Blood leakage monitoring device of blood purification equipment

Abstract

The utility model belongs to the technical field of medical instruments, and particularly relates to a blood leakage monitoring device of blood purification equipment, which comprises a transparent glass tube, a transmitting end component and a receiving end component, the transmitting end component is fixedly connected with the receiving end component, and a containing cavity is formed between the transmitting end component and the receiving end component. The transparent glass tube penetrates through and is fixed in the containing cavity, the transparent glass tube is vertically arranged, a light source and a light source circuit board are arranged in the transmitting end assembly, the transmitting end assembly is provided with a transmitting channel communicated with the light source and the containing cavity, and a color sensor and a sensor circuit board are arranged in the receiving end assembly. The receiving end assembly is provided with a receiving channel communicated with the color sensor and the containing cavity, and the transmitting channel and the receiving channel are oppositely arranged. No gap exists in the transparent glass tube, bubbles in the pipeline can be rapidly discharged from the transparent glass tube and cannot be reserved in the transparent glass tube, the transmitting end assembly and the receiving end assembly are arranged in a split mode, and replacement and inspection of parts are facilitated.

Description

Technical Field

[0001] This utility model belongs to the field of medical device technology, specifically relating to a blood leakage monitoring device for blood purification equipment. Background Technology

[0002] When using a dialysis machine to treat patients, the machine draws the patient's blood into the tubing, purifies it, and then reinfuses it into the patient's body. During the treatment process, excessive pressure may cause the dialysis membrane to rupture, leading to blood leakage and endangering the patient's life. Therefore, timely and accurate blood leakage alarms are crucial. In existing technologies, there are gaps between the transmitter and the outlet, and also between the receiver and the outlet. When air bubbles are present in the tubing, they can remain in these gaps and are difficult to expel. The presence of air bubbles will also cause a signal change at the receiver, resulting in a false blood leakage alarm and thus affecting the treatment process. Utility Model Content

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a blood leakage monitoring device for blood purification equipment. The device has a simple structure and can monitor whether the blood purification equipment is leaking blood in real time and accurately.

[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a blood leakage monitoring device for a blood purification equipment, comprising a transparent glass tube, a transmitter assembly, and a receiver assembly. The transmitter assembly and the receiver assembly are fixedly connected, and a receiving cavity is formed between the transmitter assembly and the receiver assembly. The transparent glass tube passes through and is fixed in the receiving cavity. The transparent glass tube is vertically arranged. A light source and a light source circuit board are provided in the transmitter assembly. The transmitter assembly has a transmission channel connecting the light source and the receiving cavity. A color sensor and a sensor circuit board are provided in the receiver assembly. The receiver assembly has a receiving channel connecting the color sensor and the receiving cavity. The transmission channel and the receiving channel are arranged opposite to each other. Both the light source and the color sensor are connected to a processor.

[0005] Preferably, the upper end of the transparent glass tube is the water outlet, and the lower end of the transparent glass tube is the water inlet.

[0006] Preferably, the transmitter assembly includes a transmitter cover and a transmitter mounting base. The transmitter cover is connected to one side of the transmitter mounting base, and a groove with a semi-circular cross-section is formed on the other side of the transmitter mounting base. The light source and the light source circuit board are installed between the transmitter cover and the transmitter mounting base. The receiver assembly includes a receiver cover and a receiver mounting base. The receiver cover is connected to one side of the receiver mounting base, and a color sensor and a sensor circuit board are installed between the transmitter cover and the transmitter mounting base. A groove is also formed on the other side of the receiver mounting base corresponding to the groove of the transmitter mounting base. The two grooves opposite each other form a receiving cavity.

[0007] Preferably, the transmitter end cover is threadedly connected to the transmitter end fixing base, and the receiver end cover is also threadedly connected to the receiver end fixing base.

[0008] Preferably, a mounting groove is provided in the middle of one side of both the transmitter mounting base and the receiver mounting base, and a mounting platform is provided in the middle of the mounting groove, with the light source circuit board and the sensor circuit board respectively installed in the two mounting platforms.

[0009] Preferably, both the transmitter end cover and the receiver end cover are provided with wire holes.

[0010] Preferably, both the transmitting channel and the receiving channel are horizontally arranged.

[0011] Preferably, a connecting groove is provided at both ends of the receiving cavity, and the outlet and inlet of the blood purification device are respectively connected to the two ends of the transparent glass tube, and the outlet and inlet are fixedly installed in the connecting groove.

[0012] Preferably, the processor is connected to an alarm light.

[0013] Compared with existing technologies, the above technical solution has the following beneficial effects:

[0014] 1. The transparent glass tube of this utility model is vertically connected to the blood purification equipment. The transparent glass tube is straight and has no other gaps for storing liquid in the middle. When there are air bubbles in the tube, the air bubbles will quickly flow from one end of the transparent glass tube to the other end and be discharged, without remaining in the transparent glass tube. Moreover, the air bubbles pass through the transparent glass tube at a very high speed. The circuit design will identify this moment as an air bubble interference signal, so it will not cause blood leakage to be detected, making the detection more accurate. The transmitter and receiver components of this utility model are set separately, which facilitates the replacement and inspection of parts and makes installation more convenient.

[0015] 2. The upper end of the transparent glass tube is the water outlet and the lower end is the water inlet, which allows air bubbles to be expelled from the transparent glass tube more quickly.

[0016] 3. The transmitter cover is threaded onto the transmitter mounting base, and the receiver cover is also threaded onto the receiver mounting base, facilitating the inspection and replacement of the light source or color sensor. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model.

[0018] Figure 2 This is an explosion diagram of the basic utility model.

[0019] Figure 3 This is a schematic diagram of the structure connecting the inlet and outlet of this utility model.

[0020] The components include: 1. Transmitter end cover; 2. Light source circuit board; 3. Transmitter end mounting base; 4. Transparent glass tube; 5. Receiver end mounting base; 6. Sensor circuit board; 7. Receiver end cover; 8. Transmitter channel; 9. Receiver channel; 10. Mounting slot; 11. Mounting platform; 12. Light source; 13. Color sensor; 14. Connecting slot; 15. Receiving cavity; 16. Mounting base; 17. Water inlet; 18. Water outlet; 19. Wiring hole; 20. Liquid inlet; 21. Liquid outlet; 22. Connecting hole. Detailed Implementation

[0021] Figures 1-3 This is the preferred embodiment of the present invention, which is described below in conjunction with the appendix. Figures 1-3 The present invention will be further described below.

[0022] like Figure 1 As shown, this utility model discloses a blood leakage monitoring device for a blood purification equipment, comprising a transparent glass tube 4, a transmitter assembly, and a receiver assembly. The transmitter assembly and receiver assembly are fixedly connected, forming a receiving cavity 15 between them to accommodate the transparent glass tube 4. The transparent glass tube 4 passes through and is fixed within the receiving cavity 15, and is vertically arranged. Both ends of the transparent glass tube 4 are connected to the inlet 20 and outlet 21 of the blood purification equipment, respectively. A light source 12 and a light source circuit board 2 are disposed within the transmitter assembly, which has a transmission channel 8 connecting the light source 12 to the receiving cavity 15. A color sensor 13 and a sensor circuit board 6 are disposed within the receiver assembly, which has a receiving channel 9 connecting the color sensor 13 to the receiving cavity 15. The transmission channel 8 and the receiving channel 9 are arranged opposite to each other. The light source 12 provides a monitoring light source for the color sensor 13. The color sensor 13 determines whether the blood purification equipment is leaking by monitoring changes in the color of the dialysate within the transparent glass tube 4. Both the light source 12 and the color sensor 13 are connected to a CPU processor.

[0023] In this embodiment, the upper end of the transparent glass tube 4 is the water outlet 18, and the lower end of the transparent glass tube 4 is the water inlet 17. The transparent glass tube 4 is straight and there are no other gaps in the middle for storing liquid. When there are air bubbles in the tube, the air bubbles will quickly flow from the lower end of the transparent glass tube to the upper end and be discharged. The air bubbles pass through the transparent glass tube 4 at a very fast speed. The circuit design will determine this moment as an air bubble interference signal, so it will not be detected as blood leakage, thus avoiding false alarms and affecting the treatment process.

[0024] The transmitter assembly and receiver assembly are separate. The transmitter assembly includes a transmitter cover 1 and a transmitter mounting base 3. The transmitter cover 1 is connected to one side of the transmitter mounting base 3. An external thread is machined on the outer side of the transmitter mounting base 3, and an internal thread is machined on the inner side of the transmitter cover 1. The transmitter cover 1 is threadedly connected to the transmitter mounting base 3, which facilitates the inspection or replacement of the internal light source 12 and light source circuit board 2. A groove with a semi-circular cross-section is opened on the other side of the transmitter mounting base 3. The light source circuit board 2 is installed between the transmitter cover 1 and the transmitter mounting base 3. In this embodiment, the light source 12 is an LED lamp bead, which is soldered onto the light source circuit board 2.

[0025] The receiver assembly includes a receiver cover 7 and a receiver mounting base 5. The receiver cover 7 is connected to one side of the receiver mounting base 5. External threads are machined on the outer side of the receiver mounting base 5, and internal threads are machined on the inner side of the receiver cover 7. The receiver cover 7 is also threaded onto the receiver mounting base 5. A color sensor 13 and a sensor circuit board 6 are mounted between the transmitter cover 1 and the transmitter mounting base 3. The color sensor 13 is soldered onto the sensor circuit board 6. A groove is also formed on the other side of the receiver mounting base 5 corresponding to the groove in the transmitter mounting base 3. After the transmitter mounting base 3 and the receiver mounting base 5 are connected, the two grooves relative to each other form a receiving cavity 15. The transmitter cover 1 and the receiver cover 7 can block light.

[0026] In this embodiment, the color sensor 13 monitors three colors: red, green, and blue. The color sensor 13 transmits the measured red, green, and blue color data to the CPU processor in the form of frequency signals. The CPU processor processes the frequency signals and converts them into digital signals. When the dialysis waste fluid is mixed with blood, the frequencies of the red and green colors decrease, and the converted digital signals also decrease. Both the transmitting channel 8 and the receiving channel 9 are horizontally positioned. The light source 12 is located at one end of the transmitting channel 8, and the color sensor 13 is located at one end of the receiving channel 9, ensuring that the color sensor 13 accurately monitors the color of the dialysis fluid inside the transparent glass tube 4.

[0027] like Figure 2 As shown, mounting grooves 10 are provided in the middle of one side of both the transmitter mounting base 3 and the receiver mounting base 5. The diameter of the end of the mounting groove 10 near the transparent glass tube 4 is smaller than that of the other end, thus forming a mounting platform 11 in the middle of the mounting groove 10. The light source circuit board 2 is mounted on the mounting platform 11 of the transmitter mounting base 3, and the sensor circuit board 6 is mounted on the mounting platform 11 of the receiver mounting base 5. Wiring holes 19 are provided on both the transmitter cover 1 and the receiver cover 7. Connecting holes 22 are provided on one side of the mounting grooves 10 on both the transmitter mounting base 3 and the receiver mounting base 5. The transmitter mounting base 3 and the receiver mounting base 5 are connected by bolts passing through the two connecting holes 22. A mounting base 16 is provided on one side of the receiver mounting base 5 or the transmitter mounting base 3, allowing the device to be installed on a blood purification device.

[0028] like Figure 3 As shown, connecting grooves 14 are provided at both ends of the receiving cavity 15. The outlet 21 of the blood purification device is connected to the lower end of the transparent glass tube 4, and the inlet 20 is connected to the upper end of the transparent glass tube 4. The outlet 21 and the inlet 20 are fixedly installed in the connecting grooves 14.

[0029] The CPU processor is also connected to the blood purification equipment via RS485. The CPU processor controls the light source 12 to remain constantly lit, providing light for the entire blood leakage sensor cavity. The color sensor 13 detects the color of the dialysate, and determines whether there is blood leakage by detecting changes in the color of the dialysate. The color sensor 13 transmits the measured red, green, and blue color data to the CPU processor in the form of frequency. The CPU processor processes the frequency signal and converts it into a digital signal. When the dialysate waste liquid is mixed with blood, the frequencies of the red and green colors decrease, and the converted digital signals decrease accordingly. The CPU processor is connected to an alarm light. When the digital signal reaches the blood leakage alarm threshold signal, the CPU processor controls the alarm light to brighten, and at the same time sends the current blood leakage status to the blood purification equipment via RS485 communication. The blood purification equipment then issues an audible and visual alarm signal.

[0030] In use, the transparent glass tube 4 is vertically positioned. The outlet 21 of the blood purification device is connected to the upper end of the transparent glass tube 4, and the inlet 20 is connected to the lower end of the transparent glass tube 4. Because the diameter of the transparent glass tube 4 is small, the dialysate will quickly fill the entire pipeline. The transparent glass tube 4 is vertically placed inside the blood purification device. The transparent glass tube 4 is straight and there is no other space for storing liquid in the middle. When there are air bubbles in the pipeline, the air bubbles will quickly flow from the lower end to the upper end of the transparent glass tube 4 and be discharged, without remaining in the transparent glass tube 4. This time is very short. The circuit design will judge this moment as an air bubble interference signal, so no blood leakage alarm will be generated. Only when the color sensor 13 detects a decrease in the frequency of the red and green colors will a blood leakage alarm be generated.

[0031] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of this utility model without departing from its technical solution shall still fall within the protection scope of this utility model.

Claims

1. A blood leakage monitoring device for a blood purification apparatus, characterized in that: The device includes a transparent glass tube (4), a transmitter assembly, and a receiver assembly. The transmitter assembly and the receiver assembly are fixedly connected and form a cavity (15) between them. The transparent glass tube (4) passes through and is fixed in the cavity (15). The transparent glass tube (4) is vertically arranged. A light source (12) and a light source circuit board (2) are provided in the transmitter assembly. The transmitter assembly has a transmission channel (8) that connects the light source (12) and the cavity (15). A color sensor (13) and a sensor circuit board (6) are provided in the receiver assembly. The receiver assembly has a receiving channel (9) that connects the color sensor (13) and the cavity (15). The transmission channel (8) and the receiving channel (9) are arranged opposite to each other. The light source (12) and the color sensor (13) are both connected to the processor.

2. The blood leakage monitoring device for a blood purification equipment according to claim 1, characterized in that: The upper end of the transparent glass tube (4) is the water outlet, and the lower end of the transparent glass tube (4) is the water inlet.

3. The blood leakage monitoring device for a blood purification equipment according to claim 1, characterized in that: The transmitter assembly includes a transmitter cover (1) and a transmitter mounting base (3). The transmitter cover (1) is connected to one side of the transmitter mounting base (3). A groove with a semi-circular cross-section is provided on the other side of the transmitter mounting base (3). The light source (12) and the light source circuit board (2) are installed between the transmitter cover (1) and the transmitter mounting base (3). The receiver assembly includes a receiver cover (7) and a receiver mounting base (5). The receiver cover (7) is connected to one side of the receiver mounting base (5). The color sensor (13) and the sensor circuit board (6) are installed between the transmitter cover (1) and the transmitter mounting base (3). A groove is also provided on the other side of the receiver mounting base (5) corresponding to the groove of the transmitter mounting base (3). The two grooves form a receiving cavity (15) opposite to each other.

4. The blood leakage monitoring device for a blood purification equipment according to claim 3, characterized in that: The transmitter end cover (1) is threadedly connected to the transmitter end fixing seat (3), and the receiver end cover (7) is also threadedly connected to the receiver end fixing seat (5).

5. A blood leakage monitoring device for a blood purification equipment according to claim 3, characterized in that: Mounting slots (10) are provided in the middle of one side of both the transmitter mounting base (3) and the receiver mounting base (5), and a mounting platform (11) is provided in the middle of the mounting slot (10). The light source circuit board (2) and the sensor circuit board (6) are respectively installed in the two mounting platforms (11).

6. A blood leakage monitoring device for a blood purification equipment according to claim 3, characterized in that: Both the transmitter end cover (1) and the receiver end cover (7) are provided with wire holes (19).

7. A blood leakage monitoring device for a blood purification equipment according to claim 1, characterized in that: Both the transmitting channel (8) and the receiving channel (9) are horizontally arranged.

8. The blood leakage monitoring device for a blood purification equipment according to claim 1, characterized in that: A connecting groove (14) is provided at both ends of the receiving cavity (15). The outlet (21) and inlet (20) of the blood purification device are respectively connected to the two ends of the transparent glass tube (4), and the outlet (21) and inlet (20) are fixedly installed in the connecting groove (14).

9. A blood leakage monitoring device for a blood purification equipment according to claim 1, characterized in that: The processor is connected to an alarm light.

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