Oral cavity mouth gag

Abstract

The utility model discloses an oral cavity mouth gag which comprises a left pincers body, a right pincers body, a left pincers head, a right pincers head, a right pincers head and a left pincers head, a right clamp head is arranged on the front portion of the right clamp body, the connecting shaft is rotationally connected to the middle of the right clamp body, and a channel extending in the front-back direction is formed in the right clamp body; the rotation stopping mechanism comprises a transmission part and a rotation stopping block, the transmission part is arranged in the channel in a penetrating mode and connected with the rotation stopping block, stopping teeth are arranged on the front side of the rotation stopping block, and the rotation stopping block can move forwards in the channel to enable the stopping teeth to be meshed with the gear or move backwards to enable the stopping teeth to be separated from the gear; compared with the prior art, the space occupied by the structure for relatively positioning the left clamp body and the right clamp body is small, the channel formed in the right clamp body is used for providing surrounding protection for the transmission piece, the rotation stopping block and other structures, the exposure of the structures can be reduced, the stability during transportation and use is effectively improved, the shielding to the visual field in the use process is reduced, and the use safety is improved. And the overall practicability is higher.

Description

Technical Field

[0001] The utility model relates to an auxiliary diagnosis instrument, in particular to an oral opening device. Background Art

[0002] During oral treatment, medical staff need to use an opener to pry open the patient's mouth. The opener generally includes two mutually hinged pliers, with one end of the two pliers as an opening part that is inserted into the patient's mouth, and then the two pliers are rotated so that the two opening parts open the patient's mouth. After the mouth is opened, there is usually a positioning structure on the pliers to keep the two pliers relatively positioned. The current positioning structure generally includes a rack connected to one pliers body, a clamp connected to the other pliers body, and a spring. When the two pliers need to be positioned, the spring presses the clamp against the rack to limit the relative rotation of the two pliers.

[0003] In this oral opener with a positioning structure, structures such as the rack, the clamp, and the spring are exposed and take up a large amount of space. There will be problems such as obstruction of vision when in use. When the spring is subjected to external force, the structure on the spring that is riveted to the clamp body is prone to collapse after long-term use. In addition, during storage and transportation, these exposed structures are easily damaged due to collision or pressure. Therefore, there is an urgent need for an oral opener with a more stable positioning structure. Utility Model Content

[0004] The utility model aims to provide an oral opening device to solve one or more technical problems existing in the prior art and at least provide a beneficial choice or create conditions.

[0005] The solution of the utility model to solve the technical problem is:

[0006] The oral opener comprises: a left clamp body, a left clamp head is provided at the front part of which, a connecting shaft is connected to the middle part, and a gear is connected to the connecting shaft; a right clamp body, a right clamp head is provided at the front part of which, the connecting shaft is rotatably connected to the middle part of the right clamp body, and the right clamp body has a channel extending in the front-to-back direction; a stop mechanism, which comprises a transmission member and a stop block, the transmission member is passed through the channel and connected to the stop block, a stop tooth is provided on the front side of the stop block, and the stop block can move forward in the channel and make the stop tooth mesh with the gear or move backward and make the stop tooth separate from the gear.

[0007] This technical solution has at least the following beneficial effects: the middle part of the left pliers body is rotationally connected with the middle part of the right pliers body. When the left pliers body and the right pliers body need to be relatively rotated, the stop block is pulled away from the gear through the transmission member, so that the stop tooth on the stop block and the gear are separated from each other. At this time, the left pliers body and the right pliers body can be relatively rotated around the middle rotation connection position, thereby realizing the left pliers head and the right pliers head approaching or moving away from each other. When it is necessary to keep the left pliers head and the right pliers head open to the oral cavity, the stop block is moved close to the gear so that the stop tooth on the stop block engages with the gear, thereby limiting the relative rotation of the left pliers body and the right pliers body. In this way, less space is required for the structure for relative positioning of the left pliers body and the right pliers body, and the channel formed in the right pliers body is used to provide surrounding protection for structures such as the transmission member and the stop block, which can reduce the exposure of the structure, effectively improve the stability during transportation and use, and reduce the obstruction of the field of vision during use, and the overall practicality is stronger.

[0008] As a further improvement of the above technical solution, a partition is provided in the channel, a through hole is provided on the partition, the transmission member passes through the through hole, a spring is provided between the front side of the partition and the stop block, and the spring can push the stop block forward toward the gear in a natural state. One end of the spring abuts against the partition, and the other end abuts against the stop block, so that the stop block can be pressed toward the gear, so that the stop teeth on the stop block and the gear remain in a state of mutual meshing. When the stop block moves backward, the spring will be compressed. When the external force transmitted to the stop block is removed, the spring recovery can press the stop block toward the gear again, thereby assisting the stop block in resetting.

[0009] As a further improvement of the above technical solution, the transmission member is a rod-shaped structure. When the transmission member with a rod-shaped structure drives the anti-rotation block to move, the anti-rotation block can be easily driven to move forward or backward, thereby directly controlling the locking and unlocking of the gear by the anti-rotation block.

[0010] As another improvement of the above technical solution, the transmission member is a traction rope. When the traction rope is used to drive the anti-rotation block to move, the channel can be a structure with a bending angle. In addition, when the user pulls the transmission member, the force can be applied along a position that is not parallel to the length direction of the channel, which is more flexible and convenient to use.

[0011] As a further improvement of the above technical solution, the bottom corners of the channel are rounded. The rounded bottom corners of the channel can reduce the scraping of the traction rope by the bottom corners of the channel when the transmission member is a traction rope, thereby increasing the service life of the transmission member.

[0012] As a further improvement of the above technical solution, two baffles are arranged at intervals on the left side of the middle of the right caliper body, and the two ends of the connecting shaft are rotatably connected between the two baffles, and the gear is located between the two baffles. The two ends of the connecting shaft are rotatably connected to the two baffles of the right caliper body, respectively, so that the connection structure is more stable during rotation, and the two baffles can shield the two sides of the gear to protect the gear, further improving the overall structural stability in use.

[0013] As a further improvement of the above technical solution, two card slots are provided on the left side of the right caliper body, and the two baffles are inserted into the two card slots. The position of the right caliper body opposite to the card slot is connected with a screw, and the screw passes through the two baffles. During assembly, the two baffles can be connected to the two ends of the connecting shaft, and then the two baffles are respectively inserted into the two card slots on the left side of the right caliper body, so as to realize the rotation connection between the left caliper body and the right caliper body, and then the screw is driven into the right caliper body, and the screw is passed through the two baffles, so as to further fix the two baffles in the right caliper body. When it is used later, if the anti-rotation block, transmission parts and other structures need to be replaced, the screws can be removed, and then the two baffles can be removed from the two card slots, so that the anti-rotation block can be easily moved out from the front end of the channel. Such use is very flexible and convenient, which improves the convenience of later maintenance, cleaning and disinfection, and is more practical.

[0014] As a further improvement of the above technical solution, the rear end of the transmission member is connected with a pull ring. When it is necessary to apply force to the transmission member, the user can put his finger through the pull ring to drive the transmission member to move, thereby improving the convenience of use.

[0015] As a further improvement of the above technical solution, the rear part of the left pliers body is bent to the left and formed with a left finger ring, the rear part of the right pliers body is bent to the right and formed with a right finger ring, and the pull ring is located between the left finger ring and the right finger ring. Since the rear part of the left pliers body and the rear part of the right pliers body are bent to the left and right sides respectively to avoid, a space for accommodating the pull ring is formed, the overall structure is more compact, and it is convenient for fingers to apply force. When using, the user can put the thumb through the left finger ring, the index finger through the pull ring, and then put the middle finger or ring finger through the right finger ring, so that the left pliers body, the right pliers body and the transmission member can be stably applied with force, further improving the use experience.

[0016] As a further improvement of the above technical solution, the outer side of the left clamp head and the outer side of the right clamp head are both covered with flexible sleeves. The flexible sleeves on the outer side of the left clamp head and the outer side of the right clamp head are extended into the patient's oral cavity, which can reduce the discomfort caused by applying force to the inside of the oral cavity, and the flexible sleeves can also be easily removed from the outer side of the left clamp head and the right clamp head for replacement, which reduces the difficulty of cleaning and disinfecting the entire oral opener, and is conducive to avoiding cross infection between patients. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following is a brief description of the drawings required for the description of the embodiments. Obviously, the drawings described are only part of the embodiments of the present utility model, not all of the embodiments, and those skilled in the art can also obtain other design solutions and drawings based on these drawings without creative work.

[0018] Figure 1 It is an overall stereogram of the utility model.

[0019] Figure 2 It is an overall top view of the utility model, wherein the right clamp body is partially cut along the length direction of the channel.

[0020] Figure 3 yes Figure 2 A partial enlarged schematic diagram of .

[0021] In the accompanying drawings: 100 - left clamp body, 110 - left clamp head, 120 - connecting shaft, 130 - gear, 140 - left finger ring, 200 - right clamp body, 210 - right clamp head, 220 - channel, 221 - partition, 222 - spring, 230 - baffle, 240 - right finger ring, 310 - transmission part, 320 - stop block, 330 - pull ring. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present utility model, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] Reference Figure 1 The oral opening device comprises a left clamp body 100, a right clamp body 200 and a rotation-stopping mechanism for limiting or releasing the relative rotation of the left clamp body 100 and the right clamp body 200, wherein a left clamp head 110 is arranged at the front of the left clamp body 100, a connecting shaft 120 is connected to the middle of the left clamp body 100, a gear 130 is connected to the connecting shaft 120, a right clamp head 210 is arranged at the front of the right clamp body 200, and the connecting shaft 120 is rotatably connected to the middle of the right clamp body 200, The right caliper body 200 has a channel 220 extending in the front-to-back direction, and the stop mechanism includes a transmission member 310 and a stop block 320. The transmission member 310 is passed through the channel 220 and connected to the stop block 320. A stop tooth is provided on the front side of the stop block 320. The stop block 320 can move forward in the channel 220 and make the stop tooth engage with the gear 130, or move backward and make the stop tooth separate from the gear 130.

[0027] As can be seen from the above, the middle part of the left pliers body 100 is rotatably connected to the middle part of the right pliers body 200. When the left pliers body 100 and the right pliers body 200 need to be relatively rotated, the stop block 320 is pulled away from the gear 130 through the transmission member 310, so that the stop teeth on the stop block 320 and the gear 130 are separated from each other. At this time, the left pliers body 100 and the right pliers body 200 can be relatively rotated around the middle rotation connection position, so that the left pliers head 110 and the right pliers head 210 can be moved closer to or farther away from each other. When it is necessary to keep the left pliers head 110 and the right pliers head 210 open to the oral cavity, The stop block 320 is placed close to the gear 130 so that the stop teeth on the stop block 320 are engaged with the gear 130, thereby limiting the relative rotation of the left caliper body 100 and the right caliper body 200. In this way, less space is required for the structure for relative positioning of the left caliper body 100 and the right caliper body 200, and the channel 220 formed in the right caliper body 200 is used to provide surrounding protection for structures such as the transmission member 310 and the stop block 320, which can reduce the exposure of the structure, effectively improve the stability during transportation and use, and reduce the obstruction of the field of vision during use, and the overall practicality is stronger.

[0028] In order to assist the anti-rotation block 320 to reset forward and cooperate with the gear 130, a spring 222 can be provided in the channel 220, and the spring 222 is used to provide a forward pressure on the anti-rotation block 320, such as Figure 2 and Figure 3As shown, specifically, a partition 221 is provided in the channel 220, and a through hole is provided on the partition 221. In actual application, a hole can be processed and punched on the right caliper body 200 to form the channel 220, or the right caliper body 200 can directly form the internal channel 220 and partition 221 structure during production, and the transmission member 310 passes through the through hole, and a spring 222 is provided between the front side of the partition 221 and the stop block 320, and the spring 222 can push the stop block 320 forward toward the gear 130 in a natural state. One end of the spring 222 abuts against the partition 221, and the other end abuts against the stop block 320, which can press the stop block 320 toward the gear 130 so that the stop teeth on the stop block 320 and the gear 130 remain in a state of mutual meshing. When the stop block 320 moves backward, the spring 222 is compressed. When the external force transmitted to the stop block 320 is removed, the spring 222 recovers and can press the stop block 320 back toward the gear 130, thereby assisting the stop block 320 in resetting.

[0029] The transmission rod is mainly used to transmit power to the stop block 320, and its structure has various forms. In the first embodiment, the transmission member 310 is a rod-shaped structure, and the transmission rod of the rod-shaped structure is rigid, such as a metal material, a hard plastic material, etc. When the transmission member 310 of the rod-shaped structure drives the stop block 320 to move, the stop block 320 can be easily driven to move forward or backward, thereby directly controlling the locking and unlocking of the gear 130 by the stop block 320.

[0030] In the second embodiment, the transmission member 310 is a traction rope, which can be made of metal wire, fiber and other materials. When the traction rope is used to drive the stop block 320 to move, the channel 220 can be a structure with a bending angle. In addition, when the user pulls the transmission member 310, the force can be applied along a position that is not parallel to the length direction of the channel 220, which is more flexible and convenient to use. Since the traction rope can only provide a backward pulling force to the stop block 320, in order to allow the transmission member 310 to move forward, the front part of the transmission member 310 can be designed to protrude from the channel 220. When in use, the force can be directly applied to the part of the front part of the stop block 320 protruding from the channel 220 to push the stop block 320 forward close to the gear 130.

[0031] When a traction rope is used as the transmission member 310, if the bottom edge of the channel 220 is a right-angled edge, the traction rope is easily scraped against the right-angled bottom edge of the channel 220 repeatedly. After long-term use, the traction rope is easily worn. Therefore, in this embodiment, the bottom edge corner of the channel 220 is rounded. The bottom edge corner of the channel 220 with a rounded design can reduce the scraping of the bottom edge corner of the channel 220 on the traction rope when the transmission member 310 is a traction rope, thereby increasing the service life of the transmission member 310.

[0032] In the above embodiment, one end of the connecting shaft 120 can be directly connected to the right caliper body 200. At this time, only one end of the connecting shaft 120 connected to the right caliper body 200 is used as a rotation connection point between the left caliper body 100 and the right caliper body 200. In order to improve the stability of the connection of the connecting shaft 120, in this embodiment, two baffles 230 are arranged at intervals on the left side of the middle of the right caliper body 200. The two ends of the connecting shaft 120 are rotationally connected between the two baffles 230, and the gear 130 is located between the two baffles 230. The two ends of the connecting shaft 120 are respectively rotationally connected to the two baffles 230 of the right caliper body 200, and the connection structure is more stable during rotation. The two baffles 230 can shield the two sides of the gear 130, protect the gear 130, and further improve the overall structural stability.

[0033] In order to facilitate the disassembly, assembly and replacement of the left caliper body 100 and the right caliper body 200, especially for the maintenance or replacement of the anti-rotation block 320, the transmission part 310 and other structures in the channel 220, the left caliper body 100 and the right caliper body 200 can be a detachable structure. Specifically, two slots are provided on the left side of the right caliper body 200, and the two baffles 230 are inserted into the two slots. The position of the right caliper body 200 opposite to the slot is connected with a screw, and the screw passes through the two baffles 230. In actual application, the two baffles 230 are preset with holes that are compatible with the screws. When the screw is connected to the right caliper body 200, it can pass through the preset holes on the two baffles 230, and then be threadedly connected to the right caliper body 200. During assembly, the two baffles 230 can be connected to the two ends of the connecting shaft 120, and then the two baffles 230 can be respectively inserted into the two slots on the left side of the right caliper body 200, so as to realize the rotation connection between the left caliper body 100 and the right caliper body 200. Then, screws are driven into the right caliper body 200, and the screws are passed through the two baffles 230, so as to further fix the two baffles 230 in the right caliper body 200. When used subsequently, if it is necessary to replace the anti-rotation block 320, the transmission part 310 and other structures, the screws can be removed, and then the two baffles 230 can be removed from the two slots, and the anti-rotation block 320 can be easily moved out from the front end of the channel 220. This is very flexible and convenient to use, which improves the convenience of later maintenance, cleaning and disinfection, and is more practical.

[0034] In the above embodiment, if it is necessary to apply force to the transmission member 310, the transmission member 310 can be directly pulled. In order to make it more convenient to use, in this embodiment, a pull ring 330 is connected to the rear end of the transmission member 310. When it is necessary to apply force to the transmission member 310, the user can put his finger through the pull ring 330 to drive the transmission member 310 to move through the pull ring 330, thereby improving the convenience of use.

[0035] The pull ring 330 can be arranged at the rear of the left finger ring 140 and the right finger ring 240, and in order to more conveniently apply force to the pull ring 330, in this embodiment, the rear of the left pliers body 100 is bent to the left and formed with the left finger ring 140, and the rear of the right pliers body 200 is bent to the right and formed with the right finger ring 240, and the pull ring 330 is located between the left finger ring 140 and the right finger ring 240. Since the rear of the left pliers body 100 and the rear of the right pliers body 200 are bent to the left and right sides respectively, a space for accommodating the pull ring 330 is formed, and the overall structure is more compact and convenient for fingers to apply force. When using, the user can insert the thumb into the left finger ring 140, the index finger into the pull ring 330, and then insert the middle finger or the ring finger into the right finger ring 240, so that the left pliers body 100, the right pliers body 200 and the transmission member 310 can be stably applied with force, further improving the use experience.

[0036] In some embodiments, the outer side of the left clamp head 110 and the outer side of the right clamp head 210 are both covered with flexible sleeves. In practical applications, the flexible sleeves are directly set and located on the outer sides of the left clamp head 110 and the right clamp head 210, and the flexible sleeves can be made of silicone. The flexible sleeves on the outer sides of the left clamp head 110 and the right clamp head 210 are extended into the patient's oral cavity, which can reduce the discomfort caused by applying force to the inside of the oral cavity, and the flexible sleeves can also be easily removed and replaced from the outer sides of the left clamp head 110 and the right clamp head 210, which reduces the difficulty of cleaning and disinfecting the entire oral opening device, and is conducive to avoiding cross infection between patients.

[0037] The preferred implementation modes of the present invention are specifically described above, but the present invention is not limited to the described embodiments. Those skilled in the art may make various equivalent modifications or substitutions without violating the spirit of the present invention, and these equivalent modifications or substitutions are all included in the scope defined by the claims of this application.

Claims

1. An oral opening device, characterized in that: include: A left clamp body (100) is provided with a left clamp head (110) at the front part thereof, and is connected to a connecting shaft (120) at the middle part thereof, and a gear (130) is connected to the connecting shaft (120); A right pliers body (200) is provided with a right pliers head (210) at the front, the connecting shaft (120) is rotatably connected to the middle of the right pliers body (200), and the right pliers body (200) has a channel (220) extending in the front-rear direction; A stop mechanism comprises a transmission member (310) and a stop block (320), wherein the transmission member (310) is passed through the channel (220) and connected to the stop block (320), a stop tooth is arranged on the front side of the stop block (320), and the stop block (320) can move forward in the channel (220) and make the stop tooth mesh with the gear (130) or move backward and make the stop tooth separate from the gear (130).

2. The oral opening device according to claim 1, characterized in that: A partition (221) is arranged in the channel (220), and a through hole is arranged on the partition (221), and the transmission member (310) passes through the through hole. A spring (222) is arranged between the front side of the partition (221) and the stop block (320), and the spring (222) can push the stop block (320) forward toward the gear (130) in a natural state.

3. The oral opening device according to claim 1, characterized in that: The transmission member (310) is a rod-shaped structure.

4. The oral opening device according to claim 1, characterized in that: The transmission member (310) is a traction rope.

5. The oral opening device according to claim 4, characterized in that: The bottom corners of the channel (220) are rounded.

6. The oral opening device according to claim 1, characterized in that: Two baffles (230) are arranged at intervals on the left side of the middle of the right caliper body (200), the two ends of the connecting shaft (120) are rotatably connected between the two baffles (230), and the gear (130) is located between the two baffles (230).

7. The oral opening device according to claim 6, characterized in that: Two slots are arranged on the left side of the right caliper body (200), and the two blocking pieces (230) are inserted into the two slots. A screw is connected to a position of the right caliper body (200) facing the slots, and the screw passes through the two blocking pieces (230).

8. The oral opening device according to claim 1, characterized in that: The rear end of the transmission member (310) is connected to a pull ring (330).

9. The oral opening device according to claim 8, characterized in that: The rear portion of the left clamp body (100) is bent to the left to form a left finger ring (140), the rear portion of the right clamp body (200) is bent to the right to form a right finger ring (240), and the pull ring (330) is located between the left finger ring (140) and the right finger ring (240).

10. The oral opening device according to claim 1, characterized in that: The outer sides of the left clamp head (110) and the outer sides of the right clamp head (210) are both covered with flexible sleeves.

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