Dental strong and weak suction handle

Abstract

A dental strong and weak suction handle comprises a handle body, a silica gel suction head connected to one end of the handle body in a sleeved mode, a pipe connector arranged at the other end of the handle body in a matched mode and a valve element installed in the handle body, an airflow channel penetrating in the axial direction is formed in the handle body, and a rubber bag piece used for sealing is arranged in the airflow channel. The rubber capsule piece for sealing is in interference fit with the interior of the airflow channel, the valve element is tightly matched with the interior of the rubber capsule piece, the sealing effect is achieved when air flows through the valve element, the situation of air leakage in the saliva suction process is avoided, and stability is improved; the pipe joint rotationally installed at one end of the handle body can rotate the handle at will during use, the situation of pipe winding is avoided, use is more flexible, and operation is more convenient; and the protective sleeve is in threaded fit with the outer side of the connector base and used for hiding and covering a fastener for fixing the pipeline on the inner side of the protective sleeve, so that the hands of medical staff are protected from being scratched, and the safety is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dental instruments, in particular to a dental strong and weak suction handle. Background Art

[0002] An oral saliva suction device is a medical device commonly used in dental or oral surgery. Its main function is to suck and remove saliva, blood or other secretions from the patient's mouth to keep the surgical field clear. It also helps to keep the patient comfortable and prevent infection.

[0003] The currently existing oral saliva suction device can refer to the external removal mode strong and weak suction disclosed in the Chinese utility model patent with patent application number CN202221258393.2, which specifically includes a hard rubber suction head, a connecting sleeve installed with the hard rubber suction head in a limiting position, and a handle seat installed with the hard rubber suction head and the connecting sleeve in a limiting position. The hard rubber suction head includes a suction nozzle, a connecting pipe mouth, and a through hole communicating with the suction nozzle. The connecting sleeve and the connecting pipe mouth are installed in a clamping position. The handle seat includes a limiting long tube, a circulation channel communicating with the through hole, and an external joint communicating with the circulation channel. The limiting long tube passes through the connecting sleeve and the connecting pipe mouth for limiting cooperation. The external joint is used to connect to an external pipeline. This structure realizes that the hard rubber suction head can be better fixed to the handle seat through the clamping position of the connecting pipe mouth of the hard rubber suction head and the connecting sleeve, and the hard rubber suction head is more convenient to disassemble.

[0004] However, in the above structure, due to the rotational fit between the valve core and the hard rubber suction head, there will be a fit gap, which will cause air leakage during the saliva suction process, thereby resulting in a poor saliva suction effect; and the direction of the external joint is fixed after being connected to the external pipe, and it is easy to get around the pipe during use, resulting in inconvenience in operation. Utility Model Content

[0005] In order to overcome the deficiencies of the prior art, the utility model provides a dental strong and weak suction handle.

[0006] The technical solution adopted by the utility model to solve its technical problems is:

[0007] A dental strong and weak suction handle comprises a handle body, a silicone suction head sleeved on one end of the handle body, a pipe joint fitted on the other end of the handle body and a valve core installed inside the handle body, wherein an air flow channel penetrating along the axial direction is provided inside the handle body, a rubber bag component for sealing is interference fit in the air flow channel, the surface of the valve core is smooth and tightly fits in the rubber bag component, the rubber bag component and the valve core are both provided with an internal valve channel connecting the air flow channel, the internal valve channel on the valve core and the internal valve channel on the rubber bag component are rotationally connected or rotationally cut off, and two sides of the valve core sequentially pass through the rubber bag component and the handle body to extend outward and are connected to a handle switch for controlling the rotation of the valve core.

[0008] Furthermore, a chamber for installing a rubber bag is provided inside the handle body, the cross-sectional area of ​​the chamber is larger than the cross-sectional area of ​​the airflow channel, and the cross-sectional area of ​​the rubber bag and the internal valve channel on the valve core is equal to the cross-sectional area of ​​the airflow channel.

[0009] In the utility model, the pipe joint is rotationally matched with the handle body, one end of the pipe joint extends from the outside to the inside into the air flow channel and then rotates and seals with the rubber bag component, the other end of the pipe joint is provided with a connecting portion for connecting the pipeline, and the handle body is also provided with a joint seat for rotatably installing the pipe joint on the handle body and preventing it from falling, the joint seat is sleeved on the pipe joint to limit the pipe joint, and the joint seat is fixedly connected to the handle body by an inverted buckle or a screw fixation method.

[0010] Furthermore, a retaining ring structure for cooperating with the joint seat to limit the position is radially extended outward from the pipe joint, one side of the retaining ring structure abuts against the joint seat, and the other side abuts against the rubber bag component.

[0011] Furthermore, a retaining ring structure for cooperating with the joint seat to limit the position is radially extended outward from the pipe joint, and a stepped structure for cooperating with the retaining ring structure to limit the position is arranged in the air flow channel, one side of the retaining ring structure abuts against the joint seat, and the other side abuts against the stepped structure.

[0012] Furthermore, the connecting portion is provided with an annular inverted tooth structure for preventing slipping.

[0013] Furthermore, a limiting structure is provided on one end of the joint seat that cooperates with the handle body.

[0014] Furthermore, the pipe is sleeved on the connecting part and fixed by a clamp, and a protective sleeve is sleeved on the outer side of the joint seat, and the protective sleeve is threadedly matched with the joint seat. When the protective sleeve is tightened, the connecting part is hidden and covered on the inner side of the protective sleeve.

[0015] In the utility model, a sleeve portion for fixing the silicone suction head is extended outwardly along the direction of the airflow channel at one end of the handle body, the diameter of the sleeve portion away from the end of the handle body is larger than the diameter close to the end of the handle body, and a sleeve cavity matching the shape of the sleeve portion is provided in the silicone suction head, and the sleeve portion is inserted into the sleeve cavity.

[0016] Furthermore, a guiding inclined surface is also provided on the outer end surface of the sleeve portion.

[0017] The utility model has the following advantages and beneficial effects:

[0018] A rubber bag for sealing is interference-fitted in the air flow channel, and the valve core is tightly fitted in the rubber bag, so that the gas flows through the valve core to achieve a sealing effect, thereby avoiding leakage during saliva suction and improving stability; and a pipe joint rotatably installed at one end of the handle body can rotate the handle at will during use without causing pipe winding, which is more flexible to use and more convenient to operate; a protective cover is threadedly fitted on the outer side of the joint seat to hide and cover the fasteners fixing the pipeline inside the protective cover, which is beneficial to protecting the hands of medical staff from scratches and improving safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0020] Figure 1 is a schematic diagram of the handle in this embodiment;

[0021] Figure 2 is a cross-sectional view of the handle in this embodiment;

[0022] Figure 3 This is a partial disassembled diagram of the handle in this embodiment. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model, but the utility model is not limited to the following embodiments.

[0024] like Figures 1 to 3As shown, the present embodiment discloses a dental strong and weak suction handle, comprising a handle body 1, a silicone suction head 2 sleeved on one end of the handle body 1, a pipe joint 3 fitted on the other end of the handle body 1 and a valve core 4 installed inside the handle body 1, wherein the handle body 1 is provided with an air flow channel 10 penetrating along the axial direction inside, and a rubber bag component 5 for sealing is interference-fitted in the air flow channel 10, the surface of the valve core 4 is smooth and tightly fitted in the rubber bag component 5, and the rubber bag component 5 and the valve core 4 are both provided with an internal valve channel 50 connected to the air flow channel 10, and the internal valve channel 50 on the valve core 4 and the internal valve channel 50 on the rubber bag component 5 are controlled to be connected or cut off to each other by rotating the valve core 4, Thereby, the conduction or cutoff of the air flow channel 10 is controlled. Specifically, the two sides of the valve core 4 extend outward through the rubber bag 5 and the handle body 1 in sequence and are connected with a handle switch 6 for controlling the rotation of the valve core 4. The valve core 4 can be driven to rotate by pushing the handle switch 6 forward or backward. A sealing rubber bag 5 is provided between the valve core 4 and the air flow channel 10, so that the gas flows through the valve core 4 to achieve a sealing effect, thereby avoiding leakage during the saliva suction process and improving stability. Although the valve core 4 and the rubber bag 5 are also rotationally matched, the valve core 4 and the rubber bag 5 are tightly matched, and the surface finish of the valve core 4 is high, so this kind of matching can achieve a sealing effect.

[0025] Preferably, in order to facilitate the installation of the rubber bladder 5 and the valve core 4, a chamber 11 for installing the rubber bladder 5 is provided inside the handle body 1, and the cross-sectional area of ​​the chamber 11 is larger than the cross-sectional area of ​​the airflow channel 10, so that when the rubber bladder 5 is fitted in the chamber 11, there is enough space to set the cross-sectional area of ​​the rubber bladder 5 and the internal valve channel 50 on the valve core 4 to be equal to the cross-sectional area of ​​the airflow channel 10, thereby avoiding affecting the air flow due to the small cross-sectional area of ​​the internal valve channel 50.

[0026] In this embodiment, the pipe joint 3 is rotationally matched with the handle body 1, and one end of the pipe joint 3 extends from the outside to the inside into the air flow channel 10 and then rotates and seals with the rubber bag 5. This cooperation method is the same as the sealing cooperation method between the above-mentioned valve core 4 and the rubber bag body. The other end of the pipe joint 3 is provided with a connecting portion 31 for fixing the pipeline, and the connecting portion 31 is provided with an annular inverted tooth structure for preventing it from falling off. Specifically, the handle body 1 is also provided with a joint seat 7 for rotatably installing the pipe joint 3 on the handle body 1 and preventing it from falling off. The joint seat 7 is sleeved on the pipe joint 3 to limit the pipe joint 3. Subsequently, the connector seat 7 is fixedly connected to the handle body 1 by means of an inverted buckle or a screw fixation. In order to facilitate the installation, a retaining ring structure 32 is provided on the pipe connector 3, which extends radially outward and is used to cooperate with the connector seat 7 to limit the position. One side of the retaining ring structure 32 abuts against the connector seat 7, and the other side abuts against the rubber bag 5. Without being limited to the above embodiment, a stepped structure can also be provided in the air flow channel 10 to cooperate with the installation of the retaining ring structure 32. The pipe connector 3 rotatably installed at one end of the handle body 1 can rotate the handle at will during use without causing the situation of winding the pipe, which is more flexible to use and more convenient to operate.

[0027] Preferably, when the joint seat 7 is fixedly connected to the handle body 1 in an inverted manner, in order to prevent the joint seat 7 from axially rotating relative to the handle body 1, a limiting structure 71 is provided on one end of the joint seat 7 that cooperates with the handle body 1.

[0028] Furthermore, when the pipe is sleeved on the connecting portion 31, it can be fixed by a clamp or other fasteners. However, when the doctor holds the handle to perform surgery, the clamp or other fasteners may scratch the doctor's hands. In order to avoid this situation, the outer side of the joint seat 7 needs to be sleeved with a protective sleeve 8, and the protective sleeve 8 is threadedly matched with the joint seat 7. When the protective sleeve 8 is tightened, the connecting portion 31 is hidden and covered on the inner side of the protective sleeve 8.

[0029] In this embodiment, one end of the handle body 1 extends outwardly along the direction of the airflow channel 10 to form a sleeve portion 12 for fixing the silicone suction head 2. The diameter of the sleeve portion 12 at the end away from the handle body 1 is larger than the diameter at the end close to the handle body 1. The silicone suction head 2 is provided with a sleeve cavity 20 that matches the shape of the sleeve portion 12. Since the silicone suction head 2 is made of a soft and deformable material, the sleeve portion 12 is inserted into the sleeve cavity 20 to fix the silicone suction head 2. In order to facilitate the insertion, a guide inclined surface (13) is also provided on the outer end surface of the sleeve portion 12.

[0030] The above contents described in this specification are merely examples of the present invention. Technicians in the technical field to which the present invention belongs can make various modifications or additions to the specific embodiments described or replace them in a similar manner. As long as they do not deviate from the contents of the present invention specification or exceed the scope defined by the claims, they should all fall within the protection scope of the present invention.

Claims

1. A dental strong and weak suction handle, comprising a handle body (1), a silicone suction head (2) sleeved on one end of the handle body (1), a pipe joint (3) fitted on the other end of the handle body (1), and a valve core (4) installed inside the handle body (1), wherein an air flow channel (10) penetrating along the axial direction is provided inside the handle body (1), characterized in that: A rubber bag (5) for sealing is interference-fitted in the air flow channel (10); the surface of the valve core (4) is smooth and tightly fits in the rubber bag (5); both the rubber bag (5) and the valve core (4) are provided with an internal valve channel (50) communicating with the air flow channel (10); the internal valve channel (50) on the valve core (4) and the internal valve channel (50) on the rubber bag (5) are rotationally connected or rotationally blocked; two sides of the valve core (4) sequentially pass through the rubber bag (5) and the handle body (1) to extend outward and are connected to a handle switch (6) for controlling the rotation of the valve core (4).

2. A dental strong and weak suction handle according to claim 1, characterized in that: A chamber (11) for mounting a rubber bag (5) is provided inside the handle body (1), the cross-sectional area of ​​the chamber (11) being greater than the cross-sectional area of ​​the airflow channel (10), and the cross-sectional area of ​​the rubber bag (5) and the internal valve channel (50) on the valve core (4) being equal to the cross-sectional area of ​​the airflow channel (10).

3. The dental strong and weak suction handle according to claim 1, characterized in that: The pipe joint (3) is rotatably engaged with the handle body (1); one end of the pipe joint (3) extends from the outside to the inside into the air flow channel (10) and then rotatably engages with the rubber bag member (5); the other end of the pipe joint (3) is provided with a connecting portion (31) for connecting a pipeline; the handle body (1) is also provided with a joint seat (7) for rotatably mounting the pipe joint (3) on the handle body (1) and preventing it from falling; the joint seat (7) is sleeved on the pipe joint (3) to limit the position of the pipe joint (3); the joint seat (7) is fixedly connected to the handle body (1) by an undercut method or a screw fixing method.

4. The dental strong and weak suction handle according to claim 3, characterized in that: A retaining ring structure (32) for cooperating with the joint seat (7) to limit the position extends radially outward from the pipe joint (3); one side of the retaining ring structure (32) abuts against the joint seat (7) and the other side abuts against the rubber bag component (5).

5. The dental strong and weak suction handle according to claim 3, characterized in that: A retaining ring structure (32) for cooperating with the joint seat (7) for limiting the position is radially extended outward from the pipe joint (3), and a stepped structure for cooperating with the retaining ring structure (32) for limiting the position is provided in the air flow channel (10), one side of the retaining ring structure (32) abuts against the joint seat (7), and the other side abuts against the stepped structure.

6. The dental strong and weak suction handle according to claim 3, characterized in that: The connecting portion (31) is provided with an annular inverted tooth structure for preventing slipping.

7. The dental strong and weak suction handle according to claim 3, characterized in that: A limiting structure (71) is provided on one end of the joint seat (7) that cooperates with the handle body (1).

8. The dental strong and weak suction handle according to claim 3, characterized in that: The pipe is sleeved on the connecting portion (31) and fixed by a clamp. A protective sleeve (8) is sleeved on the outer side of the joint seat (7). The protective sleeve (8) is threadedly matched with the joint seat (7). When the protective sleeve (8) is tightened, the connecting portion (31) is hidden and covered on the inner side of the protective sleeve (8).

9. The dental strong and weak suction handle according to claim 1, characterized in that: One end of the handle body (1) extends outwardly along the direction of the airflow channel (10) to form a sleeve portion (12) for fixing the silicone suction head (2); the diameter of the sleeve portion (12) at the end away from the handle body (1) is larger than the diameter at the end close to the handle body (1); a sleeve cavity (20) matching the shape of the sleeve portion (12) is provided in the silicone suction head (2); the sleeve portion (12) is inserted into the sleeve cavity (20).

10. The dental strong and weak suction handle according to claim 9, characterized in that: A guiding inclined surface (13) is also provided on the outer end surface of the sleeve portion (12).

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