A rotatable secondary coupling device and its laser optical fiber catheter

Abstract

The present invention discloses a rotatable and retractable secondary coupling device and its laser fiber conduit, comprising a mounting seat, a first mounting tube and a second mounting tube fixedly connected to both sides of the mounting seat, wherein a rotary sleeve assembly is rotatably mounted inside the first mounting tube to clamp a large-core-diameter optical fiber group. A sliding sleeve assembly is slidably sleeved inside the second mounting tube to clamp a small-core-diameter optical fiber group. The laser overlap area between the laser fiber conduit inside the rotary sleeve assembly and the laser fiber conduit inside the sliding sleeve assembly is controlled by rotating the rotary sleeve assembly, and the spacing between the laser fiber conduit inside the rotary sleeve assembly and the laser fiber conduit inside the sliding sleeve assembly is controlled and adjusted by a telescopic spacing adjustment assembly, thereby achieving controllable coupling of large- and small-core-diameter optical fiber groups and facilitating quick adaptation to the coupling of various models of small-core-diameter optical fiber groups. Furthermore, while ensuring the catheter's passability and therapeutic effect, the present invention only requires discarding the small-core-diameter optical fiber group portion and reusing the large-core-diameter optical fiber group, significantly saving the cost of UV-resistant optical fiber materials.

Description

Technical Field

[0001] The present invention belongs to the technical field of laser ablation, and in particular relates to a rotatable secondary coupling device and a laser optical fiber catheter thereof. Background Art

[0002] Excimer laser treatment equipment in the existing technology needs to use laser fiber optic catheters of different models and specifications to adapt to different blood vessel diameters for intravascular lesion ablation treatment. For certain special models and specifications of small-core laser fiber optic catheters, an optical path coupling device is usually used for coupling. However, its coupling adaptation requirements are relatively high, and the optical path coupling distance in the excimer laser treatment equipment needs to be finely adjusted so that the coupling light spot meets the preset requirements before it can complete the coupling adaptation with the special model and specification of small-core laser fiber optic catheter. The optical path coupling distance adjustment of the currently available excimer laser treatment equipment is cumbersome. When the above-mentioned special model and specification of laser fiber optic catheter needs to be replaced during surgery, it may be necessary to readjust the coupling distance during use. The operation is time-consuming and troublesome, which greatly increases the operation time and surgical risks.

[0003] Furthermore, the fiber optic catheters used to transmit excimer lasers must be made of UV-resistant optical fibers. Their special materials and complex manufacturing processes result in extremely high costs, ranging from tens to hundreds of yuan per meter, dozens of times the price of ordinary optical fibers, and they are completely imported. As disposable medical consumables, one end of the catheter is equipped with a coupling plug to connect with the excimer laser treatment device, while the other end of the catheter is inserted into the lesion within the human blood vessels for laser ablation treatment. After use, the entire laser fiber optic catheter must be discarded. Multiple laser fiber optic catheters of different models and specifications may be used during a single surgery. The cost of laser fiber optic catheters consumed in a single surgery is relatively high, resulting in a certain amount of resource waste for both patients and the medical system. Summary of the Invention

[0004] The object of the present invention is to provide a rotatable secondary coupling device and a laser fiber conduit thereof to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solutions: a rotatable secondary coupling device and a laser fiber conduit thereof, comprising a mounting seat, a No. 1 mounting tube and a No. 2 mounting tube fixedly connected to both sides of the mounting seat, a rotary sleeve assembly being rotatably mounted inside the No. 1 mounting tube, a clamping portion 1 being provided at equal intervals on the inner wall of the rotary sleeve assembly, a rotating driving member and a hydraulic control member being provided on the outer side surface of the No. 1 mounting tube, the rotating driving member controlling the rotation of the rotary sleeve assembly, the hydraulic control member being fixedly sleeved on the laser fiber conduit in the rotary sleeve assembly through the clamping portion 1, the inner sleeve of the No. 2 mounting tube being slidably sleeved on the inner side of the No. 2 mounting tube, the outer side surface of the sliding sleeve assembly being provided with clamping portions 2 being provided at equal intervals, a telescopic distance-adjusting assembly being provided on the top of the No. 2 mounting tube, the telescopic distance-adjusting assembly controlling the sliding sleeve assembly to reciprocate laterally, the telescopic distance-adjusting assembly controlling the clamping portion 2 to automatically clamp the laser fiber conduit in the sliding sleeve assembly, a positioning ring being fixedly provided on the interior of both the rotary sleeve assembly and the sliding sleeve assembly,

[0006] The laser overlapping area of ​​the laser fiber optic conduit inside the rotary sleeve assembly and the laser fiber optic conduit inside the sliding sleeve assembly is controlled by rotating the rotary sleeve assembly, and the distance between the laser fiber optic conduit inside the rotary sleeve assembly and the laser fiber optic conduit inside the sliding sleeve assembly is controlled and adjusted by the telescopic distance adjustment assembly.

[0007] Preferably, the rotary sleeve assembly includes a rotary sleeve body, an internal reserved cavity and an adapter port, a retaining ring is fixedly sleeved on the outer side surface of the rotary sleeve body, and an annular cavity is provided on the inner wall of the No. 1 mounting cylinder, the retaining ring is rotatably sleeved in the arc cavity, the internal reserved cavity is opened inside the rotary sleeve body, the adapter port is opened on the inner wall of the rotary sleeve body, and the adapter port is communicated with the internal reserved cavity, the outer side surface of the rotary sleeve body is provided with a side port, and the internal reserved cavity is communicated with the annular cavity through the side port.

[0008] Preferably, the clamping part includes an arc-shaped splint, a fixed sleeve and a movable block, the arc-shaped splint is adapted in the adapting port, the fixed sleeve is fixed in the internal reserved cavity, one end of the movable block is fixedly connected to the arc-shaped splint, and the movable block is elastically connected to the fixed sleeve through a spring, and the fixed sleeve is connected to the annular cavity.

[0009] Preferably, the rotating drive component includes motor 1, gear 1 and gear 2, the gear 1 is fixedly sleeved on the output shaft of motor 1, the gear 2 is fixedly sleeved on the outer surface of the rotary sleeve body, and the gear 2 is meshed with the gear 1.

[0010] Preferably, the hydraulic control unit includes a fixed cylinder, an adjusting rod and a piston plate. The fixed cylinder is fixed to the outside of the No. 1 mounting cylinder, and the fixed cylinder is communicated with the annular cavity. The piston plate is movably sleeved in the fixed cylinder. One end of the adjusting rod movably passes through the fixed cylinder and extends into the fixed cylinder. The inner end of the die-cut adjusting rod is fixedly connected to the piston plate. The piston plate is elastically connected to the fixed cylinder by spring 2. The fixed cylinder is filled with lubricating oil.

[0011] Preferably, the sleeve assembly includes a sleeve body, an outer groove, an adapter cavity and a slider, the slider is fixedly connected to the sleeve body, a slide groove is provided on the outer side surface of the No. 2 mounting cylinder, the slider is slidably sleeved in the slide groove, the adapter cavity is provided on the inner wall of the sleeve body, the outer groove is provided on the outer side surface of the sleeve body, the outer groove and the adapter cavity correspond one-to-one, and the outer groove and the slide groove correspond one-to-one.

[0012] Preferably, the clamping part two includes a movable frame, an arc-shaped splint two, a connecting rod and a sloped surface. The movable frame is elastically connected in the outer groove by a spring three. The arc-shaped splint two is adapted to be fitted in the adaptation cavity. The connecting rod is fixedly connected between the arc-shaped splint two and the movable frame. The sloped surface is opened on the movable frame and close to the left end of the slide groove.

[0013] Preferably, the telescopic distance adjustment assembly includes a bracket, a screw rod, a second motor and a movable connecting block. The screw rod is rotatably arranged in the bracket, the second motor controls the forward and reverse rotation of the screw rod, the movable connecting block is threadedly sleeved on the outer surface of the screw rod, and the movable connecting block is fixed on the slider of the sliding sleeve assembly.

[0014] A laser fiber conduit for use in a rotatable secondary coupling device, comprising a large-core fiber group and a small-core fiber group, and the aforementioned rotatable secondary coupling device. The large-core fiber group is sheathed within a rotating sleeve assembly, while the small-core fiber group is sheathed within a sliding sleeve assembly. The large-core fiber group comprises a first conduit sleeve and a large-core fiber disposed within the first conduit sleeve. The small-core fiber group comprises a second conduit sleeve and a small-core fiber bundle disposed within the second conduit sleeve. The number of large-core fibers is at least 100, distributed circumferentially around the axis of the large-core fiber group. The number of small-core fiber bundles is at least 100, distributed circumferentially around the axis of the small-core fiber group. Each large-core fiber is coaxial with each small-core fiber bundle.

[0015] Preferably, the positioning ring of the rotary sleeve assembly is provided with at least one positioning groove or positioning protrusion on its circumference, and the same number of matching positioning protrusions or positioning grooves are correspondingly provided on the circumference of the end face where the large-core-diameter optical fiber group contacts the positioning ring;

[0016] The positioning ring of the sliding sleeve assembly is provided with at least one positioning groove or positioning protrusion on its circumference, and the same number of matching positioning protrusions or positioning grooves are correspondingly provided on the circumference of the end face where the small-core-diameter optical fiber group contacts the positioning ring.

[0017] The beneficial effects of the present invention are as follows:

[0018] (1) The present invention divides the laser fiber catheter into a large-core fiber group and a small-core fiber group, and combines the large-core fiber group and the small-core fiber group with a secondary coupling device for installation. The large-core fiber group is fixedly installed on one side of the secondary coupling device through a rotary sleeve assembly and a clamping portion, and the small-core fiber group is conveniently and detachably installed on the other side of the secondary coupling device through a sliding sleeve assembly and a telescopic distance adjustment assembly. At the same time, the large-core fiber group is used to adapt to the excimer laser treatment equipment with low difficulty and high transmission efficiency, and the small-core fiber group can improve the passability of the catheter in the human body and facilitate reaching the lesion under the guidance of the guide wire, thereby further improving the treatment effect. After each use, only the small-core fiber group needs to be discarded and the large-core fiber group needs to be retained, so that multiple quick replacements and adaptations can be achieved, which greatly saves the cost of anti-ultraviolet fiber materials and has a good use effect.

[0019] (2) The present invention utilizes the rotary sleeve assembly and the clamping part in the secondary coupling device. After the large core diameter optical fiber group is installed, the rotation control of the large core diameter optical fiber group can be realized. In conjunction with the small core diameter optical fiber group fixed at the other end, when the laser power required for different lesions is different, the deflection of the large core diameter optical fiber group is realized by rotating the rotary sleeve assembly, and the overlapping area of ​​the light spot emitted by the large core diameter optical fiber in the large core diameter optical fiber group and the small core diameter optical fiber bundle in the small core diameter optical fiber group is controlled. By controlling the overlapping area of ​​the light spot, the energy received by the small core diameter optical fiber group is controlled, thereby achieving the effect of controlling the laser power at the output end of the laser optical fiber catheter. A wide range of adjustment and control can be performed according to actual use requirements.

[0020] (3) The present invention reuses the telescopic distance adjustment component and the sliding sleeve component. On the one hand, when the small core diameter optical fiber group is being installed, the telescopic distance adjustment component is used to control the sliding sleeve component to drive the internal damping sleeve small core diameter optical fiber group to move. In conjunction with the second installation tube and the second clamping part, the clamping and fixing of the sleeve small core diameter optical fiber group is automatically completed when the telescopic distance adjustment component moves forward horizontally, and the clamping can be released when the telescopic distance adjustment component is controlled to move in the reverse direction, thereby realizing the rapid disassembly of the small core diameter optical fiber group and facilitating timely replacement. On the other hand, after completing the automatic clamping, the telescopic distance adjustment component is used to further control the forward and backward movement of the sliding sleeve component, thereby changing the coupling distance between the sleeve small core diameter optical fiber group and the fixed large core diameter optical fiber group. For the small core diameter optical fiber bundle whose core diameter changes after replacement, the appropriate coupling distance is adjusted to adapt to the core diameter change, thereby ensuring that good coupling effect and coupling transmission efficiency are always maintained during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the present invention;

[0022] Figure 2 It is a cross-sectional schematic diagram of the present invention;

[0023] Figure 3 is a cross-sectional schematic diagram of the rotary sleeve assembly and the rotary drive member of the present invention;

[0024] Figure 4 is a schematic cross-sectional view of the sliding sleeve assembly of the present invention;

[0025] Figure 5 This is an exploded schematic diagram of the clamping portion 1 of the present invention;

[0026] Figure 6 This is an exploded schematic diagram of the hydraulic control unit of the present invention;

[0027] Figure 7 It is a cross-sectional schematic diagram of the first mounting barrel of the present invention;

[0028] Figure 8 Schematic diagram of the telescopic distance adjustment assembly and the second mounting cylinder of the present invention;

[0029] Figure 9 Schematic diagram of the second clamping part of the present invention;

[0030] Figure 10 is a schematic diagram of a large-core optical fiber assembly according to the present invention;

[0031] Figure 11 Schematic diagram of the small core diameter optical fiber group of the present invention Figure 1 ;

[0032] Figure 12 Schematic diagram of the small core diameter optical fiber group of the present invention Figure 2 .

[0033] In the figure: 1, mounting base; 2, mounting tube No. 1; 3, mounting tube No. 2; 4, rotary sleeve assembly; 41, rotary sleeve body; 42, internal reserved cavity; 43, adapter; 5, clamping part 1; 51, arc splint 1; 52, fixed sleeve; 53, movable block; 6, large core diameter optical fiber group; 61, catheter sleeve 1; 62, large core diameter optical fiber; 7, sliding sleeve assembly; 71, sliding sleeve body; 72, outer groove; 73, adapter cavity; 74, slider; 8, clamping part 2; 81, movable frame; 82, arc shaped splint two; 83, connecting rod; 84, inclined plane; 9, small-core diameter optical fiber group; 91, catheter sleeve two; 92, small-core diameter optical fiber bundle; 10, rotating drive member; 101, motor one; 102, gear one; 103, gear two; 11, telescopic pitch adjustment assembly; 111, bracket; 112, screw rod; 113, motor two; 114, movable connection block; 12, hydraulic control unit; 121, fixing cylinder; 122, adjusting rod; 123, piston plate; 13, positioning ring; 14, slide groove. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] like Figures 1 to 12 As shown, the embodiment of the present invention provides a rotatable secondary coupling device and a laser fiber conduit thereof, comprising a mounting seat 1, a No. 1 mounting cylinder 2 and a No. 2 mounting cylinder 3 fixedly connected to both sides of the mounting seat 1, a rotary sleeve assembly 4 is rotatably mounted inside the No. 1 mounting cylinder 2, a clamping portion 5 is evenly spaced on the inner wall of the rotary sleeve assembly 4, a rotary drive member 10 and a hydraulic control portion 12 are respectively provided on the outer side surface of the No. 1 mounting cylinder 2, the rotary drive member 10 controls the rotation of the rotary sleeve assembly 4, the hydraulic control portion 12 is fixedly sleeved in the laser fiber conduit in the rotary sleeve assembly 4 through the clamping portion 5, the interior of the No. 2 mounting cylinder 3 is slidably sleeved with a sliding sleeve assembly 7, and the sliding sleeve The outer side surface of the component 7 is provided with a clamping part 2 8 at equal intervals, and the top of the No. 2 mounting tube 3 is provided with a telescopic distance adjusting component 11, which controls the lateral reciprocating movement of the sliding sleeve component 7. The telescopic distance adjusting component 11 controls the clamping part 2 8 to automatically clamp the laser fiber optic conduit in the sliding sleeve component 7. A positioning ring 13 is fixedly provided inside the rotating sleeve component 4 and the sliding sleeve component 7. The laser overlapping area of ​​the laser fiber optic conduit inside the rotating sleeve component 4 and the laser fiber optic conduit inside the sliding sleeve component 7 is controlled by rotating the rotating sleeve component 4, and the distance between the laser fiber optic conduit inside the rotating sleeve component 4 and the laser fiber optic conduit inside the sliding sleeve component 7 is controlled by the telescopic distance adjusting component 11.

[0036] Example 1: When in use, first insert the large-core-diameter optical fiber group 6 along one side of the No. 1 mounting tube 2, and sleeve it inside the rotating sleeve assembly 4, and the inner end of the large-core-diameter optical fiber group 6 contacts the positioning ring 13. After completing the positioning and sleeve insertion, rotate the adjusting rod 122 in the hydraulic control part 12 to make the piston plate 123 compress the internal hydraulic oil in the fixed tube 121, so that the internal hydraulic oil is further filled into the arc cavity of the No. 1 mounting tube 2, and is further compressed into the fixed sleeve 52 of the clamping part 5 through the arc cavity. The internal hydraulic pressure of the fixed sleeve 52 increases, and the hydraulic pressure acts on the sleeved movable block 53, pushing the movable block 53 connected by the spring 1 to move, and driving the arc clamping plate 1 51 to clamp and fix along the outside of the large-core-diameter optical fiber group 6, so as to fix the small-core-diameter optical fiber group 9 is inserted into the corresponding sliding sleeve assembly 7 along the No. 2 mounting tube 3, and is inserted into the interior of the sliding sleeve body 71, and conflicts with the positioning ring 13 inside the sliding sleeve assembly 7. After completing the positioning sleeve connection, the telescopic distance adjustment assembly 11 is started, and the motor 2 113 controls the screw rod 112 to rotate, driving the movable connecting block 114 to move horizontally, and driving the sliding sleeve assembly 7 to slide along the interior of the No. 2 mounting tube 3, and move toward one side of the mounting seat 1. As the sliding sleeve assembly 7 drives the internal damping sleeved small core diameter optical fiber group 9 to move synchronously, the clamping part 2 8 in the sliding sleeve assembly 7 slides along the slide groove 14, and the movable frame 81 is squeezed and compressed by the top inclined surface 84, so that the movable frame 81 is further pressed into the outer groove 72 of the sliding sleeve body 71. At the same time, as the movable frame 81 is compressed , the arc-shaped clamping plate 2 82 is driven by the connecting rod 83 to squeeze and clamp along the outside of the small-core-diameter optical fiber group 9, and the clamping part 2 8 is compressed and hidden in the outer groove 72, completing the automatic clamping of the small-core-diameter optical fiber group 9; the rotating drive part 10 is started and the large-core-diameter optical fiber group 6 is energized, the motor 101 rotates through the gear 102, and the meshing gear 2 103 is rotated, thereby driving the rotary sleeve assembly 4 to rotate in the No. 1 mounting cylinder 2, so that the clamped large-core-diameter optical fiber group 6 follows the rotation, so that each large-core-diameter optical fiber 62 in the large-core-diameter optical fiber group 6 gradually rotates and is aligned with each small-core-diameter optical fiber bundle 92 in the small-core-diameter optical fiber group 9, and the output energy of the small-core-diameter optical fiber group 9 gradually increases during alignment and reaches a maximum value, determining that the large-core-diameter optical fiber 62 in the large-core-diameter optical fiber group 6 is gradually rotated and aligned with each small-core-diameter optical fiber bundle 92 in the small-core-diameter optical fiber group 9. The fiber group 6 and the small-core-diameter fiber group 9 are completely aligned. At this time, the light spots emitted by each large-core-diameter optical fiber 62 and each small-core-diameter optical fiber bundle 92 completely overlap. When the laser power required for different lesions is different, by starting the rotating drive member 10 and controlling the rotation of the rotary sleeve assembly 4, the internal large-core-diameter optical fiber group 6 is driven to deflect, so that the light spots emitted by each large-core-diameter optical fiber 62 and the ends of each small-core-diameter optical fiber bundle 92 are offset and misaligned, thereby controlling the overlapping area of ​​the light spots emitted by the large-core-diameter optical fibers 62 in the large-core-diameter optical fiber group 6 and the small-core-diameter optical fiber bundles in the small-core-diameter optical fiber group 9, and then controlling the energy received by the small-core-diameter optical fiber group. When the overlapping area is large, the output power is large, and when the overlapping area is small, the output power is small, thereby controlling the laser power at the output end of the laser fiber catheter.

[0037] First, by dividing the laser fiber catheter into a large-core fiber group 6 and a small-core fiber group 9, and combining the large-core fiber group 6 and the small-core fiber group 9 with a secondary coupling device for installation, the large-core fiber group 6 is fixedly installed on one side of the secondary coupling device through a rotary sleeve assembly 4 and a clamping portion, and the small-core fiber group 9 is conveniently and detachably installed on the other side of the secondary coupling device through a sliding sleeve assembly 7 and a telescopic distance adjustment assembly 11. At the same time, the large-core fiber group 6 is easily adapted to the excimer laser treatment equipment, and the small-core fiber group 9 can adapt to blood vessels of different diameters and improve its permeability inside the human body, so as to facilitate reaching the characteristics of the lesion under the guidance of the guide wire, further improving the treatment effect, and after each use, only the small-core fiber group 9 needs to be discarded and the large-core fiber group 6 needs to be retained, so as to achieve continuous and quick use, which greatly saves anti-ultraviolet fiber materials and has a good use effect.

[0038] In addition, by utilizing the rotary sleeve assembly 4 and the clamping part 5 in the secondary coupling device, after completing the sleeve installation of the large-core-diameter optical fiber group 6, the rotation control of the large-core-diameter optical fiber group 6 can be realized, and in conjunction with the small-core-diameter optical fiber group 9 fixed at the other end, when the laser power required for different lesions is different, the deflection of the large-core-diameter optical fiber group 6 is achieved by rotating the rotary sleeve assembly 4, and the overlapping area of ​​the light spot emitted by the large-core-diameter optical fiber 62 in the large-core-diameter optical fiber group 6 and the small-core-diameter optical fiber bundle in the small-core-diameter optical fiber group 9 is controlled. By controlling the overlapping area of ​​the light spot, the energy received by the small-core-diameter optical fiber group 9 is controlled, thereby achieving the effect of controlling the laser power at the output end of the laser optical fiber catheter, and a wide range of adjustment and control can be performed according to actual use requirements.

[0039] Example 2: After the small-core-diameter optical fiber group 9 is replaced and the core diameter of the small-core-diameter optical fiber bundle 92 in the replaced small-core-diameter optical fiber group 9 changes, the telescopic distance adjustment component 11 is started again, and the motor 2 113 controls the lateral movement of the movable connecting block 114 through the screw rod 112, thereby controlling the lateral movement of the sliding sleeve assembly 7, thereby changing the distance between the small-core-diameter optical fiber group 9 and the large-core-diameter optical fiber group 6 in the sliding sleeve assembly 7, adapting to the focusing coupling distance of the small-core-diameter optical fiber bundle 92 with different core diameters and the large-core-diameter optical fiber, and maintaining coupling stability.

[0040] In this embodiment, the light-emitting end of the large-core fiber conduit is polished to achieve a specific divergence angle, resulting in a focused, slightly diverging light beam. Small fiber conduits with different core diameters use different numbers of fibers and different fiber diameters, resulting in different required spot sizes at the coupling point. After light is emitted from the large-core fiber, the spot sizes inside and outside the focal point vary. Adjusting the coupling distance allows the coupling area of ​​the small-core fiber to be adjusted to the desired size.

[0041] like Figure 11 and Figure 12As shown, in the present invention, an example of a method for completing focus alignment of optical fiber groups with different diameters and different numbers on the same path is described as follows:

[0042] 1. 2.5mm small core diameter optical fiber uses a larger optical fiber diameter and a large number of optical fibers, which requires a larger spot area and is therefore farther from the focal point;

[0043] 2. 0.9mm small core diameter optical fiber uses a small optical fiber diameter, a small number of optical fibers, and requires a smaller spot area, so it is closer to the focus.

[0044] First, by reusing the telescopic distance adjustment component 11 and the sliding sleeve component 7, on the one hand, when the small-core-diameter optical fiber group 9 is being installed, the telescopic distance adjustment component 11 is used to control the sliding sleeve component 7 to drive the small-core-diameter optical fiber group 9 with internal damping to move, and cooperate with the No. 2 installation tube 3 and the second clamping part 8 to automatically complete the clamping and fixation of the small-core-diameter optical fiber group 9 when moving forward horizontally, and the clamping can be released when the telescopic distance adjustment component 11 is controlled to move in the reverse direction, thereby realizing the rapid disassembly of the small-core-diameter optical fiber group 9 and facilitating timely replacement. On the other hand, after completing the automatic clamping, the telescopic distance adjustment component 11 is used to further control the forward and backward movement of the sliding sleeve component 7, so as to change the coupling distance between the small-core-diameter optical fiber group 9 and the fixed large-core-diameter optical fiber group 6. For the small-core-diameter optical fiber bundle 92 with a changed core diameter after replacement, the appropriate coupling distance is adjusted to adapt to the core diameter change, thereby ensuring good coupling effect and coupling transmission efficiency at all times during use.

[0045] Among them, the rotary sleeve assembly 4 includes a rotary sleeve body 41, an internal reserved cavity 42 and an adapter port 43. The outer side surface of the rotary sleeve body 41 is fixedly sleeved with a snap ring, and the inner wall of the No. 1 mounting cylinder 2 is provided with an annular cavity. The snap ring is rotatably sleeved in the arc cavity. The internal reserved cavity 42 is opened inside the rotary sleeve body 41. The adapter port 43 is opened on the inner wall of the rotary sleeve body 41, and the adapter port 43 is communicated with the internal reserved cavity 42. The outer side surface of the rotary sleeve body 41 is provided with a side port, and the internal reserved cavity 42 is communicated with the annular cavity through the side port. The clamping part 5 includes an arc-shaped splint 51, a fixed sleeve 52 and a movable block 53. The arc-shaped splint 51 is adapted in the adapter port 43, the fixed sleeve 52 is fixed in the internal reserved cavity 42, one end of the movable block 53 is fixedly connected to the arc-shaped splint 51, and the movable block 53 is elastically connected to the fixed sleeve 52 through a spring, and the fixed sleeve 52 is communicated with the annular cavity.

[0046] The rotary sleeve assembly 4 rotates in the No. 1 installation tube 2 to realize the rotation control of the internal sleeve clamped large-core optical fiber group 6. The clamping ring and the annular cavity cooperate to ensure the stable rotation of the rotary sleeve assembly 4. At the same time, the arc cavity is also used to guide the flow of hydraulic oil. The internal reserved cavity 42 adapts to the installation arrangement of the clamping part 5. The surrounding clamping parts 5 ensure stable clamping and fixation of the large-core optical fiber group 6. The clamping part 5 is pushed by the internal hydraulic pressure to provide clamping power. The movable block 53 moves in the fixed sleeve 52 in a dynamic and sealed manner.

[0047] Among them, the rotating driving component 10 includes motor 101, gear 102 and gear 2 103. Gear 102 is fixedly sleeved on the output shaft of motor 101, gear 2 103 is fixedly sleeved on the outer surface of the rotating sleeve body 41, and gear 2 103 is meshed with gear 1 102.

[0048] The rotary drive member 10 controls and drives the rotation of the rotary sleeve assembly 4 to provide power for the rotation control.

[0049] Among them, the hydraulic control unit 12 includes a fixed cylinder 121, an adjusting rod 122 and a piston plate 123. The fixed cylinder 121 is fixed to the outside of the No. 1 mounting cylinder 2, and the fixed cylinder 121 is connected to the annular cavity. The piston plate 123 is movably sleeved in the fixed cylinder 121. One end of the adjusting rod 122 moves through the fixed cylinder 121 and extends into the fixed cylinder 121. The inner end of the die-cutting adjusting rod 122 is fixedly connected to the piston plate 123. The piston plate 123 is elastically connected to the fixed cylinder 121 through spring 2, and the fixed cylinder 121 is filled with lubricating oil.

[0050] The hydraulic control unit 12 realizes the regulation and control of the internal hydraulic pressure through manual selection, and realizes the clamping and fixation of the large-core-diameter optical fiber group 6 by enhancing the hydraulic pressure. Since the large-core-diameter optical fiber group 6 is replaced less frequently, manual control is adopted to save control costs.

[0051] When locking sill 75, the positioning plate 74a and 7b of locking sill 73 is fixed with the bolt, and the bolt has sealing engagement with each other, and the pin is located at position 142, and the pin is located at position 142 of locking sill 73. When locking sill 75 is positioned at the top of locking sill 74, the pin is located at the bottom of the locking sill 73.

[0052] The sliding sleeve assembly 7 controls the lateral movement of the internally sleeved small-core optical fiber group 9 by lateral movement, and the clamping part 2 8 is elastically arranged on the outside of the sliding sleeve assembly 7. By cooperating with the telescopic distance adjustment assembly 11 and the second mounting tube 3, while realizing the movement control of the sliding sleeve assembly 7, the automatic compression clamping is realized by guiding and squeezing the clamping part 2 8, thereby completing the automatic clamping operation of the small-core optical fiber group 9. For the small-core optical fiber group 9 that needs to be frequently detachable and replaced, the clamping is completed by the clamping part 2 8 under moving extrusion, and the clamping is released when it is pushed out in the reverse direction. The operation is simple and the replacement is convenient.

[0053] Among them, the telescopic distance adjustment component 11 includes a bracket 111, a screw rod 112, a second motor 113 and a movable connecting block 114. The screw rod 112 is rotatably set in the bracket 111, and the second motor 113 controls the forward and reverse rotation of the screw rod 112. The movable connecting block 114 is threadedly sleeved on the outer surface of the screw rod 112, and the movable connecting block 114 is fixed on the slider 74 of the sliding sleeve assembly 7.

[0054] The telescopic distance adjustment component 11 realizes reciprocating lateral movement through the forward and reverse rotation of the screw rod 112 and the connected sliding sleeve component 7. On the one hand, it completes the automatic clamping action of the clamping part 5, and on the other hand, it completes the adjustment of the coupling distance while controlling the lateral movement of the sliding sleeve component 7.

[0055] Among them, the laser fiber optic conduit includes a large-core diameter fiber group 6, a small-core diameter fiber group 9 and a rotatable secondary coupling device. The large-core diameter fiber group 6 is sleeved inside the rotating sleeve assembly 4, and the small-core diameter fiber group 9 is sleeved in the sliding sleeve assembly 7. The large-core diameter fiber group 6 includes a conduit sleeve 1 61, and a large-core diameter optical fiber 62 arranged in the conduit sleeve 1 61. The small-core diameter optical fiber group 9 includes a conduit sleeve 2 91, and a small-core diameter optical fiber bundle 92 arranged in the conduit sleeve 2 91. There are no less than 6 large-core diameter optical fibers 62, and they are distributed around the axis of the large-core diameter optical fiber group 6 around the circumference. There are no less than 6 small-core diameter optical fiber bundles 92, and they are distributed around the axis of the small-core diameter optical fiber group 9 around the circumference. Each large-core diameter optical fiber 62 is coaxial with each small-core diameter optical fiber bundle 92.

[0056] Laser is emitted through the large-core optical fiber 62 in the large-core optical fiber group 6, and laser transmission is achieved after coupling with the small-core optical fiber bundle 92 in the small-core optical fiber group 9. Each large-core optical fiber 62 is coaxial with each small-core optical fiber bundle 92, ensuring that when the large-core optical fiber 62 is deflected, the overlapping light spot area of ​​each large-core optical fiber 62 and the small-core optical fiber bundle 92 is consistent, thereby achieving uniform control.

[0057] The working principle and use process of the present invention are as follows: when in use, the large-core-diameter optical fiber group 6 is first inserted along one side of the No. 1 installation tube 2, and is sleeved inside the rotary sleeve assembly 4, and the inner end of the large-core-diameter optical fiber group 6 contacts the positioning ring 13. After the positioning and sleeve insertion are completed, the adjusting rod 122 in the hydraulic control part 12 is rotated to make the piston plate 123 compress the internal hydraulic oil in the fixed tube 121, so that the internal hydraulic oil is further filled into the arc cavity of the No. 1 installation tube 2, and is further compressed into the fixed sleeve 52 of the clamping part 5 through the arc cavity. The internal hydraulic pressure of the fixed sleeve 52 increases, and the hydraulic pressure acts on the sleeved movable block 53, pushing the movable block 53 connected by the spring 1 to move, and driving the arc clamping plate 1 51 to clamp and fix along the outside of the large-core-diameter optical fiber group 6, The small core diameter optical fiber group 9 is inserted into the corresponding sliding sleeve assembly 7 along the second installation tube 3, and is inserted into the interior of the sliding sleeve body 71, and conflicts with the positioning ring 13 inside the sliding sleeve assembly 7. After completing the positioning sleeve connection, the telescopic distance adjustment assembly 11 is started, and the motor 2 113 controls the screw rod 112 to rotate, driving the movable connection block 114 to move horizontally, and driving the sliding sleeve assembly 7 to slide along the interior of the second installation tube 3, and move toward one side of the mounting seat 1. As the sliding sleeve assembly 7 drives the internal damping of the small core diameter optical fiber group 9 to move synchronously, the clamping part 2 8 in the sliding sleeve assembly 7 slides along the sliding groove 14, and the movable frame 81 is squeezed and compressed by the top inclined surface 84, so that the movable frame 81 is further pressed into the outer groove 72 of the sliding sleeve body 71. At the same time, as the movable frame 8 1 is compressed, and the arc-shaped clamping plate 2 82 is driven by the connecting rod 83 to squeeze and clamp along the outside of the small-core-diameter optical fiber group 9, and the clamping part 2 8 is compressed and hidden in the outer groove 72, completing the automatic clamping of the small-core-diameter optical fiber group 9; the rotating driving part 10 is started and the large-core-diameter optical fiber group 6 is energized, and the motor 101 rotates through the gear 102, and the meshing gear 2 103 is rotated, thereby driving the rotary sleeve assembly 4 to rotate in the No. 1 mounting cylinder 2, so that the clamped large-core-diameter optical fiber group 6 follows the rotation, so that each large-core-diameter optical fiber 62 in the large-core-diameter optical fiber group 6 gradually rotates and is aligned with each small-core-diameter optical fiber bundle 92 in the small-core-diameter optical fiber group 9, and the output energy of the small-core-diameter optical fiber group 9 gradually increases during alignment, and reaches a maximum value, determining that the large-core-diameter optical fiber 62 in the large-core-diameter optical fiber group 6 is gradually rotated and aligned with each small-core-diameter optical fiber bundle 92 in the small-core-diameter optical fiber group 9. The large-core-diameter optical fiber group 6 and the small-core-diameter optical fiber group 9 are completely aligned. At this time, the light spots emitted by each large-core-diameter optical fiber 62 and each small-core-diameter optical fiber bundle 92 completely overlap. When the laser power required for different lesions is different, by starting the rotary drive member 10 and controlling the rotation of the rotary sleeve assembly 4, and driving the internal large-core-diameter optical fiber group 6 to deflect, the light spots emitted by each large-core-diameter optical fiber 62 and the ends of each small-core-diameter optical fiber bundle 92 are offset and misaligned, thereby controlling the overlapping area of ​​the light spots emitted by the large-core-diameter optical fibers 62 in the large-core-diameter optical fiber group 6 and the small-core-diameter optical fiber bundles in the small-core-diameter optical fiber group 9, and further controlling the energy received by the small-core-diameter optical fiber group. When the overlapping area is large, the output power is large, and when the overlapping area is small, the output power is small, thereby controlling the laser power at the output end of the laser optical fiber catheter.After the small-core fiber group 9 is replaced and the core diameter of the small-core fiber bundle 92 in the replaced small-core fiber group 9 changes, the telescopic distance adjustment assembly 11 is activated again. Motor 2 113 controls the lateral movement of the movable connecting block 114 via the screw rod 112, thereby controlling the lateral movement of the sliding sleeve assembly 7. This changes the distance between the small-core fiber group 9 and the large-core fiber group 6 in the sliding sleeve assembly 7, adapting the focusing coupling distance between the small-core fiber bundle 92 and the large-core fiber of different core diameters to maintain coupling stability.

[0058] Example 3: Based on the above-mentioned Examples 1 and 2, in this example, a positioning groove (or a positioning protrusion) is provided on the circumference of the positioning ring 13 of the rotary sleeve assembly 4 of the rotatable secondary coupling device, and an adaptive positioning protrusion (or a positioning groove) is coaxially provided at a corresponding position on the circumference of the end face where the large-core optical fiber group 6 contacts the positioning ring 13.

[0059] The positioning ring 13 of the sliding sleeve assembly 7 of the retractable secondary coupling device is provided with at least one positioning groove (or a positioning bump) on its circumference, and an adaptive positioning bump (or a positioning groove) is coaxially provided at a corresponding position on the circumference of the end face where the small-core optical fiber group 9 contacts the positioning ring 13.

[0060] When the large-core-diameter optical fiber group 6 or the small-core-diameter optical fiber group 9 is inserted into the rotary sleeve assembly 4 or the sliding sleeve assembly 7 of the rotatable secondary coupling device, it is only necessary to rotate the large-core-diameter optical fiber group 6 or the small-core-diameter optical fiber group 9 until its positioning protrusion is inserted into the positioning groove to complete the adaptation, thereby ensuring that the large-core-diameter optical fiber group 6 and the small-core-diameter optical fiber group 9 remain coaxial inside the rotatable secondary coupling device, thereby ensuring the secondary coupling effect.

[0061] While embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions, and variations may be made to these embodiments without departing from the principles and spirit of the invention, and that the scope of the invention is defined by the appended claims and their equivalents.

Claims

1. A retractable secondary coupling device, comprising a mounting base (1), a first mounting cylinder (2) and a second mounting cylinder (3) fixedly connected to both sides of the mounting base (1), characterized in that: The first installation cylinder (2) is internally rotatably mounted with a rotary sleeve assembly (4), and the inner wall of the rotary sleeve assembly (4) is provided with a clamping portion (5) at equal intervals. The outer side surface of the first installation cylinder (2) is provided with a rotary drive member (10) and a hydraulic control member (12). The rotary drive member (10) controls the rotation of the rotary sleeve assembly (4), and the hydraulic control member (12) is fixedly sleeved with a laser fiber conduit in the rotary sleeve assembly (4) through the clamping portion (5). The second installation cylinder (3) is internally slidably sleeved with a sliding sleeve assembly (7), and the outer side surface of the sliding sleeve assembly (7) is provided with a clamping portion (8) at equal intervals. A telescopic distance adjustment component (11) is provided on the top, and the telescopic distance adjustment component (11) controls the lateral reciprocating movement of the sliding sleeve component (7). The telescopic distance adjustment component (11) controls the clamping part 2 (8) to automatically clamp the laser optical fiber conduit in the sliding sleeve component (7). A positioning ring (13) is fixedly provided inside the rotating sleeve component (4) and the sliding sleeve component (7). The laser overlapping area of ​​the laser optical fiber conduit inside the rotating sleeve component (4) and the laser optical fiber conduit inside the sliding sleeve component (7) is controlled by rotating the rotating sleeve component (4), and the distance between the laser optical fiber conduit inside the rotating sleeve component (4) and the laser optical fiber conduit inside the sliding sleeve component (7) is controlled and adjusted by the telescopic distance adjustment component (11); The rotary sleeve assembly (4) includes a rotary sleeve body (41), an internal reserved cavity (42) and an adapter (43); a snap ring is fixedly sleeved on the outer side surface of the rotary sleeve body (41), and an annular cavity is provided on the inner wall of the No. 1 mounting cylinder (2); the snap ring is rotatably sleeved in the arc cavity; the internal reserved cavity (42) is provided inside the rotary sleeve body (41); the adapter (43) is provided on the inner wall of the rotary sleeve body (41), and the adapter (43) is communicated with the internal reserved cavity (42); a side port is provided on the outer side surface of the rotary sleeve body (41), and the internal reserved cavity (42) is communicated with the annular cavity through the side port; The sliding sleeve assembly (7) includes a sliding sleeve body (71), an outer groove (72), an adapting cavity (73) and a slider (74), wherein the slider (74) is fixedly connected to the sliding sleeve body (71), a sliding groove (14) is provided on the outer side surface of the second mounting cylinder (3), and the slider (74) is slidably sleeved in the sliding groove (14), the adapting cavity (73) is provided on the inner wall of the sliding sleeve body (71), the outer groove (72) is provided on the outer side surface of the sliding sleeve body (71), the outer groove (72) and the adapting cavity (73) correspond one to one, and the outer groove (72) and the sliding groove (14) correspond one to one; The telescopic distance adjustment assembly (11) comprises a bracket (111), a screw rod (112), a second motor (113) and a movable connecting block (114); the screw rod (112) is rotatably arranged in the bracket (111); the second motor (113) controls the forward and reverse rotation of the screw rod (112); the movable connecting block (114) is threadedly sleeved on the outer surface of the screw rod (112); and the movable connecting block (114) is fixed on a slider (74) of the sliding sleeve assembly (7).

2. The rotatable secondary coupling device according to claim 1, characterized in that: The clamping portion 1 (5) includes an arc-shaped clamping plate 1 (51), a fixed sleeve (52) and a movable block (53), wherein the arc-shaped clamping plate 1 (51) is adapted in the adapting port (43), the fixed sleeve (52) is fixed in the internal reserved cavity (42), one end of the movable block (53) is fixedly connected to the arc-shaped clamping plate 1 (51), and the movable block (53) is elastically connected to the fixed sleeve (52) via a spring 1, and the fixed sleeve (52) is communicated with the annular cavity.

3. The rotatable secondary coupling device according to claim 2, characterized in that: The rotating drive member (10) includes a motor 1 (101), a gear 1 (102) and a gear 2 (103), wherein the gear 1 (102) is fixedly sleeved on the output shaft of the motor 1 (101), and the gear 2 (103) is fixedly sleeved on the outer surface of the rotary sleeve body (41), and the gear 2 (103) is meshedly connected with the gear 1 (102).

4. The rotatable secondary coupling device according to claim 3, characterized in that: The hydraulic control unit (12) includes a fixed cylinder (121), an adjusting rod (122) and a piston plate (123). The fixed cylinder (121) is fixed to the outside of the No. 1 mounting cylinder (2), and the fixed cylinder (121) is communicated with the annular cavity. The piston plate (123) is movably sleeved in the fixed cylinder (121). One end of the adjusting rod (122) movably passes through the fixed cylinder (121) and extends into the fixed cylinder (121). The inner end of the die-cutting adjusting rod (122) is fixedly connected to the piston plate (123). The piston plate (123) is elastically connected to the fixed cylinder (121) through a second spring. The fixed cylinder (121) is filled with lubricating oil.

5. The rotatable secondary coupling device according to claim 4, characterized in that: The clamping part 2 (8) includes a movable frame (81), an arc-shaped clamping plate 2 (82), a connecting rod (83) and an inclined surface (84). The movable frame (81) is elastically connected to the outer groove (72) through a spring 3. The arc-shaped clamping plate 2 (82) is adapted to be fitted in the adapting cavity (73). The connecting rod (83) is fixedly connected between the arc-shaped clamping plate 2 (82) and the movable frame (81). The inclined surface (84) is provided on the movable frame (81) and is close to the left end of the slide groove (14).

6. A laser fiber catheter, characterized in that: The laser fiber conduit comprises a large-core-diameter optical fiber group (6) and a small-core-diameter optical fiber group (9), and the rotatable secondary coupling device according to claim 1; the large-core-diameter optical fiber group (6) is sleeved inside a rotary sleeve assembly (4), and the small-core-diameter optical fiber group (9) is sleeved in a sliding sleeve assembly (7); the large-core-diameter optical fiber group (6) comprises a conduit sleeve 1 (61), and a large-core-diameter optical fiber (62) arranged in the conduit sleeve 1 (61); the small-core-diameter optical fiber group (9) comprises a conduit sleeve 2 (91), and a small-core-diameter optical fiber bundle (92) arranged in the conduit sleeve 2 (91); the number of the large-core-diameter optical fibers (62) is not less than 6 and is distributed circumferentially around the axis of the large-core-diameter optical fiber group (6); the number of the small-core-diameter optical fiber bundle (92) is not less than 6 and is distributed circumferentially around the axis of the small-core-diameter optical fiber group (9); each large-core-diameter optical fiber (62) is coaxial with each small-core-diameter optical fiber bundle (92).

7. The laser fiber catheter according to claim 6, characterized in that: The positioning ring (13) of the rotary sleeve assembly (4) is provided with at least one positioning groove or positioning protrusion on its circumference, and the same number of matching positioning protrusions or positioning grooves are correspondingly provided on the circumference of the end face where the large-core-diameter optical fiber group (6) contacts the positioning ring (13); the positioning ring (13) of the sliding sleeve assembly (7) is provided with at least one positioning groove or positioning protrusion on its circumference, and the same number of matching positioning protrusions or positioning grooves are correspondingly provided on the circumference of the end face where the small-core-diameter optical fiber group (9) contacts the positioning ring (13).

Images