Aerosol contamination prevention dental treatment unit
By integrating components such as a three-way valve, rotary joint, metal swivel, and air guide shell into the dental treatment table, and utilizing an external air pump to extract and purify aerosols, the problem of aerosol pollution in dental treatment is solved, achieving cleanliness of the treatment room and protection of the health of medical staff.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE 968TH HOSPITAL OF THE CHINESE PEOPLES LIBERATION ARMY JOINT LOGISTICS SUPPORT FORCE
- Filing Date
- 2025-07-10
- Publication Date
- 2026-07-14
AI Technical Summary
Traditional dental treatment units cannot effectively handle the aerosols generated during treatment, leading to aerosol contamination of the treatment room and affecting the health of medical staff.
A dental treatment unit designed to prevent aerosol contamination is used. Through a combination of a three-way pipe, a rotary joint, a metal swivel, an air guide shell, and an air guide cover, an external air pump is used to extract aerosols generated during the patient's treatment, which are then treated by a purification device.
It effectively reduces the dispersion of aerosols in the treatment room, reduces environmental pollution, and improves the work safety of medical staff.
Smart Images

Figure CN224484429U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical equipment technology, specifically to a dental treatment table that prevents aerosol contamination. Background Technology
[0002] Dental chairs, also known as dental treatment units, are the core equipment in the dental treatment process. During dental treatment, especially when using instruments (such as dental drills, ultrasonic scalers) or aerosol spray devices, a large amount of aerosols containing pathogens such as bacteria and viruses are often generated. Because traditional dental chairs cannot properly handle the dispersed aerosols during the patient's dental treatment, a large amount of aerosols are dispersed into the treatment room environment, causing pollution and adversely affecting the health of medical staff. Utility Model Content
[0003] The purpose of this invention is to provide a dental treatment table that prevents aerosol pollution. It has the advantage of being able to extract aerosols generated during the patient's dental treatment from both sides, thus preventing a large amount of aerosols from drifting into the treatment room and causing pollution.
[0004] To achieve the above objectives, this utility model provides the following technical solution: a dental treatment table for preventing aerosol contamination, comprising a dental chair body, a fixing plate fixedly installed on the upper left side of the dental chair body, two fixing plates, a fixing cylinder fixedly connected to the bottom of the fixing plate, a metal rotating tube movably inserted between the middle end of the fixing cylinder and the middle end of the fixing plate, an air guide shell fixedly connected to the top of the metal rotating tube, an air guide cover placed on the right side of the air guide shell, an air vent on the surface of the air guide cover, a rotary joint fixedly installed at the bottom of the metal rotating tube, and a T-joint fixedly installed between the bottoms of the two rotary joints.
[0005] As a preferred embodiment, a pin hole is provided at the bottom of the inner cavity of the fixed cylinder, and an annular block is fixedly connected to the lower end of the metal rotating tube. The surface of the annular block is movably connected to the inner cavity of the fixed cylinder. Accommodation holes are provided around the bottom of the annular block. A pin is movably connected between the lower end of the accommodation hole and the surface of the pin hole, and a pressure spring is placed between the top of the pin and the top of the accommodation hole.
[0006] As a preferred embodiment, the pin hole is hemispherical in shape, and the lower end of the pin is also hemispherical.
[0007] As a preferred embodiment, armrests are fixedly installed on both sides of the dental chair body, and a headrest is fixedly installed at the middle of the top of the dental chair body.
[0008] As a preferred embodiment, a base is fixedly installed at the bottom of the dental chair body, and a rubber anti-slip pad is fixedly connected to the bottom of the base.
[0009] As a preferred embodiment, screws are movably inserted at both ends of the air guide cover, and fixed posts are fixedly connected to both ends of the inner cavity of the air guide shell, with the screws threaded to the right side of the fixed posts.
[0010] As a preferred embodiment, a pipe clamp is fixedly installed on the upper left side of the dental chair body, and the surface of the tee pipe is movably inserted into the surface of the pipe clamp.
[0011] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0012] This invention, through the design of a three-way pipe, rotary joint, metal swivel, air guide shell, air guide cover, and air hole, enables the treatment of aerosols generated when the patient is lying on top of the dental chair, reducing the pollution caused by aerosol dispersion in the treatment room and greatly meeting the needs of medical staff. Attached Figure Description
[0013] Figure 1 This is a perspective view of the present utility model;
[0014] Figure 2 This is a schematic diagram of the left side structure of this utility model;
[0015] Figure 3 This is a schematic diagram of the three-way pipe structure of this utility model;
[0016] Figure 4 This is a front sectional view of the fixed cylinder of this utility model;
[0017] Figure 5 This is a top view cross-sectional structural diagram of the air guide shell of this utility model;
[0018] Figure 6 This is a top view cross-sectional structural diagram of the fixed cylinder of this utility model.
[0019] In the diagram: 1. Dental chair body; 2. Base; 3. Armrest; 4. Headrest; 5. Air duct shell; 6. Metal duct; 7. Fixing plate; 8. Pipe clamp; 9. T-connector; 10. Air duct cover; 11. Fixing cylinder; 12. Rotary joint; 13. Annular block; 14. Receiving hole; 15. Compression spring; 16. Pin; 17. Pin hole; 18. Screw; 19. Fixing post; 20. Air hole. Detailed Implementation
[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0021] Secondly, the term "an embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that excludes other embodiments.
[0022] The components of this application, including the dental chair body 1, base 2, armrest 3, headrest 4, air duct shell 5, metal duct 6, fixing plate 7, pipe clamp 8, tee pipe 9, air duct cover 10, fixing cylinder 11, rotary joint 12, annular block 13, receiving hole 14, pressure spring 15, pin 16, pin hole 17, screw 18, fixing post 19, and air hole 20, are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods.
[0023] Example 1:
[0024] Please see Figures 1-6 As shown, this utility model provides a dental treatment table to prevent aerosol contamination, including a dental chair body 1. A fixing plate 7 is fixedly installed on the upper left side of the dental chair body 1. There are two fixing plates 7. A fixing cylinder 11 is fixedly connected to the bottom of the fixing plate 7. A metal rotating tube 6 is movably inserted between the middle end of the fixing cylinder 11 and the middle end of the fixing plate 7. An air guide shell 5 is fixedly connected to the top of the metal rotating tube 6. An air guide cover 10 is placed on the right side of the air guide shell 5. An air guide cover 10 has an air hole 20 on its surface. A rotary joint 12 is fixedly installed at the bottom of the metal rotating tube 6. A three-way pipe 9 is fixedly installed between the bottoms of the two rotary joints 12.
[0025] In this technical solution, during use, the three-way pipe 9 is first connected to the input pipe of the external air pump. Then, during the treatment process when the dental patient is lying on top of the dental chair body 1, the medical staff manipulates the metal rotating pipe 6 to rotate along the surface of the fixed plate 7 and the fixed cylinder 11, so that the air hole 20 on the air guide cover 10 can face the patient. Under the action of the external air pump, the aerosols that are dispersed on both sides of the patient's mouth during the treatment can be extracted through the three-way pipe 9, the rotating joint 12, the metal rotating pipe 6, the air guide shell 5, the air guide cover 10 and the air hole 20. At the same time, the aerosols are transported to the external purification equipment through the external air pump, thereby achieving the purpose of treating the aerosols generated during the patient's dental treatment and reducing the pollution caused by the dispersion of aerosols in the treatment room.
[0026] Example 2:
[0027] Based on Embodiment 1, this utility model is as follows: Figure 4 and Figure 6 As shown, a pin hole 17 is provided at the bottom of the inner cavity of the fixed cylinder 11. An annular block 13 is fixedly connected to the lower end of the metal rotating tube 6. The surface of the annular block 13 is movably connected to the inner cavity of the fixed cylinder 11. Receiving holes 14 are provided around the bottom of the annular block 13. A pin 16 is movably connected between the lower end of the receiving hole 14 and the surface of the pin hole 17. A pressure spring 15 is placed between the top of the pin 16 and the top of the receiving hole 14. The pin hole 17 is hemispherical in shape, and the lower end of the pin 16 is hemispherical.
[0028] In this technical solution, by setting up the pin hole 17, the annular block 13, the receiving hole 14, the pin 16 and the pressure spring 15, the pressure spring 15 can apply pressure to the pin 16 under the push of the pre-compression tension. During the process of personnel operating the metal tube 6 to rotate, the pin 16 can be inserted into the pin hole 17 at different positions, and can generate a certain resistance to the rotation of the metal tube 6, reducing the probability of the metal tube 6 rotating when operated by non-medical personnel.
[0029] Example 3:
[0030] Based on Embodiment 1, this utility model is as follows: Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, armrests 3 are fixedly installed on both sides of the dental chair body 1, a headrest 4 is fixedly installed at the middle of the top of the dental chair body 1, a base 2 is fixedly installed at the bottom of the dental chair body 1, a rubber anti-slip pad is fixedly connected to the bottom of the base 2, screws 18 are movably inserted at both ends of the air duct cover 10, fixing posts 19 are fixedly connected at both ends of the inner cavity of the air duct shell 5, the surface of the screws 18 is threaded to the right side of the fixing posts 19, and a pipe clamp 8 is fixedly installed at the upper left side of the dental chair body 1, with the surface of the tee pipe 9 movably inserted into the surface of the pipe clamp 8.
[0031] In this technical solution, the armrests 3 and headrests 4 provide support for the patient during treatment and also support the patient's head. The base 2 and rubber anti-slip pads provide support for the bottom of the dental chair body 1. The screws 18 and fixing posts 19 facilitate the installation between the air guide shell 5 and the air guide cover 10, and also make it convenient for medical staff to disassemble and clean the air guide shell 5 and the air guide cover 10 during later maintenance. The pipe clamps 8 secure the T-connector 9.
[0032] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit the scope of protection of this utility model. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the essence and scope of the technical solutions of this utility model.
Claims
1. A dental treatment table for preventing aerosol contamination, comprising a dental chair body (1), characterized in that: A fixing plate (7) is fixedly installed on the upper left side of the dental chair body (1). There are two fixing plates (7). A fixing cylinder (11) is fixedly connected to the bottom of the fixing plate (7). A metal rotating tube (6) is movably inserted between the middle end of the fixing cylinder (11) and the middle end of the fixing plate (7). An air guide shell (5) is fixedly connected to the top of the metal rotating tube (6). An air guide cover (10) is placed on the right side of the air guide shell (5). An air hole (20) is opened on the surface of the air guide cover (10). A rotary joint (12) is fixedly installed at the bottom of the metal rotating tube (6). A three-way pipe (9) is fixedly installed between the bottoms of the two rotary joints (12).
2. The dental treatment unit for preventing aerosol contamination according to claim 1, characterized in that: The bottom of the inner cavity of the fixed cylinder (11) is provided with a pin hole (17). The lower end of the metal rotating tube (6) is fixedly connected to an annular block (13). The surface of the annular block (13) is movably connected to the inner cavity of the fixed cylinder (11). The bottom of the annular block (13) is provided with receiving holes (14) around its perimeter. A pin (16) is movably connected between the lower end of the receiving hole (14) and the surface of the pin hole (17). A pressure spring (15) is placed between the top of the pin (16) and the top of the receiving hole (14).
3. The dental treatment unit for preventing aerosol contamination according to claim 2, characterized in that: The pin hole (17) is hemispherical in shape, and the lower end of the pin (16) is hemispherical.
4. The dental treatment unit for preventing aerosol contamination according to claim 1, characterized in that: Armrests (3) are fixedly installed on both sides of the dental chair body (1), and a headrest (4) is fixedly installed at the middle of the top of the dental chair body (1).
5. A dental treatment unit for preventing aerosol contamination according to claim 1, characterized in that: A base (2) is fixedly installed at the bottom of the dental chair body (1), and a rubber anti-slip pad is fixedly connected to the bottom of the base (2).
6. The dental treatment unit for preventing aerosol contamination according to claim 1, characterized in that: Both ends of the air guide cover (10) are movably inserted with screws (18), and both ends of the inner cavity of the air guide shell (5) are fixedly connected with fixing posts (19). The surface of the screws (18) is threadedly connected to the right side of the fixing posts (19).
7. A dental treatment unit for preventing aerosol contamination according to claim 1, characterized in that: A pipe clamp (8) is fixedly installed on the upper left side of the dental chair body (1), and the surface of the tee pipe (9) is movably inserted through the surface of the pipe clamp (8).