Special suction head for preventing blockage of suction head for department of stomatology

Abstract

The utility model discloses a special suction head of suction apparatus of stomatological department prevents blocking, belongs to medical instrument technical field. Including the connecting piece of negative pressure pipe and its end, its innovation lies in, is provided with the unique anti -blocking structure on the connecting piece. The structure includes a casing, is equipped with flow passage no. 1 and the spiral groove on the inner side wall in the casing. The front center of casing is equipped with import no. 1, and the import no. 2 of outer side wall ring type is set up and is communicated with flow passage no. 2. The utility model discloses through two -way import design, when import no. 1 is blocked by organization or big piece of foreign matter, the import no. 2 of ring can immediately take over and maintain effective suction, realizes the redundancy of preventing blocking. The spiral groove of casing inner wall can guide fluid to form vortex flow, produces centrifugal and shearing effect to inhaled material, effectively breaks, peels off adhering object, prevents the deposition blockage in pipe inner wall. In addition, the ring baffle of casing front end and medical silica gel cover can gently push away and protect oral cavity soft tissue, avoid inhaled injury. This suction head structure design is ingenious, and the effect of preventing blocking is remarkable.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, and in particular to an anti-clogging suction head for a dental suction device. Background Technology

[0002] In clinical treatment and surgery in dentistry, suction devices are essential equipment used to promptly remove saliva, blood, cooling water, and tissue debris from the patient's mouth, maintaining a clear and clean surgical area. However, existing suction tips have revealed several unresolved issues in practical use.

[0003] First, the most common suction tips are single straight tubes, whose inlet end easily comes into direct contact with soft tissues (such as the buccal mucosa, tongue, or gums). This can not only cause tissue damage but is also highly susceptible to complete blockage by large tissue fragments or blood clots, leading to a momentary interruption of suction function. The dentist must then remove the suction tip from the patient's mouth for cleaning, severely disrupting the continuity of the procedure. Second, when suctioning viscous liquids mixed with small solids (such as blood containing dental materials), these substances easily adhere to and deposit on the inner wall of the suction tip, gradually narrowing the flow channel orifice and eventually causing poor flow or complete blockage. Although some suction tips are designed with side holes, these holes are also easily blocked under negative pressure and lack an effective self-cleaning mechanism. Therefore, there is an urgent need for a new type of suction tip that can effectively prevent inlet blockage, reduce internal adhesion, and safely contact soft tissues to improve the efficiency and safety of oral surgeries. To address these issues, we propose a clogging-resistant suction tip specifically for oral surgery. Utility Model Content

[0004] Technical solution: A dental suction device with anti-clogging feature includes: a connector at the end of a negative pressure tube; an anti-clogging structure on the connector, the anti-clogging structure including: a housing at the other end of the connector and communicating with the negative pressure tube; a flow channel one inside the housing; a spiral groove on the inner side wall of the housing; an inlet one at the center of the front of the housing; a second annular inlet on the outer side wall of the housing; and a flow channel two on the second inlet.

[0005] Alternatively, the housing may be frustum-shaped.

[0006] Alternatively, the front end of the housing is provided with a baffle, which is annular and encloses the inlet.

[0007] Alternatively, a rubber block may be fitted over the outside of the baffle.

[0008] Alternatively, the rubber block may be medical-grade silicone.

[0009] Alternatively, the connection between the rubber block and the baffle is an interference fit with no gap.

[0010] Beneficial effects: 1. Dual anti-blockage design ensures uninterrupted suction: By setting up a central inlet (Inlet 1) and a circumferential inlet (Inlet 2), a dual suction channel is formed. During clinical operation, if the central inlet (Inlet 1) is accidentally blocked by tooth debris, blood clots, or soft tissue, the negative pressure will immediately shift to the circumferential inlet (Inlet 2), maintaining strong suction capability. This design fundamentally avoids the need to interrupt surgery for cleaning due to blockage in a single inlet, greatly improving surgical efficiency.

[0011] 2. Spiral turbulence effectively prevents internal adhesion and blockage: The spiral grooves on the inner wall of the casing are one of the core innovations. When fluid (a mixture of blood and saliva) flows through, the spiral grooves force it to change from laminar flow to a strong spiral vortex. This vortex produces two key effects: first, it generates shear force on clumps of material in the fluid (such as viscous blood clots), breaking them into smaller, more easily transportable particles; second, the vortex continuously scours the pipe wall, stripping away any deposits that have already begun to adhere, thus significantly reducing the risk of contaminants depositing and accumulating on the inner wall of the pipe and maintaining long-term unobstructed flow.

[0012] 3. Enhanced Tissue Safety and Patient Comfort: The annular baffle at the front of the casing and its outer medical-grade silicone sleeve together create a soft, smooth contact surface. When the suction tip touches the patient's oral mucosa, tongue, or gums, the annular baffle effectively pushes the soft tissue away, preventing it from being directly sucked into the inlet and causing blockage or tissue damage. The medical-grade silicone material has good biocompatibility and a soft touch, minimizing mechanical irritation to the patient's oral cavity and improving comfort and safety during treatment.

[0013] 4. Compact structure and high practicality: The entire anti-clogging structure is integrated into the tip of the suction cup, making it compact and not affecting flexible operation in the oral cavity. The frustum-shaped shell design conforms to fluid mechanics, which helps reduce resistance and concentrate negative pressure. All improvements are based on actual clinical needs, and the simple and reliable structure is very suitable for mass production and clinical promotion. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the shell structure in this utility model; Figure 3 This is a schematic diagram of the internal flow channel of the shell in this utility model; Figure 4 This is a schematic diagram of the structure of the inner wall of the shell in this utility model.

[0015] Figure Labels 11. Negative pressure pipe; 12. Connecting parts; 2. Anti-clogging structure; 21. Shell; 211. Flow channel one; 212. Spiral groove; 22. Inlet one; 23. Inlet two; 231. Flow channel two; 24. Baffle; 25. Rubber block. Detailed Implementation

[0016] To make the technical solution of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0017] Example like Figure 1-4 As shown in the figure, this utility model embodiment provides a dental suction device anti-clogging head, including: a connector 12 at the end of a negative pressure tube 11; an anti-clogging structure 2 on the connector 12, the anti-clogging structure 2 including: a housing 21 disposed at the other end of the connector 12 and communicating with the negative pressure tube 21; a flow channel 211 disposed inside the housing 21; a spiral groove 212 formed on the inner side wall of the housing 21; an inlet 22 formed at the center of the front of the housing 21; an inlet 23 formed in an annular shape on the outer side wall of the housing 21; and a flow channel 231 disposed on the inlet 23.

[0018] Optionally, the housing 21 is frustum-shaped. Optionally, a baffle 24 is provided at the front end of the housing 21, the baffle 24 being annular and encompassing the inlet 22. Optionally, a rubber block 25 is fitted over the baffle 24. Optionally, the rubber block 25 is made of medical-grade silicone. Optionally, the connection between the rubber block 25 and the baffle 24 is an interference fit with no gap.

[0019] This device mainly consists of a negative pressure pipe 11, a connector 12, and a core anti-clogging structure 2.

[0020] In practice, medical staff first reliably connect the connector 12 at the end of the negative pressure tube 11 to the external suction tube. Then, the front end, which integrates the anti-clogging structure 2, is inserted into the surgical area inside the patient's mouth.

[0021] The effects and working process are as follows: Highly efficient suction under normal conditions: In most cases, the central inlet 22 serves as the main suction port, responsible for removing liquid and smaller debris directly in front. Simultaneously, the annular inlet 23 acts as an auxiliary suction port, responsible for removing liquid from the surrounding area. Negative pressure, acting on both inlets through flow channels 231 and 211, creates a wide suction area.

[0022] Emergency handling of main inlet blockage: When inlet 1 (22) is accidentally completely blocked by a large tissue mass (such as a cotton ball) or dental material, a traditional suction tip will immediately fail. However, in this design, even if inlet 1 is blocked, the annular area containing inlet 2 (23) remains completely open. External negative pressure will instantly concentrate and flow through channel 2 (231) into channel 1 (211), maintaining strong suction. At this time, the dentist can continue operating without removing the suction tip, as inlet 2 is sufficient for continuous removal of liquids and smaller particles.

[0023] Internal anti-adhesion and self-cleaning mechanism: All fluid drawn in, whether from inlet one or inlet two, eventually flows into the flow channel 211 inside the housing 21. The spiral grooves 212 on the inner wall of the flow channel 21 then play a crucial role. The fluid is forced to rotate along the trajectory of the spiral grooves, forming a high-speed vortex. This vortex has an excellent "stirring" effect on viscous blood and saliva mixtures, breaking up newly formed, soft blood clots and preventing them from agglomerating and growing. At the same time, the vortex acts like a dynamic "brush," continuously cleaning the pipe wall, making it difficult for substances such as proteins and bacteria that easily adhere to the pipe wall to deposit, thus maintaining the long-term cleanliness of the inside of the pipe and preventing gradual blockage from the inside.

[0024] Soft tissue protection mechanism: When operating within the confined space of the oral cavity, the tip of the suction device inevitably comes into contact with sensitive gums or mucosa. In this situation, the baffle 24 and the outer rubber block 25 play a crucial protective role. When the tip approaches the tissue, the flexible rubber block 25 contacts the tissue first and gently pushes it away, creating a safe distance to prevent excessive suction of tissue into any part of the inlet. The rubber block 25 and the baffle 24 are press-fitted, ensuring a seamless connection, preventing contaminant residue, and also guaranteeing structural stability and ease of cleaning.

[0025] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A clogging-proof suction tip for a dental aspirator, comprising: A negative pressure pipe (11) is provided with a connector (12) at its end. The feature is that the connector (12) is provided with an anti-blocking structure (2), the anti-blocking structure (2) comprising: The housing (21) is located at the other end of the connector (12) and is connected to the negative pressure pipe (11); Flow channel 1 (211) is disposed inside the housing (21); A spiral groove (212) is formed on the inner sidewall of the housing (21); An inlet (22) is located at the center of the front of the housing (21); Inlet 2 (23) is annularly formed on the outer side wall of the housing (21); Flow channel two (231) is provided on inlet two (23).

2. The anti-clogging suction head for a dental aspirator according to claim 1, characterized in that, The shell (21) is frustum-shaped.

3. The anti-clogging suction head for a dental aspirator according to claim 2, characterized in that, The front end of the housing (21) is provided with a baffle (24), which is annular and encloses the inlet (22).

4. The anti-clogging suction head for a dental aspirator according to claim 3, characterized in that, A rubber block (25) is fitted on the outside of the baffle (24).

5. The anti-clogging suction head for a dental aspirator according to claim 4, characterized in that, The rubber block (25) is medical-grade silicone.

6. The anti-clogging suction head for a dental aspirator according to claim 5, characterized in that, The connection between the rubber block (25) and the baffle (24) is an interference fit with no gap.

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