Adjustable laser fiber guide device for ureteroscopic lithotripsy

Abstract

This invention discloses an adjustable laser fiber optic guidance device for ureteroscopic lithotripsy, relating to the field of laser fiber optic guidance technology. The invention includes an operating handle, a three-way connector, and a laser fiber body. A flexible endoscope tube is connected to the lower part of the operating handle. An insertion hole communicating with the flexible endoscope tube is provided on the upper side of the operating handle. A slot is provided within the insertion hole, and multiple elastic clips are arranged on the outer periphery of the slot. A rotary transmission assembly connected to the multiple elastic clips is provided on one side of the slot. This invention utilizes a compression and retraction component located on the outer side of the operating interface. When the compression and retraction component is tightened, its inner wall generates radial compression force on multiple elastic clips on the inner side of the operating interface, causing the elastic clips to converge towards the center and tightly clamp the laser fiber body, achieving dual fixation of the laser fiber body in both the axial and circumferential directions.

Description

Technical Field

[0001] This invention belongs to the field of laser fiber guidance, and more specifically, relates to an adjustable laser fiber guidance device for ureteroscopic lithotripsy. Background Technology

[0002] Urinary tract stones (such as upper urinary tract stones) are a common disease worldwide. Currently, ureteroscopic lithotripsy combined with holmium laser lithotripsy has become one of the preferred minimally invasive methods for treating kidney stones and upper ureteral stones. This technique enters through the body's natural cavities, using a flexible ureteroscope to reach the renal pelvis and calyces, and then uses a laser fiber to break up the stones. It has the advantages of minimal trauma, rapid recovery, and repeatability.

[0003] Currently, laser fiber optic cables are typically inserted manually by the surgeon through the working channel of a flexible endoscope. During surgery, especially when dealing with stones at tricky angles, such as those in the lower calyx of the kidney, frequent and precise adjustments to the fiber tip are required. Manual operation makes it difficult to achieve minute and stable displacement control. The fiber tip is prone to sliding on the target stone surface or accidentally retracting, resulting in inaccurate energy release. This not only affects lithotripsy efficiency but may also increase the risk of complications such as ureteral mucosal damage and perforation due to accidental laser energy acting on surrounding tissues. Furthermore, prolonged hand-held operation of the fiber increases surgeon fatigue, further affecting the stability and accuracy of the procedure. Moreover, traditional laser fiber optic guidance methods lack effective fixation and limiting structures. During lithotripsy, the fiber may shift position due to the recoil of stone fragments or the shaking of the flexible endoscope, making it difficult to maintain a stable and continuous effect on the target stone. This prolongs the operation time and reduces the safety and effectiveness of the procedure.

[0004] In view of this, the present invention is proposed. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to overcome the shortcomings of the prior art and provide an adjustable laser fiber optic guidance device for ureteroscopic lithotripsy, which solves the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by the present invention is as follows: An adjustable laser fiber guide device for ureteroscopic lithotripsy includes: an operating handle, a three-way tube, and a laser fiber body. The operating handle is connected to the lower part of the flexible endoscope tube. The upper side of the operating handle has an insertion hole that communicates with the flexible endoscope tube. The insertion hole has a slot. Multiple elastic clips are provided on the outer periphery of the slot. A rotary transmission assembly connected to the multiple elastic clips is provided on one side of the slot. The upper side of the three-way pipe is provided with an operation interface, and the periphery of the end of the three-way pipe is fixedly connected with a plurality of teeth that drive the rotary transmission assembly. The periphery of the second guide tube is provided with an annular groove that engages with a plurality of elastic clips. The laser fiber body is located inside the flexible lens tube through the three-way tube; The operation interface has multiple elastic clips connected to the inner side of the laser fiber body, and the operation interface has a screw threaded connection to a compression shrinking member corresponding to the multiple elastic clips.

[0007] Optionally, the compression shrinking component includes a rotating cylinder threaded to the outside of the operating interface and a compression limiting ring fixedly connected to the upper side of the rotating cylinder and abutting against the plurality of elastic clips.

[0008] Optionally, the elastic clamp includes a connecting part fixedly connected to the inside of the operating interface and an elastic clamping part extending from the connecting part toward the central axis of the operating interface. The inner side of the end of the elastic clamping part away from the connecting part is provided with an arc-shaped clamping surface, and the outer wall of the elastic clamping part is an inclined surface that cooperates with the inner wall of the compression limiting ring.

[0009] Optionally, a rubber pad is provided on one side of the arc-shaped clamping surface.

[0010] Optionally, a water injection connector is connected to the middle of the tee pipe.

[0011] Optionally, the elastic locking member includes a placement groove formed around the slot, a locking block located in the placement groove and engaging with the annular locking groove, and a spring disposed between the locking block and the placement groove, wherein the locking block cooperates with the rotary transmission assembly.

[0012] Optionally, the cross-sections of the card block and the annular card slot are trapezoidal.

[0013] Optionally, an annular groove is provided around the slot, and the rotary transmission assembly includes an internal toothed ring that slides inside the annular groove and meshes with a plurality of teeth, and a connecting rope connecting the internal toothed ring and a plurality of locking blocks.

[0014] Optionally, the connecting rope is located inside the spring.

[0015] Optionally, a bearing is installed inside the annular groove, and the internal gear ring is disposed inside the bearing.

[0016] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time: By using a compression shrinking component on the outside of the operating interface, when the compression shrinking component is tightened, its inner wall can generate radial compression force on multiple elastic clips on the inside of the operating interface, causing the elastic clips to converge towards the center and tightly clamp the laser fiber body. This achieves dual fixation of the laser fiber body in both the axial and circumferential directions. This design allows the operator to flexibly adjust the clamping force by rotating the compression shrinking component according to the operational needs. It ensures that the laser fiber body will not be accidentally displaced due to external forces during lithotripsy, guaranteeing the accuracy of the energy release position. When the fiber position needs to be adjusted, the clamping component can be quickly released by rotating it in the opposite direction, facilitating the fiber advancement or retraction operation. This effectively improves the convenience and stability of the operation and reduces the risk of complications caused by manual operation fatigue or fiber slippage. By using an elastic clip inside the socket, which engages with the annular groove on the periphery of the T-tube, a quick snap-fit ​​fixation can be achieved after the T-tube is inserted into the socket, avoiding the loosening or detachment problems that may occur in traditional connection methods, thus providing a fundamental guarantee for the stable operation of the laser fiber body. Through the included rotary transmission component, when the T-tube needs to be disassembled, simply rotating the T-tube will cause multiple teeth on its end periphery to engage with the rotary transmission component, disengaging the elastic clip from the annular groove. This allows the T-tube to be easily pulled out of the socket, achieving rapid disassembly between the T-tube and the operating handle. This facilitates postoperative cleaning, disinfection, replacement, and maintenance of various components, effectively improving the equipment's turnover efficiency and operational safety.

[0017] The specific embodiments of the present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings: Figure 1 This is a schematic diagram of a laser fiber guiding device. Figure 2 This is a schematic diagram of the operating handle structure; Figure 3 This is a schematic diagram of a tee pipe structure; Figure 4 This is a schematic diagram of the rotary transmission assembly structure; Figure 5 for Figure 4 Schematic diagram of the structure at point A in the middle.

[0019] The attached diagram lists the components represented by each number as follows: Operating handle 1, T-connector 2, socket 3, flexible lens tube 4, slot 5, annular groove 6, teeth 7, elastic clip 8, placement groove 801, clip 802, spring 803, annular channel 9, rotary transmission assembly 10, internal toothed ring 1001, connecting rope 1002, bearing 11, laser fiber body 12, water injection connector 13, operating interface 14, elastic clip 15, compression shrinking component 16, rotating drum 1601, compression limiting ring 1602.

[0020] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the invention in any way, but rather to illustrate the concept of the invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0021] The invention will now be described in further detail with reference to the accompanying drawings.

[0022] Please see Figure 1-5 As shown, this embodiment provides an adjustable laser fiber guide device for ureteroscopic lithotripsy, including: an operating handle 1, a three-way tube 2 and a laser fiber body 12. The operating handle 1 is connected to a flexible endoscope tube 4 below. The upper side of the operating handle 1 is provided with a socket 3 that communicates with the flexible endoscope tube 4. A slot 5 is provided in the socket 3. Multiple elastic clips 8 are provided on the outer periphery of the slot 5. A rotary transmission assembly 10 connected to the multiple elastic clips 8 is provided on one side of the slot 5. The upper side of the three-way pipe 2 is provided with an operation interface 14. Multiple teeth 7 that are driven by the rotary transmission component 10 are fixedly connected to the periphery of the end of the three-way pipe 2. The periphery of the second conduit 2 is provided with an annular groove 6 that engages with multiple elastic clips 8. The laser fiber body 12 is located inside the flexible lens tube 4 through the three-way tube 2; The operation interface 14 has multiple elastic clips 15 connected to the inner side, corresponding to the laser fiber body 12, and the operation interface 14 has a screw threaded connection to a compression shrinking member 16 corresponding to the multiple elastic clips 15.

[0023] By using the compression shrink member 16 provided on the outside of the operation interface 14, when the compression shrink member 16 is tightened, its inner wall can generate radial compression force on the multiple elastic clips 15 on the inside of the operation interface 14, causing the elastic clips 15 to retract towards the center and tightly clamp the laser fiber body 12, thus achieving dual fixation of the laser fiber body 12 in both the axial and circumferential directions. This design allows the operator to flexibly adjust the clamping force by rotating the compression shrink member 16 according to the operation requirements. This ensures that the laser fiber body 12 will not be accidentally displaced due to external forces during lithotripsy, guaranteeing the accuracy of the energy release position. Furthermore, when the fiber position needs to be adjusted, the clamping can be quickly released by rotating the compression shrink member 16 in the opposite direction, facilitating the fiber advancement or retraction operation. This effectively improves the convenience and stability of the operation and reduces the risk of complications caused by manual operation fatigue or fiber slippage. The elastic clip 8 installed in the socket 3 engages with the annular groove 6 on the periphery of the three-way tube 2, enabling quick locking and fixation after the three-way tube 2 is inserted into the socket 3. This avoids the loosening or detachment problems that may occur in traditional connection methods, providing a basic guarantee for the stable operation of the laser fiber body 12. The rotary transmission component 10 allows the three-way tube 2 to be easily disassembled by simply rotating it. Multiple teeth 7 on its end periphery engage with the rotary transmission component 10, causing the elastic clip 8 to disengage from the annular groove 6. This allows the three-way tube 2 to be easily pulled out of the socket 3, achieving quick disassembly between the three-way tube 2 and the operating handle 1. This facilitates postoperative cleaning, disinfection, replacement, and maintenance of various components, effectively improving the equipment's turnover efficiency and operational safety.

[0024] like Figure 2-3 As shown, the compression shrinking component 16 in this embodiment includes a rotating cylinder 1601 threadedly connected to the outside of the operating interface 14, and a compression limiting ring 1602 fixedly connected to the upper side of the rotating cylinder 1601 and abutting against a plurality of elastic clamping pieces 15; the elastic clamping piece 15 includes a connecting part fixedly connected to the inside of the operating interface 14, and an elastic clamping part extending from the connecting part toward the central axis of the operating interface 14. An arc-shaped clamping surface is provided on the inner side of the end of the elastic clamping part away from the connecting part, and the outer wall of the elastic clamping part is an inclined surface that cooperates with the inner wall of the compression limiting ring 1602; a rubber pad is provided on one side of the arc-shaped clamping surface.

[0025] When the rotating drum 1601 is rotated clockwise, it moves upward along the external thread of the operating interface 14, simultaneously driving the compression limiting ring 1602 fixedly connected to its upper end upward. Since the inner wall of the compression limiting ring 1602 cooperates with the outer inclined surface of the elastic clamping part, as the compression limiting ring 1602 moves upward, its inner wall generates a gradually increasing radial compression force on the outer inclined surface of the elastic clamping part. This compression force forces the elastic clamping part to retract towards the central axis of the operating interface 14, thereby causing the arc-shaped clamping surfaces on the inner sides of multiple elastic clamping parts to jointly clamp the laser fiber body 12 passing through it. The rubber pad provided on one side of the arc-shaped clamping surface not only increases the friction between the laser fiber body 12 and the laser fiber body 12, improving the stability of the clamping and preventing accidental slippage of the fiber during surgical operations, but also protects the outer surface of the laser fiber body 12, avoiding damage to the fiber surface that may be caused by rigid clamping. Conversely, when... When it is necessary to release the clamp on the laser fiber body 12 for position adjustment, simply rotate the rotating cylinder 1601 counterclockwise. The rotating cylinder 1601 will drive the compression limiting ring 1602 to move downwards along the external thread of the operating interface 14. The squeezing force of the inner wall of the compression limiting ring 1602 on the outer inclined surface of the elastic clamping part will gradually decrease until it disappears. At this time, the elastic clamping part will open away from the central axis under the action of its own elastic restoring force, and the clamping state between the arc-shaped clamping surface and the laser fiber body 12 will be released. The operator can then easily push or pull the laser fiber body 12 to adjust its axial position within the operating interface 14. This structural design makes the clamping and releasing operation of the laser fiber body 12 convenient and efficient, which can be completed simply by rotating the rotating cylinder 1601. Moreover, the clamping force can be finely adjusted by the degree of rotation of the rotating cylinder 1601 to adapt to laser fibers of different diameters or different clamping requirements, thereby enhancing the versatility and operational flexibility of the device. like Figure 3 As shown, a water injection connector 13 is connected to the middle of the three-way pipe 2 in this embodiment.

[0026] The water inlet connector 13 provides a convenient irrigation channel during the procedure. In actual ureteroscopic lithotripsy, the water inlet connector 13 continuously or intermittently injects irrigation fluid such as saline into the body. On the one hand, it provides a clear field of vision, allowing doctors to more clearly observe the location and size of the stone and the internal condition of the ureter, ensuring that the laser fiber can accurately target and fragment the stone. On the other hand, the appropriate water flow can also help to flush out stone fragments in a timely manner, preventing stone accumulation from affecting the field of vision or causing ureteral obstruction, thereby improving the efficiency and safety of the operation. The water inlet connector 13 is usually designed with a standard interface, which can be easily connected to external infusion devices or irrigation equipment. Its compact structure can effectively prevent leakage of irrigation fluid during injection, ensuring the cleanliness of the surgical environment and the smooth operation.

[0027] like Figure 4-5 As shown, the elastic locking member 8 in this embodiment includes a placement groove 801 formed on the periphery of the slot 5, a locking block 802 located in the placement groove 801 and engaging with the annular locking groove 6, and a spring 803 disposed between the locking block 802 and the placement groove 801. The locking block 802 cooperates with the rotary transmission assembly 10. The cross-sections of the locking block 802 and the annular locking groove 6 are trapezoidal. An annular channel 9 is formed on the periphery of the slot 5. The rotary transmission assembly 10 includes an internal toothed ring 1001 that slides within the annular channel 9 and engages with multiple teeth 7, and a connecting rope 1002 connecting the internal toothed ring 1001 and the multiple locking blocks 802. The connecting rope 1002 is located inside the spring 803.

[0028] When the three-way tube 2 is inserted into the insertion hole 3, the end of the three-way tube 2 first contacts the inclined surface of the locking block 802. As the insertion continues, the inclined surface of the locking block 802 is squeezed by the outer peripheral wall of the three-way tube 2, overcoming the elastic force of the spring 803 and contracting into the placement groove 801. When the annular groove 6 on the three-way tube 2 moves to the position corresponding to the locking block 802, the locking block 802 quickly pops out and locks into the annular groove 6 under the action of the return elastic force of the spring 803. At this time, one side of the trapezoidal cross section of the locking block 802 and one side of the trapezoidal cross section of the annular groove 6 fit and abut against each other, forming a stable locking structure, thereby reliably fixing the three-way tube 2 in the insertion hole 3 of the operating handle 1, effectively preventing the three-way tube 2 from loosening axially or circumferentially during the operation. When the operation is over and the three-way tube 2 needs to be removed, the operator only needs to hold the three-way tube 2 and rotate it, and the multiple teeth 7 on the periphery of the end of the three-way tube 2 will engage with the locking block 802. The teeth on the inner side of the internal gear ring 1001 mesh, causing the internal gear ring 1001 to rotate synchronously within the annular groove 9. Since one end of the connecting rope 1002 is connected to the internal gear ring 1001 and the other end is connected to the locking block 802, and the connecting rope 1002 passes through the inner side of the spring 803, the rotation of the internal gear ring 1001 will generate a pulling force on the connecting rope 1002, causing the connecting rope 1002 to pull the locking block 802 to overcome the elastic force of the spring 803 and retract back into the placement groove 801, thereby releasing the locking state between the locking block 802 and the annular locking groove 6. At this time, the operator can easily pull the three-way tube 2 out of the insertion hole 3. The entire disassembly process is simple and quick, without the need for additional tools, which greatly improves the efficiency of postoperative treatment. In addition, the bearing 11 installed on the inner side of the annular groove 9 can effectively reduce the frictional resistance of the internal gear ring 1001 during rotation, ensuring the smoothness and stability of the rotary transmission and extending the service life of the device.

[0029] like Figure 4 As shown, in this embodiment, a bearing 11 is installed inside the annular channel 9, and an internal gear ring 1001 is disposed inside the bearing 11.

[0030] The outer ring of the bearing 11 is fixedly connected to the inner wall of the annular groove 9, while its inner ring is fixedly connected to the outer peripheral wall of the internal gear ring 1001. This design allows the internal gear ring 1001 to rotate flexibly and stably relative to the annular groove 9 with the bearing 11 as the intermediary. The introduction of the bearing 11 not only significantly reduces the coefficient of friction of the internal gear ring 1001 during rotation, but also reduces the wear and heat generated during rotation, thereby ensuring the smoothness and reliability of the internal gear ring 1001 during long-term use.

[0031] This invention is not limited to the embodiments described above. Anyone should understand that structural changes made under the guidance of this invention, and any technical solutions that are the same as or similar to this invention, fall within the protection scope of this invention. Technical aspects, shapes, and structures not described in detail in this invention are all publicly known technologies.

Claims

1. An adjustable laser fiber optic guided device for ureteroscopic lithotripsy, characterized in that, include: An operating handle (1) is connected to a flexible endoscope tube (4) below the operating handle (1). An insertion hole (3) communicating with the flexible endoscope tube (4) is opened on the upper side of the operating handle (1). A slot (5) is opened in the insertion hole (3). Multiple elastic clips (8) are provided on the outer periphery of the slot (5). A rotary transmission assembly (10) connected to the multiple elastic clips (8) is provided on one side of the slot (5). The three-way pipe (2) has an operation interface (14) on its upper side. The three-way pipe (2) has multiple teeth (7) that are connected to the rotary transmission assembly (10) on its periphery. The second conduit (2) has an annular groove (6) that engages with multiple elastic clips (8) on its periphery. Laser fiber body (12), the laser fiber body (12) is located inside the flexible lens tube (4) through the three-way tube (2); The operation interface (14) is connected to a plurality of elastic clips (15) corresponding to the laser fiber body (12) on its inner side, and the operation interface (14) is connected to a compression shrinking member (16) corresponding to the plurality of elastic clips (15) on its outer side.

2. The adjustable laser fiber optic guided device for ureteroscopic lithotripsy according to claim 1, characterized in that, The compression shrinking component (16) includes a rotating cylinder (1601) threaded to the outside of the operating interface (14) and a compression limiting ring (1602) fixedly connected to the upper side of the rotating cylinder (1601) and abutting against the plurality of elastic clips (15).

3. The adjustable laser fiber optic guided device for ureteroscopic lithotripsy according to claim 2, characterized in that, The elastic clamp (15) includes a connecting part fixedly connected to the inside of the operation interface (14) and an elastic clamping part extending from the connecting part toward the central axis of the operation interface (14). The inner side of the end of the elastic clamping part away from the connecting part is provided with an arc-shaped clamping surface, and the outer wall of the elastic clamping part is an inclined surface that cooperates with the inner wall of the compression limiting ring (1602).

4. The adjustable laser fiber optic guided device for ureteroscopic lithotripsy according to claim 3, characterized in that, A rubber pad is provided on one side of the arc-shaped clamping surface.

5. The adjustable laser fiber optic guided device for ureteroscopic lithotripsy according to claim 1, characterized in that, The middle part of the three-way pipe (2) is connected to a water injection connector (13).

6. The adjustable laser fiber optic guided device for ureteroscopic lithotripsy according to claim 1, characterized in that, The elastic locking member (8) includes a placement groove (801) formed around the slot (5), a locking block (802) located in the placement groove (801) and engaging with the annular locking groove (6), and a spring (803) disposed between the locking block (802) and the placement groove (801). The locking block (802) cooperates with the rotary transmission assembly (10).

7. The adjustable laser fiber optic guidance device for ureteroscopic lithotripsy according to claim 2, characterized in that, The cross-sections of the card block (802) and the annular card slot (6) are trapezoidal.

8. The adjustable laser fiber optic guidance device for ureteroscopic lithotripsy according to claim 2, characterized in that, The slot (5) has an annular groove (9) on its periphery. The rotary transmission assembly (10) includes an internal toothed ring (1001) that slides inside the annular groove (9) and meshes with a plurality of teeth (7), and a connecting rope (1002) connecting the internal toothed ring (1001) and a plurality of locking blocks (802).

9. The adjustable laser fiber optic guided device for ureteroscopic lithotripsy according to claim 4, characterized in that, The connecting rope (1002) is located inside the spring (803).

10. The adjustable laser fiber optic guidance device for ureteroscopic lithotripsy according to claim 1, characterized in that, The annular channel (9) is equipped with a bearing (11) on its inner side, and the internal gear ring (1001) is located on the inner side of the bearing (11).

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