Rapid automatic response urine drainage equipment and special drainage material

Abstract

The invention relates to urine drainage equipment capable of quickly and automatically responding and a special drainage material, an anti-leakage shell 20 in the special drainage material is provided with an automatic trigger switch which can automatically sense the urination state of a patient and quickly respond to start negative pressure suction, and the automatic trigger switch is automatically switched off after urination is finished, so that the urination state of the patient can be automatically sensed. And the urine drainage equipment 10 is recovered to a standby or dormant state. According to the technical scheme, the prepared nursing consumables are lower in cost and high in universality, the urination state monitoring sensitivity is high, the distortion or false triggering probability is extremely low, the negative pressure starting response time is short, and the problem of urine overflow caused by urine sensing delay or negative pressure starting lagging after urination is avoided.

Description

Technical Field

[0001] The invention relates to a urine drainage device with rapid and automatic response and a special drainage material, which are used for urination care of bedridden patients and belong to the field of medical devices or nursing products. Background Art

[0002] Urinary care is an important issue in the care of elderly patients. If the elderly who are bedridden for a long time cannot urinate normally, they usually use urinals to urinate in bed, place catheters or wear diapers. However, the negative effects of these methods are also prominent. For example, urinating in bed with urinals requires a lot of work for caregivers. Urine needs to be placed and dumped every few hours, which is especially inconvenient for night care. For patients with long-term indwelling catheters, catheter-related urinary tract infections are common complications. The long-term use of care methods such as diapers often causes bedsores. Moreover, adults have a large amount of urine, and the cost of care materials for frequent changes of diapers is also high. It can be seen that the existing urination care technology for long-term bedridden patients has major deficiencies.

[0003] To this end, the inventors propose a rapid and automatic response urine drainage device and a special drainage material to fill the deficiencies in the existing urination care for long-term bedridden patients. Summary of the invention

[0004] The invention relates to a urine drainage device with rapid and automatic response and a special drainage material. The urine drainage device and the special drainage material are two relatively independent units and need to be used in combination.

[0005] A fast and automatic response urine drainage device mainly comprises a control mainboard, a vacuum pump, a pressure sensor, a gravity sensor, a communication module and a human-computer interaction interface.

[0006] The control motherboard is an integrated circuit constructed by components such as a core processor, memory, signal processor, and power module, and is prepared using conventional integrated circuit welding or patch technology.

[0007] The control mainboard is also provided with embedded software, which is a software program used for hardware driving, data monitoring, status prompting and negative pressure drainage control. The embedded software is burned into the memory of the control mainboard.

[0008] The vacuum pump is a negative pressure device that provides a vacuum environment for the negative pressure drainage container and the drainage tube. The vacuum pump is connected to the control main board. In conventional applications, the working pressure adjustment range of the vacuum pump is not narrower than -40cmH20~0.

[0009] The pressure sensor is used to dynamically monitor the pressure value created by the vacuum pump in the negative pressure drainage container and the drainage tube. The range of the pressure sensor is not narrower than -40cmH20~0, and the measurement accuracy is not less than 1cmH20. The pressure sensor is connected to the control mainboard and sends the pressure data obtained by dynamic monitoring to the core processor.

[0010] The gravity sensor dynamically monitors the amount of urine discharged by the patient in the negative pressure drainage container. The range of the gravity sensor is not narrower than 0-2000g, and the measurement accuracy is not less than 1g. The gravity sensor is connected to the control mainboard and sends the urine volume data obtained by dynamic monitoring to the core processor.

[0011] The communication module uses WiFi or Bluetooth, and the communication module communicates remotely with the user monitoring terminal (including computer, iPad or mobile phone). In the working state, the communication module sends the equipment working status information and monitoring information to the client, and can send a prompt or alarm signal when the negative pressure drainage container exceeds the limit.

[0012] The human-computer interaction interface includes a display screen, a data interface and operation function keys.

[0013] A urine drainage device with rapid automatic response has a physical interface combined with a special drainage material on the periphery, the physical interface includes a hanging piece for hanging a negative pressure drainage container, the hanging piece is arranged below a gravity sensor; includes a switch interface for connecting an automatic trigger switch, the switch interface is arranged on the periphery of a control mainboard; includes a negative pressure interface connected to the negative pressure drainage container or a drainage tube, the negative pressure interface is connected to the negative pressure air path interface of a vacuum pump; also includes a pressure measuring interface connected to the negative pressure drainage container or the drainage tube, the pressure measuring interface is connected to the pressure measuring port of a pressure sensor.

[0014] A special drainage material comprises a wearable urine collector, an automatic trigger switch, a drainage tube and a negative pressure drainage container.

[0015] Wearable urine collector is a device worn on the periphery of the urethra to dynamically collect and divert urine. Wearable urine collector is mainly composed of anti-leakage shell, adsorbent material, suction cavity and drainage port.

[0016] The anti-leakage shell is an isolation device that is easy for patients to wear or fix, and prevents urine from leaking to the periphery. The anti-leakage shell is made of flexible materials including latex, silicone rubber, etc. The specific shape of the anti-leakage shell is not limited. Preferably, according to the different shapes of the male and female vulva parts, combined with ergonomics and the convenience of wearing, the wearable urine collector structure is divided into two forms for men and women. For example, the wearable urine collector for men adopts a sleeve-shaped or bag-shaped structure, which is worn and fixed on the periphery of the penis, and the wearable urine collector for women adopts a bowl-shaped or disc-shaped structure, which is fixed upside down on the periphery of the female urination opening.

[0017] The adsorbent material is used to cover or wrap around the periphery of the patient's urethral opening. When the patient urinates, the adsorbent material can quickly absorb urine and guide it into the suction cavity to prevent urine from overflowing from the periphery of the anti-leakage shell. The adsorbent material is arranged on the inner side of the anti-leakage shell and is fixed in a three-sided or annular structure, but at least one side of the adsorbent material should be exposed, and the exposed side is combined with the patient's urination opening.

[0018] The adsorbent material is made of flexible materials including medical non-woven fabrics (such as pure cotton spunlace fabrics, perforated hot air non-woven fabrics, perforated spunbond non-woven fabrics), sponges and chemical fiber fabrics. Preferably, the adsorbent material adopts a composite structure, the surface layer in contact with the urethra opening is made of medical non-woven fabrics, the inner layer is made of sponges or chemical fiber cotton, and the sponges or chemical fiber cotton are provided with diversion holes or diversion grooves inside.

[0019] The suction chamber is arranged at the downstream position of the anti-leakage shell, and the suction chamber is combined with the adsorbent material to gather the urine dynamically collected by the adsorbent material into the suction chamber. The shape of the suction chamber is not limited, and the internal volume is required to be at least 2ml-5ml. The suction chamber can be arranged separately downstream of the anti-leakage shell, or it can be integrally formed with the anti-leakage shell. For example, when preparing men's products, the anti-leakage shell adopts a cylindrical bag structure (similar to a condom structure) made of silicone material, and an elastic band or elastic ring is provided on the outer periphery of the bag. A cylindrical suction chamber is provided at the bottom of the bag, and the adsorbent material is arranged above the suction chamber. The volume of the suction chamber is 3ml-5ml.

[0020] A drainage port is provided in the suction cavity, and the drainage port is combined with a drainage tube. Preferably, the drainage port is provided at the bottom of the suction cavity, and the drainage port is combined with the drainage tube and connected.

[0021] The automatic trigger switch is composed of a positive electrode sheet, a negative electrode sheet and a 2-core extension wire. The positive electrode sheet and the negative electrode sheet must not be short-circuited or touch each other. The tails of the positive electrode sheet and the negative electrode sheet are respectively connected to one end of the extension wire. The positive electrode sheet and the negative electrode sheet are arranged left and right or up and down. For example, the positive electrode sheet and the negative electrode sheet are arranged in the air left and right, and the distance between the positive electrode sheet and the negative electrode sheet is not less than 1mm.

[0022] The automatic trigger switch is arranged inside the anti-leakage housing and should be arranged at a position where urine must flow. Preferably, the positive electrode sheet and the negative electrode sheet are arranged in a guide groove inside the adsorbent material, or the positive electrode sheet and the negative electrode sheet are arranged in a suction chamber, and the extension wires of the positive electrode sheet and the negative electrode sheet are connected to the device connection terminal, and the device connection terminal communicates with the urine drainage device. The device connection terminal used includes a DC connector, a USB connector or an audio connector, and the connection terminal is connected to the urine drainage device and communicates.

[0023] For disposable drainage materials, the manufacturing cost will directly determine the applicability and inclusiveness of the present invention. In order to further optimize the cost, the preferred preparation method of the automatic trigger switch is to use the two exposed metal cores at the end of the extension wire as the positive and negative electrodes of the automatic trigger switch, and the two metal cores of the extension wire are arranged in the air, and the end of the extension wire is provided with a device connection terminal. For example, the extension wire adopts a cross-section of 1mm 2 -2.5mm 2 The copper or aluminum two-core insulated wire has a metal inner core exposed at the head end with a length of 1mm-3mm, which serves as the positive and negative poles respectively. The arrangement spacing of the two metal inner cores is not less than 1mm.

[0024] In order to prevent the positive and negative electrodes of the automatic trigger switch from short-circuiting under external force, preferably, a limit device is provided between the positive and negative electrodes of the automatic trigger switch, and the positive and negative electrodes are respectively fixed in the limit groove or limit hole. For example, the positive and negative electrodes of the automatic trigger switch are prepared as a two-pin pin or micro plug structure, and the rear ends of the positive and negative electrodes are provided with extension wires, and the ends of the extension wires are provided with device connection terminals.

[0025] The drainage tube is a flexible tube connecting the suction cavity and the negative pressure drainage container. The head end of the drainage tube is connected to the suction cavity, and the end of the drainage tube is connected to the inner cavity of the negative pressure drainage container. The drainage tube is made of medical soft polyvinyl chloride, and the commonly used technical parameters are, for example, an outer diameter of 5mm-8mm, a tube wall thickness of 0.5mm-0.8mm, and is required to withstand a negative pressure of ≥40cmH2O.

[0026] The negative pressure drainage container is an apparatus for collecting and temporarily storing urine. The negative pressure drainage container is provided with a liquid inlet, a negative pressure interface and a urination switch. The liquid inlet and the negative pressure interface are respectively arranged above the negative pressure drainage container, the liquid inlet is connected to the end of the drainage tube, and the negative pressure interface is connected to the negative pressure port of the urine drainage device by a negative pressure tube. The urination switch is arranged at the bottom of the negative pressure drainage container, and is used to discharge the urine collected in the negative pressure drainage container at a fixed time.

[0027] Since the daily urine volume discharged by adults is about 1000ml-2000ml, the capacity of existing urine drainage bottles is usually 2000ml. When using negative pressure technology for urine drainage, the vacuum pump usually needs to extract the air in the negative pressure drainage container for several seconds before applying sufficient negative pressure to the negative pressure drainage container and the drainage tube to achieve the purpose of attracting urine into the negative pressure drainage container. Therefore, if a negative pressure drainage container with a larger volume is used, the negative pressure drainage container and the drainage tube cannot generate sufficient negative pressure in the first few seconds after the vacuum pump is started, causing the patient's urination to be out of sync with the negative pressure drainage speed, and easily causing the discharged urine to overflow to the periphery. Preferably, the negative pressure drainage container adopts a parent-child combination structure, the child drainage bottle is arranged in the upstream position, the mother drainage bottle is arranged in the downstream position, and the liquid inlet and the negative pressure interface are respectively arranged above the child drainage bottle. The sub-drainage bottle and the main drainage bottle are connected by an adapter or a catheter. A one-way valve or a check device is provided at the combination of the sub-drainage bottle and the main drainage bottle. The sub-drainage bottle discharges urine into the main drainage bottle in one direction, and the urine or air in the main drainage bottle cannot flow back or be sucked into the sub-drainage bottle. For example, taking the preparation of a negative pressure drainage container with an effective volume of 2000ml as an example, the volume of the sub-drainage bottle can be defined as 300ml-500ml, and the volume of the main drainage bottle can be defined as 1500ml-1700ml. The sub-drainage bottle and the main drainage bottle are connected by an upper and lower structure of a hose with an inner diameter of 6mm-10mm, and an anti-backflow diaphragm is provided at the combination of the sub-drainage bottle and the main drainage bottle.

[0028] In order to further optimize the cost, the negative pressure drainage container adopts a negative pressure drainage bottle and a urine collection bag combination structure. The negative pressure drainage bottle is set at the upstream position of the urine collection bag, and the liquid inlet and negative pressure interface are respectively set above the negative pressure drainage bottle. The negative pressure drainage bottle and the urine collection bag are combined with an adapter or a catheter, and an anti-backflow diaphragm is provided at the combination of the negative pressure drainage bottle and the urine collection bag. The volume of the negative pressure drainage bottle is defined as 300ml-500ml, and the volume of the urine collection bag is defined as 1500ml-1700ml.

[0029] A urine drainage device with rapid and automatic response is used in combination with a special drainage material. The control method for rapid and automatic response to clean up the patient's urine is: a feedback control circuit consisting of an automatic trigger switch, a core processor and a vacuum pump is used to form a closed loop. Among them, the positive pole of the automatic trigger switch is connected to one of the pins of the core processor, the negative pole is connected to the D line in the control mainboard, and the vacuum pump is controlled by the core processor. The start or stop of the vacuum pump is automatically feedback controlled by the feedback control circuit. When the urine drainage device is in standby or dormant state, the core processor loads a stable current to the positive pole of the automatic trigger switch, such as a 3.3V current, and dynamically monitors the voltage value of the negative pole connected to the D line. When the patient starts to urinate, the adsorbent material on the periphery of the urethral opening sucks the urine and diverts it to the inside of the anti-leakage shell and flows through the automatic trigger switch. Based on the good conductivity of urine, the positive and negative electrodes of the automatic trigger switch are connected by urine, and the core processor detects that the voltage at the D line where the negative electrode is located has a significant voltage increase compared to the initial voltage. For example, the voltage at the D line rises from 0 to 2.2V-2.8V, and the core processor immediately automatically starts the vacuum pump, and the vacuum pump works according to the preset negative pressure value. During this period, the pressure sensor dynamically monitors the negative pressure value in the negative pressure drainage container or drainage tube, and feeds back to the core processor to achieve dynamic adjustment of the negative pressure output by the vacuum pump. After the urine inside the leak-proof shell is sucked and emptied by negative pressure, the positive and negative electrodes of the automatic trigger switch are restored to the disconnected state, the voltage at the D line returns to the initial state, and the vacuum pump automatically stops working or stops working after a delay. For example, after the positive and negative electrodes of the automatic trigger switch are restored to the disconnected state, the vacuum pump stops working after a delay of 1-5 minutes. After the negative pressure drainage is completed, the gravity sensor reads the measured urine volume. When the gravity sensor senses that the amount of urine in the negative pressure drainage container exceeds the safe capacity, for example, exceeds 80% of the approved capacity, the human-computer interaction interface gives a prompt or warning message.

[0030] The beneficial effect of the present invention is that the anti-leakage shell in the special drainage material is provided with an automatic trigger switch. The closed-loop feedback control circuit composed of the automatic trigger switch, the core processor, and the vacuum pump can automatically sense the patient's urination status and respond quickly to start negative pressure suction. When urination is completed, the automatic trigger switch is automatically disconnected, and the urine drainage device returns to standby or dormant state. Compared with the technical method of using liquid level sensors, temperature sensors, humidity sensors and other sensors to sense urine, this technical solution not only has lower cost and high inclusiveness in the preparation of nursing consumables, but also has high sensitivity in urination status monitoring, extremely low probability of distortion or false triggering, and fast negative pressure response time, which avoids urine overflow caused by delayed urine perception after urination or delayed negative pressure start-up. This technical solution fills the gap in this field and has great promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1This is a working principle diagram of the urine drainage device of the present invention. Figure 2 This is a schematic diagram of a structure of a urine drainage device and a special drainage material for men in combination according to an embodiment of the present invention. Figure 3 This is a schematic diagram of an embodiment of a special drainage material for women of the present invention. Figure 4 This is a schematic diagram of an automatic trigger switch embodiment of the present invention. Figure 5 This is a schematic diagram of an embodiment of a negative pressure drainage container using a negative pressure drainage bottle and a urine collection bag combined structure of the present invention. As shown in the figure: Urine drainage device 10, vacuum pump interface 11, gravity sensor suspension 12, switch interface 14, anti-leakage shell 20, adsorbent material 21, suction chamber 22, drainage port 23, positive pole 24 of automatic trigger switch, negative pole 25 of automatic trigger switch, extension wire 26, drainage tube 27, negative pressure drainage container 28, liquid inlet 29, negative pressure interface 30, negative pressure tube 31, negative pressure drainage bottle 33, urine collection bag 34, anti-backflow diaphragm 35, urination switch 36, device connection terminal 37 DETAILED DESCRIPTION

[0032] The present invention is specifically described below in conjunction with the accompanying drawings and embodiments.

[0033] Example 1: A method for preparing the urine drainage device 10 of the present invention 1. If Figure 1 As shown, the schematic diagram and PCB diagram of the urine drainage device 10 are designed.

[0034] 2. The main components used are as follows: The core processor (MCU) uses the STC89C52 microcontroller (STC company); The pressure sensor adopts model GZP6847 (Wuxi), with a range of -100KPa to 0KPa; The gravity sensor adopts model SBT620 (Guangzhou), with a maximum error of ±0.2% and a measuring range of 0 to 3kg; The communication module uses a WiFi module, model QCA9377 (Qualcomm); The storage module uses Samsung HY27US08561A chip with a storage capacity of 32M.

[0035] The display screen of the human-computer interaction interface uses a 2.1-inch LCD liquid crystal, with an operating voltage of DC3.0V; the sound prompt uses a conventional buzzer.

[0036] The power supply uses an internal power supply, using a 10000mA, 3.7V rechargeable lithium battery (Evee).

[0037] 3. Design the PCB according to conventional integrated circuit technology, and use electronic patch or welding technology to prepare the control main board. The control main board is 50 mm long and 40 mm wide.

[0038] 4. Design and control the protective shell mold that matches the size of the mainboard, and use polycarbonate (PC) injection molding process to produce the protective shell. Requirements: A switch interface 14 is provided on the left side of the protective shell; a vacuum pump interface 11 is provided on the right side, and the vacuum pump interface 11 is connected to the internal vacuum pump; a DC charging interface is also provided on the right side of the protective shell.

[0039] An observation window matching the LCD screen is arranged on the front of the protective shell, and function keys are arranged below the observation window. The function keys include a power on / off key and a negative pressure value setting key.

[0040] A gravity sensor installation position is provided at the bottom of the protective shell, and a gravity sensor suspension member 12 is provided below the gravity sensor sensing port.

[0041] 5. Install and fix all components in the protective casing, start the machine for testing, and ensure they pass the test.

[0042] Example 2 Preparation of a drainage material for females 1. If Figure 3 As shown, a plastic injection mold for the anti-leakage shell 20 is designed and developed, and the applicable material is medical silicone rubber. In order to improve the integration of components, the suction chamber 22 is integrally formed with the anti-leakage shell 20, and the overall shape of the anti-leakage shell 20 is an inverted pear shape. The suction chamber 22 is arranged at the bottom of the anti-leakage shell 20, and the bottom of the suction chamber 22 is provided with a drainage port 23 and an installation position for an automatic trigger switch.

[0043] 2. Design and develop the extrusion molds for the drainage tube 27 and the negative pressure tube 31. The applicable material is medical soft polyvinyl chloride (PVC). The drainage tube 27 has an inner diameter of 6 mm and an outer diameter of 8 mm. It is produced by extrusion and cut into sections of 900 mm. The negative pressure tube 31 has an inner diameter of 2 mm and an outer diameter of 3.5 mm. It is produced by extrusion and cut into sections of 200 mm.

[0044] 3. Prepare a blow mold for the negative pressure drainage bottle 33, the applicable material is polyethylene terephthalate (PET), and the internal volume is 400 ml. The left side of the negative pressure drainage bottle 33 is provided with a liquid inlet 29, the upper part of the negative pressure drainage bottle 33 is provided with a negative pressure interface 30, and the bottom of the negative pressure drainage bottle 33 is provided with a diversion hole connected to the urine collection bag 34.

[0045] 4. The urine collecting bag 34 is produced by high-frequency heat-sealing process of soft polyethylene film, and has a capacity of 2000 ml. An interface for connecting with the negative pressure drainage bottle 33 is arranged on the top of the urine collecting bag 34, and a urination switch 36 is arranged on the bottom of the urine collecting bag 34.

[0046] 5. The negative pressure drainage bottle 33 and the urine collecting bag 34 are combined by means of an adapter or a catheter. An anti-backflow diaphragm 35 is provided at the combination of the negative pressure drainage bottle 33 and the urine collecting bag 34. The anti-backflow diaphragm 35 is a silicone diaphragm.

[0047] 6. The adsorption material 21 is made of polyurethane sponge and is cut by die stamping according to the internal shape of the anti-leakage shell 20. The adsorption material 21 is required to be fitted inside the anti-leakage shell 20 and not easy to fall out.

[0048] 7. If Figure 4 As shown, an injection mold for an automatic trigger switch chassis is prepared, and medical polypropylene (PP) is used as the applicable material.

[0049] The chassis is circular, 3mm thick, 9mm in outer diameter, with a 3.5mm diameter urine diversion hole in the middle of the chassis. There are circular electrode mounting holes with a diameter of 1.5mm on the left and right sides of the chassis, and the electrode mounting holes are close to the inside of the urine diversion hole.

[0050] A copper wire with an outer diameter of 1.5 mm is used, cut into small sections with a length of 6 mm, and a metal part inlay injection molding process is used to injection mold the positive electrode 24 and the negative electrode of the automatic trigger switch and the chassis.

[0051] A two-core extension wire 26 is used, and the heads of the extension wire 26 are respectively welded to the positive electrode 24 and the negative electrode of the automatic trigger switch, and the ends of the extension wire 26 are welded to the device connection terminal 37 and combined.

[0052] 8. If Figure 3 As shown in the structure, the automatic trigger switch is installed at the junction of the anti-leakage shell 20 and the suction chamber 22, and the extension wire 26 is led out and sealed with glue.

[0053] 9. Use the bonding process of medical polymer materials to assemble the components. The tensile strength of the bonding part should not be less than 10N. Check the airtightness of the connection parts. There should be no leakage. After passing the test, package and keep it for use.

[0054] 10. Based on the characteristics of the special drainage material, the applicable drainage negative pressure value shall be marked on the product outer packaging.

[0055] Based on the difference in air tightness caused by the different structures of men and women, as well as the influencing factors of the length of the drainage tube 27 and the volume of the negative pressure drainage container 28, different specifications of special drainage materials require different drainage negative pressure values. A special drainage material has a drainage negative pressure value between -20cmH20 and -100cmH20. According to the requirements of the negative pressure value applicable to the selected special drainage material, the working negative pressure is set in the human-machine interface of the urine drainage device 10.

[0056] Example 3 Application of a urine drainage device 10 and a drainage material for men 1. If Figure 2 As shown, the negative pressure drainage container 28 is vertically suspended on the gravity sensor hanging member 12 below the urine drainage device 10 .

[0057] 2. Insert the device connection terminal 37 of the automatic trigger switch into the switch interface 14 on the left side of the urine drainage device 10 , and connect the tapered joint of the negative pressure tube 31 to the vacuum pump interface 11 on the right side of the urine drainage device 10 .

[0058] 3. After fixing the wearable urine collector on the periphery of the patient's urethra, turn on the urine drainage device 10, set the drainage negative pressure value to -40 cmH2O in the human-computer interaction interface, and the urine drainage device 10 enters the working standby state.

[0059] 4. During the standby period, if the patient discharges urine, the adsorbent material 21 quickly absorbs the urine and guides it to the suction chamber 22. When urine flows through the automatic trigger switch, the positive electrode 24 and the negative electrode of the automatic trigger switch are connected by urine, and the core processor instructs the vacuum pump to start working, and negatively pressure-attracts the urine discharged by the patient into the negative pressure drainage container 28. During this period, the pressure sensor dynamically monitors the negative pressure value in the negative pressure drainage container 28 or the drainage tube 27 and feeds it back to the core processor. According to the change of the negative pressure value, the core processor instructs the vacuum pump to dynamically correct the working pressure so that the negative pressure value is stably maintained within the set drainage negative pressure value range.

[0060] 5. After the patient stops urinating, the positive electrode 24 and the negative electrode of the automatic trigger switch return to the disconnected state, and the vacuum pump stops working, and this process is repeated.

[0061] Preferably, in order to facilitate the urine in the adsorbent material 21 to continue to be sucked into the negative pressure drainage container 28, the adsorbent material 21 is kept dry. After the patient stops urinating and the positive electrode 24 and the negative electrode of the automatic trigger switch are disconnected, the vacuum pump continues to work for 3-5 minutes.

[0062] 6. After the vacuum pump stops working, the gravity sensor measures the urine volume discharged by the patient and the total amount of urine in the negative pressure drainage container 28, and displays the urine volume data and urination time on the human-computer interaction interface, and sends it to the customer's monitoring terminal at the same time. If abnormal conditions such as oliguria or polyuria occur, or the urine volume in the negative pressure drainage container 28 exceeds 1600 ml, a warning or prompt message will be given.

[0063] The above drawings and embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention and does not constitute any limitation on the scope of protection of the present invention.

Claims

1. A fast and automatic response urine drainage device and a special drainage material, characterized in that: The urine drainage device 10 and the special drainage material are two relatively independent units and need to be used in combination; the control method for quickly and automatically responding to cleaning the patient's urine is: using a closed-loop feedback control circuit including an automatic trigger switch, a core processor and a vacuum pump; wherein the positive electrode 24 of the automatic trigger switch is connected to one of the pins of the core processor, and the negative electrode is connected to the D line in the control motherboard, and the vacuum pump is controlled by the core processor; the start or stop of the vacuum pump is automatically feedback controlled by the feedback control circuit; when the urine drainage device 10 is in standby or dormant state, the core processor loads a stable current to the positive electrode 24 of the automatic trigger switch, and dynamically monitors the voltage value of the negative electrode connected to the D line; when the patient starts to urinate, the adsorption material 21 around the urethral opening absorbs the urine The urine enters and is directed into the anti-leakage housing 20, flowing through the automatic trigger switch; based on the good conductivity of urine, the positive electrode 24 and the negative electrode of the automatic trigger switch are connected by urine, and the core processor detects that the voltage at the D-line terminal where the negative electrode is located has a significant voltage increase compared to the initial voltage, and the core processor immediately starts the vacuum pump automatically, and the vacuum pump works according to the preset negative pressure value; during this period, the pressure sensor dynamically monitors the negative pressure value in the negative pressure drainage container 28 or the drainage tube 27, and feeds back to the core processor to realize dynamic adjustment of the negative pressure output by the vacuum pump; after the urine inside the anti-leakage housing 20 is sucked and emptied by the negative pressure, the positive electrode 24 and the negative electrode of the automatic trigger switch are restored to the disconnected state, the voltage at the D-line terminal is restored to the initial state, and the vacuum pump automatically stops working or stops working with a delay.

2. The fast and automatic response urine drainage device according to claim 1 mainly comprises a control mainboard, a vacuum pump, a pressure sensor, a gravity sensor, a communication module and a human-computer interaction interface; characterized in that: A physical interface combined with a special drainage material is provided on the periphery, and the physical interface includes a hanging part for hanging the negative pressure drainage container 28, and the hanging part is arranged below the gravity sensor; includes a switch interface 14 for connecting an automatic trigger switch, and the switch interface 14 is arranged on the periphery of the control main board; includes a negative pressure interface 30 connected to the negative pressure drainage container 28 or the drainage tube 27, and the negative pressure interface 30 is connected to the negative pressure air circuit interface of the vacuum pump; also includes a pressure measuring interface connected to the negative pressure drainage container 28 or the drainage tube 27, and the pressure measuring interface is connected to the pressure measuring port of the pressure sensor.

3. A special drainage material, comprising a wearable urine collector, an automatic trigger switch, a drainage tube 27 and a negative pressure drainage container 28; characterized in that: The adsorption material 21 is arranged on the inner side of the anti-leakage shell 20, and the suction chamber 22 is arranged at the downstream position of the anti-leakage shell 20. The suction chamber 22 is combined with the adsorption material 21 to gather the urine dynamically collected by the adsorption material 21 into the suction chamber 22; the automatic trigger switch is arranged inside the anti-leakage shell 20, and should be arranged at a position where urine must flow through; the head end of the drainage tube 27 is connected to the suction chamber 22, and the end of the drainage tube 27 is connected to the inner cavity of the negative pressure drainage container 28.

4. A special drainage material according to claim 3, characterized in that: The automatic trigger switch is composed of a positive electrode sheet, a negative electrode sheet and a two-core extension wire 26. The positive electrode sheet and the negative electrode sheet must not be short-circuited or touch each other. The tails of the positive electrode sheet and the negative electrode sheet are respectively connected to one end of the extension wire 26.

5. A special drainage material according to claim 3, characterized in that: The positive electrode sheet and the negative electrode sheet are arranged in the guide groove inside the adsorption material 21, or the positive electrode sheet and the negative electrode sheet are arranged in the suction chamber 22, and the extension wires 26 of the positive electrode sheet and the negative electrode sheet are connected to the device connection terminal 37, and the device connection terminal 37 communicates with the urine drainage device 10.

6. A special drainage material according to claim 3, characterized in that: The two exposed metal cores at the head end of the extension wire 26 are used as the positive pole 24 and the negative pole of the automatic trigger switch. The two metal cores of the extension wire 26 are arranged in the air, and the end of the extension wire 26 is provided with a device connection terminal 37.

7. A special drainage material according to claim 3, characterized in that: A limiting device is provided between the positive electrode 24 and the negative electrode of the automatic trigger switch, and the positive electrode and the negative electrode are respectively fixed in the limiting groove or the limiting hole.

8. The special drainage material according to claim 3, characterized in that: The adsorption material 21 adopts a composite structure, the surface layer in contact with the urethral opening is made of medical non-woven fabric, and the inner layer is made of sponge or chemical fiber cotton. The sponge or chemical fiber cotton is provided with a guide hole or a guide groove inside.

9. A special drainage material according to claim 3, characterized in that: The negative pressure drainage container 28 is provided with a liquid inlet 29, a negative pressure interface 30 and a urination switch 36; wherein, the liquid inlet 29 and the negative pressure interface 30 are respectively arranged above the negative pressure drainage container 28, the liquid inlet 29 is connected with the end of the drainage tube 27, the negative pressure interface 30 is connected with the negative pressure port of the urine drainage device 10 by a negative pressure tube 31, and the urination switch 36 is arranged at the bottom of the negative pressure drainage container 28.

10. A special drainage material according to claim 3, characterized in that: The negative pressure drainage container 28 adopts a combined structure of a negative pressure drainage bottle 33 and a urine collecting bag 34. The negative pressure drainage bottle 33 is arranged at the upstream position of the urine collecting bag 34. The liquid inlet 29 and the negative pressure interface 30 are respectively arranged above the negative pressure drainage bottle 33. The negative pressure drainage bottle 33 and the urine collecting bag 34 are combined by an adapter or a catheter. An anti-backflow diaphragm 35 is provided at the combination of the negative pressure drainage bottle 33 and the urine collecting bag 34.

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