Preheating device matched with gas path of medical pneumoperitoneum machine
Patent Information
- Application Number
- CN202521891251.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-03
- Publication Date
- 2026-08-18
- Estimated Expiration
- 2035-09-03
AI Technical Summary
[0004]为了弥补以上不足，本实用新型提供了医用气腹机气路配套的预热装置，旨在改善现有的气腹机预热技术中，可能会出现对于温度的监测效果不好，液态CO2吸收大量热量导致气体温度骤降的问题
1、本实用新型中，通过加热管可以对二氧化碳进行加热，同时配合温度传感器对温度实时监测，推动推板，通过第一转轴、转板、第二转轴、连接座、卡块、支撑柱和第一弹簧的配合，达到对二氧化碳加热，并通过独立工作的温度传感器采集温度参数反馈至控制器，提高温度控制的准确性，同时便于对其安装维护的效果。
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Figure CN224649997U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, and in particular to a preheating device for the air circuit of a medical insufflator. Background Technology
[0002] A medical insufflator is a medical device used in laparoscopic surgery. It creates an insufflation area by injecting gas (usually carbon dioxide), providing surgeons with a surgical operating space. It typically consists of an insufflator generator, a gas supply system, and a control system. Unheated gas is usually colder than body temperature. Injecting large amounts of cold gas into the patient's abdominal cavity can cause discomfort such as chills. Therefore, a preheating device is used in conjunction with the insufflator's gas circuit.
[0003] The preheating device that comes with the gas circuit of a medical insufflator is a device used to preheat the gas before it enters the patient's abdominal cavity to ensure that the gas temperature is close to the human body temperature (usually 37℃±0.5℃), thereby reducing thermal damage to the patient's abdominal organs. In the existing preheating technology of insufflators, there may be situations where the temperature monitoring effect is not good, and the liquid CO2 absorbs a large amount of heat, causing the gas temperature to drop sharply. Utility Model Content
[0004] To overcome the above shortcomings, this utility model provides a preheating device for the gas circuit of a medical insufflator, which aims to improve the existing insufflator preheating technology, which may have poor temperature monitoring and cause a sudden drop in gas temperature due to liquid CO2 absorbing a large amount of heat.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a preheating device for the air circuit of a medical pneumoperitoneum machine, comprising a heating box and a sliding assembly. The heating box contains a heating tube. A fixing block is fixedly connected to the outer wall of the heating box. A push plate is slidably connected to the inside of the fixing block. A first rotating shaft is rotatably connected to the inside of the push plate. A rotating plate is fixedly connected to the outer wall of the first rotating shaft. A second rotating shaft is rotatably connected to the inside of the rotating plate. A connecting seat is fixedly connected to the outer wall of the second rotating shaft. A locking block is fixedly connected to the outer wall of the connecting seat. The outer wall of the locking block is slidably connected to the inside of the fixing block. A support column is slidably connected to the inside of the locking block. The outer wall of the support column is fixedly connected to the inside of the fixing block. A first spring is slidably connected to the outer wall of the support column. One end of the first spring is fixedly connected to the inside of the fixing block, and the other end of the first spring is fixedly connected to the outer wall of the locking block. A temperature sensor abuts against the outer wall of the locking block. A discharge assembly is provided on the outer wall of the heating box.
[0006] The above technical solution allows for the heating of carbon dioxide gas via an annular heating tube. Temperature sensors at different locations at the gas outlet of the heating chamber enable more accurate temperature monitoring. Pushing the push plate causes the rotating plate to rotate, which in turn drives the connecting seat and the locking block to slide via the second rotating shaft. Adjusting the position of the locking block allows for the installation or removal and maintenance of the temperature sensors.
[0007] Preferably, the emission assembly includes a gas chamber, which is connected to the heating box by a pipe. An air outlet is fixedly connected inside the gas chamber. An exhaust valve is provided on the upper surface of the gas chamber. A mechanical vent valve is provided on the upper surface of the gas chamber. An air inlet is fixedly connected to the top of the heating box.
[0008] Preferably, the sliding assembly includes a sliding column, the outer wall of which is slidably connected to the interior of the fixed block, a pull tab is fixedly connected to the outer wall of the sliding column, a second spring is slidably connected to the outer wall of the sliding column, one end of the second spring is fixedly connected to the interior of the fixed block, and the other end of the second spring is fixedly connected to a connecting piece, the outer wall of the connecting piece is slidably connected to the inner wall of the fixed block, and both ends of the connecting piece are fixedly connected to the sliding column and the locking block, respectively.
[0009] Preferably, a support plate is fixedly connected to the outer wall of the heating box, a motor is fixedly connected to the lower surface of the support plate, and a drive shaft is fixedly installed at the output end of the motor.
[0010] Preferably, the outer wall of the drive shaft is rotatably connected to the inside of the support plate, the top of the support plate is fixedly connected to a turntable, and the upper surface of the turntable is fixedly connected to a fixed shaft.
[0011] Preferably, the outer wall of the fixed shaft is provided with a sliding block, the outer wall of the sliding block is fixedly connected to a support rod, the outer wall of the support rod is slidably connected to a fixed plate, and the lower surface of the fixed plate is fixedly connected to the upper surface of the support plate.
[0012] Preferably, the outer wall of the sliding block is fixedly connected to a sliding plate, and the outer wall of the sliding plate is slidably connected to the inside of the heating box.
[0013] Preferably, a cleaning rod is fixedly connected to the outer wall of the slide plate, a filter plate is slidably connected to the outer wall of the cleaning rod, and the outer wall of the filter plate is fixedly connected to the inside of the heating box.
[0014] This utility model has the following beneficial effects: 1. In the present utility model, the carbon dioxide can be heated by a heating tube, and at the same time, the temperature is monitored in real time by a temperature sensor. The push plate is pushed, and through the cooperation of the first rotating shaft, the rotating plate, the second rotating shaft, the connecting seat, the clamping block, the support column and the first spring, the carbon dioxide is heated, and the temperature parameters are collected by the independently operating temperature sensor and fed back to the controller, improving the accuracy of temperature control and facilitating its installation and maintenance.
[0015] 2. In the present utility model, when the motor is started, the drive shaft rotates. Through the cooperation of the turntable, the fixed shaft, the sliding block, the support rod, the sliding plate and the cleaning rod, the filter plate is cleaned, achieving the effect of regularly removing dust, impurities and microorganisms on the filter plate, and ensuring that the gas entering the patient's abdominal cavity remains highly pure. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a three-dimensional schematic diagram of the preheating device supporting the gas path of the medical insufflator proposed by the present utility model; Figure 2 is a partial structural schematic diagram of the heating tube of the preheating device supporting the gas path of the medical insufflator proposed by the present utility model; Figure 3 is a cross-sectional schematic diagram of the internal structure of the fixing block of the preheating device supporting the gas path of the medical insufflator proposed by the present utility model; Figure 4 is a partial structural schematic diagram of the air inlet of the preheating device supporting the gas path of the medical insufflator proposed by the present utility model; Figure 5 is a partial structural schematic diagram of the connecting piece of the preheating device supporting the gas path of the medical insufflator proposed by the present utility model; Figure 6 is a partial structural schematic diagram of the filter plate of the preheating device supporting the gas path of the medical insufflator proposed by the present utility model; Figure 7 is a partial structural schematic diagram of the turntable of the preheating device supporting the gas path of the medical insufflator proposed by the present utility model.
[0017] Legend Explanation: 1. Heating box; 2. Fixing block; 3. Push plate; 4. First rotating shaft; 5. Rotating plate; 6. Second rotating shaft; 7. Connecting seat; 8. Clamping block; 9. Support column; 10. First spring; 11. Temperature sensor; 12. Air capacitance cavity; 13. Air outlet; 14. Heating tube; 15. Exhaust valve; 16. Mechanical air release valve; 17. Air inlet; 18. Sliding component; 1801. Slide column; 1802. Pulling piece; 1803. Second spring; 1804. Connecting piece; 19. Support plate; 20. Motor; 21. Drive shaft; 22. Turntable; 23. Fixed shaft; 24. Sliding block; 25. Support rod; 26. Fixed plate; 27. Sliding plate; 28. Cleaning rod; 29. Filter plate. Detailed Implementation
[0018] The technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.
[0019] Example 1: Reference Figure 1 , Figure 2 and Figure 3 An embodiment of this utility model provides a preheating device for the air circuit of a medical pneumoperitoneum machine, including a heating box 1 and a sliding assembly 18. A heating tube 14 is provided inside the heating box 1. A fixing block 2 is fixedly connected to the outer wall of the heating box 1. A push plate 3 is slidably connected inside the fixing block 2. A first rotating shaft 4 is rotatably connected inside the push plate 3. A rotating plate 5 is fixedly connected to the outer wall of the first rotating shaft 4. A second rotating shaft 6 is rotatably connected inside the rotating plate 5. A connecting seat 7 is fixedly connected to the outer wall of the second rotating shaft 6. A locking block 8 is fixedly connected to the outer wall of the connecting seat 7. The outer wall of the locking block 8 is slidably connected inside the fixing block 2. A support column 9 is slidably connected inside the locking block 8. The outer wall of the support column 9 is fixedly connected to the inner wall of the fixing block 2. A first spring 10 is slidably connected to the outer wall of the support column 9. One end of the first spring 10 is fixedly connected to the inner wall of the fixing block 2. The other end of the first spring 10 is fixedly connected to the outer wall of the locking block 8. A temperature sensor 11 abuts against the outer wall of the locking block 8. A discharge assembly is provided on the outer wall of the heating box 1. Specifically, in this embodiment, the heating tube 14 is annular, allowing for full contact with the passing carbon dioxide gas and achieving uniform heating. The fixing block 2, fixed to the outer wall of the heating box 1, supports the push plate 3. The first rotating shaft 4 connects the push plate 3 and the rotating plate 5, pushing the push plate 3 to slide inside the fixing block 2. This allows the rotating plate 5 to rotate inside the fixing block 2 via the sliding of the first rotating shaft 4. The second rotating shaft 6 connects the rotating plate 5 and the connecting seat 7, allowing the connecting seat 7 to slide synchronously via the pushing of the second rotating shaft 6. The locking block 8 secures the connecting seat 7. The function of the locking block 8 is to drive the locking block 8 to slide synchronously inside the fixed block 2. The support column 9 is fixed inside the fixed block 2 to support and limit the sliding of the locking block 8. The first spring 10 is placed between the fixed block 2 and the locking block 8. The first spring 10 will be squeezed due to the sliding of the locking block 8. When the first spring 10 is not squeezed, it can push the locking block 8 to slide in the opposite direction through its own rebound. The temperature sensor 11 can be fixed or disassembled for maintenance by sliding the locking block 8 in or out. The temperature sensor 11 is a prior art technology and can monitor the temperature inside the heating box 1 in real time.
[0020] Reference Figure 1 The emission assembly includes a gas chamber 12, which is connected to the heating box 1 by a pipe. An air outlet 13 is fixedly connected inside the gas chamber 12. An exhaust valve 15 is provided on the upper surface of the gas chamber 12. A mechanical vent valve 16 is provided on the upper surface of the gas chamber 12. An air inlet 17 is fixedly connected to the top of the heating box 1. Specifically, the heated and filtered carbon dioxide gas can be stored in the gas chamber 12, and the gas can be discharged through the outlet 13. The exhaust valve 15 is used to discharge excess gas in the gas chamber 12 when needed to ensure that the gas pressure is within a safe range. The mechanical vent valve 16 is a safety device used to automatically release gas when the gas pressure exceeds the set value to prevent equipment damage or patient injury caused by excessive gas pressure. The heating box 1 fixes the air inlet 17, which facilitates the introduction of carbon dioxide gas into the interior of the heating box 1.
[0021] Example 2: Reference Figure 4 and Figure 5 The sliding assembly 18 includes a sliding column 1801, the outer wall of which is slidably connected to the inside of the fixed block 2. A pull tab 1802 is fixedly connected to the outer wall of the sliding column 1801. A second spring 1803 is slidably connected to the outer wall of the sliding column 1801. One end of the second spring 1803 is fixedly connected to the inside of the fixed block 2. The other end of the second spring 1803 is fixedly connected to a connecting piece 1804. The outer wall of the connecting piece 1804 is slidably connected to the inner wall of the fixed block 2. Both ends of the connecting piece 1804 are fixedly connected to the sliding column 1801 and the locking block 8, respectively. Specifically, in another embodiment, the fixing block 2 supports the sliding column 1801, and the sliding column 1801 fixes the pull tab 1802. By pulling the pull tab 1802, the sliding column 1801 can slide inside the fixing block 2. The sliding column 1801 fixes the connecting piece 1804, thereby causing the connecting piece 1804 to slide synchronously. The second spring 1803 is placed between the connecting piece 1804 and the fixing block 2. The second spring 1803 will be compressed due to the sliding of the connecting piece 1804. When the second spring 1803 is not sliding, it will push the connecting piece 1804 to slide in the opposite direction through its own rebound. The connecting piece 1804 fixes the locking block 8, thereby causing the locking block 8 to slide synchronously.
[0022] Reference Figure 1 , Figure 6 and Figure 7 A support plate 19 is fixedly connected to the outer wall of the heating box 1. A motor 20 is fixedly connected to the lower surface of the support plate 19. A transmission shaft 21 is fixedly installed at the output end of the motor 20. The outer wall of the transmission shaft 21 is rotatably connected to the inside of the support plate 19. A turntable 22 is fixedly connected to the top of the support plate 19. A fixed shaft 23 is fixedly connected to the upper surface of the turntable 22. A sliding block 24 is provided on the outer wall of the fixed shaft 23. A support rod 25 is fixedly connected to the outer wall of the sliding block 24. A fixed plate 26 is slidably connected to the outer wall of the support rod 25. The lower surface of the fixed plate 26 is fixedly connected to the upper surface of the support plate 19. A sliding plate 27 is fixedly connected to the outer wall of the sliding block 24. The outer wall of the sliding plate 27 is slidably connected to the inside of the heating box 1. A cleaning rod 28 is fixedly connected to the outer wall of the sliding plate 27. A filter plate 29 is slidably connected to the outer wall of the cleaning rod 28. The outer wall of the filter plate 29 is fixedly connected to the inside of the heating box 1. Specifically, the support plate 19 is fixed to the outer wall of the heating box 1, providing support and fixation for the motor 20. When the motor 20 is started, its driving action causes the transmission shaft 21 to rotate stably inside the support plate 19. The transmission shaft 21 fixes the turntable 22, causing it to rotate synchronously. The turntable 22 supports and fixes the fixed shaft 23, which is positioned on the inner wall of the sliding block 24. When the fixed shaft 23 rotates, it rotates and slides along the inner wall of the sliding block 24, applying pressure to the sliding block 24 during this process. The pushing force causes them to slide synchronously. The sliding block 24 fixes the support rod 25 and the slide plate 27, thereby causing the support rod 25 and the slide plate 27 to slide synchronously. The fixing plate 26 is fixed on the upper surface of the support plate 19 to support and limit the support rod 25, preventing deviation during the sliding process. The slide plate 27 fixes the cleaning rod 28, thereby causing the cleaning rod 28 to slide synchronously. The cleaning rod 28 is in contact with the filter plate 29. By sliding the cleaning rod 28, the filter plate 29 can be scraped back and forth, realizing automatic cleaning of the filter plate 29.
[0023] Working principle: When the device is needed, carbon dioxide gas is introduced into the heating chamber 1 through the air inlet 17. The heating chamber 1 is equipped with an annular heating tube 14, which can fully contact the introduced carbon dioxide gas to heat it evenly. The heated gas is filtered through the filter plate 29 and enters the gas container 12. It can be discharged through the air outlet 13. The temperature inside the heating chamber 1 can be monitored in real time by the temperature sensors 11 on the upper and lower sides of the heating chamber 1, so that the temperature can be adjusted in time. When the temperature sensor 11 needs to be installed or maintained, push the push plate 3 to slide inside the fixed block 2. When the push plate 3 slides, it will push the rotating plate 5 to rotate through the first rotating shaft 4. During the rotation of the rotating plate 5, it will push the connecting seat 7 and the locking block 8 to slide through the internal second rotating shaft 6. The locking block 8 will slide on the outer wall of the support column 9 and squeeze the first spring 10 during the sliding process. When the locking block 8 slides out of the interior of the temperature sensor 11, the temperature sensor 11 can be removed for maintenance. In another embodiment, pulling the pull tab 1802 causes the sliding column 1801 to slide inside the fixed block 2. When the sliding column 1801 slides, it will cause the connecting piece 1804 to slide, and during the sliding process, it will squeeze the second spring 1803. When the connecting piece 1804 slides, it will also cause the locking block 8 to slide synchronously inside the fixed block 2, so that the locking block 8 can be slid out of the temperature sensor 11. Similarly, the temperature sensor 11 can be removed. Temperature sensors 11 are set at different positions at the outlet of the heating box 1 to achieve carbon dioxide heating. The temperature parameters are collected by the independently working temperature sensor 11 and fed back to the controller, which improves the accuracy of temperature control and facilitates its installation and maintenance. The filter plate 29 is prone to clogging during long-term use. The starting motor 20 drives the drive shaft 21 to rotate. When the drive shaft 21 rotates, it drives the turntable 22 and the fixed shaft 23 to rotate simultaneously. The fixed shaft 23 is set on the inner wall of the sliding block 24. The fixed shaft 23 rotates and slides on the inner wall of the sliding block 24, pushing the support rod 25 and the slide plate 27 to slide simultaneously. When the slide plate 27 slides, it drives the cleaning rod 28 to slide. The cleaning rod 28 is in contact with the filter plate 29, which can clean the impurities on the filter plate 29. This achieves the effect of regularly removing dust, impurities and microorganisms from the filter plate 29, ensuring that the gas entering the patient's abdominal cavity remains highly pure. This device can not only heat carbon dioxide and collect temperature parameters through the independently operating temperature sensor 11 to feed back to the controller, improving the accuracy of temperature control, but also facilitate its installation and maintenance. It can also achieve the effect of regularly removing dust, impurities and microorganisms from the filter plate 29, ensuring that the gas entering the patient's abdominal cavity remains highly pure.
[0024] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A preheating device for the air circuit of a medical pneumoperitoneum machine, comprising a heating box (1) and a sliding assembly (18), characterized in that: The heating box (1) is equipped with a heating tube (14) inside. A fixing block (2) is fixedly connected to the outer wall of the heating box (1). A push plate (3) is slidably connected inside the fixing block (2). A first rotating shaft (4) is rotatably connected inside the push plate (3). A rotating plate (5) is fixedly connected to the outer wall of the first rotating shaft (4). A second rotating shaft (6) is rotatably connected inside the rotating plate (5). A connecting seat (7) is fixedly connected to the outer wall of the second rotating shaft (6). A locking block (8) is fixedly connected to the outer wall of the connecting seat (7). The outer wall of the card block (8) is slidably connected to the inside of the fixed block (2). The card block (8) is slidably connected to the inside of the support column (9). The outer wall of the support column (9) is fixedly connected to the inside of the fixed block (2). The outer wall of the support column (9) is slidably connected to the first spring (10). One end of the first spring (10) is fixedly connected to the inside of the fixed block (2). The other end of the first spring (10) is fixedly connected to the outer wall of the card block (8). The outer wall of the card block (8) is abutted against the temperature sensor (11). The outer wall of the heating box (1) is provided with a discharge assembly.
2. The preheating device for the air circuit of the medical pneumoperitoneum machine according to claim 1, characterized in that: The emission assembly includes a gas chamber (12), which is connected to the heating box (1) by a pipe. An air outlet (13) is fixedly connected inside the gas chamber (12). An exhaust valve (15) is provided on the upper surface of the gas chamber (12). A mechanical vent valve (16) is provided on the upper surface of the gas chamber (12). An air inlet (17) is fixedly connected to the top of the heating box (1).
3. The preheating device for the air circuit of the medical pneumoperitoneum machine according to claim 1, characterized in that: The sliding assembly (18) includes a sliding column (1801), the outer wall of which is slidably connected to the inside of the fixed block (2), a pull tab (1802) is fixedly connected to the outer wall of the sliding column (1801), a second spring (1803) is slidably connected to the outer wall of the sliding column (1801), one end of the second spring (1803) is fixedly connected to the inside of the fixed block (2), and the other end of the second spring (1803) is fixedly connected to a connecting piece (1804). The outer wall of the connecting piece (1804) is slidably connected to the inner wall of the fixed block (2), and both ends of the connecting piece (1804) are fixedly connected to the sliding column (1801) and the locking block (8) respectively.
4. The preheating device for the air circuit of the medical pneumoperitoneum machine according to claim 1, characterized in that: The outer wall of the heating box (1) is fixedly connected to a support plate (19), and the lower surface of the support plate (19) is fixedly connected to a motor (20). The output end of the motor (20) is fixedly provided with a transmission shaft (21).
5. The preheating device for the air circuit of the medical pneumoperitoneum machine according to claim 4, characterized in that: The outer wall of the drive shaft (21) is rotatably connected to the inside of the support plate (19), and a turntable (22) is fixedly connected to the top of the support plate (19), and a fixed shaft (23) is fixedly connected to the upper surface of the turntable (22).
6. The preheating device for the air circuit of the medical pneumoperitoneum machine according to claim 5, characterized in that: The outer wall of the fixed shaft (23) is provided with a sliding block (24), the outer wall of the sliding block (24) is fixedly connected with a support rod (25), the outer wall of the support rod (25) is slidably connected with a fixing plate (26), and the lower surface of the fixing plate (26) is fixedly connected to the upper surface of the support plate (19).
7. The preheating device for the air circuit of the medical pneumoperitoneum machine according to claim 6, characterized in that: The outer wall of the sliding block (24) is fixedly connected to the slide plate (27), and the outer wall of the slide plate (27) is slidably connected to the inside of the heating box (1).
8. The preheating device for the air circuit of the medical pneumoperitoneum machine according to claim 7, characterized in that: A cleaning rod (28) is fixedly connected to the outer wall of the sliding plate (27), and a filter plate (29) is slidably connected to the outer wall of the cleaning rod (28). The outer wall of the filter plate (29) is fixedly connected to the inside of the heating box (1).