A locking and unlocking structure for an expander

Abstract

The present invention discloses a locking and unlocking structure for an expander, which belongs to the technical field of medical devices. The main technical solution is that it includes: a main body; an upper expander, the upper expander is rotatably connected to the main body; a locking member, the locking member is installed on the main body; a locking control member, the locking control member includes a plug-in plate and a control plate, the plug-in plate is installed on the locking member, the control plate is connected to the plug-in plate, and the control plate is provided with locking teeth; a locking connector, the locking connector is connected to the upper expander, the locking connector is connected to the locking member and the locking control member, and the locking connector is provided with a locking groove for accommodating the locking teeth. The present application realizes the function of locking the expander by the mutual cooperation between the locking teeth on the locking control member and the locking groove on the locking connector, thereby improving the diagnosis and treatment efficiency of gynecological diseases.

Description

Technical Field

[0001] The present invention relates to the technical field of medical devices, and in particular, mainly relates to a locking and unlocking structure for an expander. Background Art

[0002] A vaginal dilator is a medical device used for the diagnosis and treatment of gynecological diseases.

[0003] At present, vaginal dilators often adopt the form of two leaves or multiple leaves, generally including the dilator body and dilator leaves that can rotate relative to the body. During use, medical staff insert the dilator's expansion part into the vagina, and by operating the dilator leaves to open to a certain angle relative to each other, it is convenient to carry out diagnostic and treatment methods for different purposes such as photography and infrared irradiation.

[0004] However, in practice, existing dilators often require medical staff to maintain the same hand movement to keep them in the open state, which is inconvenient to use and reduces the efficiency of diagnosing gynecological diseases to a certain extent. Therefore, they need to be improved. Summary of the Invention

[0005] In view of the deficiencies of the prior art, the present invention provides a locking and unlocking structure for an expander.

[0006] The present invention discloses a locking and unlocking structure for an expander, comprising: a main body; an upper expander, which is rotatably connected to the main body; a locking member, which is installed on the main body; a locking control member, which includes a plug-in plate and a control plate, the plug-in plate is installed on the locking member, the control plate is connected to the plug-in plate, and a locking tooth is provided on the control plate; a locking connector, which is connected to the upper expander, the locking connector is connected to the locking member and the locking control member, and the locking connector is provided with a locking groove for accommodating the locking tooth.

[0007] Preferably, a limiting portion is provided on the locking member, and a plug-in slot is formed between the limiting portion and the locking member; the plug-in board is installed at the plug-in slot, and the locking connector is connected in the plug-in slot and is located between the locking member and the control board.

[0008] Preferably, the limiting portion includes a limiting plate and a limiting block, the limiting plate is connected to the locking member, and a distance is set between the limiting block and the locking member; a positioning block is provided on the plug-in board, and the positioning block is set between the limiting block and the locking member.

[0009] Preferably, the locking connector includes a locking belt and a mounting pin, the mounting pin is mounted on the upper expansion member, the locking belt is arranged in the insertion groove; and the locking groove is arranged on the locking belt.

[0010] Preferably, the limiting portion further includes an orienting plate having an arc-shaped surface, the plug-in plate is provided with an arc-shaped surface, and an arc-shaped gap is formed between the plug-in plate and the orienting plate; the locking belt passes through the arc-shaped gap.

[0011] Preferably, a limiting protrusion is provided on the limiting plate, a positioning groove is provided on the positioning block, and the limiting protrusion is arranged in the positioning groove.

[0012] Preferably, a control handle is provided on the control panel.

[0013] Preferably, a side expansion piece is rotatably connected to the main body, the upper expansion piece has a guide portion, the side expansion piece has a guiding portion, and the guiding portion is in contact with the guiding portion.

[0014] Preferably, the guide portion has an arcuate ridge, the guide portion has a guide arc surface, the arcuate ridge contacts the guide arc surface, and the guide portion is limited to being able to move only along a trajectory formed by real-time dynamic contact with the arcuate ridge.

[0015] Preferably, there are two guide parts, the two guide parts are mirror-image structures of each other, there are two side expanders, the two side expanders are mirror-image structures of each other, and each of the two guide parts is in contact with one guide part; the two side expanders are a left expander and a right expander, and the moving trajectory of the guide part on the guide part enables the left expander and the right expander to be separated from or approached relative to each other.

[0016] The beneficial effects of this application are:

[0017] When the locking teeth are located in the locking grooves, that is, when the expander is in the expanded state, the operator releases the upper expander, and the upper expander can generate a pulling force on the locking connector, so that the locking belt has a tendency to be withdrawn from the locking groove. The mutual engagement between the locking groove and the locking teeth enables the locking belt to remain in place, thereby keeping the position of the upper expander stable, achieving the purpose of locking. Therefore, the expander of the present invention can be kept in the open state without manual operation, which is more convenient and labor-saving.

[0018] When the lock needs to be released, the operator manually expands the gap between the control panel and the locking piece. At this time, the locking teeth are disengaged from the locking groove. Under the action of the internal pressure of the vagina on the upper expander, the locking belt can be pulled out of the insertion slot for a longer distance. The upper expander rotates toward the main body, thereby releasing the lock state of the expander, which is faster and more efficient, and improves the efficiency of disease diagnosis. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0020] Figure 1 This is a schematic diagram of the overall structure of this application;

[0021] Figure 2 This is a schematic diagram of the explosion structure of this application;

[0022] Figure 3 for Figure 2 A partial enlarged schematic diagram of point A in the middle;

[0023] Figure 4 is a schematic structural diagram of the upper expansion member, used to illustrate the guide portion;

[0024] Figure 5 is a schematic structural diagram of a locking member;

[0025] Figure 6 This is a schematic diagram of the structure of the closed state of this application;

[0026] Figure 7 for Figure 6 A partial enlarged schematic diagram of point B in the middle;

[0027] Figure 8 This is a structural diagram of the expanded state of this application.

[0028] Explanation of reference numerals: 01, filling assembly; 1, main body; 11, lower expansion wing; 12, gripping portion; 121, upper connecting hole; 122, side connecting hole; 2, upper expansion piece; 21, upper expansion wing; 22, connecting portion; 221, connecting column; 23, pressing portion; 231, mounting seat; 232, pushing member; 24, guiding portion; 241, arc-shaped ridge; 3, side expansion piece; 3a, left expansion piece; 3b, right expansion piece; 31, side expansion wing; 311, docking hole; 32, bending portion; 33, guiding portion; 331, Guide arc surface; 4. Locking member; 41. Limiting portion; 411. Limiting plate; 4111. Limiting protrusion; 412. Limiting block; 413. Orienting plate; 42. Plug-in slot; 421. Plug interface; 43. Support body; 5. Locking control member; 51. Plug-in plate; 511. Control hole; 512. Positioning block; 5121. Positioning groove; 513. Arc gap; 52. Control plate; 521. Locking tooth; 53. Control handle; 6. Locking connector; 61. Locking belt; 611. Locking groove; 62. Mounting pin. DETAILED DESCRIPTION

[0029] The following diagrams illustrate various embodiments of the present invention. For clarity, many practical details are included in the following description. However, it should be understood that these practical details are not intended to limit the present invention. In other words, in some embodiments of the present invention, these practical details are not essential. Furthermore, to simplify the drawings, some commonly used structures and components are depicted in a simplified schematic manner.

[0030] It should be noted that all directional indications such as up, down, left, right, front, back, etc. in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components in a certain specific posture as shown in the accompanying drawings. If the specific posture changes, the directional indication will also change accordingly.

[0031] In addition, in the present invention, descriptions such as "first" and "second" are only used for descriptive purposes and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish between parts or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in this field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] In order to further understand the content, features and effects of the present invention, the following embodiments are given as examples and described in detail with reference to the accompanying drawings:

[0033] Reference Figure 1 and Figure 2 , which is a locking and unlocking structure for an expander disclosed in an embodiment of the present invention, includes a main body 1, an upper expander 2, a side expander 3, a locking member 4, a locking control member 5 and a locking connector 6. The upper expander 2 and the side expander 3 are both rotatably mounted on the main body 1, and the locking member 4 is also mounted on the main body 1 for limiting the filling assembly 01 installed in the main body 1. The locking control member 5 is mounted on the locking member 4, and the locking connector 6 is connected between the upper expander 2 and the locking member 4; several side expanders 3 are provided. In this embodiment, two side expanders 3 are provided, namely a left expander 3a and a right expander 3b. The left expander 3a and the right expander 3b are mirror images of each other and are symmetrically arranged.

[0034] Reference Figure 1 and Figure 2 The main body 1 includes a lower expansion wing 11 and a gripping portion 12. The lower expansion wing 11 and the gripping portion 12 are integrally arranged. The lower expansion wing 11 is a long strip plate, and the gripping portion 12 is a shell-like structure. The gripping portion 12 is long in shape as a whole. The lower expansion wing 11 is connected to one end of the gripping portion 12. The gripping portion 12 is close to the end of the lower expansion wing 11 and is provided with an upper connecting hole 121 and a side connecting hole 122. There are two upper connecting holes 121 and two side connecting holes 122. Both the upper connecting hole 121 and the side connecting hole 122 are through holes. The upper connecting hole 121 is used to connect the upper expander 2, and the side connecting hole 122 is used to connect the side expander 3.

[0035] Reference Figure 2 and Figure 4 The upper expansion member 2 includes an upper expansion wing 21, a connecting portion 22, a pressing portion 23 and a guide portion 24. The upper expansion wing 21, the connecting portion 22, the pressing portion 23 and the guide portion 24 are integrally arranged. The upper expansion wing 21 is an arc-shaped long piece. The connecting portion 22 is arranged at one end of the upper expansion wing 21. The connecting portion 22 is a U-shaped structure. Connecting columns 221 are integrally arranged on the inner walls of both sides of the connecting portion 22. Each connecting column 221 is respectively inserted into one of the above-mentioned upper connecting holes 121, so that the upper expansion member 2 is rotatably connected to the main body 1 as a whole; the pressing portion 2 3 is connected between the two side plates of the connecting portion 22. When in use, the operator presses the pressing portion 23 with his finger to drive the upper expansion member 2 to rotate relative to the main body 1. Two mounting seats 231 are provided on the side of the pressing portion 23 facing the main body 1. The mounting seats 231 are provided with holes for mounting the locking connecting member 6. In addition, a pushing member 232 is provided on the side of the pressing portion 23 facing the main body 1. The pushing member 232 is a plate-shaped structure and is arranged between the two mounting seats 231. The pushing member 232 plays a guiding role for the locking connecting member 6.

[0036] Reference Figure 4 The guide portion 24 of the upper expansion member 2 is integrally connected between the connecting portion 22 and the pressing portion 23. The guide portion 24 is a strip-shaped rib. There are two guide portions 24. The two guide portions 24 are mirror images of each other and symmetrical to each other. The two guide portions 24 are respectively located on the inner walls on both sides of the connecting portion 22. The top edge of the guide portion 24 is an arc-shaped ridge 241 extending along its own length direction. The arc-shaped ridge 241 is a gentle arc-shaped transition structure, which serves as a track for guiding the side expansion member 3 to move. The arc-shaped ridge 241 is relative to the pressing portion. The surface of the pressing portion 23 and the surface of the connecting portion 22 are both arranged at an angle; each guide portion 24 extends from the surface of the pressing portion 23 to the surface of the connecting portion 22, and the distance W1 between the ends of the two guide portions 24 located on the surface of the pressing portion 23 is smaller than the distance W2 between the ends of the two guide portions 24 located on the surface of the connecting portion 22, so that the two guide portions 24 form an eight-shaped symmetrical structure. In addition, the width of the guide portion 24 gradually decreases from the pressing portion 23 to the connecting portion 22, and the end of the guide portion 24 located on the connecting portion 22 is a pointed end.

[0037] Reference Figure 1 and Figure 2 The side expansion member 3 includes a side expansion wing 31, a bending portion 32 and a guide portion 33. The side expansion wing 31, the bending portion 32 and the guide portion 33 are integrally arranged. The side expansion wing 31 is a long rod-shaped structure, the bending portion 32 is a bent rod-shaped structure, and the guide portion 33 is a block structure. The side expansion wing 31 is arranged at one end of the bending portion 32, and the guide portion 33 is arranged at the other end of the bending portion 32. A docking hole 311 is opened on the side expansion wing 31, and the docking hole 311 is a through hole. The docking hole 311 corresponds to a side connecting hole 122 on the gripping portion 12, so that the docking holes 311 on the left expansion member 3a and the right expansion member 3b respectively correspond to a side connecting hole 122 on the main body 1, and each corresponding docking hole 311 and the side connecting hole 122 are penetrated by a connecting pin, which enables the side expansion member 3 to be rotatably connected to the main body 1.

[0038] Reference Figure 2-Figure 4 The guide portion 33 has a spherical guide arc surface 331, and the guide arc surface 331 of each guide portion 33 contacts an arc ridge 241 to form a plane height pair, limiting the guide portion 33 to move only along the trajectory formed by the contact with the arc ridge 241, and the movement trajectory of the guide portion 33 on the arc ridge 241 enables the left expander 3a and the right expander 3b to separate or approach each other at an angle; when the upper expander 2 rotates, the guide portion 24 on the upper expander 2 can generate a thrust on the guide portion 33, pushing the guide portion 33 to move along the trajectory determined by the arc ridge 241, thereby driving the side expander 3 to rotate as a whole relative to the main body 1, so that the two side expanders 3 expand outward relative to each other, or approach each other.

[0039] Reference Figure 2 、 Figure 3 and Figure 5 The locking member 4 is a long strip plate-shaped structure, and a limiting portion 41 is provided on the surface of the locking member 4, which includes a limiting plate 411, a limiting block 412 and a directional plate 413. Among them, the limiting plate 411 is a U-shaped plate fixed as a whole on the surface of the locking member 4 away from the main body 1, and the limiting block 412 is integrally provided with the limiting plate 411. In this embodiment, four limiting blocks 412 are provided, and the limiting blocks 412 are convexly provided on the inner side of the limiting plate 411, and two limiting blocks 412 are respectively provided on the two sections of the limiting plate 411, and a distance is set between the limiting blocks 412 and the surface of the locking member 4; a plurality of limiting protrusions 4111 are also provided on the limiting plate 411. In this embodiment, there are two limiting protrusions 4111, and each limiting protrusion 41 11 corresponds to the position of a limit block 412, and the limit protrusion 4111 has an arc-shaped surface; a semi-closed structure of the plug-in groove 42 is formed between the limit plate 411, the limit block 412 and the surface of the locking member 4, and the plug-in groove 42 forms a plug-in interface 421 at the U-shaped opening of the limit plate 411, and the directional plate 413 is arranged at a position opposite to the limit plate 411 and the plug-in interface 421, and is located on the inner side of the limit plate 411, and the directional plate 413 is integrally arranged with the limit plate 411 and the locking member 4, and the directional plate 413 has an arc-shaped surface, and the arc-shaped surface of the directional plate 413 is concave toward the locking member 4, which plays a guiding role. In addition, a support body 43 is fixed on the locking member 4, and the support body 43 is arranged at a position corresponding to the plug-in interface 421.

[0040] Reference Figure 3 and Figure 5 The locking control member 5 is made of elastic plastic material. The locking control member 5 includes a plug-in plate 51, a control plate 52 and a control handle 53. The plug-in plate 51 is a long strip plate. The plug-in plate 51 is arranged at the plug-in slot 42. The edge of the surface of the plug-in plate 51 facing the locking member 4 is provided with a protrusion, so that when the plug-in plate 51 is inserted into the plug-in slot 42, the plug-in plate 51 can maintain a certain distance from the locking member 4; a plurality of positioning blocks 512 are integrally provided on the plug-in plate 51, and the number of the positioning blocks 512 is the same as the number of the limit blocks 412. In this embodiment, four positioning blocks 512 are provided, and two are provided on each of the two opposite long edges of the plug-in board 51. Each positioning block 512 corresponds to a limit block 412 and is arranged between the limit block 412 and the locking member 4 to prevent the plug-in board 51 from falling out of the plug-in slot 42. In addition, two of the positioning blocks 512 are provided with positioning grooves 5121, and the two limit protrusions 4111 on the limit plate 411 are respectively arranged in the two positioning grooves 5121, so that the plug-in board 51 can maintain a stable position in the plug-in slot 42.

[0041] Reference Figure 3 、 Figure 6 and Figure 7 , a control hole 511 is opened on the plug board 51, and the control hole 511 is long and runs through the two sides of the plug board 51. The control board 52 is a long strip board. The control board 52 is installed at the control hole 511, and one end of the control board 52 is integrally connected to one end of the control hole 511. A gap is set between the control board 52 and the edge of the control hole 511, so that the control board 52 can be elastically deformed relative to the plug board 51 when a force is applied; when the control board 52 is not applied, the control board 52 contacts the support body 43, so that there is always a distance between the control board 52 and the locking member 4, and the control board A plurality of locking teeth 521 are provided on the surface of 52 facing the locking member 4, and the plurality of locking teeth 521 are continuously arranged in a serrated shape. In addition, the control handle 53 is installed on the side of the control board 52 away from the surface of the locking member 4, and is located at the end opposite to the connecting portion 22 of the control board 52 and the plug-in board 51. The control handle 53 is fixed integrally with the control board 52 through a connecting rod; in addition, an arc-shaped surface is provided at the end of the plug-in board 51 close to the directional plate 413, so that an arc-shaped gap 513 is formed between the plug-in board 51 and the directional plate 413, and the arc-shaped transition gap can play a guiding role.

[0042] Reference Figure 3 、 Figure 6 and Figure 7 The locking connection piece 6 includes a locking belt 61 and a mounting pin 62. The locking belt 61 is a long strip structure. The locking belt 61 is made of elastic plastic material. One end of the locking belt 61 is fixedly provided with a mounting pin 62. The mounting pin 62 is a cylindrical structure. The two ends of the mounting pin 62 are respectively passed through the holes on the two mounting seats 231, so that the mounting pin 62 is rotatably connected to the upper expansion piece 2. A locking groove 611 is provided on one surface of the locking belt 61. There are multiple locking grooves 611 evenly arranged along the length direction of the locking belt 61. The multiple locking grooves 611 form a serrated structure. The end of the locking belt 61 away from the mounting pin 62 is inserted between the control board 52 and the locking piece 4 from the arc gap 513 between the directional plate 413 and the end of the plug-in board 51.

[0043] The working principle and beneficial effect of the present invention are as follows: Figure 6-8 When inspecting the vagina through the dilator, the operator presses the upper dilator 2, causing it to rotate relative to the main body 1. At the same time, the upper dilator 2 can drive the two side dilators 3 to work together, putting the dilator in an expanded state. During this process, the upper dilator 2 can push the locking connector 6 to move, continuously pushing the locking belt 61 into the control groove between the locking member 4 and the plug-in plate 51, and causing the locking groove 611 to engage with the locking tooth 521 on the control plate 52;

[0044] When the locking groove 611 is engaged with the locking tooth 521, that is, when the expander is in the expanded state, the operator releases the upper expander 2, and the upper expander 2 can generate a pulling force on the mounting pin 62, so that the locking belt 61 tends to be withdrawn from the locking groove 611. The mutual engagement relationship between the locking groove 611 and the locking tooth 521 enables the locking belt 61 to remain in place, thereby keeping the position of the upper expander 2 stable and achieving the purpose of locking. Therefore, the expander of the present invention can be kept in the open state without manual operation, which is more convenient and labor-saving.

[0045] When the lock needs to be released, the operator pulls the control handle 53 by hand to expand the gap between the control panel 52 and the locking member 4. At this time, the locking tooth 521 is disengaged from the locking groove 611. Under the action of the internal pressure of the vagina, the upper expander 2 can be pulled out of the insertion slot 42 for a longer distance. The upper expander 2 rotates in the direction close to the main body 1, thereby releasing the lock state of the expander, which is faster and more efficient, thereby improving the efficiency of disease diagnosis.

[0046] The above is merely an embodiment of the present invention and is not intended to limit the present invention. It will be apparent to those skilled in the art that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be included within the scope of the claims of the present invention.

Claims

1. A locking and unlocking structure for an expander, characterized in that: include: Subject (1); an upper expansion member (2), the upper expansion member (2) being rotatably connected to the main body (1); A locking member (4), the locking member (4) being mounted on the main body (1), the locking member (4) being provided with a limiting portion (41), a plug-in slot (42) being formed between the limiting portion (41) and the locking member (4), the limiting portion (41) comprising a limiting plate (411) and a limiting block (412), the limiting plate (411) being connected to the locking member (4), a distance being provided between the limiting block (412) and the locking member (4), the limiting portion (41) further comprising an orientation plate (413), the orientation plate (413) having an arc-shaped surface; A locking control member (5), the locking control member (5) comprising a plug-in board (51) and a control board (52), the plug-in board (51) being mounted on the locking member (4) and mounted at the plug-in slot (42), the plug-in board (51) being provided with a positioning block (512), the positioning block (512) being arranged between the limit block (412) and the locking member (4), the plug-in board (51) being provided with an arcuate surface, an arcuate gap (513) being formed between the plug-in board (51) and the directional board (413), the control board (52) being connected to the plug-in board (51), and the control board (52) being provided with a locking tooth (521); A locking connector (6), wherein the locking connector (6) is connected to the upper expansion member (2), the locking connector (6) is connected to the locking member (4) and the locking control member (5), the locking connector (6) is connected to the plug-in slot (42) and is located between the locking member (4) and the control panel (52), the locking connector (6) comprises a locking belt (61) and a mounting pin (62), the mounting pin (62) is mounted on the upper expansion member (2), the locking belt (61) is arranged in the plug-in slot (42); a locking groove (611) for accommodating the locking tooth (521) is provided on the locking connector (6), the locking groove (611) is provided on the locking belt (61), and the locking belt (61) passes through the arc gap (513).

2. The locking and unlocking structure for an expander according to claim 1, characterized in that: A limiting protrusion (4111) is provided on the limiting plate (411), a positioning groove (5121) is provided on the positioning block (512), and the limiting protrusion (4111) is arranged in the positioning groove (5121).

3. The locking and unlocking structure for an expander according to any one of claims 1-2, characterized in that: A control handle (53) is provided on the control panel (52).

4. The locking and unlocking structure for an expander according to any one of claims 1-2, characterized in that: A side expansion member (3) is rotatably connected to the main body (1), the upper expansion member (2) has a guide portion (24), and the side expansion member (3) has a guide portion (33), and the guide portion (33) is in contact with the guide portion (24).

5. The locking and unlocking structure for an expander according to claim 4, characterized in that: The guide portion (24) has an arcuate ridge (241), the guide portion (33) has a guide arc surface (331), the arcuate ridge (241) contacts the guide arc surface (331), and the guide portion (33) is limited to being able to move only along a trajectory formed by real-time dynamic contact with the arcuate ridge (241).

6. The locking and unlocking structure for an expander according to claim 5, characterized in that: Two guide portions (24) are provided, and the two guide portions (24) are mirror images of each other; two side expansion members (3) are provided, and the two side expansion members (3) are mirror images of each other; and the two guide portions (33) are in contact with one guide portion (24) respectively; The two side expansion members (3) are a left expansion member (3a) and a right expansion member (3b), and the movement track of the guide portion (33) on the guide portion (24) enables the left expansion member (3a) and the right expansion member (3b) to be separated from or approached relative to each other.

Images