阅读说明：本技术 一种口腔科用儿童专用口腔撑开装置 (Special oral cavity distraction device of children for department of stomatology ) 是由 王秀优 张扬根 李磊涛 张丹 赵芳 龙霖 于 2021-09-30 设计创作，主要内容包括：本发明提出了一种口腔科用儿童专用口腔撑开装置,本发明涉及医疗器械技术领域。本发明的方案：一种口腔科用儿童专用口腔撑开装置,包括口腔撑开组件和用于控制口腔撑开组件的控制组件；口腔撑开组件包括第一连接件,第一连接件的两端均转动连接有第一撑开件；控制组件包括撑开杆,撑开杆贯穿第一连接件,撑开杆与第一连接件螺纹配合,撑开杆的一端转动连接有第二连接件,第二连接件的两端均连接有第二撑开件,第二撑开件远离第二连接件的一端与第一撑开件滑动连接。本发明能够将患者口腔撑开后撤销对撑开装置施加的力,不仅省力而且方便对患者口腔进行检查。(The invention provides a special oral cavity distraction device for children in stomatology department, and relates to the technical field of medical instruments. The scheme of the invention is as follows: a special oral cavity opening device for children in stomatology department comprises an oral cavity opening component and a control component for controlling the oral cavity opening component; the oral cavity opening component comprises a first connecting piece, and two ends of the first connecting piece are rotatably connected with first opening pieces; the control assembly comprises an opening rod, the opening rod penetrates through the first connecting piece, the opening rod is in threaded fit with the first connecting piece, one end of the opening rod is rotatably connected with the second connecting piece, the two ends of the second connecting piece are both connected with the second opening piece, and one end, far away from the second connecting piece, of the second opening piece is connected with the first opening piece in a sliding mode. The invention can cancel the force applied to the distraction device after the oral cavity of the patient is distracted, thereby saving labor and being convenient for examining the oral cavity of the patient.)

1. The special oral cavity opening device for children in the department of stomatology is characterized by comprising an oral cavity opening component and a control component for controlling the oral cavity opening component;

the oral cavity opening component comprises a first connecting piece, and two ends of the first connecting piece are rotatably connected with first opening pieces;

the control assembly comprises an opening rod, the opening rod penetrates through the first connecting piece, the opening rod is in threaded fit with the first connecting piece, one end of the opening rod is connected with the second connecting piece in a rotating mode, the two ends of the second connecting piece are connected with the second opening piece, and the second opening piece is far away from one end of the second connecting piece and is in sliding connection with the first opening piece.

2. The children's oral cavity distractor device of claim 1, wherein the first link member is hinged at both ends to the first distractor member.

3. The special oral cavity opening device for children in department of stomatology according to claim 1, wherein both ends of the second connecting piece are provided with mounting grooves, one end of the second opening piece is located in the mounting groove, and the second opening piece and the second connecting piece are fixed through bolts.

4. The children's special oral cavity opening device for stomatology department according to claim 1, wherein the second connecting piece is inlaid with a bearing, the outer layer of the bearing is connected with the second connecting piece, and the inner layer of the bearing is connected with the opening rod.

5. The children's special oral cavity distracting device for stomatology department according to claim 1, wherein one side of the first distracting piece is provided with a sliding groove along the length direction, and one end of the second distracting piece is provided with a sliding block matched with the sliding groove.

6. The special oral cavity opening device for children in department of stomatology according to claim 1, wherein the opening rod comprises a first connecting section and a second connecting section, the first connecting section is hollow, one end of the second connecting section is located in the first connecting section, the first connecting section is in threaded fit with the second connecting section, the other end of the second connecting section is rotatably connected with the second connecting piece, and the outer side wall of the first connecting section is provided with threads matched with the first connecting piece.

7. The children's special oral cavity distracting device of claim 1, wherein a rubber sleeve is sleeved on an end of the first distracting piece far away from the first connecting piece.

8. The children's oral cavity distracting device of claim 1, wherein a hand-held member is detachably connected to an end of the distracting rod remote from the second connecting member.

9. The oral cavity distractor device of claim 8 wherein said second coupling member is threadably engaged with said hand grip member.

10. The children's specialized oral cavity distractor device of claim 1, wherein the first distractor is provided with a transition arc.

Technical Field

The invention relates to the technical field of medical instruments, in particular to a special oral cavity opening device for children in stomatology department.

Background

In the medical activity of department of stomatology, can touch the condition that needs inspect children's patient's oral cavity usually to often need use distraction device to support children's oral cavity, make things convenient for medical personnel to inspect, avoid influencing conventional inspection treatment.

At present, the distraction device on the market has a single structure, and when the medical staff uses the distraction device to distract the oral cavity of a patient, the medical staff always applies force to the distraction device, and the long-time work can cause the arm of the medical staff to be sore and influence the oral cavity examination.

Disclosure of Invention

The invention aims to provide a children special oral cavity distraction device for stomatology department, which can be used for distracting the oral cavity of a patient and then removing the force applied to the distraction device, thereby saving labor and being convenient for examining the oral cavity of the patient.

The embodiment of the invention is realized by the following steps:

the embodiment of the application provides a special oral cavity opening device for children in stomatology department, which comprises an oral cavity opening component and a control component for controlling the oral cavity opening component; the oral cavity opening component comprises a first connecting piece, and two ends of the first connecting piece are rotatably connected with first opening pieces; the control assembly comprises an opening rod, the opening rod penetrates through the first connecting piece, the opening rod is in threaded fit with the first connecting piece, one end of the opening rod is rotatably connected with the second connecting piece, the two ends of the second connecting piece are both connected with the second opening piece, and one end, far away from the second connecting piece, of the second opening piece is connected with the first opening piece in a sliding mode.

In some embodiments of the present invention, both ends of the first connecting member are hinged to the first opening member.

In some embodiments of the present invention, two ends of the second connecting member are respectively provided with a mounting groove, one end of the second spreading member is located in the mounting groove, and the second spreading member and the second connecting member are fixed by a bolt.

In some embodiments of the present invention, the second connecting member is embedded with a bearing, an outer layer of the bearing is connected with the second connecting member, and an inner layer of the bearing is connected with the opening rod.

In some embodiments of the present invention, a sliding groove is formed on one side of the first spreading member along the length direction, and a sliding block engaged with the sliding groove is formed on one end of the second spreading member.

In some embodiments of the present invention, the opening rod includes a first connecting section and a second connecting section, the first connecting section is hollow, one end of the second connecting section is located in the first connecting section, the first connecting section is in threaded fit with the second connecting section, the other end of the second connecting section is rotatably connected to the second connecting member, and the outer side wall of the first connecting section is provided with a thread that is in threaded fit with the first connecting member.

In some embodiments of the present invention, a rubber sleeve is sleeved on an end of the first spreading member away from the first connecting member.

In some embodiments of the present invention, a hand-held device is detachably connected to an end of the opening bar remote from the second connecting device.

In some embodiments of the invention, the second connector is threadably engaged with the hand grip.

In some embodiments of the invention, the first spreader component is provided with a transition arc.

Compared with the prior art, the embodiment of the invention has at least the following advantages or beneficial effects:

a special oral cavity opening device for children in stomatology department comprises an oral cavity opening component and a control component for controlling the oral cavity opening component; the oral cavity opening component comprises a first connecting piece, and two ends of the first connecting piece are rotatably connected with first opening pieces; the control assembly comprises an opening rod, the opening rod penetrates through the first connecting piece, the opening rod is in threaded fit with the first connecting piece, one end of the opening rod is rotatably connected with the second connecting piece, the two ends of the second connecting piece are both connected with the second opening piece, and one end, far away from the second connecting piece, of the second opening piece is connected with the first opening piece in a sliding mode.

In the above embodiment, an oral cavity distracting device for children in department of stomatology comprises an oral cavity distracting assembly and a control assembly, wherein the oral cavity distracting assembly comprises a first connecting piece and a first distracting piece, both ends of the first connecting piece are rotatably connected with the first distracting piece (one end of the first distracting piece is rotatably connected with the first connecting piece, and the other end of the first distracting piece is used for distracting the oral cavity of the children in department of stomatology), the control assembly comprises an distracting rod, a second connecting piece and a second distracting piece, wherein the distracting rod penetrates through the first connecting piece, the distracting rod is in threaded fit with the first connecting piece (the distracting rod can move up and down when the distracting rod and the first connecting piece rotate relatively), one end of the distracting rod is rotatably connected with the second connecting piece (the second connecting piece is located at one side of the first distracting piece), both ends of the second connecting piece are connected with one end of the second distracting piece, the other end of the second spreading member is slidably connected with the first spreading member (the sliding direction of one end of the second spreading member is the length direction of the first spreading member), specifically, when a medical worker inspects the oral cavity of a child, the oral cavity of the child needs to be spread, so that the condition in the oral cavity of the child can be conveniently observed, firstly, the medical worker enables the first connecting member and the spreading rod to rotate relatively, the second connecting member at one end of the spreading rod moves towards the first connecting member, the second spreading members at two ends of the second connecting member slide with the first spreading member, when the second connecting member slides to be in contact with the first connecting member, the first spreading members at two ends of the first connecting member are in a closed state (one end of the first spreading member, which is far away from the first connecting member, is in contact with each other, at the moment, the spreading degree is the minimum state), then, the medical worker places the two first spreading members which are arranged relatively in the oral cavity of the child needing to be inspected, then the first connecting piece and the opening rod rotate relatively, the opening rod drives the second connecting piece to move away from the first connecting piece, the second opening pieces at the two ends of the second connecting piece slide with the first opening pieces, and the first opening pieces slowly rotate relative to the first connecting pieces, the two oppositely arranged first opening pieces slowly open in the mouth of the child, the medical staff makes the opening rods and the first connecting pieces rotate relatively, the second connecting piece can be rotated to be away from the first connecting piece slowly, the second opening pieces at two ends of the second connecting piece are rotated to open the first opening pieces slowly, even the degree that the one end opening of two relative first opening pieces that set up strutted is big more greatly, medical personnel can slowly strut its children's oral cavity according to the condition in children's oral cavity, avoided once only strutting children's oral cavity fast, lead to the uncomfortable or children's oral cavity injured's condition of children.

In the embodiment, when a medical worker inspects the oral cavity of a child, one ends of two oppositely arranged first spreading parts are placed in the oral cavity of the child, then the spreading rods and the first connecting parts are relatively rotated to enable the spreading rods to slowly move, the spreading rods drive the second connecting parts to move away from the first connecting parts, the second spreading parts at two ends of the second connecting parts both slowly spread the first spreading parts, openings at one ends of the two oppositely arranged first spreading parts are slowly enlarged to slowly spread the oral cavity of the child, and on the one hand, the medical worker can slowly spread the oral cavity of the child according to the condition of the oral cavity of the child, so that the condition that the oral cavity of the child is quickly spread at one time to cause discomfort or injury of the oral cavity of the child is avoided; second aspect, medical personnel adjust children oral cavity's the degree of strutting after, can cancel the power of applying force at the distraction rod, then attentively inspect children's oral cavity (the distraction condition that children's oral cavity just can be adjusted to distraction rod and first connecting piece relative rotation, medical personnel no longer rotate the distraction rod and first connecting piece relative after adjusting the degree of strutting in children's oral cavity, when having avoided medical personnel to make oral cavity pliers make patient's oral cavity strut among the prior art, medical personnel need exert force on oral cavity pliers always just can keep patient's oral cavity distraction degree, long-time work can lead to medical personnel's arm ache to influence the operation, and medical personnel's arm exerts inconvenient medical personnel on to oral cavity pliers always and inspects patient's oral cavity.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is a schematic structural view of a children-dedicated oral cavity distracting device for stomatology department according to an embodiment of the present invention;

fig. 2 is a schematic structural view of an opening bar according to an embodiment of the present invention.

The following are marked in the figure: 1-a first connecting piece, 2-a first strutting piece, 3-a strutting rod, 4-a second connecting piece, 5-a second strutting piece, 6-a rubber sleeve, 7-a hand-held piece, 8-a first connecting section and 9-a second connecting section.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the embodiments of the present invention, it should be noted that, if the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention are usually placed in when used, the orientations or positional relationships are only used for convenience of describing the present invention and simplifying the description, but the terms do not indicate or imply that the devices or elements indicated must have specific orientations, be constructed in specific orientations, and operate, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical", "overhang" and the like do not require that the components be absolutely horizontal or overhang, but may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the embodiments of the present invention, it should be further noted that unless otherwise explicitly stated or limited, the terms "disposed," "mounted," "connected," and "connected" should be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Examples

Please refer to fig. 1-2. The embodiment provides a special oral cavity distraction device for children in stomatology department, which comprises an oral cavity distraction component and a control component for controlling the oral cavity distraction component; the oral cavity opening component comprises a first connecting piece 1, and two ends of the first connecting piece 1 are rotatably connected with first opening pieces 2; the control assembly comprises an opening rod 3, the opening rod 3 penetrates through a first connecting piece 1, the opening rod 3 is in threaded fit with the first connecting piece 1, one end of the opening rod 3 is rotatably connected with a second connecting piece 4, two ends of the second connecting piece 4 are both connected with second opening pieces 5, and the second opening pieces 5 are far away from one end of the second connecting piece 4 and are in sliding connection with the first opening pieces 2.

In the above embodiment, an oral cavity distracting device special for children in stomatology department comprises an oral cavity distracting component and a control component, wherein the oral cavity distracting component comprises a first connecting piece 1 and a first distracting piece 2, two ends of the first connecting piece 1 are rotatably connected with the first distracting piece 2 (one end of the first distracting piece 2 is rotatably connected with the first connecting piece 1, the other end of the first distracting piece 2 is used for distracting the oral cavity of children in the stomatology department), the control component comprises an distracting rod 3, a second connecting piece 4 and a second distracting piece 5, wherein the distracting rod 3 penetrates through the first connecting piece 1, the distracting rod 3 is in threaded fit with the first connecting piece 1 (the distracting rod 3 can move up and down when rotating relative to the first connecting piece 1), one end of the distracting rod 3 is rotatably connected with the second connecting piece 4 (the second connecting piece 4 is positioned at one side of the first distracting piece 2), the two ends of the second connecting piece 4 are connected with one end of the second spreading piece 5, the other end of the second spreading piece 5 is connected with the first spreading piece 2 in a sliding way (the sliding direction of one end of the second spreading piece 5 is the length direction of the first spreading piece 2), concretely, when a medical worker inspects the oral cavity of a child, the oral cavity of the child needs to be spread, the condition in the oral cavity of the child is convenient to observe, firstly, the medical worker enables the first connecting piece 1 and the spreading rod 3 to rotate relatively, the second connecting piece 4 at one end of the spreading rod 3 moves towards the first connecting piece 1, the second spreading pieces 5 at two ends of the second connecting piece 4 are all in a sliding way with the first spreading piece 2, when the second connecting piece 4 slides to be in contact with the first connecting piece 1, the first spreading pieces 2 at two ends of the first connecting piece 1 are in a closed state (when the first spreading piece 2 is far away from the first connecting piece 1, the state with the minimum spreading degree is achieved at the moment), the medical staff places the two oppositely arranged first strutting pieces 2 in the mouth cavity of the child to be checked, then the first connecting piece 1 and the strutting rod 3 rotate relatively, the strutting rod 3 drives the second connecting piece 4 to move away from the first connecting piece 1, the second strutting pieces 5 at two ends of the second connecting piece 4 slide with the first strutting pieces 2, and the first strutting pieces 2 slowly rotate relative to the first connecting piece 1, the two oppositely arranged first strutting pieces 2 slowly strut in the mouth cavity of the child, the medical staff makes the strutting rod 3 and the first connecting piece 1 rotate relatively, the second connecting piece 4 can be rotated to slowly keep away from the first connecting piece 1, the second strutting pieces 5 at two ends of the second connecting piece 4 are slowly strut the first strutting pieces 2, even if the opening at one end of the two oppositely arranged first strutting pieces 2 is bigger, the medical staff can slowly strut the mouth cavity of the child according to the condition of the mouth cavity of the child, the condition that children are uncomfortable or the oral cavity of the children is injured due to the fact that the oral cavity of the children is rapidly propped open at one time is avoided.

In the embodiment, when a medical worker inspects the oral cavity of a child, one end of each of two oppositely arranged first spreading parts 2 is placed in the oral cavity of the child, then the spreading rods 3 and the first connecting parts 1 are rotated relatively to enable the spreading rods 3 to move slowly, the spreading rods 3 drive the second connecting parts 4 to move away from the first connecting parts 1, the second spreading parts 5 at the two ends of each second connecting part slowly spread the first spreading parts 2, openings at one ends of the two oppositely arranged first spreading parts 2 are gradually enlarged to slowly spread the oral cavity of the child, and on the one hand, the medical worker can slowly spread the oral cavity of the child according to the condition of the oral cavity of the child, so that the condition that the oral cavity of the child is uncomfortable or injured due to the fact that the oral cavity of the child is quickly spread at one time is avoided; second aspect, medical personnel adjust children oral cavity prop open the degree after, can cancel the power of applying at the pole of strutting 3, then concentrate on examining children's oral cavity (prop open the pole 3 and rotate the condition of strutting that just can adjust children's oral cavity with first connecting piece 1 relatively, medical personnel no longer rotate relatively after adjusting the degree of strutting in children's oral cavity and prop open pole 3 and first connecting piece 1), when having avoided medical personnel to make oral cavity pliers make patient's oral cavity prop open among the prior art, medical personnel need exert force on oral cavity pliers always and just can keep patient's oral cavity to prop open the degree, long-time work can lead to medical personnel's arm ache to influence the operation, and medical personnel's arm exerts force inconvenient medical personnel on oral cavity pliers always and inspects patient's oral cavity.

In some embodiments of the invention, both ends of the first connecting member 1 are hinged with the first spreader 2.

In this embodiment, both ends of the first connecting member 1 are hinged to the first opening member 2, one end of the first opening member 2 can rotate relative to the first connecting member 1, and the other end of the first opening member 2 is used for opening the mouth of the child.

In some embodiments of the present invention, both ends of the second connecting member 4 are provided with mounting grooves, one end of the second spreader 5 is located in the mounting grooves, and the second spreader 5 and the second connecting member 4 are fixed by bolts.

In this embodiment, the second strutting piece 5 passes through the bolt fastening with second connecting piece 4, easy to assemble and dismantlement, the later maintenance of being convenient for.

In some embodiments of the invention, the second connecting member 4 is embedded with a bearing, an outer layer of the bearing is connected with the second connecting member 4, and an inner layer of the bearing is connected with the spreader bar 3.

In this embodiment, the outer layer of the bearing is embedded in the second connecting piece 4, the inner layer of the bearing is in interference connection with the opening rod 3, and the opening rod 3 is rotatably connected with the second connecting piece 4.

In some embodiments of the present invention, one side of the first spreader 2 is provided with a sliding groove along the length direction, and one end of the second spreader 5 is provided with a sliding block matched with the sliding groove.

In this embodiment, the sliding block of the second spreader 5 is engaged with the sliding groove of the first spreader 2, and the second spreader 5 can slide relative to the first spreader 2.

In some embodiments of the present invention, the opening rod 3 includes a first connection section 8 and a second connection section 9, the first connection section 8 is hollow, one end of the second connection section 9 is located in the first connection section 8, the first connection section 8 is in threaded fit with the second connection section 9, the other end of the second connection section 9 is rotatably connected with the second connection member 4, and the outer side wall of the first connection section 8 is provided with threads matched with the first connection member 1.

In this embodiment, the opening rod 3 is composed of a first connection section 8 and a second connection section 9, one end of the second connection section 9 is located in the first connection section 8, the first connection section 8 and the second connection section 9 can be relatively close to or relatively far away from each other after relatively rotating, the other end of the second connection section 9 is rotatably connected with the second connection member 4, the outer side wall of the first connection section 8 is provided with a thread matched with the first connection member 1, specifically, medical staff can relatively rotate the first connection section 8 and the first connection member 1 to open the oral cavity of a patient, the medical staff can relatively rotate the first connection section 8 and the second connection section 9 to enable the second connection section 9 to leak out of two thirds of the first connection section 8, because the inner diameter of the second connection section 9 is smaller than that of the first connection section 8, the inner diameter of a port of the first connection section 8 penetrating through the first connection member 1 is larger than that of the second connection section 9, medical personnel cooperate second linkage segment 9 with above-mentioned opening, and medical personnel only need promote second linkage segment 9 and just can realize strutting the work to patient's oral cavity, have increased moreover and strut efficiency, make patient's oral cavity can be strutted in the twinkling of an eye.

In some embodiments of the present invention, a rubber sleeve 6 is sleeved on an end of the first spreader 2 away from the first connector 1.

In this embodiment, one pot head of first piece 2 of strutting is equipped with rubber sleeve 6, and rubber sleeve 6 struts patient's oral cavity and can avoid patient's oral cavity to be scratched.

In some embodiments of the invention, a hand grip 7 is removably attached to the end of spreader lever 3 remote from second connector 4.

In this embodiment, the medical care personnel can rotate the opening rod 3 conveniently by holding the component 7 with the hand.

In some embodiments of the invention, the second connector 4 is threadably engaged with the hand grip 7.

In this embodiment, the second connecting member 4 and the hand-held member 7 are in threaded fit, so that the installation and the disassembly are convenient, and the subsequent maintenance is convenient.

In some embodiments of the invention, the first spreader 2 is provided with a transition arc.

In this embodiment, first piece 2 that struts is used for strutting children's oral cavity, and first piece 2 that struts sets up the transition circular arc and can avoid children oral cavity injury.

In summary, the embodiment of the present invention provides an oral cavity distracting device for children in stomatology department, comprising an oral cavity distracting component and a control component for controlling the oral cavity distracting component; the oral cavity opening component comprises a first connecting piece 1, and two ends of the first connecting piece 1 are rotatably connected with first opening pieces 2; the control assembly comprises an opening rod 3, the opening rod 3 penetrates through a first connecting piece 1, the opening rod 3 is in threaded fit with the first connecting piece 1, one end of the opening rod 3 is rotatably connected with a second connecting piece 4, two ends of the second connecting piece 4 are both connected with second opening pieces 5, and the second opening pieces 5 are far away from one end of the second connecting piece 4 and are in sliding connection with the first opening pieces 2.

In the above embodiment, an oral cavity distracting device special for children in stomatology department comprises an oral cavity distracting component and a control component, wherein the oral cavity distracting component comprises a first connecting piece 1 and a first distracting piece 2, two ends of the first connecting piece 1 are rotatably connected with the first distracting piece 2 (one end of the first distracting piece 2 is rotatably connected with the first connecting piece 1, the other end of the first distracting piece 2 is used for distracting the oral cavity of children in the stomatology department), the control component comprises an distracting rod 3, a second connecting piece 4 and a second distracting piece 5, wherein the distracting rod 3 penetrates through the first connecting piece 1, the distracting rod 3 is in threaded fit with the first connecting piece 1 (the distracting rod 3 can move up and down when rotating relative to the first connecting piece 1), one end of the distracting rod 3 is rotatably connected with the second connecting piece 4 (the second connecting piece 4 is positioned at one side of the first distracting piece 2), the two ends of the second connecting piece 4 are connected with one end of the second spreading piece 5, the other end of the second spreading piece 5 is connected with the first spreading piece 2 in a sliding way (the sliding direction of one end of the second spreading piece 5 is the length direction of the first spreading piece 2), concretely, when a medical worker inspects the oral cavity of a child, the oral cavity of the child needs to be spread, the condition in the oral cavity of the child is convenient to observe, firstly, the medical worker enables the first connecting piece 1 and the spreading rod 3 to rotate relatively, the second connecting piece 4 at one end of the spreading rod 3 moves towards the first connecting piece 1, the second spreading pieces 5 at two ends of the second connecting piece 4 are all in a sliding way with the first spreading piece 2, when the second connecting piece 4 slides to be in contact with the first connecting piece 1, the first spreading pieces 2 at two ends of the first connecting piece 1 are in a closed state (when the first spreading piece 2 is far away from the first connecting piece 1, the state with the minimum spreading degree is achieved at the moment), the medical staff places the two oppositely arranged first strutting pieces 2 in the mouth cavity of the child to be checked, then the first connecting piece 1 and the strutting rod 3 rotate relatively, the strutting rod 3 drives the second connecting piece 4 to move away from the first connecting piece 1, the second strutting pieces 5 at two ends of the second connecting piece 4 slide with the first strutting pieces 2, and the first strutting pieces 2 slowly rotate relative to the first connecting piece 1, the two oppositely arranged first strutting pieces 2 slowly strut in the mouth cavity of the child, the medical staff makes the strutting rod 3 and the first connecting piece 1 rotate relatively, the second connecting piece 4 can be rotated to slowly keep away from the first connecting piece 1, the second strutting pieces 5 at two ends of the second connecting piece 4 are slowly strut the first strutting pieces 2, even if the opening at one end of the two oppositely arranged first strutting pieces 2 is bigger, the medical staff can slowly strut the mouth cavity of the child according to the condition of the mouth cavity of the child, the condition that children are uncomfortable or the oral cavity of the children is injured due to the fact that the oral cavity of the children is rapidly propped open at one time is avoided.

In the embodiment, when a medical worker inspects the oral cavity of a child, one end of each of two oppositely arranged first spreading parts 2 is placed in the oral cavity of the child, then the spreading rods 3 and the first connecting parts 1 are rotated relatively to enable the spreading rods 3 to move slowly, the spreading rods 3 drive the second connecting parts 4 to move away from the first connecting parts 1, the second spreading parts 5 at the two ends of each second connecting part slowly spread the first spreading parts 2, openings at one ends of the two oppositely arranged first spreading parts 2 are gradually enlarged to slowly spread the oral cavity of the child, and on the one hand, the medical worker can slowly spread the oral cavity of the child according to the condition of the oral cavity of the child, so that the condition that the oral cavity of the child is uncomfortable or injured due to the fact that the oral cavity of the child is quickly spread at one time is avoided; second aspect, medical personnel adjust children oral cavity prop open the degree after, can cancel the power of applying at the pole of strutting 3, then concentrate on examining children's oral cavity (prop open the pole 3 and rotate the condition of strutting that just can adjust children's oral cavity with first connecting piece 1 relatively, medical personnel no longer rotate relatively after adjusting the degree of strutting in children's oral cavity and prop open pole 3 and first connecting piece 1), when having avoided medical personnel to make oral cavity pliers make patient's oral cavity prop open among the prior art, medical personnel need exert force on oral cavity pliers always and just can keep patient's oral cavity to prop open the degree, long-time work can lead to medical personnel's arm ache to influence the operation, and medical personnel's arm exerts force inconvenient medical personnel on oral cavity pliers always and inspects patient's oral cavity.

The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.