Postoperative anesthesia analgesia equipment
The postoperative anesthesia and analgesia device, designed with semiconductor cooling pads and airflow channels, solves the problem of uncontrollable temperature in existing cold compresses, enabling flexible temperature control and rapid switching, thus improving comfort and reusability.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-02-11
- Publication Date
- 2026-04-14
AI Technical Summary
Existing cold or hot compresses are difficult to control the temperature, cannot meet the individual needs of different patients, and are not reusable.
It uses a semiconductor cooling chip as a heat source and combines it with a fan and airflow channel design. It can provide heat or coolness by switching the direction of the current. It uses copper strips to conduct heat or cold, and adjusts the airflow channel by the magnetic attraction of electromagnets and iron sheets. It is fixed to the skin with self-adhesive strips or silicone sleeves.
It enables flexible temperature control and rapid switching, the device is reusable, improves user comfort and fixation effect, reduces energy consumption, and adapts to the personalized needs of different patients.
Smart Images

Figure CN121845834A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of analgesia, and more particularly to a postoperative analgesia device. Background Technology
[0002] Postoperative anesthesia and analgesia are crucial aspects of postoperative recovery, aiming to reduce patient pain, promote rehabilitation, and prevent complications. Common analgesia methods include pharmacological analgesia and non-pharmacological analgesia. Pharmacological analgesia uses opioids, anesthetic components, and non-opioid drugs administered by injection or orally. Non-pharmacological analgesia mainly employs physical methods such as cold compresses, hot compresses, and physiotherapy to provide relief, and also includes adjusting postoperative positioning and providing psychological support.
[0003] When using physical methods for pain relief, such as cold compresses and hot compresses, cold compress packs or hot compress packs are generally used. These cold compress packs or hot compress packs are mostly disposable and cannot be reused. Moreover, the temperature of hot or cold compresses is difficult to control, making it difficult to meet the different needs of different patients in actual use. Summary of the Invention
[0004] The technical problem to be solved by this invention is to overcome the defects of the existing technology. To solve the above technical problem, the technical solution adopted by this invention is: A postoperative anesthesia and analgesia device includes a cylindrical shell. A gasket is installed at the bottom of the cylindrical shell. Multiple copper strips are installed on the top surface of the gasket inside the cylindrical shell. The multiple copper strips extend outward at equal intervals with the center of the gasket as the center. Connecting strips are integrally formed and fixed on the multiple copper strips. A semiconductor cooling chip is fixed to the copper strip at the center of the gasket by adhesive. A top cover plate is installed on the top of the cylindrical shell. A fixed frame is installed in the middle of the top cover plate. A movable frame that slides along the fixed frame is inserted into the fixed frame. One end of the movable frame abuts against the copper strip. A fan is installed inside the movable frame and blows air outward. A mesh plate is installed at the other end of the movable frame. A controller is installed on the top surface of the top cover plate. The fan and the semiconductor cooling chip are electrically connected to the controller.
[0005] A fixing plate is installed inside the cylindrical shell above the gasket, and a heat insulation pad that abuts against the copper strip is installed on the bottom surface of the fixing plate. The movable frame passes through the fixing plate and the heat insulation pad and is fixed.
[0006] The top cover plate inside the cylinder is equipped with multiple electromagnets at equal intervals on its bottom surface, and an iron plate is installed on the top surface of the fixing plate directly below the electromagnets. The electromagnets are electrically connected to the controller.
[0007] The top cover plate has multiple air inlets at equal intervals on the outer side near the cylinder shell, and the fixing plate and the heat insulation pad have multiple ventilation holes at equal intervals on the outer side near the cylinder shell.
[0008] The fixed plate and heat insulation pad inside the movable frame are provided with multiple air outlet holes at equal intervals.
[0009] The bottom outer side of the gasket has a groove, and a self-adhesive strip is installed in the groove.
[0010] An annular plate is installed between the outer side of the gasket and the inner wall of the cylinder. The annular plate has multiple holes at equal intervals, and a silicone sleeve is fitted inside the hole. The outer end of the silicone sleeve is coated with self-adhesive.
[0011] The silicone sleeve is arranged at an angle downwards toward the middle of the cylindrical shell.
[0012] An insert plate is inserted into the hole on the inner side of the silicone sleeve.
[0013] Compared with the prior art, the beneficial effects of the present invention include: 1. In this invention, a semiconductor cooling chip is used as a heat source and cold source. It only needs to be powered and the direction of the supply current can be switched to provide heat or cold. It can be reused. At the same time, a fan is provided for the semiconductor cooling chip, which can actively blow out the cold or heat from the non-use end to avoid affecting the normal operation of the semiconductor cooling chip. Moreover, the heat or cold output by the semiconductor cooling chip is conducted through copper strips, which can cover a larger area to ensure that the wound and the surrounding area can be covered.
[0014] 2. In this invention, a gasket is used to separate the copper strip from the skin, which can avoid excessive cold or heat when the skin comes into contact with it, thus improving the comfort of use. In addition, an insulation pad is set inside the shell to keep the required heat or cold energy inside the shell, which is then absorbed and transferred by the copper strip, reducing energy loss.
[0015] 3. In this invention, holes are made in the top cover plate, the fixing plate, and the heat insulation pad to form a stable airflow channel inside and outside the shell. When switching between hot and cold temperatures of the semiconductor cooling chip, airflow can be introduced through this channel to quickly remove residual and unused heat or cold energy, thus achieving rapid switching.
[0016] 4. In this invention, the movement of the fixed plate and the heat insulation pad is driven by the electromagnet being energized and the iron sheet being magnetically attracted, so that sufficient space is formed between the heat insulation pad and the copper strip for airflow. The airflow is then discharged through the air outlet in the movable frame, forming a stable inlet and outlet channel and increasing the discharge speed.
[0017] 5. In this invention, a self-adhesive strip is provided on the bottom surface of the pad, which can be directly attached to the skin for fixation, making it convenient, simple and quick to use.
[0018] 6. In this invention, an inclined silicone sleeve is provided and used in conjunction with an insert plate. When the sleeve is applied to the skin, the insert plate is pushed into the shell. At this time, the silicone sleeve is reset, which can form a certain degree of pull on the skin from the outside to the inside, so that the wound can be closed better and the wound pressure can be reduced. Attached Figure Description
[0019] 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. Wherein: Figure 1 This is a perspective view of the present invention; Figure 2 This is a bottom view of the present invention; Figure 3 This is a cross-sectional view of the present invention; Figure 4 This is a schematic diagram of the arrangement of the semiconductor cooling chip in this invention; Figure 5 This is a schematic diagram illustrating the setting of the active frame in this invention; Figure 6 This is a schematic diagram of the arrangement of the annular plate in this invention; Figure 7 This is a schematic diagram of the silicone sleeve arrangement in this invention; Figure 8 This is a three-dimensional view of the silicone sleeve in this invention.
[0020] Reference numerals: 1. Shell; 2. Gasket; 3. Copper strip; 4. Connecting strip; 5. Semiconductor cooling chip; 6. Fixing plate; 7. Heat insulation pad; 8. Top cover plate; 9. Fixing frame; 10. Movable frame; 11. Fan; 12. Mesh plate; 13. Controller; 14. Air inlet; 15. Ventilation hole; 16. Electromagnet; 17. Iron sheet; 18. Self-adhesive strip; 19. Air outlet; 20. Annular plate; 21. Silicone sleeve; 22. Insert plate. Detailed Implementation
[0021] 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.
[0022] According to one embodiment of the present invention, Figures 1-8 As shown.
[0023] Example 1: A postoperative anesthesia and analgesia device includes a cylindrical shell 1. A gasket 2 is installed at the bottom end of the cylindrical shell 1. A groove is cut on the outer side of the bottom of the gasket 2, and a self-adhesive strip 18 is installed in the groove. Multiple copper strips 3 are installed on the top surface of the gasket 2 inside the cylindrical shell 1. In this example, the number of copper strips 3 is eight. The multiple copper strips 3 extend outward at equal intervals with the center of the gasket 2 as the center. A connecting strip 4 is integrally formed and fixed on the multiple copper strips 3. A semiconductor cooling chip 5 is fixed on the copper strip 3 at the center of the gasket 2 by an adhesive. A top cover plate 8 is installed on the top of the shell 1. A fixed frame 9 is installed in the middle of the top cover plate 8. A movable frame 10 that slides along the fixed frame 9 is inserted into the fixed frame 9. One end of the movable frame 10 abuts against the copper strip 3. A fan 11 is installed inside the movable frame 10. The fan 11 blows air outward. A mesh plate 12 is installed at the other end of the movable frame 10. A controller 13 is installed on the top surface of the top cover plate 8. The fan 11 and the semiconductor cooling chip 5 are electrically connected to the controller 13. A fixing plate 6 is installed inside the shell 1 above the gasket 2. A heat insulation pad 7 that abuts against the copper strip 3 is installed on the bottom surface of the fixing plate 6. The movable frame 10 passes through the fixing plate 6 and the heat insulation pad 7 and is fixed. Multiple air outlet holes 19 with equal spacing are opened on the fixing plate 6 and the heat insulation pad 7 on the inner side of the movable frame 10. Multiple air inlet holes 14 with equal spacing are opened on the outer side of the top cover plate 8 near the shell 1. Multiple ventilation holes 15 with equal spacing are opened on the fixing plate 6 and the heat insulation pad 7 near the outer side of the shell 1. Multiple electromagnets 16 with equal spacing are installed on the bottom surface of the top cover plate 8 inside the cylinder shell 1. Iron plates 17 are installed on the top surface of the fixing plate 6 directly below the electromagnets 16. The electromagnets 16 are electrically connected to the controller 13.
[0024] When using, peel off the release film on the self-adhesive strip 18, connect the plug of the controller 13 to the socket, or use the built-in battery panel of the controller 13 for independent power supply, apply the self-adhesive strip 18 to the skin around the wound, and use the adhesive to fix it. To avoid pulling the wound when removing it, the adhesive should be low viscosity. After application, set the cold compress or hot compress from the controller 13 position. When applying a cold compress, the current input to the semiconductor cooling chip 5 is reversed, and the side in contact with the copper strip 3 is the cold end, generating cooling. When applying a hot compress, the current input is in the forward direction, and the side in contact with the copper strip 3 is the hot end, generating heat. Then, the temperature for hot or cold compress is set. Temperature control can be achieved by indirect measurement using Seebeck voltage, by measurement using a thermocouple, or by direct temperature monitoring using a temperature sensor. Once the settings are complete, the device is turned on and enters the working state. At this time, the semiconductor cooling chip 5 is powered on, and the end that is in contact with the copper strip 3 outputs heat or cold. The heat or cold is absorbed by the copper strip 3 and conducted through the connecting strip 4 to disperse it. Then the heat or cold is transferred to the pad 2, causing the pad 2 to heat up or cool down. The pad 2 can receive heat or cold when it comes into contact with the skin, thereby achieving the effect of hot compress or cold compress. When switching between hot and cold compresses, the electromagnet 16 is energized from position 13. The energized electromagnet 16 generates a magnetic field, which attracts the iron plate 17 directly below, thereby causing the fixed plate 6, the heat insulation pad 7, and the entire movable frame 10 to move upward, creating a larger space between the heat insulation pad 7 and the copper strip 3. Then, the fan 11 is turned on, and the fan 11 blows air outward. The air inside the cylinder 1 is discharged outward from the air outlet 19. Based on the principle of air pressure balance, the external air enters the cylinder 1 through the air inlet 14 of the top cover plate 8, then passes through the ventilation hole 15 into the space between the heat insulation pad 7 and the copper strip 3, and is then attracted by the fan 11 and discharged from the air outlet 19, forming an internal and external air circulation. When air circulates between the heat insulation pad 7 and the copper strip 3, it carries away the internal heat or cold to achieve temperature balance. After that, the hot and cold output direction of the semiconductor cooling chip 5 is switched to achieve rapid mode switching and reduce waiting time. After the switching is completed, the electromagnet 16 is de-energized, and the heat insulation pad 7 descends and presses against the copper strip 3 for heat preservation. At this time, because the heat insulation pad 7 descends, the space between it and the copper strip 3 is compressed, making it difficult for air to circulate. As a result, more of the required cold or heat is not discharged, and normal operation is not affected.
[0025] Example 2: The difference between this example and Example 1 is that the self-adhesive strip 18 is removed, and a silicone sleeve with self-adhesive is used to adhere to the skin for fixation. An annular plate 20 is installed between the outer side of the gasket 2 and the inner wall of the cylindrical shell 1. The annular plate 20 has multiple holes at equal intervals. A silicone sleeve 21 is fitted into the hole. The silicone sleeve 21 is inclined downward towards the middle of the cylindrical shell 1. The outer end of the silicone sleeve 21 is coated with self-adhesive. An insert plate 22 is inserted into the hole on the inner side of the silicone sleeve 21. The insert plate 22 abuts against the inner side of the silicone sleeve 21.
[0026] Before use, the insert plate 22 extends out. Since the silicone sleeve 21 is angled downwards, the insert plate 22 extends out and forms a limiting abutment against the silicone sleeve 21, making the bottom surface of the silicone sleeve 21 relatively flat. Then, the release film on the self-adhesive of the bottom surface of the silicone sleeve 21 is peeled off and it is attached to the skin. When it is attached, the skin pushes the insert plate 22 back into the shell 1. After the insert plate 22 is removed, the silicone sleeve 21 returns to its original position and the bottom deforms inward. Since the bottom surface of the silicone sleeve 21 is attached to the skin with self-adhesive, it will pull the skin inward to a certain extent to reduce the pressure on the internal wound.
[0027] 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 postoperative anesthesia and analgesia device, comprising a cylindrical shell (1), characterized in that, A gasket (2) is installed at the bottom of the cylindrical shell (1). Multiple copper strips (3) are installed on the top surface of the gasket (2) inside the cylindrical shell (1). The multiple copper strips (3) extend outward at equal intervals with the center of the gasket (2) as the center. A connecting strip (4) is integrally formed and fixed on the multiple copper strips (3). A semiconductor cooling chip (5) is fixed on the copper strip (3) in the center of the gasket (2) by adhesive. A top cover plate (8) is installed on the top of the cylindrical shell (1). A fixed frame (9) is installed in the middle of the top cover plate (8). A movable frame (10) that slides along the fixed frame (9) is inserted into the fixed frame (9). One end of the movable frame (10) abuts against the copper strip (3). A fan (11) is installed inside the movable frame (10). The fan (11) blows air outward. A mesh plate (12) is installed on the other end of the movable frame (10). A controller (13) is installed on the top surface of the top cover plate (8). The fan (11) and the semiconductor cooling chip (5) are electrically connected to the controller (13).
2. The postoperative anesthesia and analgesia device according to claim 1, characterized in that, A fixing plate (6) is installed inside the cylinder shell (1) above the gasket (2). A heat insulation pad (7) that abuts against the copper strip (3) is installed on the bottom surface of the fixing plate (6). The movable frame (10) passes through the fixing plate (6) and the heat insulation pad (7) and is fixed.
3. The postoperative anesthesia and analgesia device according to claim 2, characterized in that, Multiple electromagnets (16) with equal spacing are installed on the bottom surface of the top cover plate (8) inside the cylindrical shell (1). Iron plates (17) are installed on the top surface of the fixing plate (6) directly below the electromagnets (16). The electromagnets (16) are electrically connected to the controller (13).
4. The postoperative anesthesia and analgesia device according to claim 3, characterized in that, The top cover plate (8) has multiple air inlets (14) at equal intervals on the outer side near the shell (1), and the fixing plate (6) and the heat insulation pad (7) have multiple ventilation holes (15) at equal intervals on the outer side near the shell (1).
5. A postoperative anesthesia and analgesia device according to claim 4, characterized in that, Multiple air outlet holes (19) with equal spacing are provided on the fixing plate (6) and heat insulation pad (7) inside the movable frame (10).
6. A postoperative anesthesia and analgesia device according to any one of claims 1-5, characterized in that, The bottom outer side of the gasket (2) is grooved, and a self-adhesive strip (18) is installed in the groove.
7. A postoperative anesthesia and analgesia device according to any one of claims 1-5, characterized in that, An annular plate (20) is installed between the outer side of the gasket (2) and the inner wall of the cylinder shell (1). The annular plate (20) has multiple holes at equal intervals, and a silicone sleeve (21) is fitted inside the hole. The outer end of the silicone sleeve (21) is coated with self-adhesive.
8. A postoperative anesthesia and analgesia device according to claim 7, characterized in that, The silicone sleeve (21) is inclined downward toward the middle of the cylindrical shell (1).
9. A postoperative anesthesia and analgesia device according to claim 8, characterized in that, An insert plate (22) is inserted into the hole on the inner side of the silicone sleeve (21).