Vaginal dilator for gynecological operation examination and use method of vaginal dilator

Abstract

The invention relates to the technical field of medical instruments, and provides a vaginal dilator for gynecologic operation examination and a using method thereof, the vaginal dilator for gynecologic operation examination comprises a holding piece, a lower dilating piece, an upper dilating piece, a connecting piece and a locking mechanism; the lower expansion piece is arranged on the holding piece; the upper expansion piece is arranged on the lower expansion piece; the connecting piece is arranged on the upper dilation piece and the lower dilation piece in a penetrating mode so that the upper dilation piece and the lower dilation piece can be movably connected, the upper dilation piece can rotate relative to the lower dilation piece, and then the opening and closing angle between the upper dilation piece and the lower dilation piece can be adjusted; at least part of the locking mechanism is located between the side wall of the upper expansion piece and the side wall of the lower expansion piece. According to the vaginal dilator for gynecological operation examination, the vaginal dilator can be opened, closed, locked and unlocked by one hand, so that the operation stability and reliability are improved.

Description

Technical Field

[0001] The present application relates to the technical field of medical devices, and in particular to a vaginal dilator for gynecological surgical examination and a method of using the same. Background Art

[0002] Vaginal dilators are often called "duckbill forceps". Vaginal dilators used for gynecological surgical examinations are medical devices used to dilate the vagina. Vaginal dilators are mainly used for routine gynecological examinations and surgeries; vaginal dilators can help doctors observe the vagina, cervix and other parts more clearly, and can detect and treat potential gynecological diseases.

[0003] Some vaginal dilators in the related art are generally held by one hand while a part of the vaginal dilator is adjusted to the desired dilation angle with the other hand and then fixed by screwing a bolt. If it is found during the operation that the opening and closing position of the vaginal dilator needs to be adjusted again, other tools need to be put down to adjust and fix the dilator, which is cumbersome to use and has poor stability, resulting in low working efficiency of the vaginal dilator. Summary of the invention

[0004] The embodiments of the present application provide a vaginal dilator for gynecological surgical examination and a method of using the same, which can improve the technical problem that the vaginal dilator in the related art requires the cooperation of both hands for adjustment operation, resulting in cumbersome operation and poor stability.

[0005] In a first aspect, an embodiment of the present application provides a vaginal dilator for gynecological surgical examination, comprising: Grip piece; A lower expansion member, disposed on the holding member; An upper expansion member, disposed on the lower expansion member; A connecting member, which is passed through the upper expander and the lower expander to flexibly connect the upper expander and the lower expander, so that the upper expander can rotate relative to the lower expander, thereby adjusting the opening and closing angle between the upper expander and the lower expander; and A locking mechanism, wherein at least a portion of the locking mechanism is located between the side wall of the upper expander and the side wall of the lower expander; the locking mechanism is used to respectively contact the side wall of the upper expander and the side wall of the lower expander when the upper expander is rotated relative to the lower expander to expand to a desired opening and closing angle, so that the upper expander is locked relative to the lower expander to maintain the current opening and closing angle, and is used to unlock when the upper expander needs to rotate relative to the lower expander to reduce the opening and closing angle, so that the upper expander can rotate relative to the lower expander to reduce the opening and closing angle.

[0006] The above technical solutions in the embodiments of the present application have at least the following technical effects: The vaginal dilator for gynecological surgical examination provided in the embodiment of the present application has a lower dilator arranged on the holding piece, and an upper dilator arranged on the lower dilator, which can make the upper dilator more stable and reliable when opening and closing the angle. The connecting piece is passed through the upper dilator and the lower dilator to make the upper dilator and the lower dilator movably connected, so that the upper dilator can expand and rotate relative to the lower dilator, and the opening and closing angle can be freely adjusted. The operability is large and the restriction on the opening and closing angle is reduced. At least part of the locking mechanism is located between the side wall of the upper dilator and the side wall of the lower dilator, and the lower dilator can be locked to maintain the current opening and closing angle when the upper dilator rotates relative to the lower dilator to expand to the desired opening and closing angle, and unlocked when the upper dilator needs to rotate relative to the lower dilator to reduce the opening and closing angle, thereby enabling the upper dilator to flexibly adjust its position, so that the opening and closing and locking of the vaginal dilator can be operated by one hand, the operation is simple and the volume is small, which helps to improve the accuracy and stability of the operation.

[0007] In some embodiments, the lower expansion member comprises: an expansion body, disposed on the gripping member; the connecting member is disposed through the upper expansion member and the expansion body to movably connect the upper expansion member and the expansion body; at least a portion of the locking mechanism is located between a side wall of the expansion body and a side wall of the upper expansion member; and A lower expansion part, one end of which is fixedly arranged on one end of the bottom of the expansion body, and the other end of which is used for being inserted into the vagina.

[0008] In some embodiments, the upper expansion piece has a through space, and the expansion body is at least partially located in the through space; a locking groove is opened on the outer wall of the expansion body, and the locking groove is located in the through space; the locking mechanism is located between the side wall of the upper expansion piece and the side wall of the lower expansion piece. The part is located in the locking groove.

[0009] In some embodiments, the locking groove is located on a side of the connecting member close to the lower expansion portion, an end of the locking groove away from the gripping member is a first end, an end of the locking groove close to the gripping member is a second end, and a depth of the first end is greater than a depth of the second end; The locking mechanism is used to move at least partially toward the second end to be locked between the inner side wall of the upper expander and the inner bottom wall of the locking groove when the upper expander rotates relative to the lower expander to expand to a desired opening and closing angle, so that the upper expander is locked relative to the lower expander, and to move at least partially toward the first end to unlock when the upper expander needs to rotate relative to the lower expander to reduce the opening and closing angle, so that the upper expander can rotate relative to the lower expander to reduce the opening and closing angle.

[0010] In some embodiments, the locking mechanism comprises: A locking member movably disposed in the locking groove; and a control component, disposed on the expansion body, a portion of the control component extending into the locking groove and located between the locking member and the second end, and another portion of the control component located in the external space; The locking member is used to be driven by the upper expander to move toward the first end when the upper expander rotates relative to the lower expander to expand the opening and closing angle, and to move toward the second end to be stuck between the inner side wall of the upper expander and the inner bottom wall of the locking groove when the upper expander rotates relative to the lower expander to reduce the opening and closing angle; The control component is used to drive the locking member to move toward the first end to unlock when the upper expander needs to rotate relative to the lower expander to reduce the opening and closing angle, so that the upper expander can rotate relative to the lower expander to reduce the opening and closing angle.

[0011] In some embodiments, an operating space is provided on the expansion body, and the control component comprises: A rotating member, the rotating member is rotatably disposed on the expansion body, one end of the rotating member extends into the locking groove, and the other end of the rotating member extends away from the locking groove into the operating space; A pushing member, movably disposed in the locking groove and located between the locking member and the second end; a top contact member, located in the locking groove and disposed on the rotating member; and A manipulation member, disposed on the other end of the rotating member located in the operation space; Wherein, the operating member is used to drive the top contact member to rotate through the rotating member when receiving the force of the operator, so that the top contact member pushes the locking member toward the first end through the pushing member to unlock.

[0012] In some embodiments, the locking mechanism also includes an elastic member, which is located in the locking groove and between the locking member and the first end, one end of the elastic member is connected to the inner wall of the first end, and the other end of the elastic member abuts against the locking member to provide a force to move the locking member toward the second end.

[0013] In some embodiments, the locking groove is located on a side of the connecting member away from the lower expansion portion, an end of the locking groove away from the gripping member is a third end, an end of the locking groove close to the gripping member is a fourth end, and a depth of the fourth end is greater than a depth of the third end; The locking mechanism is used to at least partially move from the fourth end toward the third end to lock the upper expander after the upper expander has completed rotation and expansion to the desired opening and closing angle relative to the lower expander or the upper expander has completed rotation and reduction of the opening and closing angle relative to the lower expander, and is used to at least partially move from the third end toward the fourth end to unlock the upper expander when the upper expander needs to rotate and expand to the desired opening and closing angle relative to the lower expander or the upper expander needs to rotate and reduce the opening and closing angle relative to the lower expander; And / or, the locking mechanism comprises: A locking component movably disposed in the locking groove; and A control member, disposed on the expansion body, a portion of the control member extends into the locking groove and is connected to the locking member, and another portion of the control member is located in the external space; Wherein, the control member is used to drive the locking member to move toward the third end to lock the upper expander after the upper expander has completed rotation and expansion to the desired opening and closing angle relative to the lower expander or after the upper expander has completed rotation and reduction of the opening and closing angle relative to the lower expander, and is used to allow the locking member to move toward the fourth end to unlock the upper expander when the upper expander needs to rotate relative to the lower expander to expand to the desired opening and closing angle or when the upper expander needs to rotate relative to the lower expander to reduce the opening and closing angle; And / or, a pulling space is provided on the expansion body, and the control member comprises: A pulling piece, one end of which is fixedly disposed on the locking component, and the other end of which extends away from the locking groove and into the pulling space; A fixing member, one end of which is fixed in the locking member, and the other end of which is connected to the pulling member; the fixing member is used to fix the pulling member on the locking member; The pulling member is used to move the locking member toward the third end to lock the upper expansion member when the operator applies force, and to allow the locking member to move toward the fourth end to unlock the upper expansion member when the operator does not apply force.

[0014] In some embodiments, the upper expansion member comprises: The matching body is arranged on the lower expansion member; the connecting member is respectively arranged through the matching body and the lower expansion member, and movably connects the matching body and the lower expansion member; at least part of the locking mechanism is located between the inner side wall of the matching body and the outer side wall of the lower expansion member; An adjusting portion, disposed on the mating body; the adjusting portion is used to drive the mating body to rotate, expand or shrink; and An upper expansion part, one end of which is fixedly arranged on the other side of the bottom of the matching body; the other end of the upper expansion part is inserted into the vagina.

[0015] In a second aspect, an embodiment of the present application provides a method for using a vaginal dilator for gynecological surgery examination, using the vaginal dilator for gynecological surgery examination described in any of the above embodiments, and the method for using the vaginal dilator for gynecological surgery examination includes: When the opening and closing angle of the vaginal dilator needs to be expanded, the holding member is held and force is applied to the upper dilator to rotate the upper dilator relative to the lower dilator to expand the opening and closing angle; when the opening and closing angle is expanded to the desired angle, force is stopped from being applied to the upper dilator, and the locking mechanism is respectively in contact with the side wall of the upper dilator and the side wall of the lower dilator, so that the upper dilator is locked relative to the lower dilator to maintain the current opening and closing angle; When the opening and closing angle of the vaginal dilator needs to be reduced, force is applied to the locking mechanism to unlock the locking mechanism, thereby allowing the upper dilator to rotate relative to the lower dilator to reduce the opening and closing angle.

[0016] The above technical solution in the embodiment of the present application has at least the following technical effects: the opening and closing angle between the upper expander and the lower expander can be accurately adjusted according to the needs, thereby providing a precise operating space for the inspection or treatment operation, which helps to improve the accuracy of the inspection and the effectiveness of the treatment. When the opening and closing angle is adjusted to the required size, the locking mechanism can lock the upper expander relative to the lower expander to prevent the patient from being injured due to accidental movement of the vaginal dilator, thereby improving stability, reducing operational errors caused by factors such as shaking of the vaginal dilator, and improving the working efficiency of the vaginal dilator. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0018] Figure 1 A schematic diagram of the structure of a vaginal dilator for gynecological surgical examination provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of the lower expansion member provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure of the expansion body and the locking mechanism provided in the embodiment of the present application; Figure 4 for Figure 3A local enlarged view of point A in FIG. Figure 5 A schematic diagram of the structure of the cooperation between the lower expansion member, the gripping member and the operating member provided in the embodiment of the present application; Figure 6 A schematic diagram of the structure of the locking component and the control component cooperating with each other provided in the embodiment of the present application; Figure 7 A schematic diagram of the structure of the upper expansion member provided in an embodiment of the present application.

[0019] Among them, the reference numerals in the figure are: 100. Vaginal dilator; 10. Grip; 20. Lower expansion member; 21. expansion body; 2101. locking groove; 21011. first end; 21012. second end; 21013. third end; 21014. fourth end; 22. lower expansion portion; 30. upper expansion member; 31. matching body; 32. adjustment portion; 33. upper expansion portion; 40. Connectors; 50. Locking mechanism; 51. Locking member; 52. Control member; 521. Rotating member; 522. Operating member; 523. Pushing member; 524. Top contact member; 53. Locking member; 54. Control member; 541. Pulling member; 542. Fixing member. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0022] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0023] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0024] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0025] In this application, "and / or" is only a description of the association relationship of associated objects, indicating that there can be three relationships; for example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0026] It should be noted that, in the present application, words such as "in some embodiments", "exemplarily", "for example", etc. are used to indicate examples, illustrations or descriptions. Any embodiment or design described in the present application as "in some embodiments", "exemplarily", "for example" should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "in some embodiments", "exemplarily", "for example", etc. is intended to present related concepts in a concrete way, meaning that specific features, structures or characteristics described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the above words in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0027] Vaginal dilators are commonly known as "duckbill forceps" and are a type of medical device used to dilate the vagina. Vaginal dilators are mainly used for routine gynecological examinations and surgeries; they can help doctors observe the vagina, cervix and other parts more clearly, and can detect and treat potential gynecological diseases.

[0028] Some vaginal dilators in the related art are generally held by one hand while a part of the vaginal dilator is adjusted to the desired dilation angle with the other hand and then fixed by screwing a bolt. If it is found during the operation that the opening and closing position of the vaginal dilator needs to be adjusted again, other tools need to be put down to adjust and fix the dilator, which is cumbersome to use and has poor stability, resulting in low working efficiency of the vaginal dilator.

[0029] Based on this, in order to improve the problem that the vaginal dilator in the related art requires the cooperation of both hands for adjustment operation, resulting in cumbersome operation and poor stability, the embodiment of the present application provides the following solution.

[0030] See also Figure 1 , the embodiment of the present application provides a vaginal dilator 100 for gynecological surgical examination, the vaginal dilator 100 comprises: a gripping member 10, a lower dilator 20, an upper dilator 30, a connecting member 40 and a locking mechanism 50, wherein; The lower expansion member 20 is disposed on the holding member 10 .

[0031] The upper expansion member 30 is disposed on the lower expansion member 20 .

[0032] The connecting member 40 is passed through the upper expander 30 and the lower expander 20 to flexibly connect the upper expander 30 and the lower expander 20 so that the upper expander 30 can rotate relative to the lower expander 20 to adjust the opening and closing angle between the upper expander 30 and the lower expander 20 .

[0033] At least a portion of the locking mechanism 50 is located between the side wall of the upper expander 30 and the side wall of the lower expander 20; the locking mechanism 50 is used to respectively interfere with the side wall of the upper expander 30 and the side wall of the lower expander 20 when the upper expander 30 is rotated relative to the lower expander 20 to expand to a desired opening and closing angle, so that the upper expander 30 is locked relative to the lower expander 20 to maintain the current opening and closing angle, and is used to unlock when the upper expander 30 needs to be rotated relative to the lower expander 20 to reduce the opening and closing angle, so that the upper expander 30 can be rotated relative to the lower expander 20 to reduce the opening and closing angle.

[0034] It can be understood that the gripping member 10 is a structure that can be gripped by a user, such as a handle, etc., but not limited thereto. The upper expander 30 is a component that can be rotated relative to the lower expander 20 to adjust the opening and closing, such as having an adjustment portion and a blade portion provided on the adjustment portion, and the blade portion can be any structure that can enter the vagina in the prior art. The lower expander 20 is a structure that can rotate with the upper expander 30, such as having an expansion body and a blade portion provided on the expansion body, etc., but not limited thereto. The connecting member 40 is a structure that can pass through the upper expander and the lower expander 20, such as an axis or an axle pin, etc., but not limited thereto. The locking mechanism 50 is a component that can lock the upper expander 30 relative to the lower expander 20 and unlock the upper expander 30 relative to the lower expander 20, such as a structure that is locked by a ball and controls the ball unlocking, etc., but not limited thereto.

[0035] As can be seen from the above, the embodiment of the present application provides a vaginal dilator 100 for gynecological surgical examination. The lower dilator 20 on the vaginal dilator 100 is arranged on the gripping member 10, and the upper dilator 30 is arranged on the lower dilator 20, which can make the upper dilator more stable and reliable at the opening and closing angle. The connecting member 40 is penetrated by the upper dilator 30 and the lower dilator 20 so that the upper dilator 30 and the lower dilator 20 are movably connected, so that the upper dilator 30 can expand and rotate relative to the lower dilator 20, and the opening and closing angle can be freely adjusted, which has great operability and reduces the limitation of the opening and closing angle. The locking mechanism 50 is controlled, and at least a portion of the locking mechanism 50 is located between the side wall of the upper expander 30 and the side wall of the lower expander 20. When the upper expander 30 is rotated relative to the lower expander 20 to expand to a desired opening and closing angle, the lower expander 20 can be locked to maintain the current opening and closing angle, and when the upper expander 30 needs to be rotated relative to the lower expander 20 to reduce the opening and closing angle, it is unlocked, thereby allowing the upper expander 30 to flexibly adjust its position, so that the vaginal dilator 100 can be opened, closed and locked by one hand, which is simple to operate and small in size, and helps to improve the accuracy and stability of the operation.

[0036] In some embodiments, please refer to Figure 1 and Figure 2 The lower expansion member 20 includes an expansion body 21 and a lower expansion portion 22. The expansion body 21 is disposed on the gripping member 10; the connecting member 40 is disposed through the upper expansion member 30 and the expansion body 21 to flexibly connect the upper expansion member 30 and the expansion body 21; at least part of the locking mechanism 50 is located between the side wall of the expansion body 21 and the side wall of the upper expansion member 30. One end of the lower expansion portion 22 is fixedly disposed at one end of the bottom of the expansion body 21, and the other end of the lower expansion portion 22 is used for insertion into the vagina.

[0037] It can be understood that the expansion body 21 is a structure that can be fixedly mounted on the grip 10 to maintain stability, such as a plate-like structure. The lower expansion portion 22 is a structure that can be inserted into the vagina, such as a blade, but is not limited thereto.

[0038] In this way, the upper expander 30 rotates relative to the expansion body 21 and the lower expander 22 arranged on the expansion body 21. After the rotation is completed, the lower expander 22 and the partial structure of the upper expander 30 are relative to each other and have an opening and closing angle. Then the lower expander 22 and the partial structure of the upper expander 30 are placed into the vagina. The upper expander 30 can be rotated to open and close to the desired angle. Under the action of the expansion body 21, it is more stable and reliable, and the upper expander 30 is prevented from shaking when it is rotated to open and close.

[0039] Optionally, in some embodiments, please refer to Figures 2 to 4 The upper expansion piece 30 has a through space, and the expansion body 21 is at least partially located in the through space; a locking groove 2101 is opened on the outer wall of the expansion body 21, and the locking groove 2101 is located in the through space; the locking mechanism 50 is located between the side wall of the upper expansion piece 30 and the side wall of the lower expansion piece 20 and is located in the locking groove 2101.

[0040] In this way, the locking groove 2101 opened on the outer wall of the expansion body 21 is convenient for accommodating a portion of the locking mechanism 50 located between the side wall of the upper expansion member 30 and the side wall of the lower expansion member 20, thereby reducing the space occupancy rate and reducing the volume, thereby improving the structural compactness of the overall components of the vaginal dilator 100.

[0041] Optionally, in some embodiments, please refer to Figures 2 to 4 The locking groove 2101 is located on one side of the connecting member 40 close to the lower expansion portion 22, the end of the locking groove 2101 away from the holding member 10 is the first end 21011, and the end of the locking groove 2101 close to the holding member 10 is the second end 21012, and the depth of the first end 21011 is greater than the depth of the second end 21012.

[0042] The locking mechanism 50 is used to move at least partially toward the second end 21012 to abut between the inner side wall of the upper expander 30 and the inner bottom wall of the locking groove 2101 when the upper expander 30 rotates relative to the lower expander 20 to expand to a desired opening and closing angle, so that the upper expander 30 is locked relative to the lower expander 20, and is used to move at least partially toward the first end 21011 to unlock when the upper expander 30 needs to rotate relative to the lower expander 20 to reduce the opening and closing angle, so that the upper expander 30 can rotate relative to the lower expander 20 to reduce the opening and closing angle.

[0043] In this way, when the upper expansion member 30 rotates relative to the lower expansion member 20 to expand to the desired opening and closing angle, the locking mechanism 50 is pushed toward the first end 21011 by the upper expansion member 30. Since the depth of the first end 21011 is greater than the depth of the second end 21012, the locking mechanism 50 rotates between the first end 21011 and the second end 21012, and the upper expansion member 30 is adjusted to adjust the opening and closing degree. After the adjustment is completed, the upper expansion member 30 no longer pushes the locking mechanism 50. Due to the action of gravity, the locking mechanism 50 at least partially moves toward the second end 21012 and moves to the inner side wall of the upper expansion member 30 and the locking recess. Between the inner bottom wall of the groove 2101, the upper expander 30 is locked relative to the lower expander 20; when the upper expander 30 needs to be rotated relative to the lower expander 20 to reduce the opening and closing angle, at least a portion of the locking mechanism 50 moves from the second end 21012 toward the first end 21011, so that the upper expander 30 can be unlocked relative to the expansion body 21, so that the upper expander 30 can be rotated relative to the lower expander 20 to reduce the opening and closing angle, and the upper expander 30 can be locked after the opening and closing angle is adjusted, without the need for manual locking, which can reduce the number of operating steps for users and help improve safety and convenience during use.

[0044] Optionally, in some embodiments, the depth of the locking groove 2101 gradually decreases from the first end 21011 toward the second end 21012, and the inner bottom wall of the locking groove 2101 is an inclined plane.

[0045] In this way, the inner bottom wall of the locking groove 2101 is an inclined plane, so that after the upper expander 30 is adjusted to a complete angle, the locking mechanism 50 can automatically move from one side of the inclined plane to the other side of the inclined plane through the action of gravity (because the inclined plane is from high to bottom, the locking mechanism 50 can automatically move from a high position to a low position to achieve the purpose of automatic locking), and there is no need to apply additional force to lock the upper expander 30, thereby reducing the complexity of the operation, and the automatic locking of the locking mechanism 50 improves flexibility.

[0046] Optionally, in some embodiments, see Figure 3 The locking mechanism 50 includes a locking member 51 and a control member 52 .

[0047] The locking member 51 is movably disposed in the locking groove 2101. The control component 52 is disposed on the expansion body 21, a portion of the control component 52 extends into the locking groove 2101 and is located between the locking member 51 and the second end 21012, and another portion of the control component 52 is located in the external space.

[0048] Among them, the locking member 51 is used to be driven by the upper expander 30 to move toward the first end 21011 when the upper expander 30 rotates relative to the lower expander 20 to expand the opening and closing angle, and to move toward the second end 21012 to be stuck between the inner side wall of the upper expander 30 and the inner bottom wall of the locking groove 2101 when the upper expander 30 rotates relative to the lower expander 20 to reduce the opening and closing angle; the control component 52 is used to drive the locking member 51 to move toward the first end 21011 to unlock when the upper expander 30 needs to rotate relative to the lower expander 20 to reduce the opening and closing angle, so that the upper expander 30 can rotate relative to the lower expander 20 to reduce the opening and closing angle.

[0049] It can be understood that the locking member 51 is a spherical structure that can lock the upper expansion member 30 relative to the lower expansion member 20 to maintain the current opening and closing angle. The control component 52 is a component that can push the locking member 51 to unlock, such as a push rod, etc., but is not limited thereto.

[0050] In this way, when the upper expansion member 30 is rotated relative to the lower expansion member 20 to expand to the desired opening and closing angle, the locking member 51 is pushed toward the first end 21011 by the upper expansion member 30. Since the depth of the first end 21011 is greater than the depth of the second end 21012, the locking member 51 rotates between the first end 21011 and the second end 21012, and the upper expansion member 30 is adjusted to adjust the opening and closing degree. After the adjustment is completed, the upper expansion member 30 no longer pushes the locking member 51. Due to the effect of gravity, the locking member 51 at least partially moves toward the second end 21012 and moves to be stuck between the inner side wall of the upper expansion member 30 and the inner bottom wall of the locking groove 2101, so that the upper expansion member 30 is locked relative to the lower expansion member 20. When the upper expander 30 needs to rotate relative to the lower expander 20 to reduce the opening and closing angle, the control component 52 controls at least a portion of the locking member 51 to move from the second end 21012 toward the first end 21011, so that the upper expander 30 can be unlocked relative to the expansion body 21, so that the upper expander 30 can be rotated relative to the lower expander 20 to reduce the opening and closing angle. The upper expander 30 can be locked after the opening and closing angle is adjusted, eliminating the manual locking operation process. When reducing the expansion angle, the locking member 51 can be unlocked only by using the control component 52. Compared with the prior art of adjusting and fixing by constantly adjusting the bolts, this saves time and reduces the operating steps, which helps to improve ease of use.

[0051] Optionally, in some embodiments, see Figure 4 and Figure 5 The expansion body 21 is provided with an operating space, and the control component 52 includes a rotating member 521, a pushing member 523, a top contact member 524 and a manipulation member 522, wherein: The rotating member 521 is rotatably disposed on the expansion body 21 , one end of the rotating member 521 extends into the locking groove 2101 , and the other end of the rotating member 521 extends into the operating space away from the locking groove 2101 .

[0052] The pushing member 523 is movably disposed in the locking groove 2101 and is located between the locking member 51 and the second end 21012 .

[0053] The top contact member 524 is located in the locking groove 2101 and is disposed on the rotating member 521 .

[0054] The operating member 522 is disposed on the other end of the rotating member 521 located in the operating space.

[0055] The operating member 522 is used to drive the top contact member 524 to rotate through the rotating member 521 when receiving the force of the operator, so that the top contact member 524 pushes the locking member 51 toward the first end 21011 through the pushing member 523 to unlock.

[0056] It can be understood that the rotating member 521 is a member capable of driving the top contact member 524 to rotate, and may be, for example, a shaft structure, etc., but is not limited thereto. The pushing member 523 is a structure capable of driving the locking member 51 to move under the action of the top contact member 524, and may be, for example, a strip bottom plate and a vertical rod vertically disposed on the strip bottom plate at one end, and an arc-shaped supporting sheet disposed at the other end of the vertical rod, etc., but is not limited thereto. The operating member 522 is a member capable of driving the rotating member 521 to rotate, and may be, for example, a hand lever or a cross-shaped rotating structure composed of two rods. The top contact member 524 is a structure capable of pushing the pushing member 523 upward, and may be, for example, a cam or a cylindrical structure with a protrusion, etc., but is not limited thereto; wherein, the top contact member 524 can rotate at an angle of 0 degrees to 90 degrees, and when the top contact member 524 rotates to the 90 degree position, it resists the pushing member 523 from moving toward the first end 21011; when the top contact member 524 gradually turns from 90 degrees to 0 degrees, the rotation direction gradually rotates from the bottom of the pushing member 523 to a position close to the second end 21012.

[0057] With such arrangement, when the upper expander 30 needs to rotate relative to the lower expander 20 to reduce the opening and closing angle, the user applies a certain force to the operating member 522. The force on the operating member 522 drives the top contact member 524 to rotate from 0 degrees to 90 degrees through the rotating member 521. When rotated to the 90-degree position, the top contact member 524 pushes the pushing member 523 upward. After receiving the pushing force, the pushing member 523 pushes the locking member 51 to move toward the first end 21011 to lock the upper expander 30. When the opening needs to be reduced, the operation steps are simpler and more convenient, and the operation is more labor-saving and time-saving.

[0058] Optionally, in some embodiments, see Figure 4The locking mechanism 50 also includes an elastic member, which is located in the locking groove 2101 and between the locking member 51 and the first end 21011. One end of the elastic member is connected to the inner wall of the first end 21011, and the other end of the elastic member abuts against the locking member 51, so as to provide a force to move the locking member 51 toward the second end 21012.

[0059] It can be understood that the elastic member is a structure that can abut against the locking member 51 to prevent the locking member 51 from retreating, for example, it can be a spring structure, etc., but is not limited thereto.

[0060] With such arrangement, the elastic member enables the locking member 51 to always have a tendency to move toward the second end 21012, which is beneficial for instantaneous locking after the upper expander 30 is rotated and expanded relative to the lower expander 20 to the desired opening and closing angle, thereby improving the stability of locking the upper expander 30.

[0061] Optionally, in some embodiments, see Figure 6 The locking groove 2101 is located on the side of the connecting member 40 away from the lower expansion portion 22, the end of the locking groove 2101 away from the holding member 10 is the third end 21013, and the end of the locking groove 2101 close to the holding member 10 is the fourth end 21014, and the depth of the fourth end 21014 is greater than the depth of the third end 21013.

[0062] The locking mechanism 50 is used to lock the upper expander 30 by at least partially moving from the fourth end 21014 toward the third end 21013 after the upper expander 30 has completed rotation and expansion to the desired opening and closing angle relative to the lower expander 20 or has completed rotation and reduction of the opening and closing angle relative to the lower expander 20, and is used to unlock the upper expander 30 by at least partially moving from the third end 21013 toward the fourth end 21014 when the upper expander 30 needs to rotate relative to the lower expander 20 to expand to the desired opening and closing angle or when the upper expander 30 needs to rotate relative to the lower expander 20 to reduce the opening and closing angle.

[0063] In this way, through the third end 21013 and the fourth end 21014 of the locking groove 2101, as well as the different depths, the locking of the locking mechanism 50 can be made more stable and reliable; after the upper expander 30 completes the rotation relative to the lower expander 20 to expand to the desired opening and closing angle, or after the upper expander 30 completes the rotation relative to the lower expander 20 to reduce the opening and closing angle, because the depth of the fourth end 21014 is greater than the depth of the third end 21013, at least part of the locking mechanism 50 needs to be moved toward the third end 21013 to lock the upper expansion part 33. When the upper expander 30 needs to be rotated relative to the lower expander 20 to expand to the desired opening and closing angle or when the upper expander 30 needs to be rotated relative to the lower expander 20 to reduce the opening and closing angle, at least part of the locking mechanism 50 needs to be moved from the third end 21013 to the fourth end 21014 to unlock the upper expander 30. The locking mechanism 50 can be unlocked or locked by controlling it with one hand, without the need for both hands to operate, thereby reducing the operating steps, making it easier to adjust the expansion size of the upper expander 30 and lock the upper expander 30, greatly reducing the situation of unstable grip during operation, so as to improve reliability and stability during use.

[0064] Optionally, in some embodiments, see Figure 6 The locking mechanism 50 includes a locking member 53 and a control member 54. The locking member 53 is movably disposed in the locking groove 2101. The control member 54 is disposed on the expansion body 21, a portion of the control member 54 extends into the locking groove 2101 and is connected to the locking member 53, the portion of the control member 54 located in the locking groove 2101 is located between the locking member and the third end, and the other portion of the control member 54 is located in the external space.

[0065] Among them, the control member 54 is used to drive the locking member 53 to move toward the third end 21013 to lock the upper expander 30 after the upper expander 30 completes the rotation and expansion to the desired opening and closing angle relative to the lower expander 20 or completes the rotation and reduction of the opening and closing angle relative to the lower expander 20, and is used to allow the locking member 53 to move toward the fourth end 21014 to unlock the upper expander 30 when the upper expander 30 needs to rotate relative to the lower expander 20 to expand to the desired opening and closing angle or when the upper expander 30 needs to rotate relative to the lower expander 20 to reduce the opening and closing angle.

[0066] It can be understood that the locking member 53 is a spherical structure that can lock the upper expander 30 relative to the lower expander 20 to maintain the current opening and closing angle, but is not limited thereto. The control member 54 is a member that can pull the locking member 53 to lock the upper expander 30 and stop pulling to unlock the upper expander 30, but is not limited thereto.

[0067] In this way, after the upper expander 30 completes the rotation relative to the lower expander 20 to expand to the desired opening and closing angle, or after the upper expander 30 completes the rotation relative to the lower expander 20 to reduce the opening and closing angle, because the depth of the fourth end 21014 is greater than the depth of the third end 21013, it is necessary to control the control member 54 so that the control member 54 drives the locking member 53 to move toward the third end 21013 to lock the upper expansion part 33. When the upper expander 30 needs to rotate relative to the lower expander 20 to expand to the desired opening and closing angle or when the upper expander 30 needs to rotate relative to the lower expander 20 to reduce the opening and closing angle, the control component 54 is stopped to control the locking component 53 to move from the third end 21013 to the fourth end 21014 to unlock the upper expander 30. The control component 52 can be operated by one hand to lock the upper expander 30 and stop the operation to unlock the upper expander 30. There is no need to use both hands for coordinated operation, which reduces the difficulty of operation and greatly reduces the instability of holding the vaginal dilator 100 during operation, so as to improve the stability when adjusting the opening and closing angle and locking the upper dilator.

[0068] Optionally, in some embodiments, see Figure 6 , a pulling space for a finger (such as a thumb) to be inserted is provided on the expansion body 21, and the pulling space is located on the side of the expansion body 21 facing away from the locking groove 2101. The control member 54 includes a pulling member 541 and a fixing member 542. One end of the pulling member 541 is fixedly disposed on the locking member 53, and the other end of the pulling member 541 extends into the pulling space facing away from the locking groove 2101. One end of the fixing member 542 is fixed in the locking member 53, and the other end of the fixing member 542 is connected to the pulling member 541; the fixing member 542 is used to fix the pulling member 541 to the locking member 53; The pulling member 541 is used to move the locking member 53 toward the third end 21013 to lock the upper expander 30 when subjected to force from the operator, and to allow the locking member 53 to move toward the fourth end 21014 to unlock the upper expander 30 when the operator does not apply force.

[0069] It can be understood that the pulling member 541 is a member capable of driving the locking member 53 to move toward the third end 21013, and can be, for example, a rope or a wire, but is not limited thereto. The rope or wire can be a smooth rope or wire. The fixing member 542 is a member capable of fixing the pulling member 541 to the locking member 53, and can be, for example, a ring structure, but is not limited thereto.

[0070] With such a configuration, after the upper expander 30 has completed rotation relative to the lower expander 20 to expand to the desired opening and closing angle, or after the upper expander 30 has completed rotation relative to the lower expander 20 to reduce the opening and closing angle, the user applies a force toward the third end 21013 to the pulling member 541 in the pulling space. Under the action of the force, the pulling member 541 drives the locking member 53 to move toward the third end 21013 through the control member 54 to lock the upper expander 30. On the contrary, when the upper expander 30 needs to rotate relative to the lower expander 20 to expand to the desired opening and closing angle, or when the upper expander 30 needs to rotate relative to the lower expander 20 to reduce the opening and closing angle, the force applied to the control member 54 is removed. At this time, the force The lock component 53 disappears, and the locking component 53 moves from the third end 21013 to the fourth section under the action of gravity or driven by the upper expander 30 to unlock the upper expander 30. The control component 52 can be operated by one hand to lock the upper expander 30 and stop the operation to unlock the upper expander 30. The locking and unlocking can be completed with one hand, which is convenient for medical staff to perform other auxiliary actions with the other hand when operating the vaginal dilator 100. The opening and closing angles between the upper expander 30 and the lower expander 20 can be accurately controlled, and can be flexibly adjusted according to actual needs. Whether it is expanded or reduced, it can be effectively locked, so that the vaginal dilator 100 can maintain a stable state during operation, which helps to improve the convenience of use during inspection.

[0071] Optionally, in some embodiments, see Figure 7 The upper expansion member 30 includes a matching body 31, an adjustment portion 32 and an upper expansion portion 33, wherein: The mating body 31 is arranged on the lower expansion piece 20; the connecting piece 40 is respectively passed through the mating body 31 and the lower expansion piece 20, and movably connects the mating body 31 and the lower expansion piece 20; at least part of the locking mechanism 50 is located between the inner wall of the mating body 31 and the outer wall of the lower expansion piece 20.

[0072] The adjusting portion 32 is disposed on the matching body 31 ; the adjusting portion 32 is used to drive the matching body 31 to rotate, expand or shrink.

[0073] One end of the upper expansion portion 33 is fixedly disposed on the other side of the bottom of the mating body 31 ; the other end of the upper expansion portion 33 is inserted into the vagina.

[0074] It can be understood that the mating body 31 is a structure that can drive the upper expansion part 33 to expand and reduce the opening and closing angle, for example, it can be a plate-shaped structure, etc., but not limited to this; the adjustment part 32 can be a component that the user needs to press or turn when rotating the mating body 31, for example, it can be a convex structure or a strip-shaped texture structure with a certain friction, etc., but not limited to this. The upper expansion part 33 can be a structure that can be inserted into the vagina, for example, it can be a blade, etc., but not limited to this.

[0075] With such a configuration, the user can rotate the matching body 31 by turning the adjustment portion 32, and the upper expansion portion 33 provided on the matching body 31 will also rotate with the matching body 31 to expand to a desired opening and closing angle. The desired opening can be freely adjusted according to the different characteristics of the patient, and the adjustment is more flexible and convenient. The matching body 31 is connected to the lower expansion member 20 by an axial pin through a connecting member 40, which can improve the stability during rotation, thereby preventing instability when adjusting the angle, thereby improving the working efficiency of the vaginal dilator 100.

[0076] See also Figures 1 to 7 The embodiment of the present application also provides a method for using a vaginal dilator for gynecological surgery examination, using the vaginal dilator 100 for gynecological surgery examination of any of the above embodiments, and the method for using the vaginal dilator for gynecological surgery examination includes: When the opening and closing angle of the vaginal dilator 100 needs to be expanded, the holder 10 is held and force is applied to the upper dilator 30 so that the upper dilator 30 rotates relative to the lower dilator 20 to expand the opening and closing angle; when the opening and closing angle is expanded to the desired angle, the force applied to the upper dilator 30 is stopped, and the locking mechanism 50 is respectively in contact with the side walls of the upper dilator 30 and the side walls of the lower dilator 20, so that the upper dilator 30 is locked relative to the lower dilator 20 to maintain the current opening and closing angle; When the opening and closing angle of the vaginal dilator 100 needs to be reduced, force is applied to the locking mechanism 50 to unlock the locking mechanism 50, thereby allowing the upper dilator 30 to rotate relative to the lower dilator 20 to reduce the opening and closing angle.

[0077] Such a configuration allows the user to accurately adjust the opening and closing angle between the upper expansion member 30 and the lower expansion member 20 according to specific operational requirements. For example, medical staff can adjust the opening and closing angle to a suitable degree according to the patient's physiological structure and examination requirements, thereby providing a precise operating space for the examination or treatment operation, which helps to improve the accuracy of the examination and the effectiveness of the treatment. When the opening and closing angle is adjusted to the required size, the locking mechanism 50 can lock the upper expansion member 30 relative to the lower expansion member 20 to prevent the patient from being injured due to accidental movement of the vaginal dilator 100, so as to improve the overall stability of the vaginal dilator 100 during operation and reduce operational errors caused by factors such as shaking of the vaginal dilator 100; not only can it be automatically locked after the expansion angle is expanded, but it can also be conveniently unlocked when the opening and closing angle needs to be reduced, which enables the vaginal dilator 100 to adapt well to different operation stages and requirements, and can be flexibly unlocked and readjusted, meeting the needs of complex and changeable actual operation scenarios, so as to improve the working efficiency of the vaginal dilator 100.

[0078] The above description is only a preferred embodiment of the present application and is not intended to limit the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims

1. A vaginal dilator for gynecological surgical examination, characterized in that: The vaginal dilator comprises: Grip piece; A lower expansion member, disposed on the holding member; An upper expansion member, disposed on the lower expansion member; A connecting member, which is passed through the upper expander and the lower expander to flexibly connect the upper expander and the lower expander, so that the upper expander can rotate relative to the lower expander, thereby adjusting the opening and closing angle between the upper expander and the lower expander; and A locking mechanism, wherein at least a portion of the locking mechanism is located between the side wall of the upper expander and the side wall of the lower expander; the locking mechanism is used to respectively contact the side wall of the upper expander and the side wall of the lower expander when the upper expander is rotated relative to the lower expander to expand to a desired opening and closing angle, so that the upper expander is locked relative to the lower expander to maintain the current opening and closing angle, and is used to unlock when the upper expander needs to rotate relative to the lower expander to reduce the opening and closing angle, so that the upper expander can rotate relative to the lower expander to reduce the opening and closing angle.

2. The vaginal dilator for gynecological surgical examination according to claim 1, characterized in that: The lower expansion member comprises: an expansion body, disposed on the gripping member; the connecting member is disposed through the upper expansion member and the expansion body to movably connect the upper expansion member and the expansion body; at least a portion of the locking mechanism is located between a side wall of the expansion body and a side wall of the upper expansion member; and A lower expansion part, one end of which is fixedly arranged on one end of the bottom of the expansion body, and the other end of which is used for being inserted into the vagina.

3. The vaginal dilator for gynecological surgical examination according to claim 2, characterized in that: The upper expansion piece has a through space, and the expansion body is at least partially located in the through space; a locking groove is opened on the outer wall of the expansion body, and the locking groove is located in the through space; the locking mechanism is located between the side wall of the upper expansion piece and the side wall of the lower expansion piece and is located in the locking groove.

4. The vaginal dilator for gynecological surgical examination according to claim 3, characterized in that: The locking groove is located on a side of the connecting member close to the lower expansion portion, an end of the locking groove away from the gripping member is a first end, an end of the locking groove close to the gripping member is a second end, and a depth of the first end is greater than a depth of the second end; The locking mechanism is used to move at least partially toward the second end to be locked between the inner side wall of the upper expander and the inner bottom wall of the locking groove when the upper expander rotates relative to the lower expander to expand to a desired opening and closing angle, so that the upper expander is locked relative to the lower expander, and to move at least partially toward the first end to unlock when the upper expander needs to rotate relative to the lower expander to reduce the opening and closing angle, so that the upper expander can rotate relative to the lower expander to reduce the opening and closing angle.

5. The vaginal dilator for gynecological surgical examination according to claim 4, characterized in that: The locking mechanism comprises: A locking member movably disposed in the locking groove; and a control component, disposed on the expansion body, a portion of the control component extending into the locking groove and located between the locking member and the second end, and another portion of the control component located in the external space; The locking member is used to be driven by the upper expander to move toward the first end when the upper expander rotates relative to the lower expander to expand the opening and closing angle, and to move toward the second end to be stuck between the inner side wall of the upper expander and the inner bottom wall of the locking groove when the upper expander rotates relative to the lower expander to reduce the opening and closing angle; The control component is used to drive the locking member to move toward the first end to unlock when the upper expander needs to rotate relative to the lower expander to reduce the opening and closing angle, so that the upper expander can rotate relative to the lower expander to reduce the opening and closing angle.

6. The vaginal dilator for gynecological surgical examination according to claim 5, characterized in that: An operating space is provided on the expansion body, and the control component comprises: A rotating member, the rotating member is rotatably disposed on the expansion body, one end of the rotating member extends into the locking groove, and the other end of the rotating member extends away from the locking groove into the operating space; A pushing member, movably disposed in the locking groove and located between the locking member and the second end; a top contact member, located in the locking groove and disposed on the rotating member; and A manipulation member, disposed on the other end of the rotating member located in the operation space; Wherein, the operating member is used to drive the top contact member to rotate through the rotating member when receiving the force of the operator, so that the top contact member pushes the locking member toward the first end through the pushing member to unlock.

7. The vaginal dilator for gynecological surgical examination according to claim 5, characterized in that: The locking mechanism also includes an elastic member, which is located in the locking groove and between the locking member and the first end. One end of the elastic member is connected to the inner wall of the first end, and the other end of the elastic member abuts against the locking member to provide a force to move the locking member toward the second end.

8. The vaginal dilator for gynecological surgical examination according to claim 3, characterized in that: The locking groove is located at a side of the connecting member away from the lower expansion portion, an end of the locking groove away from the holding member is a third end, an end of the locking groove close to the holding member is a fourth end, and a depth of the fourth end is greater than a depth of the third end; The locking mechanism is used to at least partially move from the fourth end toward the third end to lock the upper expander after the upper expander has completed rotation and expansion to the desired opening and closing angle relative to the lower expander or the upper expander has completed rotation and reduction of the opening and closing angle relative to the lower expander, and is used to at least partially move from the third end toward the fourth end to unlock the upper expander when the upper expander needs to rotate and expand to the desired opening and closing angle relative to the lower expander or the upper expander needs to rotate and reduce the opening and closing angle relative to the lower expander; And / or, the locking mechanism comprises: A locking component movably disposed in the locking groove; and A control member, disposed on the expansion body, a portion of the control member extends into the locking groove and is connected to the locking member, and another portion of the control member is located in the external space; Wherein, the control member is used to drive the locking member to move toward the third end to lock the upper expander after the upper expander has completed rotation and expansion to the desired opening and closing angle relative to the lower expander or after the upper expander has completed rotation and reduction of the opening and closing angle relative to the lower expander, and is used to allow the locking member to move toward the fourth end to unlock the upper expander when the upper expander needs to rotate relative to the lower expander to expand to the desired opening and closing angle or when the upper expander needs to rotate relative to the lower expander to reduce the opening and closing angle; And / or, a pulling space is provided on the expansion body, and the control member comprises: A pulling piece, one end of which is fixedly disposed on the locking component, and the other end of which extends away from the locking groove and into the pulling space; A fixing member, one end of which is fixed in the locking member, and the other end of which is connected to the pulling member; the fixing member is used to fix the pulling member on the locking member; The pulling member is used to move the locking member toward the third end to lock the upper expansion member when the operator applies force, and to allow the locking member to move toward the fourth end to unlock the upper expansion member when the operator does not apply force.

9. The vaginal dilator for gynecological surgical examination according to claim 1, characterized in that: The upper expansion member comprises: The matching body is arranged on the lower expansion member; the connecting member is respectively arranged through the matching body and the lower expansion member, and movably connects the matching body and the lower expansion member; at least part of the locking mechanism is located between the inner side wall of the matching body and the outer side wall of the lower expansion member; An adjusting portion, disposed on the mating body; the adjusting portion is used to drive the mating body to rotate, expand or shrink; and An upper expansion part, one end of which is fixedly arranged on the other side of the bottom of the matching body; the other end of the upper expansion part is inserted into the vagina.

10. A method for using a vaginal dilator for gynecological surgery examination, using the vaginal dilator for gynecological surgery examination according to any one of claims 1 to 9, characterized in that: The method comprises: When the opening and closing angle of the vaginal dilator needs to be expanded, the holding member is held and force is applied to the upper dilator to rotate the upper dilator relative to the lower dilator to expand the opening and closing angle; when the opening and closing angle is expanded to the desired angle, force is stopped from being applied to the upper dilator, and the locking mechanism is respectively in contact with the side wall of the upper dilator and the side wall of the lower dilator, so that the upper dilator is locked relative to the lower dilator to maintain the current opening and closing angle; When the opening and closing angle of the vaginal dilator needs to be reduced, force is applied to the locking mechanism to unlock the locking mechanism, thereby allowing the upper dilator to rotate relative to the lower dilator to reduce the opening and closing angle.

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