Four-way connector and endoscope using same

Abstract

The utility model relates to a four-way connector and an endoscope using the same, and belongs to the technical field of medical equipment. The four-way connector comprises a side hole, a straight hole, a partition plate, rolling wheels, magnets, Hall sensors and a controller, the side hole is perpendicularly formed in the straight hole, the partition plate is arranged in the middle of the upper portion of the straight hole, the rolling wheels are arranged on the inner walls of the straight hole on the two sides of the partition plate through rotating shafts, the magnets are arranged on the outer sides of the rolling wheels, and the Hall sensors corresponding to the magnets are arranged on the straight hole. The Hall sensor is connected with a controller, and the controller is arranged on the outer side of the straight hole. The laser optical fiber and the calculus removing net basket can be inserted simultaneously, the laser optical fiber and the calculus removing net basket do not need to be replaced alternately in the treatment process, the treatment process is accelerated, the insertion depth of the laser optical fiber and the calculus removing net basket can be effectively monitored, and operation is convenient.

Description

Technical Field

[0001] This utility model relates to a four-way connector and an endoscope using the connector, belonging to the field of medical equipment technology. Background Technology

[0002] With the continuous development of endoscopic technology, the treatment of urinary tract stones now mostly adopts minimally invasive methods, using endoscopes as the equipment. For example, Chinese patent document CN219397460U discloses a basket support device and endoscope for single-handed endoscopic stone removal. During treatment, a three-way connector is placed on the handle of the endoscope. Figure 3 As shown, water is injected into one side, and a laser fiber is inserted into the other side for laser lithotripsy. After lithotripsy, the laser fiber is removed, a stone retrieval basket is inserted, and the remaining stones are removed. The existing three-way connector includes a straight hole and a side hole. A side hole is vertically set on one side of the straight hole. One end of the straight hole is connected to the handle, and the side hole is connected to the water pipe for water injection. The laser fiber and the stone retrieval basket are used alternately in the other end of the straight hole. The operation is complicated. Moreover, there is no effective means to monitor the insertion depth of the laser fiber and the stone retrieval basket. It can only be judged by the display whether the treatment position has been reached. Therefore, this utility model is proposed. Utility Model Content

[0003] To address the shortcomings of existing technologies, this invention provides a four-way connector and an endoscope using the connector, which can simultaneously insert a laser fiber and a stone retrieval basket. During treatment, there is no need to alternately replace the laser fiber and the stone retrieval basket, thus accelerating the treatment process. Furthermore, it can effectively monitor the insertion depth of the laser fiber and the stone retrieval basket, making operation convenient.

[0004] A four-way connector includes a side hole, a straight hole, a partition, rollers, a magnet, a Hall sensor, and a controller. The straight hole has a side hole vertically arranged on it. A partition is arranged at the middle of the upper part of the straight hole. Rollers are arranged on the inner walls of the straight holes on both sides of the partition via rotating shafts. Magnets are arranged on the outer side of the rollers. Hall sensors corresponding to the magnets are arranged on the straight holes. The Hall sensors are connected to the controller, which is located on the outer side of the straight holes.

[0005] According to a preferred embodiment of this utility model, the gap width between the partition and the roller is the diameter of the laser fiber or the diameter of the stone retrieval basket. Specifically, the two rollers are respectively equipped with the laser fiber and the stone retrieval basket. The laser fiber and the stone retrieval basket are different colors. In application, the two rollers can be set to the corresponding colors for easy identification. The gaps between the two rollers and the partition correspond to the diameters of the laser fiber and the stone retrieval basket, respectively.

[0006] According to a preferred embodiment of this invention, indicator lights are respectively provided on the straight holes on the outer sides of the two rollers. The indicator lights are connected to a controller. Hall sensors detect the number of rotations of the rollers to obtain the forward distance of the wire harness. In use, the distance between the front end of the catheter and the tee connector is set as a threshold distance. After the wire harness advances to the threshold distance, the indicator light turns green, indicating that the wire harness has reached the working area. It can continue to extend forward to go beyond the catheter and enter the human body for work. The indicator lights are used to remind medical staff and improve insertion efficiency.

[0007] A four-way connector includes a straight hole, a side hole, and an oblique hole. The straight hole has a side hole vertically arranged on one side and an oblique hole inclined on the other side. The two ends of the straight hole, the side hole, and the oblique hole respectively constitute four connectors.

[0008] A further preferred embodiment of this invention is that the angle between the oblique hole and the straight hole is less than 45°, to avoid bending of the laser fiber and the stone retrieval basket.

[0009] An endoscope using a four-way connector includes a handle, a four-way connector, a laser fiber, and a stone retrieval basket. The handle is provided with a four-way connector, into which a water pipe, a laser fiber, and a stone retrieval basket are respectively inserted. The laser fiber and the stone retrieval basket are both located inside the guide tube of the handle.

[0010] According to a further preferred embodiment of this utility model, the inner radius of the existing conduit is R1, the radius of the laser fiber is r1, and the radius of the stone retrieval basket is r2. The water injection flow rate is determined by subtracting the cross-sectional area of ​​the laser fiber or the cross-sectional area of ​​the stone retrieval basket from the inner cross-sectional area of ​​the conduit. Since the radius of the laser fiber is smaller than the radius of the stone retrieval basket, when the laser fiber and the stone retrieval basket are used alternately, the minimum water injection flow rate is the flow rate of the remaining channel after dividing the inner cross-sectional area of ​​the conduit by the cross-sectional area of ​​the stone retrieval basket. To meet the minimum water injection flow rate in the conduit, the inner cross-sectional area S of the conduit is set as follows:

[0011] S=πR1 2 +πr1 2

[0012] The minimum required inner radius R2 of the catheter is obtained based on the cross-sectional area S of the catheter.

[0013] When using it, first install the water pipe, laser fiber, and stone retrieval basket into the designated position. Then, extend the laser fiber forward to perform laser lithotripsy. After the operation is completed, retract the laser fiber and extend the stone retrieval basket forward to remove the remaining stones. The treatment process does not require replacement of the laser fiber and stone retrieval basket, making it easy to operate.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention allows for the simultaneous insertion of a laser fiber and a stone retrieval basket, eliminating the need to alternate between them during treatment, thus accelerating the treatment process. Furthermore, it effectively monitors the insertion depth of both the laser fiber and the stone retrieval basket, making operation convenient. Attached Figure Description

[0016] Figure 1 This is a side view of Embodiment 1 of the present invention.

[0017] Figure 2 This is a top view schematic diagram of the straight hole structure of this utility model;

[0018] Figure 3 This is a side view of Embodiment 2 of the present invention.

[0019] Figure 4 This is a schematic diagram of the inner diameter cross-section of the conduit of this utility model;

[0020] Figure 5 This is a partial structural diagram of an existing endoscope;

[0021] Figure 6 This is a color-coded schematic diagram of Embodiment 3 of this utility model.

[0022] The components include: 1. Side hole; 2. Straight hole; 3. Partition plate; 4. Roller; 5. Shaft; 6. Magnet; 7. Hall sensor; 8. Indicator light; 9. Handle; 10. Conduit; 11. T-connector; 12. Color marking; 13. Angled hole. Detailed Implementation

[0023] The present invention will be further described below with reference to the embodiments and accompanying drawings, but is not limited thereto. Example 1:

[0024] This embodiment provides a four-way connector, including a side hole 1, a straight hole 2, a partition 3, a roller 4, a magnet 6, a Hall sensor 7, and a controller. The side hole 1 is vertically arranged on the straight hole 2, and the partition 3 is arranged at the middle of the upper part of the straight hole 2. The roller 4 is arranged on the inner wall of the straight hole on both sides of the partition 3 through a rotating shaft 5. The magnet 6 is arranged on the outer side of the roller 4. The Hall sensor 7 corresponding to the magnet 6 is arranged on the straight hole 2. The Hall sensor 7 is connected to the controller, and the controller is arranged on the outer side of the straight hole.

[0025] The gap width between the partition 3 and the roller 4 is the diameter of the laser fiber or the diameter of the stone retrieval basket. Specifically, the two rollers are respectively set with the laser fiber and the stone retrieval basket. The laser fiber and the stone retrieval basket are different colors. In application, the two rollers can be set with the corresponding colors for easy identification. The gaps between the two rollers and the partition are respectively the diameter of the laser fiber and the diameter of the stone retrieval basket.

[0026] Indicator lights 8 are installed on the straight holes on the outer sides of the two rollers 4. The indicator lights 8 are connected to the controller. The Hall sensor detects the number of rotations of the rollers and thus obtains the forward distance of the wire harness. In use, the distance between the front end of the catheter and the tee connector is set as the threshold distance. After the wire harness advances to the threshold distance, the indicator light turns green, indicating that the wire harness has reached the working area. It can continue to extend forward to go beyond the catheter and enter the human body for work. The indicator lights remind medical staff, and the wire harness can be inserted with confidence in the early stage, which improves the insertion efficiency. Example 2:

[0027] This embodiment provides a four-way connector, including a straight hole, a side hole, and an oblique hole 13. The side hole is vertically arranged on one side of the straight hole, and the oblique hole is inclined on the other side. The two ends of the straight hole, the side hole, and the oblique hole respectively constitute four connectors.

[0028] The angle α between the oblique hole and the straight hole is less than 45° to avoid bending of the laser fiber and the stone retrieval basket. Example 3:

[0029] An endoscope with a four-way connector as described in Application Embodiment 2 includes a handle 9, a four-way connector, a laser fiber, and a stone retrieval basket. The handle 9 is provided with a four-way connector, into which a water pipe, a laser fiber, and a stone retrieval basket are respectively inserted. The laser fiber and the stone retrieval basket are both located inside the guide tube 10 of the handle. The rest of the endoscope structure is unchanged, except that the ordinary three-way connector is replaced with a four-way connector.

[0030] The laser fiber and the stone retrieval basket have two color-coded markings at the rear, such as 12. Figure 6 As shown, the two colored markings are different colors, such as red and green. The first colored marking corresponds to the wire harness reaching the work area, and the second colored marking corresponds to the wire harness extending out of the conduit and entering the human body. The two colored markings indicate to the operator that the wire harness has a certain control over its forward distance.

[0031] The color markings in this application are not limited to laser fibers and stone retrieval baskets, but can be extended to use in medical devices such as guide wires.

[0032] Given a conduit with an inner radius of R1, a laser fiber radius of r1, and a stone retrieval basket radius of r2, the water injection flow rate is determined by subtracting the cross-sectional area of ​​the laser fiber or the stone retrieval basket from the conduit's inner cross-sectional area. Since the laser fiber radius is smaller than the stone retrieval basket radius, when the laser fiber and stone retrieval basket are used alternately, the minimum water injection flow rate is the flow rate remaining in the channel after dividing the conduit's inner cross-sectional area by the stone retrieval basket's cross-sectional area. To meet the minimum water injection flow rate in the conduit, the conduit's inner cross-sectional area S is set as follows:

[0033] S=πR1 2 +πr1 2

[0034] The minimum required inner radius R2 of the catheter is obtained based on the cross-sectional area S of the catheter.

[0035] For example, the existing catheter inner diameter is basically 3.6 Fr (1.188 mm), the laser fiber diameter is 0.272 mm, and the stone retrieval basket diameter is 1.7 Fr (approximately 0.561 mm). The inner cross-sectional area S of the catheter is obtained. From S, the minimum required inner radius of the catheter is R2≈0.6093 mm. The minimum inner diameter of the catheter is 1.2187 mm (3.69 Fr), which can meet the requirements.

[0036] When using it, first install the water pipe, laser fiber, and stone retrieval basket into the designated position. Then, extend the laser fiber forward to perform laser lithotripsy. After the operation is completed, retract the laser fiber and extend the stone retrieval basket forward to remove the remaining stones. The treatment process does not require replacement of the laser fiber and stone retrieval basket, making it easy to operate.

[0037] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A four-way junction, characterized in that It includes side holes, straight holes, partitions, rollers, magnets, Hall sensors, and controllers. The straight holes are vertically arranged with side holes. A partition is arranged at the middle of the upper part of the straight holes. Rollers are arranged on the inner walls of the straight holes on both sides of the partition via rotating shafts. Magnets are arranged on the outer side of the rollers. Hall sensors corresponding to the magnets are arranged on the straight holes. The Hall sensors are connected to the controller, which is located on the outer side of the straight holes.

2. The four-way junction of claim 1, wherein, The gap width between the partition and the roller is the diameter of the laser fiber or the diameter of the stone retrieval basket.

3. The four-way junction of claim 2, wherein, Indicator lights are installed on the straight holes on the outer sides of the two rollers, and the indicator lights are connected to the controller.

4. A four-way junction, characterized in that It includes straight holes, side holes, and oblique holes. A straight hole has a side hole vertically arranged on one side and an oblique hole inclined on the other side.

5. The four-way junction of claim 4, wherein, The angle between the inclined hole and the straight hole is less than 45°.

6. An endoscope comprising the four-way junction of any one of claims 1-5, characterized in that, It also includes a handle, a laser fiber, and a stone retrieval basket. The handle is equipped with a four-way connector, into which a water pipe, a laser fiber, and a stone retrieval basket are inserted respectively. The laser fiber and the stone retrieval basket are both located inside the conduit of the handle.

7. An endoscope as claimed in claim 6, characterized in that Given a conduit with an inner radius of R1, a laser fiber radius of r1, and a stone retrieval basket radius of r2, the water injection flow rate is determined by subtracting the cross-sectional area of ​​the laser fiber or the stone retrieval basket from the conduit's inner cross-sectional area. Since the laser fiber radius is smaller than the stone retrieval basket radius, when the laser fiber and stone retrieval basket are used alternately, the minimum water injection flow rate is the flow rate remaining in the channel after dividing the conduit's inner cross-sectional area by the stone retrieval basket's cross-sectional area. To meet the minimum water injection flow rate in the conduit, the conduit's inner cross-sectional area S is set as follows: S = πR1 2 + πr1 2 The minimum required inner radius R2 of the catheter is obtained based on the cross-sectional area S of the catheter.

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