Ureteral sheath

Abstract

The utility model provides a kind of ureteral sheath, belong to medical supplies technical field.It solves the higher production cost of current ureteral sheath and the problem of poor practicality.The ureteral sheath, including sheath main part and with the drainage part of sheath main part one end connection, sheath main part is integrally formed with the valve of arc, the inner side wall between valve and the outer side wall of sheath main part forms water inlet passage, the one end of sheath main part close to drainage part is connected with the water inlet pipe of water inlet passage intercommunication, the valve on the one end of sheath main part close to water inlet pipe is formed with the mounting portion of protruding, pressure sensor is screw-threaded connected on mounting portion, and mounting portion is communicated with the inner chamber of water inlet passage.The ureteral sheath satisfies reducing production cost while improving the practicality of ureteral sheath.

Description

Technical Field

[0001] This utility model belongs to the field of medical supplies technology and relates to a ureter sheath. Background Technology

[0002] Ureteral sheaths are used in urological surgeries. Before any urological surgery, a ureteral sheath must be inserted into the ureter. A flexible ureteroscope is then inserted into the ureteral sheath to reach the upper ureter or renal pelvis for the surgical procedure. During the procedure, fluid is continuously infused into the surgical field through the flexible ureteroscope, while the fluid in the surgical field is continuously drained out of the body through the ureteral sheath to maintain a clear surgical field.

[0003] For example, Chinese patent application [Authorization Announcement No.: CN216777176U] discloses a flexible-headed, renal pressure-measuring negative pressure ureteral sheath. The ureteral sheath includes a sheath and a drain. The sheath includes an anterior section and a posterior section. The posterior section is a rigid tube, and the anterior section is a flexible tube. The flexible tube can bend and turn with the instrument inserted into the ureteral sheath. At least one mounting position for installing a medical fiber optic pressure sensor is provided on the outer surface of the end of the flexible tube. The medical fiber optic pressure sensor is fixedly installed on the mounting position and connected to the main control unit through a signal feedback line.

[0004] The above structure uses a medical fiber optic pressure sensor at the end of the flexible tube to detect pressure. Due to the small size of the entire sheath, the installation of the pressure sensor is inconvenient. Furthermore, the flexible tube needs to be inserted into the human body during use, which requires a larger pressure sensor, increasing the production cost of the entire ureteral sheath. During surgery, the surgical site often needs to be rinsed. As an instrument for minimally invasive surgery, the ureteral sheath cannot directly clean the surgical site, requiring a separate cleaning channel, which causes inconvenience during surgery. Utility Model Content

[0005] The purpose of this invention is to address the aforementioned problems in existing technologies by proposing a ureteral sheath. The technical problem this invention aims to solve is: how to address the high production cost and poor practicality of existing ureteral sheaths.

[0006] The objective of this utility model can be achieved through the following technical solutions:

[0007] A ureteral sheath includes a sheath body and a drainage portion connected to one end of the sheath body. The sheath body has an integrally formed arc-shaped valve, with an inlet channel formed between the inner wall of the valve and the outer wall of the sheath body. An inlet pipe communicating with the inlet channel is connected to one end of the sheath body near the drainage portion. A mounting portion is formed by a protrusion on the valve at the end of the sheath body near the inlet pipe, and a pressure sensor is threaded onto the mounting portion. The mounting portion communicates with the inner cavity of the inlet channel.

[0008] By integrally molding an arc-shaped valve onto the sheath body, a water inlet channel is formed between the valve and the sheath body without affecting the overall size of the sheath body. An inlet pipe is also integrally molded onto the sheath body. When flushing is required, external water flows into the inlet channel through the inlet pipe, realizing the flushing function of the sheath body. To ensure appropriate water pressure during flushing, a mounting part is formed by protruding on the valve near the inlet pipe end of the sheath body. A pressure sensor is threaded onto the mounting part. After detection, the pressure sensor is connected to an external controller to monitor the water pressure, thereby controlling the flushing water pressure. Furthermore, the part with the mounting part can be located outside the body, extending the length of the entire sheath body. This not only does not affect the operation but also allows the pressure sensor to quickly detect the water pressure in the inlet channel, thus reducing the production cost of the ureteral sheath and improving its practicality.

[0009] For example, the pressure sensor model could be Adafruit Industries LLC3828.

[0010] In the aforementioned ureteral sheath, a mounting cap is threaded onto the mounting portion, and the pressure sensor is fixed to the mounting cap by a spring.

[0011] The mounting cover design allows for faster and more convenient connection of the pressure sensor to the mounting section, and also enables quick removal from the mounting section during prolonged use and maintenance.

[0012] In the aforementioned ureteral sheath, the inner end of the mounting portion has a limiting flange, the pressure sensor can be pressed against the limiting flange, the limiting flange is annular, and the end portion of the pressure sensor is embedded in the inner ring of the limiting flange.

[0013] By setting a limit stop, the travel of the pressure sensor can be stopped, preventing the pressure sensor from abutting against the outer wall of the sheath body under the elastic force of the spring, thus ensuring the normal use of the sheath body.

[0014] In the aforementioned ureteral sheath, the limiting edge has an inclined limiting wall, and the end wall of the pressure sensor has an abutment wall that fits against the limiting wall. When the limiting wall and the abutment wall fit together, there is a clearance gap between the pressure sensor and the outer wall of the sheath body.

[0015] This structure reduces the impact of the pressure sensor on the valve, and after the limiting wall and the abutment wall are in contact, the pressure sensor will not come into contact with the outer wall of the sheath body, providing water passage space, facilitating detection, and improving the stability of the ureteral sheath in use.

[0016] In the aforementioned ureteral sheath, a display screen and a controller are electrically connected to one side of the mounting portion, and the display screen is electrically connected to a pressure sensor via the controller.

[0017] The display screen is designed so that the water pressure detected by the pressure sensor through the controller can be quickly displayed on the screen, making it convenient for doctors to adjust the water pressure.

[0018] In the aforementioned ureteral sheath, the inlet pipe is inclined, and the lower end of the inlet pipe is integrally formed with the sheath body.

[0019] The inclined design of the inlet pipe guides the water flow, helping it to quickly flow into the inlet channel for rapid flushing. It also reduces the lateral space of the ureteral sheath, making it easier to store.

[0020] In the aforementioned ureteral sheath, the display screen is disposed on the outer wall of the inlet pipe.

[0021] To save on the length of the sheath body, the display screen can be placed on the outer wall of the inlet pipe, which facilitates the installation and setup of the display screen, reduces the installation requirements of the sheath body, and thus improves the ease of installation.

[0022] Alternatively, the controller can also be installed on the outer wall of the inlet pipe.

[0023] In the aforementioned ureteral sheath, a plurality of sealing rings are provided between the inner wall of the mounting cap and the outer wall of the mounting portion.

[0024] The sealing ring enhances the sealing effect between the mounting cover and the mounting part.

[0025] Compared with the prior art, the present invention has the following advantages: by protruding a mounting part on the water inlet pipe, a pressure sensor is threadedly connected to the mounting part. After detection, the pressure sensor is connected to an external controller to monitor the water pressure, thereby controlling the flushing water pressure, which facilitates the operation. Furthermore, the pressure sensor is set at the water inlet pipe. During the operation, only the sheath body is inserted into the human body, so there is a large space at the water inlet pipe. Therefore, the pressure sensor can be directly set at the water inlet pipe, which can both detect the water pressure and facilitate installation. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of this utility model.

[0027] Figure 2 This is a top view of the present invention.

[0028] Figure 3 yes Figure 2 Partial sectional view of AA.

[0029] Figure 4 yes Figure 3 A magnified view of a portion of point A in the middle.

[0030] Figure 5 This is a cross-sectional view of the sheath body and valve in this utility model.

[0031] In the diagram, 1 is the sheath body; 11 is the valve; 11a is the water inlet channel; 12 is the mounting part; 12a is the limiting stop; 12b is the limiting wall; 2 is the drainage part; 3 is the water inlet pipe; 4 is the pressure sensor; 41 is the abutment wall; 5 is the mounting cover; 6 is the spring; 7 is the display screen; 8 is the controller; 9 is the sealing ring; and 10 is the clearance. Detailed Implementation

[0032] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0033] like Figure 1 As shown, this ureteral sheath includes a sheath body 1 and a drainage portion 2 connected to one end of the sheath body 1.

[0034] Specifically, such as Figure 1-5 As shown, an arc-shaped valve 11 is integrally formed on the sheath body 1. A water inlet channel 11a is formed between the inner sidewall of the valve 11 and the outer sidewall of the sheath body 1. A water inlet pipe 3 that communicates with the water inlet channel 11a is connected to one end of the sheath body 1 near the drainage part 2. A mounting part 12 is formed by protrusion on the valve 11 at the end of the sheath body 1 near the water inlet pipe 3. A pressure sensor 4 is threadedly connected to the mounting part 12. The mounting part 12 communicates with the inner cavity of the water inlet channel 11a.

[0035] An arc-shaped valve 11 is integrally formed on the sheath body 1. Without affecting the overall size of the sheath body 1, a water inlet channel 11a is formed between the valve 11 and the sheath body 1. An inlet pipe 3 is integrally formed on the sheath body 1. When flushing is required, external water can flow into the water inlet channel 11a through the water inlet pipe 3 to realize the flushing function of the sheath body 1. In order to ensure that the water pressure is appropriate during flushing, a mounting part 12 is formed by protruding on the valve 11 near the end of the sheath body 1 near the water inlet pipe 3. A pressure sensor 4 is threaded onto the mounting part 12. After detection, the pressure sensor 4 is connected to an external controller 8 to monitor the water pressure and control the flushing water pressure. Furthermore, the part with the mounting part 12 can be located outside the human body, extending the length of the entire sheath body 1. This does not affect the operation and allows the pressure sensor 4 to quickly detect the water pressure in the water inlet channel 11a, thereby reducing the production cost of the ureteral sheath and improving its practicality.

[0036] For example, pressure sensor model 4 could be Adafruit Industries LLC3828.

[0037] like Figure 2-5 As shown, a mounting cover 5 is threaded onto the mounting part 12. The pressure sensor 4 is fixed to the mounting cover 5 by a spring 6. A limiting flange 12a is provided on the inner end of the mounting part 12. The pressure sensor 4 can press on the limiting flange 12a. The limiting flange 12a is annular. The end part of the pressure sensor 4 is embedded in the inner ring of the limiting flange 12a. The limiting flange 12a has an inclined limiting wall 12b. The end wall of the pressure sensor 4 has an abutment wall 41 that fits against the limiting wall 12b. When the limiting wall 12b and the abutment wall 41 fit together, there is a clearance gap 10 between the pressure sensor 4 and the outer wall of the sheath body 1.

[0038] like Figure 2-4 As shown, a display screen 7 and a controller 8 are electrically connected to one side of the mounting part 12. The display screen 7 is electrically connected to the pressure sensor 4 through the controller 8. The water inlet pipe 3 is inclined and the lower end of the water inlet pipe 3 is integrally formed with the pipe sheath body 1. The display screen 7 is set on the outer wall of the water inlet pipe 3. Multiple sealing rings 9 are provided between the inner wall of the mounting cover 5 and the outer wall of the mounting part 12.

[0039] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A ureteral sheath comprising a tube sheath body (1) and a drainage portion (2) connected to one end of the tube sheath body (1), characterized in that, The valve (11) is integrally formed on the sheath body (1) and has an arc shape, an inner side wall of the valve (11) and an outer side wall of the sheath body (1) form a water inlet channel (11a), the sheath body (1) is connected with a water inlet pipe (3) in communication with the water inlet channel (11a) near one end of the drainage part (2), the valve (11) near one end of the water inlet pipe (3) is protruded to form a mounting part (12), the mounting part (12) is threadedly connected with a pressure sensor (4), and the mounting part (12) is in communication with an inner cavity of the water inlet channel (11a).

2. The ureteral sheath of claim 1, wherein, The mounting cover (5) is threadedly connected to the mounting part (12), and the pressure sensor (4) is fixedly connected to the mounting cover (5) through a spring (6).

3. The ureteral sheath of claim 1 or 2, wherein, The mounting part (12) is provided with a limiting stop edge (12a) at an inner end thereof, the pressure sensor (4) can be pressed against the limiting stop edge (12a), the limiting stop edge (12a) is annular, and an end portion of the pressure sensor (4) is embedded in an inner ring of the limiting stop edge (12a).

4. The ureteral sheath of claim 3, wherein, The limiting stop edge (12a) has an inclined limiting wall (12b), an abutting wall (41) of an end wall of the pressure sensor (4) is in abutment with the limiting wall (12b), and when the limiting wall (12b) is in abutment with the abutting wall (41), a gap (10) is formed between the pressure sensor (4) and an outer wall of the sheath body (1).

5. The ureteral sheath of claim 1 or 2, wherein, A display screen (7) and a controller (8) are electrically connected to one side of the mounting part (12), and the display screen (7) is electrically connected to the pressure sensor (4) through the controller (8).

6. The ureteral sheath of claim 1 or 2, wherein, The water inlet pipe (3) is obliquely arranged, and a lower end of the water inlet pipe (3) is integrally formed with the sheath body (1).

7. The ureteral sheath of claim 5, wherein, The display screen (7) is arranged on an outer side wall of the water inlet pipe (3).

8. The ureteral sheath of claim 2, wherein, A plurality of sealing rings (9) are arranged between an inner side wall of the mounting cover (5) and an outer side wall of the mounting part (12).

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