Vaginal dilator

Abstract

The utility model discloses a vaginal dilator which comprises a shell with an operation cavity, at least six dilation wings arranged in the operation cavity, and a control assembly connected with the dilation wings and installed in the shell, one end of each dilation wing extends in the direction away from the operation cavity, and the dilation wings can form a round sampling part in an enclosing mode. A round sampling cavity is formed in the sampling part, the center of the sampling cavity and the center of the operation cavity are located on the same straight line, the expansion wings can be controlled by the control assembly to reciprocate in the operation cavity, when the expansion wings move away from the cavity wall, the diameter of the sampling cavity is gradually reduced, and when the expansion wings move close to the cavity wall, the diameter of the sampling cavity is gradually reduced. The diameter of the sampling cavity is gradually increased, after the diameter of the sampling cavity is increased, a working gap is formed between every two adjacent dilation wings, the dilation wings are opened to achieve the purpose of dilating the vagina, and the working gaps distributed around the center of the sampling cavity can comprehensively expose the vagina, reduce the rotation frequency of the dilator and relieve discomfort of a user.

Description

Technical Field

[0001] The utility model belongs to the technical field of medical devices, and particularly relates to a vaginal dilator. Background Art

[0002] Vaginal dilators are commonly used medical devices for gynecological examinations or surgeries. Currently, medical staff typically use a duckbill-style two-wing dilator to dilate the vagina. This two-wing dilator consists of a flat duckbill-shaped upper wing and a lower wing, which are hingedly connected. Because the upper and lower wings are flat and have a small curvature, the dilator's dilation effect is poor, limiting the range available for observation or sampling. Furthermore, the flat upper and lower wings easily obstruct the lesion. With this limited range, medical staff need to repeatedly rotate the vaginal dilator to more comprehensively observe or sample the vagina. However, repeatedly rotating the two-wing dilator can exacerbate women's aversion to the foreign body sensation and increase pain for the user. Utility Model Content

[0003] In view of the technical problem that the two-wing dilator in the existing technology has poor expansion effect, resulting in a limited observation or sampling range. If a more comprehensive observation or sampling of the vagina is required, the dilator needs to be rotated multiple times, which aggravates the foreign body sensation of female users and increases the pain of users, the present utility model provides a vaginal dilator.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A vaginal dilator comprises a shell having an operating chamber, at least six expansion wings arranged in the operating chamber and extending at one end away from the operating chamber, and a control assembly connected to the expansion wings and installed in the shell, wherein the multiple expansion wings can enclose a circular sampling portion, and a circular sampling chamber is formed inside the sampling portion, the center of the sampling chamber and the center of the operating chamber are on the same straight line, and the control assembly can control the expansion wings to move back and forth in the operating chamber in a direction away from or close to the cavity wall of the operating chamber, when the expansion wings move away from the cavity wall, the diameter of the sampling chamber gradually decreases, and when the expansion wings move toward the cavity wall, the diameter of the sampling chamber gradually increases. After the diameter of the sampling chamber increases, a working gap is formed between every two adjacent expansion wings; the control assembly includes a positioning mechanism for locking the position of the expansion wings when the diameter of the sampling chamber is maximum.

[0006] Furthermore, the control component also includes a gear ring movably installed in the shell, a plurality of gears arranged in the shell and at intervals and meshing with the gear ring, a rack connected to the plurality of gears in a one-to-one correspondence, and a control handle connected to the outer wall of the gear ring and with one end exposed to the outside of the shell, the height of the gear is higher than the height of the gear ring, so that the lower part of the gear meshes with the gear ring and the upper part meshes with the rack; the plurality of racks are connected to the expansion wings in a one-to-one correspondence, and holding the control handle can control the rotation of the gear ring to drive the gear to rotate, thereby driving the rack to move back and forth in the shell.

[0007] Furthermore, the housing includes a lower shell and an upper shell connected by bolts and arranged symmetrically, an annular cavity penetrating the lower shell is provided inside the lower shell, and the annular cavities in the lower shell and the upper shell can be assembled into the operating chamber;

[0008] The lower shell is provided with an annular groove which is recessed toward the bottom surface of the lower shell and is arranged concentrically with the annular cavity. The gear ring is slidably mounted on the inner wall of the annular groove. All the gears are rotatably arranged in the annular groove, and all the gears can rotate around their own axes. The lower shell is provided with a notch which is communicated with the annular groove and is used to accommodate the control handle, and the control handle can move back and forth in the notch.

[0009] Furthermore, the lower shell and the upper shell are both provided with a plurality of slide grooves corresponding to the positions of the racks, and one end of the slide groove is connected to the operating cavity, and the rack is slidably assembled in the slide groove.

[0010] Furthermore, the positioning mechanism includes a first positioning hole and a second positioning hole respectively arranged on the inner side wall of the notch, and two positioning clamping shafts arranged on the control handle and whose positions correspond to the first positioning hole and the second positioning hole respectively, and the positioning clamping shafts can be clamped with the first positioning hole or the second positioning hole.

[0011] Furthermore, the outer surface of the control handle is covered with a rear silicone anti-slip layer.

[0012] Furthermore, the expansion wing includes an inclined section and a straight section with one end fixed to the inclined section. All the inclined sections can enclose a trumpet-shaped first cavity, and all the straight sections can enclose a sampling cavity of equal diameter. The end of the first cavity with the smallest cross-sectional area is connected to the sampling cavity, and the end with the largest cross-sectional area is located above the shell.

[0013] Furthermore, all the straight sections are arc-shaped, and the other end of each straight section is fixedly connected to a closing portion, and the closing portion is a variable cross-section structure with a cross-sectional area gradually decreasing from the fixed end to the non-fixed end. Multiple closing portions can be enclosed to form a trumpet-shaped second cavity, and the non-fixed end surface of each closing portion is covered with a flexible layer.

[0014] In summary, the beneficial effects of the present invention are as follows: 1. When entering the vagina, the six expansion wings can gather together to reduce the diameter of the sampling cavity (i.e., the outer diameter of the sampling part is reduced). When such a sampling part enters the vagina, the female's foreign body experience is reduced, thereby reducing the user's pain. After entering the vagina, through the control component, the multiple expansion wings can be operated to move toward the wall of the operating cavity, and the multiple expansion wings are expanded, the diameter of the sampling part increases, and the expansion purpose is achieved. Moreover, there is a working gap between each two adjacent expansion wings, which can expose the vaginal condition more comprehensively, reduce obstruction, and facilitate inspection or surgery. Moreover, with a more comprehensive field of view, the number of times the expander is rotated can be reduced, which can reduce the user's foreign body sensation and pain. 2. When the control component controls the expansion wings to open or retract, it is through the meshing of the gear ring and the gear, and then through the meshing of the gear and the rack for transmission. The advantage is that it can maintain a constant transmission ratio, reduce errors, and be more stable when expanding each expansion wing. 3. The control handle is outside the shell, which is convenient for operating the expansion wing activities. When the movable expansion wings reach their expanded state, the positioning mechanism locates the control handle and locks the expansion wings, allowing them to remain in their expanded state, maximizing the diameter of the sampling cavity for easy inspection or sampling. The expansion wings, after converging and shrinking the sampling area, can also be positioned to prevent accidental opening. Furthermore, the snap-fit ​​mechanism is simple and easy to operate, allowing for quick release and snap-fit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of a vaginal dilator provided by the utility model.

[0016] Figure 2 It is a structural diagram of the control component in the utility model.

[0017] In the figure, 100-shell, 110-lower shell, 111-annular cavity, 112-annular groove, 113-notch, 120-upper shell, 130-operating chamber, 200-expansion wing, 210-inclined section, 211-first chamber, 220-straight section, 220A-sampling part, 221-closing part, 300-control component, 310-gear ring, 320-gear, 330-rack, 340-control handle, 350-positioning card shaft. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to specific drawings.

[0019] See also Figure 1 The present invention provides a vaginal dilator comprising a housing 100 having an operating cavity 130, at least six equally spaced expansion wings 200 disposed within the operating cavity 130 and having one end extending away from the operating cavity 130, and a control assembly 300 connected to the expansion wings 200 and mounted within the housing 100. The expansion wings 200 enclose a circular sampling portion 220A, which defines a circular sampling cavity within the sampling portion 220A. The center of the sampling cavity is aligned with the center of the operating cavity 130. The control assembly 300 controls the expansion wings 200 to reciprocate within the operating cavity 130, moving away from or toward the cavity wall. When the expansion wings 200 move away from the cavity wall, the diameter of the sampling cavity gradually decreases around the center. When the expansion wings 200 move toward the cavity wall, the diameter of the sampling cavity gradually increases around the center. As the sampling cavity diameter increases, a working gap is formed between each pair of adjacent expansion wings 200. The control assembly 300 includes a positioning mechanism for locking the expansion wings 200 in position when the sampling cavity diameter is at its maximum. During use, all expansion wings 200 converge, reducing the diameter of the circular sampling cavity. Specifically, the outer diameter of the circular sampling portion 220A decreases, minimizing the foreign body sensation and facilitating entry into the user's vagina. Once inside, the control assembly 300 is activated, causing the expansion wings 200 to expand around the cavity center toward the cavity wall. This increases the diameter of the sampling cavity enclosed by the expansion wings 200, thereby dilating the vagina. After the expansion is completed, a working gap is formed between each two adjacent expansion wings 200, and medical staff can examine or perform surgery on the patient's vagina from the working gap. Several working gaps are distributed around the center of the operating cavity 130, which can allow the vagina to have a more comprehensive exposure range, reduce the obstruction of the vagina, and thus reduce the number of times the dilator is turned, effectively reducing women's rejection of the foreign body sensation.

[0020] The housing 100 includes a lower shell 110 and an upper shell 120 connected by bolts and arranged symmetrically. The lower shell 110 is provided with an annular cavity 111 extending therethrough. The annular cavities 111 in the lower shell 110 and the upper shell 120 can be assembled to form the operating chamber 130. The screwed upper shell 120 and lower shell 110 are easily disassembled, facilitating maintenance of the control assembly 300 installed therein.

[0021] See also Figure 2The control assembly 300 also includes a gear ring 310 movably mounted in the housing 100, a plurality of gears 320 arranged in the housing 100 and arranged at intervals and meshing with the gear ring 310, a rack 330 connected to the plurality of gears 320 in a one-to-one correspondence, and a control handle 340 connected to the outer wall of the gear ring 310 and with one end exposed to the outside of the housing 100. The lower shell 110 is provided with an annular groove 112 which is recessed toward the bottom surface of the lower shell 110 and arranged concentrically with the annular cavity 111. The gear ring 310 is slidably mounted on the inner wall of the annular groove 112. All the gears 320 are rotatably disposed in the annular groove 112, and all the gears 320 can rotate around their own axes. The height of the gear 320 is higher than the height of the gear ring 310, so that the lower part of the gear 320 meshes with the gear ring 310 and the upper part meshes with the rack 330. The racks 330 are connected to the expansion wings 200 in a one-to-one relationship. The expansion wings 200 can be fixedly or threadedly connected to the racks 330. Both the lower housing 110 and the upper housing 120 are provided with a plurality of slots corresponding to the positions of the racks 330. One end of each slot is connected to the operating chamber 130, and the other end is connected to the exterior. The racks 330 are slidably assembled within the slots. The lower housing 110 is provided with a notch 113 that communicates with the annular groove 112 and is configured to accommodate the control handle 340. The control handle 340 can reciprocate within the notch 113. Medical personnel operate the control handle 340 to control the rotation of the gear ring 310, causing the gear 320 meshing with the gear ring 310 to rotate about its own axis, thereby driving the rack 330 to reciprocate along the slideway within the housing 100. This ultimately enables the expansion wings 200 to reciprocate within the operating chamber 130, thereby increasing the outer diameter of the sampling portion 220A to expand or reduce the outer diameter of the sampling portion 220A. The advantages of using the gear 320 to achieve movement of the expansion wings 200 are: the gear 320 material, after heat treatment and other process treatments, can resist wear and fatigue, ensuring stable operation. The gear 320 transmission can also maintain a constant transmission ratio, reducing transmission errors and improving the stability of the expansion wings 200 during expansion.

[0022] The outer surface of the control handle 340 is covered with a rear silicone anti-skid layer. When the control handle 340 is operated, the silicone anti-skid layer plays an anti-skid role, making the grip more stable and firm, and not easy to slip.

[0023] The positioning mechanism includes a first positioning hole and a second positioning hole respectively provided on the inner wall of the notch 113, and two positioning card shafts 350 provided on the control handle 340 and corresponding to the first positioning hole and the second positioning hole respectively. The positioning card shafts 350 can be engaged with the first positioning hole or the second positioning hole, so that the circular sampling cavity can be locked in the state of maximum diameter or minimum diameter. After the maximum diameter state is locked, observation and sampling are convenient, and after the minimum diameter state is locked, the expansion wing 200 is prevented from accidentally opening and expanding to cause inconvenience.

[0024] The expansion wing 200 comprises an inclined section 210 and a straight section 220 fixedly connected to the inclined section 210 at one end. The inclined sections 210 collectively form a trumpet-shaped first cavity 211. The straight sections 220 collectively form a uniformly sized sampling cavity. The end of the first cavity 211 with the smallest cross-sectional area communicates with the sampling cavity, while the end with the largest cross-sectional area is located above the housing 100. When dilating the vagina, the sampling cavity enters the vagina first. The trumpet-shaped first cavity 211 is open, facilitating the smooth entry of a sampling instrument from outside the vagina.

[0025] All the straight sections 220 are in the shape of an arc, and the outer surface of each expansion wing 200 is smoother and rounder, which can reduce the pain of women during expansion. And the other end of each straight section 220 is fixedly connected to a closing portion 221. The closing portion 221 is a variable cross-section structure with a gradually decreasing cross-sectional area from the fixed end to the non-fixed end. Multiple closing portions 221 can be enclosed to form a trumpet-shaped second cavity. In the trumpet-shaped second cavity, the end with the smallest cavity diameter is far away from the sampling cavity. Therefore, after the closing portion 221 is enclosed, the end with the smallest outer diameter enters the vagina first. This design allows the dilator to enter the vagina more smoothly. The non-fixed end surface of each closing portion 221 is covered with a flexible layer. The flexible layer can be made of materials such as silicone or rubber. When the vagina is expanded, if the front end accidentally touches the user's body before entering, the flexible contact will make the experience more comfortable.

[0026] This vaginal dilator features six expansion wings 200 that converge upon entry into the vagina, reducing the diameter of the sampling cavity (i.e., the outer diameter of the sampling portion 220A). This reduces the foreign body sensation felt by women when the sampling portion 220A enters the vagina, thereby alleviating user pain. Once deeper into the vagina, the control assembly 300 moves the expansion wings 200 toward the wall of the operating cavity 130, expanding them and increasing the diameter of the sampling portion 220A to achieve dilation. Furthermore, a working gap exists between adjacent expansion wings 200, providing a more comprehensive view of the vagina, minimizing obstruction and facilitating inspection or surgery. Furthermore, the more comprehensive field of view reduces the number of dilator rotations required, alleviating both the foreign body sensation and user pain. Second, when the control component 300 controls the expansion wings 200 to open or retract, it does so by meshing the gear ring 310 with the gear 320, and then by meshing the gear 320 with the rack 330. This has the advantage of maintaining a constant transmission ratio, reducing errors, and making the expansion of each expansion wing 200 more stable. Third, the control handle 340 is located outside the housing 100, making it easy to operate the expansion wings 200. After the movable expansion wings 200 reach the expanded state, the positioning mechanism can locate the position of the control handle 340 and lock the state of the expansion wings 200, making it convenient for the expansion wings 200 to maintain the expanded state, so that the sampling cavity diameter is maximized for convenient inspection or sampling. The expansion wings 200, after gathering and shrinking the sampling portion 220A, can also be positioned to avoid accidental opening. Moreover, the snap-fitting method is simple and easy to operate, and can be quickly loosened or snapped into position.

[0027] The above is only an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structure made using the contents of the description and drawings of the present invention, directly or indirectly used in other related technical fields, is also within the patent protection scope of the present invention.

Claims

1. A vaginal dilator, characterized in that: The invention comprises a shell having an operating chamber, at least six expansion wings arranged in the operating chamber and with one end extending away from the operating chamber, and a control assembly connected to the expansion wings and installed in the shell, wherein the multiple expansion wings can enclose a circular sampling portion, and a circular sampling chamber is formed inside the sampling portion, and the center of the sampling chamber is on the same straight line as the center of the operating chamber. The expansion wings can be controlled by the control assembly to move back and forth in the operating chamber in a direction away from or close to the chamber wall of the operating chamber. When the expansion wings move away from the chamber wall, the diameter of the sampling chamber gradually decreases. When the expansion wings move toward the chamber wall, the diameter of the sampling chamber gradually increases. After the diameter of the sampling chamber increases, a working gap is formed between every two adjacent expansion wings. The control assembly comprises a positioning mechanism for locking the position of the expansion wings when the diameter of the sampling chamber is maximum.

2. The vaginal dilator according to claim 1, characterized in that: The control assembly also includes a gear ring movably installed in the shell, a plurality of gears arranged in the shell and at intervals and meshing with the gear ring, a rack connected to the plurality of gears in a one-to-one correspondence, and a control handle connected to the outer wall of the gear ring and with one end exposed to the outside of the shell, the height of the gear is higher than the height of the gear ring, so that the lower part of the gear meshes with the gear ring and the upper part meshes with the rack; the plurality of racks are connected to the expansion wings in a one-to-one correspondence, and holding the control handle can control the rotation of the gear ring to drive the gear to rotate, thereby driving the rack to move back and forth in the shell.

3. The vaginal dilator according to claim 2, characterized in that: The housing comprises a lower shell and an upper shell connected by bolts and arranged symmetrically. An annular cavity penetrating the lower shell is provided inside the lower shell. The annular cavities in the lower shell and the upper shell can be assembled into the operating chamber. The lower shell is provided with an annular groove which is recessed toward the bottom surface of the lower shell and is arranged concentrically with the annular cavity. The gear ring is slidably mounted on the inner wall of the annular groove. All the gears are rotatably arranged in the annular groove, and all the gears can rotate around their own axes. The lower shell is provided with a notch which is communicated with the annular groove and is used to accommodate the control handle, and the control handle can move back and forth in the notch.

4. The vaginal dilator according to claim 3, characterized in that: The lower shell and the upper shell are both provided with a plurality of slide grooves corresponding to the positions of the racks, and one end of the slide groove is connected with the operating cavity, and the racks are slidably assembled in the slide grooves.

5. The vaginal dilator according to claim 3, characterized in that: The positioning mechanism includes a first positioning hole and a second positioning hole respectively arranged on the inner side wall of the notch, and two positioning clamping shafts arranged on the control handle and whose positions correspond to the first positioning hole and the second positioning hole respectively, and the positioning clamping shafts can be clamped with the first positioning hole or the second positioning hole.

6. The vaginal dilator according to claim 3, characterized in that: The outer surface of the control handle is covered with a rear silicone anti-slip layer.

7. The vaginal dilator according to any one of claims 1 to 6, characterized in that: The expansion wing includes an inclined section and a straight section with one end fixed to the inclined section. All the inclined sections can enclose a trumpet-shaped first cavity, and all the straight sections can enclose a sampling cavity of equal diameter. The end of the first cavity with the smallest cross-sectional area is connected to the sampling cavity, and the end with the largest cross-sectional area is located above the shell.

8. The vaginal dilator according to claim 7, characterized in that: All of the straight sections are arc-shaped, and the other end of each straight section is fixedly connected to a closing portion, and the closing portion is a variable cross-section structure with a cross-sectional area gradually decreasing from the fixed end to the non-fixed end. Multiple closing portions can be enclosed to form a trumpet-shaped second cavity, and the non-fixed end surface of each closing portion is covered with a flexible layer.

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