Disposable ureteral guide sheath with pressure measurement and water injection function

Abstract

The utility model discloses a disposable ureter guide sheath with pressure measurement and water injection function, including the sheath body of cavity, the front end of sheath body is equipped with the sheath pipe of away from sheath body forward extension, one side of sheath body is equipped with the lateral extension negative pressure connecting pipe, the other side of sheath body away from negative pressure connecting pipe is equipped with the lateral extension A luer male joint, be equipped with a second passageway of through sheath pipe in sheath pipe, the front end of second passageway sets up on the head end lateral wall of sheath pipe, the rear end of second passageway extends and sets up in A luer male joint after passing through sheath body cavity, be equipped with the tee joint on A luer male joint, be equipped with the luer female joint, water injection joint, pressure measurement joint of separate arrangement on tee joint, the luer female joint on tee joint connects A luer male joint. The utility model sets up second passageway in sheath pipe and realizes double passageway sheath structure, realizes pressure measurement and flushing random switching through tee joint, realizes the continuity of operation, speeds up operation process.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to a disposable ureteral guide sheath with pressure measurement and water injection functions, used to establish an instrument channel between the urethra, bladder, ureter, and renal pelvis. Background Technology

[0002] Ureteral guiding sheaths are primarily used clinically in urological surgeries to establish a channel for endoscopes and other instruments to enter the urinary tract. Surgeons locate stones using a flexible endoscope, break them up with a holmium laser, and then remove the fragments using negative pressure suction. If the stones are simply broken up and allowed to pass naturally, the risk of recurrence after several years increases. Currently, in urological surgeries using negative pressure suction for stone fragmentation, traditional ureteral guiding sheaths only provide a single instrument channel. The pressure index cannot be displayed visually, and supplemental fluid cannot be added. This fails to meet the demands of modern surgery for real-time pressure monitoring and continuous fluid administration, requiring the replacement of tubing for fluid administration or pressure measurement. This reduces surgical efficiency and increases the difficulty and time required for the procedure. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a disposable ureteral guide sheath with pressure measurement and water injection functions. The negative pressure index is displayed intuitively, and water can be added to increase the water in the renal pelvis. The negative pressure is easy to control, thus improving surgical efficiency and safety.

[0004] To achieve the above objectives, the present invention adopts the following technical solution:

[0005] A disposable ureteral guide sheath with pressure measurement and water injection functions includes a hollow sheath body, a sheath tube extending forward away from the sheath body at the front end of the sheath body, a laterally extending negative pressure connector on one side of the sheath body, and a laterally extending A-Luer male connector on the other side of the sheath body away from the negative pressure connector. A second channel penetrating the sheath tube is provided inside the sheath tube, the front end of the second channel is located on the head end side wall of the sheath tube, and the rear end of the second channel extends through the sheath body cavity and is located in the A-Luer male connector.

[0006] The A-type Luer male connector is equipped with a tee connector, and the tee connector is equipped with a separately arranged Luer female connector, a water injection connector, and a pressure testing connector. The Luer female connector on the tee connector is connected to the A-type Luer male connector.

[0007] The tee connector is equipped with a switch handle that controls the connection between the Luer female connector, the water injection connector, and the pressure test connector.

[0008] Furthermore, in some embodiments, the angle between the negative pressure connector and the sheath is an obtuse angle, and the angle between the A-type Luer male connector and the sheath is an obtuse angle.

[0009] Furthermore, in some embodiments, the water injection connector and pressure testing connector are designed as Luer male connectors.

[0010] Furthermore, in some embodiments, the tee connector is provided with a switch handle for controlling the connection between the Luer female connector and the water injection connector;

[0011] The tee connector is equipped with a switch handle that controls the connection between the Luer female connector and the pressure test connector.

[0012] This invention establishes a dual-channel sheath structure by installing a second channel within the sheath. A three-way connector is installed on the A-type Luer male connector, allowing for easy switching between pressure measurement and flushing (water spraying). The Luer female connector on the three-way connector connects to the A-type Luer male connector on the sheath body. A switch handle controls single-path operation, enabling both water spraying and pressure measurement functions without the need for repeated tube disconnection and reconnection, thus maintaining surgical continuity and accelerating the surgical process.

[0013] The pressure test connector (pressure test interface) connects to the pressure test line of the pressure test equipment, which can monitor the pressure in the renal pelvis in real time during flexible endoscopic lithotripsy. Doctors can adjust the surgical method according to the monitored pressure level, so that the surgery can be performed safely.

[0014] The water inlet connector (water inlet interface) connects to the water inlet tube, increasing the water level in the renal pelvis. There is also a separate channel (second channel) specifically for injecting water into the renal pelvis during negative pressure stone suction. This eliminates the risk of creating a vacuum by flattening the renal pelvis during stone suction (negative pressure connector), allowing for rapid stone removal. This invention combines real-time pressure monitoring and water inlet functions, improving surgical safety and efficiency while simplifying intraoperative procedures. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the sheath portion in an embodiment of this application;

[0016] Figure 2 This is a perspective view of an embodiment of this application;

[0017] Figure 3 This is a schematic diagram of the three-way water injection function in an embodiment of this application;

[0018] Figure 4 This is a schematic diagram of the three-way pressure measurement function in an embodiment of this application.

[0019] Explanation of reference numerals in the attached figures:

[0020] 11. Sheath body, 12. Second channel, 13. Negative pressure connection pipe, 14. A Luer male connector, 15. T-connector, 21. Luer female connector, 22. Switch handle, 23. Water injection connector, 24. Pressure test connector, 25. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0022] In the description of this utility model, it should be noted that the terms "lateral," "upper," "lower," "front," "rear," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used solely for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly defined.

[0023] Referring to the attached figures, this application includes: a hollow sheath 11, with a sheath tube 12 extending forward away from the sheath 11 at its front end; a laterally extending negative pressure connector 14 on one side of the sheath 11, the angle between the negative pressure connector 14 and the sheath tube 12 being an obtuse angle; and a laterally extending A-Luer connector 15 on the other side of the sheath 11 away from the negative pressure connector 14, the angle between the A-Luer connector 15 and the sheath tube 12 being an obtuse angle. The sheath tube 12 extends forward away from the sheath 11, while the negative pressure connector 14 and the A-Luer connector 15 extend from both sides of the sheath 11, forming an obtuse angle with the sheath tube 12, which facilitates space utilization during surgery.

[0024] Furthermore, in one embodiment, a second channel 13 (inner channel tube) is provided inside the sheath tube 12, the front end (opening) of the second channel 13 (inner channel tube) is provided on the head end (front end) side wall of the sheath tube 12, and the rear end of the second channel 13 (inner channel tube) extends into the A-luer male connector 15 after passing through the cavity of the sheath body 11.

[0025] The Luer male connector 15 is equipped with a tee connector 21, and the tee connector 21 is equipped with a separately arranged Luer female connector 22, water injection connector 24, and pressure test connector 25. The tee connector 21 is equipped with a switch handle 23 that controls the conduction between the Luer female connector 22, water injection connector 24, and pressure test connector 25.

[0026] The tee connector 21 is equipped with a switch handle 23 that controls the connection between the Luer female connector 22 and the water inlet connector 24. When the switch handle 23 opens the channel between the Luer female connector 22 and the water inlet connector 24, see Appendix. Figure 3 As shown, water enters through the water inlet connector 24. The tee connector 21 is equipped with a switch handle 23 that controls the connection between the Luer female connector 22 and the pressure test connector 25. When the switch handle 23 opens the channel between the Luer female connector 22 and the pressure test connector 25, see attached... Figure 4 As shown, the pressure testing connector 25 connects the pressure testing line. The switch handle 23 controls the flow of the channel on the three-way connector 21, allowing for easy switching between pressure testing and water injection functions without the need for repeated tube disconnection and reconnection, ensuring surgical continuity and accelerating the surgical process.

[0027] Water inlet connector 24 is also a water inlet (B Luer male connector), and pressure test connector 25 is also a pressure test connector (C Luer male connector).

[0028] See Figure 3 As shown, when the switch handle 23 controls the water injection connector 24 (water injection interface) to conduct with the Luer female connector 22, the pressure testing connector 25 (C Luer male connector) is closed. The water injection from the water injection connector 24 is connected to the Luer female connector 22 after being controlled by the switch handle 23. The water injection connector 24 (B Luer male connector) injects water into the renal pelvis through the second channel 13 (inner channel tube), increasing the water volume in the renal pelvis.

[0029] See attached Figure 4 As shown, when the switch handle 23 controls the pressure measuring connector 25 (pressure measuring interface) to conduct with the Luer female connector 22, the water injection connector 24 (B Luer male connector) is closed. The Luer female connector 22 obtains the pressure in the renal pelvis through the second channel 13 (inner channel tube). After being controlled by the switch handle 23, the Luer female connector 22 is connected to the pressure measuring device through the pressure measuring connector 25 (C Luer male connector) to realize real-time monitoring of the pressure in the renal pelvis during the operation.

[0030] This invention features a three-way connector 21 on the A-type Luer male connector 15, allowing for easy switching between pressure measurement and flushing (water injection). This enhances safety by providing real-time monitoring of renal pelvis pressure, reducing surgical risks; improves efficiency by ensuring continuous water injection avoids renal pelvis vacuum issues, minimizing surgical interruptions; and simplifies operation by eliminating the need for frequent tubing changes, ensuring surgical continuity.

[0031] A second channel 13 is installed in the sheath 12 to achieve a dual-channel sheath structure. A tee connector 21 is added to the A-type Luer male connector 15. The Luer female connector 22 on the tee connector 21 is connected to the A-type Luer male connector 15 on the sheath body 11. Single-channel conduction is controlled by the switch handle 25, realizing the dual functions of water injection and pressure measurement. It eliminates the need for repeated tube disconnection and reconnection, ensuring the continuity of surgery and speeding up the surgical process. The water injection connector 24 (water injection interface) and the pressure measurement connector 25 (pressure measurement interface) are designed as standard Luer connectors.

[0032] Pressure measuring connector 25 (pressure measuring interface): The pressure measuring line of the pressure measuring device is connected to the pressure measuring connector 25. During flexible endoscopic lithotripsy, the pressure in the renal pelvis can be monitored in real time. Doctors can adjust the surgical method according to the monitored pressure to ensure safe surgery.

[0033] Water inlet connector 24 (water inlet interface): Connecting the water inlet tube to this channel (water inlet connector 24) increases the water content in the renal pelvis, allowing the negative pressure connector 14 to quickly extract the stones during suction. Because the renal pelvis is closed, another channel (second channel 13) can specifically inject water into the renal pelvis during negative pressure stone suction. Therefore, during negative pressure stone suction (negative pressure connector 14), there is no need to worry about the renal pelvis becoming flattened and creating a vacuum. Because when a vacuum is created after the renal pelvis is flattened during negative pressure stone suction, the suction must be stopped, and water must be injected using a mirror to fill the renal pelvis before negative pressure stone suction can resume, significantly slowing down the process.

[0034] The above detailed description includes references to the accompanying drawings, which form part of the detailed description. The drawings illustrate, by way of illustration, specific embodiments that can implement the present invention. These embodiments are also referred to herein as "examples". These examples may include other elements besides those shown and described. The inventors also anticipate examples using any combination or arrangement of the shown or described elements, either with respect to a particular example (or one or more aspects thereof) or with respect to other examples shown or described herein (or one or more aspects thereof).

Claims

1. A disposable ureteral guiding sheath with pressure measurement and water injection functions, including: The hollow sheath (11) has a sheath tube (12) extending forward away from the sheath (11) at the front end, and a negative pressure pipe (14) extending laterally on one side of the sheath (11). The feature is that the sheath (11) is provided with a laterally extending A-Luer male connector (15) on the other side away from the negative pressure pipe (14), and a second channel (13) is provided inside the sheath tube (12), the front end of the second channel (13) is provided on the head end side wall of the sheath tube (12), and the rear end of the second channel (13) extends into the A-Luer male connector (15) after passing through the cavity of the sheath (11); The A Luer male connector (15) is provided with a tee connector (21), and the tee connector (21) is provided with a separately arranged Luer female connector (22), a water injection connector (24), and a pressure testing connector (25). The Luer female connector (22) on the tee connector (21) is connected to the A Luer male connector (15). The tee connector (21) is equipped with a switch handle (23) that controls the connection between the Luer female connector (22), the water injection connector (24), and the pressure test connector (25).

2. The disposable ureteral guide sheath with pressure measurement and water injection functions according to claim 1, characterized in that, The angle between the negative pressure connector (14) and the sheath (12) is an obtuse angle; the angle between the A-type Luer male connector (15) and the sheath (12) is an obtuse angle.

3. The disposable ureteral guide sheath with pressure measurement and water injection functions according to claim 1, characterized in that, The water injection connector (24) and pressure testing connector (25) are designed as Luer male connectors.

4. The disposable ureteral guide sheath with pressure measurement and water injection functions according to claim 1, characterized in that, The tee connector (21) is equipped with a switch handle (23) for controlling the connection between the Luer female connector (22) and the water injection connector (24); The tee connector (21) is equipped with a switch handle (23) that controls the connection between the Luer female connector (22) and the pressure test connector (25).

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