limiting hole 512 and a first limiting pin 513, wherein the annular groove 511 is opened on the outer wall of the adjusting nut 300; the first limiting hole 512 is opened on the wall of the adjusting cylinder 100, and along the radial direction of the adjusting cylinder 100, the first limiting hole 512 is connected to and opposite to the annular groove 511, that is, the first limiting hole 512 and the annular groove 511 are at the same position of the adjusting cylinder 100 along the axial direction; the first limiting pin 513 is passed through the first limiting hole 512 and inserted into the annular groove 511.

[0041] When the adjusting nut 300 is rotated through the operating port 110, the first limiting pin 513 will slide in the annular groove 511 without generating relative movement with the adjusting nut 300 along the axial direction of the adjusting cylinder 100, thereby achieving axial limiting of the adjusting nut 300, so that the adjusting nut 300 only has the rotational freedom around the axial direction of the adjusting cylinder 100.

[0042] This arrangement of the axial limiting structure 510 not only ensures reliable axial limiting, but also facilitates the operation by only moving the adjusting nut 300 axially until the annular groove 511 is opposite to the first limiting hole 512, and then inserting the first limiting pin 513 into the first limiting hole 512 and extending it to the annular groove 511 when assembling the adjusting nut 300. In addition, after removing the first limiting pin 513, the axial fixing effect on the adjusting nut 300 can be released, and the adjusting nut 300 can be removed from the adjusting cylinder 100.

[0043] In this embodiment, three first limiting holes 512 are opened on the wall of the adjusting cylinder 100 at equal intervals along the circumferential direction. Correspondingly, the first limiting pins 513 also have three first limiting holes 512 respectively corresponding to each other and are clamped in the annular groove 511. From a geometric point of view, the three-point limiting is more reliable.

[0044] In this embodiment, the first limiting pin 513 may be connected to the adjusting cylinder 100 by means of threads.

[0045] In other embodiments, the axial limiting structure 510 can also be configured to include an annular groove 511 and a ball head elastic pin, wherein the annular groove 511 is provided on one of the adjusting nut 300 and the adjusting cylinder 100, and the ball head elastic pin is provided on the other of the adjusting nut 300 and the adjusting cylinder 100, and the axial limiting of the adjusting nut 300 is achieved by retracting the ball head elastic pin during the assembly of the adjusting nut 300 and extending the ball head elastic pin to be stuck in the annular groove 511 after the adjusting nut 300 is assembled into place.

[0046] Please continue to refer to Figure 2 In this embodiment, the circumferential limiting structure 520 may include a slide groove 521 and a protrusion slidably matched with the slide groove 521, wherein the slide groove 521 extends along the axial direction of the adjustment tube 100, the slide groove 521 is arranged on the outer wall of the focusing lens barrel 410, and the protrusion is arranged on the inner wall of the adjustment tube 100.

[0047] When the adjusting nut 300 is rotated through the operating port 110, the focusing lens barrel 410 will move along the axial direction of the adjusting barrel 100 due to the threaded connection between the adjusting nut 300 and the focusing lens barrel 410 and the sliding cooperation between the slide groove 521 and the protrusion. At this time, the protrusion arranged on the inner wall of the adjusting barrel 100 will move in the slide groove 521 opened in the focusing lens barrel 410, thereby achieving the purpose of limiting the rotation of the focusing lens barrel 410.

[0048] This arrangement of the circumferential limiting structure 520 not only ensures reliable circumferential limiting, but also releases the circumferential fixing effect on the focusing lens barrel 410 after the second limiting pin 523 is removed, so that the focusing lens group 400 can be removed from the adjustment barrel 100.

[0049] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the circumferential limiting structure 520 further includes a second limiting hole 522 and a second limiting pin 523. The second limiting hole 522 is formed in the wall of the adjusting cylinder 100. Along the radial direction of the adjusting cylinder 100, the second limiting hole 522 is connected to and opposite to the slide groove 521; the second limiting pin 523 is passed through the second limiting hole 522 and inserted into the slide groove 521, wherein the second limiting pin 523 protrudes from the inner wall of the adjusting cylinder 100 to form the above-mentioned protruding portion.

[0050] This form of using the second limit pin 523 to form a protrusion is not only simple in structure, but also, when assembling the focusing lens group 400, it is only necessary to align the slide groove 521 of the focusing lens barrel 410 with the second limit hole 522 in the circumferential direction, and then insert the second limit pin 523 into the second adjustment hole 610 and extend it to the slide groove 521, which is convenient for operation.

[0051] In this embodiment, the second limiting pin 523 may also be connected to the adjusting cylinder 100 via threads.

[0052] In other embodiments, a protrusion may be provided on the inner wall of the adjusting tube 100, and the cooperation between the protrusion and the slide groove 521 may be utilized to realize the circumferential rotation limit of the focusing lens barrel 410; of course, the protrusion may be provided on the outer wall of the focusing lens barrel 410 and the slide groove 521 may be provided on the inner wall of the adjusting tube 100, and this arrangement may also achieve the purpose of circumferential rotation limit of the focusing lens barrel 410.

[0053] Please continue to refer to 2. In this embodiment, the slide groove 521 is a blind groove that does not penetrate the inner wall of the focusing lens barrel 410 in the radial direction. This setting can use the bottom wall of the slide groove 521 to limit the screwing depth of the second limit pin 523, thereby preventing the second limit pin 523 from being over-screwed and falling into the interior of the focusing lens barrel 410.

[0054] Please continue to refer to Figure 1 In this embodiment, a plurality of first adjustment holes 310 are formed on the outer wall of the adjusting nut 300 , and the plurality of first adjustment holes 310 are arranged at intervals along the circumference of the adjusting nut 300 , and along the radial direction of the adjusting cylinder 100 , the operating port 110 is opposite to at least one first adjustment hole 310 .

[0055] When it is necessary to rotate the adjusting nut 300 to adjust the position of the focusing lens group 400 along the Z axis, the adjusting tool can be inserted into the first adjusting hole 310 through the operating port 110 to apply a torque to the adjusting nut 300, thereby achieving the purpose of rotating the adjusting nut 300.

[0056] In this embodiment, the adjustment tool may be a tool such as a screwdriver that can be inserted into the first adjustment hole 310 .

[0057] Figure 3 This is a schematic diagram of the installation of the radial adjustment structure 800 of the optical coupler provided in this embodiment on the adjustment ring 600. Please continue to refer to Figure 1 , and combined with Figure 3In this embodiment, the adjustment ring 600 is provided with three second adjustment holes 610 along the circumferential direction, and the radial adjustment structure 800 may include three radial adjustment columns, which are respectively inserted into the three second adjustment holes 610 in a one-to-one correspondence and abut against the outer wall of the light output connector 700; along the radial direction of the adjustment tube 100, the position of each radial adjustment column is adjustable.

[0058] When it is necessary to adjust the displacement of the light beam in the XY plane, that is, when it is necessary to offset the light beam in the radial direction of the adjustment tube 100, the extension amount of each radial adjustment column along the radial direction of the adjustment tube 100 can be adjusted so that the accommodating space enclosed by the ends of each radial adjustment column is radially offset, thereby making the light output connector 700 in the above-mentioned accommodating space move synchronously to achieve the purpose of adjusting the displacement of the light beam in the XY plane.

[0059] After completing the radial position adjustment of the light output connector 700, since each radial adjustment column is abutted against the outer wall of the light output connector 700, and by setting the number of radial adjustment columns to three and making the central angle corresponding to the distribution area greater than 180°, the light output connector 700 can maintain a stable state, thereby ensuring the stability of the optical coupler during operation.

[0060] In addition, the number of radial adjustment columns is three, which can reduce the processing and manufacturing costs while ensuring the reliability of the adjustment of the light beam displacement along the XY plane.

[0061] Please continue to refer to Figure 3 In this embodiment, the central angle corresponding to the circumferential distribution area of ​​the three second adjustment holes 610 in the adjustment ring 600 is α, where α is greater than 180°. That is to say, after the three radial adjustment columns are assembled to the adjustment ring 600, the central angle corresponding to the distribution area of ​​the three radial adjustment columns is greater than 180°.

[0062] Of course, in other embodiments, the number of radial adjustment columns may also be four.

[0063] Please continue to refer to Figure 1 and Figure 3 In this embodiment, the three radial adjustment columns include an elastic column pin 810 and two ball head screws 820.

[0064] When the displacement of the light beam in the XY plane needs to be adjusted, the two ball head screws 820 can be screwed with a tool to extend or retract the parts of the two ball head screws 820 protruding from the inner wall of the adjustment ring 600, so as to cause radial displacement of the output optical connector 700. In the above process, the elastic pin 810 always has a tendency to abut the output optical connector 700 against each ball head screw 820, so that the output optical connector 700 can remain stable in the adjustment ring 600.

[0065] Please continue to refer to Figure 3 In this embodiment, the two ball head top screws 820 are distributed at an angle of approximately 90°, and the elastic pin 810 is approximately located on the extension line of the angular bisector of the two ball head top screws 820. At this time, the central angle α corresponding to the distribution area of ​​the two ball head top screws 820 and one elastic pin 810 is approximately 225°.

[0066] Please continue to refer to Figure 1 and Figure 2 In this embodiment, the light output connector 700 may include a positioning section 710 and an installation section 720 arranged along the axial direction, wherein the installation section 720 is used to fix the optical fiber receiving head, and the positioning section 710 is used to abut and cooperate with the ball head top screw 820 and the elastic pin 810; the outer wall of the positioning section 710 includes a conical positioning surface 711, and the center line of the conical positioning surface 711 is along the axial direction of the adjusting cylinder 100.

[0067] By providing a positioning section 710 with an outer wall as a conical positioning surface 711 on the light output connector 700, and utilizing the conical positioning surface 711 to abut and cooperate with the ball head top screw 820 and the elastic pin 810, the positioning of the light output connector 700 can be achieved, so that after the light output connector 700 is assembled to the adjustment ring 600, its center line remains parallel to the axis of the adjustment tube 100.

[0068] Please continue to refer to Figure 2 In this embodiment, the large diameter end of the conical positioning surface 711 faces the focusing lens group 400, and the small diameter end of the conical positioning surface 711 faces the mounting section 720. Figure 2 From the perspective of FIG. 7 , that is, the large diameter end of the tapered positioning surface 711 faces left, and the small diameter end faces right.

[0069] The above arrangement can not only realize the positioning of the light output connector 700 by utilizing the abutment cooperation between the conical positioning surface 711 and the ball head top screw 820 and the elastic pin 810, but also can realize the limiting of the light output connector 700 when the elastic pin 810 is in the pop-up state, thereby preventing the light output connector 700 from separating from the adjustment ring 600.

[0070] In addition, this embodiment also provides a laser therapy device, which uses an optical coupler as described above. The optical coupler can also include a sensing sensor 900. Specifically, the sensing sensor 900 is installed on the light output connector 700. The sensing sensor 900 is used to send a sensing signal to the controller of the laser therapy device after the optical fiber receiving head is inserted into the light output connector 700.

[0071] When the optical fiber receiving head is inserted into the optical connector 700, the induction sensor 900 can recognize the insertion of the optical fiber receiving head, thereby sending an induction signal to the device controller. At this time, the device controller can control the device to start, thereby achieving the purpose of linkage of the device after the optical fiber receiving head is inserted into place.

[0072] The configuration of the above-mentioned induction sensor 900 can not only identify the insertion action of the optical fiber receiving head, but also realize the linkage of the equipment after the optical fiber receiving head is inserted into place, and the degree of automation is relatively high.

[0073] Specifically, a pair of through holes can be provided in the light outlet connector 700, wherein the pair of through holes is connected with the channel in the light outlet connector 700 for inserting the optical fiber receiving head; the inductive sensor 900 is a photoelectric sensor, and the sensing end of the inductive sensor 900 faces the above-mentioned through holes. After the optical fiber receiving head is inserted into the light outlet connector 700, the light emitted by the inductive sensor 900 is blocked, thereby realizing the recognition of the optical fiber receiving head.

[0074] It should be noted that how the sensing sensor 900 outputs the sensing signal to the device controller after identifying the optical fiber receiving head, and how the controller controls the device linkage according to the above sensing signal, can be obtained by technical personnel in this field based on the existing technology. This embodiment does not make any improvements on this, so it will not be repeated.

[0075] Although the utility model is disclosed as above, the utility model is not limited thereto. Any person skilled in the art can make various changes and modifications without departing from the spirit and scope of the utility model. Therefore, the protection scope of the utility model shall be subject to the scope defined by the claims.

[0076] Finally, it should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0077] In the above embodiments, the descriptions of directions such as “upper”, “lower”, “left”, “right”, and “side” are all based on the drawings.

[0078] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An optical coupler, characterized in that: The invention comprises an adjusting cylinder (100), an adjusting nut (300), a focusing lens group (400), an axial limiting structure (510) and a circumferential limiting structure (520), wherein the adjusting cylinder (100) has openings at both ends; the adjusting nut (300) is rotatably arranged inside the adjusting cylinder (100); a side wall of the adjusting cylinder (100) is provided with an operating opening (110) opposite to the adjusting nut (300); the focusing lens group (400) comprises a focusing lens barrel (410); the focusing The lens barrel (410) is threadedly connected to the adjusting nut (300); the axial limiting structure (510) is arranged between the adjusting nut (300) and the adjusting barrel (100) and is used to limit the axial relative displacement of the adjusting nut (300) and the adjusting barrel (100); the circumferential limiting structure (520) is arranged between the focusing lens barrel (410) and the adjusting barrel (100) and is used to limit the relative rotation of the focusing lens barrel (410) and the adjusting barrel (100); The optical coupler further comprises an adjustment ring (600), a light output connector (700) and a radial adjustment structure (800); the adjustment ring (600) is located downstream of the focusing lens group (400) along the light beam direction and is fixedly connected to the adjustment cylinder (100); the light output connector (700) is passed through the adjustment ring (600) and is used for fixedly installing the optical fiber receiving head; the radial adjustment structure (800) is installed on the adjustment ring (600) and is used for adjusting the radial position of the light output connector (700).

2. The optical coupler according to claim 1, characterized in that The outer wall of the adjusting nut (300) is provided with a plurality of first adjusting holes (310), the plurality of first adjusting holes (310) are arranged at intervals along the circumference of the adjusting nut (300), and along the radial direction of the adjusting cylinder (100), the operating port (110) is opposite to at least one of the first adjusting holes (310).

3. The optical coupler according to claim 1, characterized in that The axial limiting structure (510) comprises an annular groove (511), a first limiting hole (512) and a first limiting pin (513), wherein the annular groove (511) is formed on the outer wall of the adjusting nut (300); the first limiting hole (512) is formed on the wall of the adjusting cylinder (100), and along the radial direction of the adjusting cylinder (100), the first limiting hole (512) is connected to and opposite to the annular groove (511); the first limiting pin (513) is passed through the first limiting hole (512) and inserted into the annular groove (511).

4. The optical coupler according to claim 1, characterized in that The circumferential limiting structure (520) comprises a slide groove (521) and a protrusion slidably matched with the slide groove (521), wherein the slide groove (521) extends along the axial direction of the adjustment tube (100), one of the slide groove (521) and the protrusion is arranged on the outer wall of the focusing lens tube (410), and the other of the slide groove (521) and the protrusion is arranged on the inner wall of the adjustment tube (100).

5. The optical coupler according to claim 4, characterized in that: The slide groove (521) is arranged on the outer wall of the focusing lens barrel (410), and the barrel wall of the adjusting barrel (100) is provided with a second limiting hole (522). Along the radial direction of the adjusting barrel (100), the second limiting hole (522) is connected with and opposite to the slide groove (521); the circumferential limiting structure (520) also includes a second limiting pin (523), the second limiting pin (523) is passed through the second limiting hole (522) and inserted into the slide groove (521), wherein the second limiting pin (523) protrudes from the inner wall of the adjusting barrel (100) to form the protruding portion.

6. The optical coupler according to claim 1, characterized in that: The adjustment ring (600) is provided with at least three second adjustment holes (610) along the circumferential direction, and the radial adjustment structure (800) comprises at least three radial adjustment columns, wherein the plurality of radial adjustment columns are respectively inserted into the plurality of second adjustment holes (610) in a one-to-one correspondence and abut against the outer wall of the light output connector (700); Along the radial direction of the adjustment cylinder (100), the position of each radial adjustment column is adjustable.

7. The optical coupler according to claim 6, characterized in that The at least three radial adjustment columns include at least one elastic column pin (810) and at least two ball head screws (820).

8. The optical coupler according to claim 6, characterized in that The light output connector (700) comprises a positioning section (710) and a mounting section (720) arranged along the axial direction, wherein the mounting section (720) is used for fixedly mounting the optical fiber receiving head, and the positioning section (710) is used for abutting and cooperating with a plurality of radial adjustment columns; the outer wall of the positioning section (710) comprises a conical positioning surface (711), and the center line of the conical positioning surface (711) is along the axial direction of the adjustment cylinder (100).

9. The optical coupler according to claim 8, characterized in that The large-diameter end of the conical positioning surface (711) faces the focusing lens group (400), and the small-diameter end of the conical positioning surface (711) faces the mounting section (720).

10. A laser therapeutic apparatus using the optical coupler according to any one of claims 1 to 9, characterized in that: The optical coupler further comprises a sensing sensor (900), wherein the sensing sensor (900) is mounted on the light output connector (700), and the sensing sensor (900) is used to send a sensing signal to a controller of the laser therapy device after the optical fiber receiving head is inserted into the light output connector (700); and / or, the optical coupler further comprises a collimating lens group (200), wherein the collimating lens group (200) is located upstream of the adjusting nut (300) along the direction of the light beam, and the collimating lens group (200) is mounted on the adjusting tube (100).

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