Oral traction device and oral traction apparatus

Abstract

Embodiments of the present invention relate to a medical device, particularly to an oral traction device and an oral traction apparatus. The oral traction device includes: a lip bumper and a support arm; wherein, along a first preset axis direction, the lip bumper has: two opposite side portions, a head end and a tail end connecting the two side portions, and the lip bumper is integrally bent and extends from the head end to the tail end to form a hook-shaped structure that can wrap around the upper lip or the lower lip; along a second preset axis direction, the support arm has: a head portion and a tail portion opposite to the head portion, and the head portion of the support arm is also connected to the lip bumper; along the first preset axis direction, the two side portions of the lip bumper are relatively movable with respect to each other, so that the lip bumper can be elongated or shortened along the first preset axis direction. Compared with the prior art, medical staff can change the length of the lip bumper according to the lengths of the patient's upper lip and lower lip to ensure that the lip bumper can completely wrap around the upper lip or the lower lip, thereby improving the imaging quality of the final upper dental arch and lower dental arch.

Description

Technical Field

[0001] Embodiments of the present invention relate to a medical device, and particularly to an oral retractor and an oral retraction device. Background Art

[0002] Currently, when orthodontics is required for teeth, an oral retractor is often used. The doctor pulls the patient's lips and cheeks apart to facilitate imaging of the patient's oral cavity. During use, since four oral retractors are generally needed to pull the patient's lips and cheeks apart, and two of the oral retractors correspond to the patient's upper lip, while the other two oral retractors correspond to the patient's lower lip, the patient's lips and cheeks can be fully pulled apart by the four oral retractors. At the same time, in order to fully pull the patient's lips and cheeks apart, the two oral retractors on the upper lip are generally arranged towards the two ends close to the upper lip respectively, or the two oral retractors on the lower lip are arranged towards the two ends close to the lower lip respectively. However, the inventor found that when the patient's lips and cheeks are pulled apart by two oral retractors, due to the pulling force of the oral retractors on the two ends of the upper lip or the lower lip, the middle parts of the upper lip and the lower lip cannot be affected by the pulling force of the retractor. At this time, although the teeth in the oral cavity can be fully exposed, the middle parts of the upper lip and the lower lip will respectively adhere to the upper front teeth and the lower front teeth, resulting in partial teeth of the upper dental arch and the lower dental arch being blocked by the upper lip and the upper lip respectively when imaging the upper and lower dental arches, thus affecting the final imaging effect. Summary of the Invention

[0003] In order to solve the above problems or at least partially solve the above technical problems, in one embodiment of the present application, an oral retractor is provided, including:

[0004] A lip stop; along a first preset axis direction, the lip stop has: two opposite side portions, a head end and a tail end connecting the two side portions, and the lip stop is bent and extended in a direction from the head end to the tail end as a whole to form a hook-like structure that can wrap around the upper lip or the lower lip;

[0005] A support arm; along a second preset axis direction, the support arm has: a head portion and a tail portion opposite to the head portion, and the head portion is also connected to the lip stop, and the second preset axis direction is perpendicular to the first preset axis direction;

[0006] Wherein, along the first preset axis direction, the two side portions can move relative to each other, so that the lip stop can be elongated or shortened.

[0007] In addition, in another embodiment of the present application, an oral traction device is further provided, including: two oral traction devices as described above, wherein the lip bumper of one of the oral traction devices is used to wrap the upper lip, and the lip bumper of the other oral traction device is used to wrap the lower lip.

[0008] Optionally, along the first preset axis direction, the lip bumper includes: a fixed section, and at least one movable section connected to the fixed section, and the head of the support arm is connected to the fixed section;

[0009] Wherein, along the second preset axis direction, one side of at least one movable section away from the fixed section is one of the side parts of the lip bumper.

[0010] Optionally, there are two movable sections, and they are arranged opposite to each other along the first preset axis direction;

[0011] Wherein, one side of any one of the movable sections away from the fixed section is one of the side parts of the lip bumper, and one side of the other movable section away from the fixed section is the other side part of the lip bumper.

[0012] Optionally, the fixed section has: an inner side surface that can be attached to the inner side of the upper lip or the lower lip, and an outer side surface opposite to the inner side surface, and the head of the support arm is connected to the inner side surface of the fixed section.

[0013] Optionally, the movable section is a sliding member, the sliding member is stacked on the outer side surface or the inner side surface of the fixed section, and the sliding member is slidable relative to the fixed section.

[0014] Optionally, when the sliding member is stacked on the outer side surface of the fixed section, a chute is opened on the outer side surface of the fixed section along the first preset axis direction;

[0015] When the sliding member is stacked on the inner side surface of the fixed section, a chute is opened on the inner side surface of the fixed section along the first preset axis direction;

[0016] The sliding member forms a slider embedded in the chute on the side of the fixed section where the chute is opened.

[0017] Optionally, the oral traction device further includes:

[0018] A guide shaft, fixedly arranged in the chute along the first preset axis direction; the slider is provided with a guide hole along the first preset axis direction through which the guide shaft can pass;

[0019] A resilient member is sleeved on the guiding shaft; along the first preset axis direction, one end of the resilient member abuts against the inner wall of the chute, and the other end of the resilient member abuts against the slider.

[0020] Optionally, the movable section is an elastic telescopic member; along the first preset axis direction, one side of the elastic telescopic member is connected to the fixed section.

[0021] Optionally, the support arm is provided with a slideway along the second preset axis direction, and the oral traction device further includes:

[0022] A control key is slidably arranged in the slideway along the second preset axis direction;

[0023] A first connecting rod; the first connecting rod has a first end portion rotatably connected to one of the side portions and a first root portion rotatably connected to the control key;

[0024] A second connecting rod; the second connecting rod has a second end portion rotatably connected to the other side portion and a second root portion rotatably connected to the control key;

[0025] Wherein, when the control key slides along the slideway towards the head direction, the first end portion and the second end portion respectively drive the two side portions to gradually move away from each other along the first preset axis direction;

[0026] When the control key slides along the slideway towards the tail direction, the first end portion and the second end portion respectively drive the two side portions to gradually approach each other along the first preset axis direction.

[0027] Optionally, the oral traction device further includes:

[0028] A rack is arranged in the slideway along the second preset axis direction;

[0029] A key sleeve is sleeved on the control key and is elastically connected to the control key; one side of the key sleeve relative to the rack has a clamping protrusion that can be clamped between any two adjacent teeth of the rack;

[0030] Wherein, the key sleeve is used to disengage from between any two adjacent teeth of the rack when being pressed to a preset position.

[0031] Optionally, the head of the support arm is detachably connected to the fixed section.

[0032] Optionally, the fixed section is provided with a waist-shaped hole along the first preset axis direction, the head is arranged on the inner side surface of the fixed section, and the head is provided with a threaded hole corresponding to the waist-shaped hole;

[0033] The oral traction device further includes:

[0034] A locking member for locking or releasing the head and the fixed section; the locking member includes: a stud and a flange portion coaxially arranged with the stud, the stud passes through the waist-shaped hole and is screwed with the threaded hole, and the flange portion is used for abutting against the outer side surface of the fixed section;

[0035] Wherein, after the locking member releases the head and the fixed section, the support arm is slidable along the first preset axis direction, and the support arm is rotatable around the axis direction of the stud.

[0036] Optionally, the head is a bent section that fits against the inner side surface of the fixed section.

[0037] Optionally, the oral traction device further includes: a first pliers body and a second pliers body that cross each other around a pivot axis, and the first pliers body and the second pliers body are hinged to each other with the crossing part as the pivot point;

[0038] Wherein, the first pliers body is detachably connected to the tail of the support arm of one of the oral traction devices, and the second pliers body is detachably connected to the tail of the support arm of the other oral traction device.

[0039] Compared with the prior art, since the oral traction device includes a lip bumper and a support arm, and at the same time, both ends of the lip bumper along the first preset axis direction are two side parts, and the two side parts can move relative to each other along the first preset axis direction, so that the lip bumper can be elongated or shortened, thereby changing the length of the lip bumper. Therefore, in actual application, medical staff can change the length of the lip bumper according to the lengths of the upper lip and the lower lip of the patient to ensure that the two lip bumpers can respectively completely wrap the upper lip or the lower lip. When the lip bumper is pulled by the support arm, the upper lip or the lower lip can be completely pulled apart, effectively avoiding that part of the upper lip adheres to the upper dental arch or part of the lower lip adheres to the lower dental arch, so that the upper dental arch and the lower dental arch can be fully exposed and avoided being blocked. Therefore, the final imaging quality of the upper dental arch and the lower dental arch can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the following drawings are only used to illustrate some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other technical features, connection relationships and even method steps not mentioned in these drawings can also be obtained.

[0041] Figure 1 Structural schematic diagram of the oral traction device according to the first embodiment of the present invention;

[0042] Figure 2 Schematic diagram of the lip guard in the first embodiment of the present invention when the movable section uses a sliding component to cooperate with the fixed section;

[0043] Figure 3 Schematic diagram of the two sliding components in the lip guard of the first embodiment of the present invention when stacked on the outer side of the fixed section;

[0044] Figure 4 For Figure 3 Cross-sectional view taken at A-A in;

[0045] Figure 5 Schematic diagram of the two sliding components in the lip guard of the first embodiment of the present invention when stacked on the inner side of the fixed section;

[0046] Figure 6 For Figure 5 Cross-sectional view taken at B-B in;

[0047] Figure 7 Schematic diagram of the structure of the lip guard with a rebound component added in the first embodiment of the present invention;

[0048] Figure 8 Schematic diagram of the structure of the lip guard when contracted in the oral traction device of the second embodiment of the present invention;

[0049] Figure 9 Schematic diagram of the structure of the lip guard when expanded in the oral traction device of the second embodiment of the present invention;

[0050] Figure 10 Schematic diagram of the structure of the oral traction device of the third embodiment of the present invention;

[0051] Figure 11 For Figure 10 Local enlarged view at C in;

[0052] Figure 12 Assembly schematic diagram of the key sleeve, the key and the rack when the key sleeve is in the initial position in the third embodiment of the present invention;

[0053] Figure 13 Assembly schematic diagram of the key sleeve, the key and the rack when the key sleeve is pressed to the preset position in the third embodiment of the present invention;

[0054] Figure 14 Schematic diagram of the structure of the oral traction device of the fourth embodiment of the present invention;

[0055] Figure 15 Cross-sectional schematic diagram of the oral traction device of the fourth embodiment of the present invention along the second preset axis direction;

[0056] Figure 16 Schematic structural diagram of the oral traction device according to the fifth embodiment of the present invention.

[0057] Explanation of reference numerals

[0058] 1 - Lip bumper; 11 - Side part; 12 - Head end; 13 - Tail end; 14 - Fixed section; 141 - Inner side surface; 142 - Outer side surface; 143 - Slide groove; 144 - Channel; 145 - Waist-shaped hole; 15 - Sliding member; 151 - Slide block; 152 - Channel; 16 - Elastic telescopic member

[0059] 2 - Support arm; 21 - Head part; 22 - Tail part; 23 - Slideway

[0060] 3 - Guide shaft

[0061] 4 - Spring

[0062] 5 - Control key; 51 - Upper surface

[0063] 6 - First connecting rod; 61 - First end; 62 - First root

[0064] 7 - Second connecting rod; 71 - Second end; 72 - Second root

[0065] 8 - Rack

[0066] 9 - Button sleeve; 91 - Clamping protrusion

[0067] 10 - Locking member; 101 - Stud; 102 - Flange part; 103 - Nut

[0068] 20 - First jaw; 201 - First ring body

[0069] 30 - Second jaw; 301 - Second ring body Detailed implementation manners

[0070] To make the objectives, technical solutions, and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are some, but not all, of the embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present application without creative efforts shall fall within the scope of protection of the present application.

[0071] In the prior art, when orthodontics is required for teeth, an oral retractor is often used. The doctor uses the oral retractor to pull the patient's lips and cheeks apart to facilitate imaging of the patient's oral cavity. During use, since the patient's lips and cheeks are generally pulled apart using an oral retractor, and two oral retractors are required for the patient's upper lip and two oral retractors are required for the patient's lower lip, the patient's lips and cheeks are completely pulled apart by the oral retractor. At the same time, in order to fully pull apart the patient's lips and cheeks, the two oral retractors for the upper lip are generally arranged towards the two ends close to the upper lip, or the two oral retractors for the lower lip are respectively arranged towards the two ends close to the lower lip. However, the inventor found that when the patient's lips and cheeks are pulled apart by two oral retractors, since the two ends of the upper lip or the two ends of the lower lip are respectively affected by the pulling force of their respective oral retractors, the middle part of the upper lip and the middle part of the lower lip cannot be affected by the pulling force of the retractor. At this time, although the teeth in the oral cavity can be fully exposed, the middle part of the upper lip and the middle part of the lower lip will respectively adhere to the upper front teeth and the lower front teeth, resulting in some teeth of the upper dental arch and some teeth of the lower dental arch being blocked by the upper lip and the upper lip respectively when imaging the upper and lower dental arches, thus affecting the final imaging effect.

[0072] Embodiment 1

[0073] To solve the above problems, an embodiment of the present application provides an oral retractor, as Figure 1 shown, including: a lip guard 1 and a support arm 2. Among them, along the first preset axis direction, the lip guard 1 has: two opposite side portions 11, a head end 12 and a tail end 13 connecting the two side portions 11, and the lip guard 1 is bent and extended in the direction from the head end 12 to the tail end 13 as a whole to form a hook-shaped structure that can wrap around the upper lip or the lower lip.

[0074] Secondly, as Figure 1 shown, along the second preset axis direction, the support arm 2 has: a head portion 21 and a tail portion 22 opposite to the head portion 21, and the head portion 21 of the support arm 2 is also connected to the lip guard 1, so that the second preset axis direction can be perpendicular to the first preset axis direction.

[0075] In addition, as Figure 1 shown, along the first preset axis direction, the two side portions 11 of the lip guard 1 can move relative to each other, so that the lip guard 1 can be elongated or shortened along the first preset axis direction.

[0076] It is not difficult to see from the above that since the oral traction device includes a lip bumper 1 and a support arm 2, and at the same time, both ends of the lip bumper 1 in the first preset axis direction are two side portions 11, and the two side portions 11 can move relative to each other in the first preset axis direction, so that the lip bumper 1 can be elongated or shortened, thereby changing the length of the lip bumper 1. Therefore, in actual application, medical staff can change the length of the lip bumper according to the lengths of the upper lip and the lower lip of the patient to ensure that the lip bumper 1 can completely wrap the upper lip or the lower lip. During the actual application process, the lip bumper 1 can be pulled by the support arm 2 so that the lip bumper 1 can completely pull open the upper lip or the lower lip, effectively avoiding that part of the upper lip adheres to the upper dental arch or part of the lower lip adheres to the lower dental arch, so as to ensure that the upper dental arch or the lower dental arch can be fully exposed, and thus the imaging quality of the final upper dental arch or lower dental arch can be improved.

[0077] Specifically, in this embodiment, as Figure 2 and Figure 3 shown, first, along the first preset axis direction, the lip bumper 1 includes: a fixed section 14, at least one movable section connected to the fixed section 14, and the head 21 of the support arm 2 is connected to the fixed section 14. Second, Figure 4 and Figure 6 shown, the fixed section 14 has: an inner side surface 141 that can fit against the upper lip or the lower lip, and an outer side surface 142 opposite to the inner side surface 141, and the head 21 of the support arm 2 is connected to the inner side surface 141 of the fixed section 14. At the same time, along the first preset axis direction, the side of at least one movable section away from the fixed section 14 is one of the side portions 11 of the lip bumper 1. For example, when there is one movable section, as Figure 2 shown, the side of the fixed section 14 away from the movable section is the other side portion 11.

[0078] However, as a preferred solution, as Figure 3 shown, in this embodiment, there are two movable sections, and the two movable sections are arranged opposite to each other along the first preset axis direction. Therefore, the side of any one of the movable sections away from the fixed section 14 can be used as one of the side portions 11 of the lip bumper 1, and the side of the other movable section away from the fixed section 14 can be used as the other side portion 11 of the lip bumper 1, so that the two side portions 11 can also move relative to each other along the first preset axis direction.

[0079] And it should be noted that, in this embodiment, as Figures 3 to 6 shown, the movable section can be a sliding member 15, and at the same time, the sliding member 15 can be stacked on the outer side surface 142 or the inner side surface 141 of the fixed section 14, so that the sliding member 15 can slide relative to the fixed section 14. And it is worth mentioning that when the sliding member 15 is stacked on the outer side surface 142 of the fixed section 14, as Figure 3 and Figure 4As shown, a sliding groove 143 is formed on the outer side surface 142 of the fixed section 14 along the first preset axis direction. When the sliding member 15 is stacked on the inner side surface 141 of the fixed section 14, as Figure 5 and Figure 6 shown, a sliding groove 143 is formed on the inner side surface 141 of the fixed section 14 along the first preset axis direction. At the same time, a slider 151 that is embedded in the sliding groove 143 is formed on the sliding member 15 relative to the side of the fixed section 14 where the sliding groove 143 is formed. It can be easily seen from this that through the cooperation of the slider 151 and the sliding groove 143, the sliding of the sliding member 15 along the first preset axis direction can be guided, thereby improving the sliding performance of the sliding member 15.

[0080] In addition, as a preferred solution, in order to make the sliding member 15 fit more closely with the fixed section 14, when the sliding member 15 is stacked on the outer side surface 142 of the fixed section 14, as Figure 4 shown, both ends of the sliding member 15 along its bending direction are bent towards opposite directions. It can be easily seen from this that along the bending direction of the entire lip guard 1, channels 152 that can be embedded by both ends of the fixed section 14 are respectively formed at both ends of the sliding member 15, so that when the sliding member 15 slides along the first preset axis direction, the fixed section 14 can also be supported, thereby avoiding the separation between the sliding member 15 and the fixed section 14. When the sliding member 15 is stacked on the inner side surface 141 of the fixed section 14, as Figure 6 shown, both ends of the fixed section 14 along its bending direction are bent towards opposite directions. It can be easily seen from this that along the bending direction of the entire lip guard 1, another channel 144 that can be embedded by both ends of the sliding member 15 is respectively formed at both ends of the fixed section 14, so that when the sliding member 15 slides along the first preset axis direction, the fixed section 14 can support the sliding member 15, thereby also avoiding the separation between the sliding member 15 and the fixed section 14.

[0081] In addition, it is worth mentioning that in order to facilitate the lip guard 1 to adapt to upper or lower lips of different lengths, as Figure 7 shown, the oral traction device of this embodiment further includes: a guide shaft 3 and a resilient member. Among them, the guide shaft 3 is fixedly arranged in the sliding groove 143 along the first preset axis direction. In order to enable the slider 151 to slide normally in the sliding groove 143, a guide hole (not marked in the figure) that can be penetrated by the guide shaft 3 is formed on the slider 151 along the first preset axis direction. Secondly, the resilient member can adopt a spring 4 in this embodiment. The spring 4 is sleeved on the guide shaft 3, and, through Figure 7It is not difficult to see that along the direction of the first preset axis, one end of the spring 4 abuts against the inner wall of the chute 143, and the other end of the spring 4 abuts against the slider 151. Thus, it is not difficult to see that in practical applications, under the resilience of the spring 4, the slider 151 can drive the sliding member 15 to slide away from the fixed section 14, so that the side portion 11 of the sliding member 15 can automatically fit against the edge portions at both ends of the oral cavity, thereby wrapping the entire upper lip or lower lip to achieve the purpose of rapid self-adaptation.

[0082] Moreover, it should be noted that in this embodiment, the sliding member 15 can be made of a rigid member or a flexible member. When the sliding member 15 is made of a rigid member, the sliding member 15 can be, for example, a plastic part, a metal part, etc. When the sliding member 15 is made of a flexible member, the sliding member 15 can be, for example, a rubber part, a silica gel part or other gum-like parts. In this embodiment, the type of the sliding member 15 is not specifically limited.

[0083] Embodiment 2

[0084] The second embodiment of the present invention relates to an oral traction device. The second embodiment is generally the same as the solution of the first embodiment, and the main difference is that in the first embodiment, the movable section is a sliding member 15, while in this embodiment, as Figure 8 and Figure 9 shown, the movable section can also be an elastic telescopic member 16. And when there is one elastic telescopic member 16, along the direction of the first preset axis, the elastic telescopic member 16 is connected to one side of the fixed section 14. When there are two elastic telescopic members 16, as Figure 8 and Figure 9 shown, along the direction of the first preset axis, one elastic telescopic member 16 is connected to one side of the fixed section 14, and the other elastic telescopic member 16 is connected to the other side of the fixed section 14.

[0085] It can be seen from the above that through the resilience of the elastic telescopic member 16 itself, the two side portions 11 can also be adaptively and tightly attached to the edge portions at both ends of the oral cavity, so that it can also ensure that the lip guard 1 can completely wrap the upper lip or the lower lip, and the upper lip or the lower lip can be completely pulled apart.

[0086] Specifically, in this embodiment, the elastic telescopic member 16 can be a rigid part such as an elastic telescopic rod, or can also be a flexible part with resilience characteristics such as silica gel and rubber. In addition, in this embodiment, as a preferred solution, the elastic telescopic member 16 and the fixed section 14 can be detachably connected, such as snap connection or bolt connection. Thus, medical staff can use different types of elastic telescopic members 16 according to actual needs.

[0087] Embodiment 3

[0088] The third embodiment of the present invention relates to an oral traction device. The third embodiment is a further improvement based on the first and second embodiments. The main improvement lies in that, in this embodiment, as Figure 10 shown, the support arm 2 is provided with a slideway 23 along the second preset axis direction. In addition, the oral traction device of this embodiment further includes: a control key 5, a first connecting rod 6, and a second connecting rod 7.

[0089] Among them, as Figure 10 and Figure 11 shown, the control key 5 is slidably arranged in the slideway 23 along the second preset axis direction. And the first connecting rod 6 and the second connecting rod 7 are respectively arranged on both sides of the control key 5. Among them, as Figure 10 and Figure 11 shown, the first connecting rod 6 has: a first end 61 rotatably connected to one of the side parts 11, and a first root 62 rotatably connected to the control key 5. Similarly, the second connecting rod 7 has: a second end 71 rotatably connected to the other side part 11, and a second root 72 rotatably connected to the control key 5.

[0090] It can be easily seen from this that since the first end 61 of the first connecting rod 6 and the second end 71 of the second connecting rod 7 are both rotatably connected to the control member 5, and at the same time, the first root 62 of the first connecting rod 6 and the second root 72 of the second connecting rod 7 are respectively rotatably connected to the two side parts 11. Therefore, in actual application, taking the lip guard 1 of the oral traction device of this embodiment with two movable sections as two sliding members 15 as an example, when the control key 5 slides along the slideway 23 and towards the head 21 of the support arm 2, the first end 61 of the first connecting rod 6 and the second end 71 of the second connecting rod 7 respectively drive the two side parts 11 to gradually move away from each other along the first preset axis direction, that is, drive the two sliding members 15 to linearly slide in the direction of moving away from each other. And when the control key 5 slides along the slideway 23 and towards the tail 22 of the support arm 2, the first end 61 of the first connecting rod 6 and the second end 71 of the second connecting rod 7 also respectively drive the two side parts 11 to gradually approach each other along the first preset axis direction, that is, drive the two sliding members 15 to linearly slide in the direction of approaching each other. From the above content, it can be seen that in actual application, medical staff can easily control the relative sliding of the two sliding members 15 by sliding the control key 5, thereby facilitating the medical staff to adjust the length of the lip guard 1.

[0091] And when the two movable sections of the lip guard 1 are two elastic telescopic members 16, the first connecting rod 6 and the second connecting rod 7 will respectively drive the two elastic telescopic members 16 to perform telescopic movement along the first preset axis direction under the sliding action of the control key 5, so as to also achieve the purpose of adjusting the relative position between the two side parts 11.

[0092] In addition, as an optimal solution, after the lip guard 1 completely wraps the upper lip or the lower lip, the relative positions of the two movable segments are fixed to prevent the two movable segments from tearing the edge parts at both ends of the oral cavity due to excessive resilience. As Figures 10 to 13 shown, the oral traction device of this embodiment further includes a rack 8 and a key sleeve 9.

[0093] Among them, as Figure 11 , Figure 12 and Figure 13 shown, the rack 8 is arranged in the slideway 23 along the second preset axis direction, and the key sleeve 9 is sleeved on the control key 5 and elastically connected to the upper surface 51 of the control key 5. At the same time, a clamping protrusion 91 that can be clamped between any two adjacent teeth of the rack 8 is provided on one side of the key sleeve 9 relative to the rack 8. Specifically, taking the movable segment as the sliding member 15 as an example for illustration, in the actual application process, when the key sleeve 9 is pressed to the preset position, as Figure 13 shown, the clamping protrusion 91 of the key sleeve 9 can be disengaged from between any two adjacent teeth of the rack 8, so that the control key 5 can slide normally along the second preset axis direction at this time, and the adjustment of the sliding member 15 can be realized. When the key sleeve 9 rebounds to the initial position, as Figure 11 and Figure 12 shown, at this time, the clamping protrusion 91 on the key sleeve 9 can be directly clamped between any two adjacent teeth of the rack 8. At this time, the control key 5 can be fixed at the current position through the key sleeve 9 to ensure that the sliding member 15 will not continue to apply force to the edge parts at both ends of the oral cavity under the resilience of the spring 4, thereby avoiding the tearing phenomenon of the edge parts at both ends of the oral cavity.

[0094] Embodiment 4

[0095] The fourth embodiment of the present invention relates to an oral traction device. The fourth embodiment is further improved on the basis of the first, second, and third embodiments. The main improvement lies in that, as Figure 14 and Figure 15 shown, in this embodiment, the head 21 of the support arm 2 is detachably connected to the fixed segment 14, so that the support arm 2 can be adapted to lip guards 1 of different sizes to meet more patient groups.

[0096] Specifically, in this embodiment, as Figure 14 shown, the fixed segment 14 is provided with a waist-shaped hole 145 along the first preset axis direction. The head 21 of the support arm 2 is arranged on the inner side surface of the fixed segment 14, and a threaded hole (not marked in the figure) corresponding to the waist-shaped hole 145 is provided in the head 21 of the support arm 2. In addition, as Figure 14 and Figure 15As shown in the figure, the oral traction device of the present embodiment further includes a locking member 10. And the locking member 10 can be used to lock or loosen the head 21 of the support arm 2 and the fixed section 14 of the lip bumper 1.

[0097] And, it is worth mentioning that in order to enable the locking member 10 to lock and fix the head 21 of the support arm 21 and the fixed section 14, in the present embodiment, as Figure 15 shown, the locking member 10 includes a stud 101, a flange portion 102 coaxially arranged with the stud 101, and a nut 103 screwed onto the stud 101. During actual assembly, the stud 101 can be passed through the waist-shaped hole 145 and screwed into the threaded hole on the head 21 of the support arm 2, while the flange portion 102 can directly abut against the inner side surface 141 of the fixed section 14, and the nut 103 can directly abut against the outer side surface 142 of the fixed section 14, so that the head 21 of the support arm 2 can be locked and fixed to the fixed section 14.

[0098] And, by Figure 15 it is not difficult to see that when the locking member 10 loosens the head 21 of the support arm 2 and the fixed section 14 of the lip bumper 1, the support arm 2 can still slide linearly along the waist-shaped hole 145, that is, the whole support arm 2 can slide along the first preset axis direction. At the same time, the support arm 2 can also rotate around the axis of the stud 101 of the locking member 10, so that the support arm 2 can achieve the purpose of adjusting the position on the lip bumper 1. In actual application, medical staff can finely adjust the position of the support arm 2 according to the shooting requirements, so that the upper lip or the lower lip can be more easily pulled apart.

[0099] In addition, as a preferred solution, in the present embodiment, as Figure 14 and Figure 15 shown, the head 21 of the support arm 2 is a bent section that fits against the inner side surface 141 of the fixed section 14, so that the head 21 of the support arm 2 can cooperate with the fixed section 14 more stably. At the same time, since the head 21 of the head 21 is a bent section, it can also fit well against the upper lip or the lower lip of the patient, so that when the upper lip and the lower lip of the patient are pulled apart, the patient will not feel uncomfortable, improving the comfort of the patient.

[0100] Embodiment Five

[0101] The fifth embodiment of the present invention relates to an oral traction device. As Figure 16 shown, the oral traction device includes two oral traction devices as described in any one of the first to fourth embodiments. And, the lip bumper 1 of one oral traction device is used to wrap the upper lip, and the lip bumper 1 of the other oral traction device is used to wrap the lower lip.

[0102] It is not difficult to find from the above that the upper lip and the lower lip can be pulled away from each other by two oral traction devices, so that the upper dental arch and the lower dental arch can be fully exposed.

[0103] In addition, as a preferred solution, as Figure 16 shown, the oral traction device of the present embodiment further includes: a first pliers body 20 and a second pliers body 30 that cross each other around a pivot axis. Among them, the first pliers body 20 and the second pliers body 30 use the crossing part as a pivot point and are hinged to each other. In addition, as Figure 16 shown, the first pliers body 20 is detachably connected to the tail 22 of the support arm 2 of one of the oral traction devices, and the second pliers body 30 is detachably connected to the tail 22 of the support arm 2 of the other oral traction device. It can be easily seen from this that in actual application, by the mutual pivoting of the first pliers body 20 and the second pliers body 30, the two oral traction devices can be simultaneously driven to pull and clamp the upper lip and the lower lip respectively, so that the oral traction device of the present embodiment can achieve single-handed operation.

[0104] Moreover, it is worth mentioning that, however, in order to further facilitate the operation of the oral traction device, as Figure 16 shown, a first ring body 201 is formed at one end of the first pliers body 20 away from one of the support arms 2, and a second ring body 301 is formed at one end of the second pliers body 30 away from the other support arm 2. The control of the oral traction device can be further facilitated through the first ring body 201 and the second ring body 301.

[0105] Finally, it should be noted that those of ordinary skill in the art can understand that in order to enable readers to better understand the present application, many technical details are proposed in the embodiments of the present application. However, even without these technical details and various changes and modifications based on the above embodiments, the technical solutions required to be protected by the claims of the present application can be basically realized. Therefore, in actual application, various changes can be made to the above embodiments in form and details without departing from the spirit and scope of the present application.

Claims

1. An oral traction device, characterized in that, Comprising: Lip bumper; Along the first preset axis direction, the lip bumper has: two opposite side portions, a head end and a tail end connecting the two side portions, and the lip bumper is bent and extended in the direction from the head end to the tail end as a whole to form a hook-shaped structure that can wrap around the upper lip or the lower lip; Support arm; along the second preset axis direction, the support arm has: a head portion and a tail portion opposite to the head portion, and the head portion is also connected to the lip bumper, and the second preset axis direction is perpendicular to the first preset axis direction; Wherein, along the first preset axis direction, the two side portions can move relative to each other to make the lip bumper elongate or shorten; Along the first preset axis direction, the lip bumper includes: a fixed section, at least one movable section connected to the fixed section, and the head portion of the support arm is connected to the fixed section; There are two of the movable sections, and they are arranged opposite to each other along the first preset axis direction; One side of any one of the movable sections away from the fixed section is one of the side portions of the lip bumper, and the other side of the other movable section away from the fixed section is the other side portion of the lip bumper; The fixed section has: an inner side surface that can be attached to the inner side of the upper lip or the lower lip, and an outer side surface opposite to the inner side surface, and the head portion of the support arm is connected to the inner side surface of the fixed section; 2. The oral traction device according to claim 1, wherein The movable section is a sliding member, the sliding member is stacked on the outer side surface or the inner side surface of the fixed section, and the sliding member is slidable relative to the fixed section; 3. The oral traction device according to claim 2, characterized in that, When the sliding member is stacked on the outer side surface of the fixed section, a chute is opened on the outer side surface of the fixed section along the first preset axis direction; When the sliding member is stacked on the inner side surface of the fixed section, a chute is opened on the inner side surface of the fixed section along the first preset axis direction; The sliding member forms a slider embedded in the chute on the side of the fixed section where the chute is opened; 4. The oral traction device according to claim 3, wherein The oral traction device further includes: Guide shaft, fixedly arranged in the chute along the first preset axis direction; the slider is provided with a guide hole that can be penetrated by the guide shaft along the first preset axis direction; Rebound member, sleeved on the guide shaft; along the first preset axis direction, one end of the rebound member abuts against the inner wall of the chute, and the other end of the rebound member abuts against the slider; 5. The oral traction device according to claim 1, characterized in that, The movable section is an elastic telescopic member; along the first preset axis direction, the elastic telescopic member is connected to one side of the fixed section; 6. The oral traction device according to claim 1, characterized in that, A slideway is opened on the support arm along the second preset axis direction, and the oral traction device further includes: Control key, slidably arranged in the slideway along the second preset axis direction; First connecting rod; the first connecting rod has: a first end portion rotatably connected to one of the side portions, and a first root portion rotatably connected to the control key; Second connecting rod; the second connecting rod has: a second end portion rotatably connected to the other side portion, and a second root portion rotatably connected to the control key; Wherein, when the control key slides along the slideway towards the head direction, the first end part and the second end part respectively drive the two side parts to gradually move away from each other along the first preset axis direction; When the control key slides along the slideway towards the tail direction, the first end part and the second end part respectively drive the two side parts to gradually approach each other along the first preset axis direction.

7. The oral traction device according to claim 6, wherein, The oral traction device further includes: A rack, which is arranged in the slideway along the second preset axis direction; A key sleeve, which is sleeved on the control key and elastically connected to the control key; a clamping protrusion capable of being clamped between any two adjacent teeth of the rack is arranged on one side of the key sleeve relative to the rack; Wherein, when the key sleeve is pressed to a preset position, the clamping protrusion disengages from between any two adjacent teeth of the rack.

8. The oral traction device according to claim 1, characterized in that, The head of the support arm is detachably connected to the fixed section.

9. The oral traction device according to claim 8, wherein The fixed section is provided with a waist-shaped hole along the first preset axis direction, the head is arranged on the inner side surface of the fixed section, and the head is provided with a threaded hole corresponding to the waist-shaped hole; The oral traction device further includes: A locking member, which is used to lock or loosen the head and the fixed section; the locking member includes: a stud and a flange portion coaxially arranged with the stud, the stud passes through the waist-shaped hole and is screwed with the threaded hole, and the flange portion is used to abut against the outer side surface of the fixed section; Wherein, after the locking member loosens the head and the fixed section, the support arm is slidable along the first preset axis direction, and the support arm is rotatable around the axis direction of the stud.

10. The oral traction device according to claim 9, wherein The head is a bent section that fits against the inner side surface of the fixed section.

11. An oral traction device, characterized in that, Including: Two oral traction devices according to any one of claims 1-10, wherein the lip guard of one oral traction device is used to wrap the upper lip, and the lip guard of the other oral traction device is used to wrap the lower lip.

12. The oral traction device according to claim 11, wherein The oral traction device further includes: a first pliers body and a second pliers body that cross each other around a pivot axis, and the first pliers body and the second pliers body are hinged to each other with the crossing part as the pivot point; Wherein, the first pliers body is detachably connected to the tail of the support arm of one of the oral traction devices, and the second pliers body is detachably connected to the tail of the support arm of the other oral traction device.

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