A tool holder assembly for preventing backflow of contaminants into a cell phone
By employing a reverse mechanical flow design and double sealing rings, the problem of contaminant backflow during dental surgery is solved, achieving equipment cleanliness and extending its service life while ensuring patient safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- XIAOFENG MEDICAL TECH (WUXI) CO LTD
- Filing Date
- 2025-07-24
- Publication Date
- 2026-07-07
AI Technical Summary
During dental surgery, a mixture of tooth debris, blood, and cooling water can easily flow back into the surgical handpiece through the connection between the drill bit and the handpiece or the cooling water channel due to negative pressure inside the equipment or structural design defects. This can lead to contamination and corrosion of the delicate components inside the handpiece, threatening patient safety and the lifespan of the equipment.
The reverse mechanical flow guiding design is adopted. By the thread groove direction of the through groove in the pipe interface being opposite to the tool rotation direction, a reverse centrifugal force field is formed to block the backflow of contaminants. Combined with the micron-level gap and thread groove, a liquid-gas barrier is formed with the cooling water jet to ensure physical isolation between the cooling water channel and the bearing cavity, and external contamination is isolated by double sealing rings.
It effectively blocks the backflow of pollutants, prevents contamination and corrosion of delicate internal components of mobile phones, extends the life of equipment, and ensures patient safety.
Smart Images
Figure CN224461829U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of mobile phones, and in particular to a tool clamping assembly for preventing impurities from flowing back into the mobile phone. Background Technology
[0002] In existing technologies, surgical handpieces (such as high-speed turbine handpieces) are core tools for cutting and grinding teeth during dental surgery. They achieve precise operation through a high-speed rotating drill bit, while simultaneously requiring cooling water flushing to reduce frictional heat and remove debris. However, existing technologies suffer from the following significant problems: Debris and bodily fluid backflow contamination: During surgery, a mixture of tooth debris, blood, and cooling water can easily flow back into the surgical handpiece through the drill-to-handle connection or cooling water channels due to internal negative pressure or structural design defects. This backflow not only leads to contamination and corrosion of delicate internal components (such as bearings and turbines) but may also cause bacterial growth, seriously threatening patient safety and the lifespan of the equipment. Utility Model Content
[0003] This application provides a tool clamping assembly to prevent impurities from flowing back into the surgical handpiece. This solves the problem in existing technologies where, during surgery, a mixture of tooth debris, blood, and cooling water can easily flow back into the surgical handpiece through the drill bit-to-handle connection or cooling water channels due to internal negative pressure or structural design defects. This backflow not only leads to contamination and corrosion of delicate internal components (such as bearings and turbines) but can also cause bacterial growth, seriously threatening patient safety and the lifespan of the equipment.
[0004] The technical solutions adopted in the embodiments of this application are as follows.
[0005] A tool clamping assembly for preventing impurities from flowing back into a mobile phone includes a ferrule, an outer tube disposed on the ferrule, a pipe interface that rotates on the outer tube, and a bearing that rotates the tool on the outer tube. The center lines of the ferrule, the outer tube, the pipe interface, and the bearing are all coaxial. The outer tube is embedded in one side of the ferrule. The pipe interface is embedded in one side of the outer tube. A through groove corresponding to the tool is formed in the pipe interface. A gap is left between the through groove and the tool. A threaded groove is formed on the side wall of the through groove to prevent the suction of blood, water, and bone fragments. The thread direction of the threaded groove is opposite to the rotation direction of the tool.
[0006] As a further improvement to the above technical solution: the outer pipe is welded to the pipe interface.
[0007] As a further improvement to the above technical solution: the bearings are sequentially arranged inside the outer tube.
[0008] One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:
[0009] 1. Due to the adoption of reverse mechanical flow guidance: the threaded groove on the side wall of the through groove inside the pipe interface is in the opposite direction to the rotation direction of the tool. When the drill bit rotates at high speed (usually clockwise), the threaded groove generates a counterclockwise spiral thrust, forming a reverse centrifugal force field, which pushes the mixture of blood, bone fragments and cooling water outward instead of sucking it into the internal channel, thus blocking the backflow path of contaminants from the source; the micron-level gap reserved between the through groove and the tool not only avoids frictional loss, but also forms a liquid-gas barrier through the synergistic effect of the threaded groove and the cooling water jet, further preventing the infiltration of fine particles; the coaxial design of the ferrule, outer pipe, and pipe interface ensures physical isolation between the cooling water channel and the bearing cavity; the bearing is built into the inner cavity of the outer pipe and is isolated from the external polluted environment by double sealing rings, preventing debris from entering and causing lubrication failure or jamming, thus extending the life of the high-speed turbine assembly. Attached Figure Description
[0010] Figure 1 This is a schematic diagram of the tool clamping assembly for preventing impurities from flowing back into the mobile phone in this utility model.
[0011] Figure 2 This is a cross-sectional view of the tool clamping assembly for preventing impurities from flowing back into the mobile phone in this utility model.
[0012] In the diagram: 1. Compression fitting; 2. External connector; 3. Pipe interface; 31. Through groove; 32. Threaded groove; 4. Bearing. Detailed Implementation
[0013] This application provides a tool clamping assembly to prevent impurities from flowing back into the surgical handpiece. This solves the problem in existing technologies where, during surgery, a mixture of tooth debris, blood, and cooling water can easily flow back into the surgical handpiece through the drill bit-to-handle connection or cooling water channels due to internal negative pressure or structural design defects. This backflow not only leads to contamination and corrosion of delicate internal components (such as bearings and turbines) but can also cause bacterial growth, seriously threatening patient safety and the lifespan of the equipment.
[0014] The technical solution in this application embodiment is to solve the above problems, and the overall idea is as follows:
[0015] To better understand the above technical solutions, the following will provide a detailed explanation of the technical solutions in conjunction with the accompanying drawings and specific implementation methods.
[0016] A tool clamping assembly for preventing impurities from flowing back into a mobile phone includes a retainer 1, an outer tube 2 disposed on the retainer 1, a tube interface 3 rotating on the outer tube 2, and a bearing 4 that allows the tool to rotate on the outer tube 2. The center lines of the retainer 1, the outer tube 2, the tube interface 3, and the bearing 4 are all coaxial. The outer tube 2 is embedded in one side of the retainer 1. The tube interface 3 is embedded in one side of the outer tube 2. A through groove 31 corresponding to the tool is provided in the tube interface 3. A gap is left between the through groove 31 and the tool. A threaded groove 32 is provided on the side wall of the through groove 31 to prevent the suction of blood, water, and bone fragments. The thread direction of the threaded groove 32 is opposite to the rotation direction of the tool.
[0017] The outer pipe 2 is welded to the pipe interface 3.
[0018] Bearing 4 is sequentially installed inside the outer tube 2.
[0019] Due to the adoption of reverse mechanical flow guidance: the threaded groove 32 on the side wall of the through groove 31 inside the pipe interface 3 is oriented in the opposite direction to the rotation direction of the tool. When the drill bit rotates at high speed (usually clockwise), the threaded groove 32 generates a counterclockwise spiral thrust, forming a reverse centrifugal force field, which pushes the mixture of blood, bone fragments and cooling water outward instead of sucking it into the internal channel, thus blocking the return path of contaminants from the source; the micron-level gap reserved between the through groove 31 and the tool not only avoids frictional wear, but also forms a liquid-gas barrier through the synergistic effect of the threaded groove 32 and the cooling water jet, further preventing the infiltration of fine particles; the coaxial design of the ferrule 1, the outer pipe 2, and the pipe interface 3 ensures physical isolation between the cooling water channel and the bearing 4 cavity; the bearing 4 is built into the inner cavity of the outer pipe 2 and is isolated from the external polluted environment through double sealing rings, preventing debris from entering and causing lubrication failure or jamming, thus extending the life of the high-speed turbine assembly.
[0020] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.
[0021] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.
Claims
1. A tool clamping assembly for preventing impurities from flowing back into a mobile phone, characterized in that, The device includes a ferrule (1), an outer tube (2) mounted on the ferrule (1), a pipe interface (3) that rotates on the outer tube (2), and a bearing (4) that rotates the cutting tool on the outer tube (2). The center lines of the ferrule (1), the outer tube (2), the pipe interface (3), and the bearing (4) are all coaxial. The outer tube (2) is embedded in one side of the ferrule (1). The pipe interface (3) is embedded in one side of the outer tube (2). A through groove (31) corresponding to the cutting tool is provided in the pipe interface (3). There is a gap between the through groove (31) and the cutting tool. A threaded groove (32) is provided on the side wall of the through groove (31) to prevent the suction of blood and bone fragments. The thread direction of the threaded groove (32) is opposite to the rotation direction of the cutting tool.
2. The tool clamping assembly for preventing impurities from flowing back into the mobile phone as described in claim 1, characterized in that, The external pipe (2) is welded to the pipe interface (3).
3. The tool clamping assembly for preventing impurities from flowing back into the mobile phone as described in claim 2, characterized in that, The bearing (4) is sequentially installed inside the outer tube (2).