Oral cavity opening device for department of stomatology
By designing a dental oral opening device with arc-shaped opening plate and opening restriction mechanism, the cumbersome adjustment process in the prior art is solved, one-way rotation is achieved, and the operation is simplified and the oral closing is prevented, which improves the The convenience of oral opening.
Patent Information
- Application Number
- CN202420051978.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-09
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-09
Smart Images
Figure CN222130129U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of medical equipment, in particular to an oral cavity expansion device for stomatology. Background Art
[0002] Dentistry is rich in content, including oral medicine, oral restoration, oral basics, oral surgery, oral orthodontics and oral materials. In the clinical operation of stomatology, it is often necessary to keep the patient's mouth open to facilitate the doctor to use medical instruments to reach into the mouth for treatment. Therefore, a distraction device is needed to keep the mouth open.
[0003] At present, in order to reduce the weight, the devices used for oral dilation on the market are usually made of plastic with a certain toughness. The integrated structure can dilate the patient's lips. However, due to its fixed structure, it does not have the adjustment function. When used on patients with different lip sizes, the lips that can be dilated are of different sizes, which is not convenient for doctors to observe and treat. Therefore, there is also an adjustable dilation device in the prior art to dilate the mouth, such as the utility model patent application with authorization announcement number CN217014313U and authorization announcement date July 22, 2022, entitled A Medical Oral Dilation Device. When in use, the medical staff holds the handle and puts the dilation wheel into the patient's lips. The medical staff then adjusts it according to the patient's specific situation. The method is as follows: press the button cap to make the shift block disengage from the limit of the shift slot, make the button cap slide in the slide slot, drive the limit block to slide in the limit slot, drive the front slider, roller and rear slider to move in the separation box, the separation rod takes the pillar as the center, converges to the middle under the action of the reset spring, keeps in contact with the roller, the roller moves in the middle of the separation rod, changes the angle between the two separation rods, thereby changes the lateral distance between the support wheels, and adjusts the width of the support; then rotate the rotating rod to move the movable block, drive the connecting rod to move, due to the limit of the bracket, the sliding shaft moves on the guide member, drives the support wheels, thereby changes the vertical distance between the support wheels, and adjusts the height of the support; the support wheels on one side can be adjusted separately according to needs, so as to flexibly adjust the size of the oral cavity.
[0004] During the adjustment process, the oral opening device in the prior art corresponds to the patient's oral cavity through rollers and guide members. During the adjustment process, it is necessary to first adjust the angle of the separation rod and then adjust the distance between the support wheels. This requires two adjustments, which brings inconvenience to the operation of medical staff. Utility Model Content
[0005] The utility model aims to provide a mouth opening device for stomatology to solve the above-mentioned deficiencies in the prior art.
[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:
[0007] A mouth opening device for stomatology, comprising a first adjustment arm and a second adjustment arm, wherein the opening ends of the first adjustment arm and the second adjustment arm are provided with arc-shaped opening plates corresponding to the patient's mouth, the first adjustment arm and the second adjustment arm are rotatably connected via a rotating connecting piece, and the operating ends of the first adjustment arm and the second adjustment arm are provided with arc-shaped operating handles;
[0008] An expansion limiting mechanism is arranged between the first adjusting arm and the second adjusting arm, and the expansion limiting mechanism includes an arc plate and an arc seat corresponding to the arc plate, the arc plate is arranged on the first adjusting arm, the arc seat is arranged on the second adjusting arm, an arc opening cavity is arranged on the arc seat, the arc plate is slidably connected in the arc opening cavity, a ratchet groove is arranged on the arc plate, a pawl assembly is arranged in the arc opening cavity, the pawl assembly includes a limiting pawl, an elastic member and an adjusting member, the limiting pawl is driven by the adjusting member and has a limiting state defined by the ratchet groove and a separation state separated from the ratchet groove.
[0009] In the above-mentioned oral opening device for stomatology, the arc-shaped opening plate includes a connecting plate connected to the first adjustment arm and the second adjustment arm, a flexible fitting structure is arranged inside the connecting plate, and side limiting plates are arranged on opposite sides of the connecting plate.
[0010] In the above-mentioned oral cavity opening device for stomatology, the limiting pawl includes a rotating end and a locking end which are arranged opposite to each other, a rotating seat is arranged in the arc-shaped opening, and the rotating end is rotatably connected to the rotating seat via a rotating shaft.
[0011] In the above-mentioned oral cavity opening device for stomatology, the elastic member is arranged between the rotating seat and the limiting pawl, and the elastic member blocks the unlocking rotation stroke of the limiting pawl rotating in the direction away from the ratchet groove.
[0012] The above-mentioned oral cavity stretching device for stomatology, the adjusting part includes an adjusting rod fixedly connected to the limiting pawl, the arc-shaped seat is provided with an arc-shaped opening groove connected to the arc-shaped opening mouth, the adjusting rod is slidably connected in the arc-shaped opening groove, and during the unlocking rotation stroke, the adjusting rod slides along the arc-shaped opening groove.
[0013] The above-mentioned oral cavity opening device for stomatology, a side locking seat is provided on one side of the arc-shaped seat, a radial opening cavity perpendicular to the arc-shaped opening cavity is provided in the side locking seat, and a locking piece is slidably provided in the radial opening cavity;
[0014] In the above-mentioned oral cavity opening device for stomatology, a locking tooth is provided at the end of the locking member, and the locking member slides along the radially opened oral cavity and has a first preset working position and a second preset working position. In the first preset working position, the locking tooth is locked with the ratchet groove, and in the second preset working position, the locking tooth is separated from the ratchet groove;
[0015] In the above-mentioned oral cavity opening device for stomatology, an L-shaped limiting plate is provided on one side of the locking member, and in the first preset working position, the limiting plate is engaged with the outer side wall of the side locking seat.
[0016] In the above technical scheme, the oral expansion device for stomatology provided by the embodiment of the utility model includes a first adjustment arm and a second adjustment arm, the expansion ends of the first adjustment arm and the second adjustment arm are provided with arc-shaped expansion plates corresponding to the patient's mouth, the first adjustment arm and the second adjustment arm are rotatably connected by a rotating connecting piece, and an expansion limiting mechanism is provided between the first adjustment arm and the second adjustment arm, and the rotation of the first adjustment arm and the second adjustment arm can be limited by the expansion limiting mechanism, so that the first adjustment arm and the second adjustment arm can only be driven to perform expansion movement, but cannot perform contraction movement, thereby preventing the first adjustment arm and the second adjustment arm from accidentally closing due to the bite force of the oral cavity, making it convenient for the operator to expand the patient's mouth. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.
[0018] Figure 1 This is a schematic diagram of the structure of the oral cavity opening device for stomatology provided by an embodiment of the utility model;
[0019] Figure 2 The second structural schematic diagram of the oral cavity opening device for stomatology provided by the embodiment of the utility model;
[0020] Figure 3 A schematic diagram of the structure of the expansion limiting mechanism provided in an embodiment of the utility model;
[0021] Figure 4 For the utility model embodiment Figure 3 Enlarged view of point A in the middle.
[0022] Description of reference numerals:
[0023] 1. First adjusting arm; 2. Second adjusting arm; 3. Arc-shaped expansion plate; 30. Connecting plate; 31. Flexible fitting structure; 32. Side limiting plate; 4. Expansion limiting mechanism; 40. Arc-shaped plate; 400. Ratchet groove; 41. Arc-shaped seat; 410. Arc-shaped opening cavity; 42. Ratchet assembly; 43. Limiting pawl; 430. Rotating end; 431. Locking end; 44. Elastic member; 45. Adjusting member; 46. Rotating seat; 47. Adjusting rod; 5. Rotating connecting member; 6. Side locking seat; 60. Radial opening cavity; 61. Locking member; 62. Locking tooth; 63. Limiting plate; 7. Operating end; 8. Expansion end. DETAILED DESCRIPTION
[0024] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.
[0025] like Figure 1-4 As shown, the present invention provides an oral opening device for stomatology, comprising a first adjustment arm 1 and a second adjustment arm 2, the opening ends 8 of the first adjustment arm 1 and the second adjustment arm 2 are provided with an arc-shaped opening plate 3 corresponding to the patient's oral cavity, the first adjustment arm 1 and the second adjustment arm 2 are rotatably connected by a rotating connection member 5, the operating ends 7 of the first adjustment arm 1 and the second adjustment arm 2 are provided with an arc-shaped operating handle, and an opening limiting mechanism 4 is provided between the first adjustment arm 1 and the second adjustment arm 2, and the opening limiting mechanism 4 includes an arc-shaped plate 40 and an arc-shaped seat 4 corresponding to the arc-shaped plate 40. 1, the arc plate 40 is arranged on the first adjusting arm 1, the arc seat 41 is arranged on the second adjusting arm 2, the arc seat 41 is arranged with an arc opening cavity 410, the arc plate 40 is slidably connected in the arc opening cavity 410, the arc plate 40 is arranged with a ratchet groove 400, the arc opening cavity 410 is arranged with a pawl assembly 42, the pawl assembly 42 includes a limiting pawl 43, an elastic member 44 and an adjusting member 45, the limiting pawl 43 is driven by the adjusting member 45 and has a limiting state locked with the ratchet groove 400 and a separation state separated from the ratchet groove 400.
[0026] Specifically, the first adjustment arm 1 and the second adjustment arm 2 have the same structure, and the two ends of the first adjustment arm 1 and the second adjustment arm 2 are respectively a spreading end 8 and an operating end 7, wherein the operating end 7 is an end held by the operator's hand, and the spreading end 8 is an end in contact with the patient's mouth, and an arc-shaped spreading plate 3 is provided on the spreading end 8, and the arc-shaped spreading plate 3 is used to contact the patient's lips. The middle parts of the first adjustment arm 1 and the second adjustment arm 2 are connected by a rotating connecting member 5 to form an X-shaped spreading structure, so that the first adjustment arm 1 and the second adjustment arm 2 can rotate relative to each other, so that when the operator's hand operates the operating end 7, the first adjustment arm 1 and the second adjustment arm 2 can be rotated to open or contract, so that the patient's mouth can be spread.
[0027] In this embodiment, the expansion limiting mechanism 4 is arranged between the first adjustment arm 1 and the second adjustment arm 2, and the expansion limiting mechanism 4 is used to limit and lock the rotation of the first adjustment arm 1 and the second adjustment arm 2. The expansion limiting mechanism 4 includes an arc plate 40 and an arc seat 41 corresponding to the arc plate 40. The arc plate 40 is arranged on the first adjustment arm 1, and the arc seat 41 is arranged on the second adjustment arm 2. The curvature and length of the arc plate 40 and the arc seat 41 can meet the rotation and expansion of the first adjustment arm 1 and the second adjustment arm 2. According to the need of opening, an arc-shaped opening cavity 410 is provided on the arc-shaped seat 41, the arc-shaped opening cavity 410 passes through the arc-shaped seat 41, one end of the arc-shaped plate 40 passes through the arc-shaped opening cavity 410, and the arc-shaped plate 40 is slidably connected in the arc-shaped opening cavity 410. A sliding block can be provided on the arc-shaped plate 40, and a sliding limiting groove is provided in the arc-shaped opening cavity 410. The sliding block can be slidably connected in the sliding limiting groove, so that when the hand drives the first adjusting arm 1 and the second adjusting arm 2 to rotate, the sliding block slides in the sliding limiting groove.
[0028] In this embodiment, the arc plate 40 is provided with a plurality of ratchet grooves 400 in sequence and at intervals along its length direction, and the arc-shaped open cavity 410 is provided with a pawl assembly 42 corresponding to the ratchet groove 400. For the convenience of description, the movement of rotating the first adjustment arm 1 and the second adjustment arm 2 so that the distance between their open ends 8 gradually increases is called an opening operation stroke, and the movement of rotating the first adjustment arm 1 and the second adjustment arm 2 so that the distance between their open ends 8 gradually decreases is called a contraction operation stroke. The pawl assembly 42 and the ratchet groove 400 cooperate with each other to realize that the first adjustment arm 1 and the second adjustment arm 2 can only rotate in one direction: that is, the first adjustment arm 1 and the second adjustment arm 2 can only accept the opening movement stroke of the drive seat, and cannot perform the contraction movement stroke. In this way, during use, when the first adjustment arm 1 and the second adjustment arm 2 are opened to a suitable angle, the pawl assembly 42 automatically locks the ratchet groove 400, so that the first adjustment arm 1 and the second adjustment arm 2 remain at this angle, thereby meeting the requirements of oral operation.
[0029] In this embodiment, the pawl assembly 42 includes a limiting pawl 43 and an elastic member 44 connected to the limiting pawl 43. The limiting pawl 43 is rotatably arranged in the arc-shaped opening cavity 410. The limiting pawl 43 is arranged corresponding to the movement stroke of the ratchet groove 400. The elastic member 44 can be a spring. The elastic member 44 is arranged on the rotation stroke of the limiting pawl 43 so that the limiting pawl 43 has the following effect: when the first adjustment arm 1 and the second adjustment arm 2 are driven to perform the expansion movement stroke, the limiting pawl 43 is pressed by the inclined surface of the ratchet groove 400 to rotate, so that the limiting pawl 43 and the ratchet groove 400 are rotated. The tooth groove 400 is separated so that the arc plate 40 can move along the arc opening cavity 410, and when the first adjustment arm 1 and the second adjustment arm 2 are driven to perform a contraction movement, the limiting pawl 43 is locked with the vertical locking surface of the ratchet groove 400, so that the limiting pawl 43 and the ratchet groove 400 are locked and cannot perform a contraction movement. The adjustment member 45 can manually operate the limiting pawl 43, so that the limiting pawl 43 is separated from the ratchet groove 400 and maintained in this state, so that the arc plate 40 can perform both an expansion movement stroke and a contraction movement stroke.
[0030] The present invention provides an oral dilation device for stomatology, comprising a first adjustment arm 1 and a second adjustment arm 2. The dilation ends 8 of the first adjustment arm 1 and the second adjustment arm 2 are provided with arc-shaped dilation plates 3 corresponding to the patient's oral cavity. The first adjustment arm 1 and the second adjustment arm 2 are rotatably connected via a rotating connection 5. An dilation limiting mechanism 4 is provided between the first adjustment arm 1 and the second adjustment arm 2. The rotation of the first adjustment arm 1 and the second adjustment arm 2 can be limited by the dilation limiting mechanism 4, so that the first adjustment arm 1 and the second adjustment arm 2 can only be driven to perform dilation movement but cannot perform contraction movement. In this way, the first adjustment arm 1 and the second adjustment arm 2 can be prevented from accidentally closing due to the bite force of the oral cavity, so that the operator can dilate the patient's oral cavity conveniently.
[0031] In this embodiment, preferably, the arc-shaped expansion plate 3 includes a connecting plate 30 connected to the first adjustment arm 1 and the second adjustment arm 2, a flexible fitting structure 31 is arranged in the connecting plate 30, and side limiting plates 32 are arranged on opposite sides of the connecting plate 30, so that the two side limiting plates 32 and the connecting plate 30 form a U-shaped structure that can correspond to the patient's oral wall, and the flexible fitting structure 31 can be a flexible layer arranged on the connecting plate 30, such as a flexible layer made of silicone, and when in use, the flexible layer is in contact with the patient's oral cavity.
[0032] In this embodiment, preferably, the limiting pawl 43 includes a rotating end 430 and a locking end 431 that are relatively arranged, a rotating seat 46 is arranged in the arc-shaped opening cavity 410, the rotating end 430 is rotatably connected to the rotating seat 46 through a rotating shaft, and the locking end 431 is provided with an arc-shaped end, and the locking end 431 can be correspondingly embedded in the ratchet groove 400, and the elastic member 44 is arranged between the rotating seat 46 and the limiting pawl 43, and the elastic member 44 blocks the rotation stroke of the limiting pawl 43 in the direction away from the ratchet groove 400. When the adjusting member 45 rotates to limit the pawl 43 to the limiting position The locking end 431 of the limiting pawl 43 is embedded in the ratchet groove 400. At this time, the first adjustment arm 1 and the second adjustment arm 2 can be driven to perform an opening movement stroke, but cannot perform a contraction movement stroke. When the adjusting member 45 rotates to make the limiting pawl 43 to the unlocking position, the locking end 431 of the limiting pawl 43 is separated from the ratchet groove 400. At this time, the arc plate 40 can perform both an opening movement stroke and a contraction movement stroke. When the limiting pawl 43 moves from the limiting position to the unlocking position, the limiting pawl 43 presses the elastic member 44 so that the elastic member 44 has elasticity.
[0033] In this embodiment, preferably, the adjusting member 45 includes an adjusting rod 47 fixedly connected to the limiting pawl 43, and an arc-shaped opening groove (not shown in the figure) connected to the arc-shaped opening cavity 410 is provided on the arc seat 41, and the adjusting rod 47 is slidably connected in the arc-shaped opening groove, and when the limiting pawl 43 moves from the limiting position to the unlocking position, the adjusting rod 47 slides along the arc-shaped opening groove; the adjusting rod 47 is slidably connected in the arc-shaped opening groove, and when the limiting pawl 43 needs to be adjusted from the limiting position to the unlocking position, the adjusting rod 47 can be operated by hand, so that the adjusting rod 47 moves along the arc-shaped opening groove, and correspondingly, the limiting pawl 43 rotates to the unlocking position, and when the drive of the hand on the adjusting rod 47 disappears, under the elastic force of the elastic member 44, the limiting pawl 43 can automatically move from the unlocking position to the limiting position.
[0034] In this embodiment, preferably, a side locking seat 6 is provided on one side of the arc seat 41, and a radial opening cavity 60 perpendicular to the arc opening cavity 410 is provided in the side locking seat 6, a locking piece 61 is slidably provided in the radial opening cavity 60, and a locking tooth 62 is provided at the end of the locking piece 61, and the locking piece 61 slides along the radial opening cavity 60 and has a first preset working position and a second preset working position, in the first preset working position, the locking tooth 62 is locked with the locking ratchet, and in the second preset working position, the locking tooth 62 is separated from the locking ratchet; in this way, during use, when the first adjusting arm 1 and the second adjusting arm 2 are rotated to a suitable angle, the locking piece 61 is pushed to move to the first preset working position, so that the locking tooth 62 of the locking piece 61 is locked with the ratchet groove 400, and when the first adjusting arm 1 and the second adjusting arm 2 need to continue to be rotated and adjusted, the locking piece 61 is pushed to move to the second preset working position, and then the opening angle of the first adjusting arm 1 and the second adjusting arm 2 can continue to be adjusted.
[0035] In this embodiment, preferably, an L-shaped limiting plate 63 is provided on one side of the locking member 61, and in the first preset working position, the limiting plate 63 is engaged with the outer wall of the side locking seat 6; the limiting plate 63 and the locking member 61 form a U-shaped slot, and when the locking member 61 is pushed to the first preset working position, the side wall of the radial opening 60 is just engaged in the U-shaped slot, thereby fixing the locking member 61, so that the locking member 61 is fixed in the first preset working position.
[0036] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A dental oral opening device, characterized in that: It comprises a first adjustment arm and a second adjustment arm, wherein the opening ends of the first adjustment arm and the second adjustment arm are provided with arc-shaped opening plates corresponding to the patient's oral cavity, the first adjustment arm and the second adjustment arm are rotatably connected via a rotating connecting piece, and the operating ends of the first adjustment arm and the second adjustment arm are provided with arc-shaped operating handles; An expansion limiting mechanism is arranged between the first adjusting arm and the second adjusting arm, and the expansion limiting mechanism includes an arc plate and an arc seat corresponding to the arc plate, the arc plate is arranged on the first adjusting arm, the arc seat is arranged on the second adjusting arm, an arc opening cavity is arranged on the arc seat, the arc plate is slidably connected in the arc opening cavity, a ratchet groove is arranged on the arc plate, a pawl assembly is arranged in the arc opening cavity, the pawl assembly includes a limiting pawl, an elastic member and an adjusting member, the limiting pawl is driven by the adjusting member and has a limiting state defined by the ratchet groove and a separation state separated from the ratchet groove.
2. The oral cavity opening device for dentistry according to claim 1, characterized in that: The arc-shaped expansion plate includes a connecting plate connected to the first adjusting arm and the second adjusting arm, a flexible fitting structure is arranged in the connecting plate, and side limiting plates are arranged on opposite sides of the connecting plate.
3. The oral cavity opening device for dentistry according to claim 1, characterized in that: The limiting pawl comprises a rotating end and a locking end which are arranged opposite to each other. A rotating seat is arranged in the arc-shaped opening cavity. The rotating end is rotatably connected to the rotating seat via a rotating shaft.
4. The oral cavity opening device for dentistry according to claim 3, characterized in that: The elastic member is arranged between the rotating seat and the limiting pawl, and the elastic member blocks the limiting pawl on an unlocking rotation stroke in which the limiting pawl rotates in a direction away from the ratchet groove.
5. The oral cavity expansion device for dentistry according to claim 4, characterized in that: The adjusting member includes an adjusting rod fixedly connected to the limiting pawl, and the arc-shaped seat is provided with an arc-shaped opening groove connected to the arc-shaped opening cavity. The adjusting rod is slidably connected in the arc-shaped opening groove. During the unlocking rotation stroke, the adjusting rod slides along the arc-shaped opening groove.
6. The oral cavity opening device for dentistry according to claim 5, characterized in that: A side locking seat is arranged at one side of the arc-shaped seat, a radial opening cavity perpendicular to the arc-shaped opening cavity is arranged in the side locking seat, and a locking piece is slidably arranged in the radial opening cavity.
7. The oral cavity expansion device for dentistry according to claim 6, characterized in that: A locking tooth is provided at the end of the locking piece, and the locking piece slides along the radial opening cavity and has a first preset working position and a second preset working position. In the first preset working position, the locking tooth is locked with the ratchet groove, and in the second preset working position, the locking tooth is separated from the ratchet groove.
8. The oral cavity expansion device for dentistry according to claim 7, characterized in that: An L-shaped limiting plate is arranged on one side of the locking member, and in the first preset working position, the limiting plate is engaged with the outer side wall of the side locking seat.