Intelligent hemodialysis catheter automatic cleaning dressing

Abstract

The invention discloses an intelligent hemodialysis catheter automatic cleaning dressing which comprises a dressing patch, a wrapping sleeve is arranged at the top of the dressing patch, a spray head is arranged at the end, not connected with the dressing patch, of the wrapping sleeve, a control host is connected to one side of the spray head, and a micro pump is integrated in the control host. The liquid discharge end of the micro pump is connected with the spray head, and the liquid suction end of the micro pump is provided with a liquid storage tank; the dressing patch is connected with a negative pressure suction bag, an electric control valve is arranged at the connecting end of the negative pressure suction bag and the dressing patch, and the electric control valve is connected with the control host. The spray head is arranged, the spray head is arranged on the catheter in a sleeving mode, the spray head is connected with a control host, a micro pump is integrated in the control host, the micro pump drives disinfectant to be sprayed to the hemodialysis catheter from the spray head, the surface of the hemodialysis catheter is cleaned and disinfected through the disinfectant, and the disinfectant flows to the skin around a hemodialysis puncture point along the hemodialysis catheter. Therefore, the purpose of disinfecting the skin around the puncture point is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of medical devices, and in particular to an intelligent automatic cleaning dressing for hemodialysis catheters. Background Art

[0002] Hemodialysis is an important treatment method for patients with renal failure to maintain life. As a pathway for extracorporeal circulation, the long-term indwelling of hemodialysis catheters is prone to cause a variety of complications. Among them, catheter-related infection is one of the most common and serious problems, which not only causes patients to have discomfort symptoms such as fever and chills, but may also cause bacteremia, sepsis, and even endanger life. Traditional catheter care methods mainly rely on medical staff to manually change dressings and disinfect the skin around the catheter regularly, but this method has many limitations. On the one hand, manual operation is difficult to ensure the standardization and consistency of each disinfection and cleaning, and it is easy to cause incomplete disinfection or excessive operation due to human factors to damage the catheter and surrounding tissues; on the other hand, since hemodialysis patients often need to undergo frequent dialysis treatment, the workload of medical staff is huge, and they may not be able to perform timely and meticulous care operations during each dialysis interval. In addition, the existing dressings only have simple covering and exudate absorption functions, and cannot actively clean the catheter and continuously protect against infection.

[0003] For example, a Chinese patent with publication number CN217310840U discloses a wrapping dressing for a hemodialysis catheter, comprising an dressing body, wherein a covering layer and a fixing layer which are mirror-symmetrical and foldable are arranged inside the dressing body, an adhesive layer is adhered to the outer wall of the covering layer, and the end of the adhesive layer which is farther from the covering layer can be bonded to the fixing layer, an adhesive sticker is fixedly connected to the outer wall of the fixing layer, an outer wall of the adhesive sticker is covered with a tearable film, a central venous catheter is placed on the top surface of the fixing layer, and the central venous catheter is located directly below the adhesive sticker; by providing the covering layer and the fixing layer, the cumbersome, complicated and extremely inconvenient process of removing the catheter in the existing device is effectively avoided, which is conducive to simple and quick removal of the catheter from the device and improves the efficiency of device disassembly.

[0004] The hemodialysis catheter wrapping dressing provided by the above scheme is mainly used to wrap the hemodialysis catheter left in the patient to prevent it from being contaminated. However, the existing dressing cannot disinfect the surface of the hemodialysis catheter and the skin around the puncture point, resulting in the hemodialysis catheter being easily contaminated when left in the patient for a long time, which is not conducive to the patient's health. Summary of the invention

[0005] The purpose of the present invention is to provide an intelligent automatic cleaning dressing for hemodialysis catheters, aiming to improve the problem that existing dressings are unable to disinfect the surface of hemodialysis catheters and the skin around the puncture point, resulting in the hemodialysis catheters being easily contaminated when left on the patient's body for a long time, which is not conducive to the patient's health.

[0006] The present invention is achieved in that:

[0007] An intelligent automatic cleaning dressing for hemodialysis catheter comprises a dressing patch, a wrapping sleeve is provided on the top of the dressing patch, a nozzle is provided at the end of the wrapping sleeve not connected to the dressing patch, a control host is connected to one side of the nozzle, a micro pump is integrated inside the control host, a discharge end of the micro pump is connected to the nozzle, and a liquid storage tank is installed at the suction end of the micro pump; the dressing patch is connected to a negative pressure suction bag, an electric control valve is provided at the connection end between the negative pressure suction bag and the dressing patch, and the electric control valve is connected to the control host.

[0008] Preferably, a skin-friendly patch is provided on the bottom surface of the dressing patch, a pressure ring is provided on the skin-friendly patch, a second connecting hole is provided between the wrapping sleeve and the pressure ring, an adapter is provided on the side of the nozzle, the inner diameter of the nozzle is smaller than the inner diameter of the wrapping sleeve, and a plurality of spray holes are evenly provided on one end of the nozzle facing the inside of the wrapping sleeve.

[0009] Preferably, the calculation formula for the coverage area S of the disinfectant sprayed by the nozzle on the catheter surface is as follows:

[0010]

[0011] Wherein, g is the acceleration of gravity, θ is the angle between the sprayed disinfectant and the hemodialysis catheter, d is the spray distance, and v is the flow velocity of the disinfectant at the outlet of the spray hole.

[0012] Preferably, a control panel is provided on the upper surface of the control host, a guide tube is provided at the discharge end of the micro pump, a connector is provided at the end of the guide tube, a suction port is provided at the suction end of the micro pump, a suction tube is provided in the middle of the suction port, and a weighted ball is provided at the end of the suction tube; a plurality of communication slots are provided at the front end of the control host, and a charging slot is provided at the rear end of the control host.

[0013] Preferably, an MCU control module is integrated inside the control host, and the MCU control module is connected to a power storage module, a cleaning control module, a valve control module and an alarm prompt module. The MCU control module is used to control the operation of the entire device, the power storage module is used to store electricity and supply each component, the cleaning control module is used to control the operation of the micro pump, the valve control module is used to control the opening and closing of the electric control valve, and the alarm prompt module is used to prompt the staff to replenish disinfectant. The output power of the micro pump is P, the efficiency of the pump is η, the voltage is U, and the current is I, then they satisfy the formula P=ηUI.

[0016] Preferably, the top of the negative pressure suction bag is provided with a bag mouth, a drainage tube is connected to the bag mouth, and the electric control valve is installed at one end of the drainage tube that is not connected to the negative pressure suction bag; an actuator is provided on the side of the electric control valve, a first communication line is provided at the end of the actuator, a first communication plug is provided at the end of the first communication line, and the first communication plug is connected to the control host; an installation joint is provided at the bottom end of the electric control valve.

[0017] Preferably, a transfer interface is provided at the front opening of the liquid storage tank, the transfer interface is threadedly connected to the liquid suction port, a liquid level sensor is integrated inside the liquid storage tank, and the liquid storage tank can store a specific volume V s of the disinfectant solution, and the tank body is made of leak-proof and corrosion-resistant materials. The remaining amount V of the disinfectant solution can be monitored in real time through the liquid level sensor r . Let the initial filling coefficient of the liquid storage tank be k (0 < k < 1), then V s = kV max ; where V max is the theoretical maximum volume of the liquid storage tank; when V r is lower than the set threshold V min , the alarm prompt module is triggered to notify the medical staff to replenish the disinfectant solution.

[0018] Preferably, it further includes a detector. The dressing sticker is provided with a first connection hole. The detector is threadedly connected to the first connection hole and is electrically connected to the control host; the MCU control module inside the control host is connected to a detection module and a data analysis module. The detection module is used to cooperate with the detection probe to detect the patient's skin, and the data analysis module is convenient for analyzing and processing the data detected by the detection probe.

[0019] Preferably, a detection probe is provided at the bottom end of the detector. The detection probe is threadedly connected to the first connection hole. The bottom end of the detection probe passes through the first connection hole and abuts against the patient's skin. A second communication line is provided at the top end of the detection probe, and a second communication plug is provided at the end of the second communication line. The second communication plug is plugged into the control host.

[0020] Preferably, a microprocessor is integrated inside the detector. The microprocessor is connected to a temperature sensor and a microorganism sensor. The temperature sensor is used to monitor the skin temperature around the catheter, and the microorganism sensor is used to detect the microorganism concentration around the catheter. When the microorganism sensor senses that the microorganism concentration exceeds the set threshold, the control host will control the micro pump to extract the disinfectant solution to disinfect the catheter.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. The present invention provides a nozzle, which is sleeved on the catheter. The nozzle is connected to a control host, and a micro pump is integrated inside the control host. The micro pump drives the disinfectant to be sprayed from the nozzle onto the hemodialysis catheter, and the surface of the hemodialysis catheter is cleaned and disinfected by the disinfectant. The disinfectant flows along the hemodialysis catheter to the skin around the hemodialysis puncture point, thereby achieving the purpose of disinfecting the skin around the puncture point, reducing the problem of infection of the patient's puncture point wound, and this structure can automatically disinfect and detect the hemodialysis catheter retained in the patient, reducing the workload of medical staff.

[0023] 2. The present invention provides a negative pressure suction bag, which can absorb the disinfectant used to clean the catheter and the skin, so that the used disinfectant can be quickly sucked into the negative pressure suction bag, ensuring that the catheter and skin are sufficiently clean after cleaning.

[0024] 3. The present invention is provided with a detector which can detect the temperature of the patient's skin and is also convenient for detecting microorganisms on the skin at the puncture point, so as to facilitate timely disinfection when abnormalities occur in the microorganisms. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the dressing of the present invention at the rear end oblique downward angle;

[0027] Figure 3 It is a schematic diagram of the structure of the dressing of the present invention at a rear end oblique upward viewing angle;

[0028] Figure 4 It is a schematic diagram of the structure of the control host of the present invention at a front oblique downward angle;

[0029] Figure 5 It is a schematic diagram of the structure of the control host of the present invention at the rear end oblique downward angle;

[0030] Figure 6 It is a schematic diagram of the structure of the negative pressure suction bag of the present invention;

[0031] Figure 7 It is a schematic diagram of the structure of the detector of the present invention;

[0032] Figure 8 It is a structural schematic diagram of the liquid storage tank of the present invention;

[0033] Fig. 9 It is a structural block diagram of the control host of the present invention;

[0034] Fig.10 It is a structural block diagram of the detector of the present invention.

[0035] In the figure: 1. dressing patch; 11. first connecting hole; 12. second connecting hole; 13. wrapping sleeve; 14. nozzle; 15. adapter; 16. nozzle hole; 17. skin-friendly patch; 18. pressure ring; 2. control host; 21. control panel; 22. communication slot; 23. micro pump; 24. guide tube; 25. connector; 26. liquid suction port; 27. liquid suction tube; 28. weighted ball; 29. ​​charging slot; 3. negative pressure suction bag; 31. bag opening; 32. drainage tube; 33. electric control valve; 34. actuator; 35. installation connector; 36. first communication line; 37. first communication plug; 4. detector; 41. detection probe; 42. second communication line; 43. second communication plug; 5. liquid storage tank; 51. adapter. DETAILED DESCRIPTION

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] The following is a further description with reference to the accompanying drawings and specific embodiments:

[0038] Example 1

[0039] like Figure 1 , Figure 2 and Figure 4As shown, an intelligent automatic cleaning dressing for hemodialysis catheters includes a dressing patch 1, which is used to adhere to the position where the hemodialysis catheter punctures the skin, ensuring the stability of the hemodialysis catheter while also protecting the hemodialysis puncture point to prevent infection at the puncture point. A wrapping sleeve 13 is provided on the top of the dressing patch 1. The wrapping sleeve 13 is convenient for wrapping on the indwelling hemodialysis catheter to prevent the hemodialysis catheter from being contaminated, and it is also convenient for disinfecting the hemodialysis catheter. A nozzle 14 is provided at the end of the wrapping sleeve 13 that is not connected to the dressing patch 1. The nozzle 14 is convenient for spraying disinfectant to disinfect the hemodialysis catheter. A control host 2 is connected to one side of the nozzle 14, and a micro pump 23 is integrated inside the control host 2. The discharge end of the micro pump 23 is connected to the nozzle 14, and a liquid storage tank 5 is installed at the suction end of the micro pump 23; the control host 2 is convenient for controlling the operation of the micro pump 23, so that the micro pump 23 extracts disinfectant from the liquid storage tank 5 and sprays the disinfectant into the nozzle 14, thereby achieving the purpose of disinfecting the hemodialysis catheter. The dressing 1 is connected to a negative pressure suction bag 3, and an electric control valve 33 is provided at the connection end between the negative pressure suction bag 3 and the dressing 1. The electric control valve 33 is connected to the control host 2. The negative pressure suction bag 3 is convenient for sucking away the disinfectant generated by cleaning the hemodialysis catheter to avoid the disinfectant being retained inside the wrapping sleeve 13, and the electric control valve 33 is controlled by the control host 2. The negative pressure suction bag 3 can only absorb the disinfectant generated by cleaning the hemodialysis catheter when the control host 2 opens the electric control valve 33.

[0040] like Figure 2 and Figure 3 As shown, the bottom surface of the dressing patch 1 is provided with a skin-friendly patch 17. The dressing patch 1 is conveniently pasted on the patient's skin with the skin-friendly patch 17 to protect the hemodialysis catheter and the skin at the puncture point of the hemodialysis catheter. A pressure ring 18 is provided on the skin-friendly patch 17, and the pressure ring 18 is convenient to be pressed around the puncture point. A second connecting hole 12 is provided between the wrapping sleeve 13 and the pressure ring 18, and the second connecting hole 12 is convenient to be connected to the negative pressure suction bag 3. An adapter 15 is provided on the side of the nozzle 14, and the adapter 15 is convenient for connecting the nozzle 14 to the liquid supply end of the control host 2. The inner diameter of the nozzle 14 is smaller than the inner diameter of the wrapping sleeve 13, and a plurality of spray holes 16 are evenly provided at one end of the nozzle 14 facing the inside of the wrapping sleeve 13. The spray holes 16 are convenient for spraying disinfectant on the hemodialysis catheter, thereby facilitating the disinfection of the disinfectant. The calculation formula for the coverage area S of the disinfectant sprayed by the nozzle 14 on the catheter surface is as follows:

[0041]

[0042] Wherein, g is the acceleration of gravity, θ is the angle between the sprayed disinfectant and the hemodialysis catheter, d is the spraying distance, and v is the flow velocity of the disinfectant at the outlet of the spray hole 16 .

[0043] like Figure 4 , Figure 5 and Fig. 9As shown, a control panel 21 is provided on the upper surface of the control host 2. The control panel 21 is convenient for controlling the operation of the entire device and for facilitating the operation and use of the entire control host 2. A guide tube 24 is provided at the discharge end of the micro pump 23. A connector 25 is provided at the end of the guide tube 24. The guide tube 24 and the connector 25 are convenient for connecting the micro pump 23 with the adapter 15, which is convenient for the operation and use of the micro pump 23. A liquid suction port 26 is provided at the liquid suction end of the micro pump 23. The liquid suction port 26 is convenient for connecting with the liquid storage tank 5. A liquid suction pipe 27 is provided in the middle of the liquid suction port 26. A counterweight ball 28 is provided at the end of the liquid suction pipe 27. The liquid suction pipe 27 cooperates with the counterweight ball 28 to facilitate the micro pump 23 to stably suck out the disinfectant inside the liquid storage tank 5. A plurality of communication slots 22 are provided at the front end of the control host 2. The communication slots 22 are convenient for connecting with the electric control valve 33 and other components. A charging slot 29 is provided at the rear end of the control host 2. The charging slot 29 is convenient for charging the inside of the control host 2. The control host 2 is internally integrated with an MCU control module, which is connected to a power storage module, a cleaning control module, a valve control module and an alarm prompt module. The MCU control module is used to control the operation of the entire device, the power storage module is used to store electricity and supply each component, the cleaning control module is used to control the operation of the micro pump 23, the valve control module is used to control the opening and closing of the electric control valve 33, and the alarm prompt module is used to prompt the staff to replenish the disinfectant. The output power P of the micro pump 23, the efficiency of the pump is η, and the voltage is U.

[0044] , the current is I, then the formula P=ηUI is satisfied between them.

[0045] like Figure 6 As shown, a bag opening 31 is provided on the top of the negative pressure suction bag 3, a drainage tube 32 is connected to the bag opening 31, and an electric control valve 33 is installed at the end of the drainage tube 32 that is not connected to the negative pressure suction bag 3; the drainage tube 32 is convenient for the negative pressure suction bag 3 to be connected to the dressing 1, an actuator 34 is provided on the side of the electric control valve 33, a first connecting line 36 is provided at the end of the actuator 34, a first connecting plug 37 is provided at the end of the first connecting line 36, and the first connecting plug 37 is connected to the control host 2; the actuator 34 cooperates with the first connecting line 36 and the first connecting plug 37 to facilitate the connection of the electric control valve 33 to the control host 2; a mounting joint 35 is provided at the bottom of the electric control valve 33, and the mounting joint 35 is used to be threadedly connected to the second connecting hole 12.

[0046] like Figure 8 As shown, the front opening of the liquid storage tank 5 is provided with an adapter 51, which is threadedly connected to the liquid suction port 26, so that the liquid storage tank 5 can be stably connected to the control host 2. A liquid level sensor is integrated inside the liquid storage tank 5. The liquid storage tank 5 can store a specific volume V s The tank is made of anti-leakage and corrosion-resistant materials. The remaining amount of disinfectant can be monitored in real time through the liquid level sensor. r, let the initial filling coefficient of the liquid storage tank 5 be k (0 < k < 1), then V s = kV max ; where V max is the theoretical maximum volume of the liquid storage tank 5; when V r is lower than the set threshold V min , the alarm prompt module is triggered to notify the medical staff to replenish the disinfectant solution.

[0047] Embodiment 2

[0048] As Figure 1 , Figure 2 and Figure 4 shown, an intelligent automatic cleaning dressing for hemodialysis catheters includes a dressing patch 1, which is used to bond to the position where the hemodialysis catheter penetrates the skin, ensuring the stability of the hemodialysis catheter and protecting the hemodialysis puncture site at the same time, avoiding infection of the puncture site. A wrapping sleeve 13 is provided at the top of the dressing patch 1. The wrapping sleeve 13 is convenient for wrapping the indwelling hemodialysis catheter to avoid contamination of the hemodialysis catheter and is also convenient for disinfecting the hemodialysis catheter. A spray head 14 is provided at one end of the wrapping sleeve 13 that is not connected to the dressing patch 1. The spray head 14 is convenient for spraying disinfectant solution to disinfect the hemodialysis catheter. A control host 2 is connected to one side of the spray head 14. A micro pump 23 is integrated inside the control host 2. The liquid discharge end of the micro pump 23 is connected to the spray head 14, and a liquid storage tank 5 is installed at the liquid suction end of the micro pump 23; the control host 2 is convenient for controlling the operation of the micro pump 23, so that the micro pump 23 extracts the disinfectant solution from the inside of the liquid storage tank 5 and sprays the disinfectant solution into the spray head 14, so as to achieve the purpose of disinfecting the hemodialysis catheter. The dressing patch 1 is connected with a negative pressure suction bag 3. An electric control valve 33 is provided at the connection end of the negative pressure suction bag 3 and the dressing patch 1. The electric control valve 33 is connected to the control host 2. The negative pressure suction bag 3 is convenient for sucking away the disinfectant solution generated by cleaning the hemodialysis catheter, avoiding the retention of the disinfectant solution inside the wrapping sleeve 13, and the electric control valve 33 is controlled by the control host 2. The negative pressure suction bag 3 can adsorb the disinfectant solution generated by cleaning the hemodialysis catheter only when the electric control valve 33 is opened by the control host 2.

[0049] As Figure 2 and Figure 3As shown, the bottom surface of the dressing patch 1 is provided with a skin-friendly patch 17. The dressing patch 1 is conveniently pasted on the patient's skin with the skin-friendly patch 17 to protect the hemodialysis catheter and the skin at the puncture point of the hemodialysis catheter. A pressure ring 18 is provided on the skin-friendly patch 17, and the pressure ring 18 is convenient to be pressed around the puncture point. A second connecting hole 12 is provided between the wrapping sleeve 13 and the pressure ring 18, and the second connecting hole 12 is convenient to be connected to the negative pressure suction bag 3. An adapter 15 is provided on the side of the nozzle 14, and the adapter 15 is convenient for connecting the nozzle 14 to the liquid supply end of the control host 2. The inner diameter of the nozzle 14 is smaller than the inner diameter of the wrapping sleeve 13, and a plurality of spray holes 16 are evenly provided at one end of the nozzle 14 facing the inside of the wrapping sleeve 13. The spray holes 16 are convenient for spraying disinfectant on the hemodialysis catheter, thereby facilitating the disinfection of the disinfectant. The calculation formula for the coverage area S of the disinfectant sprayed by the nozzle 14 on the catheter surface is as follows:

[0050]

[0051] Wherein, g is the acceleration of gravity, θ is the angle between the sprayed disinfectant and the hemodialysis catheter, d is the spraying distance, and v is the flow velocity of the disinfectant at the outlet of the spray hole 16 .

[0052] like Figure 4 , Figure 5 and Fig. 9 As shown, a control panel 21 is provided on the upper surface of the control host 2. The control panel 21 is convenient for controlling the operation of the entire device and for facilitating the operation and use of the entire control host 2. A guide tube 24 is provided at the discharge end of the micro pump 23. A connector 25 is provided at the end of the guide tube 24. The guide tube 24 and the connector 25 are convenient for connecting the micro pump 23 with the adapter 15, which is convenient for the operation and use of the micro pump 23. A liquid suction port 26 is provided at the liquid suction end of the micro pump 23. The liquid suction port 26 is convenient for connecting with the liquid storage tank 5. A liquid suction pipe 27 is provided in the middle of the liquid suction port 26. A counterweight ball 28 is provided at the end of the liquid suction pipe 27. The liquid suction pipe 27 cooperates with the counterweight ball 28 to facilitate the micro pump 23 to stably suck out the disinfectant inside the liquid storage tank 5. A plurality of communication slots 22 are provided at the front end of the control host 2. The communication slots 22 are convenient for connecting with the electric control valve 33 and other components. A charging slot 29 is provided at the rear end of the control host 2. The charging slot 29 is convenient for charging the inside of the control host 2. The control host 2 is internally integrated with an MCU control module, which is connected to a power storage module, a cleaning control module, a valve control module and an alarm prompt module. The MCU control module is used to control the operation of the entire device, the power storage module is used to store electricity and supply each component, the cleaning control module is used to control the operation of the micro pump 23, the valve control module is used to control the opening and closing of the electric control valve 33, and the alarm prompt module is used to prompt the staff to replenish the disinfectant. The output power P of the micro pump 23, the efficiency of the pump is η, and the voltage is U.

[0053] , If the current is I, then the formula P = ηUI is satisfied between them.

[0054] As Figure 6 shown, at the top of the negative pressure suction bag 3, there is a bag mouth 31. A drainage tube 32 is connected to the bag mouth 31. The electric control valve 33 is installed at one end of the drainage tube 32 that is not connected to the negative pressure suction bag 3. The drainage tube 32 facilitates the connection between the negative pressure suction bag 3 and the dressing patch 1. On the side of the electric control valve 33, there is an actuator 34. At the end of the actuator 34, there is a first connection line 36. At the end of the first connection line 36, there is a first connection plug 37. The first connection plug 37 is connected to the control host 2. The actuator 34, in cooperation with the first connection line 36 and the first connection plug 37, facilitates the connection between the electric control valve 33 and the control host 2. At the bottom end of the electric control valve 33, there is a mounting joint 35, and the mounting joint 35 is used for threaded connection with the second connection hole 12.

[0055] As Figure 8 shown, at the front end opening of the liquid storage tank 5, there is an adapter 51. The adapter 51 is threadedly connected to the liquid suction port 26, which facilitates the stable connection between the liquid storage tank 5 and the control host 2. Inside the liquid storage tank 5, a liquid level sensor is integrated. The liquid storage tank 5 can store a specific volume V s of disinfectant solution, and the tank body is made of anti-leakage and corrosion-resistant materials. The remaining amount V r of the disinfectant solution can be monitored in real time through the liquid level sensor. Let the initial filling coefficient of the liquid storage tank 5 be k (0 < k < 1), then V s = kV max ; where V max is the theoretical maximum volume of the liquid storage tank 5. When V r is lower than the set threshold V min , the alarm prompt module is triggered to notify the medical staff to replenish the disinfectant solution.

[0056] As Figure 1 , Figure 2 , Figure 7 and Fig. 9 shown, it also includes a detector 4. On the dressing patch 1, there is a first connection hole 11. The detector 4 is threadedly connected to the first connection hole 11. The connection between the detector 4 and the first connection hole 11 facilitates the disassembly, assembly, and use of the detector 4. And the detector 4 is electrically connected to the control host 2. This structure facilitates the connection between the detector 4 and the control host 2. The MCU control module inside the control host 2 is connected to a detection module and a data analysis module. The detection module is used to cooperate with the detection probe 41 to detect the patient's skin, and the data analysis module facilitates the analysis and processing of the data detected by the detection probe 41.

[0057] As Figure 7As shown, a detection probe 41 is provided at the bottom of the detector 4, and the detection probe 41 is threadedly connected to the first connection hole 11. The bottom of the detection probe 41 passes through the first connection hole 11 and rests on the patient's skin, which is convenient for detecting and processing the skin around the hemodialysis catheter. A second communication line 42 is provided at the top of the detection probe 41, and a second communication plug 43 is provided at the end of the second communication line 42. The second communication plug 43 is plug-connected to the control host 2. The second communication line 42 and the second communication plug 43 facilitate the detector 4 to be smoothly connected to the control host 2.

[0058] like Fig.10 As shown, the detector 4 is internally integrated with a microprocessor, and the microprocessor is connected to a temperature sensor and a microbial sensor. The temperature sensor is used to monitor the skin temperature around the catheter, and the microbial sensor is used to detect the concentration of microorganisms around the catheter. When the microbial sensor senses that the concentration of microorganisms exceeds a set threshold, the control host 2 will control the micropump 23 to pump disinfectant to disinfect the catheter.

[0059] Working principle: When in use, the dressing 1 is attached to the position where the hemodialysis catheter punctures the skin, so that the dressing 1 can stably protect the puncture point; then the wrapping sleeve 13 is wrapped around the hemodialysis sleeve. If a stop clamp is provided on the hemodialysis sleeve, the stop clamp can be wrapped with the wrapping sleeve 13; then the guide tube 24 of the control host 2 is connected to the wrapping sleeve 13, and the negative pressure suction bag 3 is connected to the dressing 1; the control host 2 will control the micro pump 23 to pump the disinfectant in the liquid storage tank 5 into the nozzle 14 , the disinfectant is sprayed on the hemodialysis catheter from the spray hole 16, and the disinfectant will flow along the hemodialysis catheter to the contact position between the hemodialysis catheter and the skin, so that the hemodialysis catheter and the skin are soaked with the disinfectant; at this time, the operation of the micro pump 23 is stopped, and after the disinfectant soaks the hemodialysis catheter and the skin around the hemodialysis catheter puncture point for a certain period of time, the control host 2 controls the electric control valve 33 on the negative pressure suction bag 3 to open, and the negative pressure suction bag 3 will absorb the disinfectant inside the wrapped sleeve 13 to prevent the disinfectant from staying inside the wrapped sleeve 13 for a long time. At the same time, the detector 4 can also be installed on the dressing 1. The detector 4 will detect the temperature of the patient's skin in real time, and the microbial sensor will continuously detect the patient's skin. When the microbial concentration exceeds the set threshold, the data of the microbial sensor is received by the control host 2, and the control host 2 will control the micro pump 23 to pump out the disinfectant to disinfect the hemodialysis catheter and the skin around the catheter.

[0060] In summary, compared with the prior art, the present application provides a nozzle 14, which is sleeved on the catheter, and the nozzle 14 is connected to a control host 2. A micro pump 23 is integrated inside the control host 2. The disinfectant is driven by the micro pump 23 to spray from the nozzle 14 onto the hemodialysis catheter, and the surface of the hemodialysis catheter is cleaned and disinfected by the disinfectant. The disinfectant flows along the hemodialysis catheter to the skin around the hemodialysis puncture point, thereby achieving the purpose of disinfecting the skin around the puncture point, reducing the problem of infection of the patient's puncture point wound, and this structure can automatically disinfect and detect the hemodialysis catheter retained in the patient, reducing the workload of medical staff.

[0061] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An intelligent hemodialysis catheter automatic cleaning dressing, comprising a dressing patch (1), characterized in that: The dressing patch (1) is provided with a wrapping sleeve (13) at the top, and a nozzle (14) is provided at the end of the wrapping sleeve (13) not connected to the dressing patch (1), and one side of the nozzle (14) is connected to a control host (2), and a micro pump (23) is integrated inside the control host (2), and the discharge end of the micro pump (23) is connected to the nozzle (14), and the suction end of the micro pump (23) is installed with a liquid storage tank (5); the dressing patch (1) is connected to a negative pressure suction bag (3), and an electric control valve (33) is provided at the connection end of the negative pressure suction bag (3) and the dressing patch (1), and the electric control valve (33) is connected to the control host (2).

2. The intelligent automatic cleaning dressing for hemodialysis catheter according to claim 1, characterized in that: The bottom surface of the dressing patch (1) is provided with a skin-friendly patch (17), the skin-friendly patch (17) is provided with a pressure ring (18), a second connecting hole (12) is provided between the wrapping sleeve (13) and the pressure ring (18), a conversion joint (15) is provided on the side of the nozzle (14), the inner diameter of the nozzle (14) is smaller than the inner diameter of the wrapping sleeve (13), and a plurality of spray holes (16) are evenly arranged at one end of the nozzle (14) facing the inside of the wrapping sleeve (13).

3. The intelligent automatic cleaning dressing for hemodialysis catheter according to claim 1, characterized in that: The calculation formula for the coverage area S of the disinfectant sprayed by the nozzle (14) on the catheter surface is as follows: Wherein, g is the acceleration due to gravity, θ is the angle between the sprayed disinfectant and the hemodialysis catheter, d is the spray distance, and v is the flow velocity of the disinfectant at the outlet of the spray hole (16).

4. The intelligent automatic cleaning dressing for hemodialysis catheter according to claim 1, characterized in that: The upper surface of the control host (2) is provided with a control panel (21); the discharge end of the micro pump (23) is provided with a guide tube (24); the end of the guide tube (24) is provided with a connector (25); the suction end of the micro pump (23) is provided with a suction port (26); the middle of the suction port (26) is provided with a suction tube (27); the end of the suction tube (27) is provided with a weighted ball (28); the front end of the control host (2) is provided with a plurality of communication slots (22); the rear end of the control host (2) is provided with a charging slot (29).

5. The intelligent automatic cleaning dressing for hemodialysis catheter according to claim 4, characterized in that: The control host (2) is internally integrated with an MCU control module, the MCU control module is connected to a power storage module, a cleaning control module, a valve control module and an alarm prompt module, the MCU control module is used to control the operation of the entire device, the power storage module is used to store electricity and supply it to various components, the cleaning control module is used to control the operation of the micro pump (23), the valve control module is used to control the opening and closing of the electric control valve (33), and the alarm prompt module is used to prompt the staff to replenish the disinfectant. The output power of the micro pump (23) is P, and the efficiency of the pump is η , If the voltage is U and the current is I, then the formula P=ηUI is satisfied between them.

6. The intelligent automatic cleaning dressing for hemodialysis catheter according to claim 1, characterized in that: The negative pressure suction bag (3) is provided with a bag opening (31) at the top, and a drainage tube (32) is connected to the bag opening (31); the electric control valve (33) is installed at the end of the drainage tube (32) not connected to the negative pressure suction bag (3); an actuator (34) is provided on the side of the electric control valve (33); a first connecting line (36) is provided at the end of the actuator (34); a first connecting plug (37) is provided at the end of the first connecting line (36); the first connecting plug (37) is connected to the control host (2); and a mounting joint (35) is provided at the bottom of the electric control valve (33).

7. The intelligent automatic cleaning dressing for hemodialysis catheter according to claim 5, characterized in that: A transfer interface (51) is provided at the front end opening of the liquid storage tank (5). The transfer interface (51) is threadedly connected to the liquid suction port (26). A liquid level sensor is integrated inside the liquid storage tank (5). The liquid storage tank (5) can store a specific volume V s of disinfectant solution, and the tank body is made of leak-proof and corrosion-resistant materials. The remaining amount V of the disinfectant solution can be monitored in real time through the liquid level sensor r . Let the initial filling coefficient of the liquid storage tank (5) be k (0 < k < 1), then V s = kV max ; where V max is the theoretical maximum volume of the liquid storage tank (5); when V r is lower than the set threshold V min , the alarm prompt module is triggered to notify the medical staff to replenish the disinfectant solution.

8. The intelligent automatic cleaning dressing for hemodialysis catheter according to any one of claims 1 to 7, characterized in that: The dressing patch (1) further comprises a detector (4), wherein a first connection hole (11) is provided on the dressing patch, wherein the detector (4) is threadedly connected to the first connection hole (11), and wherein the detector (4) is electrically connected to the control host (2); an MCU control module inside the control host (2) is connected to a detection module and a data analysis module, wherein the detection module is used to cooperate with a detection probe (41) to detect the patient's skin, and the data analysis module is used to facilitate analysis and processing of data detected by the detection probe (41).

9. The intelligent automatic cleaning dressing for hemodialysis catheter according to claim 8, characterized in that: The detector (4) is provided with a detection probe (41) at the bottom end, the detection probe (41) is threadedly connected to the first connection hole (11), the bottom end of the detection probe (41) passes through the first connection hole (11) and rests on the patient's skin, the detection probe (41) is provided with a second communication line (42) at the top end, the second communication line (42) is provided with a second communication plug (43) at the end, and the second communication plug (43) is plug-connected to the control host (2).

10. The intelligent automatic cleaning dressing for hemodialysis catheter according to claim 9, characterized in that: The detector (4) has a microprocessor integrated therein, and the microprocessor is connected to a temperature sensor and a microorganism sensor. The temperature sensor is used to monitor the skin temperature around the catheter, and the microorganism sensor is used to detect the concentration of microorganisms around the catheter. When the microorganism sensor senses that the concentration of microorganisms exceeds a set threshold, the control host (2) controls the micropump (23) to pump disinfectant to disinfect the catheter.

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