CN113100701A

CN113100701A - Visual expansion checker

Info

Publication number: CN113100701A
Application number: CN202110563533.0A
Authority: CN
Inventors: 张洋; 魏信鑫
Original assignee: Suzhou Sangtian Medical Technology Co ltd
Current assignee: Suzhou Sangtian Medical Technology Co ltd
Priority date: 2021-05-24
Filing date: 2021-05-24
Publication date: 2021-07-13
Anticipated expiration: 2041-05-24
Also published as: CN113100701B

Abstract

The invention discloses a visual expansion checker, which comprises an expansion mechanism and a visual mechanism, wherein the expansion mechanism comprises an upper expansion assembly and a lower expansion assembly, the lower expansion assembly comprises a lower expansion piece and a handheld piece connected with the lower expansion piece, the upper expansion assembly is connected with the handheld piece and can rotate relatively, the upper expansion assembly and the lower expansion piece are switched between an open state and a basic closed state in the relative rotation process, when the upper expansion assembly and the lower expansion piece are in the open state, a checking channel is formed between the upper expansion assembly and the lower expansion piece, a visual accommodating part is arranged in the handheld piece, a visual closed end of the visual accommodating part extends into the checking channel, the visual mechanism is arranged in the visual accommodating part, and a visual end of the visual mechanism is positioned in the visual closed end and faces the checking channel. This application forms the visual end of seal through the visual container in the hand-held piece to the visual end to stretching into the visual mechanism in the inspection passageway seals the protection, when avoiding infecting, still makes visual mechanism can reuse, has reduced the use cost of visual expander.

Description

Visual expansion checker

Technical Field

The invention relates to the technical field of medical instruments, in particular to a visual expansion checker.

Background

The vaginal dilator is an essential medical instrument for gynecological disease examination, and during operation, a doctor generally uses the vaginal dilator to dilate a vagina and then performs pathological change examination through visual observation. With the development of science and technology, instruments integrating a light source and a lens into a vaginal dilator have appeared in the prior art, which can externally put images in the vagina, thereby adding a visual field of a doctor and improving the examination efficiency and accuracy. However, when the existing vaginal dilator integrated with the light source lens is used, the light source and the lens are exposed in the vagina and can only be treated as a disposable consumable after being used, so that the vaginal infection risk is increased, and the cost of the light source and the lens as the disposable consumable is higher.

Disclosure of Invention

In response to the deficiencies of the prior art, the present invention provides a visual dilation checker.

The invention discloses a visual expansion checker, which comprises an expansion mechanism, wherein the expansion mechanism comprises an upper expansion assembly and a lower expansion assembly, the lower expansion assembly comprises a lower expansion piece and a handheld piece connected with the lower expansion piece, the upper expansion assembly is connected with the handheld piece and can rotate relatively, the upper expansion assembly and the lower expansion piece are switched between an open state and a basic closed state in the relative rotation process, when the upper expansion assembly and the lower expansion piece are in the open state, an inspection channel is formed between the upper expansion assembly and the lower expansion piece, a visual accommodating part is arranged in the handheld piece, and a visual closed end of the visual accommodating part extends into the inspection channel; and

and the visual end of the visual mechanism is positioned in the visual closed end and faces the inspection channel.

According to an embodiment of the present invention, the lower expansion assembly further comprises a rotation bearing member disposed at an end of the hand piece adjacent to the lower expansion member, and the upper expansion assembly is rotatably connected to the rotation bearing member.

According to an embodiment of the present invention, the rotating carrier includes two rotating carrier plates and two first rotating shafts, the two rotating carrier plates are respectively disposed on two opposite sides of the handheld device, the two first rotating shafts are respectively disposed on two opposite sides of the rotating carrier plates, the upper expanding assembly is rotatably connected to the two first rotating shafts, and the visible closed end of the visible accommodating portion extends into the detection channel from a position between the two rotating carrier plates.

According to an embodiment of the present invention, the upper expansion assembly includes an upper expansion member, an inspection member, and a pressing member, the inspection member is connected to the upper expansion member, the pressing member is disposed on the inspection member, the inspection member is connected to the rotation supporting member and can rotate relatively, a force is applied to the pressing member, the pressing member drives the upper expansion member and the lower expansion member to rotate relatively, the inspection member is formed with an inspection opening, when the inspection member is in an open state, an inspection channel is formed between the upper expansion member and the lower expansion member, and the inspection opening faces the inspection channel.

According to an embodiment of the present invention, the expanding mechanism further includes a side expanding assembly, the side expanding assembly includes a side expanding linkage member and two side expanding members, the side expanding linkage member is rotatably connected to the hand-held member, the upper expanding assembly is connected to the side expanding linkage member, the lower expanding assembly further includes a side expanding action member, the side expanding action member is disposed on the hand-held member and located at one side of the side expanding linkage member close to the lower expanding member, one end of the two side expanding members is connected to the side expanding linkage member, the other end of the two side expanding members extends in a direction away from the side expanding linkage member and passes through the side expanding action member, during the relative opening process of the upper expanding assembly and the lower expanding member, the upper expanding assembly drives the side expanding linkage member to rotate, the side expanding linkage member drives the two side expanding members to swing and pass through the side expanding action member, the side expanding action member acts on the two side expanding members and enables the two side expanding members to open relatively, an inspection channel is formed between the two side expanding members, the upper expanding assembly and the lower expanding, in the relative closing process of the upper expansion assembly and the lower expansion piece, the action of the side expansion action piece on the two side expansion pieces gradually disappears, and the other ends of the two side expansion pieces are relatively closed.

According to an embodiment of the present invention, the side expanding element includes an elastic portion and a side expanding portion, one end of the elastic portion is connected to the side expanding link, the other end of the elastic portion is connected to one end of the side expanding portion, the other end of the side expanding portion passes through the side expanding element and then continues to extend, and the side expanding element is adjacent to the side expanding portion.

According to an embodiment of the present invention, the side expanding action member includes two side expanding action portions, one ends of the two side expanding action portions are respectively connected to two opposite sides of the hand piece, the other ends of the two side expanding action portions extend toward the upper expanding assembly, an interval between the two side expanding action portions is gradually increased, and the two side expanding action portions are respectively located on opposite sides of the two side expanding action portions.

According to one embodiment of the invention, the side expanding linkage piece comprises two side expanding linkage parts which are respectively and rotatably connected to two opposite sides of the hand piece, the two side expanding linkage parts are respectively connected with the two side expanding linkage parts, a linkage groove is formed in each side expanding linkage part, the upper expanding assembly is provided with a linkage shaft, and the linkage shaft is positioned in the linkage groove.

According to an embodiment of the present invention, the expanding mechanism further includes a locking assembly including a locking member and a locking member, the locking member is disposed in the pressing member, the locking member is disposed in the hand piece, the locking member and the locking member are detachably connected, and the locking member locks the opened state of the upper expanding member and the lower expanding member when connected to each other.

According to an embodiment of the present invention, the locking member has a locking position, the locking member includes a locking bearing portion, a shifting portion and a one-way locking portion, the shifting portion is rotatably connected to the locking bearing portion, the one-way locking portion is disposed on the shifting portion, the one-way locking portion is adapted to the locking position, and applies a force to the shifting portion, the shifting portion drives the one-way locking portion to be connected to or disconnected from the locking position, and during connection, the one-way locking portion and the locking position perform one-way relative movement.

According to an embodiment of the present invention, the locking member further includes a reset portion, the reset portion is respectively connected to the lock movement bearing portion and the toggle portion, the toggle portion drives the one-way locking portion to be disengaged from the lock stopping portion, and the reset portion resets the toggle portion, so that the one-way locking portion is connected to the lock stopping portion and maintains a connection state therebetween.

According to one embodiment of the present invention, the visual mechanism includes a visual housing and a visual component disposed in the visual housing, the visual housing has a larger end and a smaller end, the visual housing is disposed in the visual accommodating portion, and the smaller end is disposed in the visual closed end; the viewing end of the viewing assembly is located within the smaller end of the viewing housing and faces the inspection channel.

The beneficial effect of this application lies in: the visual end is sealed through the visual containing part in the hand piece, so that the visual end of the visual mechanism stretching into the inspection channel is sealed and protected, infection is avoided, the visual mechanism can be reused, and the use cost of the visual dilator is reduced.

Drawings

The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:

FIG. 1 is a schematic structural view of the visual dilation checker in an expanded state in an embodiment;

FIG. 2 is a schematic structural view of the expanding mechanism in the closed state in the embodiment;

FIG. 3 is a schematic view of the visual dilation checker according to an embodiment shown in an expanded state;

FIG. 4 is a schematic structural view of a lower expansion member of the embodiment;

FIG. 5 is an enlarged view of the portion A of FIG. 3 in the example;

FIG. 6 is a schematic view of the lower expansion member in an expanded state according to the embodiment;

FIG. 7 is a schematic view showing the construction of the lower expansion member in the substantially closed state according to the embodiment

FIG. 8 is a structural view illustrating a state where the locking member and the locking member are coupled to each other in the embodiment;

FIG. 9 is a structural view illustrating a state where the locking member is disengaged from the locking member in the embodiment;

FIG. 10 is a schematic structural view of a locking member in the embodiment;

FIG. 11 is a schematic view of the visual mechanism and the locking member of the embodiment.

Detailed Description

In the following description, for purposes of explanation, numerous implementation details are set forth in order to provide a thorough understanding of the various embodiments of the present invention. It should be understood, however, that these implementation details are not to be interpreted as limiting the invention. That is, in some embodiments of the invention, such implementation details are not necessary. In addition, some conventional structures and components are shown in simplified schematic form in the drawings.

It should be noted that all the directional indications such as up, down, left, right, front and rear … … in the embodiment of the present invention are only used to explain the relative positional relationship, movement, etc. between the components in a specific posture as shown in the drawings, and if the specific posture is changed, the directional indication is changed accordingly.

In addition, the descriptions related to the first, the second, etc. in the present invention are only used for description purposes, do not particularly refer to an order or sequence, and do not limit the present invention, but only distinguish components or operations described in the same technical terms, and are not understood to indicate or imply relative importance or implicitly indicate the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.

As used herein, the term "substantially closed" and grammatical related terms refer to the relative structural arrangement of two objects: one of the objects is positioned perfectly closed to the other object or one of the objects is positioned in such a way that it is immediately recognizable as closed to the other object although not perfectly closed to the other object. A relative structural arrangement between two objects that is not perfectly closed but immediately recognizable as closed due to acceptable tolerances suitable for manufacturing a device of the type described herein is considered to be positioned substantially closed.

For further understanding of the contents, features and effects of the present invention, the following embodiments are enumerated in conjunction with the accompanying drawings, and the following detailed description is given:

referring to fig. 1 to 3, fig. 1 is a schematic structural view of the visual expansion checker in an open state in the embodiment, fig. 2 is a schematic structural view of the expansion mechanism in the embodiment in a closed state, and fig. 3 is a schematic structural view of the visual expansion checker in another view angle in the embodiment in the open state. The visual dilation checker in this embodiment includes a dilation mechanism 1 and a visualization mechanism 2. The expansion mechanism 1 comprises an upper expansion component 11 and a lower expansion component 12, the lower expansion component 12 comprises a lower expansion part 121 and a hand-held part 122 connected with the lower expansion part 121, the upper expansion component 11 is connected with the hand-held part 122 and can rotate relatively, the upper expansion component 11 and the lower expansion part 121 are switched between an open state and a basically closed state in the relative rotation process, when the upper expansion component 11 and the lower expansion part 121 are in the open state, an inspection channel is formed between the upper expansion component 11 and the lower expansion part 121, a visual accommodating part 1221 is arranged in the hand-held part 122, and a visual closed end 12211 of the visual accommodating part 1221 extends into the inspection channel. The visual mechanism 2 is disposed in the visual accommodating portion 1221, and the visual end of the visual mechanism 2 is located in the visual closed end 12211 and faces the inspection passage.

The visual end 12211 is sealed by the visual accommodating part 1221 in the hand piece 122, so that the visual end of the visual mechanism 2 extending into the inspection channel is sealed and protected, infection is avoided, the visual mechanism 2 can be reused, and the use cost of the visual dilator is reduced.

Referring also to fig. 4, fig. 4 is a schematic structural view of the lower expansion member of the present embodiment. Further, the lower expansion assembly 12 further comprises a rotation bearing member 123, the rotation bearing member 123 is disposed at one end of the hand piece 122 close to the lower expansion member 121, and the upper expansion assembly 11 is rotatably connected to the rotation bearing member 123. The rotational bearing of the upper expansion assembly 11 is facilitated by the provision of the rotational bearing 123.

Preferably, the upper expansion assembly 11 includes an upper expansion member 111, an inspection member 112 and a pressing member 113, the inspection member 112 is connected to the upper expansion member 111, the pressing member 113 is disposed on the inspection member 112, the inspection member 112 is connected to the rotation carrier 123 and can rotate relatively, a force is applied to the pressing member 113, the pressing member 113 drives the upper expansion member 111 and the lower expansion member 121 to rotate relatively, the detection member 112 forms an inspection opening 1121, when in an open state, an inspection channel is formed between the upper expansion member 111 and the lower expansion member 121, and the inspection opening 1121 faces the detection channel. By providing the inspection piece 112 with the inspection hole 1121 as the rotational connection position of the upper expansion assembly 11 and the rotational carrier 123 of the lower expansion assembly 12, the inspection hole 1121 on the inspection piece 112 is brought into a corresponding relationship with the inspection passage, thereby facilitating the operation of the doctor through the inspection hole 1121, such as a treatment operation.

Specifically, the upper expansion member 111 is in a segment shape, and the cross section of the upper expansion member 111 has an arc structure, and when the upper expansion member 111 and the lower expansion member 121 are in a substantially closed state, the arc structure can form a closed space between the upper expansion member 111 and the lower expansion member 121. The surface of the upper expansion piece 111 opposite to the lower expansion piece 121 is a smooth curved surface, so that the vagina can be prevented from being damaged by the upper expansion piece 111 when the upper expansion piece is opened. In a specific application, a surface of the upper expansion element 111 facing away from the lower expansion element 121 may be a circular arc curved surface or a non-circular arc curved surface. Preferably, one end of the upper expansion piece 111, which is far away from the inspection piece 112, is provided with a first head 1111, and the first head 1111 has an arc structure, so that the upper expansion piece 111 can be smoothly inserted into the vagina through the arrangement of the first head 1111, and the vagina can be prevented from being damaged. The inspection piece 112 includes a transition plate 1122 and two side plates 1123, one end of the transition plate 1122 is integrally connected to the upper expansion piece 111, and the two side plates 1123 are respectively integrally connected to opposite sides of the transition plate 1122. The transition plate 1122 and the two side plates 1123 are approximately U-shaped in cross section. Preferably, the side of the transition plate 1122 facing away from the lower expansion member 12 has a curved surface 11221, the curved surface 11221 has a curved structure with a curved corner, the curved corner is an obtuse angle, and the curved surface 11221 in this embodiment is located at the end of the transition plate 1122 close to the upper expansion member 111. The curved surface position 11221 is arranged to facilitate the folding of the upper expansion piece 111 and the lower expansion component 12 and form a basically closed state, and when the upper expansion piece 111 and the lower expansion component 12 are opened to form an inspection channel, the curved surface position 11221 can enable the upper expansion piece 111 to be tilted and opened in place, so that the inspection channel is ensured to have enough expansion space to complete the inspection. In addition, when the upper expansion piece 111 and the lower expansion piece 121 are in a basically closed state and enter the vagina, the transition plate 1122 with the curved surface position 11221 can limit the depth of the upper expansion piece 111 entering the vagina, so that the upper expansion piece 111 is prevented from entering the vagina too deeply. The pressing member 113 is located between the two side plates 1123, one end of the pressing member 113 is integrally connected to the two side plates 1123, respectively, and the other end of the pressing member 113 extends in a direction away from the side plates 1123. The pressing member 113 in this embodiment has a plate shape, and the inspection hole 1121 is formed by fitting the pressing member 113, two side plates 1123, and a transition plate 1122. Preferably, the extension line of the pressing member 113 intersects with the extension line of the upper expansion member 111 at an obtuse angle or a right angle, so that the pressing member 113 can be pressed by a doctor to apply a force, and the upper expansion member 111 can be smoothly rotated to be opened. Preferably, the pressing member 113 has an anti-slip thread at the other end away from the side plate 1123, so as to avoid the slipping problem caused by the force applied by the doctor when pressing the pressing member 113. The upper expansion member 111, the inspection member 112 and the pressing member 113 in this embodiment are integrally formed, so that the structural stability of the upper expansion assembly 11 can be ensured. In a specific application, the upper expansion component 11 can be integrally injection-molded by high-transparency plastic, so that the transparency of the upper expansion piece 111 is ensured, and the effect and the result of visual inspection are ensured.

The lower expansion piece 121 is in a segment shape, the cross section of the lower expansion piece 121 has an arc-shaped structure, when the upper expansion piece 111 and the lower expansion piece 121 are in a basically closed state, a closed space is formed between the upper expansion piece 111 and the lower expansion piece 121, and one surface of the lower expansion piece 121, which is back to the upper expansion piece 111, is a smooth curved surface, so that the lower expansion piece 121 can be prevented from damaging the vagina when the lower expansion piece 121 is opened. In a specific application, a surface of the lower expansion element 121 facing away from the upper expansion element 111 may be a circular arc curved surface or a non-circular arc curved surface. Preferably, the end of the lower expansion member 121 away from the examination member 112 is provided with a second head 1211, the second head 1211 is of an arc structure, and the second head 1211 is arranged to facilitate the smooth insertion of the lower expansion member 121 into the vagina and also avoid damage to the vagina. The upper expansion piece 111 is matched with the lower expansion piece 121, when the upper expansion piece 111 and the lower expansion piece 121 are in a basically closed state, the first head portion 1111 and the second head portion 1211 are synchronously folded, and the first head portion 1111 and the second head portion 1211 are matched to form an approximately semi-elliptical or semi-circular structure, so that the expansion mechanism 1 in the closed state can smoothly enter the vagina, the vagina is prevented from being damaged, and discomfort of a detected person is reduced. The hand piece 122 is integrally connected to the lower expansion member 121. The handheld piece 122 can realize the integral bearing of the visual mechanism 2, realize the integral design of the visual function, and facilitate the handheld operation of doctors.

The hand piece 122 is a shell shape, the shape of the hand piece is matched with the palm of a person in a holding state, so that a doctor can hold the hand piece 122 conveniently, one end of the hand piece 122 close to the lower expansion piece 121 is small, the other end far away from the lower expansion piece 121 is large, and the whole body is of a streamline bent shell structure. The visual accommodating part 1221 is located in the hand piece 122, specifically, one end of the visual accommodating part 1221 is larger and is an internal space of the hand piece 122, the other end of the visual accommodating part 1221 is a smaller closed visual end 12211, the closed visual end 12211 of the visual accommodating part 1221 extends into the inspection channel, the shape of the visual mechanism 2 is matched with the internal space of the visual accommodating part 1221, the visual end of the visual mechanism 2 is matched with the closed visual end 12211, the whole visual accommodating part 1221 has no structure with a small top and a large bottom, the visual mechanism 2 is smoothly accommodated in the visual accommodating part 1221, and the visual end of the visual mechanism 2 is smoothly accommodated in the closed visual end 12211, so that the visual end of the visual mechanism 2 extends into the inspection channel, and the closed visual end 12211 can also seal the visual end of the visual mechanism 2 to prevent the visual mechanism 2 from being infected, the visual mechanism 2 with higher cost can be reused, and the cost of gynecological disease examination and screening is reduced. The end of the visual accommodating portion 1221 having the closed visual end 12211 in this embodiment extends along the length direction of the lower expansion member 121, and the specific extending length may be determined according to actual conditions, preferably, when the lower expansion member 121 and the upper expansion member 111 open the vagina, the closed visual end 12211 is located right at the vaginal opening, so as to be able to visually display the inside of the whole vagina, and of course, according to actual requirements, the end of the visual accommodating portion 1221 having the closed visual end 12211 may continue to extend towards the deep part of the vagina along the length direction of the lower expansion member 121, which is not limited herein. Preferably, the closed visible end 12211 of the accommodating portion 1221 extending into the examination channel has a bearing position 12212, and the bearing position 12212 is arranged to facilitate the bearing when the doctor operates other medical instruments to extend into the examination channel, so as to facilitate the stable use of the medical instruments. Specifically, the closed visible end 12211 of the accommodating portion 1221 extending into the inspection passage is a regular polyhedron, for example, an approximately rectangular parallelepiped, the side wall of the closed visible end 12211 facing the upper expansion member 111 is the bearing position 12212, and the bearing position 12212 is approximately a plane structure, or a concave structure with a slightly concave structure. The end of the hand piece 122 remote from the lower expansion piece 121 has an opening 12213, and the opening 12213 is communicated with the accommodating part 1221 so as to facilitate the visual mechanism 2 to be accommodated in the accommodating part 1221 or detached from the accommodating part 1221.

Preferably, the rotation bearing member 123 includes two rotation bearing plates 1231 and two first rotation shafts 1232, the two rotation bearing plates 1231 are respectively disposed at two opposite sides of the handle 122, the two first rotation shafts 1232 are respectively disposed at two opposite sides of the rotation bearing plates 1231, the upper expansion assembly 11 is rotatably connected to the two first rotation shafts 1232, and the visible closed end 12211 of the visible accommodating portion 1221 is extended into the detection passage from a position between the two rotation bearing plates 1231. Specifically, the two side plates 1123 are respectively located on the opposite sides of the two bearing plates 1231, and the two side plates 1123 are respectively connected to the lower expansion assembly 12 by the two first rotating shafts 1232 and the two rotating bearing plates 1231 in a rotating manner. The opening and closing actions of the upper and

lower expansion pieces

111 and 121 are smoothly performed by the rotational engagement of the two side plates 1123, the two rotational carrier plates 1231, and the two first rotation shafts 1232. The lower expansion member 12 in this embodiment is also integrally injection molded from a high-transparency plastic, so as to ensure transparency of the lower expansion member 121 and the closed visible end 12211, and ensure the effect and result of visual inspection.

Referring to fig. 5 to 7, fig. 5 is an enlarged view of a portion a of fig. 3 in the embodiment, fig. 6 is a schematic structural view of the lower expansion member in an open state in the embodiment, and fig. 7 is a schematic structural view of the lower expansion member in a substantially closed state in the embodiment. Furthermore, the expanding mechanism 1 further includes a side expanding assembly 13, the side expanding assembly 13 includes a side expanding linkage 131 and two side expanding members 132, the side expanding linkage 131 is rotatably connected to the handheld member 122, the upper expanding assembly 11 is connected to the side expanding linkage 131, the lower expanding assembly 12 further includes a side expanding action member 124, the side expanding action member 124 is disposed on the handheld member 122 and is located at one side of the side expanding linkage 131 close to the lower expanding member 121, one end of the two side expanding members 132 is connected to the side expanding linkage 131, the other end of the two side expanding members 132 extends towards the direction far from the side expanding linkage 131 and passes through the side expanding action member 124, during the relative opening process of the upper expanding assembly 11 and the lower expanding member 121, the upper expanding assembly 11 drives the side expanding linkage 131 to rotate, the side expanding linkage 131 drives the two side expanding members 132 to swing and pass through the side expanding action member 124, the side expanding action member 124 acts on the two side expanding members 132, and the two side expansion pieces 132 are relatively opened, an inspection channel is formed among the two side expansion pieces 132, the upper expansion assembly 11 and the lower expansion piece 121, the action of the side expansion action piece 124 on the two side expansion pieces 132 is gradually lost during the relative closing process of the upper expansion assembly 11 and the lower expansion piece 121, and the other ends of the two side expansion pieces 132 are relatively closed.

Through two side expansion piece 132, go up expansion block 11 and expansion block 12 cooperation down and carry out the inspection passageway that the four wings expansion and formed, its passageway space is bigger and passageway space is more regular, so can be more convenient for look at the inspection to the convenience of inspection has been promoted. Moreover, in the present embodiment, through the cooperation of the side expanding linkage member 131, the two side expanding members 132 and the side expanding action member 124, linkage is formed with the relative rotation process between the upper expanding assembly 11 and the lower expanding assembly 12, so that the two side expanding members 132 are opened and closed synchronously along with the opening and closing actions of the upper expanding assembly 11 and the lower expanding assembly 12, the whole four-wing expanding structure is simple, the cost is low, the operation of the gynecological examination device is convenient, and the convenience in use of a doctor is improved. In this embodiment, the two closed side expansion elements 132 are accommodated in the closed space formed between the upper expansion element 111 and the lower expansion element 121. Thus, the gynecological examination device can be conveniently inserted into the vagina in a closed state. In addition, the whole volume of the gynecological inspectoscope with the four-wing expansion structure in the embodiment is not greatly changed when the gynecological inspectoscope with the two-wing expansion structure is closed, so that the two types of gynecological inspectoscope can be conveniently packaged and transported in a unified manner.

Preferably, the side expanding member 132 includes an elastic portion 1321 and a side expanding portion 1322, one end of the elastic portion 1321 is connected to the side expanding link 131, the other end of the elastic portion 1321 is connected to one end of the side expanding portion 1322, the other end of the side expanding portion 1322 extends after passing through the side expanding member 124, and the side expanding member 124 is adjacent to the side expanding portion 1322. The end of the side expansion part 1322 connected to the elastic part 1321 and the side expansion element 124 are relatively movable, and when in an open state, the two side expansion parts 1322, the upper expansion module 11 and the lower expansion module 12 form an inspection channel. In this embodiment, the two side expansion parts 1322, the upper expansion part 111 and the lower expansion part 121 form an inspection channel therebetween. By the engagement of the elastic portion 1321 and the side expansion portions 1322, the two side expansion portions 1322 can be opened by the side expansion operation piece 124 and closed after the operation of the side expansion operation piece 124 is removed, by the elastic deformation and restorability of the elastic portion 1321. Specifically, the elastic portion 1321 is a spring. The side expansion part 1322 comprises a side expansion section 13221, a bending section 13222 and an action section 13223, one end of the bending section 13222 is connected with the side expansion section 13221, the other end of the bending section 13222 is connected with the action section 13223, an inspection channel is formed between the two side expansion sections 13221, the upper expansion piece 111 and the lower expansion piece 121, and the opposite surfaces of the two side expansion sections 13221 are of curved structures so as to avoid damage to the vagina when the side expansion parts are opened. The bending section 13222 has a bending angle section, and under the condition of an external action, the bending angle structure of the two bending sections 13222 makes the two side expansion sections 13221 in a substantially closed state, two ends of the elastic part 1321 are respectively connected with the action section 13223 and the side expansion linkage 131, an action position 132231 is arranged on one surface of the two action sections 13223 opposite to each other, and the action position 132231 is arranged so as to form a movable connection relation with the side expansion action piece 124, in this embodiment, the action position 132231 is approximately in a U-shaped chute structure, and can form a sliding relation with the side expansion action piece 124, limit the side expansion action piece 124, and prevent the side expansion action piece 124 from sliding out. The side expanding segment 13221, the bending segment 13222 and the acting segment 13223 in this embodiment are integrally formed.

Preferably, the side enlarging element 124 includes two side enlarging elements 1241, one ends of the two side enlarging elements 1241 are respectively connected to two opposite sides of the handle 122, the other ends of the two side enlarging elements 1241 extend toward the upper expansion assembly 11, the interval between the two side enlarging elements 1241 gradually increases, and the two side enlarging elements 132 are respectively located on the opposite sides of the two side enlarging elements 1241. The side expansion members 132 in this embodiment are in sliding contact with side expansion elements 1241. The two side expansion parts 1241 are gradually opened to open the two side expansion members 132. Specifically, the one end of two side expansion action parts 1241 is connected on two loading boards 1231 respectively, side expansion action part 1241 is located loading board 1231 and is close to one side of lower expansion piece 121, side expansion action part 1241 is the platelike structure, the other end of two side expansion action parts 1241 extends towards last expansion piece 111, and by the direction of expansion piece 121 to last expansion piece 111 down, the interval between two side expansion action parts 1241 is bigger and bigger, is the opening structure that expands outward. The side expansion action part 1241 is in sliding contact with the action site 132231. Preferably, the side expansion action 1241 is curved plate-like so as to form a sliding fit with the action site 132231 of the U-shaped chute arrangement.

Preferably, the side expanding linkage 131 comprises two side expanding linkage portions 1311, the two side expanding linkage portions 1311 are respectively rotatably connected to two opposite sides of the lower expansion assembly 12, the two side expanding linkage portions 1311 are respectively connected to the two side expansion members 132, and the two side expanding linkage portions 1311 are both connected to the upper expansion assembly 11. Through the arrangement of the two side expansion linkage parts 1311, the two side expansion pieces 132 are driven to rotate. Specifically, the opposite sides of the two bearing plates 1231 are further provided with a second rotating shaft 1233, the second rotating shaft 1233 is located between the first rotating shaft 1232 and the side expanding portion 1241, the two side expanding linkage portions 1311 are respectively located on the opposite sides of the two bearing plates 1231 and are located in the two side plates 1123, and the two bearing plates 1231 are respectively connected in a rotating manner with the two side expanding linkage portions 1311 through the second rotating shaft 1233. The elastic portion 1321 is connected to the side expanding link portion 1311. The side widening link 1311 in this embodiment is plate-shaped. Preferably, the side expander link 131 further includes an integral connecting portion 1312, and the integral connecting portions 1312 are connected to the two side expander link portions 1311, respectively. The two expansion link parts 1311 are formed into an integral structure by the integral connection part 1312, thereby ensuring synchronous rotation of the two side expansion link parts 1311. Specifically, the integral connecting portion 1312 is an arc plate, two side expansion linkage portions 1311 and the integral connecting portion 1312 are matched to form a U-shaped structure, wherein the side expansion linkage portions 1311 are adjacent to the side plate 1123, and the integral connecting portion 1312 is adjacent to the transition plate 1122.

Preferably, the side expanding linkage part 1311 is provided with a limiting groove 13111, the upper expansion assembly 11 is provided with a limiting linkage shaft 114, the linkage shaft 114 is slidably connected in the limiting groove 13111, and during the relative opening process of the upper expansion assembly 11 and the lower expansion assembly 12, the limiting linkage shaft 114 slides in the limiting groove 13111 and drives the side expanding linkage part 1311 to rotate. The linkage of the upper expansion component 11 to the side expansion component 13 is realized by the linkage shaft 114 matching with the limit groove 13111 on the side expansion linkage part 1311. Specifically, the limiting groove 13111 is a through groove, which is opened in the side expansion linkage portion 1311, and an extension line of the limiting groove 13111 intersects with a straight line parallel to an extension line of the side expansion section 13221, and an intersecting included angle is an obtuse angle. The two linkage shafts 114 are respectively arranged on the opposite surfaces of the two side plates 1123, and the two linkage shafts 114 are respectively connected in the two limiting grooves 13111 in a sliding manner.

The expansion of the side expansion assembly 13 in this embodiment is as follows: when a doctor opens the gynecological examination device, acting force is applied to the pressing piece 113, the pressing piece 113 drives the two side plates 1123 to rotate, and the upper expansion piece 111 and the lower expansion piece 121 are opened relatively; the two side plates 1123 rotate to drive the two linkage shafts 114 to move, the two linkage shafts 114 slide in the limiting grooves 13111 and drive the two side expanding linkage portions 1311 to rotate, the two side expanding linkage portions 1311 rotate to drive the two elastic portions 1321 to swing from the lower expansion piece 121 to the upper expansion piece 111, the swinging elastic portions 1321 drive the side expansion sections 13221 of the two side expanding portions 1322 to swing in the same direction, at this time, the action positions 132231 of the two action sections 13223 respectively slide on the two side expanding action portions 1241, because the two side expanding action portions 1241 are of an outward expanding opening structure, the two side expansion sections 13221 are pushed to be relatively far away, so that the two side expansion sections 13221 are relatively expanded, at this time, the elastic portions 1321 deform, that when the upper expansion piece 111 and the lower expansion piece 121 are relatively expanded, the side expansion sections 13221 swing from the lower expansion piece 121 to the upper expansion piece 111, the two side expansion segments 13221 are opened relatively, so that the four-wing expansion is realized by matching the upper expansion piece 111 and the lower expansion piece 121. In this embodiment, during the process of the upper and

lower expansion members

111 and 121, the side expansion section 13221 is located at the middle position of the upper and

lower expansion members

111 and 121, so that the shape of the examination channel formed by the two side expansion sections 13221, the upper expansion member 111 and the lower expansion member 121 is more regular, thereby facilitating gynecological examination or treatment. The closing process of the side expansion assembly 13 in this embodiment is opposite to the opening process, and the elastic portion 1321 brings the two side expansion sections 13221 to close by its own elasticity, which is not described herein again.

Referring to fig. 8 to 10 together, fig. 8 is a structural view illustrating a state where a locking member and a locking member are coupled in the embodiment, fig. 9 is a structural view illustrating a state where the locking member and the locking member are decoupled in the embodiment, and fig. 10 is a structural view illustrating the locking member in the embodiment. Furthermore, the expanding mechanism 1 further includes a locking assembly 14, the locking assembly 14 includes a locking member 141 and a locking member 142, the locking member 141 is disposed on the pressing member 113, the locking member 142 is disposed in the handle 122, the locking member 141 and the locking member 142 are detachably connected, and when the locking member 141 and the locking member 142 are connected, the opening state of the upper expanding member 111 and the lower expanding member 121 is locked. By locating the locking member 142 within the handpiece 122, leakage is prevented from interfering with the surgeon's gripping of the handpiece 122. And the open states of the upper and

lower expansions

111 and 121 are locked by coupling the locking member 141 and the locking member 142, thereby maintaining the stability of the inspection passage.

Preferably, the locking member 141 has a locking position 1411, the locking member 142 includes a lock moving bearing part 1421, a toggle part 1422 and a one-way locking part 1423, the toggle part 1422 is rotatably connected to the lock moving bearing part 1421, the one-way locking part 1423 is disposed on the toggle part 1422, the one-way locking part 1423 is adapted to the locking position 1411, a force is applied to the toggle part 1422, the toggle part 1422 drives the one-way locking part 1423 to connect with or disconnect from the locking position 1411, and during connection, the one-way locking part 1423 and the locking position 1411 perform one-way relative movement. When the one-way locking portion 1423 is connected to the locking portion 1411, the lower expansion member 121 and the upper expansion member 111 are opened to form an inspection channel, and then the one-way locking portion 1423 and the locking portion 1411 are limited to perform only one-way relative movement, that is, only the opening motion between the lower expansion member 121 and the upper expansion member 111 is performed, and under the reverse action of the unconscious vagina contraction, the opened state of the lower expansion member 121 and the upper expansion member 111 can be still maintained, thereby ensuring the smooth formation and state maintenance of the inspection channel.

Specifically, the locking bearing part 1421 includes a bearing housing 14211, the bearing housing 14211 is embedded in the visual mechanism 2, and two ends of the bearing housing 14211 are respectively communicated with two opposite sides of the visual mechanism 2. One end of the bearing housing 14211 is exposed to the visual mechanism 2 and forms a toggle opening 14212, and the toggle opening 14212 facilitates the extension of the toggle part 1422 from the visual mechanism 2. The outer wall of the bearing housing 14211 is annularly provided with a bearing limiting plate 14214, the bearing limiting plate 14214 is flush with the toggle port 14212, and the position of the bearing housing 14211 embedded in the visual mechanism 2 is limited by the arrangement of the bearing limiting plate 14214. The side wall of the bearing housing 14211 facing the locking member 141 is provided with a moving opening 14214, the moving opening 14214 is disposed along the length direction of the bearing housing 14211, and the width of the moving opening 14214 is greater than the thickness of the locking portion 1411.

Preferably, one end of the toggle part 1422 is rotatably connected to the lock moving bearing part 1421, the other end of the toggle part 1422 is provided with a toggle position 14221, the toggle part 1422 is provided with a lock bearing position 14222, and the one-way lock part 1423 is provided in the lock bearing position 14222. The toggle part 1422 is toggled by setting the toggle position 14221 so that the doctor can apply force to the toggle part 1422, and the one-way locking part 1423 is carried by setting the lock carrying position 14222. Specifically, the toggle part 1422 includes a toggle body 14223, and the toggle body 14223 is located in the inner space of the bearing housing 14211. One end of the toggle position 14221 is connected to one end of the toggle body 14223, and the other end of the toggle position 14221 extends out of the toggle port 14212 and the hand piece 122, so that the toggle position 14221 leaks through the visual mechanism 2 and the hand piece 122, and can be toggled by a doctor holding the hand piece 122. The toggle 14221 in this embodiment can be in the shape of a trigger suitable for being toggled by a human finger. The locking bearing position 14222 includes two opposite locking bearing plates 142221, the two locking bearing plates 142221 are disposed at the other end of the toggle main body 14223 side by side, and the two locking bearing plates 142221 are engaged with the end of the other end of the toggle main body 14223 to form a U-shaped structure. The toggle part 1422 further includes a rotating shaft 14224, the rotating shaft 14224 is disposed on the bearing housing 14211, and one ends of the two lock bearing plates 142221 far from the toggle main body 14223 are respectively rotatably connected to the rotating shaft 14224, so that the toggle part 1422 and the lock bearing part 1421 form a rotational connection relationship to act on the toggle position 14221, and the lock bearing position 14222 formed by the two lock bearing plates 142221 can be close to or far from the moving opening 14214, thereby driving the one-way lock part 1423 on the lock bearing position 14222 to be close to or far from the moving opening 14214.

Preferably, the one-way locking portion 1423 includes a one-way bearing 14231 and a gear 14232, the one-way bearing 14231 is disposed on the locking bearing position 14222, the gear 14232 is sleeved on the one-way bearing 14231, a plurality of first engaging teeth 142321 are sequentially disposed on a circumference of the gear 14232, the locking position 1411 includes a plurality of second engaging teeth 14111 sequentially disposed along a length direction of the locking member 141, and the first engaging teeth 142321 and the second engaging teeth 14111 are adapted to be engaged with or disengaged from each other. The unidirectional movement is realized by arranging the unidirectional bearing 14231 such that the first engaging tooth 142321 on the gear 14232 is movably engaged with the second engaging tooth 14111 on the locking position 1411 only in a single direction. Specifically, the one-way bearing 14231 is disposed between the locking bearing plates 142221, and the gear 14232 is sleeved outside the one-way bearing 14231 and faces the moving opening 14214. The one-way bearing 14231 in the present embodiment may adopt an existing one-way bearing structure, and is not limited herein. In the plurality of first engaging teeth 142321 on the circumference of the gear 14232, the pitch between two adjacent first engaging teeth 142321 is the same, the pitch between two adjacent second engaging teeth 14111 in the plurality of second engaging teeth 14111 is the same, and the first engaging teeth 142321 are matched with the second engaging teeth 14111. The side of the locking member 141 facing the moving port 14214 in this embodiment has an arc structure along which a plurality of second engaging teeth 14111 are sequentially disposed on the locking member 141, so that the structure facilitates the engaging and disengaging of the first engaging teeth 142321 and the second engaging teeth 14111. The locking member 141 in this embodiment is formed in an arc-shaped long plate shape. The physician applies a force to the toggle position 14221 to swing the toggle part 1422, so as to bring the gear 14232 close to the moving opening 14214, so that the first engaging tooth 142321 is engaged with the second engaging tooth 14111, and acts in reverse on the toggle position 14221 to swing the toggle part 1422 in reverse, so as to disengage the first engaging tooth 142321 from the second engaging tooth 14111.

Preferably, the first and second engagement teeth 142321, 14111 are ratchet teeth that are oppositely sloped. The ratchet teeth of the first engagement teeth 142321 and the second engagement teeth 14111 are opposite in direction, and can form an approximate barb structure after being engaged, so that the expanded state of the lower expansion piece 121 and the upper expansion piece 111 is further maintained under the tightening action of the vagina.

Preferably, the locking member 142 further includes a reset portion 1424, the reset portion 1424 is connected to the lock moving bearing portion 1421 and the toggle portion 1422, the toggle portion 1422 drives the one-way locking portion 1423 to disengage from the locking position 1411, and the reset portion 1424 resets the toggle portion 1422, so that the one-way locking portion 1423 is connected to the locking position 1411 and maintains a connection state therebetween. Through the arrangement of the reset part 1424, under the condition that no doctor acts on the toggle position 14221, the reset part 1424 acts on the toggle part 1422, so that the one-way locking part 1423 is connected with the locking position 1411, that is, the first engaging tooth 142321 is meshed with the second engaging tooth 14111, so as to maintain the open state of the lower expansion piece 121 and the upper expansion piece 111, and to maintain the formed examination channel state unchanged, so that the doctor does not need to act on the toggle part 1422 in a consistent manner, and thereby hands of the doctor are released for other operations. Specifically, the reset portion 1424 is an elastic member capable of being reset, the reset portion 1424 in this embodiment is a torsion spring, which is sleeved on the rotating shaft 14224, and two ends of the reset portion 1424 are respectively connected to the locking bearing plate 142221 and the bearing housing 14211.

Referring to fig. 11, fig. 11 is a schematic structural view of the visible mechanism and the locking member in the embodiment. Further, the viewing mechanism 2 includes a viewing housing 21 and a viewing component (not shown) disposed in the viewing housing 21, the viewing housing 21 has a larger end and a smaller end, the viewing housing 21 is disposed in the viewing accommodating portion 1221, and the smaller end is disposed in the viewing closed end 12211; the viewing end of the viewing assembly is located within the smaller end of the viewing housing 21 and faces the inspection channel. Specifically, the visible component may be an existing visible module, for example, a visible module formed by matching a lens, an LED lamp, a control chip, a battery, a transmission line, or a wireless transmission chip, where the lens and the LED lamp may form a visible end of the visible component, the lens is used for capturing an image in the vagina, the LED lamp is used for providing light required for capturing, the control chip is used for controlling power supply, a switch, and other functions, the battery is used for providing a power supply, and the transmission line or the wireless transmission chip is used for transmitting the captured image. The appearance of the visual shell 21 in this embodiment is matched with the inner cavity of the accommodating part 1221, and the appearance of the visual shell 21 is a structure with one smaller end and one larger end, and the whole structure is streamline, so that the visual shell 21 can be smoothly accommodated in the accommodating part 1221 by the structure, and the visual shell 21 can be conveniently withdrawn. When the visual component is disposed in the visual housing 21, the visual end of the visual component is concentratedly mounted on the smaller end of the visual housing 21, so as to form the visual end of the visual mechanism 2, and when the visual housing 21 is accommodated in the accommodating portion 1221, the smaller end of the visual housing 21 is correspondingly accommodated in the closed visual end 12211 of the accommodating portion 1221, that is, the visual end of the visual mechanism 2 is accommodated in the closed visual end 12211 of the accommodating portion 1221, so that the visual end of the visual component faces the inspection channel for inspection. Preferably, the visible end is received in the receiving portion 1221 adjacent to the closed visible end 12211.

Preferably, a catch plate 12214 is provided at the opening of the handpiece 122. The outer wall of the larger end of the visual housing 21 is provided with an elastic clamping sheet 212, the elastic clamping sheet 212 is matched with the clamping sheet 12214, and when the visual housing 21 is accommodated in the accommodating part 1221 through the opening 12213, the elastic clamping sheet 212 is clamped with the clamping sheet 12214, so that the visual housing 21 is firmly fixed in the accommodating part 1221. The resilient nature of the resilient clip 212, in turn, facilitates its disengagement from the card 12214 to facilitate the visual housing 21 exiting the receptacle 1221 through the opening 1221.

Preferably, the visual housing 21 has a lock position 211, and the locking member 142 is located in the lock position 211. The lock position 211 in this embodiment is an installation space having both ends respectively communicating with the opposite sidewalls of the visible housing 21 by opening the lock position 211 so as to facilitate the installation of the lock member 142 in the visible housing 21, and the carrier housing 14211 is correspondingly installed in the lock position 211. The opening 12214 of the handle 122 in this embodiment extends from an end of the handle 122 away from the lower expanding member 121 to a side wall of the handle 122 facing away from the pressing member 114, and corresponds to the locking position 211 of the visible housing 21, so that the toggle position 14221 can be easily leaked out of the handle 122, and when the toggle position 14221 is leaked out of the visible housing 21, the visible housing 21 can still be smoothly assembled into the accommodating portion 1221. A side wall of the hand piece 122 facing the pressing piece 114 is opened with a through opening 12215, the through opening 12215 is opposite to the locking position 211, and the locking piece 141 passes through the through opening 12215 and extends into the locking position 211, so that the locking position 1411 is opposite to the one-way locking part 1423, and the two are connected or disconnected with each other in a fitting manner.

To sum up, form the visual end of sealing through the visual container in the hand-held piece to the visual end to stretching into the visual mechanism in the inspection passageway seals the protection, when avoiding infecting, still makes visual mechanism can reuse, has reduced the use cost of visual expander. Moreover, the whole expansion mechanism is of a four-wing expansion structure, the structure is simple, the operation is convenient, and the formed inspection channel is more convenient to inspect.

The above is merely an embodiment of the present invention, and is not intended to limit the present invention. Various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A visual dilation checker, comprising:

the expansion mechanism comprises an upper expansion assembly and a lower expansion assembly, the lower expansion assembly comprises a lower expansion piece and a handheld piece connected with the lower expansion piece, the upper expansion assembly is connected with the handheld piece and can rotate relatively, the upper expansion assembly and the lower expansion piece are switched between an open state and a basic closed state in the relative rotation process, when the upper expansion assembly and the lower expansion piece are in the open state, an inspection channel is formed between the upper expansion assembly and the lower expansion piece, a visual accommodating part is arranged in the handheld piece, and a visual closed end of the visual accommodating part extends into the inspection channel; and

2. The visual dilation checker according to claim 1, wherein the lower dilation assembly further includes a rotational bearing disposed at an end of the hand piece proximate the lower dilation member, the upper dilation assembly being rotationally coupled to the rotational bearing.

3. The visual expansion inspection device of claim 2, wherein the rotation bearing member comprises two rotation bearing plates and two first rotation shafts, the two rotation bearing plates are respectively disposed on two opposite sides of the hand-held member, the two first rotation shafts are respectively disposed on two opposite sides of the rotation bearing plates, the upper expansion assembly is rotatably connected to the two first rotation shafts, and the visual closed end of the visual accommodation portion extends into the detection channel from a position between the two rotation bearing plates.

4. The visual expansion inspection device of claim 2, wherein the upper expansion assembly comprises an upper expansion member, an inspection member and a pressing member, the inspection member is connected with the upper expansion member, the pressing member is disposed on the inspection member, the inspection member is connected with the rotation bearing member and can rotate relatively, a force is applied to the pressing member, the pressing member drives the upper expansion member and the lower expansion member to rotate relatively, the detection member is formed with an inspection opening, when the detection member is in an open state, an inspection channel is formed between the upper expansion member and the lower expansion member, and the inspection opening faces the detection channel.

5. The visual expansion checker according to claim 1, wherein the expansion mechanism further includes a side expansion assembly, the side expansion assembly includes a side expansion linkage member and two side expansion members, the side expansion linkage member is rotatably connected to the hand-held member, the upper expansion member is connected to the side expansion linkage member, the lower expansion assembly further includes a side expansion member, the side expansion member is disposed on the hand-held member and located at a side of the side expansion linkage member close to the lower expansion member, one end of the two side expansion members is connected to the side expansion linkage member, the other end of the two side expansion members extends in a direction away from the side expansion linkage member and passes through the side expansion member, the upper expansion member and the lower expansion member rotate the side expansion linkage member during relative expansion, the side expansion linkage member drives the two side expansion members to swing and pass through the side expansion member, the side expanding action piece acts on the two side expanding pieces, the two side expanding pieces are opened relatively, an inspection channel is formed among the two side expanding pieces, the upper expansion assembly and the lower expansion piece, in the relative closing process of the upper expansion assembly and the lower expansion piece, the action of the side expanding action piece on the two side expanding pieces is gradually eliminated, and the other ends of the two side expanding pieces are closed relatively.

6. The visual expansion checker according to claim 5, wherein the side expansion unit includes an elastic portion and a side expansion portion, one end of the elastic portion is connected to the side expansion link, the other end of the elastic portion is connected to one end of the side expansion portion, the other end of the side expansion portion passes through the side expansion unit and then continues to extend, and the side expansion unit is adjacent to the side expansion portion.

7. The visual expansion checker according to claim 5, wherein the side expansion elements include two side expansion portions, one ends of the two side expansion portions are respectively connected to opposite sides of the hand piece, the other ends of the two side expansion portions extend toward the upper expansion assembly, and the space between the two side expansion portions is gradually increased, and the two side expansion elements are respectively located on opposite sides of the two side expansion portions.

8. The visual expansion checker according to claim 5, wherein the side expansion linkage member includes two side expansion linkage portions, the two side expansion linkage portions are respectively rotatably connected to two opposite sides of the hand piece, the two side expansion members are respectively connected to the two side expansion linkage portions, a linkage groove is formed on the side expansion linkage portion, the upper expansion assembly has a linkage shaft, and the linkage shaft is located in the linkage groove.

9. The visual expansion inspection device of claim 4, wherein the expansion mechanism further comprises a locking assembly, the locking assembly comprises a locking member and a locking member, the locking member is disposed on the pressing member, the locking member is disposed in the hand piece, the locking member is detachably connected to the locking member, and the locking member locks the opened state of the upper expansion member and the lower expansion member when connected to the locking member.

10. The visual expansion inspection device of claim 9, wherein the locking member has a locking position, the locking member includes a locking bearing portion, a shifting portion and a one-way locking portion, the shifting portion is rotatably connected to the locking bearing portion, the one-way locking portion is disposed on the shifting portion, the one-way locking portion is adapted to the locking position, the shifting portion applies a force, the shifting portion drives the one-way locking portion to be connected with or disconnected from the locking position, and during connection, the one-way locking portion and the locking position perform one-way relative movement.

11. The visual expansion checker according to claim 10, wherein the locking member further includes a reset portion, the reset portion is connected to the lock movement bearing portion and the toggle portion, respectively, the toggle portion drives the one-way locking portion to be separated from the lock stop portion, and the reset portion resets the toggle portion, so that the one-way locking portion is connected to the lock stop portion and maintains a connection state therebetween.

12. The visual dilation checker according to claim 9, wherein the visual mechanism includes a visual housing having a larger end and a smaller end, the visual housing being disposed in the visual receptacle and the smaller end being located within the visual closed end, and a visual component disposed within the visual housing; the viewing end of the viewing assembly is located within the smaller end of the viewing housing and faces the inspection channel.