A suction cannula for the oral cavity with the function of a mouth mirror.
The suction cannula addresses the limitations of existing designs by incorporating an elliptical lens, multiple absorption tubes, and a torsion spring mechanism to enhance fluid absorption and single-handed operation, ensuring effective and safe oral cavity treatments.
Patent Information
- Authority / Receiving Office
- DE · DE
- Patent Type
- Utility models
- Current Assignee / Owner
- HOU LUJUAN WENCHANG CITY
- Filing Date
- 2026-04-08
- Publication Date
- 2026-05-28
AI Technical Summary
Existing suction cannulas for the oral cavity are ineffective in absorbing fluids from narrow interdental spaces and alveoli, and the round lens design fails to extend into these areas, leading to potential tissue damage and the need for four-handed coordination during clinical treatments.
A suction cannula with an elliptical lens and multiple absorption tubes, including a main absorption tube, first and second absorption tubes, and a torsion spring mechanism for adjustable angle, along with a silicone sleeve for tissue protection and anti-fog coating for clarity, enhances fluid absorption and ease of use.
The suction cannula effectively absorbs fluids from narrow spaces, protects oral tissues, and allows single-handed operation, improving clinical efficiency and safety.
Smart Images

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Abstract
Description
Technical field
[0001] The present utility model relates to the technical field of the suction cannula, specifically a suction cannula for an oral cavity with a function of a mouth mirror. State of the art
[0002] Oral cavity suction is a treatment process aimed at addressing various clinical diseases of the oral cavity. Existing oral cavity suction cannulas only serve to draw out fluids and cannot provide adequate protection for the surrounding tissues. Therefore, there remains a risk of tissue damage during clinical treatment. Furthermore, using existing suction cannulas requires the coordination of four hands between the doctor and nurse, a requirement that cannot be met, thus representing a significant limitation.
[0003] A suction mouth mirror, as shown in publication number CN212816192U, can facilitate saliva suction around, below, and above the mouth mirror through a transverse saliva suction opening and a longitudinal storage suction opening. This results in more comprehensive saliva suction, increased effectiveness, and improved physician efficiency. The mouth mirror also provides a clearer field of vision. The design features a detachable, round base plate, lens, and connecting head. After use, the interior of the mouth lens can be thoroughly cleaned and disinfected. A ring-shaped suction tray on the round base plate acts as the suction channel, achieving 360° circulating suction. This design also reduces airflow and enhances suction effectiveness.
[0004] The existing technique has the following technical problems: while the existing suction mouth mirror can perform a relatively good suction function for the surface of the tongue within the oral cavity through the saliva suction opening at the head end of the round base plate, it is difficult to perform the absorption function for the fluid in the narrow interdental space or within an alveolus, and the lens is usually round, cannot extend into the corresponding narrow position and cannot effectively suction the mixed fluid of blood or saliva.
[0005] Therefore, we propose a suction cannula for the oral cavity with a function of a mouth mirror to facilitate the solution of the problems mentioned above. Disclosure of the utility model
[0006] The present utility model aims to provide a suction cannula for the oral cavity with the function of a mouth mirror in order to solve the problems posed in the aforementioned prior art, namely that the existing suction mouth mirror on the current market, while providing a relatively good suction function for saliva within the oral cavity through the saliva suction opening at the head end of the round base plate, is unable to effectively perform the function of absorption for fluid in the narrow interdental space or within an alveolus, and the objective lens is normally round, does not extend into the corresponding narrow position, and cannot effectively suction the mixed fluid of blood or saliva.
[0007] To achieve the above objective, the present utility model provides the following technical solution: a suction cannula for an oral cavity with a function of a mouth mirror, comprising a handle, a receiving chamber is provided on an inner wall of the handle, a main absorption tube is firmly bonded to an inner wall of the receiving chamber, the main absorption tube is continuously connected to a first absorption tube on a side wall, and the main absorption tube is continuously connected to a second absorption tube at a head end; This also includes: that within a slot provided on an end piece of a connecting part, a fastening shaft is firmly connected and a torsion spring is connected to an outer shaft of the fastening shaft by means of an embedding; that a lens is firmly connected to a head end of the connecting part and an arrangement groove is provided on an inner wall of the lens and an inner wall of the arrangement groove is firmly connected to a lens.
[0008] Preferably, two groups of grip grooves are provided symmetrically on a left and right side of the handle, and evenly distributed non-slip patterns are provided on an inner wall of the grip grooves.
[0009] Preferably, the outer diameter of the main absorption tube is equal to the inner diameter of the receiving chamber, and an outer wall of the main absorption tube abuts an inner wall of the receiving chamber.
[0010] Preferably, the torsion spring is firmly connected at a head end to an inner wall of the slot provided on the connecting part, and the torsion spring is firmly connected at an end piece to a head end of the handle.
[0011] Preferably, the lens is provided in the form of an ellipse and a silicone sleeve is connected to an outer wall of the lens by means of embedding.
[0012] Preferably, one side wall of the lens rests against the inner wall of the arrangement groove and one surface of the lens is coated with an anti-fog coating.
[0013] Preferably, five groups of the first absorption tubes are evenly distributed with respect to the outer wall of the lens, and two groups of the first absorption tubes are symmetrically provided on the left and right with respect to the connecting part, and the head end of the handle forms a rotary connection with the mounting shaft.
[0014] In comparison with the existing technology, the advantageous effect of the present utility model is as follows: The suction cannula for the oral cavity with a mouth mirror function can, through an improved saliva suction opening, provide better absorption of fluid in the narrow interdental space or within an alveolus, and the adjustable lens increases ease of use; the specific content is as follows: 1. Grip grooves are provided; before using the suction cannula, the lens is first disinfected, then the grip grooves provided on both sides of the outer wall of the handle are gripped; since evenly distributed, non-slip patterns are provided on the surface of the grip grooves, it can be ensured that the suction cannula cannot come loose from the hand during subsequent use; 2. A connecting piece is provided, the head end of the handle is rotatably arranged on a shaft end of the mounting shaft within the slot at the lower end of the connecting piece, and a torsion spring is embedded in the shaft end of the mounting shaft. Because the head end of the torsion spring is attached to the inner wall of the connecting piece and the end piece of the torsion spring is attached to the head end of the handle, the connecting piece can be pressed down with an index finger when using the suction cannula. This allows the connecting piece to be rotated downwards, and simultaneously compresses the torsion spring. When the suction cannula is to be returned to its original position, the index finger is detached from the connecting piece, and the torsion spring drives the connecting piece to rotate and return to its original position, thus allowing the angle of the suction cannula to be adjusted and increasing its effectiveness during use. 3. A first absorption tube is provided; during the usage process, saliva, blood, and other fluids may adhere to the inner wall of the patient's oral cavity because the lens is elliptical in shape and the two groups of first absorption tubes are located on the surface of the connecting part below the lens, allowing for better absorption of saliva or blood from the surface of the patient's oral cavity. 4. An objective lens is provided because, when using the lens from the patient's oral cavity, heat is exhaled internally, but with long-term use of the general lens, clarity can be difficult to maintain, thus easily causing harm to the patient. The surface of the lens is coated with an anti-fog coating, which allows the lens to function for long-term use within the patient's oral cavity. 5. A second absorption tube is provided. For fluid in the narrow interdental space or within the alveolus, the general suction cannula can hardly fulfill the function of sufficient absorption. Through the five groups of second absorption tubes, which are provided on both sides of the lens, the lens can extend into the narrow space within the patient's oral cavity to absorb the fluid. At the same time, the silicone sleeve, which is attached to the outer wall of the lens in a manner of embedding, can provide good protection for the tissue within the patient's oral cavity. Explanation of the illustrations Fig. is a diagram of a main visual structure of the present utility model; Fig. is a diagram of a magnification structure of an A-site in the Fig. of the present utility model; Fig. is a diagram of a side-section viewing structure of a lens of the present utility model; Fig. is a diagram of a principal sectional view structure of a handle of the present utility model; Fig. is a diagram of a side view structure of a mounting shaft of the present utility model; Fig. is a diagram of a stereo structure of the present utility model.
[0015] In the illustrations: 1 handle; 101 Handle groove; 102 Admission chamber; 2 Connecting part; 201 first absorption tube; 202 Mounting shaft; 3 Lens; 301 second absorption tube; 302 Arrangement groove; 4 lenses; 5 Main absorption tube; 6 torsion springs. Designs
[0016] The technical solution in the embodiments of this utility model is clearly and completely described below in conjunction with the illustrations of this utility model. Obviously, the described embodiments are only part of the embodiments of this utility model and not the entirety of them. All other embodiments that a person skilled in the art could have obtained without inventive effort based on the embodiments specified in this utility model fall within the scope of protection of this utility model.
[0017] Example I: With reference to Fig. , Fig. and Fig. The present utility model provides the following technical solution: the existing suction cannula can hardly fulfill the absorption function for the fluid in the narrow interdental space or within an alveolus. To solve this technical problem, the present embodiment discloses the following technical content: A suction cannula for an oral cavity with the function of a mouth mirror, comprising a handle (1), a receiving chamber (102) is provided on an inner wall of the handle (1), and a main absorption tube (5) is firmly bonded to an inner wall of the receiving chamber (102), and the main absorption tube (5) is continuously connected to a first absorption tube (201) at a side wall, and the main absorption tube (5) is continuously connected to a second absorption tube (301) at a head end;
[0018] For fluid in the narrow interdental space or within the alveolus in the patient's oral cavity, the general suction cannula can hardly fulfill the function of sufficient absorption. Through the five groups of the second absorption tubes (301), which are provided on both sides of the objective (3), the objective (3) can extend into the narrow space within the patient's oral cavity to absorb the fluid. At the same time, the silicone sleeve, which is attached to the outer wall of the objective (3) in a manner of embedding, can fulfill a good protective function for the tissue within the patient's oral cavity.
[0019] Exemplary embodiment II: The technical content disclosed in the present exemplary embodiment is an improvement based on the above exemplary embodiment I. Through the first absorption tube (201) and the second absorption tube (301), the liquid can be absorbed within the space that is difficult to reach within the patient's oral cavity, as shown in Fig. , Fig. and Fig. As shown, the lens (3) is rigidly connected to the head end of the connecting part (2), and an arrangement groove (302) is provided on the inner wall of the lens (3), and the inner wall of the arrangement groove (302) is rigidly connected to a lens (4). An outer diameter of the main absorption tube (5) is equal to an inner diameter of the receiving chamber (102), and an outer wall of the main absorption tube (5) abuts an inner wall of the receiving chamber (102). The lens (3) is elliptical in shape, and a silicone sleeve is embedded in an outer wall of the lens (3). A side wall of the lens (4) abuts the inner wall of the arrangement groove (302), and a surface of the lens (4) is coated with an anti-fog coating.
[0020] During use, saliva, blood, or other fluids may adhere to the inner wall of the patient's oral cavity. This is because the lens (3) is elliptical in shape, and the two groups of absorption tubes (201) are located on the surface of the connecting part (2) below the lens (3). This allows for better absorption of saliva or blood from the surface of the patient's oral cavity. Since heat is exhaled from the patient's oral cavity during use, and visual clarity may be difficult to maintain with prolonged use of the lens (4), potentially causing harm to the patient, the lens surface is coated with an anti-fog coating to ensure its continued functionality within the patient's oral cavity.For fluid in the narrow interdental space or within the alveolus, the general suction cannula can hardly fulfill the function of sufficient absorption. Through the five groups of secondary absorption tubes provided on both sides of the objective (3), the objective (3) can extend into the narrow space within the patient's oral cavity to absorb the fluid. At the same time, the silicone sleeve, which is attached to the outer wall of the objective (3) in a manner of embedding, can fulfill a good protective function for the tissue within the patient's oral cavity.
[0021] Exemplary embodiment III: The technical content disclosed in the present exemplary embodiment is a further improvement based on the aforementioned exemplary embodiment I and exemplary embodiment II. Due to the provided control structure, the liquid can be absorbed at various points within the oral cavity. As in Fig. until and Fig.As shown, a fastening shaft (202) is fixedly connected within the slot provided on an end piece of a connecting part (2), and a torsion spring (6) is embedded in an outer shaft of the fastening shaft (202). Two groups of grip grooves (101) are symmetrically provided on the left and right sides of the handle (1), and uniformly distributed anti-slip patterns are provided on an inner wall of the grip grooves (101). The torsion spring (6) is fixedly connected at one end to an inner wall of the slot provided on the connecting part (2), and the torsion spring (6) is fixedly connected at one end to a head end of the handle (1).With respect to the outer wall of the lens (3) five groups of the first absorption tubes (201) are evenly distributed and two groups of the first absorption tubes (201) are symmetrically provided on the left and right with respect to the connecting part (2) and the head end of the handle (1) forms a rotary connection with the mounting shaft (202).
[0022] Before using the suction cannula, the lens (3) is first disinfected, then the grip grooves (101) provided on both sides of the outer wall of the handle (1) are gripped, since evenly distributed, non-slip patterns are provided on the surface of the grip grooves (101), it can be ensured that the suction cannula cannot be detached from the hand during subsequent use.A head end of the handle (1) is rotatably arranged on the shaft end of the mounting shaft (202) within the slot at the lower end of the connecting part (2), and a torsion spring (6) is embedded in the shaft end of the mounting shaft (202). Because the head end of the torsion spring (6) is attached to the inner wall of the connecting part (2) and an end piece of the torsion spring (6) is attached to the head end of the handle (1), the connecting part (2) can be pressed with an index finger when using the suction cannula. This allows the connecting part (2) to be rotated downwards, and simultaneously compresses the torsion spring (6). When the suction cannula is to be returned to its original position, the index finger is released from the connecting part (2), and the torsion spring (6) drives the connecting part (2) to rotate and return to its original position, thus allowing the angle of the suction cannula to be adjusted and increasing its effectiveness during use.
[0023] The content not shown in detail in this description belongs to the existing technology generally known to the relevant person in the field.
[0024] Although the present utility model is explained in detail with reference to the foregoing embodiments, for the person skilled in the art in the field, the technical solutions given in the foregoing respective embodiments may be modified, or part of the technical feature may be equivalently replaced, and any modification, equivalent replacement, improvement, etc., which are carried out within the spirit and principle of the present utility model, are intended to be within the scope of protection of the present utility model. QUOTES INCLUDED IN THE DESCRIPTION
[0000] This list of documents cited by the applicant was automatically generated and is included solely for the reader's convenience. The list is not part of the German patent or utility model application. The DPMA accepts no liability for any errors or omissions. Cited patent literature
[0000] CN 212816192U
[0003]
Claims
[1] A suction cannula for an oral cavity with a function of a mouth mirror, comprising a handle (1), a receiving chamber (102) is provided on an inner wall of the handle (1), a main absorption tube (5) is firmly bonded to an inner wall of the receiving chamber (102), the main absorption tube (5) is continuously connected to a first absorption tube (201) at a side wall, and the main absorption tube (5) is continuously connected to a second absorption tube (301) at a head end; characterized by , that this further includes: that a fastening shaft (202) is fixedly connected within a slot provided on an end piece of a connecting part (2) and a torsion spring (6) is connected to an outer shaft of the fastening shaft (202) by means of an embedding; that a lens (3) is firmly connected to a head end of the connecting part (2) and an arrangement groove (302) is provided on an inner wall of the lens (3) and an inner wall of the arrangement groove (302) is firmly connected to a lens (4). [2] A suction cannula for an oral cavity with a function of a mouth mirror according to claim 1, characterized by , that two groups of grip grooves (101) are provided symmetrically on a left and right side of the handle (1) and that non-slip patterns are provided evenly distributed on an inner wall of the grip grooves (101). [3] A suction cannula for an oral cavity with a function of a mouth mirror according to claim 1, characterized by , that an outer diameter of the main absorption tube (5) is equal to an inner diameter of the receiving chamber (102) and an outer wall of the main absorption tube (5) is in contact with an inner wall of the receiving chamber (102). [4] A suction cannula for an oral cavity with a function of a mouth mirror according to claim 1, characterized by , that the torsion spring (6) is firmly connected at a head end to an inner wall of the slot provided on the connecting part (2) and the torsion spring (6) is firmly connected at an end piece to a head end of the handle (1). [5] A suction cannula for an oral cavity with a function of a mouth mirror according to claim 1, characterized by , that the lens (3) is provided in the form of an ellipse and a silicone sleeve is connected to an outer wall of the lens (3) by means of embedding. [6] A suction cannula for an oral cavity with a function of a mouth mirror according to claim 1, characterized by , that a side wall of the lens (4) rests against the inner wall of the arrangement groove (302) and a surface of the lens (4) is coated with an anti-fog coating. [7] A suction cannula for an oral cavity with a function of a mouth mirror according to claim 1, characterized by , that with respect to the outer wall of the lens (3) five groups of the first absorption tubes (201) are evenly distributed and two groups of the first absorption tubes (201) are symmetrically provided on the left and right with respect to the connecting part (2) and the head end of the handle (1) forms a rotary connection with the mounting shaft (202).
Citation Information
Patent Citations
CN212816192U