Oral cavity tractor and oral cavity traction device

Abstract

The embodiment of the invention relates to a medical instrument, in particular to an oral cavity tractor and an oral cavity traction device, and the oral cavity tractor comprises a lip baffle and a supporting arm; wherein in the first preset axis direction, the lip shield is provided with two opposite side parts, a head end and a tail end, the head end and the tail end are connected with the two side parts, and the whole lip shield bends and extends in the direction from the head end to the tail end to form a hook-shaped structure capable of wrapping the upper lip or the lower lip; in the second preset axis direction, the supporting arm is provided with a head part and a tail part opposite to the head part, and the head part of the supporting arm is further connected with the lip baffle; in the first preset axis direction, the two side portions of the lip block can move relative to each other, so that the lip block can extend or retract in the first preset axis direction. Compared with the prior art, medical staff can change the length of the lip shield according to the lengths of the upper lip and the lower lip of a patient so as to ensure that the lip shield can completely wrap the upper lip or the lower lip, and therefore the imaging quality of the final upper dentition and the final lower dentition can be improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to a medical instrument, and more particularly to an oral traction device and an oral traction apparatus. Background Art

[0002] At present, when teeth need orthodontic treatment, oral retractors are often needed. The doctor pulls the patient's lips and cheeks apart to facilitate filming of the patient's mouth. During use, 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, and the other two oral retractors correspond to the patient's lower lip. The patient's lips and cheeks can be completely pulled apart by the four oral retractors. At the same time, in order to be able to fully pull the patient's lips and cheeks apart, the two oral retractors on the upper lip are generally set towards the two ends close to the upper lip, or the two oral retractors on the lower lip are set 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, the two ends of the upper lip or the two ends of the lower lip are affected by the pulling force of the oral retractors, so that the middle part of the upper lip and the middle part of the lower lip cannot be affected by the pulling force of the retractors. At this time, although the teeth in the mouth can be fully exposed, the middle part of the upper lip and the middle part of the lower lip will respectively fit the upper incisors and the lower incisors, so that when the upper and lower dentitions are photographed, part of the teeth of the upper dentition and part of the teeth of the lower dentition will still be blocked by the upper lip and the upper lip respectively, thereby 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, comprising:

[0004] Lip guard; along the first preset axis direction, the lip guard has: two side portions opposite to each other, a head end and a tail end connecting the two side portions, and the lip guard as a whole is bent and extended from the head end to the tail end to form a hook-shaped structure that can wrap 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, the head portion is also connected to the lip stopper, and the second preset axis direction is perpendicular to the first preset axis direction;

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

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

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

[0009] Wherein, along the direction of the second preset axis, a side of at least one of the movable segments away from the fixed segment is one of the side portions of the lip stop.

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

[0011] Wherein, a side of any one of the movable sections away from the fixed section is one of the side portions of the lip stopper, and a side of another movable section away from the fixed section is the other side portion of the lip stopper.

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

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

[0014] Optionally, when the sliding component is overlapped on the outer side surface of the fixed section, a sliding groove is provided on the outer side surface of the fixed section along the direction of the first preset axis;

[0015] When the sliding component is overlapped on the inner side surface of the fixed section, a sliding groove is provided on the inner side surface of the fixed section along the direction of the first preset axis;

[0016] The sliding component is provided with one side of the sliding groove relative to the fixed section, forming a sliding block embedded in the sliding groove.

[0017] Optionally, the oral retractor further comprises:

[0018] A guide shaft is fixedly arranged in the slide groove along the first preset axis direction; the slide block is provided with a guide hole which can be penetrated by the guide shaft along the first preset axis direction;

[0019] The resilient component is sleeved on the guide shaft; along the first preset axis direction, one end of the resilient component abuts against the inner wall of the slide groove, and the other end of the resilient component abuts against the slider.

[0020] Optionally, the movable section is an elastic telescopic component; along the first preset axis direction, the elastic telescopic component is connected to one side of 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 comprises:

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

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

[0024] The second connecting rod comprises: 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 toward the head, the first end and the second end respectively drive the two side parts to gradually move away from each other along the direction of the first preset axis;

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

[0027] Optionally, the oral retractor further comprises:

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

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

[0030] Wherein, the button cover 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 fixing section.

[0032] Optionally, the fixing 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 fixing section, and the head is provided with a threaded hole corresponding to the waist-shaped hole;

[0033] The oral retractor also includes:

[0034] A locking member, used to lock or loosen the head and the fixing section; the locking member comprises: 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 fixing section;

[0035] Wherein, when the locking member releases the head and the fixing section, the support arm can slide along the first preset axis direction, and the support arm can rotate around the axis direction of the stud.

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

[0037] Optionally, the oral traction device further comprises: a first clamp body and a second clamp body intersecting each other around a pivot axis, the first clamp body and the second clamp body being hinged to each other with the intersection as a pivot point;

[0038] Wherein, the first clamp body is detachably connected to the tail of the support arm of one of the oral traction devices, and the second clamp 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 retractor includes a lip guard and a support arm, and at the same time, the two ends of the lip guard along the first preset axis are respectively two side parts, and the two side parts can move relatively along the first preset axis, so that the lip guard can be extended or shortened, thereby changing the length of the lip guard. Therefore, in actual application, medical staff can change the length of the lip guard according to the length of the patient's upper lip and lower lip to ensure that the two lip guards can completely cover the upper lip or the lower lip respectively. When the lip guard is pulled by the support arm, the upper lip or the lower lip can be completely pulled apart, thereby effectively avoiding the upper lip partially fitting to the upper teeth, or the lower lip partially fitting to the lower teeth, so that the upper teeth and the lower teeth can be fully exposed to avoid obstruction, and therefore, the final imaging quality of the upper teeth and the lower teeth can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the implementation methods of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the prior art descriptions. Obviously, the drawings described below are only used to illustrate some implementation methods of the present application. For ordinary technicians in this field, without paying creative work, they can also obtain other technical features, connection relationships and even method steps not mentioned in the drawings based on these drawings.

[0041] Figure 1 It is a structural schematic diagram of an oral retractor according to a first embodiment of the present invention;

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

[0043] Figure 3 It is a schematic diagram of the case where two sliding components in the lip guard are stacked on the outer side surface of the fixed section in the first embodiment of the present invention;

[0044] Figure 4 for Figure 3 Sectional view at AA in the middle;

[0045] Figure 5 It is a schematic diagram of the case where two sliding components in the lip guard are stacked on the inner side surface of the fixed section in the first embodiment of the present invention;

[0046] Figure 6 for Figure 5 Sectional view at the middle BB;

[0047] Figure 7 It is a schematic diagram of the structure in which a resilient component is added to the lip guard in the first embodiment of the present invention;

[0048] Figure 8 It is a schematic structural diagram of the lip guard of the oral retractor in the second embodiment of the present invention when it is retracted;

[0049] Fig. 9 It is a schematic structural diagram of the lip guard in the oral retractor of the second embodiment of the present invention when it is unfolded;

[0050] Fig.10 It is a structural schematic diagram of an oral retractor according to a third embodiment of the present invention;

[0051] Fig.11 for Fig.10 A partial enlarged view of point C in the middle;

[0052] Fig.12 It is a schematic diagram of the assembly between the key cover, the key and the rack when the key cover is in the initial position in the third embodiment of the present invention;

[0053] Fig.13 It is a schematic diagram of the assembly between the button and the rack when the button cover is pressed to a preset position in the third embodiment of the present invention;

[0054] Fig.14 It is a structural schematic diagram of an oral retractor according to a fourth embodiment of the present invention;

[0055] Fig.15 It is a schematic cross-sectional view of the oral retractor according to the fourth embodiment of the present invention along the second preset axis direction;

[0056] Fig.16 It is a schematic structural diagram of an oral traction device according to a fifth embodiment of the present invention.

[0057] Description of Reference Numerals

[0058] 1-lip stopper; 11-side; 12-head end; 13-end; 14-fixed section; 141-inner side; 142-outer side; 143-slideway; 144-channel; 145-waist-shaped hole; 15-sliding part; 151-sliding block; 152-channel; 16-elastic telescopic part;

[0059] 2-support arm; 21-head; 22-tail; 23-slide;

[0060] 3-guide shaft;

[0061] 4- Spring;

[0062] 5-control keys; 51-upper surface

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

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

[0065] 8- rack;

[0066] 9-button cover; 91-clamping protrusion;

[0067] 10-locking member; 101-stud; 102-flange portion; 103-nut;

[0068] 20-first clamp body; 201-first ring body;

[0069] 30 - second clamp body; 301 - second ring body. DETAILED DESCRIPTION

[0070] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of this application.

[0071] In the prior art, when teeth need to be orthodontically treated, an oral retractor is often used, and the doctor uses the oral retractor to pull the patient's lips and cheeks apart to facilitate filming of the patient's mouth. During use, an oral retractor is generally needed in the process of pulling the patient's lips and cheeks apart, and two oral retractors are required to correspond to the patient's upper lip and two oral retractors are required to correspond to the patient's lower lip, and the patient's lips and cheeks are completely pulled apart by the oral retractor. 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 set toward the two ends close to the upper lip, or the two oral retractors on the lower lip are respectively set toward the two ends close to the lower lip. However, the inventors discovered that when the patient's lips and cheeks are pulled apart by two oral retractors, the two ends of the upper lip or the two ends of the lower lip will be affected by the pulling force of their own oral retractors respectively, resulting in the middle part of the upper lip and the middle part of the lower lip being unable to be affected by the pulling force of the retractors. At this time, although the teeth in the mouth can be fully exposed, the middle part of the upper lip and the middle part of the lower lip will respectively fit the upper incisors and the lower incisors, resulting in part of the upper teeth and part of the lower teeth being blocked by the upper lip and the upper lip respectively when the upper and lower dentitions are photographed, thereby affecting the final imaging effect.

[0072] Implementation Method 1

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

[0074] Secondly, if Figure 1 As shown, along the second preset axis direction, the support arm 2 has: a head 21, a tail 22 opposite to the head 21, and the head 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, if Figure 1 As shown, along the first preset axis direction, the two side portions 11 of the lip guard 1 are movable relative to each other, so that the lip guard 1 can be extended or shortened along the first preset axis direction.

[0076] It is not difficult to see from the above content that since the oral retractor includes a lip guard 1 and a support arm 2, and at the same time, the two ends of the lip guard 1 along the first preset axis direction are two side parts 11, and the two side parts 11 can move relatively along the first preset axis direction, so that the lip guard 1 can be extended or shortened, thereby changing the length of the lip guard 1. Therefore, in actual application, medical staff can change the length of the lip guard according to the length of the patient's upper lip and lower lip to ensure that the lip guard 1 can completely wrap the upper lip or lower lip. In the process of actual application, the lip guard 1 can be pulled by the support arm 2 so that the lip guard 1 can completely pull the upper lip or lower lip apart, thereby effectively avoiding the upper lip partially fitting on the upper teeth, or the lower lip partially fitting on the lower teeth, to ensure that the upper teeth or lower teeth can be fully exposed, thereby improving the final imaging quality of the upper teeth or lower teeth.

[0077] Specifically, in this embodiment, if Figure 2 and Figure 3 As shown, firstly, along the first preset axis direction, the lip guard 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. Secondly, Figure 4 and Figure 6 As shown, the fixed section 14 has: an inner side surface 141 that can be attached to 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 connecting 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, one side of at least one movable section away from the fixed section 14 is one of the side portions 11 of the lip guard 1. For example, when the movable section is provided with one, as Figure 2 As 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, Figure 3 As shown, in the present embodiment, two movable segments are provided, and the two movable segments are arranged opposite to each other along the first preset axis direction. Therefore, the side of any one of the movable segments away from the fixed segment 14 can be used as one of the side portions 11 of the lip stopper 1, and the side of the other movable segment away from the fixed segment 14 can be used as the other side portion 11 of the lip stopper 1, so that the two side portions 11 can also realize relative movement with each other along the first preset axis direction.

[0079] Furthermore, it should be noted that, in this embodiment, Figures 3 to 6 As shown, the movable section can be a sliding component 15, and the sliding component 15 can be overlapped on the outer side surface 142 or the inner side surface 141 of the fixed section 14, so that the sliding component 15 can slide relative to the fixed section 14. And, it is worth mentioning that when the sliding component 15 is overlapped on the outer side surface 142 of the fixed section 14, as shown in FIG. Figure 3 and Figure 4As shown, the outer side surface 142 of the fixing section 14 is provided with a sliding groove 143 along the first preset axis direction, and when the sliding component 15 is overlapped on the inner side surface 141 of the fixing section 14, as shown in FIG. Figure 5 and Figure 6 As shown, the inner side surface 141 of the fixed section 14 is provided with a slide groove 143 along the first preset axis direction. At the same time, the sliding component 15 is provided with a slider 151 embedded in the slide groove 143 on the side of the fixed section 14. It is not difficult to see that, through the cooperation between the slider 151 and the slide groove 143, the sliding component 15 can be guided when sliding along the first preset axis direction, thereby improving the sliding performance of the sliding component 15.

[0080] In addition, as a preferred solution, in order to make the sliding component 15 fit more closely with the fixing section 14, when the sliding component 15 is overlapped on the outer side surface 142 of the fixing section 14, as shown in FIG. Figure 4 As shown, the two ends of the sliding component 15 along the bending direction thereof are bent in directions opposite to each other. It is not difficult to see that along the bending direction of the entire lip guard 1, the two ends of the sliding component 15 respectively form channels 152 that can be embedded by the two ends of the fixed section 14, so that when the sliding component 15 slides along the first preset axis direction, it can also support the fixed section 14, thereby avoiding the phenomenon of separation between the sliding component 15 and the fixed section 14. When the sliding component 15 is overlapped on the inner side surface 141 of the fixed section 14, as shown in FIG. Figure 6 As shown, the two ends of the fixed section 14 along the bending direction thereof are bent in directions opposite to each other. It is not difficult to see that along the bending direction of the entire lip guard 1, the two ends of the fixed section 14 respectively form another channel 144 that can be embedded by the two ends of the sliding component 15, so that when the sliding component 15 slides along the first preset axis direction, the fixed section 14 can support the sliding component 15, thereby also avoiding the separation between the sliding component 15 and the fixed section 14.

[0081] In addition, it is worth mentioning that in order to facilitate the lip guard 1 to be able to adapt to upper lips or lower lips of different lengths, such as Figure 7 As shown, the oral retractor of this embodiment also includes: a guide shaft 3 and a rebound component. The guide shaft 3 is fixed in the slide groove 143 along the first preset axis direction, and in order to enable the slider 151 to slide normally in the slide groove 143, the slider 151 is provided with a guide hole (not shown in the figure) that can be penetrated by the guide shaft 3 along the first preset axis direction. Secondly, the rebound component can be a spring 4 in this embodiment, which is sleeved on the guide shaft 3, and through Figure 7It is not difficult to see that, along the first preset axis direction, one end of the spring 4 abuts against the inner wall of the slide groove 143, and the other end of the spring 4 abuts against the slider 151. It is not difficult to see that in actual application, the slider 151 can drive the sliding component 15 to slide in a direction away from the fixed section 14 under the rebound effect of the spring 4, so that the side portion 11 of the sliding component 15 can automatically fit the edge of the two ends of the oral cavity, thereby wrapping the entire upper lip or lower lip to achieve the purpose of rapid self-adaptation.

[0082] Furthermore, it should be noted that, in this embodiment, the sliding component 15 can be a hard component or a flexible component. When the sliding component 15 is a hard component, the sliding component 15 can be, for example, a plastic component, a metal component, etc., and when the sliding component 15 is a flexible component, the sliding component 15 can be, for example, a rubber component, a silicone component, or other colloid component. In this embodiment, the type of the sliding component 15 is not specifically limited.

[0083] Implementation Method 2

[0084] The second embodiment of the present invention relates to an oral retractor. The second embodiment is substantially the same as the first embodiment, with the main difference being that in the first embodiment, the movable section is a sliding member 15, while in the present embodiment, Figure 8 and Fig. 9 As shown, the movable section can also be an elastic telescopic component 16. And, when there is one elastic telescopic component 16, the elastic telescopic component 16 is connected to one side of the fixed section 14 along the first preset axis direction. When there are two elastic telescopic components 16, as shown in FIG. Figure 8 and Fig. 9 As shown, along the first preset axis direction, one of the elastic telescopic components 16 is connected to one side of the fixed section 14 , while the other elastic telescopic component 16 is connected to the other side of the fixed section 14 .

[0085] It is not difficult to see from the above content that, through the resilience of the elastic telescopic component 16 itself, the two side portions 11 can also adaptively fit tightly to the edge portions at both ends of the oral cavity, thereby ensuring that the lip guard 1 can completely wrap the upper lip or the lower lip, so that the upper lip or the lower lip can be completely pulled apart.

[0086] Specifically, in this embodiment, the elastic telescopic component 16 can be a hard component such as an elastic telescopic rod, or a flexible component such as a silicone or rubber lamp with a rebound property. In addition, in this embodiment, as a preferred solution, the elastic telescopic component 16 and the fixed section 14 can be detachably connected, such as a snap connection or a bolt connection. Thus, medical staff can use different types of elastic telescopic components 16 according to actual needs.

[0087] Implementation Method 3

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

[0089] Among them, Fig.10 and Fig.11 As shown, the control key 5 is slidably disposed in the slideway 23 along the second preset axis direction. In addition, the first connecting rod 6 and the second connecting rod 7 are respectively disposed on both sides of the control key 5. Fig.10 and Fig.11 As shown, the first connecting rod 6 has: a first end 61 rotatably connected to one of the side portions 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 portion 11, and a second root 72 rotatably connected to the control key 5.

[0090] It is not difficult to see 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, 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 practical application, the lip guard 1 of the oral retractor of this embodiment is described by taking the two movable sections as two sliding parts 15 as an example. When the control key 5 slides along the slideway 23 and toward 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 parts 15 to slide linearly in the direction of moving away from each other. When the control key 5 slides along the slideway 23 and toward 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 drive the two side parts 11 to gradually move closer to each other along the first preset axis direction, that is, drive the two sliding parts 15 to slide linearly in the direction of moving closer to each other. It can be seen from the above content that in actual application, medical staff can easily control the relative sliding of the two sliding components 15 by sliding the control key 5, so as to facilitate the medical staff to adjust the length of the lip guard 1.

[0091] When the two movable sections of the lip guard 1 are two elastic telescopic components 16, the first connecting rod 6 and the second connecting rod 7 will respectively drive the two elastic telescopic components 16 to perform telescopic movement along the first preset axis direction under the sliding action of the control key 5, so as to achieve the purpose of adjusting the relative positions of the two side portions 11 with each other.

[0092] In addition, as a preferred solution, in order to fix the relative positions of the two movable segments after the lip guard 1 completely wraps the upper lip or the lower lip, it is prevented that the edges of the two ends of the oral cavity are torn due to excessive rebound force. Figures 10 to 13 As shown, the oral retractor of this embodiment further includes: a rack 8 and a button cover 9.

[0093] Among them, Fig.11 , Fig.12 and Fig.13 As shown, the rack 8 is arranged in the slideway 23 along the second preset axis direction, and the key cover 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, the key cover 9 has a clamping protrusion 91 that can be clamped between any two adjacent teeth of the rack 8 on one side relative to the rack 8. Specifically, the movable section is described as a sliding component 15. In actual application, when the key cover 9 is pressed to the preset position, as shown in FIG. Fig.13 As shown, the engaging protrusion 91 of the key cover 9 can be disengaged from any two adjacent teeth of the rack 8, so that the control key 5 can slide normally along the second preset axis direction, and the adjustment of the sliding component 15 can be achieved. When the key cover 9 rebounds to the initial position, as shown in FIG. Fig.11 and Fig.12 As shown, at this time, the snap-in protrusion 91 on the key cover 9 can be directly inserted 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 cover 9 to ensure that the sliding part 15 will not continue to apply force to the two end edges of the oral cavity under the rebound action of the spring 4, thereby avoiding the edge parts at both ends of the oral cavity from being torn.

[0094] Implementation Method 4

[0095] The fourth embodiment of the present invention relates to an oral retractor. The fourth embodiment is a further improvement on the extrusion of the first, second and third embodiments. The main improvement is that: Fig.14 and Fig.15 As shown, in this embodiment, the head 21 of the support arm 2 is detachably connected to the fixing section 14, so that the support arm 2 can be adapted to lip guards 1 of different sizes to satisfy more patient groups.

[0096] Specifically, in this embodiment, if Fig.14 As shown, the fixing section 14 has a waist-shaped hole 145 along the first preset axis direction, the head 21 of the support arm 2 is disposed on the inner side of the fixing section 14, and the head 21 of the support arm 2 has a threaded hole (not shown) corresponding to the waist-shaped hole 145. Fig.14 and Fig.15As shown, the oral retractor of this embodiment further includes: a locking member 10. Moreover, the locking member 10 can be used to lock or release the head 21 of the support arm 2 and the fixing section 14 of the lip guard 1.

[0097] Furthermore, it is worth mentioning that in order to enable the locking member 10 to achieve locking and fixing between the head 21 of the support arm 21 and the fixing section 14, in this embodiment, Fig.15 As shown, the locking member 10 includes: a stud 101, a flange portion 102 coaxially arranged with the stud 101, and a nut 103 screwed with the stud 101. In the actual assembly process, 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, and the flange portion 102 can directly abut against the inner side surface 141 of the fixing section 14, and the nut 103 can directly abut against the outer side surface 142 of the fixing section 14, so that the head 21 of the support arm 2 and the fixing section 14 can be locked and fixed.

[0098] And, through Fig.15 It is not difficult to see that, after the locking member 10 releases the head 21 of the support arm 2 from the fixed section 14 of the lip stop 1, the support arm 2 can also slide linearly along the waist-shaped hole 145, that is, the support arm 2 as a whole can slide along the first preset axis direction, and at the same time, the support arm 2 can also rotate around the axis direction of the stud 101 of the locking member 10, so that the support arm 2 can be adjusted on the lip stop 1. In actual application, medical staff can fine-tune the position of the support arm 2 according to shooting requirements, so that the upper lip or the lower lip can be pulled apart more easily.

[0099] In addition, as a preferred solution, in this embodiment, Fig.14 and Fig.15 As 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 is a bent section, it can also fit well against the patient's upper lip or lower lip, so that the patient will not feel discomfort when the upper lip and lower lip are pulled apart, thereby improving the patient's comfort.

[0100] Implementation Method 5

[0101] A fifth embodiment of the present invention relates to an oral traction device, such as Fig.16 As shown, the oral retractor comprises: two oral retractors as described in any one of the first to fourth embodiments, and the lip stopper 1 of one oral retractor is used to wrap the upper lip, and the lip stopper 1 of the other oral retractor is used to wrap the lower lip.

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

[0103] In addition, as a preferred solution, Fig.16 As shown, the oral traction device of this embodiment further includes: a first clamp body 20 and a second clamp body 30 intersecting each other around a pivot axis, wherein the first clamp body 20 and the second clamp body 30 are hinged to each other with the intersection as a pivot point. Fig.16 As shown, the first clamp body 20 is detachably connected to the tail 22 of the support arm 2 of one of the oral traction devices, and the second clamp body 30 is detachably connected to the tail 22 of the support arm 2 of the other oral traction device. It is not difficult to see that in actual application, by pivoting the first clamp body 20 and the second clamp body 30 with each other, the two oral traction devices can be driven to pull the upper lip and the lower lip respectively at the same time, so that the oral traction device of this embodiment can be controlled by one hand.

[0104] Furthermore, it is worth mentioning that, in order to further facilitate the manipulation of the oral traction device, e.g. Fig.16 As shown, the end of the first clamp body 20 away from one of the support arms 2 forms a first ring body 201, and the end of the second clamp body 30 away from the other support arm 2 forms a second ring body 301. The first ring body 201 and the second ring body 301 can further facilitate the control of the oral traction device.

[0105] Finally, it should be noted that those skilled in the art can understand that in order to enable readers to better understand the present application, the embodiments of the present application provide many technical details. However, even without these technical details and various changes and modifications based on the above-mentioned embodiments, the technical solutions claimed for protection by the claims of the present application can be basically realized. Therefore, in practical applications, various changes can be made to the above-mentioned embodiments in form and detail without departing from the spirit and scope of the present application.

Claims

1. An oral retractor, characterized in that: include: Lip stop; Along the first preset axis direction, the lip guard has: two side portions opposite to each other, a head end and a tail end connecting the two side portions, and the lip guard as a whole is bent and extended from the head end to the tail end to form a hook-shaped structure that can wrap the upper lip or the lower lip; 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, the head portion is also connected to the lip stopper, and the second preset axis direction is perpendicular to the first preset axis direction; Wherein, along the direction of the first preset axis, the two side portions can move relative to each other, so that the lip guard can be extended or shortened.

2. The oral retractor according to claim 1, characterized in that: Along the first preset axis direction, the lip guard includes: a fixed section, at least one movable section connected to the fixed section, and the head of the support arm is connected to the fixed section; Wherein, along the direction of the second preset axis, a side of at least one of the movable segments away from the fixed segment is one of the side portions of the lip stop.

3. The oral retractor according to claim 2, characterized in that: There are two movable sections, which are arranged opposite to each other along the first preset axis direction; Wherein, a side of any one of the movable sections away from the fixed section is one of the side portions of the lip stopper, and a side of another movable section away from the fixed section is the other side portion of the lip stopper.

4. The oral retractor according to claim 2 or 3, characterized in that: The fixing section comprises: an inner side surface which can be attached to the upper lip or the lower lip, and an outer side surface which is opposite to the inner side surface, and the head of the connecting arm is connected to the inner side surface of the fixing section.

5. The oral retractor according to claim 4, characterized in that: The movable section is a sliding component, the sliding component is stacked on the outer side surface or the inner side surface of the fixed section, and the sliding component is slidable relative to the fixed section.

6. The oral retractor according to claim 5, characterized in that: When the sliding component is overlapped on the outer side surface of the fixed section, a sliding groove is provided on the outer side surface of the fixed section along the direction of the first preset axis; When the sliding component is overlapped on the inner side surface of the fixed section, a sliding groove is provided on the inner side surface of the fixed section along the direction of the first preset axis; The sliding component is provided with one side of the sliding groove relative to the fixed section, forming a sliding block embedded in the sliding groove.

7. The oral retractor according to claim 6, characterized in that: The oral retractor also includes: A guide shaft is fixedly arranged in the slide groove along the first preset axis direction; the slide block is provided with a guide hole which can be penetrated by the guide shaft along the first preset axis direction; The resilient component is sleeved on the guide shaft; along the first preset axis direction, one end of the resilient component abuts against the inner wall of the slide groove, and the other end of the resilient component abuts against the slider.

8. The oral retractor according to claim 4, characterized in that: The movable section is an elastic telescopic component; along the first preset axis direction, the elastic telescopic component is connected to one side of the fixed section.

9. The oral retractor according to claim 1, characterized in that: The support arm is provided with a slideway along the second preset axis direction, and the oral traction device further comprises: A control key is slidably disposed on the slideway along the second preset axis direction; A first connecting rod; the first connecting rod comprises: a first end portion rotatably connected to one of the side portions, and a first root portion rotatably connected to the control key; The second connecting rod comprises: 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 toward the head, the first end and the second end respectively drive the two side parts to gradually move away from each other along the direction of the first preset axis; When the control key slides along the slideway toward the tail portion, the first end portion and the second end portion respectively drive the two side portions to gradually approach each other along the direction of the first preset axis.

10. The oral retractor according to claim 9, characterized in that: The oral retractor also includes: a rack, arranged in the slideway along the second preset axis direction; A key cover is sleeved on the control key and elastically connected to the control key; the key cover has a clamping protrusion on one side relative to the rack that can be clamped between any two adjacent teeth of the rack; Wherein, when the button cover is pressed to a preset position, the engaging protrusion is disengaged from between any two adjacent teeth of the rack.

11. The oral retractor according to claim 4, characterized in that: The head of the support arm is detachably connected to the fixing section.

12. The oral retractor according to claim 11, characterized in that: The fixing 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 fixing section, and the head is provided with a threaded hole corresponding to the waist-shaped hole; The oral retractor also includes: A locking member, used to lock or loosen the head and the fixing section; the locking member comprises: 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 fixing section; Wherein, when the locking member releases the head and the fixing section, the support arm can slide along the first preset axis direction, and the support arm can rotate around the axis direction of the stud.

13. The oral retractor according to claim 12, characterized in that: The head is a bent section that fits the inner side surface of the fixing section.

14. An oral traction device, characterized in that: include: Two oral retractors according to any one of claims 1 to 11, wherein the lip stopper of one oral retractor is used to wrap the upper lip, and the lip stopper of the other oral retractor is used to wrap the lower lip.

15. The oral traction device according to claim 14, characterized in that: The oral traction device further comprises: a first clamp body and a second clamp body intersecting each other around a pivot axis, wherein the first clamp body and the second clamp body are hinged to each other with the intersection as a pivot point; Wherein, the first clamp body is detachably connected to the tail of the support arm of one of the oral traction devices, and the second clamp body is detachably connected to the tail of the support arm of the other oral traction device.

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