Disposable heater and endoscope flusher with heating function

Abstract

The utility model belongs to the technical field of endoscopes, and particularly relates to a disposable heater and an endoscope flusher with a heating function, an electric heating rod, a heat exchange tube and a temperature sensor are arranged in a shell in a sealing manner, a heat-conducting medium is filled in the shell, and the electric heating rod is utilized to perform efficient heating, so that the heat exchange tube and the temperature sensor are not damaged. And the liquid in the heat exchange tube is uniformly heated through the heat-conducting medium. Due to the fact that the shell is arranged in a sealed mode, loss of heat in the shell can be avoided, a certain heat preservation effect is achieved, the temperature in the shell is detected in real time through the temperature sensor, the heating temperature of the electric heating rod can be adjusted conveniently, it is guaranteed that the temperature of liquid in the heat exchange pipe is kept within a reasonable range after heating, and disinfection is convenient. The disposable heater is simple in structure, low in manufacturing cost and suitable for being used as a disposable medical product.

Description

Technical Field

[0001] The utility model belongs to the technical field of endoscopes, and in particular relates to a disposable heater and an endoscope flusher with a heating function. Background Art

[0002] An endoscope is a tube with a light source that enters the body through natural cavities or small incisions during minimally invasive surgery to help doctors diagnose diseases or assist in surgery. As clinical surgery enters the era of minimally invasive diagnosis and treatment, endoscopes have become the most important surgical equipment for minimally invasive diagnosis and treatment.

[0003] The endoscopic water delivery device is an auxiliary device used in conjunction with endoscopic examination and treatment. It delivers water into the body, lumen, body cavity or body cavity to flush the tissue to remove blood, excrement and other organic matter, so as to improve the visibility of diagnosis and treatment during endoscopic diagnosis and treatment.

[0004] The endoscopic water delivery devices currently used in clinical practice all use the peristaltic pump to pressurize and deliver sterile liquid into the endoscope to complete the cleaning of the wound. Since the endoscopic water delivery device does not have a heating function, in some surgeries, the injected sterile liquid needs to be close to the patient's body temperature. Liquid at room temperature will cause muscle contraction, which is not conducive to the operation. In order to avoid the above problems, the sterile liquid needs to be heated in a water bath in advance during clinical surgery and then pumped in through the endoscopic water delivery device. The starting temperature of the hot water used in the water bath is difficult to control. As the water temperature drops, the temperature of the sterile liquid also fluctuates violently, which is not friendly to the operation.

[0005] Chinese patent document CN208552670U (201720850770.4) discloses a novel temperature-controlled medical irrigation pump system. By combining a medical irrigation pump with a heating chamber and a constant-temperature heating control unit, the system provides stable and rapid irrigation fluid delivery and convenient heating. However, the heating plate suffers from slow heating speed and high manufacturing costs. Utility Model Content

[0006] The purpose of the utility model is to provide a disposable heater and an endoscope flusher with a heating function, and to design an endoscope water supply device with heating management and matching water supply accessories to achieve constant temperature control of the liquid used for flushing in clinical surgery. Since the disposable heater has a simple overall structure and low manufacturing cost, it can be used as a disposable consumable, ensuring safety during surgery and avoiding cross infection.

[0007] The technical problem to be solved by the utility model is achieved by adopting the following technical solution: a disposable heater, comprising a shell, an electric heating rod, a heat exchange tube and a temperature sensor;

[0008] The electric heating rod, heat exchange tube and temperature sensor are sealed in a shell, and the shell is filled with a heat-conducting medium;

[0009] The shell is provided with a plug connector connected to the inlet and outlet of the heat exchange tube, and the shell is provided with a line connector connected to the electric heating rod and the temperature sensor;

[0010] The temperature sensor is used to detect the temperature inside the housing.

[0011] In the present invention, the electric heating rod is preferably in the form of a straight tube, and the heat exchange tube is wound around the outside of the electric heating rod. Wrapping the heat exchange tube around the outside of the straight tube-shaped electric heating rod can achieve sufficient heat exchange between the heat exchange tube and the electric heating rod and can reduce the overall size of the heater.

[0012] In the present invention, the electric heating rod and the heat exchange tube are preferably coil-shaped and intertwined. Since the electric heating rod and the heat exchange tube are both spiral-shaped and intertwined, the heating area of ​​the heating rod can be increased, and heat exchange can be more uniformly achieved, which is more conducive to achieving efficient heating in a smaller space.

[0013] In the present invention, the electric heating rod and the heat exchange tube are preferably in contact with each other and in surface contact, so as to increase the direct heat exchange area. The electric heating rod and the heat exchange tube are in direct contact to improve the heat exchange efficiency.

[0014] Preferably, the shell is made of heat-insulating material. The shell is made of heat-insulating material to improve the heat preservation effect and avoid excessive temperature inside the shell that may cause burns to the skin.

[0015] Preferably, the heat conducting medium is liquid. Liquid medium has higher heat conduction efficiency and can achieve the purpose of rapid heating.

[0016] Preferably, the heat conducting medium is thermal conductive silicone grease, which has high thermal conductivity, excellent thermal conductivity, good electrical insulation, a wide operating temperature range, and high stability.

[0017] The present invention also discloses an endoscope flusher with heating function, which utilizes the disposable heater and includes a peristaltic pump, a first water supply pipeline, a second water supply pipeline and a logic and heating control unit;

[0018] The peristaltic pump is connected to the first water supply pipeline, and the disposable heater is arranged between the first water supply pipeline and the second water supply pipeline;

[0019] The first water supply pipeline and the second water supply pipeline are respectively detachably connected to the plug connector of the disposable heater;

[0020] The electric heating rod and the temperature sensor are both electrically connected to the logic and heating control unit;

[0021] The logic and heating control unit controls the operation of the electric heating rod according to the temperature detected by the temperature sensor to maintain the set temperature.

[0022] The present invention preferably further includes a display unit for setting the heating temperature of the electric heating rod and displaying the temperature measured by the temperature sensor in real time. Using the display unit to set the heating temperature of the electric heating rod facilitates adjustment of the temperature of the liquid in the heat exchange tube, while displaying the temperature measured by the temperature sensor in real time prevents equipment failure resulting in excessive temperatures and burns to the patient.

[0023] Preferably, the first and second water supply pipelines are silicone tubes. The silicone tubes are used to prepare the first and second water supply pipelines, and the silicone tubes can be used as disposable consumables to avoid cross infection caused by repeated use.

[0024] Compared with the prior art, the beneficial effects of the present invention are as follows: the present invention seals the electric heating rod, heat exchange tube and temperature sensor in a shell, and fills the shell with a heat-conducting medium, uses the electric heating rod for efficient heating, and uniformly heats the liquid in the heat exchange tube through the heat-conducting medium.

[0025] The sealed housing prevents heat loss within the housing, providing a certain degree of insulation. A temperature sensor monitors the temperature within the housing in real time, facilitating adjustment of the heating rod's heating temperature. This ensures the heated liquid within the heat exchange tube remains within a reasonable temperature range, facilitating disinfection. The disposable heater of this utility model has a simple structure and low manufacturing cost, making it suitable for use as a disposable medical product. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a schematic structural diagram of the disposable heater of the present invention;

[0027] Figure 2 This is a schematic structural diagram of the electric heating rod and the heat exchange tube in Example 1 of the present utility model;

[0028] Figure 3 This is a schematic structural diagram of the electric heating rod and the heat exchange tube in Example 2 of the present utility model;

[0029] Figure 4 This is a schematic structural diagram of the endoscope flusher with heating function described in the utility model;

[0030] Figure 5 This is a circuit diagram of the logic and heating control unit of the present invention;

[0031] Figure 6 It is a schematic diagram of the liquid temperature change trend;

[0032] In the figure, 1 is a shell, 2 is an electric heating rod, 3 is a heat exchange tube, and 4 is a temperature sensor;

[0033] 5. Peristaltic pump, 6. First water supply pipeline, 7. Second water supply pipeline, 8. Logic and heating control unit, 9. Display unit. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments of the present invention will be described clearly and completely below with reference to the accompanying drawings.

[0035] Example 1

[0036] like Figure 1 As shown, a disposable heater includes a shell 1, an electric heating rod 2, a heat exchange tube 3 and a temperature sensor 4.

[0037] The electric heating rod 2, the heat exchange tube 3 and the temperature sensor 4 are sealed and arranged in the housing 1, and the housing 1 is filled with a heat-conducting medium.

[0038] The housing 1 is provided with a plug connector connected to the inlet and outlet of the heat exchange tube 3 .

[0039] The temperature sensor 4 is used to detect the temperature inside the housing 1 .

[0040] like Figure 2 As shown, the electric heating rod 2 is in a straight tube shape, and the heat exchange tube 3 is wound around the outside of the electric heating rod 2 .

[0041] The electric heating rod 2 and the heat exchange tube 3 are in contact with each other.

[0042] The housing 1 is made of heat-insulating material.

[0043] The heat conducting medium is thermally conductive silicone grease.

[0044] like Figure 4 As shown, an endoscope flusher with heating function utilizes the disposable heater mentioned above and includes a peristaltic pump 5 , a first water supply pipeline 6 , a second water supply pipeline 7 and a logic and heating control unit 8 .

[0045] The peristaltic pump 5 is connected to the first water supply pipeline 6 , and the disposable heater is arranged between the first water supply pipeline 6 and the second water supply pipeline 7 .

[0046] The first water supply pipeline 6 and the second water supply pipeline 7 are respectively detachably connected to the plug connector of the disposable heater. The second water supply pipeline 7 is connected to the endoscope.

[0047] The electric heating rod 2 and the temperature sensor 4 are both electrically connected to a logic and heating control unit 8 .

[0048] The logic and heating control unit 8 controls the operation of the electric heating rod 2 according to the temperature detected by the temperature sensor 4 to maintain the set temperature, that is, to keep the temperature inside the housing 1 within a preset range.

[0049] The endoscope flusher with heating function further comprises a display unit 9 , which is used to set the heating temperature of the electric heating rod 2 and to display the temperature measured by the temperature sensor 4 in real time.

[0050] The first water supply pipeline 6 and the second water supply pipeline 7 are both silicone tubes.

[0051] like Figure 4 As shown, this design consists of an endoscope water delivery device and a water delivery accessory. The endoscope water delivery device comprises a peristaltic pump, a logic and heating control unit, a display unit, and a power supply. Compared to existing devices, it also adds a heating control unit. The water delivery accessory adds a heating unit to the existing accessories. This heating unit is the disposable heater in this embodiment.

[0052] Due to the clinical need for sterility, the heating unit that comes into contact with the consumables must also be disposable. After production, both the consumables and the heating unit must be sterilized and packaged for use. Because these are disposable consumables, the cost of the heating unit must be controlled. Therefore, a separate heating unit was designed to meet the flow and temperature requirements.

[0053] The power supply in the endoscope water supply device is used to convert the input 220V AC power into the DC power required by the equipment.

[0054] The display unit 9 is used for human-machine parameter interaction and device status display.

[0055] The peristaltic pump is responsible for pressurizing the sterile liquid in the water delivery accessory and pumping the sterile liquid into the endoscope according to the flow setting parameters.

[0056] Heating module connector: Connects to the heating unit on the water supply accessory to transmit temperature signals and power to the heating unit.

[0057] The logic and heating control unit 8 is the core control unit of the device. It includes the heating control unit and the logic unit, and is mainly responsible for logic control and achieving constant temperature control of the heating module. The functions achieved include: completing user parameter settings on the display unit 9, controlling the start and speed setting of the peristaltic pump according to input, and controlling the heating power of the heating unit according to the temperature feedback from the heating unit. Figure 5 As shown, J7 is connected to the power supply of the heating unit, and J8 is connected to the NTC temperature signal of the heating unit. These two signals are connected to the heating unit through the heating module connector.

[0058] The heating control unit will send the collected real-time temperature to the logic unit, and supply power to the heating unit according to the control signal of the logic unit to heat the liquid.

[0059] The logic control unit controls the operation of the device. The flow rate and the expected temperature can be adjusted through the display unit 9. When the operation signal is detected, the peristaltic pump is controlled to start running and the heating control is started. During the operation, the temperature signal fed back by the heating unit is processed in real time, and the heating power of the heating unit is adjusted according to the pre-adjusted PID parameters to make the liquid temperature reach the set temperature. Figure 6 shown.

[0060] The heating unit consists of an electric heating rod 2, a heat exchange tube 3, and a temperature sensor 4, connected to the endoscope's water supply unit via a cable. The temperature sensor 4 uses an NTC temperature measurement component. The heating tube converts electrical energy into heat energy. Depending on the flow rate attachment, the heating power is related to the maximum flow rate of the water supply attachment. The NTC temperature measurement component detects the temperature of the heating unit and feeds it back to the heating control unit, which controls the power of the heating tube based on the set temperature. The heat exchange tube 3 transfers the heat generated by the electric heating rod 2 to the sterile liquid, heating it.

[0061] The structural diagram of the heating unit is shown in Figure 1 To accommodate silicone tubes of varying diameters, the heat exchange tube 3 has different spiral pitches and radii to better utilize the heat from the electric heating rod 2 and ensure consistent liquid temperature. To facilitate assembly and disinfection, the entire heating unit is encapsulated in a sealed TPE cavity filled with thermal grease.

[0062] Example 2

[0063] like Figure 3 As shown, the difference from Example 1 is that the electric heating rod 2 and the heat exchange tube 3 are both in a coil shape and are intertwined with each other.

Claims

1. A disposable heater, characterized in that: It comprises a housing (1), an electric heating rod (2), a heat exchange tube (3) and a temperature sensor (4); The electric heating rod (2), the heat exchange tube (3) and the temperature sensor (4) are sealed and arranged in the housing (1), and the housing (1) is filled with a heat-conducting medium; The housing (1) is provided with a plug connector connected to the inlet and outlet of the heat exchange tube (3); The temperature sensor (4) is used to detect the temperature inside the housing (1).

2. The disposable heater according to claim 1, wherein: The electric heating rod (2) is in the shape of a straight tube, and the heat exchange tube (3) is wound around the outside of the electric heating rod (2).

3. The disposable heater according to claim 1, wherein: The electric heating rod (2) and the heat exchange tube (3) are both in the shape of coils and are intertwined with each other.

4. The disposable heater according to claim 2 or 3, characterized in that: The electric heating rod (2) and the heat exchange tube (3) are in contact with each other.

5. The disposable heater according to claim 1, wherein: The shell (1) is made of heat-insulating material.

6. The disposable heater according to claim 1, wherein: The heat-conducting medium is in liquid state.

7. The disposable heater according to claim 1 or 6, characterized in that: The heat conducting medium is thermally conductive silicone grease.

8. An endoscope flusher with heating function, using the disposable heater according to any one of claims 1 to 7, characterized in that: It comprises a peristaltic pump (5), a first water supply pipeline (6), a second water supply pipeline (7), and a logic and heating control unit (8); The peristaltic pump (5) is connected to the first water supply pipeline (6), and the disposable heater is arranged between the first water supply pipeline (6) and the second water supply pipeline (7); The first water supply pipeline (6) and the second water supply pipeline (7) are respectively detachably connected to the plug connector of the disposable heater; The electric heating rod (2) and the temperature sensor (4) are both electrically connected to a logic and heating control unit (8); The logic and heating control unit (8) controls the operation of the electric heating rod (2) according to the temperature detected by the temperature sensor (4) to maintain the set temperature.

9. The endoscope flusher with heating function according to claim 8, characterized in that: It also includes a display unit (9), which is used to set the heating temperature of the electric heating rod (2) and to display the temperature measured by the temperature sensor (4) in real time.

10. The endoscope flusher with heating function according to claim 8, characterized in that: The first water supply pipeline (6) and the second water supply pipeline (7) are both silicone tubes.

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