An oral cavity speculum

Abstract

The utility model discloses an oral cavity mouth gag, including adapter sleeve, the handle is connected with one end screw thread of adapter sleeve, the other end of adapter sleeve is provided with the adjusting head, is provided with the assembly cavity in adjusting head, the sliding fit of assembly cavity has the adjusting column, the lateral surface of adjusting column is provided with the sawtooth groove, the meshing of sawtooth groove one side has transmission gear, adjusting hole is provided with one side of adjusting head, is equipped with the upper stay rod in adjusting hole, the last end of upper stay rod is equipped with the gear part, upper stay rod is installed in assembly cavity through the pin shaft, and the gear part of upper stay rod is engaged with transmission gear, and the top of upper stay rod is provided with the upper dental pad, and the lower stay rod is provided with below upper stay rod, and the lower stay rod is fixed at one side of adjusting head, and one end of lower stay rod is provided with the lower dental pad, is provided with a plurality of tapered clamping slots on the lifting column, and the pressing bin is provided with one side of adjusting head, and the pressing bin is provided with the pressing subassembly, and its advantage lies in, the overall adopts the split type design, can adjust the angle freely, need not continuously keep the open and close gesture, one -hand operation, simple and convenient.

Description

Technical Field

[0001] This utility model belongs to the field of oral medical auxiliary device technology, and more specifically, it relates to an oral mouth opening device. Background Technology

[0002] Currently, in the field of dentistry, oral mouth openers are core instruments for maintaining a patient's continuously open mouth. Their performance directly determines the clarity of the dentist's field of vision, the convenience of the procedure, and the patient's cooperation. In clinical practice, different treatment scenarios and different patient groups have varying requirements for the adjustment range, support stability, and adaptability of mouth openers. However, existing oral mouth openers still have the following significant technical defects, severely restricting their clinical application effectiveness:

[0003] Traditional forceps mouth openers rely on a hinge lever structure with a fixed opening angle, which cannot achieve stepless continuous adjustment. The fit rate for people with large differences in oral anatomy is only 58%. Most existing mouth openers have a maximum opening degree of ≤45 degrees, which cannot meet the needs of complex surgeries such as the extraction of impacted mandibular wisdom teeth and the resection of oral and maxillofacial tumors. This results in insufficient exposure of the surgical field, limited instrument operation space, and a surgical time extension of more than 30%. Although some mouth openers with a large opening degree can meet the range requirements, they lack a fine adjustment mechanism and are difficult to adjust the angle in the small opening degree range, making them unsuitable for children and patients with sensitive mouths.

[0004] In addition, traditional spiral mouth openers require both hands to rotate the adjustment knob simultaneously, and clamp mouth openers require one hand to apply continuous force to maintain the mouth opening. Neither can achieve quick adjustment and locking with one hand. When doctors operate medical instruments with one hand, an assistant is needed to adjust the mouth opener, which increases the manpower input. Utility Model Content

[0005] In view of the shortcomings of the prior art, the present invention provides an oral cavity opening device to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an oral mouth opener, comprising an adapter cylinder, one end of which is threadedly connected to a handle, and the other end of which is provided with an adjusting head. The adjusting head has an assembly cavity, and an adjusting column is slidably fitted within the assembly cavity. A row of serrated grooves is provided on the side of the adjusting column, and a transmission gear meshes with one side of each serrated groove. The transmission gear is mounted in the assembly cavity via a pin. An adjusting hole is provided on one side of the adjusting head, and an upper support rod is provided within the adjusting hole. A gear portion is provided at the end of the upper support rod, which is mounted in the assembly cavity via a pin. The gear portion of the upper support rod meshes with the transmission gear. An upper toothed pad is provided at the top of the upper support rod, and a lower support rod is provided below the upper support rod. The lower support rod is fixed to one side of the adjusting head, and a lower toothed pad is provided at one end of the lower support rod. A lifting column is connected to the top of the adjusting column, and a limiting platform is provided at the top of the lifting column. Multiple conical slots are provided on the lifting column. A pressing chamber is provided on one side of the adjusting head, and a pressing component is provided inside the pressing chamber. One end of the pressing component is connected to a top block through a pin, and the top block is engaged in the conical slot. A reset chamber is provided on the other side of the adjusting head, and a reset component is provided inside the reset chamber. The reset component is positioned in the conical slot on the other side of the lifting column and is gradually lowered and reset by pressing the reset component.

[0007] As an optional solution of this utility model, the other end of the adapter tube is provided with a hexagonal mounting hole, an adjusting head is inserted into the hexagonal mounting hole, and a threaded hole is provided on one side of the adapter tube, a locking head is threaded into the threaded hole, and the adjusting head is pressed by the locking head.

[0008] As an optional solution of this utility model, a protective plate is provided on the upper support rod. The protective plate is arc-shaped and fits against the surface of the adjustment hole. A pointer is provided on one side of the protective plate. The side wall of the adjustment head is provided with scale values, with a total of 20 divisions. Each division has an angle value of 3 degrees, and the angle range is 0-60 degrees. The pointer is correspondingly attached to the scale value surface.

[0009] As an optional solution of this utility model, both the upper and lower dental pads are provided with multiple rows of alveoli.

[0010] As an optional embodiment of this invention, the pressing assembly includes a pressing head, a pressing rod connected to one side of the pressing head, the pressing rod being connected to a pressing chamber via a pin, a first return spring being connected to the bottom of the pressing rod and fixed inside the pressing chamber, and a top block being connected to one end of the pressing rod.

[0011] As an optional solution of this utility model, the reset assembly includes an auxiliary support block installed in the reset chamber by a pin. The top of the auxiliary support block is engaged in a conical groove. A reset block is provided at the bottom of the auxiliary support block. A reset connecting rod is connected inside the reset block. The center of the reset connecting rod is installed in the reset chamber by a pin. A second reset spring is connected to the bottom of the end of the reset connecting rod. The second reset spring is fixed to a positioning plate in the reset chamber.

[0012] This utility model provides an oral cavity opener, which has the following beneficial effects:

[0013] The handle and adjustment head are installed at both ends of the adapter tube, enabling a detachable design and making installation more flexible and convenient. By repeatedly pressing the pressure rod with the pressing head, the top block descends along the conical slot to the adjacent conical slot below. The auxiliary support block on the other side provides auxiliary support, realizing the raising and lowering of the adjustment column. The gear on the upper support rod is rotated through the transmission gear to realize the opening and closing operation. The angle can be adjusted according to actual needs without continuous pressing. Simply stop pressing after reaching the expected angle.

[0014] By designing the alveoli of the upper and lower dental pads, the teeth can be positioned to prevent slippage and improve operational stability. By pressing the reset block, the auxiliary support block is lifted and gradually lowered until the limit platform is close to the top of the adjustment head, thus completing the reset. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 This utility model Figure 1 A magnified view of a portion of area A;

[0017] Figure 3 This is a front view of the present invention;

[0018] Figure 4 This is a cross-sectional view of the present invention;

[0019] Figure 5 This utility model Figure 4 A magnified view of section B.

[0020] In the diagram: 1. Handle; 2. Adapter cylinder; 3. Locking head; 4. Adjusting head; 401. Reset chamber; 402. Pressing chamber; 403. Positioning plate; 404. Scale value; 5. Adjusting column; 501. Serrated groove; 6. Lifting column; 601. Conical groove; 602. Limiting platform; 7. Pressing head; 701. Pressure rod; 702. First reset spring; 703. Top block; 8. Auxiliary support block; 801. Reset block; 802. Reset connecting rod; 803. Second reset spring; 9. Lower support rod; 10. Lower toothed pad; 11. Upper support rod; 111. Protective plate; 112. Upper toothed pad; 113. Toothed groove; 114. Pointer; 115. Gear section; 12. Transmission gear. Detailed Implementation

[0021] The embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are for illustrative purposes only and should not be construed as limiting the scope of this utility model.

[0022] Please see Figures 1 to 5 This utility model provides a technical solution: an oral mouth opener, including an adapter cylinder 2. One end of the adapter cylinder 2 is provided with a threaded boss, and a handle 1 is connected to the threaded boss. The other end of the adapter cylinder 2 is provided with a hexagonal mounting hole, and an adjusting head 4 is inserted into the hexagonal mounting hole. One side of the adapter cylinder 2 is provided with a threaded hole, and a locking head 3 is threadedly engaged in the threaded hole. The locking head 3 presses the adjusting head 4. The adjusting head 4 is provided with an assembly cavity, and an adjusting column 5 is slidably engaged in the assembly cavity. A row of serrated grooves 501 is provided on the side of the adjusting column 5. A transmission gear 12 is meshed on one side of the serrated grooves 501. The transmission gear 12 is installed in the assembly cavity by a pin. One side of the adjusting head 4 is provided with an adjusting hole, and an upper support rod 11 is provided in the adjusting hole. The upper support rod 11 has a gear part 115 at its end. The upper support rod 11 is installed in the assembly cavity by a pin, and the gear part 115 of the upper support rod 11 meshes with the transmission gear 12.

[0023] A protective plate 111 is provided on the upper support rod 11. The protective plate 111 is arc-shaped and fits against the surface of the adjustment hole. A pointer 114 is provided on one side of the protective plate 111. The side wall of the adjustment head 4 is provided with a scale value 404, which has 20 divisions. Each division has an angle value of 3 degrees, and the angle range is 0-60 degrees. The pointer 114 is attached to the surface of the scale value 404 for easy identification. An upper toothed pad 112 is provided at the top of the upper support rod 11. A lower support rod 9 is provided below the upper support rod 11. The support rod 9 is fixed to one side of the adjusting head 4 and is parallel to the horizontal line. A lower toothed pad 10 is provided at one end of the lower support rod 9. Both the upper toothed pad 112 and the lower toothed pad 10 are provided with multiple rows of toothed grooves 113, and the opening of the toothed grooves 113 can be freely selected. The top of the adjusting column 5 is threadedly connected to the lifting column 6. The top of the lifting column 6 is provided with a limiting platform 602 to prevent the whole unit from falling. The lifting column 6 is provided with multiple conical slots 601, which are arranged in an equidistant array.

[0024] A pressing chamber 402 is provided on one side of the adjusting head 4. A pressing assembly is provided inside the pressing chamber 402. One end of the pressing assembly is connected to a top block 703 via a pin. The top block 703 is engaged in a single conical slot 601. The pressing assembly can drive the top block 703 to reciprocate, driving the lifting column 6 to rise equidistantly along the conical slot 601. The pressing assembly includes a pressing head 7. A pressing rod 701 is connected to one side of the pressing head 7. The pressing rod 701 is connected to the pressing chamber 402 via a pin. A first return spring 702 is also connected to the bottom of the pressing rod 701. The first return spring 702 is fixed inside the pressing chamber 402, thereby providing a reciprocating rebound force for the pressing rod 701, realizing the reciprocating operation of the pressing rod 701.

[0025] One end of the pressure rod 701 is connected to the top block 703. The pressure rod 701 drives the top block 703 to descend along the conical groove 601 until it reaches the adjacent conical groove 601 below. The first return spring 702 presses the spring-back pressure rod 701, causing the lifting column 6 to rise one step. This process is repeated equidistantly to stabilize and adjust the height. The other side of the adjustment head 4 is provided with a reset chamber 401. The reset chamber 401 is provided with a reset component. The reset component is positioned in the conical groove 601 on the other side of the lifting column 6 to provide auxiliary support. The column is gradually lowered and reset by pressing the reset component.

[0026] The reset assembly includes an auxiliary support block 8 installed in the reset chamber 401 via a pin. The top of the auxiliary support block 8 is engaged in a conical slot 601. A reset block 801 is provided at the bottom of the auxiliary support block 8. A reset connecting rod 802 is connected inside the reset block 801. The center of the reset connecting rod 802 is installed in the reset chamber 401 via a pin. A second reset spring 803 is connected to the bottom of the end of the reset connecting rod 802. The second reset spring 803 is fixed on the positioning plate 403 inside the reset chamber 401.

[0027] The specific usage and function of this embodiment: Before use, install the handle 1 and the adjusting head 4 at both ends of the adapter cylinder 2. After assembly, the top block 703 is positioned in the conical slot 601 at the top of the lifting column 6. Press the pressing head 7 repeatedly with your thumb. During the process, the top block 703 descends along the conical slot 601 to the adjacent conical slot 601 below. The auxiliary support block 8 on the other side provides auxiliary support, realizing the rise of the lifting column 5. At this time, the adjusting column 5 drives the transmission gear 12 to rotate through the sawtooth 501. The upper support rod 11 passes through the gear part at one end. 115 then rotates automatically, and the pointer 114 on the upper support rod 11 rotates along the scale value 404. The angle can be adjusted according to actual needs without continuous pressing. Once the expected angle is reached, the pressing can be stopped. The alveoli 113 of the upper dental pad 112 and the lower dental pad 10 can position the teeth to prevent slippage and improve operational stability. After the operation is completed, the auxiliary support block 8 is lifted by pressing the reset block 801 and gradually lowered until the limit platform 602 is close to the top of the adjustment head 4 to complete the reset. After the whole assembly is disassembled, it is disinfected. The assembly and disassembly are convenient.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An oral cavity opener, characterized in that: The device includes an adapter tube (2), one end of which is threadedly connected to a handle (1), and the other end of which is provided with an adjusting head (4). An assembly cavity is provided inside the adjusting head (4), and an adjusting column (5) is slidably fitted inside the assembly cavity. A row of serrated grooves (501) is provided on the side of the adjusting column (5), and a transmission gear (12) meshes with one side of the serrated grooves (501). The transmission gear (12) is installed in the assembly cavity via a pin. An adjusting hole is provided on one side of the adjusting head (4), and an upper support rod (11) is provided inside the adjusting hole. A gear portion (115) is provided at the end of the upper support rod (11), and the upper support rod (11) is installed in the assembly cavity via a pin. The gear portion (115) of the upper support rod (11) meshes with the transmission gear (12). An upper toothed pad (112) is provided at the top of the upper support rod (11). A lower support rod (9) is provided below the adjustment head (4), the lower support rod (9) is fixed to one side of the adjustment head (4), a lower tooth pad (10) is provided at one end of the lower support rod (9), a lifting column (6) is connected to the top of the adjustment column (5), a limit platform (602) is provided at the top of the lifting column (6), a plurality of conical slots (601) are provided on the lifting column (6), a pressing chamber (402) is provided on one side of the adjustment head (4), a pressing component is provided in the pressing chamber (402), a top block (703) is connected to one end of the pressing component by a pin, the top block (703) is engaged in the conical slot (601), a reset chamber (401) is provided on the other side of the adjustment head (4), a reset component is provided in the reset chamber (401), the reset component is positioned in the conical slot (601) on the other side of the lifting column (6), and is gradually lowered and reset by pressing the reset component.

2. The oral cavity opener according to claim 1, characterized in that: The other end of the adapter tube (2) is provided with a hexagonal assembly hole, and an adjusting head (4) is inserted into the hexagonal assembly hole. A threaded hole is provided on one side of the adapter tube (2), and a locking head (3) is threaded into the threaded hole. The adjusting head (4) is pressed by the locking head (3).

3. The oral cavity opener according to claim 1, characterized in that: The upper support rod (11) is provided with a protective plate (111). The protective plate (111) is arc-shaped and fits against the surface of the adjustment hole. A pointer (114) is provided on one side of the protective plate (111). The side wall of the adjustment head (4) is provided with a scale value (404), which has 20 divisions. Each division has an angle value of 3 degrees and the angle range is 0-60 degrees. The pointer (114) is attached to the surface of the scale value (404).

4. The oral cavity opener according to claim 3, characterized in that: Both the upper dental pad (112) and the lower dental pad (10) are provided with multiple rows of alveoli (113).

5. The oral cavity opener according to claim 1, characterized in that: The pressing assembly includes a pressing head (7), a pressing rod (701) connected to one side of the pressing head (7), the pressing rod (701) being connected to the pressing chamber (402) by a pin, a first return spring (702) being connected to the bottom of the pressing rod (701), the first return spring (702) being fixed inside the pressing chamber (402), and a top block (703) being connected to one end of the pressing rod (701).

6. The oral cavity opener according to claim 5, characterized in that: The reset assembly includes an auxiliary support block (8) installed in the reset chamber (401) via a pin. The top of the auxiliary support block (8) is engaged in a conical slot (601). A reset block (801) is provided at the bottom of the auxiliary support block (8). A reset connecting rod (802) is connected inside the reset block (801). The center of the reset connecting rod (802) is installed in the reset chamber (401) via a pin. A second reset spring (803) is connected to the bottom end of the reset connecting rod (802). The second reset spring (803) is fixed on the positioning plate (403) inside the reset chamber (401).

Images