Medical dental strong and weak suction handle

Abstract

A medical strong and weak suction handle for the dental department comprises a soft suction head and a hard valve element, a mounting round hole is formed in the soft suction head, and a valve hole is formed in the peripheral face of the hard valve element. The hard valve element is arranged in the installation round hole in a rotating fit mode, a shifting handle is arranged at one end of the hard valve element, and the shifting handle and the hard valve element are of an integrally-formed structure. According to the utility model, the shifting handle and the hard valve core are arranged into an integrally formed structure, so that the shifting handle and the hard valve core do not need to be assembled and connected, the assembly time of a traditional split structure is saved, and the assembly efficiency of the strong and weak suction handle for the dental department is effectively improved; in addition, under the structure, the connecting structure between the shifting handle and the hard valve element is stable, the shifting handle is not prone to being separated from the hard valve element, the stability that the shifting handle is linked with the hard valve element to rotate is effectively guaranteed, and the use experience of the strong and weak suction handle for the dental department is improved.

Description

Technical Field

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

[0002] The dental strong and weak suction handle is usually installed on a dental chair and connected to a negative pressure pump. During oral clinical treatment operations, it is used to suck out liquids from the patient's mouth, assist in isolating the treatment area, and pull the patient's oral soft tissue.

[0003] Referring to the silicone strong and weak suction disclosed in the Chinese patent with reference to patent number 202222288301.1, the silicone strong and weak suction includes a suction head, a hard valve core arranged on the suction head, a wrench switch for rotating the hard valve core, a connecting piece sleeved on the suction head, a positioning tube for positioning the connecting piece, and a handle tube sleeved on the connecting piece. A suction port is provided at one end of the suction head, and a hollow coupling tube is connected to the other end. A first channel connecting the suction port and the coupling tube is provided in the suction head; a through hole penetrating the hard valve core is provided on the hard valve core, and the through hole can be communicated with the first channel. A locking groove is provided at one end of the hard valve core, and the wrench switch is fixedly connected to the locking groove. Medical staff rotate the hard valve core synchronously by turning the wrench switch to control the size of the through hole communicating with the first channel, thereby controlling the suction force of the silicone strong and weak suction.

[0004] The above patent inserts one end of the wrench switch into the positioning groove to achieve a quick fixed connection between the wrench switch and the hard valve core, thereby improving the assembly efficiency between the wrench switch and the hard valve core. However, under this structure, the wrench switch and the hard valve core are separated, and when producing the dental strong and weak suction handle, the assembly between them requires a certain amount of assembly time; and the hand switch is a main component that medical staff often operate. After long-term use, the wrench switch is easy to slip off the hard valve core, affecting the normal use of the dental strong and weak suction handle. Utility Model Content

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

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

[0007] A medical dental strong and weak suction handle, comprising a soft suction head and a hard valve core, wherein the soft suction head is provided with a mounting circular hole, and the outer peripheral surface of the hard valve core is provided with a valve hole;

[0008] The hard valve core can be rotatably fitted in the mounting circular hole, and a lever is provided on one end of the hard valve core. The feature of the hard valve core is that the lever and the hard valve core are an integrally formed structure.

[0009] In the utility model, the outer peripheral surface of the hard valve core is slidably fitted with the hole wall of the mounting circular hole.

[0010] In the utility model, at least one sealing groove structure is provided on the outer circumferential surface of the hard valve core, and the sealing groove structure includes two annular grooves respectively located on both sides of the valve hole, and the annular grooves are arranged around the outer circumferential surface of the hard valve core; an annular convex portion for adapting to the annular groove is provided on the hole wall of the mounting circular hole, and the annular convex portion is arranged around the hole wall of the mounting circular hole, and at least one annular convex portion is matched in each of the annular grooves, and the surface of the annular convex portion is slidably fitted with the groove surface of the annular groove.

[0011] In the utility model, the annular protrusion and the soft suction head are an integrally formed structure.

[0012] In the utility model, the soft suction tip comprises a suction head portion, a mounting portion and a connecting portion which are integrally connected in sequence along the axial direction, wherein the suction head portion is provided with a suction port, the connecting portion is provided with a liquid outlet channel, the mounting circular hole is provided on the mounting portion and penetrates the mounting portion along the radial direction of the mounting portion, and the liquid outlet end of the suction port and the liquid inlet end of the liquid outlet channel both penetrate the hole wall of the mounting circular hole.

[0013] In the utility model, the outer diameter of the suction head portion gradually decreases from the end connected to the mounting portion toward a direction away from the mounting portion.

[0014] In the utility model, a first limit surface and a second limit surface are respectively provided on two opposite sides of the mounting portion, a first limit protrusion slidably fitted on the first limit surface is provided between the connection between the hard valve core and the dial handle, and the other end of the hard valve core is integrally formed with a second limit protrusion slidably fitted on the second limit surface.

[0015] In the utility model, a straw joint is installed on the connecting portion of the soft suction head, and the straw joint is provided with a joint channel corresponding to the liquid outlet end of the liquid outlet channel.

[0016] In the utility model, the liquid outlet channel is provided with a plurality of annular grooves arranged at intervals along the axial direction of the liquid outlet channel, the first plug end of the straw connector is inserted into the liquid outlet channel, and the first plug end of the straw connector is provided with a plurality of annular protrusions which are matched one by one with the annular grooves.

[0017] In the utility model, a connecting ring for limiting the elastic deformation of the connecting part is sheathed on the connecting part of the soft suction head.

[0018] Beneficial effects of the utility model: the utility model sets the dial handle and the hard valve core as an integrated structure, which eliminates the need for assembly connection between the dial handle and the hard valve core, thereby eliminating the assembly time of the traditional split structure and effectively improving the assembly efficiency of the dental strong and weak suction handle; and under this structure, the connection structure between the dial handle and the hard valve core is relatively stable, and the dial hand is not easy to separate from the hard valve core, which effectively ensures the stability of the rotation of the dial hand linked to the hard valve core, and improves the user experience of the dental strong and weak suction handle. In addition, the utility model first uses the elastic action of the soft suction head itself to make the hole wall of the installation circular hole and the outer peripheral surface of the hard valve core slide and fit, thereby achieving a primary seal, and then uses an annular convex portion in each annular groove for secondary sealing, thereby ensuring the sealing state of the hard valve core after the installation circular hole is matched, reducing the probability of liquid and gas leakage from the hard valve core and the soft suction head, and ensuring the experience of medical staff when using the dental strong and weak suction handle. Moreover, the annular protrusion and the soft suction head are an integrally formed structure, so that the annular protrusion does not require an additional assembly process, which effectively improves the assembly efficiency of the dental strong and weak suction handle. 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 an exploded view of this embodiment;

[0021] Figure 2 The combined cross-sectional view of this embodiment Figure 1 ;

[0022] Figure 3 The combined cross-sectional view of this embodiment Figure 2 ;

[0023] Figure 4 The three-dimensional Figure 1 ;

[0024] Figure 5 The three-dimensional Figure 2 . DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solution and advantages of the embodiments of the present utility model clearer, the technical solution in the embodiments of the present utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the present utility model.

[0026] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, top, bottom, inside, outside, vertical, horizontal, longitudinal, counterclockwise, clockwise, circumferential, radial, axial...), then the directional indication is only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0027] In addition, if there are descriptions involving "first" or "second" etc. in the embodiments of the utility model, the descriptions of "first" or "second" etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.

[0028] Reference Figure 1-5 A medical dental strong and weak suction handle comprises a soft suction head 1 and a hard valve core 2, wherein the soft suction head 1 is made of silicone and is provided with a mounting circular hole 13, wherein the soft suction head 1 comprises a suction head portion 15, a mounting portion 16 and a connecting portion 17 which are integrally formed and connected in sequence along the axial direction, wherein the suction head portion 15 is provided with a suction port 11, and the connecting portion 17 is provided with a liquid outlet channel 12, the mounting circular hole 13 is provided on the mounting portion 16 and is radially penetrated through the mounting portion 16, and the liquid outlet end of the suction port 11 and the liquid inlet end of the liquid outlet channel 12 both penetrate the hole wall of the mounting circular hole 13.

[0029] Furthermore, the hard valve core 2 is made of hard plastic, and a valve hole 21 is provided on the outer peripheral surface of the hard valve core 2, and the valve hole 21 is arranged along the radial direction of the hard valve core 2 and penetrates the outer peripheral surface of the hard valve core 2; the hard valve core 2 can be rotatably fitted in the mounting circular hole 13, and a dial handle 20 is provided on one end of the hard valve core 2, and the dial handle 20 and the hard valve core 2 are an integrally formed structure, which eliminates the need for assembly connection between the dial handle 20 and the hard valve core 2, thereby eliminating the assembly time of the traditional split structure and effectively improving the assembly efficiency of the dental strong and weak suction handle; and under this structure, the connection structure between the dial handle 20 and the hard valve core 2 is relatively stable, and the dial hand 20 is not easy to separate from the hard valve core 2, which effectively ensures the stability of the rotation of the dial hand 20 linked to the hard valve core 2, and improves the user experience of the dental strong and weak suction handle.

[0030] As a preferred embodiment, the outer circumferential surface of the hard valve core 2 is slidably fitted with the hole wall of the mounting circular hole 13, and the hard valve core 2 is configured to be rotatable to an angular position where the valve hole 21 is simultaneously connected to the suction port 11 and the liquid outlet channel 12, and the hard valve core 2 is rotatable to an angular position where the outer circumferential surface of the hard valve core 2 simultaneously blocks the suction port 11 and the liquid outlet channel 12, so that medical staff can use the dial 20 to rotate the hard valve core 2 to connect or disconnect the suction port 11 and the liquid outlet channel 12. When the suction port 11 and the liquid outlet channel 12 are connected, the dental strong and weak suction handle can suck liquid in the patient's mouth; when the outer circumferential surface of the hard valve core 2 simultaneously blocks the suction port 11 and the liquid outlet channel 12, the suction port 11 and the liquid outlet channel 12 are disconnected, and the dental strong and weak suction handle cannot suck liquid in the patient's mouth.

[0031] Furthermore, at least one sealing groove structure is provided on the outer circumferential surface of the hard valve core 2, and the sealing groove structure includes two annular grooves 22 respectively located on both sides of the valve hole 21, and the annular groove 22 is opened on the outer circumferential surface of the hard valve core 2 and is arranged around the outer circumferential surface of the hard valve core 2; an annular protrusion 14 for adapting to the annular groove 22 is integrally formed on the hole wall of the mounting circular hole 13, and the annular protrusion 14 is arranged around the hole wall of the mounting circular hole 13, and each of the annular grooves 22 is matched with at least one annular protrusion 14, and the surface of the annular protrusion 14 is slidably fitted with the groove surface of the annular groove 22, so as to achieve sealing between the hard valve core 2 and the soft suction head 1.

[0032] The utility model first uses the elastic effect of the soft suction head 1 itself to make the hole wall of the installation circular hole 13 and the outer peripheral surface of the hard valve core 2 slide and fit, thus achieving a primary seal, and then uses an annular protrusion 14 in each annular groove for secondary sealing, thereby ensuring the sealing state of the hard valve core 2 after being matched with the installation circular hole 13, solving the problem of poor sealing effect and easy pressure release due to the relatively simple sealing structure, and ensuring the experience of medical staff when using the dental strong and weak suction handle. Moreover, the annular protrusion 14 is integrally formed on the hole wall of the installation circular hole 13, so that the annular protrusion 14 and the soft suction head 1 are an integrally formed structure, so that the annular protrusion 14 does not require additional assembly procedures, effectively improving the assembly efficiency of the dental strong and weak suction handle.

[0033] As a preferred embodiment, the outer diameter of the suction head 15 gradually decreases from the end connected to the mounting portion 16 to the direction away from the mounting portion 16, so as to facilitate the suction head 15 to be inserted into the patient's mouth to suck liquid. In addition, the middle part of the mounting portion 16 is convex with a reinforcing convex portion 18, which is used to enhance the structural strength of the mounting portion 16, thereby ensuring the stability of the hard valve core 2 after being installed in the mounting circular hole 13.

[0034] As a preferred embodiment, the mounting portion 16 is provided with a first limiting surface 161 and a second limiting surface 162 on opposite sides thereof, a first limiting protrusion 23 which is slidably fitted on the first limiting surface 161 is provided between the connection between the hard valve core 2 and the dial handle 20, and the other end of the hard valve core 2 is integrally formed with a second limiting protrusion 24 which is slidably fitted on the second limiting surface 162, the first limiting protrusion 23 and the second limiting protrusion 24 being configured to limit the axial movement of the hard valve core 2 along the mounting circular hole 13, thereby ensuring the stability of the hard valve core 2 installed on the soft suction tip 1; at the same time, since the first limiting protrusion 23 and the second limiting protrusion 24 are respectively slidably fitted with the first limiting surface 161 and the second limiting surface 162, a mobile sealing effect can be achieved between them, thereby performing a third sealing, further ensuring the sealing state of the hard valve core 2 after being fitted in the mounting circular hole 13.

[0035] As a preferred embodiment, a straw joint 4 is installed on the connecting portion 17 of the soft suction tip 1. The straw joint 4 is provided with a joint channel 41 corresponding to the liquid outlet end of the liquid outlet channel 12. The straw joint 4 is used to connect the straw of the negative pressure pump.

[0036] Furthermore, the straw connector 4 includes a connector body 42, a first plug-in end 43 provided on one end of the connector body 42, and a second plug-in end 44 provided on the other end of the connector body 42. The connector body 42, the first plug-in end 43, and the second plug-in end 44 are an integrally formed structure, wherein the first plug-in end 43 is used to connect the soft suction head 1, and the second plug-in end 44 is used to connect the straw, and the connector channel 41 sequentially penetrates the connector body 42, the first plug-in end 43, and the second plug-in end 44 along the axial direction.

[0037] Furthermore, the liquid outlet channel 12 is provided with a plurality of annular grooves 121 arranged at intervals along the axial direction of the liquid outlet channel 12, and the first plug end 43 of the straw connector 4 is inserted into the liquid outlet channel 12. The first plug end 43 of the straw connector 4 is provided with a plurality of annular protrusions 45 that match the annular grooves 121 one by one, so that the first plug end 43 of the straw connector 4 is plugged into the liquid outlet channel 12 by the cooperation of the annular protrusions 45 and the annular grooves 121. In addition, the outer surface of the second plug end 44 is provided with a plurality of annular inverted teeth for plugging the straw, so as to facilitate the connection of the second plug end 44 with the straw.

[0038] As a preferred embodiment, the connecting portion 17 of the soft suction tip 1 is sheathed with a connecting ring 5 for limiting the elastic deformation of the connecting portion 17. The connecting ring 5 can be used to constrain the connecting portion 17 of the soft suction tip 1, reducing the probability of elastic deformation of the connecting portion 17 of the soft suction tip 1, so that the straw connector 4 is not easy to slip off the suction tip. In this embodiment, when the straw connector 4 is installed on the soft suction tip 1, the upper end surface of the connector body 42 abuts against the bottom surface of the connecting portion 17, and the bottom surface of the connecting portion 17 is provided with a mounting groove circumferentially arranged around the connecting portion 17. The connecting ring 5 is sheathed in the mounting groove and the bottom surface abuts against the upper end surface of the connector body 42, thereby completing the installation of the connecting ring 5.

[0039] The above description is only a preferred embodiment of the present invention. Any technical solution that achieves the purpose of the present invention by substantially the same means shall fall within the protection scope of the present invention.

Claims

1. A medical dental strong and weak suction handle, comprising a soft suction head (1) and a hard valve core (2), wherein the soft suction head (1) is provided with a mounting circular hole (13), and the outer peripheral surface of the hard valve core (2) is provided with a valve hole (21); The hard valve core (2) can be rotatably fitted in the mounting circular hole (13), and a lever (20) is provided on one end of the hard valve core (2), characterized in that: The handle (20) and the hard valve core (2) are an integrally formed structure.

2. A medical dental strong and weak suction handle according to claim 1, characterized in that: The outer peripheral surface of the hard valve core (2) is slidably fitted with the hole wall of the mounting circular hole (13).

3. A medical dental strong and weak suction handle according to claim 1 or 2, characterized in that: At least one sealing groove structure is provided on the outer circumferential surface of the hard valve core (2), and the sealing groove structure includes two annular grooves (22) respectively located on both sides of the valve hole (21), and the annular grooves (22) are arranged around the outer circumferential surface of the hard valve core (2); an annular protrusion (14) for matching with the annular groove (22) is provided on the hole wall of the mounting circular hole (13), and the annular protrusion (14) is arranged around the hole wall of the mounting circular hole (13), and each of the annular grooves (22) is matched with at least one annular protrusion (14), and the surface of the annular protrusion (14) is slidably fitted with the groove surface of the annular groove (22).

4. The medical dental strong and weak suction handle according to claim 3, characterized in that: The annular protrusion (14) and the soft suction head (1) are an integrally formed structure.

5. The medical dental strong and weak suction handle according to claim 3, characterized in that: The soft suction tip (1) comprises a suction head portion (15), a mounting portion (16) and a connecting portion (17) which are integrally connected in sequence along the axial direction, wherein the suction head portion (15) is provided with a suction port (11), the connecting portion (17) is provided with a liquid outlet channel (12), the mounting circular hole (13) is provided on the mounting portion (16) and penetrates the mounting portion (16) in the radial direction of the mounting portion (16), and the liquid outlet end of the suction port (11) and the liquid inlet end of the liquid outlet channel (12) both penetrate the hole wall of the mounting circular hole (13).

6. The medical dental strong and weak suction handle according to claim 5, characterized in that: The outer diameter of the suction head (15) gradually decreases from the end connected to the mounting portion (16) in a direction away from the mounting portion (16).

7. The medical dental strong and weak suction handle according to claim 5, characterized in that: The mounting portion (16) is provided with a first limiting surface (161) and a second limiting surface (162) on opposite sides thereof, respectively; a first limiting protrusion (23) slidably fitted on the first limiting surface (161) is provided between the connection between the hard valve core (2) and the lever (20); and a second limiting protrusion (24) slidably fitted on the second limiting surface (162) is integrally formed at the other end of the hard valve core (2).

8. The medical dental strong and weak suction handle according to claim 5, characterized in that: A suction pipe joint (4) is mounted on the connecting portion (17) of the soft suction head (1), and the suction pipe joint (4) is provided with a joint channel (41) corresponding to the liquid outlet end of the liquid outlet channel (12).

9. The medical dental strong and weak suction handle according to claim 8, characterized in that: The liquid outlet channel (12) is provided with a plurality of annular grooves (121) arranged at intervals along the axial direction of the liquid outlet channel (12); the first plug-in end (43) of the straw connector (4) is inserted into the liquid outlet channel (12); and the first plug-in end (43) of the straw connector (4) is provided with a plurality of annular locking protrusions (45) which are matched one by one with the annular grooves (121).

10. The medical dental strong and weak suction handle according to claim 9, characterized in that: The connecting portion (17) of the soft suction tip (1) is sheathed with a connecting ring (5) for limiting elastic deformation of the connecting portion (17).

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