Mouth gag

Abstract

The utility model discloses a mouth gag, and relates to the field of medical instruments. The mouth gag can open teeth on the two sides of the oral cavity of a patient. According to the technical scheme, the mouth opener comprises a first cross beam, a second cross beam, a first opening structure, a second opening structure and an opening structure. The first cross beam and the second cross beam are arranged in parallel; the first distraction structure is connected with one end of the first cross beam and one end of the second cross beam, the second distraction structure is connected with the other end of the first cross beam and the other end of the second cross beam, and the first cross beam, the second cross beam, the first distraction structure and the second distraction structure form a rectangular mouth opener frame; the lengths of the first distraction structure and the second distraction structure are adjustable; the number of the opening structures is four, and one end of each opening structure is provided with a tooth hook; the first cross beam or the second cross beam is sleeved with the opening structure; each opening structure faces the interior of the mouth opener frame structure, and each tooth hook faces the front.

Description

Technical Field

[0001] The utility model relates to the field of medical instruments, in particular to an opener. Background Art

[0002] An opener is a medical device used to hold open the mouth so that it can be examined or operated on. A pliers-type opener is a common type of opener. As the name suggests, the structure of a pliers-type opener is similar to that of a common pair of pliers, including two hinged handles and a positioning structure. The front end of the handle has a curved structure that can be placed between the patient's teeth. When in use, the front of the opener is brought together and the curved structure is inserted between the two rows of teeth of the patient; the rear ends of the two handles are pinched to open the front ends of the two handles, and the curved structure pries the patient's teeth open; the handles are then positioned with a positioning structure so that the front ends of the handles remain open, thereby achieving the opening function. Chinese patents with application numbers 201520582779.2 and 201320197937.3 disclose this type of opener.

[0003] When used, the aforementioned mouth gag requires the curved structure to be positioned on one side of the patient's mouth. Otherwise, the mouth gag itself would block the oral cavity, hindering oral observation and surgical access. However, this approach has two disadvantages. First, the teeth on only one side of the patient's mouth bear the supporting force, which is high and can easily lead to tooth damage. Second, on the side of the mouth gag that is open, the patient's lips are also stretched, thus ensuring a good oral opening. However, on the side of the mouth gag that is not open, the lips are not stretched, obstructing the oral cavity and somewhat affecting the view during examination or surgery.

[0004] In addition, pliers-type openers are mainly made of metal. Some pliers-type openers have hard plastic on the outer cover of the curved structure to protect the teeth. Although the hardness is reduced to a certain extent, it is still relatively hard and is not the best choice. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide an opener capable of holding open the teeth on both sides of the patient's mouth.

[0006] The technical solution adopted by the utility model is that the opener includes a first crossbeam, a second crossbeam, a first opening structure, a second opening structure and an opening structure;

[0007] The first crossbeam and the second crossbeam are arranged in parallel; the first expansion structure connects one end of the first crossbeam and the second crossbeam, and the second expansion structure connects the other end of the first crossbeam and the second crossbeam; the first crossbeam, the second crossbeam, the first expansion structure and the second expansion structure form a rectangular opener frame; the lengths of the first expansion structure and the second expansion structure are adjustable;

[0008] There are four opening structures, and the opening structures include a connecting sleeve and an opening piece. One end of the opening piece is connected to the connecting sleeve, and the other end of the opening piece has a tooth hook; the connecting sleeves of two opening structures are mounted on the first beam and can move along the first beam, and the connecting sleeves of the other two opening structures are mounted on the second beam and can move along the second beam; the opening pieces of each opening structure face the inside of the opener frame structure, and each tooth hook faces forward.

[0009] Furthermore, the middle part of the first crossbeam is a first arc-shaped portion arched forward, and the connecting sleeve of the opening structure connected to the first crossbeam is mounted on the first arc-shaped portion; the middle part of the second crossbeam is a second arc-shaped portion arched forward, and the connecting sleeve of the opening structure connected to the second crossbeam is mounted on the second arc-shaped portion.

[0010] Furthermore, the cross-sections of the first beam and the second beam are both rectangular, and the first beam and the second beam are both capable of limiting the rotation of the opening structure.

[0011] Furthermore, the opener includes a slider, the first beam has a slide groove arranged along the length direction of the first beam, the slider is located in the slide groove and can slide along the slide groove; the first support structure is fixedly connected to the second beam and hinged to the slider; the second support structure is fixedly connected to the second beam and hinged to the first beam.

[0012] Furthermore, the first expansion structure includes a first adjustment sleeve and two first screws, the two first screws are respectively connected to the second beam and the slider, the threads of the two first screws have opposite rotation directions, and the first adjustment sleeve is sleeved on the two first screws and is threadedly connected to the two first screws.

[0013] Furthermore, the second expansion structure includes a second adjustment sleeve and two second screws, the two second screws are respectively connected to the second beam and the first beam, the threads of the two second screws have opposite rotation directions, and the second adjustment sleeve is sleeved on the two second screws and is threadedly connected to the two second screws.

[0014] Furthermore, the tooth hook is provided with a silicone sleeve.

[0015] The beneficial effects of the present invention are: Figure 6 As shown, when using the present invention, the first and second support structures are first adjusted to shorten, bringing the first and second crossbeams closer together, thereby bringing the two rows of tooth hooks closer together. The tooth hooks are then placed between the patient's two rows of teeth, with the mouth-opener frame positioned in front of the patient's mouth. The first and second support structures are then adjusted to lengthen, increasing the distance between the two rows of tooth hooks, thereby opening the patient's two rows of teeth and maintaining this position. This demonstrates that the present invention can achieve an opening effect.

[0016] The connecting sleeve can move along the first or second crossbeam to adjust the position of the opening structure, so that the two opening structures on the same crossbeam are located on either side of the patient's mouth. This allows the present invention to open the teeth on both sides of the patient's mouth. This not only reduces the force on the teeth, but also prevents the lips from blocking the mouth, solving the problems of existing pliers-type mouth openers. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the main view of the mouth opener;

[0018] Figure 2 for Figure 1 Enlarged image on the left;

[0019] Figure 3 for Figure 1 Enlarged image on the right;

[0020] Figure 4 This is a top view of the mouth opener;

[0021] Figure 5 It is the opening structure diagram;

[0022] Figure 6 Use a state diagram for the mouth opener;

[0023] Figure numerals: first crossbeam 1, first arc-shaped portion 11, slide groove 12, second crossbeam 2, second arc-shaped portion 21, first support structure 3, first screw 31, first adjustment sleeve 32, second support structure 4, second adjustment sleeve 42, second screw 41, opening structure 5, connecting sleeve 51, opening piece 52, tooth hook 521, slider 6, silicone sleeve 7. DETAILED DESCRIPTION

[0024] The present invention will be described in detail below with reference to the accompanying drawings.

[0025] like Figures 1 to 5As shown, the opener includes a first crossbeam 1, a second crossbeam 2, a first support structure 3, a second support structure 4 and an opening structure 5; the first crossbeam 1 and the second crossbeam 2 are arranged in parallel; the first support structure 3 connects one end of the first crossbeam 1 and the second crossbeam 2, and the second support structure 4 connects the other end of the first crossbeam 1 and the second crossbeam 2, and the first crossbeam 1, the second crossbeam 2, the first support structure 3 and the second support structure 4 form a rectangular opener frame; the lengths of the first support structure 3 and the second support structure 4 are adjustable; there are four opening structures 5, and the opening structure 5 includes a connecting sleeve 51 and an opening piece 52, one end of the opening piece 52 is connected to the connecting sleeve 51, and the other end of the opening piece 52 has a tooth hook 521; the connecting sleeves 51 of the two opening structures 5 are mounted on the first crossbeam 1 and can move along the first crossbeam 1, and the connecting sleeves 51 of the other two opening structures 5 are mounted on the second crossbeam 2 and can move along the second crossbeam 2; the opening piece 52 of each opening structure 5 faces the inside of the opener frame structure, and each tooth hook 521 faces forward.

[0026] like Figure 6 As shown, when using the present invention, the first and second support structures 3 and 4 are first adjusted to shorten, thereby bringing the first and second crossbeams 1 and 2 closer together, thereby bringing the two rows of tooth hooks 521 closer together. The tooth hooks 521 are then placed between the patient's two rows of teeth, with the mouth-opener frame positioned in front of the patient's mouth. The first and second support structures 3 and 4 are then adjusted to lengthen, increasing the distance between the two rows of tooth hooks 521, thereby opening the patient's two rows of teeth and maintaining this position. This demonstrates that the present invention can achieve an opening effect.

[0027] The connecting sleeve 51 can be moved along the first crossbeam 1 or the second crossbeam 2, thereby adjusting the position of the opening structure 5 so that the two opening structures 5 on the same crossbeam are located on opposite sides of the patient's mouth. This allows the present invention to open the teeth on both sides of the patient's mouth. This not only reduces the force on the teeth, but also prevents the lips from blocking the mouth, thus solving the problems of existing pliers-type mouth openers.

[0028] The various components of the mouth opener can be made of stainless steel and can be sterilized after use on one patient before being used on the next patient. The specific shape parameters of the tooth hook 521 can be designed with reference to the curved structure of existing pliers-type mouth openers. When the mouth opener is used, the patient's teeth are located in the tooth hook 521.

[0029] Specifically, the utility model preferably has the middle portion of the first crossbeam 1 as a first arc-shaped portion 11 arched forward, and the connecting sleeve 51 of the opening structure 5 connected to the first crossbeam 1 is sleeved on the first arc-shaped portion 11; the middle portion of the second crossbeam 2 is a second arc-shaped portion 21 arched forward, and the connecting sleeve 51 of the opening structure 5 connected to the second crossbeam 2 is sleeved on the second arc-shaped portion 21.

[0030] The significance of providing the first arc portion 11 and the second arc portion 21 is that human teeth are arranged in an arc shape, which matches the physiological structure of the human body.

[0031] The cross-sections of the first and second cross-beams 1 and 2 can be circular, allowing the opening structure 5 to be mounted on the cross-beams and rotate. While this does not affect the use of the present invention, it may make it difficult to control the position of the tooth hook 521 when placed in the patient's mouth. Therefore, the present invention preferably has rectangular cross-sections of the first and second cross-beams 1 and 2, so that both the first and second cross-beams 1 and 2 can restrict the rotation of the opening structure 5.

[0032] The first support structure 3 and the second support structure 4 can be fixedly connected to the first crossbeam 1 and the second crossbeam 2. However, the length adjustment of the first support structure 3 and the second support structure 4 needs to be synchronized. If they are not synchronized, there may be obstruction during adjustment. For this reason, the preferred opener of the utility model includes a slider 6, and the first crossbeam 1 has a slide groove 12 arranged along the length direction of the first crossbeam 1. The slider 6 is located in the slide groove 12 and can slide along the slide groove 12; the first support structure 3 is fixedly connected to the second crossbeam 2 and is hinged to the slider 6; the second support structure 4 is fixedly connected to the second crossbeam 2 and is hinged to the first crossbeam 1.

[0033] In this way, the length adjustment of the first and second expansion structures 3 and 4 can be asynchronous. The first and second crossbeams 1 and 2 do not need to be parallel during adjustment, as long as they are parallel after adjustment. The function of the slider 6 is to accommodate the change in the distance between the ends of the first and second expansion structures 3 and 4 caused by asynchronous length adjustment. It also aims to prevent jamming during adjustment.

[0034] The specific structures of the first support structure 3 and the second support structure 4 can be identical. Specifically, the first support structure 3 includes a first adjustment sleeve 32 and two first screws 31. The two first screws 31 are connected to the second crossbeam 2 and the slider 6, respectively. The threads of the two first screws 31 have opposite rotation directions. The first adjustment sleeve 32 is mounted on the two first screws 31 and is threadedly connected to both first screws 31. The second support structure 4 includes a second adjustment sleeve 42 and two second screws 41. The two second screws 41 are connected to the second crossbeam 2 and the first crossbeam 1, respectively. The threads of the two second screws 41 have opposite rotation directions. The second adjustment sleeve 42 is mounted on the two second screws 41 and is threadedly connected to both second screws 41.

[0035] In this way, the length of the first support structure 3 can be adjusted by rotating the first adjustment sleeve 32 , and the length of the second support structure 4 can be adjusted by rotating the second adjustment sleeve 42 .

[0036] In order to further reduce the damage to the patient's teeth, it is preferred that the tooth hook 521 is covered with a silicone sleeve 7. The silicone sleeve 7 contacts the patient's teeth to reduce pressure, which obviously has the effect of reducing damage to the patient's teeth. The silicone sleeve 7 should be disposable.

Claims

1. An opener, characterized by: It comprises a first crossbeam (1), a second crossbeam (2), a first support structure (3), a second support structure (4) and an opening structure (5); The first crossbeam (1) and the second crossbeam (2) are arranged in parallel; the first opening structure (3) connects one end of the first crossbeam (1) and the second crossbeam (2); the second opening structure (4) connects the other end of the first crossbeam (1) and the second crossbeam (2); the first crossbeam (1), the second crossbeam (2), the first opening structure (3) and the second opening structure (4) form a rectangular opener frame; the lengths of the first opening structure (3) and the second opening structure (4) are adjustable; The number of the opening structures (5) is four, and the opening structures (5) include a connecting sleeve (51) and an opening piece (52), one end of the opening piece (52) is connected to the connecting sleeve (51), and the other end of the opening piece (52) has a tooth hook (521); the connecting sleeves (51) of two opening structures (5) are mounted on the first crossbeam (1) and can move along the first crossbeam (1), and the connecting sleeves (51) of the other two opening structures (5) are mounted on the second crossbeam (2) and can move along the second crossbeam (2); the opening piece (52) of each opening structure (5) faces the inside of the opener frame structure, and each tooth hook (521) faces forward.

2. The mouth opener according to claim 1, characterized in that: The middle portion of the first crossbeam (1) is a first arc-shaped portion (11) arched forward, and a connecting sleeve (51) of the opening structure (5) connected to the first crossbeam (1) is sleeved on the first arc-shaped portion (11); the middle portion of the second crossbeam (2) is a second arc-shaped portion (21) arched forward, and a connecting sleeve (51) of the opening structure (5) connected to the second crossbeam (2) is sleeved on the second arc-shaped portion (21).

3. The mouth opener according to claim 2, characterized in that: The cross-sectional shapes of the first cross-beam (1) and the second cross-beam (2) are both rectangular, and the first cross-beam (1) and the second cross-beam (2) are both capable of limiting the rotation of the opening structure (5).

4. The mouth opener according to claim 3, characterized in that: The invention comprises a slider (6); a first crossbeam (1) is provided with a slide groove (12) arranged along the length direction of the first crossbeam (1); the slider (6) is located in the slide groove (12) and can slide along the slide groove (12); a first support structure (3) is fixedly connected to the second crossbeam (2) and is hinged to the slider (6); and a second support structure (4) is fixedly connected to the second crossbeam (2) and is hinged to the first crossbeam (1).

5. The mouth opener according to claim 4, characterized in that: The first expansion structure (3) comprises a first adjustment sleeve (32) and two first screw rods (31). The two first screw rods (31) are connected to the second crossbeam (2) and the slider (6) respectively. The threads of the two first screw rods (31) have opposite rotation directions. The first adjustment sleeve (32) is sleeved on the two first screw rods (31) and is threadedly connected to the two first screw rods (31).

6. The mouth opener according to claim 5, characterized in that: The second support structure (4) comprises a second adjustment sleeve (42) and two second screw rods (41). The two second screw rods (41) are respectively connected to the second crossbeam (2) and the first crossbeam (1). The threads of the two second screw rods (41) have opposite rotation directions. The second adjustment sleeve (42) is sleeved on the two second screw rods (41) and is threadedly connected to the two second screw rods (41).

7. The mouth opener according to claim 6, characterized in that: The tooth hook (521) is sheathed with a silica gel sleeve (7).

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