CN111643208A - U-shaped single-sided toothbrush, arc-shaped single-sided toothbrush and tooth brushing method - Google Patents
U-shaped single-sided toothbrush, arc-shaped single-sided toothbrush and tooth brushing method Download PDFInfo
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- CN111643208A CN111643208A CN202010336151.XA CN202010336151A CN111643208A CN 111643208 A CN111643208 A CN 111643208A CN 202010336151 A CN202010336151 A CN 202010336151A CN 111643208 A CN111643208 A CN 111643208A
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- brush
- holder body
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/3409—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor characterized by the movement of the brush body
- A61C17/3445—Translation along the axis of the toothbrush handle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/222—Brush body details, e.g. the shape thereof or connection to handle
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
- A61C17/00—Devices for cleaning, polishing, rinsing or drying teeth, teeth cavities or prostheses; Saliva removers; Dental appliances for receiving spittle
- A61C17/16—Power-driven cleaning or polishing devices
- A61C17/22—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like
- A61C17/32—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating
- A61C17/34—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor
- A61C17/349—Power-driven cleaning or polishing devices with brushes, cushions, cups, or the like reciprocating or oscillating driven by electric motor with multiple brush bodies
Abstract
The invention discloses a U-shaped single-sided toothbrush, an arc-shaped single-sided toothbrush and a tooth brushing method. According to the toothbrush disclosed by the invention, the conventional double-sided or double-sided brush holder is changed into the single-sided or single-sided brush holder, so that the volume is reduced by half, the height or the width of the toothbrush body in the oral cavity is reduced (the height of the single-sided toothbrush is reduced, and the width of the single-sided toothbrush is reduced), the tooth brushing comfort of a user is improved, and the difficulty and the uncomfortable feeling of the user in the process of putting the toothbrush into the oral cavity and taking the toothbrush out of the oral cavity are reduced.
Description
Technical Field
The invention belongs to the field of toothbrushes, and particularly relates to a U-shaped single-sided toothbrush, an arc-shaped single-sided toothbrush and a tooth brushing method in the field.
Background
The Chinese patent application CN104783916A discloses an electric toothbrush, which comprises a handle, a first control unit, a motor and a brush head, wherein the first control unit is arranged on the handle, the handle is provided with a cavity, the motor is arranged in the cavity, the first control unit is electrically connected with the motor, the brush head comprises a support frame and gear brushes, the support frame is U-shaped and comprises a support frame outer frame and a support frame inner frame, the gear brushes are arranged between the support frame outer frame and the support frame inner frame, each gear brush in the gear brushes comprises a gear and brush bristles arranged on a plurality of surfaces of the gear brushes, each gear brush in the gear brushes is in gear engagement with an adjacent gear brush, and one of the gear brushes is connected with the motor. The electric toothbrush disclosed in the application has a large volume, a user is difficult to put into the oral cavity, the comfort level of brushing teeth is poor, and the electric toothbrush is not easy to take out of the oral cavity after brushing teeth.
Disclosure of Invention
The invention aims to solve the technical problem of providing a U-shaped single-sided toothbrush with small volume, an arc-shaped single-sided toothbrush and a tooth brushing method.
The invention adopts the following technical scheme:
in a U-shaped single-sided toothbrush, the improvement comprising: the toothbrush comprises a handle and a U-shaped brush holder body arranged on the handle, wherein a motor is arranged in the handle, the U-shaped brush holder body has elasticity, a brush head matched with upper teeth or lower teeth is arranged in the U-shaped brush holder body, the brush head is fixedly arranged on the U-shaped brush holder body through a shaft, bristles are arranged at the positions, opposite to the teeth and the occlusal surface, of the inner side of the brush head, and a driving shaft of the motor can drive the brush head to move in the U-shaped brush holder body.
Further, a waterproof baffle is arranged on the handle; the upper and lower jaw incisor opening and closing control block is arranged at the position opposite to the incisors in the U-shaped brush holder body.
Furthermore, the U-shaped brush seat body is composed of a U-shaped inner fixing seat and a U-shaped outer fixing seat, the U-shaped outer fixing seat is fixedly installed on the waterproof baffle through positioning features, and the positioning features include, but are not limited to, upper and lower round holes.
Further, the types of the brush heads include but are not limited to a brush head C, a brush head B and a brush head A, wherein the brush head C and the brush head B are arranged on the upper and lower jaw incisor opening and closing control block; the brush head C is provided with a special-shaped hole, a special-shaped driving shaft of the motor can be inserted into the special-shaped hole of the brush head C, and the two sides of the brush head C are respectively flexibly connected with other brush heads through the connecting driving part and can drive other brush heads to swing around the shaft of the other brush heads.
Furthermore, an alveolar ridge shape control block is arranged at the bottom of the U-shaped brush holder body to adjust the opening degree of the U-shaped brush holder body, and the alveolar ridge shape control block is occluded on the U-shaped brush holder body during tooth brushing, so that the shape of the U-shaped brush holder body is fixed.
Furthermore, the motor drives the output shaft to output movement with adjustable angle and rotation speed.
The improvement of a tooth brushing method using the U-shaped single-sided toothbrush is as follows: a gum-shaped control block is arranged at a proper position at the bottom of the U-shaped brush holder body to determine the opening degree of the U-shaped brush holder body, the U-shaped brush holder body is deformed inwards to be plugged into a mouth of a user, after the upper jaw dentition or the lower jaw dentition is occluded with the U-shaped brush holder body, the types of the brush heads include but are not limited to a brush head C, a brush head B and a brush head A, the brush head A, B, C are respectively opposite to corresponding teeth, the brush head C is driven by a driving shaft of a motor to swing left and right around a shaft of the motor to clean the teeth and gum near the brush head, the brush head C drives the brush head B and the brush head A on two sides of the brush head to synchronously swing left and right around the shaft of the brush head C, so that automatic single-side tooth brushing is realized.
An arc-shaped single-side toothbrush, the improvement of which is that: including the handle with install the arc fixing base on the handle, install the motor in the handle, set up in the arc fixing base with the left half tooth or the brush head that half right tooth is corresponding, brush head through axle fixed mounting on the arc fixing base to install the brush hair on the brush head inboard and tooth and occlusal surface relative position, the drive shaft of above-mentioned motor can drive brush head and swing around its axle in the arc fixing base.
Furthermore, a baffle is arranged on the handle, the arc-shaped fixed seat consists of an arc-shaped inner fixed seat and an arc-shaped outer fixed seat, and the arc-shaped outer fixed seat is fixedly arranged on the baffle through a positioning feature; the locating features include, but are not limited to, upper and lower circular holes; an upper and lower jaw incisor distance control block is also arranged on the arc-shaped inner fixed seat or the arc-shaped outer fixed seat; types of brush heads include, but are not limited to, those located at brush head C, brush head B, and brush head a; the brush head C is provided with a special-shaped hole, a special-shaped driving shaft of the motor can be inserted into the special-shaped hole of the brush head C, and the brush head C is flexibly connected with other brush heads and can drive other brush heads to swing around the shaft of the other brush heads; the motor drives the output shaft to output movement with adjustable angle and rotating speed.
In a method of brushing teeth using the above-described curved single-sided toothbrush, the improvement comprising: after the left half part of teeth or the right half part of teeth are meshed with the arc-shaped fixed seat, the brush head A, B, C is respectively opposite to corresponding teeth, the drive shaft of the motor drives the brush head C to swing left and right around the shaft of the brush head C to clean the teeth and gum near the brush head, the brush head C drives the brush head B and the brush head A to synchronously swing left and right around the shaft of the brush head C, so that automatic one-side tooth brushing is realized, and after the left half part of teeth or the right half part of teeth are brushed, the toothbrush is horizontally turned, and then the other side of teeth can be brushed.
The invention has the beneficial effects that:
according to the toothbrush disclosed by the invention, the conventional double-sided or double-sided brush holder is changed into the single-sided or single-sided brush holder, so that the volume is reduced by half, the height or the width of the toothbrush body in the oral cavity is reduced (the height of the single-sided toothbrush is reduced, and the width of the single-sided toothbrush is reduced), the tooth brushing comfort of a user is improved, and the difficulty and the uncomfortable feeling of the user in the process of putting the toothbrush into the oral cavity and taking the toothbrush out of the oral cavity are reduced.
The tooth brushing method of the U-shaped single-sided toothbrush disclosed by the invention can firstly brush the upper jaw dentition or the lower jaw dentition, and then horizontally turn over the toothbrush to clean the opposite side dentition, so that the tooth cleaning effect is better.
The tooth brushing method of the arc-shaped unilateral toothbrush disclosed by the invention can firstly brush the left upper and lower jaw dentition or the right upper and lower jaw dentition, and then horizontally turn the toothbrush to clean the opposite upper and lower jaw dentition, so that the tooth cleaning effect is better.
Drawings
FIG. 1 is a schematic view showing an exploded structure of a U-shaped single-sided toothbrush disclosed in example 1 of the present invention;
FIG. 2 is a schematic structural view of a U-shaped brush holder body of the U-shaped single-sided toothbrush disclosed in embodiment 1 of the present invention;
FIG. 3 is a schematic view showing the fitting relationship between the U-shaped brush holder body and the gum shape control block in the U-shaped single-sided toothbrush disclosed in embodiment 1 of the present invention;
FIG. 4 is a schematic view showing the structure of the curved single-sided toothbrush disclosed in example 1 of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the embodiment, the handle is provided with the waterproof baffle sheet 8, the position of the waterproof baffle sheet can be axially adjusted, and the waterproof baffle sheet can be positioned in the mouth or attached to the outer wall of the mouth during tooth brushing to prevent liquid from splashing; the upper and lower jaw incisor opening and closing control block 10 is installed at the position opposite to incisors in the U-shaped brush holder body, and the distance between the upper and lower jaw incisors can be controlled by the upper and lower jaw incisor opening and closing control block, so that the toothbrush is matched with teeth.
The U-shaped brush seat body is composed of a U-shaped inner fixing seat and a U-shaped outer fixing seat, the U-shaped outer fixing seat is fixedly installed on the waterproof baffle through positioning features, and the positioning features include but are not limited to upper and lower round holes.
The types of the brush heads include but are not limited to a brush head C3, a brush head B2 and a brush head A1, wherein the brush head C and the brush head B are arranged on an upper and lower incisor opening and closing control block; the brush head C is provided with a special-shaped hole, a special-shaped driving shaft of the motor can be inserted into the special-shaped hole of the brush head C, and the two sides of the brush head C are respectively flexibly connected with other brush heads through the connecting driving part 4 and can drive other brush heads to swing around the shaft of the other brush heads. As an alternative mode, the brush head C is opposite to an incisor part, the brush head B is opposite to a cuspid part, the brush head A is opposite to a molar part and a front molar part, and the brush head B adopts single-side bristles or an inner and outer double brush head with a bristle area being small inside and large outside; the brush head A is provided with a flat connecting part at the position opposite to the occlusal surface of the molar and the premolar, and the connecting part is provided with bristles at the position opposite to the occlusal surface of the molar and the premolar.
A gum-shaped control block 7 is arranged at the bottom of the U-shaped brush holder body to adjust the opening degree of the U-shaped brush holder body, and the alveolar ridge-shaped control block is occluded on the U-shaped brush holder body during tooth brushing, so that the shape of the U-shaped brush holder body is fixed. The following illustrates the fitting relationship between the U-shaped brush holder body and the alveolar ridge shape control block:
as shown in FIG. 2, the inner parts of the two sides of the U-shaped brush holder body are respectively cut off partial materials, when the two sides of the U-shaped brush holder body are stressed, the U-shaped brush holder body can deform inwards. A row of bilaterally symmetrical waist-shaped holes are vertically arranged on the U-shaped brush holder body, a plurality of hole-shaped structures are arranged on the upper and lower incisor opening and closing control blocks, represent the tooth socket ridge-shaped large and small gears and can correspond to the waist-shaped holes. When the U-shaped brush holder body needs to be deformed to a required gear shape, the alveolar ridge shape limiting pin 12 is inserted into the hole-shaped structure and the waist-shaped hole of the upper and lower incisor opening and closing control block corresponding to the gear shape, so that the maximum shape of the U-shaped brush holder body during stress deformation can be restrained. Because of the structural characteristic of the waist-shaped hole on the U-shaped brush seat body, the U-shaped brush seat body can still deform towards the inner side when stressed, and the toothbrush can be easily put into the oral cavity when the teeth are brushed conveniently. The limit screw 13 passes through the U-shaped brush holder body 5 and the opening and closing control block 10 for the incisor teeth of the upper jaw and the lower jaw and is screwed into a corresponding hole of the alveolar ridge shape control block 7. The alveolar ridge shape control block is fixed on the U-shaped brush holder body through a connecting screw 11, and a spring 6 is arranged in the middle of the alveolar ridge shape control block. The bottom surface of the U-shaped brush holder body is provided with a convex feature, the top of the alveolar ridge shape control block is provided with a convex rack feature, and the alveolar ridge shape control block 7 is elastically controlled at a position away from the U-shaped brush holder body 5 under the action of the spring 6 and the limit screw 13. After the U-shaped brush holder body 5 is well adjusted in shape and limited at the maximum position corresponding to the gear by the limiting pin, the two sides of the U-shaped brush holder body are stressed and deform inwards, the U-shaped brush holder body is placed in an oral cavity, the U-shaped brush holder body is restored to the maximum gear position or the proper matched gum shape position under the action of body elasticity, teeth are occluded, and under the action of occlusion force, the alveolar ridge shape control block 7 compression spring 6 is attached to the U-shaped brush holder body 5, as shown in figure 3, the convex features 51 on the bottom surface of the U-shaped brush holder body are engaged with the rack features 71 on the top of the alveolar ridge shape control block, so that the U-shaped brush holder body is fixed in shape and cannot be stressed, contracted.
The motor drives the output shaft to output movement with adjustable angle and rotating speed.
The embodiment also discloses a tooth brushing method, the U-shaped single-sided toothbrush is used, the alveolar ridge shape control block is installed at a proper position at the bottom of the U-shaped brush holder body to determine the opening degree of the U-shaped brush holder body, the U-shaped brush holder body is deformed inwards so as to be plugged into a mouth of a user, after the upper jaw dentition or the lower jaw dentition bites the U-shaped brush holder body, the types of the brush heads include but are not limited to a brush head C, a brush head B and a brush head A, the brush head A, B, C are respectively opposite to corresponding teeth, the brush head C is driven by a driving shaft of a motor to swing left and right around the shaft of the brush head C, the teeth near the brush head are cleaned, the brush head C drives the brush heads B and the brush head A on two sides to synchronously swing left and right around the shaft of the brush head C, so that automatic single-sided tooth brushing is realized, and.
As shown in fig. 4, the present embodiment further discloses an arc-shaped single-side toothbrush, which comprises a handle and an arc-shaped fixing seat installed on the handle, wherein a motor is installed in the handle, a brush head corresponding to the upper and lower jaw dentitions of the left half part or the upper and lower jaw dentitions of the right half part is arranged in the arc-shaped fixing seat, the brush head is fixedly installed on the arc-shaped fixing seat through a shaft, bristles are installed at positions, opposite to teeth and the occlusal surface, on the inner side of the brush head, and a driving shaft of the motor can drive the brush head to swing around the shaft.
In the embodiment, the handle is provided with the baffle, the arc-shaped fixed seat consists of an arc-shaped inner fixed seat and an arc-shaped outer fixed seat, and the arc-shaped outer fixed seat is fixedly arranged on the baffle through a positioning feature; the locating features include, but are not limited to, upper and lower circular holes; an upper and lower jaw incisor distance control block is also arranged on the arc-shaped inner fixed seat or the arc-shaped outer fixed seat; types of brush heads include, but are not limited to, those located at brush head C, brush head B, and brush head a; the brush head C is provided with a special-shaped hole, a special-shaped driving shaft of the motor can be inserted into the special-shaped hole of the brush head C, and the brush head C is flexibly connected with other brush heads and can drive other brush heads to swing around the shaft of the other brush heads; the motor drives the output shaft to output movement with adjustable angle and rotating speed.
The embodiment also discloses a tooth brushing method, after the left upper and lower jaw dentitions or the right upper and lower jaw dentitions are occluded with the arc-shaped fixed seat by using the arc-shaped single-side toothbrush, the types of the brush heads include but are not limited to a brush head C, a brush head B and a brush head A, the brush head A, B, C is respectively opposite to corresponding teeth, the brush head C is driven by a driving shaft of a motor to swing left and right around the shaft of the brush head C to clean the teeth near the brush head, the brush head C drives the brush head B and the brush head A to synchronously swing left and right around the shaft of the brush head C, so that automatic single-side tooth brushing is realized, and after the left upper and lower jaw dentitions or the right upper and lower jaw.
Claims (10)
1. A U-shaped single-sided toothbrush, characterized in that: the toothbrush comprises a handle and a U-shaped brush holder body arranged on the handle, wherein a motor is arranged in the handle, the U-shaped brush holder body has elasticity, a brush head matched with upper teeth or lower teeth is arranged in the U-shaped brush holder body, the brush head is fixedly arranged on the U-shaped brush holder body through a shaft, bristles are arranged at the positions, opposite to the teeth and the occlusal surface, of the inner side of the brush head, and a driving shaft of the motor can drive the brush head to move in the U-shaped brush holder body.
2. A U-shaped single sided toothbrush as claimed in claim 1 wherein: a waterproof baffle is arranged on the handle; the upper and lower jaw incisor opening and closing control block is arranged at the position opposite to the incisors in the U-shaped brush holder body.
3. A U-shaped single sided toothbrush as claimed in claim 2 wherein: the U-shaped brush seat body is composed of a U-shaped inner fixing seat and a U-shaped outer fixing seat, the U-shaped outer fixing seat is fixedly installed on the waterproof baffle through positioning features, and the positioning features include but are not limited to upper and lower round holes.
4. A U-shaped single sided toothbrush as claimed in claim 3 wherein: the types of the brush heads include but are not limited to a brush head C, a brush head B and a brush head A, wherein the brush head C and the brush head B are arranged on an upper and lower jaw incisor opening and closing control block; the brush head C is provided with a special-shaped hole, a special-shaped driving shaft of the motor can be inserted into the special-shaped hole of the brush head C, and the two sides of the brush head C are respectively flexibly connected with other brush heads through the connecting driving part and can drive other brush heads to swing around the shaft of the other brush heads.
5. A U-shaped single sided toothbrush as claimed in claim 1 wherein: the U-shaped brush holder body is provided with an alveolar ridge shape control block at the bottom thereof to adjust the opening degree of the U-shaped brush holder body, and the alveolar ridge shape control block is occluded on the U-shaped brush holder body during tooth brushing so as to fix the shape of the U-shaped brush holder body.
6. A U-shaped single sided toothbrush as claimed in claim 1 wherein: the motor drives the output shaft to output movement with adjustable angle and rotating speed.
7. A method of brushing teeth using the U-shaped single-sided toothbrush of claim 5, wherein: a gum-shaped control block is arranged at a proper position at the bottom of the U-shaped brush holder body to determine the opening degree of the U-shaped brush holder body, the U-shaped brush holder body is deformed inwards to be plugged into a mouth of a user, after the upper jaw dentition or the lower jaw dentition is occluded with the U-shaped brush holder body, the types of the brush heads include but are not limited to a brush head C, a brush head B and a brush head A, the brush head A, B, C are respectively opposite to corresponding teeth, the brush head C is driven by a driving shaft of a motor to swing left and right around a shaft of the motor to clean the teeth and the gum near the brush head, the brush head C drives the brush head B and the brush head A at the two sides of the brush head to synchronously swing left and right around the shaft of the brush head C, so that automatic single-side tooth brushing is realized.
8. An arc unilateral toothbrush, characterized in that: including the handle with install the arc fixing base on the handle, install the motor in the handle, set up in the arc fixing base with the left half tooth or the brush head that half right tooth is corresponding, brush head through axle fixed mounting on the arc fixing base to install the brush hair on the brush head inboard and tooth and occlusal surface relative position, the drive shaft of above-mentioned motor can drive brush head and swing around its axle in the arc fixing base.
9. The arcuate one-sided toothbrush of claim 8, wherein: the handle is provided with a baffle, the arc-shaped fixed seat consists of an arc-shaped inner fixed seat and an arc-shaped outer fixed seat, and the arc-shaped outer fixed seat is fixedly arranged on the baffle through a positioning characteristic; the locating features include, but are not limited to, upper and lower circular holes; an incisor distance control block is also arranged on the arc-shaped inner fixed seat or the arc-shaped outer fixed seat; types of brush heads include, but are not limited to, those located at brush head C, brush head B, and brush head a; the brush head C is provided with a special-shaped hole, a special-shaped driving shaft of the motor can be inserted into the special-shaped hole of the brush head C, and the brush head C is flexibly connected with other brush heads and can drive other brush heads to swing around the shaft of the other brush heads; the motor drives the output shaft to output movement with adjustable angle and rotating speed.
10. A method of brushing teeth using the curved single sided toothbrush of claim 9, wherein: after the left half part of teeth or the right half part of teeth are meshed with the arc-shaped fixed seat, the types of the brush heads include but are not limited to a brush head C, a brush head B and a brush head A, the brush head A, B, C is respectively opposite to corresponding teeth, the brush head C is driven by a driving shaft of a motor to swing left and right around the shaft of the motor to clean teeth and gum nearby the brush head, the brush head C drives the brush head B and the brush head A to synchronously swing left and right around the shaft of the brush head B and the brush head A, so that automatic single-side tooth brushing is realized, and after the left half part of teeth or the right half part of teeth are brushed, the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010336151.XA CN111643208A (en) | 2020-04-25 | 2020-04-25 | U-shaped single-sided toothbrush, arc-shaped single-sided toothbrush and tooth brushing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010336151.XA CN111643208A (en) | 2020-04-25 | 2020-04-25 | U-shaped single-sided toothbrush, arc-shaped single-sided toothbrush and tooth brushing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111643208A true CN111643208A (en) | 2020-09-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010336151.XA Pending CN111643208A (en) | 2020-04-25 | 2020-04-25 | U-shaped single-sided toothbrush, arc-shaped single-sided toothbrush and tooth brushing method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111643208A (en) |
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2020
- 2020-04-25 CN CN202010336151.XA patent/CN111643208A/en active Pending
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