Trap-pull type dental floss stick
By designing floss picks consisting of 2 to 4 floss strands, and utilizing a mesh-like covering structure to pull and clean food debris laterally, the problem of existing floss picks being unable to clean food debris stuck between teeth is solved, improving cleaning efficiency and reducing damage to the gums.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- SUN HAICHAO
- Filing Date
- 2025-11-30
- Publication Date
- 2026-07-02
AI Technical Summary
Existing dental floss picks are difficult to pull horizontally when cleaning larger, more tightly packed, or food debris stuck between teeth, and long-term use can damage the gums.
Design a dental floss pick, in which the dental floss consists of a bundle of 2 to 4 flosses, with both ends of the bundle fixed to a floss holder. The spacing between the flosses in the bundle is controlled within a specific range to form a net-like coverage. Food debris is removed by pulling it horizontally, reducing contact with the gums.
It enables the horizontal cleaning of food debris along the inner and outer sides of the teeth, improving cleaning efficiency, reducing damage to the gums, and effectively cleaning larger, more tightly packed, or completely blocked food debris.
Smart Images

Figure CN2025138842_02072026_PF_FP_ABST
Abstract
Description
Pull-up dental floss picks Technical Field
[0001] This invention belongs to the field of oral care technology, specifically a dental floss pick for cleaning teeth. Background Technology
[0002] Dental floss picks typically consist of a roughly U-shaped floss holder and a handle. The end of the handle is designed like a toothpick, and the two ends of the floss are fixedly connected to the two ends of the U-shaped opening of the floss holder. The functions of dental floss picks are twofold: to remove food debris from between teeth and to remove plaque and soft deposits from the tooth surfaces on both sides of the gaps between teeth. Dental floss holders commonly come in three designs: single floss, double parallel floss, and double "X" shaped intersecting floss. Regardless of the design on the floss pick, the floss can only be pushed horizontally into the interdental spaces until the gums begin to clean. When using it, the floss is placed horizontally in the interdental space. Hold the floss close to one side of the teeth and repeatedly pull it towards the top of the interdental space (vertically to the horizontal direction of the floss). This creates a scraping surface on the teeth, removing food debris, plaque, and soft deposits from the interdental space. If the floss is pulled horizontally along the inner or outer side of the interdental space, the pulling force on food debris, plaque, and soft deposits is minimal and has no cleaning effect. Therefore, dental floss picks are not used for horizontal pulling to clean food debris, plaque, and soft deposits in interdental spaces. This type of floss pick, which can only be pulled upwards and not horizontally, has the following two disadvantages:
[0003] Disadvantage 1: When encountering large food debris tightly packed between teeth, especially when the food debris fills the gaps, the floss cannot be pressed horizontally into the gum line. The floss can only slide on the surface of the food debris and cannot form a scraping surface on the tooth surface, so the food debris cannot be cleaned. If you force too much pressure to push the floss into the food debris, it will further compress the food debris, making it even more tightly stuck in the gaps between the teeth, and it will be even more difficult to clean the food debris from the top of the gaps. At the same time, since the floss cannot be pressed horizontally into the gum line, it is impossible to clean the plaque and soft deposits on the tooth surface. The "X" shaped design of the double floss, with the intersection point located at the center of the two flosses, has greater resistance when pressing the floss into the food debris, making it even more difficult to clean the food debris from the gaps between the teeth.
[0004] The second drawback is that the gaps between teeth are characterized by wide gaps on the inner and outer sides of the lower teeth and narrow gaps between the upper teeth. It is difficult to clean larger food debris that fills the gaps through the narrow gaps at the top of the teeth. The best way is to take advantage of the wide gaps on the inner and outer sides of the lower teeth to clean the food debris from the lower part of the gap. However, the fact that dental floss sticks always run horizontally in the gap means that they do not have the function of pulling horizontally along the inner and outer sides of the gap to clean food debris.
[0005] Due to the two drawbacks mentioned above, dental floss picks cannot be used directly when encountering large food debris tightly packed between teeth, especially when food debris completely fills the gaps. Usually, a toothpick must first be used to remove as much of the food debris as possible to loosen the remaining debris before the floss can be pushed horizontally into the gap to the gum line in a sawing motion to clean away the remaining food debris, plaque, and soft deposits. This is why the handle of dental floss picks is usually designed with a toothpick as a pre-emptive tool for removing food debris. Using toothpicks can cause significant damage to the gums. Because dental floss picks require pushing the floss horizontally into the gum line to clean food debris, plaque, and soft deposits, long-term use can also cause considerable damage to the gums, making them a type of dental floss pick that can damage the gums. Summary of the Invention
[0006] (a) Technical problems to be solved
[0007] To address the shortcomings of existing technologies, this invention provides a dental floss pick that retains the existing upward-pulling cleaning function while forming a mesh-like coverage for food debris. This allows the floss pick to pull food debris laterally along the inner and outer sides of the teeth, cleaning it out through the wide gaps on both sides of the lower part of the gap. This solves the problem of existing technologies being unable to clean larger, tighter, or clogged food debris. By pulling food debris laterally along the inner and outer sides of the teeth, the floss can clean the teeth with almost no contact with the gums, causing no damage to the gums.
[0008] (II) Technical Solution
[0009] To achieve the above objectives, the present invention is implemented in the following ways:
[0010] 1. A dental floss pick, comprising a dental floss holder, two rods at the opening of the dental floss holder, and dental floss, characterized in that: the dental floss is a bundle of two or more dental flosses, the two ends of the dental flosses forming the bundle are fixedly connected to the rods at the opening of the dental floss holder, and the distance X between the center points of the cross sections of two adjacent dental flosses at the fixed connection point of the rods at the opening of the dental floss holder is less than the sum of the radii D of the two adjacent dental flosses.
[0011] 2. A dental floss pick, comprising a dental floss holder, two rods at the opening of the dental floss holder, and dental floss, characterized in that: the dental floss is a bundle of two or more dental flosses, the two ends of the dental flosses forming the bundle are fixedly connected to the two rods at the opening of the dental floss holder, and the distance X between the center points of the cross sections of two adjacent dental flosses at the fixed connection point of the rods at the opening of the dental floss holder is greater than or equal to the sum of the radii of the two adjacent dental flosses, and D is less than D plus 0.8 mm.
[0012] 3. A dental floss pick, comprising a dental floss holder, two rods at the opening of the dental floss holder, and dental floss, characterized in that: the dental floss is a bundle of 2 to 4 dental flosses, the two ends of the dental flosses forming the bundle are fixedly connected to the two rods at the opening of the dental floss holder, and the distance X between the center points of the cross sections of two adjacent dental flosses at the fixed connection point of the two rods at the opening of the dental floss holder is less than the sum of the radii D of the two adjacent dental flosses.
[0013] 4. A dental floss pick, comprising a dental floss holder, two ends of the dental floss holder opening, and dental floss, characterized in that: the dental floss is a bundle of 2 to 4 dental flosses, the two ends of the dental flosses forming the bundle are fixedly connected to the two ends of the dental floss holder opening, and the distance X between the center points of the cross sections of two adjacent dental flosses at the fixed connection point of the two ends of the dental floss holder opening is greater than or equal to the sum of the radii of the two adjacent dental flosses, D is less than D plus 0.8 mm.
[0014] In this invention, each floss has two ends. The ends on the same side of each floss are brought together to form the floss bundle end, which is fixedly connected to the two ends of the floss holder. The other parts of the floss are parallel to each other and not connected or tangled. When the floss bundle is pressed horizontally into the gap between the teeth and comes into contact with food debris, it is only necessary to press lightly on the surface of the food debris and move back and forth in a direction perpendicular to the floss bundle. The elasticity of the floss causes the floss in the middle section of the bundle to elastically separate due to the food debris trapped in it. This forms a net-like cover for the food debris, with the two bundle ends gathered together in the middle. At this time, it is pulled horizontally along the gap between the teeth in a sawing motion. The two bundle ends of the gathered floss bundle will exert a large pulling force on the food debris. The pulling force is significantly improved compared with the linear sliding friction between the floss and the teeth in existing floss sticks. It is large enough to loosen the food debris stuck in the gap between the teeth, tear the surface of the food debris and drag it out of the gap. Moreover, it is a horizontal pulling and will not compress or compact the food debris. Through this repeated scooping and cleaning process, which first forms a net-like covering and then pulls, food debris is continuously torn apart layer by layer and cleaned out of the gaps between teeth. Some relatively small and soft food debris will also be cleaned at once. Throughout the entire cleaning process, until the last small portion of food debris is removed from the gaps between teeth, the net-like covering formed by the dental floss bundle only comes into contact with the food debris and hardly touches the gums, causing almost no damage to the gums. After cleaning the food debris, the horizontal scooping motion is used to clean plaque and soft deposits. This can also be combined with the upward pulling method of existing dental floss picks to clean plaque and soft deposits. The difference is that the dental floss bundle is composed of multiple parallel overlapping flosses. When the same pressure is applied to the gums, the pressure on the gums is greatly reduced compared to applying a single floss, and the damage to the gums is also greatly reduced. When the dental floss bundle is pulled upward to clean plaque and soft deposits, multiple flosses clean the tooth surface at the same time. Compared with cleaning with a single floss, the cleaning efficiency and effect are multiplied. The dental floss bundle of the present invention is most effective when composed of 2 to 4 dental flosses to form a net-like covering. The number of dental flosses in the dental floss bundle should not be too many, and should not exceed 6 at most. Otherwise, it will be difficult to press into the gaps between teeth, and if there are too many dental flosses, they will easily become entangled and difficult to separate to form a net-like covering.The effectiveness of the floss bundle in forming a net-like coverage also depends on the distance X between the center points of the cross-sections of adjacent floss ends at the connection points between the floss bundle ends and the two ends of the floss holder opening. When X is greater than the sum of the radii of two adjacent flosses, D plus 0.8 mm, the floss in the floss pick is arranged in parallel and completely isolated, failing to form a net-like coverage. Only when X is less than or equal to the sum of the radii of two adjacent flosses, D plus 0.8 mm, can an effective net-like coverage be formed. When the floss bundle is pulled laterally, the two ends can exert a certain pulling force on food debris. Especially when X is less than D, the floss ends of the floss bundle fixed to the two ends of the floss holder opening will partially or completely overlap. At this time, the remaining parts of the floss that make up the floss bundle are in a parallel overlapping state, forming a net-like coverage. The pulling force generated by pulling food debris laterally is the greatest, and the effect of cleaning food debris is the best.
[0015] (III) Beneficial Effects
[0016] Due to the adoption of the above technical solution, the present invention has the following main features:
[0017] (1) The floss pick has the function of horizontally pulling and cleaning food debris along the inner and outer sides of the teeth, which makes the floss pick capable of cleaning larger and tighter food debris or even filling the gaps between teeth. It solves the problem that it is difficult to clean tightly packed food debris when pulling upwards, and becomes a dual-function floss pick that can be pulled upwards and horizontally to clean.
[0018] (2) Dental floss picks are used to clean by pulling upwards. Compared with existing technologies, they cause less damage to the gums and improve cleaning efficiency many times over.
[0019] (3) Dental floss picks clean food debris horizontally without touching the gums, causing no damage to the gums, and are therefore gum-free dental floss picks. Attached Figure Description
[0020] Figure 1 is a schematic diagram of the structure of the front view of the present invention.
[0021] Figure 2 is a partially enlarged schematic diagram (left view) of the connection point between the dental floss bundle and the fixed rods at both ends of the dental floss holder opening of the present invention.
[0022] Figure 3 is a schematic diagram showing the dental wire bundle of the present invention being split in the middle into a net-like covering when in use. Detailed Implementation
[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0024] In the attached diagram, 1 is the dental floss holder, 2 is the handle, 3 is the right end rod of the dental floss holder, 4 is the fixed connection point between the right end of the dental floss bundle and the right end rod 3 of the dental floss holder, 5 is the dental floss bundle, 6 is dental floss one, 7 is dental floss two, 8 is the left end rod of the dental floss holder, 9 is the fixed connection point between the left end of the dental floss bundle and the left end rod 8 of the dental floss holder, 10 is the center point of the cross-section of dental floss one 6, 11 is the distance between the center points of the cross-sections of dental floss one 6 and dental floss two 7 (the dotted line in attached diagram 2) X, and 12 is the center point of the cross-section of dental floss two 7.
[0025] In this embodiment, two dental flosses (floss 1, 6; floss 2, 7) form a floss bundle 5, typically with floss 1, 6, and 7 roughly parallel and overlapping. The floss bundle 5 is connected to the left and right ends of the floss holder. The left end of the floss bundle formed by the left ends of floss 1, 6, and 7 is fixedly connected to connection point 9 on the left end of the floss holder, while the right end is fixedly connected to connection point 4 on the right end of the floss holder. 11 represents the distance X (the dotted line in the figure) between the center point 10 of the cross-section of floss 1, 6, and 7. The shorter X is, the more tightly the two ends of the floss bundle converge, resulting in a greater pulling force on food debris after forming a net-like covering. The sum of the radii of floss 1, 6, and 7 is D; typically, the two flosses have the same diameter. When X is less than D, the circumferences of dental floss 6 and dental floss 7 intersect and overlap, and the other parts of dental floss 6 and dental floss 7 overlap parallel to each other, forming a net-like cover that generates the greatest pulling force on food residue, and the net-like cleaning of food residue is the most effective. Dental floss 6 and dental floss 7 are only fixedly connected at their ends to form a floss bundle. The rest of dental floss 6 and dental floss 7 are parallel to each other and not connected. This allows the floss bundle to be pressed into the interdental spaces. No matter which direction it comes into contact with food debris, as long as it is gently pressed against the surface of the food debris and moved back and forth, the floss in the middle of the bundle will elastically separate due to the food debris it traps. This forms a net-like coverage of the food debris, with the two ends gathered together, as shown in Figure 3. Dental floss 6 and dental floss 7, which make up dental floss bundle 5, are separated. At this time, the floss bundle is pulled horizontally along the interdental spaces on the inside and outside of the teeth in a sawing motion. The two gathered ends of the floss bundle will apply a sufficiently large pulling force to the food debris, which will loosen the food debris stuck in the interdental spaces. The surface debris will be torn apart and dragged out of the interdental spaces. This process is repeated until all the food debris is cleaned. After cleaning the food debris, the same method is used to clean plaque and soft deposits. It can also be used in combination with the existing dental floss pick cleaning method. When this invention is implemented, the dental floss bundle is pressed into the gap between the teeth. Dental floss 6 and dental floss 7 will separate from the middle of the dental floss and enter the gap between the teeth one by one. The difficulty is the same as that of pressing a single piece of dental floss into the gap between the teeth with existing dental floss picks.
[0026] In practical applications, the present invention can be further improved by setting two or more bundles of dental floss on the dental floss holder based on the above embodiments. However, these designs are not fundamentally different from the present invention and are all within the scope of protection of the present invention.
Claims
1. A pull-type dental floss pick, comprising a dental floss holder, two bars at the opening of the dental floss holder, and dental floss, characterized in that: Dental floss is a bundle of two or more dental flosses. The two ends of the dental flosses that make up the bundle are fixedly connected to the two ends of the opening of the dental floss holder. The distance X between the center points of the cross sections of two adjacent dental flosses at the fixed connection point of the opening of the dental floss holder is less than the sum of the radii D of the two adjacent dental flosses.
2. A pull-type dental floss pick, comprising a floss holder, two bars at the opening of the floss holder, and dental floss, characterized in that: Dental floss is a bundle of two or more dental flosses. The two ends of the dental flosses that make up the bundle are fixedly connected to the two ends of the opening of the dental floss holder. The distance X between the center points of the cross sections of two adjacent dental flosses at the fixed connection point of the opening of the dental floss holder is greater than or equal to the sum of the radii of the two adjacent dental flosses, and D is less than D plus 0.8mm.
3. A pull-type dental floss pick, comprising a floss holder, two bars at the opening of the floss holder, and dental floss, characterized in that: Dental floss consists of a bundle of 2 to 4 pieces of dental floss. The two ends of each piece of dental floss are fixedly connected to the two ends of the opening of the dental floss holder. The distance X between the center points of the cross sections of two adjacent pieces of dental floss at the fixed connection point of the opening of the dental floss holder is less than the sum of the radii D of the two adjacent pieces of dental floss.
4. A pull-type dental floss pick, comprising a floss holder, two bars at the opening of the floss holder, and dental floss, characterized in that: Dental floss consists of a bundle of 2 to 4 pieces of dental floss. The two ends of each piece of dental floss are fixedly connected to the two ends of the opening of the dental floss holder. The distance X between the center points of the cross sections of two adjacent pieces of dental floss at the fixed connection point of the opening of the dental floss holder is greater than or equal to the sum of the radii D of the two adjacent pieces of dental floss and less than D plus 0.8 mm.