Air recognition automatic closing device for external pipe of peritoneal dialysis catheter

Abstract

The utility model discloses a peritoneal dialysis catheter external tube air recognition automatic closing device, which relates to the technical field of medical instruments and comprises a packaging box, a box cover is arranged at the upper end of the packaging box, an external tube is fixedly connected to one side of the packaging box, an inner cylinder is arranged at the position, located in the packaging box, of the external tube, a mounting opening is formed in one side of the inner cylinder, and the outer tube is fixedly connected with the packaging box. A mounting opening is formed in the packaging box, a pressure sensor used for detecting the internal pressure of the inner barrel is mounted in the mounting opening, an electromagnetic valve is further mounted at the position, located in the packaging box, of the external connecting pipe, a microcontroller is arranged in the packaging box, and the electromagnetic valve and the pressure sensor are both electrically connected with the microcontroller. When the device works, once air is detected to enter, the device can automatically trigger a clamping mechanism to effectively prevent the air from entering the abdominal cavity, so that the risk of serious complications such as peritonitis and the like is remarkably reduced.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to an automatic shut-off device for air recognition of the external connecting pipe of a peritoneal dialysis catheter. Background Technology

[0002] Peritoneal dialysis (PD) utilizes gravity to infuse the peritoneal cavity into the patient's peritoneal cavity via a catheter. Due to the concentration gradient of solutes across the peritoneum, solutes with higher concentrations move to those with lower concentrations (diffusion). By continuously replacing the peritoneal dialysis fluid, the goal is to remove metabolic waste products and toxic substances from the body and correct water and electrolyte imbalances.

[0003] Currently, most peritoneal dialysis access tubes are not equipped with air detection and automatic shut-off devices. This means that if the operator forgets to manually turn off the switch after fluid is drained, air may directly enter the abdominal cavity, potentially causing abdominal pain, bloating, or even peritonitis, leading to increased hospitalization rates and medical costs.

[0004] Current technology relies on the operator's attention and skill level. If the operator forgets to turn off the external tubing switch while busy or fatigued, air can enter and affect treatment outcomes. With the continuous development of medical technology, intelligentization and automation have become important trends in improving the quality of medical services. However, existing peritoneal dialysis external tubing still falls short in this regard.

[0005] Therefore, we designed an automatic shut-off device for air recognition of the external connecting pipe of peritoneal dialysis catheter to address the shortcomings in its current use. Utility Model Content

[0006] The purpose of this invention is to provide an automatic shut-off device for air recognition of the external connecting pipe of a peritoneal dialysis catheter, so as to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model provides the following technical solution:

[0008] An automatic shut-off device for air detection of the external connecting pipe of a peritoneal dialysis catheter includes a packaging box with a cover at the top. An external connecting pipe is fixedly connected to one side of the packaging box. An inner cylinder is located inside the packaging box, and an installation port is opened on one side of the inner cylinder. A pressure sensor for detecting the internal pressure of the inner cylinder is installed in the installation port. A solenoid valve is also installed inside the packaging box, and a microcontroller is located inside the packaging box. The solenoid valve and the pressure sensor are both electrically connected to the microcontroller.

[0009] Both sides of the external tube are equipped with connectors for connecting peritoneal dialysis catheters.

[0010] As a further embodiment of this utility model: an alarm light is provided on one side of the upper surface of the box cover, and a buzzer is provided on the other side of the upper surface of the box cover. Both the alarm light and the buzzer are electrically connected to the microcontroller.

[0011] As a further improvement of this utility model, each end of the outer pipe is provided with a sealing ring.

[0012] As a further embodiment of this utility model: the connector includes a mounting cylinder, which is fixedly connected to both sides of the packaging box. The mounting cylinder is concentric with the outer tube. The surface of the mounting cylinder is provided with connecting threads. Several sliding columns arranged in a ring are also slidably connected to the mounting cylinder. Each end of the sliding column is provided with a top ball. A spring is provided on the sliding column located outside the mounting cylinder. The connecting threads are provided with a pressing component for making the top balls move closer or further apart.

[0013] As a further embodiment of this utility model: the extrusion assembly includes a locking cylinder, one end of which is threadedly connected to a connecting thread, and the other end of the locking cylinder has an inclined locking groove that cooperates with the top ball.

[0014] As a further improvement of this utility model: a handle is also fixedly connected to the surface of the locking cylinder, and the surface of the handle is provided with several grooves.

[0015] As a further improvement of this utility model, the diameter of the inner cylinder is larger than the diameter of the outer pipe.

[0016] As a further improvement of this utility model: screw holes are provided at the four corners of the packaging box and the box cover, and the packaging box and the box cover are detachably connected by screws.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. Automatically detects air and automatically closes:

[0019] When this invention detects air entering the abdominal cavity during operation, the device will automatically trigger a clamping mechanism to effectively prevent air from entering the abdominal cavity, thereby significantly reducing the risk of serious complications such as peritonitis.

[0020] 2. Reduce human error and operational dependence:

[0021] This invention reduces human intervention through automated and intelligent design, thereby reducing operational errors caused by negligence or fatigue and improving the safety and reliability of treatment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of this utility model.

[0023] Figure 2 This is a schematic diagram of the internal structure of the packaging box in this utility model.

[0024] Figure 3 This is a schematic diagram of the joint structure in this utility model.

[0025] Figure 4 This is a schematic diagram of the structure of this utility model when connected to a peritoneal dialysis catheter.

[0026] The components include: 1. Encapsulation box; 2. Box cover; 3. Alarm light; 4. Buzzer; 5. Connector; 6. Outer pipe; 7. Sealing ring; 8. Solenoid valve; 9. Inner cylinder; 10. Mounting port; 11. Pressure sensor; 12. Microcontroller;

[0027] 51. Mounting cylinder; 52. Connecting thread; 53. Handle; 54. Locking cylinder; 55. Angled locking groove; 56. Spring; 57. Sliding column; 58. Top ball. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Please see Figures 1-4 In this embodiment of the present invention, the automatic shut-off device for air recognition of the external connecting pipe of the peritoneal dialysis catheter includes a packaging box 1, a box cover 2 at the upper end of the packaging box 1, an external connecting pipe 6 fixedly connected to one side of the packaging box 1, an inner cylinder 9 located inside the packaging box 1, an installation port 10 on one side of the inner cylinder 9, a pressure sensor 11 for detecting the internal pressure of the inner cylinder 9 installed in the installation port 10, and the diameter of the inner cylinder 9 being larger than the diameter of the external connecting pipe 6; a solenoid valve 8 is also installed inside the packaging box 1 located inside the external connecting pipe 6; a microcontroller 12 is located inside the packaging box 1, and the solenoid valve 8 and the pressure sensor 11 are both electrically connected to the microcontroller 12; an alarm light 3 is located on one side of the upper surface of the box cover 2, and a buzzer 4 is located on the other side of the upper surface of the box cover 2, and both the alarm light 3 and the buzzer 4 are electrically connected to the microcontroller 12.

[0030] When pressure sensor 11 detects air entering, it triggers a signal, which is transmitted to a microcontroller 12. The microcontroller 12 determines, based on preset algorithms and logical conditions, whether to close the solenoid valve 8. If so, the microcontroller 12 issues a command to control the solenoid valve 8 to quickly cut off the fluid passage of the external pipe 6, thereby preventing air from entering the abdominal cavity. Simultaneously with the closure of the solenoid valve 8, the microcontroller 12 sends commands to the alarm light 3 and buzzer 4 to activate them, alerting the operator.

[0031] Both sides of the outer tube 6 are provided with connectors 5 for connecting peritoneal dialysis catheters; the ends of the outer tube 6 are provided with sealing rings 7; the connector 5 includes an installation cylinder 51, which is fixedly connected to both sides of the packaging box 1. The installation cylinder 51 is concentric with the outer tube 6. The surface of the installation cylinder 51 is provided with connecting threads 52. Several sliding columns 57 arranged in a ring are also slidably connected to the installation cylinder 51. Each end of the sliding column 57 is provided with a top ball 58. A spring 56 passes through the sliding column 57 located outside the installation cylinder 51. The connecting threads 52 are provided with a squeezing component for moving the top balls 58 closer or further apart. During connection, the two ends of the outer tube 6 are first inserted into the corresponding peritoneal dialysis catheter interfaces. The sealing rings 7 provide a sealing function. At the same time, the squeezing component moves the top balls 58 synchronously toward the inserted peritoneal dialysis catheter and presses the peritoneal dialysis catheter to prevent it from falling off, making the connection and disassembly of the peritoneal dialysis catheter very convenient.

[0032] The compression assembly includes a locking cylinder 54, one end of which is threaded to a connecting thread 52. The other end of the locking cylinder 54 has a sloping locking groove 55 that engages with the top ball 58. A handle 53 is also fixedly connected to the surface of the locking cylinder 54, and the surface of the handle 53 has several grooves. In use, the locking cylinder 54 is rotated by the handle 53. The rotation of the locking cylinder 54 engages with the connecting thread 52, causing the locking cylinder 54 to move. The movement of the locking cylinder 54 causes the sloping locking groove 55 to compress the top ball 58, which, in conjunction with the spring 56, causes the top ball 58 to move, thereby achieving the fixation and release of the peritoneal dialysis catheter.

[0033] The four corners of the packaging box 1 and the box cover 2 are provided with screw holes. The packaging box 1 and the box cover 2 are detachably connected by screws. The use of screws to connect the packaging box 1 and the box cover 2 makes it easy to disassemble and maintain, and is convenient to use.

[0034] The working principle of this invention is as follows: During peritoneal dialysis, after the fluid in the external tube 6 is emptied, air begins to enter. At this time, the pressure sensor 11 detects the presence of air and transmits a signal to the microcontroller 12. The microcontroller 12 makes a judgment based on preset algorithms and logical judgment conditions. If it determines that the external tube 6 needs to be closed to prevent air from entering, it will issue a closing command. Upon receiving the command, the solenoid valve 8 quickly closes, cutting off the fluid channel in the external tube 6, thereby effectively preventing air from entering the abdominal cavity and ensuring the patient's safety.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Although this specification describes embodiments, not every embodiment contains only one technical solution. This method of description is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An automatic shut-off device for air detection of the external connecting pipe of a peritoneal dialysis catheter, comprising a sealing box (1), characterized in that: The upper end of the packaging box (1) is provided with a box cover (2). An outer tube (6) is fixedly connected to one side of the packaging box (1). An inner cylinder (9) is provided inside the packaging box (1) via the outer tube (6). An installation port (10) is opened on one side of the inner cylinder (9). A pressure sensor (11) for detecting the internal pressure of the inner cylinder (9) is installed in the installation port (10). A solenoid valve (8) is also installed inside the packaging box (1) via the outer tube (6). A microcontroller (12) is provided inside the packaging box (1). The solenoid valve (8) and the pressure sensor (11) are both electrically connected to the microcontroller (12). Both sides of the external tube (6) are provided with connectors (5) for connecting peritoneal dialysis catheters.

2. The peritoneal dialysis catheter external connector air recognition automatic shut-off device according to claim 1, characterized in that, An alarm light (3) is provided on one side of the upper surface of the box cover (2), and a buzzer (4) is provided on the other side of the upper surface of the box cover (2). The alarm light (3) and the buzzer (4) are both electrically connected to the microcontroller (12).

3. The peritoneal dialysis catheter external connector air recognition automatic closing device according to claim 1, characterized in that, Each end of the outer pipe (6) is provided with a sealing ring (7).

4. The peritoneal dialysis catheter external connector air recognition automatic shut-off device according to claim 1, characterized in that, The connector (5) includes a mounting cylinder (51), which is fixedly connected to both sides of the packaging box (1). The mounting cylinder (51) is concentric with the outer tube (6). The surface of the mounting cylinder (51) is provided with a connecting thread (52). Several sliding columns (57) arranged in a ring are also slidably connected to the mounting cylinder (51). Both ends of the sliding column (57) are provided with a top ball (58). A spring (56) is provided on the sliding column (57) located outside the mounting cylinder (51). The connecting thread (52) is provided with a pressing component for making the top balls (58) move closer or further apart.

5. The peritoneal dialysis catheter external connector air recognition automatic closing device according to claim 4, characterized in that, The extrusion assembly includes a locking cylinder (54), one end of which is threadedly connected to a connecting thread (52), and the other end of the locking cylinder (54) has an inclined locking groove (55) that cooperates with the top ball (58).

6. The peritoneal dialysis catheter external connecting pipe air recognition automatic closing device according to claim 5, characterized in that, The surface of the locking cylinder (54) is also fixedly connected to a handle (53), and the surface of the handle (53) has several grooves.

7. The peritoneal dialysis catheter external connecting pipe air identification automatic closing device according to claim 1, characterized in that, The diameter of the inner cylinder (9) is larger than the diameter of the outer pipe (6).

8. The peritoneal dialysis catheter external connector air recognition automatic shut-off device according to claim 1, characterized in that, The four corners of the packaging box (1) and the cover (2) are provided with screw holes, and the packaging box (1) and the cover (2) are detachably connected by screws.

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