Constant temperature and pressure cleaning and nursing device for urinary system nursing

Abstract

The application relates to the technical field of medical care, and discloses a constant-temperature and constant-pressure cleaning nursing device for urinary system nursing, which comprises a device shell, an injection cylinder, a piston plate, a liquid inlet pipe, a conveying pipe, a heater and a driving assembly. The injection cylinder is divided into a heating chamber and a mixing chamber by the piston plate, and in cooperation with the first liquid inlet pipe, the second liquid inlet pipe, the conveying pipe and the triple one-way valve, the nursing liquid can be inhaled, preheated, accurately heated and dynamically mixed; the driving assembly drives the straight gear and the rack transmission through the motor, controls the reciprocating movement of the piston plate, accurately adjusts the flushing amount and the pressure, and the temperature of the mixing chamber is monitored in real time by the temperature and pressure sensor, so that the problems of large temperature fluctuation, large flushing amount error and low mixing efficiency in traditional gravity infusion are solved, constant-temperature and constant-pressure flushing is realized, and the device is suitable for clinical bladder nursing and postoperative catheter maintenance.

Description

Technical Field

[0001] This invention relates to the field of medical and nursing technology, and in particular to a constant temperature and pressure cleaning and nursing device for urinary system care. Background Technology

[0002] Currently, in clinical bladder irrigation procedures, mainstream gravity infusion techniques generally suffer from a lack of or inadequate temperature control: in most cases, room-temperature saline is directly injected into the bladder, and the low-temperature stimulation can easily cause bladder spasms in patients; some preheat the solution using common methods such as heating bags or water baths, but the static heating results in a large temperature difference in the solution, and it takes a long time to heat 500ml of solution from room temperature to 37°C, which cannot meet the temperature control requirements of emergency irrigation. In addition, traditional gravity infusion relies on the suspension height of the infusion bottle to adjust the flow rate, but it is difficult to accurately control the volume of a single flush: the normal capacity of an adult bladder is about 300-500ml, and the error in the volume of a single flush during gravity infusion is large, which can easily lead to overfilling of the bladder or incomplete flushing. Although existing improvement solutions have added a manual piston valve to control the flow rate, they lack temperature control and still cannot solve the dual technical pain points of temperature fluctuation and volume loss control. Summary of the Invention

[0003] The technical problem to be solved by the present invention is that the existing bladder irrigation technology has the defects of temperature fluctuation and volume loss control. To this end, we propose a constant temperature and constant pressure cleaning and nursing device for urinary system care.

[0004] To achieve the above objectives, this application adopts the following technical solution: a constant temperature and pressure cleaning and nursing device for urinary system care, comprising a device housing and an injection cylinder disposed inside the device housing. The injection cylinder has an internal cavity, within which a piston plate is slidably disposed. Sliding rods pass through both ends of the piston plate and extend to the outside of the injection cylinder. A second inlet pipe and a delivery pipe are respectively installed on both sides of the injection cylinder, communicating with the internal cavity of the injection cylinder. A second one-way valve and a third one-way valve are respectively installed on the second inlet pipe and the delivery pipe. A heating element is disposed outside the injection cylinder. The device includes a syringe with a connecting tube installed above it. Both ends of the connecting tube connect to the internal cavity of the syringe from opposite sides. A first one-way valve is installed on the connecting tube. A piston plate divides the internal cavity of the syringe into two variable spaces: a mixing chamber and a heating chamber. The first one-way valve prevents the nursing solution inside the mixing chamber from flowing into the heating chamber through the connecting tube. A second one-way valve prevents the nursing solution inside the heating chamber from flowing back through the second inlet tube. The other end of the delivery tube connects to a three-lumen catheter. A third one-way valve prevents the nursing solution from flowing back from the catheter into the mixing chamber. The device casing... The internal structure also includes a drive assembly for reciprocating the piston plate within the cavity of the syringe barrel. When the drive assembly moves the piston plate within the cavity, initially, the piston plate slides from the side of the syringe barrel closest to the second inlet pipe towards the side of the syringe barrel closest to the delivery pipe, increasing the heating chamber space. The nursing solution is then drawn into the heating chamber through the second inlet pipe until the heating chamber reaches its maximum size. After heating is complete, the piston plate slides from the side of the syringe barrel closest to the delivery pipe towards the side of the syringe barrel closest to the second inlet pipe, opening the mixing chamber. The internal space of the heating chamber increases, while the internal space of the liquid is compressed. Due to the incompressibility of the liquid and the second one-way valve preventing the reverse flow of the nursing solution, the nursing solution inside the heating chamber enters the mixing chamber through the connecting tube. During the flow of the nursing solution, disturbance occurs, causing it to mix. After all the nursing solution has entered the mixing chamber, the piston plate moves again towards the delivery tube. The mixed nursing solution enters the bladder through the delivery tube and the three-lumen catheter. During this process, the internal space of the heating chamber increases, and new nursing solution continues to be drawn in through the second inlet tube for heating.

[0005] Preferably, a movable frame is provided at the bottom of the equipment casing, which allows the entire equipment to be moved. A storage tank and a waste liquid tank are suspended on the outside of the movable frame. The storage tank is used to store the nursing solution to be heated and used, and the waste liquid tank is connected to the discharge pipe of the three-lumen catheter to collect the waste liquid after use.

[0006] Preferably, a preheater is provided inside the equipment housing outside the heater. The preheater is annular and has an annular preheating chamber inside.

[0007] Preferably, the end of the second inlet pipe away from the syringe is connected to the lower part of the preheating chamber.

[0008] Preferably, a first liquid inlet pipe is also provided inside the equipment housing. One end of the first liquid inlet pipe is connected to the upper part of the preheating chamber, and the other end of the first liquid inlet pipe extends to the outside of the equipment housing and into the interior of the liquid storage tank.

[0009] Preferably, a temperature and pressure sensor is installed on the outside of the syringe near the delivery tube, and the temperature and pressure sensor extends into the inside of the syringe. The temperature and pressure sensor is used to monitor the temperature of the nursing solution inside the mixing chamber in real time.

[0010] Preferably, a sealing ring is provided at the sliding point between the inside of the syringe and the sliding rod, the sealing ring being used to maintain the seal inside the syringe.

[0011] Preferably, the drive assembly includes a surrounding closed guide frame, with a protrusion at the top center of the guide frame and a guide rail located at the bottom inside the guide frame.

[0012] Preferably, baffles are installed at the front and rear of the guide frame, a rack is slidably connected to the top of the guide rail, and slide rods are fixedly installed on both sides of the rack. One end of the outer side of the two sets of slide rods is connected to the slide rods through a connecting rod.

[0013] Preferably, the drive assembly also includes a motor fixedly mounted on the outer wall of the baffle behind the guide frame. The output end of the motor extends to the inner side of the protrusion and is fixedly connected to a spur gear. The spur gear meshes with the teeth on the surface of the rack. The motor drives the spur gear to rotate, and the spur gear meshes with the rack, thereby driving the rack to move. In turn, the piston plate moves within the cavity inside the syringe barrel through the slide rod, connecting rod, and sliding rod. The motor can control the direction, speed, and range of movement of the piston plate, thereby controlling the mixing, delivery speed, and delivery volume of the nursing solution.

[0014] The technical effects and advantages of this invention are as follows: In this invention, the syringe is divided into a heating chamber and a mixing chamber by a piston plate. With the help of a one-way valve and a connecting pipe, the nursing solution is aspirated, heated, mixed and delivered at constant pressure. The drive component controls the reciprocating motion of the piston plate to precisely adjust the flow rate. This device solves the problems of large temperature fluctuations and inaccurate volume control in traditional flushing. It can achieve constant temperature heating, constant pressure delivery and dynamic mixing of the nursing solution, and is suitable for clinical urological care. Attached Figure Description

[0015] The disclosure of this invention is illustrated with reference to the accompanying drawings. It should be understood that the drawings are for illustrative purposes only and are not intended to limit the scope of protection of this invention. In the drawings, the same reference numerals are used to refer to the same parts: Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial structural schematic diagram of the present invention; Figure 3 This is a schematic diagram of the structure of the injection cylinder, piston plate, heater, preheater and drive assembly of the present invention; Figure 4 This is a cross-sectional view of the injection cylinder, piston plate, heater, preheater, and drive assembly of the present invention. Figure 5 This is a schematic diagram of the structure of the injection cylinder, piston plate, and drive assembly of the present invention; Figure 6 This is a schematic diagram of the piston plate and drive assembly structure of the present invention; Figure 7 This is an exploded view of the drive component structure of the present invention.

[0016] Legend: 1. Moving frame; 2. Storage tank; 3. Waste tank; 4. Equipment casing; 5. Injector; 51. Mixing chamber; 52. Heating chamber; 53. Sealing ring; 54. Connecting pipe; 541. First check valve; 55. First inlet pipe; 56. Second inlet pipe; 561. Second check valve; 57. Delivery pipe; 571. Third check valve; 58. Temperature and pressure sensor; 6. Piston plate; 61. Sliding rod; 7. Heater; 8. Preheater; 81. Preheating chamber; 9. Drive assembly; 91. Guide frame; 911. Protrusion; 912. Guide rail; 92. Baffle; 93. Rack; 94. Sliding rod; 95. Connecting rod; 96. Motor; 97. Spur gear. Detailed Implementation

[0017] It is readily understood that, based on the technical solution of this invention, those skilled in the art can propose various interchangeable structural methods and implementations without altering the essential spirit of the invention. Therefore, the following detailed embodiments and accompanying drawings are merely illustrative examples of the technical solution of this invention and should not be considered as the entirety of the invention or as limitations or restrictions on the technical solution of this invention.

[0018] Reference Figures 1-7 As shown, the present invention provides a technical solution: a constant temperature and pressure cleaning and nursing device for urinary system care, such as... Figures 1-4 As shown, the device includes a housing 4 and an injection cylinder 5 disposed inside the housing 4. The injection cylinder 5 is made of 316L stainless steel tubing. The injection cylinder 5 has a cavity inside, and a piston plate 6 is slidably disposed in the cavity. The piston plate 6 is made of PTFE material with a surface roughness Ra=0.2μm and has a silicone rubber sealing ring embedded at its edge. The piston plate 6 is passed through and extended to the outside of the injection cylinder 5 by sliding rods 61 at both ends. The sliding rods 61 are chrome-plated with a hardness ≥60HRC. A double-layer sealing ring 53 made of fluororubber is provided at the connection with the injection cylinder 5.

[0019] A second inlet pipe 56 and a delivery pipe 57 are respectively installed on both sides of the syringe 5. The second inlet pipe 56 and the delivery pipe 57 are connected to the internal cavity of the syringe 5. A second one-way valve 561 and a third one-way valve 571 are respectively installed on the second inlet pipe 56 and the delivery pipe 57. A heater 7 is installed on the outside of the syringe 5. A connecting pipe 54 is also installed on the top of the syringe 5. The two ends of the connecting pipe 54 are connected to the internal cavity of the syringe 5 from both sides. A first one-way valve 541 is installed on the connecting pipe 54. The piston plate 6 divides the internal cavity of the syringe 5 into a mixing chamber. The device has two variable spaces, 51 and 52. A first one-way valve 541 is used to prevent the nursing fluid inside the mixing chamber 51 from flowing into the heating chamber 52 through the connecting pipe 54. A second one-way valve 561 is used to prevent the nursing fluid inside the heating chamber 52 from flowing back through the second inlet pipe 56. The other end of the delivery pipe 57 is connected to a three-lumen catheter. A third one-way valve 571 is used to prevent the nursing fluid from flowing back from the catheter into the mixing chamber 51. The device housing 4 is also equipped with a drive assembly 9 for driving the piston plate 6 to slide back and forth in the cavity inside the syringe 5.

[0020] When the driving assembly 9 drives the piston plate 6 to slide within the cavity of the syringe 5, initially, the piston plate 6 slides from the side of the syringe 5 closest to the second inlet pipe 56 towards the side of the syringe 5 closest to the delivery pipe 57, increasing the space in the heating chamber 52. The nursing solution is then drawn into the heating chamber 52 through the second inlet pipe 56 until the heating chamber 52 reaches its maximum space. After heating is complete, the piston plate 6 slides from the side of the syringe 5 closest to the delivery pipe 57 towards the side of the syringe 5 closest to the second inlet pipe 56, increasing the space inside the mixing chamber 51 and the heating chamber 52... The internal space is compressed. Due to the incompressibility of the liquid and the obstruction of the reverse flow of the nursing solution by the second one-way valve 561, the nursing solution inside the heating chamber 52 enters the mixing chamber 51 through the connecting pipe 54. During the flow of the nursing solution, disturbance occurs, causing it to mix. After all the nursing solution has entered the mixing chamber 51, the piston plate 6 moves again towards the side closer to the delivery pipe 57. The mixed nursing solution enters the bladder through the delivery pipe 57 and the three-lumen catheter. During this process, the internal space of the heating chamber 52 increases, and new nursing solution continues to be drawn in through the second inlet pipe 56 for heating.

[0021] like Figure 1 As shown, a movable frame 1 is provided below the outer casing 4 of the equipment. The bottom of the movable frame 1 is equipped with casters with a diameter of 100mm and a load-bearing capacity of ≥25kg. The liquid storage tank 2 and the waste liquid tank 3 are suspended on both sides of the movable frame 1 by hooks 12. The volume of the liquid storage tank 2 is 2L and the volume of the waste liquid tank 3 is 3L. The tank body is made of transparent PC material with a wall thickness of 3mm.

[0022] like Figure 4As shown, a preheater 8 is installed inside the housing 4 outside the heater 7. The preheater 8 is arranged in a ring around the outside of the heater 7 and is made of aluminum alloy.

[0023] The end of the second inlet pipe 56 furthest from the syringe 5 is connected to the lower part of the preheating chamber 81.

[0024] The equipment housing 4 is also equipped with a first liquid inlet pipe 55. The first liquid inlet pipe 55 is a silicone tube with an inner diameter of 6mm and a wall thickness of 1.5mm. One end is connected to the top of the preheating chamber 81 through a threaded connector 551, and the other end is inserted into the bottom of the liquid storage tank 2. The second liquid inlet pipe 56 is a silicone tube of the same specification.

[0025] like Figure 4 As shown, a temperature and pressure sensor 58 is installed on the outside of the syringe 5 near the delivery pipe 57. The temperature and pressure sensor 58 is an integrated temperature and pressure sensor. Its detection end extends into the mixing chamber 51 and is close to the connection position of the delivery pipe 57. It is used to detect the temperature of the nursing solution in the mixing chamber 51 in real time and to detect the pressure on the output side when the nursing solution is output through the delivery pipe 57. The temperature and pressure sensor 58 is connected to the controller of the equipment. The controller controls the working state of the heater 7 according to the detected temperature and adjusts the running state of the motor 96 according to the detected pressure.

[0026] like Figures 6-7 As shown, the drive assembly 9 includes a surrounding closed guide frame 91. A protrusion 911 is provided in the middle of the top of the guide frame 91. A guide rail 912 is provided in the lower part of the interior of the guide frame 91. The guide frame 91 is made of Q235 steel plate by bending and welding, with a thickness of 5mm. It is rectangular ring in shape, with an inner width of 120mm and an inner height of 80mm. The protrusion 911 is semi-circular with a radius of 30mm and is integrally formed with the guide frame 91. The guide rail 912 is a linear guide rail.

[0027] A baffle 92 is installed at the front and rear of the guide frame 91. A rack 93 is slidably connected to the top of the guide rail 912. Slide rods 94 are fixedly installed on both sides of the rack 93. One end of the outer side of the two sets of slide rods 94 is connected to the slide rod 61 through the connecting rod 95. The drive assembly 9 also includes a motor 96 fixedly installed on the outer wall of the baffle 92 behind the guide frame 91. The output end of the motor 96 extends to the inner side of the protrusion 911 and is fixedly connected to a spur gear 97. The spur gear 97 meshes with the teeth on the surface of the rack 93. The motor 96 drives the spur gear 97 to rotate. The spur gear 97 meshes with the rack 93 and thus drives the rack 93 to move. In turn, the slide rods 94, the connecting rod 95 and the slide rod 61 drive the piston plate 6 to move in the cavity inside the syringe 5. The motor 96 can control the moving direction, moving speed and moving range of the piston plate 6, thereby controlling the mixing, delivery speed and delivery volume of the nursing solution.

[0028] Working principle: The motor 96 drives the spur gear 97 to rotate clockwise, which drives the rack 93 to move to the left along the guide rail 912. Through the slide rod 94, connecting rod 95 and sliding rod 61, the piston plate 6 moves from the end near the second inlet pipe 56 to the delivery pipe 57. At this time, the second one-way valve 561 opens, and the nursing solution enters the preheating chamber 81 from the storage tank 2 through the first inlet pipe 55, and then enters the heating chamber 52 through the second inlet pipe 56. The motor 96 stops, completing one suction process with an suction volume of about 100ml. Heater 7 heats the nursing solution in heating chamber 52. Motor 96 drives spur gear 97 to rotate counterclockwise, causing piston plate 6 to move towards the end of second inlet pipe 56. At this time, second check valve 561 is closed and first check valve 541 is opened. Nursing solution flows from heating chamber 52 into mixing chamber 51 through connecting pipe 54. Nursing solution is mixed during entry. Then, temperature and pressure sensor 58 detects the temperature of nursing solution. Controller controls the working state of heater 7 according to the detected temperature to keep the temperature of nursing solution within the preset temperature range. Subsequently, motor 96 drives spur gear 97 to rotate clockwise again, and piston plate 6 moves towards the end of delivery pipe 57. At this time, the first one-way valve 541 closes and the third one-way valve 571 opens. The uniformly mixed nursing solution enters the three-lumen catheter through delivery pipe 57. During this process, the nursing solution in preheating chamber 81 is drawn into heating chamber 52. As the nursing solution is output through delivery pipe 57, temperature and pressure sensor 58 simultaneously detects the nursing solution pressure on the side of mixing chamber 51 near delivery pipe 57 and feeds the detection result back to controller. Controller adjusts the operating state of motor 96 according to the detected pressure. When the detected pressure is higher than the preset pressure range, the output of motor 96 is reduced; when the detected pressure is lower than the preset pressure range, the output of motor 96 is increased, so as to adjust the pushing action of piston plate 6 on nursing solution accordingly, so that the output pressure of nursing solution is maintained within the preset pressure range.

[0029] The technical scope of this invention is not limited to the content described above. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this invention, and all such modifications and variations should fall within the protection scope of this invention.

Claims

1. A constant temperature and pressure cleaning and nursing device for urinary system care, characterized in that, The device includes a housing and an injection cylinder housed inside the housing. The injection cylinder has an internal cavity, within which a piston plate is slidably mounted. Sliding rods extend from both ends of the piston plate to the outside of the injection cylinder. A second inlet pipe and a delivery pipe are respectively installed on both sides of the injection cylinder, communicating with the internal cavity. A second one-way valve and a third one-way valve are respectively installed on the second inlet pipe and the delivery pipe. A heater is installed outside the injection cylinder. A connecting pipe is also installed above the injection cylinder, with both ends connecting to the internal cavity from both sides of the injection cylinder. The device is connected to a connecting pipe equipped with a first one-way valve. The piston plate divides the internal cavity of the syringe into two variable spaces: a mixing chamber and a heating chamber. The first one-way valve prevents the nursing solution inside the mixing chamber from flowing into the heating chamber through the connecting pipe. The second one-way valve prevents the nursing solution inside the heating chamber from flowing back through the second inlet pipe. The other end of the delivery pipe is connected to a three-lumen catheter. The third one-way valve prevents the nursing solution from flowing back from the catheter into the mixing chamber. The device housing is also equipped with a drive assembly for driving the piston plate to slide back and forth within the internal cavity of the syringe.

2. The constant temperature and pressure cleaning and nursing device for urinary system care according to claim 1, characterized in that: A movable frame is provided below the outer casing of the device, which allows the entire device to be moved. A storage tank and a waste liquid tank are suspended on the outside of the movable frame. The storage tank is used to store the nursing solution to be heated before use, and the waste liquid tank is connected to the discharge pipe of the three-lumen catheter to collect the waste liquid after use.

3. The constant temperature and pressure cleaning and nursing device for urinary system care according to claim 2, characterized in that: The preheater is located inside the housing of the device, outside the heater. The preheater is annular and has an annular preheating chamber inside.

4. A constant temperature and pressure cleaning and nursing device for urinary system care according to claim 3, characterized in that: The end of the second inlet tube furthest from the syringe is connected to the lower part of the preheating chamber.

5. A constant temperature and pressure cleaning and nursing device for urinary system care according to claim 4, characterized in that: The equipment housing is also provided with a first liquid inlet pipe. One end of the first liquid inlet pipe is connected to the upper part of the preheating chamber, and the other end of the first liquid inlet pipe extends to the outside of the equipment housing and into the inside of the liquid storage tank.

6. A constant temperature and pressure cleaning and nursing device for urinary system care according to claim 1, characterized in that: A temperature and pressure sensor is installed on the outside of the syringe near the delivery tube. The temperature and pressure sensor extends into the inside of the syringe and is used to monitor the temperature of the nursing solution inside the mixing chamber in real time.

7. A constant temperature and pressure cleaning and nursing device for urinary system care according to claim 1, characterized in that: A sealing ring is provided inside the syringe where it slides against the sliding rod. The sealing ring is used to maintain the seal inside the syringe.

8. A constant temperature and pressure cleaning and nursing device for urinary system care according to claim 1, characterized in that: The drive assembly includes a surrounding closed guide frame with a protrusion at the top center and a guide rail located at the bottom inside the guide frame.

9. A constant temperature and pressure cleaning and nursing device for urinary system care according to claim 8, characterized in that: The guide frame is equipped with baffles at the front and rear, and a rack is slidably connected to the top of the guide rail. Slide rods are fixedly installed on both sides of the rack, and one end of each set of slide rods is connected to the slide rods via a connecting rod.

10. A constant temperature and pressure cleaning and nursing device for urinary system care according to claim 9, characterized in that: The drive assembly also includes a motor fixedly installed behind the guide frame on the outer wall of the baffle. The output end of the motor extends to the inner side of the protrusion and is fixedly connected to a spur gear, which meshes with the teeth on the surface of the rack.

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