Self-destructive and immediate-destruction disposable vaginal dilators

Abstract

The present invention discloses a self-destructive and immediate-destruction disposable vaginal speculum. The disposable vaginal speculum of the present invention comprises an upper dilating piece and a lower dilating piece. The upper dilating piece includes an upper wing and a pressing handle connected thereto; the lower dilating piece includes a lower wing and a gripping handle connected thereto. Both sides of the rear ends of the upper wing and the lower wing are respectively connected by a pin to form a viewing opening between the upper and lower wings. The vaginal speculum further includes a dilating, positioning and destroying device, and the dilating, positioning and destroying device is a hook-and-buckle positioning self-destruction device or a screw positioning immediate-destruction device. The vaginal speculum of the present invention has the same operation process, procedure and time consumption as a non-destructive disposable vaginal speculum, but at the same time realizes destruction and cannot be restored, avoiding secondary use, thereby preventing cross-infection of iatrogenic diseases. It has a simple and practical structure, is easy and economical to manufacture, and is safe and effective to use.

Description

Technical Field

[0001] The present invention relates to a vaginal speculum for obstetrics and gynecology in medical devices, and particularly to a disposable vaginal dilator of self-destructive and immediate-destruction types. Background Art

[0002] A vaginal speculum, also known as a vaginal dilator, is a commonly used examination and surgical instrument in obstetrics, gynecology, and family planning departments. It is used to dilate the vagina to expose the examination site or surgical site. Before the 1980s, there was no disposable vaginal dilator in China, and the expensive spiral metal vaginal dilator was always used. After searching domestic and foreign literature, the U.S. Patent Office recorded a vaginal speculum 《vaginal speculum》 invented by John L. Marco in 1949 (patent number 2544932). The vaginal speculum described in that era was actually a vaginal speculum, also known as a vaginal dilator. The dilation and fixation device consisted of accessories such as nuts and positioning rods. A vaginal dilator had more than a dozen components, made of metal materials, with high costs, time-consuming operation. After use, it needed to be cleaned and disinfected at high temperature before being used for the next patient, posing a risk of cross-infection of iatrogenic diseases. Until 1989, the State Intellectual Property Office of China recorded the first invented disposable sterile vaginal dilator by Teacher Lin Jing of Wenzhou Medical University (patent name 《Vaginal Dilator》, patent number 891083928). A vaginal dilator was not only simplified to consist of only two upper and lower dilation pieces in total, but also the fixation structure was simplified to only two components in total. One was the upper dilation piece with a hook, and the other was the lower dilation piece with a buckle, which could achieve the function that the inspection type invented by Americans required 11 components and the surgical type required 9 components to make the opening angle of the upper and lower wings reach >40°. >40° has great benefits clinically, related to the safety and effectiveness of medical devices. It can effectively dilate the vagina, expose the cervix, facilitate examination, diagnosis, and surgery, with scientific and reasonable design, and can be operated with one hand, being efficient, convenient, inexpensive, and can be made disposable, and can also prevent cross-infection of iatrogenic diseases.

[0003] Later, it was reported that someone recycled and reused it after cleaning. To prevent secondary use, the inventors Lin Jing and Zhang Xingxing upgraded it and first invented an immediate-destruction type disposable sterile vaginal dilator in 2004 (patent name 《Immediate-destruction, painless, and noiseless disposable vaginal dilator》, patent number 200420116743.7). Its principle is to set an "immediate-destruction belt" at the non-force-bearing part of the dilator handle or push button. After use, the "immediate-destruction belt" is broken to achieve destruction and the purpose of not being able to be used again. However, in actual application, there are defects such as the "immediate-destruction belt" being prone to breakage during transportation when it is deep, and being difficult to break when it is shallow.

[0004] Therefore, it is necessary to further research and develop disposable vaginal dilators. Summary of the Invention

[0005] The object of the present invention is to provide a self-destructive and immediate-destruction disposable vaginal speculum.

[0006] The self-destructive and immediate-destruction disposable vaginal speculum provided by the present invention includes an upper dilating piece and a lower dilating piece. The upper dilating piece includes an upper wing and a pressing handle connected thereto; the lower dilating piece includes a lower wing and a gripping handle connected thereto. The two sides at the rear ends of the upper wing and the lower wing are respectively connected by a pin to form a viewing opening between the upper and lower wings. The vaginal speculum further includes a dilating, positioning and destroying device, which is a hook-and-button positioning self-destruction device or a screw positioning immediate-destruction device.

[0007] In another preferred example, the upper dilating piece includes an upper wing, and a pressing handle that extends arcuately left and right from the rear end of the upper wing and is integrally connected at the center position and then continues to extend downward; the lower dilating piece includes a lower wing, and a gripping handle that is integral with the lower wing and extends downward at the center position.

[0008] In another preferred example, the upper dilating piece includes an upper wing, and a pressing handle that is integral with the upper wing and extends backward along one end of the upper wing; the lower dilating piece includes a lower wing and a gripping handle that is integral with the lower wing and extends downward from the rear end of the lower wing. In another preferred example, the pressing handle is provided on the right or left side of the speculum. When the pressing handle is provided on the right side of the speculum, it is used as an inspection-type vaginal speculum. When the pressing handle is provided on the left side of the speculum, it is used as a surgical-type speculum.

[0009] In another preferred example, the upper wing and the pressing handle are integral. In another preferred example, the lower wing and the gripping handle are integral.

[0010] In another preferred example, a pin is provided between the upper wing and the pressing handle, and a pin hole is provided between the lower wing and the gripping handle; or a pin hole is provided between the upper wing and the pressing handle, and a pin is provided between the lower wing and the gripping handle.

[0011] In another preferred example, the dilating, positioning and destroying device is a hook-and-button positioning self-destruction device. The hook-and-button positioning self-destruction device includes a positioning seat fixed on the handle hole of the gripping handle. A self-destruction strip and a positioning rod are arranged front and back on the positioning seat. A positioning hook capable of meshing with the positioning buckle at the end of the pressing handle hole is provided on the back of the positioning rod. The positioning rod passes through the pressing handle hole on the pressing handle, and the positioning hook meshes with the positioning buckle.

[0012] In another preferred example, the dilating, positioning and destroying device is a screw positioning immediate-destruction device. The screw positioning immediate-destruction device includes a positioning seat fixed on the handle hole of the gripping handle. A self-destruction strip and a screw are arranged front and back on the positioning seat. The lower part of the screw is provided with a screw anterior fornix for placing the self-destruction strip, and the top is a pushing handle. The screw passes through the pressing handle hole on the pressing handle and is screwed and fixed with a nut.

[0013] In another preferred example, the upper expansion piece includes: an upper wing, and a push handle that extends leftward and rightward in an arc from the rear end of the upper wing and continues to extend downward after being integrated in the middle position. The push handle is provided with a push handle hole and a positioning buckle, and the positioning buckle is arranged at the end of the push handle hole; the lower expansion piece includes: a lower wing, and a handle that is integrated with the lower wing and extends downward in the middle position. The handle is provided with a handle hole and an inclined pad, and the inclined pad is at the end (or the rear end, the same below) of the handle hole; the expansion positioning and self-destruction device is a hook buckle positioning self-destruction device, and the hook buckle positioning self-destruction device includes a positioning seat. A self-destruction strip and a positioning rod are arranged front and rear on the positioning seat. A positioning hook that can be engaged with the positioning buckle at the end of the push handle hole is arranged on the back of the positioning rod. Among them, the positioning seat is arranged in the handle hole and the inclined pad, and the positioning rod passes through the push handle hole on the push handle. In another preferred example, at least one of the self-destruction strip and the positioning rod should have elasticity. In another preferred example, a double-layer handle hole is provided in the middle of the handle, the lower layer is larger than the upper layer, and the shape of the lower layer is the same as that of the positioning seat. In another preferred example, the inclined pad is arranged at the end (or the rear end) of the lower layer. In another preferred example, the top end of the self-destruction strip extends forward to form a crown. In another preferred example, the handle is also optionally provided with a protrusion, which is arranged in front of the handle hole, and the crown is buckled with the protrusion located in front of the handle hole.

[0014] In another preferred example, the upper expansion piece includes: an upper wing, and a push handle that is integrated with the upper wing and extends backward along one end of the upper wing. The push handle is provided with a push handle hole and a positioning buckle, and the positioning buckle is arranged at the end of the push handle hole; the lower expansion piece includes: a lower wing, and a handle that is integrated with the lower wing and extends downward from the rear end of the lower wing. The handle is provided with a handle hole and an inclined pad, and the inclined pad is at the end of the handle hole; the expansion positioning and self-destruction device is a hook buckle positioning self-destruction device, and the hook buckle positioning self-destruction device includes a positioning seat. A self-destruction strip and a positioning rod are arranged front and rear above the positioning seat. A positioning hook that can be engaged with the positioning buckle at the end of the push handle hole is arranged on the back of the positioning rod. Among them, the positioning seat is arranged in the handle hole and the inclined pad, and the positioning rod passes through the push handle hole on the push handle. In another preferred example, the push handle is arranged on the right or left side of the dilator. In another preferred example, at least one of the self-destruction strip and the positioning rod should have elasticity. In another preferred example, a double-layer handle hole is provided in the middle of the handle, the lower layer is larger than the upper layer, and the shape of the lower layer is the same as that of the positioning seat. In another preferred example, the inclined pad is arranged at the end (or the rear end) of the lower layer. In another preferred example, the top end of the self-destruction strip extends forward to form a crown. In another preferred example, the handle is also optionally provided with a protrusion, which is arranged in front of the handle hole, and the crown is buckled with the protrusion located in front of the handle hole.

[0015] In another preferred example, the upper dilating piece includes: an upper wing, and a push handle that extends arcuately leftward and rightward from the rear end of the upper wing and continues to extend downward after being integrated at the mid-position, and a push handle hole is provided on the push handle; the lower dilating piece includes: a lower wing, and a grip that is integrated with the lower wing and extends downward at the mid-position, and a grip hole and an inclined pad are provided on the grip, and the inclined pad is at the end of the grip hole; the dilating positioning and self-destructing device is a spiral positioning and self-destructing device, and the spiral positioning and self-destructing device includes a positioning seat, on which self-destructing strips and a screw rod that can be screwed and positioned with a nut are arranged front and back, the lower part of the screw rod is provided with a screw rod front vault for placing the self-destructing strip, and the top is a push handle; wherein, the positioning seat is installed in the grip hole and the inclined pad, and the screw rod passes through the push handle hole on the push handle. In another preferred example, at least one of the self-destructing strip and the screw rod should have elasticity. In another preferred example, a double-layer grip hole is provided in the middle of the grip, the lower layer is larger than the upper layer, and the shape of the lower layer is the same as that of the positioning seat. In another preferred example, the inclined pad is arranged at the end (or called the rear end) of the lower layer. In another preferred example, the top end of the self-destructing strip extends forward to form a crown. In another preferred example, the grip is also optionally provided with a protrusion, which is arranged in front of the grip hole, and the crown is buckled with the protrusion located in front of the grip hole.

[0016] In another preferred example, the upper dilating piece includes: an upper wing, and a push handle that is integrated with the upper wing and extends backward along one end of the upper wing, and a push handle hole is provided on the push handle; the lower dilating piece includes: a lower wing, and a grip that is integrated with the lower wing and extends downward from the rear end of the lower wing, and a grip hole and an inclined pad are provided on the grip, and the inclined pad is at the end of the grip hole; the dilating positioning and self-destructing device is a spiral positioning and self-destructing device, and the spiral positioning and self-destructing device includes a positioning seat, on which self-destructing strips and a screw rod that can be screwed and positioned with a nut are arranged front and back, the lower part of the screw rod is provided with a screw rod front vault for placing the self-destructing strip, and the top is a push handle; wherein, the positioning seat is installed in the grip hole and the inclined pad, and the screw rod passes through the push handle hole on the push handle. In another preferred example, at least one of the self-destructing strip and the screw rod should have elasticity. In another preferred example, the push handle is arranged on the right or left side of the dilator. In another preferred example, a double-layer grip hole is provided in the middle of the grip, the lower layer is larger than the upper layer, and the shape of the lower layer is the same as that of the positioning seat. In another preferred example, the inclined pad is arranged at the end (or called the rear end) of the lower layer. In another preferred example, the top end of the self-destructing strip extends forward to form a crown. In another preferred example, the grip is also optionally provided with a protrusion, which is arranged in front of the grip hole, and the crown is buckled with the protrusion located in front of the grip hole.

[0017] In another preferred example, the vaginal dilator further includes a dilating self-destructing device, and the dilating self-destructing device includes a thin sheet provided on the push handle and a puncturing strip provided on the grip. In another preferred example, the upper part of the push handle is provided with a thin sheet that is fixed on at least one side. In another preferred example, the upper part of the grip is provided with a puncturing strip corresponding to the position of the thin sheet.

[0018] In another preferred example, a wedge-shaped positioning buckle is provided at the end of the push handle hole.

[0019] In another preferred example, a rectangular push handle hole is provided in the middle of the push handle, and a wedge-shaped positioning buckle is provided at the end of the push handle hole.

[0020] In another preferred example, an inclined pad is provided at the rear end of the bottom of the handle hole.

[0021] In another preferred example, the handle has a nearly circular handle hole in the middle, with a double-layer design. The bottom layer is larger than the upper layer. The shape of the bottom layer is the same as that of the positioning seat, and the shape of the upper layer is not limited. In another preferred example, the inclined pad is provided at the end (or the rear end) of the bottom layer.

[0022] In another preferred example, the positioning seat is polygonal, thicker at the front and thinner at the rear. Optimally, it is shaped like a calabash, thicker at the front and thinner at the rear.

[0023] In another preferred example, the self-destruction strip is long and strip-shaped, with a head crown at the head end, and is slightly inclined forward as a whole. Its front is the front wall of the handle hole, and its rear is the positioning rod. In another preferred example, the self-destruction strip is horizontally shaped like a "7".

[0024] In another preferred example, the positioning rod is arc-shaped as a whole, with a push handle at the top, serrated positioning hooks arranged in the middle of the back, and the lower part is relatively flat and inclined forward.

[0025] In another preferred example, the shaft pin is large at both ends, small in the middle, solid in the middle and lower parts, and has a split and elastic upper middle part. The edge diameter of the split is slightly larger than the diameter of the split, and the whole is shaped like a dumbbell.

[0026] The dilation positioning and destruction device and / or dilation self-destruction device of the present invention are also suitable for other double-wing, three-wing, four-wing or multi-wing vaginal dilators. The upper dilation piece, the lower dilation piece, and the dilation positioning and destruction device and / or dilation self-destruction device can all be made of biodegradable materials.

[0027] For the disposable vaginal speculum containing the hook and buckle positioning self-destruction device, when in use, the upper and lower wings are placed in the vagina in a closed state. Press the push handle to open the upper and lower wings to the required visual field. Keep the visual field range by engaging the positioning hooks and the positioning buckle. At this time, the vagina and cervix can be observed, examined or an operation can be performed through the visual field opening. When the examination or operation is over, the doctor gently pushes the push handle forward with his hand. The self-destruction strip is squeezed by the front wall of the handle hole, and its root immediately breaks and self-destructs, and cannot be restored. At the same time, the thrust is transmitted through the positioning rod to the positioning seat. Through the lever action of the inclined pad and the design of the positioning seat being thicker at the front and thinner at the rear, the positioning seat immediately slips out of the handle hole and the inclined pad and self-destructs. The positioning rod is out of position, and the positioning hook immediately disengages from the positioning buckle and self-destructs. The three almost self-destruct at the same time, and the upper and lower wings automatically close. The doctor can take out the vaginal dilator from the vagina.

[0028] A vaginal dilator incorporating a helical positioning self-destruct device. When in use, with the upper and lower wings in a closed state, it is inserted into the vagina. The push handle is pressed, and the nut is rotated downward on the screw rod to open the upper and lower wings to the desired viewing field and fix them. At this time, the vagina, cervix can be observed and examined through the viewing port, or surgery can be performed. After the examination or surgery is completed, the doctor removes the dilator from the vagina, rotates the nut to the position where the upper and lower wings are closed, and then gently pushes the push handle or the nut forward. The self-destructing strip is squeezed by the front wall of the handle hole, and its root immediately breaks and self-destructs and cannot be restored. At the same time, the thrust is transmitted through the screw rod to the positioning seat, and through the lever action of the inclined pad and the design of the positioning seat with a thicker front and thinner rear, the positioning seat immediately slips out of the handle hole and the inclined pad and self-destructs, and the screw rod self-destructs as the positioning seat slips out of position. The three self-destruct almost simultaneously.

[0029] In addition, when the expansion positioning and self-destruction device is arranged on one side of the dilator, the maximum opening angle of the upper and lower wings can reach >40°. That is, for the positioning hook and positioning buckle of the hook-and-buckle expansion positioning self-destruction device, when meshed and expanded to the maximum gear, the opening angle of the upper and lower wings can reach >40 degrees, and the positions of the positioning hook and positioning buckle can be interchanged; for the screw rod and nut of the helical expansion positioning and self-destruction device, when screwed and expanded to the maximum gear, the opening angle of the upper and lower wings can reach >40 degrees; that is to say, even with the expansion positioning and self-destruction device, the dilator still has a wide viewing field during use, and the maximum opening angle of the upper and lower wings can reach >40°, which can fully expose the vagina and cervix, and is very beneficial for various obstetrics and gynecology examinations and surgeries. Therefore, this vaginal dilator can be produced as a surgical type (the push handle is arranged on the left side of the dilator) for various transvaginal surgeries in clinical obstetrics and gynecology, and can also be made into an examination type (the push handle is arranged on the right side of the dilator) for various transvaginal examinations in clinical obstetrics and gynecology.

[0030] Obviously, the present invention overcomes the deficiencies of the prior art and provides a self-destructing and immediate-destruction disposable vaginal dilator with a simple structure and convenient operation. When in use, all processes, steps, and time used are exactly the same as those of a non-destructive disposable vaginal speculum. There is no need to add additional operation steps for the doctor during the destruction process, no additional force is required, no additional time is added, and no additional pain is caused to the patient. It is safe and reliable to use. When the operation is completed, just gently push the push handle forward (for the helical positioning self-destruct device, the nut can also be pushed), the self-destructing strip will immediately break and self-destruct, and the positioning seat will slip out of the handle hole and the inclined pad and "self-destruct", and it cannot be restored or reused after self-destruction, achieving the purpose of preventing cross-infection of iatrogenic diseases and improving the safety of clinical use and patients. The disposable vaginal dilator of the present invention also has the advantages of a simple structure and easy manufacturing.

[0031] In addition, a vaginal dilator further comprising an expanding self-destructing device, when used, after being inserted into the vagina, press the handle, so that the upper and lower wings open to the required visual field, and after positioning, keep the visual field range, and the doctor can observe, examine the vagina and cervix or perform surgery through the visual field opening. During this process, the puncture strip on the handle will puncture the thin sheet on the handle and self-destruct, and cannot be restored, indicating that the dilator has been clinically used, more intuitively indicating to people to avoid secondary use.

[0032] It should be understood that within the scope of the present invention, the above-mentioned technical features of the present invention and the technical features specifically described below (such as in the embodiments) can be combined with each other to form new or preferred technical solutions. Each feature disclosed in the specification can be replaced by any alternative feature that provides the same, equivalent or similar purpose. Due to space limitations, they will not be repeated one by one here. Brief Description of the Drawings

[0033] Figure 1 Diagrams and cross-sectional views showing the closed state of the vaginal speculum of Example 1 when not in use and when inserted into the vagina.

[0034] Figure 2 Diagrams and cross-sectional views showing the expanded state of the vaginal speculum of Example 1 when in use.

[0035] Figure 3 Cross-sectional view showing the closed state of the vaginal speculum of Example 1 after use.

[0036] Figure 4 Schematic structural diagram of the upper and lower expansion sheets of the vaginal speculum of Example 1.

[0037] Figure 5 Schematic structural diagram of the expansion positioning and self-destructing device.

[0038] Figure 6 Schematic structural diagram and cross-sectional view showing the closed state of the vaginal dilator of Example 2 when not in use.

[0039] Figure 7 Schematic structural diagram and cross-sectional view showing the expanded state of the vaginal dilator of Example 2 when in use.

[0040] Figure 8 Cross-sectional view showing the closed state of the vaginal dilator of Example 2 after use.

[0041] Figure 9 Schematic structural diagram of the upper and lower expansion sheets.

[0042] Figure 10 Schematic structural diagram of the expansion positioning and self-destructing device.

[0043] Figure 11Diagrams showing the closed state of the vaginal dilator of Example 3 before use and when inserted into the vagina, and the dilated state during use.

[0044] Figure 12 Schematic diagram showing the step-by-step adjustment of the dilated state of the vaginal dilator of Example 3 during use.

[0045] Figure 13 Diagram showing the closed state of the vaginal dilator of Example 3 after use.

[0046] Figure 14 Schematic diagram of the structure of the dilation positioning and destruction device.

[0047] Figure 15 Diagrams showing the closed state of the vaginal dilator of Example 4 before use and when inserted into the vagina, and the dilated state during use.

[0048] Figure 16 Schematic diagram showing the step-by-step adjustment of the dilated state of the vaginal dilator of Example 4 during use.

[0049] Figure 17 Diagram showing the closed state of the vaginal dilator of Example 4 after use.

[0050] Figure 18 Schematic diagram of the structure of the dilation positioning and destruction device.

[0051] Figure 19 Diagrams showing the closed state and cross-sectional view of the vaginal dilator of Example 5 before use.

[0052] Figure 20 Diagrams showing the dilated state and cross-sectional view of the vaginal dilator of Example 5 during use.

[0053] Figure 21 Cross-sectional view of the closed state of the vaginal dilator of Example 5 after use.

[0054] Figure 22 Schematic diagram of the structure of the upper and lower dilation sheets.

[0055] Figure 23 Diagrams showing the closed state and cross-sectional view of the vaginal dilator of Example 6 before use.

[0056] Figure 24 Diagrams showing the dilated state and cross-sectional view of the vaginal dilator of Example 6 during use.

[0057] Figure 25 Diagram showing the closed state of the vaginal dilator of Example 6 after use.

[0058] Figure 26 Schematic diagram of the structure of the upper and lower dilation sheets.

[0059] Figure 27Diagram showing the closed state of the vaginal dilator of Example 7 before use and when inserted into the vagina, and the expanded state during use.

[0060] Figure 28 Schematic diagram showing the step-by-step adjustment of the expanded state of the vaginal dilator of Example 7 during use.

[0061] Figure 29 Diagram showing the closed state of the vaginal dilator of Example 7 after use.

[0062] Figure 30 Diagram showing the closed state of the vaginal dilator of Example 8 before use and when inserted into the vagina, and the expanded state during use.

[0063] Figure 31 Schematic diagram showing the step-by-step adjustment of the expanded state of the vaginal dilator of Example 8 during use.

[0064] Figure 32 Diagram showing the closed state of the vaginal dilator of Example 8 after use.

[0065] Figure 33 Schematic diagram of the structure of a surgical dilator with a hook-and-buckle positioning self-destruction device.

[0066] Figure 34 Schematic diagram of the structure of the upper and lower expansion sheets of a surgical dilator.

[0067] Figure 35 Schematic diagram of the structure of a surgical dilator with a spiral positioning self-destruction device. Detailed implementation methods

[0068] The present invention will be further described below in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present invention and not to limit the scope of the present invention. Unless otherwise defined, all professional and scientific terms used herein have the same meaning as those familiar to those skilled in the art. In addition, any methods and materials similar or equivalent to the described content can be applied to the method of the present invention. The preferred implementation methods and materials described herein are only for demonstration purposes.

[0069] In this article, vaginal speculum and vaginal dilator have the same meaning. The snap self-destruction type can also be called the hook-and-buckle self-destruction type.

[0070] Example 1

[0071] Snap self-destruction type disposable vaginal speculum

[0072] First, refer to the appendix Figure 1 and 4The middle buckle self-destructive disposable vaginal speculum includes an upper expansion piece and a lower expansion piece. The upper expansion piece includes an upper wing 1 and a handle 5 which is integral with the upper wing 1 and extends from the rear end of the upper wing to the left and right in an arc shape and continues to extend downward after being connected to the middle position; the lower expansion piece includes a lower wing 2 and a handle 6 which is integral with the lower wing 2 and extends downward in the middle position. The two sides of the rear ends of the upper wing 1 and the lower wing 2 are respectively connected to the shaft pin 4 through the shaft hole 3 to form a viewing port 19 between the upper and lower wings, so the upper wing and the lower wing can be opened and closed by controlling the handle 5. Figure 4 As shown, the handle 5 is provided with a handle hole 9 and a positioning buckle 18, and the positioning buckle 18 is at the end of the handle hole 9. The gripping handle 6 is provided with a gripping hole 10 and an inclined pad 11, and the inclined pad 11 is at the end of the gripping hole 10.

[0073] Please refer to the attached Figures 2-3 5. The vaginal speculum of this embodiment includes an expansion positioning and destruction device, which is a hook positioning and self-destruction device, which cleverly combines the expansion positioning function of fixing the upper wing 1 and the lower wing 2 in the open state and the self-destruction function of self-destruction immediately after use. The expansion positioning and destruction device includes an expansion positioning device, which includes a positioning seat 12 installed in the handle hole 10 and the inclined pad 11, and an arc-shaped positioning rod 13 extending upward, the upper end of the rod is a push handle 15, and the back of the rod is provided with a positioning hook 14 that can be engaged with the positioning buckle 18 at the end of the handle hole 9. The doctor can adjust and fix it according to the size of the visual field to be examined or the scope of surgery. The expansion positioning and destruction device further includes a self-destruction strip 16, which is on the positioning seat 12 and located in front of the positioning rod 13. The positioning rod 13 and the self-destruction strip 16 are passed through the handle hole 10, and the positioning seat 12 is placed in the handle hole 10 and the inclined pad 11. At least one of the self-destruction strip 16 and the positioning rod 13 should be elastic.

[0074] When the doctor finishes using the device, the push handle 15 is pushed at the same time, the self-destructing strip 16 can be broken, the positioning seat 12 can slip off, the positioning rod 13 loses the function of being closely matched and fixed with the positioning buckle 18, and the vaginal speculum can be self-destructed immediately.

[0075] According to a preferred embodiment, continue to refer to the attached Figures 1-3And 5, the self-destruction strip 16 is a short, small and slightly forward-tilted strip, located above the positioning seat 12. It is also an extension of the positioning seat 12. The front of it closely adheres to the front wall of the handle hole 10. Behind the self-destruction strip 16 is the positioning rod 13. On the one hand, due to the front-back tension between the self-destruction strip 16 and the positioning rod 13, the positioning seat 12 is more firmly fixed in the handle hole 10; on the other hand, when the self-destruction strip 16 is subjected to the force exerted by the push handle 15 together with the positioning rod 13, its abdomen is squeezed by the front wall of the handle hole 10, and together with the lever action of the positioning rod 13 through the positioning seat 12 and the inclined pad 11 causing the impact when the positioning seat 12 slips off, the root of the self-destruction strip 16 breaks immediately. Therefore, the breakage of the self-destruction strip 16 almost occurs simultaneously with the slipping of the positioning seat 12 from the handle hole 10 and the inclined pad 11. Due to the slipping of the positioning seat 12, the positioning rod 13 is out of position, and the positioning rod 13 and the positioning buckle 18 cannot be meshed, expanded and positioned. All of this occurs and is completed in an instant, and the self-destruction strip breaks at the root. In this way, even if the self-destruction strip breaks, it is still connected to the positioning seat and will not fall off alone; after the positioning rod is out of position, it is always connected to the positioning seat and will not fall off alone. Therefore, when the doctor takes it out, it is still an integral dilator. Thus, the operation is very time-saving, labor-saving, simple, practical, safe and effective.

[0076] According to a preferred embodiment, the head end of the self-destruction strip 16 extends forward to form a head crown 17, so that the self-destruction strip 16 with the head crown 17 is horizontally shaped like a "7". According to a preferred embodiment, the handle 6 is also optionally provided with a protrusion 20. The protrusion 20 is arranged in front of the handle hole 10. The head crown 17 is buckled with the protrusion 20 in front of the handle hole 10 located in the middle of the handle 6. The self-destruction strip 16 designed with the head crown 17 is more likely to break and self-destruct when squeezed by the front wall of the handle hole 10. Moreover, when the self-destruction strip with the head crown is squeezed and broken, it still breaks at the root. The operation is also time-saving, labor-saving, simple, convenient, safe and effective.

[0077] Continue to refer to Figure 1 , according to a preferred embodiment, before clinical use, the upper wing 1 and the lower wing 2 are in a closed state; when clinical use begins, the doctor inserts the vaginal speculum into the vagina, and the upper wing 1 and the lower wing 2 are still in a closed state. At this time, the self-destruction strip 16 can be seen to be intact.

[0078] Continue to refer to Figure 2 , when in clinical use, the doctor presses the push handle 5, the upper wing 1 and the lower wing 2 are expanded to the required view, the positioning hook 14 enters the positioning buckle 18 and the two are meshed to fix the upper wing 1 and the lower wing 2. The doctor starts to examine, diagnose or perform surgery. At this time, the self-destruction strip 16 is still intact.

[0079] Continue to refer to Figure 3, according to a preferred embodiment, when the clinical examination or operation is completed, the doctor gently pushes the push handle 15 forward. Due to the thrust and elastic action of the positioning rod, the positioning rod moves forward, causing the self-destruction strip 16 to be squeezed by the front wall of the handle hole 10. Its root will immediately break and cannot be restored.

[0080] According to a preferred embodiment, continue to refer to Figure 4 , a double-layer handle hole 10 is provided in the middle of the handle 6. The bottom layer is larger than the upper layer, and an inclined pad 11 is provided at the rear end of the bottom of the hole. The attention to detail design makes the bottom layer have a larger space than the upper layer on the one hand. According to a preferred embodiment, the bottom layer of the handle hole is designed in the shape of a gourd (two connected circular holes with unequal diameters), and can also be designed in other polygonal shapes. A positioning seat 12 in the shape of a gourd or other shape corresponding to the shape of the bottom layer of the handle hole is firmly installed in the handle hole 10, ensuring the safety and reliability of clinical use. On the other hand, the design of the upper and lower layers can reduce the overall thickness of the positioning seat 12, and the design of the positioning seat 12 with a thicker front and a thinner rear makes the positioning seat 12 easier to slip off from the handle hole 10 and the inclined pad 11 and self-destruct under the forward thrust of the push handle, so it cannot be used twice, achieving the purpose of preventing cross-infection of iatrogenic diseases.

[0081] Continue to refer to Figure 4 , according to a preferred embodiment, the shaft pin 4 is large at both ends, small in the middle, solid in the middle and lower part, and has a split and elastic middle and upper part. The diameter of the edge of the split is slightly larger than the diameter of the split. The whole is shaped like a dumbbell. The vaginal dilator with such a dumbbell-shaped shaft pin 4 is easy to install, easy to rotate during clinical use, flexible and convenient, improving the doctor's work efficiency.

[0082] Embodiment 2

[0083] Medium spiral self-destructing disposable vaginal dilator

[0084] First, refer to the appendix Figure 6 and 9 , the medium spiral self-destructing disposable vaginal dilator includes an upper dilating piece and a lower dilating piece. The upper dilating piece includes an upper wing 31 and a push handle 35 that is integrated with the upper wing 31 and extends left and right in an arc shape from the rear end of the upper wing and continues to extend downward after being connected in the middle position. A push handle hole 39 is provided on the push handle 35; the lower dilating piece includes a lower wing 32 and a handle 36 that is integrated with the lower wing 32 and extends downward in the middle position. A handle hole 40 and an inclined pad 41 are provided on the handle 36, and the inclined pad 41 is at the end of the handle hole 40. The two sides of the rear ends of the upper wing 31 and the lower wing 32 are respectively connected by shaft holes 33 to the shaft pins 34 to form a viewing opening 49 between the upper and lower wings. Therefore, the upper and lower wings can be opened and closed by controlling the push handle 35.

[0085] Please refer to the appendixFigures 6-8 10, the vaginal dilator of this embodiment includes an expansion positioning and disfiguring device, which is a spiral positioning and disfiguring device, which cleverly combines the expansion positioning function for fixing the upper wing 31 and the lower wing 32 in the open state and the disfiguring function that can be disfiguring after use. The expansion positioning and disfiguring device includes an expansion positioning device, which includes a positioning seat 42 installed in the handle hole 40 and the inclined pad 41 and a threaded screw 43 extending upward. The threaded screw 43 and the nut 44 cooperate, and the doctor can adjust and fix it according to the size of the inspected visual field or the surgical range. The expansion positioning and destruction device further includes a self-destruct strip 46, which is located on the positioning seat 42 in front of the screw 43. The root of the screw 43 is provided with a screw front dome 48 for accommodating the self-destruct strip 46, and the top is a push handle 45. The screw 43 and the self-destruct strip 46 are passed through the handle hole 40, and the screw 43 is further passed through the handle hole, and the positioning seat 42 is installed in the handle hole 40 and the inclined pad 41, and at least one of the self-destruct strip and the screw should be elastic.

[0086] Continue to see the attached Figure 8 and 10 The self-destruct strip 46 is a short and small strip that is slightly inclined forward as a whole. It is located above the positioning seat 42. It is also an extension of the positioning seat 42. The front is close to the front wall of the handle hole 40, and the back is the front dome 48 of the screw. When the push handle and the screw are applied, the belly is squeezed by the front wall of the handle hole, and the root of the screw is instantly broken due to the impact of the positioning seat slipping off due to the leverage of the positioning seat and the inclined pad. Therefore, the self-destruct strip breaks almost at the same time as the positioning seat slips out of the handle hole and the inclined pad. Due to the slipping of the positioning seat, the screw is out of place, and the screw and the nut cannot be screwed together for expansion and positioning. All this happens and is completed in an instant, so the operation is very time-saving and labor-saving, simple and practical, safe and effective.

[0087] According to a preferred embodiment, the head end of the self-destruct strip 46 extends forward to form a crown 47, so that the self-destruct strip 46 with the crown 47 is shaped like a "7" in the horizontal direction. According to a preferred embodiment, the handle 36 is further provided with an optional protrusion 50, which is arranged in front of the handle hole 40, and the crown 47 is engaged with the protrusion 50 in front of the handle hole 40 located in the middle of the handle 36. The self-destruct strip 46 with the crown 47 design is squeezed by the front wall of the handle hole 40 and is more likely to break and self-destruct.

[0088] Continue to view Figure 6 According to a preferred embodiment, before clinical use, the upper wing 31 and the lower wing 32 are in a closed state, and when clinical use begins, the doctor inserts the vaginal speculum into the vagina, and the upper wing 31 and the lower wing 32 are still in a closed state, at which time the self-destruct strip 46 can be seen intact.

[0089] Continue to view Figure 7, when in clinical use, the doctor presses the handle 35, the upper wing 31 and the lower wing 32 are expanded to the required field of view, the nut 44 is screwed onto the screw rod 43 for fixation, and the doctor starts the diagnosis and treatment or performs the operation. At this time, the self-destruction strip 46 remains intact.

[0090] Continue to refer to Figure 8 , according to a preferred embodiment, when the clinical examination or operation is completed, the doctor removes the dilator, withdraws the nut backward to the position where the upper and lower wings are closed, and presses the push handle 45 or the nut 44 (gently push it forward). Due to the thrust and elastic action of the screw rod 43, the self-destruction strip 46 is squeezed by the front wall of the handle hole 40, and its root will immediately break and cannot be restored.

[0091] Continue to refer to Figure 9 , a double-layer handle hole 40 is provided in the middle of the handle 36. The bottom layer is larger than the upper layer, and an inclined pad 41 is provided at the rear end of the bottom of the hole. The attention to detail design, on the one hand, makes the bottom layer have a larger space than the upper layer. According to a preferred embodiment, the bottom layer of the handle hole is designed in the shape of a calabash, and it can also be designed in other polygonal shapes. The positioning seat 42 corresponding to the shape of the bottom layer of the handle hole is firmly installed in the handle hole 40, ensuring safe and reliable clinical use. On the other hand, the design of the upper and lower layers can reduce the overall thickness of the positioning seat 42, and the design of the positioning seat 42 with a thicker front and a thinner rear makes the positioning seat 42 more likely to slip off from the handle hole 40 and the inclined pad 41 and self-destruct under the forward thrust of the push handle, so it can only be used once, achieving the purpose of preventing cross-infection of iatrogenic diseases.

[0092] Continue to refer to Figure 9 , according to a preferred embodiment, the shaft pin 34 is large at both ends, small in the middle, solid in the middle and lower part, and has a split and elastic middle and upper part. The diameter of the edge of the split is slightly larger than the diameter of the split. The overall shape is like a dumbbell. The vaginal dilator with such a dumbbell-shaped shaft pin 34 is easy to install, easy and convenient to rotate during clinical use, flexible and free, improving the doctor's work efficiency.

[0093] Example 3

[0094] Surgical and examination self-destructive vaginal dilators

[0095] First refer to the appendix Figure 11, the vaginal dilator of this embodiment includes an upper wing 51 and a push handle 55 that is integrated with the upper wing 51 and extends backward along one end of the side of the upper wing. It also includes a lower wing 52 and a grip handle 56 that is integrated with the lower wing 52 and extends backward. The two sides at the rear ends of the upper wing 51 and the lower wing 52 are respectively connected through shaft holes (not labeled) and a shaft pin 54 to form a viewing opening 69 between the upper and lower wings. Therefore, the upper wing 51 and the lower wing 52 can be opened and closed by controlling the push handle 55. The push handle 55 is provided with a push handle hole 59 and a positioning buckle 68, and the positioning buckle 68 is at the end of the push handle hole 59. The grip handle 56 is provided with a grip handle hole 60 and an inclined pad 61, which is arranged at the position on the same side as the push handle 55, and the inclined pad 61 is at the end of the grip handle hole 60.

[0096] Please refer to the appendix Figures 11-14 , the vaginal dilator of this embodiment includes a dilation positioning and self-destruction device, which is a hook buckle positioning and self-destruction device, and combines the dilation and fixation positioning function of fixing the open state of the upper wing 51 and the lower wing 52 and the self-destruction function that can be self-destructed immediately after use perfectly and ingeniously. The dilation positioning and self-destruction device includes a dilation positioning device, which includes a positioning seat 62 installed in the grip handle hole 60 and the inclined pad 61, and an arc-shaped positioning rod 63 extending upward. The upper end of the rod is a push handle 65, and a positioning hook 64 is provided on the back of the rod, which meshes with the positioning buckle 68 at the end of the push handle hole 59. Doctors can adjust and fix it according to the size of the examination field of view or the surgical scope. Please refer to the appendix Figures 13-14 , the dilation positioning and self-destruction device further includes a self-destruction strip 66, which is on the positioning seat 62 and in front of the positioning rod 63. The positioning rod 63 and the self-destruction strip 66 pass through the grip handle hole 60 beside the outer side of the middle part of the grip handle, and the positioning rod 63 continues to pass through the push handle hole 59. The positioning seat 62 is installed in the grip handle hole 60 and the inclined pad 61. At least one of the self-destruction strip 66 and the positioning rod 63 should have elasticity. When the doctor finishes using, push the push handle 65 at the same time, and the self-destruction strip 66 can be broken, the positioning seat 62 can slip off, and the positioning rod 63 loses the function of being fixed to the positioning buckle 68.

[0097] Generally, for the examination-type vaginal dilator, the push handle and the dilation positioning and self-destruction device are arranged on the right side, as Figures 11-13 shown; for the surgical-type vaginal dilator, the push handle and the dilation positioning and self-destruction device are arranged on the left side (the structure shown Figures 11-13 only has a difference in the left and right side positions, and the structure is as Figures 33-34As shown). For inspection and surgical vaginal dilators, upper and lower wings of different shapes are designed according to usage requirements. For example, the upper and lower wings of the inspection type are long and narrow, shaped like a duck's bill, and the upper and lower wings of the surgical type are short and wide, shaped like a bird's beak. Since this dilator positioning and self-destructing device is designed on one side of the handle (push handle 55 and grip handle 56), this design expands the field of view and space of the entire dilator. When expanding, the opening angle of the upper and lower wings can reach >40°, which is very beneficial for various gynecological and obstetric examinations and surgeries. It can not only meet the needs of clinical examinations but also meet the needs of clinical surgeries, be beneficial for fully exposing the vagina and cervix, and at the same time be beneficial for protecting the vaginal orifice from excessive dilation. Clinical use is more beneficial for diagnosis, treatment, and surgery, and is safer and more effective.

[0098] According to a preferred embodiment, please refer to Figure 14 , the self-destructing strip 66 is a short and small strip that is slightly inclined forward as a whole. Like the positioning rod 63, it is also an upward extension of the positioning seat 62, located above the positioning seat 62, with its front closely attached to the front wall of the grip hole 60 and its rear being the positioning rod 63.

[0099] On the one hand, due to the front and rear tensions of the self-destructing strip 66 and the positioning rod 63, the positioning seat 62 is more firmly fixed in the grip hole 60; on the other hand, when the self-destructing strip 66 is subjected to the force applied by the push handle 65 together with the positioning rod 63, its abdomen is squeezed by the front wall of the grip hole 60, and with the lever action of the positioning rod 63 through the positioning seat 62 and the inclined pad 61 causing the impact when the positioning seat 62 slips, the root of the self-destructing strip 66 breaks immediately. Therefore, the breakage of the self-destructing strip 66 almost occurs simultaneously with the slipping of the positioning seat 62 from the grip hole 60 and the inclined pad 61. Due to the slipping of the positioning seat 62, the positioning rod 63 is out of position, and the positioning rod 63 and the positioning buckle 68 necessarily cannot engage for expansion and positioning. All of this occurs and is completed in an instant, and since the self-destructing strip 66 breaks at the root, even if the self-destructing strip 66 breaks, it is still connected to the positioning seat 62 and will not fall off alone; after the positioning rod 63 is out of position, it is always connected to the positioning seat 62 and will not fall off alone. Therefore, when the doctor takes it out, it is still an integral dilator, so the operation is very time-saving, labor-saving, simple, practical, safe, and effective.

[0100] According to a preferred embodiment, the head end of the self-destructing strip 66 extends forward to form a head crown 67, making the self-destructing strip 66 with the head crown 67 laterally resemble the shape of a "7". According to a preferred embodiment, the grip handle 56 is also optionally provided with a protrusion 70. The protrusion 70 is arranged in front of the grip hole 60, and the head crown 67 is buckled with the protrusion 70 in front of the grip hole 60 located in the middle of the side of the grip handle 56. The self-destructing strip 66 designed with the head crown 67 is more likely to break and self-destruct when squeezed by the front wall of the grip hole 60. Moreover, when the self-destructing strip 66 with the head crown 67 is squeezed and broken, it still breaks at the root, and the operation is equally time-saving, labor-saving, simple, convenient, safe, and effective.

[0101] Although the handle and expansion positioning and destruction device of the surgical dilator are located in different positions from those of the inspection dilator (specifically, the surgical dilator is on the left and the inspection dilator is on the right), the operation is basically the same as that of the inspection dilator. Figures 11-13 Describe the usage process. Continue to refer to Figure 11 According to a preferred embodiment, before clinical use, the upper wing 51 and the lower wing 52 are in a closed state, and when clinical use begins, the doctor inserts the vaginal dilator into the vagina, and the upper wing 51 and the lower wing 52 are still in a closed state, and at this time, the self-destruct strip 66 can be seen intact. Figures 11-12 When used clinically, the doctor presses the handle 55, the upper wing 51 and the lower wing 52 are expanded to the desired field of view, the positioning buckle 68 engages with the positioning hook 64 and is fixed, and the doctor begins to check, diagnose or perform surgery, and the self-destruct strip 66 is intact. Please refer to Figure 13 According to a preferred embodiment, when the clinical examination or operation is completed, the doctor presses the push handle 65. Due to the thrust and elastic effect of the positioning rod, the positioning rod moves forward so that the self-destruct strip 66 is squeezed by the front wall of the handle hole 60, and its root will be broken immediately and cannot be restored.

[0102] According to a preferred embodiment, please continue to refer to Figure 11 A double-layer handle hole 60 is provided on the side of the middle part of the handle 56, the bottom layer is larger than the upper layer, and an inclined pad 61 is provided at the rear end of the bottom of the hole. This design, which pays attention to even the details, makes the bottom layer have a larger space than the upper layer. According to a preferred embodiment, the bottom layer of the handle hole 60 is designed to be in the shape of a treasure gourd, and the positioning seat 62 in the shape of a treasure gourd corresponding to the shape of the bottom layer is firmly installed in the handle hole 60, ensuring safe and reliable clinical use. On the other hand, the design of the upper and lower layers can reduce the overall thickness of the positioning seat 62, and the design of the positioning seat 62 being thick in front and thin in the back, so that the positioning seat 62 is more likely to slip from the handle hole 60 and the inclined pad 61 under the action of the forward thrust of the push handle, through the transmission of the positioning rod 63 and under the lever action of the inclined pad 61, so that the positioning rod 63 is out of position, the positioning rod 63 is separated from the positioning buckle 68, and can no longer be closely engaged with the positioning buckle, thereby losing the expansion and positioning functions, and the three are self-destructed at the same time and cannot be restored, so that it can only be used once, and the purpose of eliminating cross infection of medical diseases is achieved.

[0103] Continue to refer to Figures 11-13 According to a preferred embodiment, the axle pin 54 is large at both ends and small in the middle, the lower middle part is solid, and the upper middle part is open and elastic, the edge diameter of the open piece is slightly larger than the diameter of the open piece, and the whole is dumbbell-shaped. The vaginal dilator with such a dumbbell-shaped axle pin 54 is easy to install, easy and convenient to rotate during operation, and flexible, thereby improving the doctor's work efficiency.

[0104] Example 4

[0105] Surgical and inspection type disposable vaginal speculum

[0106] First, refer to the attached Figure 15 and 17 , the vaginal speculum of this embodiment includes an upper wing 71 and a push handle 75 integrated with the upper wing 71 and extending backward along one end of the side of the upper wing, a lower wing 72 and a grip handle 76 integrated with the lower wing 72 and extending backward. The two sides at the rear ends of the upper wing 71 and the lower wing 72 are respectively connected to the axle pin 74 through axle holes (not shown) to form a viewing port 89 between the upper and lower wings. Therefore, the upper and lower wings can be opened and closed by controlling the push handle 75. A push handle hole 79 is provided on the push handle 75. A grip handle hole 80 and an inclined pad 81 are provided on the grip handle 76, and the inclined pad 81 is at the end of the grip handle hole 80.

[0107] Please refer to the attached Figures 15-16 and 18, the vaginal speculum of this embodiment includes an expansion positioning and destruction device, which is a spiral positioning and destruction device, and combines the expansion positioning function for fixing the open state of the upper wing 71 and the lower wing 72 and the destruction function that can be destroyed when use is completed perfectly. The expansion positioning and destruction device includes an expansion positioning device, which includes a positioning seat 82 installed in the grip handle hole 80 and the inclined pad 81, and a screw rod 83 extending upward with threads. The threaded screw rod 83 is screwed with a nut 84, and the doctor can adjust and fix according to the size of the inspected field of view or the surgical scope. Please refer to the attached Figure 17 , the expansion positioning and destruction device further includes a self-destruction strip 86. On the positioning seat 82, in front of the screw rod 83, a screw rod front vault 88 for placing the self-destruction strip 86 is provided at the lower part of the screw rod. The top of the screw rod is a push handle 85. The screw rod 83 and the self-destruction strip 86 pass through the grip handle hole 80, the screw rod 83 continues to pass through the push handle hole 79, the positioning seat 82 is installed in the grip handle hole 80 and the inclined pad 81, and at least one of the self-destruction strip 86 and the screw rod 83 should have elasticity. After the doctor takes out the speculum after use and pushes the push handle 85 or the nut 84, the self-destruction strip 86 can be broken, the positioning seat 82 can slip off, and the screw rod 83 loses the positioning function of the positioning seat 82 and at the same time loses the function of being tightly fitted with the nut 84 and cannot be fixed.

[0108] Generally, for the inspection type vaginal speculum, the push handle and the expansion positioning and destruction device are arranged on the right side, as Figures 15-17 shown; for the surgical type vaginal speculum, the push handle and the expansion positioning and destruction device are arranged on the left side (only the left and right positions are different from the Figures 15-17 structure shown, as Figure 35As shown). For inspection and surgical vaginal dilators, upper and lower wings of different shapes are designed according to usage requirements. For example, the upper and lower wings of the inspection type are long and narrow, shaped like a duck's bill, and the upper and lower wings of the surgical type are short and wide, shaped like a bird's beak. Since this expansion and fixation self-destruction device is designed on one side of the handle (push handle 75 and grip 76), this design expands the vision and space of the entire dilator. When expanding, the opening angle of the upper and lower wings can reach >40°, which is very beneficial for various examinations and surgeries in obstetrics and gynecology, beneficial for fully exposing the vagina and cervix, and at the same time beneficial for protecting the vaginal orifice from excessive expansion. It is more beneficial for diagnosis, treatment, and surgery during clinical use, and is safer and more effective.

[0109] According to a preferred embodiment, please refer to Figure 18 , the self-destruction strip 86 is a short and small strip that is slightly inclined forward as a whole. Like the screw 83, it is also an upward extension of the positioning seat 82, located above the positioning seat 82, with its front closely attached to the front wall of the grip hole 80 and its rear being the anterior fornix of the screw 88. When a force is applied by the push handle together with the screw, its abdomen is squeezed by the front wall of the grip hole, and combined with the impact caused by the lever action of the screw through the positioning seat and the inclined pad, resulting in the slippage of the positioning seat, the root of the self-destruction strip breaks immediately. Therefore, the breaking of the self-destruction strip is almost simultaneous with the slippage of the positioning seat from the grip hole and the inclined pad. Due to the slippage of the positioning seat, the screw is displaced, and the screw and the nut cannot be screwed together for expansion and positioning. All of this occurs and is completed in an instant, so the operation is very time-saving and labor-saving, simple and practical, safe and effective.

[0110] On the one hand, due to the front and rear tensions of the self-destruction strip 86 and the screw 83, the positioning seat 82 is more firmly fixed in the grip hole 80; on the other hand, when the self-destruction strip 86 is subjected to the force applied by the push handle 85 together with the screw 83, its abdomen is squeezed by the front wall of the grip hole 80, and combined with the impact caused by the lever action of the screw 83 through the positioning seat 82 and the inclined pad 81, resulting in the slippage of the positioning seat 82, the root of the self-destruction strip 86 breaks immediately. Therefore, the breaking of the self-destruction strip 86 is almost simultaneous with the slippage of the positioning seat 82 from the grip hole 80 and the inclined pad 81. Due to the slippage of the positioning seat 82, the screw 83 is displaced and can no longer be tightly fitted and screwed with the nut 84 for expansion and positioning. All of this occurs and is completed in an instant, and the self-destruction strip 86 breaks at the root, so even if the self-destruction strip 86 breaks, it is still connected to the positioning seat 82 and will not fall off alone; after the screw 83 is displaced, it is always connected to the positioning seat 82 and will not fall off alone. Therefore, the operation is very time-saving and labor-saving, simple and practical, safe and effective.

[0111] According to a preferred embodiment, the head end of the self-destructing strip 86 extends forward to form a head crown 87, such that the self-destructing strip 86 with the head crown 87 is shaped like a "7" character horizontally. According to a preferred embodiment, the handle 76 is optionally further provided with a protrusion 90, the protrusion 90 is arranged in front of the handle hole 80, and the head crown 87 is buckled with the protrusion 90 in front of the handle hole 80 at the middle part of the side of the handle 76. The self-destructing strip 86 designed with the head crown 87 is more likely to break and self-destruct when being extruded by the front wall of the handle hole 80. Moreover, when the self-destructing strip 86 with the head crown 87 breaks due to extrusion, it still breaks at the root, and the operation is time-saving, labor-saving, simple, convenient, safe and effective.

[0112] Although the handle and the expansion positioning and destruction device of the surgical dilator are arranged at different positions from those of the inspection dilator (specifically, the surgical one is on the left side and the inspection one is on the right side), the usage operation is basically the same as the usage process of the above-mentioned inspection dilator. The following combines Figures 15-17 to illustrate the usage process. Continuing to refer to Figure 15 , according to a preferred embodiment, before clinical use, the upper wing 71 and the lower wing 72 are in a closed state. When the clinical use starts and the doctor inserts the vaginal speculum into the vagina, the upper wing 71 and the lower wing 72 are still in a closed state, and at this time, it can be seen that the self-destructing strip 86 is intact. Continuing to refer to Figures 15-16 , when in clinical use, the doctor presses the handle 75, the upper wing 71 and the lower wing 72 are expanded to the required visual field, and the nut 84 rotates into the screw rod 83 to be fixed. The doctor starts to check, diagnose or perform an operation, and at this time, the self-destructing strip 86 is still intact. Please refer to Figure 17 , according to a preferred embodiment, when the clinical examination or operation is completed, the doctor takes out the dilator, withdraws the nut 84 backward, and can press the push handle 85 or the nut 84 when the upper and lower wings are closed. Due to the thrust and elastic action of the screw rod 83, the self-destructing strip 86 is extruded by the front wall of the handle hole 80, and its root will immediately break and cannot be restored.

[0113] According to a preferred embodiment, please continue to refer to Figure 15, on the middle side of the handle 76, there is a double-layer handle hole 80. The bottom layer is larger than the upper layer. At the rear end of the bottom of the hole, there is an inclined pad 81. The design that pays attention to details makes the bottom layer have a larger space than the upper layer on the one hand. According to an embodiment of the present invention, the bottom layer of the handle hole 80 is designed in the shape of a gourd, and the positioning seat 82 in the shape of a gourd corresponding to the shape of the bottom layer is firmly installed in the handle hole 80 to ensure the safety and reliability of clinical use. On the other hand, the design of the upper and lower layers can reduce the overall thickness of the positioning seat 82, and the design of the positioning seat 82 with a thicker front and a thinner rear makes the positioning seat 82 easier to slip out of the handle hole 80 and the inclined pad 81 under the action of the forward thrust of the push handle 85, transmitted by the screw 83 and under the lever action of the inclined pad 81, resulting in the misalignment of the screw 83 and being unable to be tightly screwed with the nut 84 again, thus losing the functions of expansion and positioning. The three are self-destructed at the same time and cannot be restored, achieving the purpose of only being used once and preventing cross-infection of iatrogenic diseases.

[0114] Continue to refer to Figures 15-17 , according to a preferred embodiment, the shaft pin 74 is large at both ends, small in the middle, solid in the middle and lower part, and has a split and elastic upper middle part. The diameter of the edge of the split is slightly larger than the diameter of the split, and the whole is in the shape of a dumbbell. The vaginal speculum with such a dumbbell-shaped shaft pin 74 is easy to install, easy and convenient to rotate during clinical use, flexible and free, and improves the working efficiency of doctors.

[0115] Example 5

[0116] Self-destructive disposable vaginal dilator

[0117] First refer to the appendix Figure 19 and 22 , the structure of the self-destructive disposable vaginal dilator in this embodiment is basically the same as that of the vaginal speculum in Example 1. The self-destructive disposable vaginal dilator also includes an upper dilating piece and a lower dilating piece. The upper dilating piece includes an upper wing 1 and a pressing handle 5 that is integrated with the upper wing 1 and extends left and right in an arc from the rear end of the upper wing and continues to extend downward after being connected in the middle position. The lower dilating piece includes a lower wing 2 and a handle 6 that is integrated with the lower wing 2 and extends downward in the middle position. The two sides of the rear ends of the upper wing 1 and the lower wing 2 are respectively connected through shaft holes 3 and shaft pins 4 to form a visual field opening 19 between the upper and lower wings. Therefore, the upper and lower wings can be opened and closed by controlling the pressing handle 5. The pressing handle 5 is provided with a pressing handle hole 9 and a positioning buckle 18, and the positioning buckle 18 is at the end of the pressing handle hole 9. The handle 6 is provided with a handle hole 10 and an inclined pad 11, and the inclined pad 11 is at the end of the handle hole 10.

[0118] Please refer to the appendix Figures 20-21And 5, the vaginal dilator includes a dilating, positioning and self-destructing device, which is a hook-and-buckle positioning self-destructing device that ingeniously combines the dilating and positioning function for fixing the open states of the upper wing 1 and the lower wing 2 and the self-destructing function that can be self-destructed immediately after use. The dilating, positioning and self-destructing device includes a dilating and positioning device, which includes a positioning seat 12 installed in the handle hole 10 and the inclined pad 11, and an arc-shaped positioning rod 13 extending upward. The upper end of the rod is a push handle 15, and a positioning hook 14 is provided on the back of the rod, which can engage with the positioning buckle 18 at the end of the push button hole 9. Doctors can quickly adjust and fix according to the size of the examined field of view or the surgical scope. The dilating, positioning and self-destructing device further includes a self-destructing strip 16, which is located in front of the positioning rod 13 on the positioning seat 12. The positioning rod 13 and the self-destructing strip 16 pass through the handle hole 10, and the positioning seat 12 is placed in the handle hole 10 and the inclined pad 11. At least one of the self-destructing strip 16 and the positioning rod 13 should have elasticity.

[0119] The difference between the structure of the self-destructing disposable vaginal dilator in this embodiment and the structure of the vaginal speculum in Embodiment 1 is that the vaginal dilator in this embodiment further includes a dilating and self-destructing device, which includes a thin sheet 7 provided on the push button 5 and a piercing strip 8 provided on the handle 6, and has the dilating and self-destructing function of being destructible during dilation. During the operation, the piercing strip can automatically pierce the thin sheet to achieve the purpose of self-destruction.

[0120] According to a preferred embodiment, continue to refer to the attached Figures 19-21 As shown in FIGS. 4 and 5, the self-destructing strip 16 is a short, small and overall slightly forward-tilted strip, which is located above the positioning seat 12. It is also an extension of the positioning seat 12. The front is closely attached to the front wall of the handle hole 10, and the back is the positioning rod 13. On the one hand, due to the front and back tensions of the self-destructing strip 16 and the positioning rod 13, the positioning seat 12 is more firmly fixed in the handle hole 10; on the other hand, when the self-destructing strip 16 is subjected to the force applied by the push handle 15 together with the positioning rod 13, its abdomen is squeezed by the front wall of the handle hole 10, and the positioning seat 12 slips due to the lever action of the positioning rod 13 through the positioning seat 12 and the inclined pad 11, resulting in the immediate fracture of the root of the self-destructing strip 16. Therefore, the fracture of the self-destructing strip 16 almost occurs simultaneously with the slippage of the positioning seat 12 from the handle hole 10 and the inclined pad 11. Due to the slippage of the positioning seat 12, the positioning rod 13 is out of position, and the positioning rod 13 and the positioning buckle 18 cannot engage for dilation and positioning. All of this occurs and is completed in an instant, and the self-destructing strip 16 fractures at the root, so even if the self-destructing strip 16 fractures, it is still connected to the positioning seat 12 and will not fall off alone; after the positioning rod 13 is out of position, it is always connected to the positioning seat 12 and will not fall off alone. Therefore, when the doctor takes it out, it is still an integral dilator, so the operation is very time-saving, labor-saving, simple, practical, safe and effective.

[0121] According to a preferred embodiment, the head end of the self-destruction strip 16 extends forward to form a head crown 17, such that the self-destruction strip 16 with the head crown 17 is laterally shaped like a "7". According to a preferred embodiment, the handle 6 is also optionally provided with a protrusion 20, which is arranged in front of the handle hole 10. The head crown 17 is buckled with the protrusion 20 in front of the handle hole 10 located in the middle of the handle 6. The self-destruction strip 16 designed with the head crown 17 is more likely to break and self-destruct when squeezed by the front wall of the handle hole 10. Moreover, when the self-destruction strip 16 with the head crown 17 is squeezed and broken, it still breaks at the root, and the operation is also time-saving, labor-saving, simple, convenient, safe and effective.

[0122] Continue to refer to Figure 19 , according to a preferred embodiment, before clinical use, the upper wing 1 and the lower wing 2 are in a closed state. When the clinical use begins and the doctor inserts the vaginal speculum into the vagina, the upper wing 1 and the lower wing 2 are still in a closed state. At this time, it can be seen that the self-destruction strip 16 is intact, and the thin sheet 7 on the push button 5 of the dilation self-destruction device is also intact, and they are all in their normal positions.

[0123] Continue to refer to Figure 20 , when in clinical use, the doctor presses the push button 5, the upper wing 1 and the lower wing 2 are expanded to the required visual field, the positioning hook 14 enters the positioning buckle 18 and the two are engaged to fix the upper wing 1 and the lower wing 2. The doctor starts the examination, diagnosis and treatment or performs the operation. At this time, the self-destruction strip 16 is still intact; while the puncture strip 8 on the handle 6 will simultaneously puncture the thin sheet 7 on the push button 5 corresponding to the position of the puncture strip 8, and the dilation self-destruction device is automatically deformed and cannot be restored.

[0124] Continue to refer to Figure 21 , according to a preferred embodiment, when the clinical examination or operation is completed, the doctor gently pushes the push handle 15 forward. Due to the thrust and elastic action of the positioning rod, the positioning rod moves forward to make the self-destruction strip 16 be squeezed by the front wall of the handle hole 10, and its root will immediately break and cannot be restored.

[0125] According to a preferred embodiment, continue to refer to Figure 22 , a double-layer handle hole 10 is provided in the middle of the handle 6. The bottom layer is larger than the upper layer, and an inclined pad 11 is provided at the rear end of the bottom of the hole. The design that pays attention to details makes the bottom layer have a larger space than the upper layer on the one hand.

[0126] According to a preferred embodiment, the bottom layer of the handle hole 10 is designed in the shape of a precious gourd, and a positioning seat 12 in the shape of a precious gourd corresponding to the shape of the bottom layer is firmly installed in the handle hole 10, ensuring safe and reliable clinical use. On the other hand, the design of the upper and lower two layers can reduce the overall thickness of the positioning seat 12, and the design of the positioning seat 12 with a thicker front and a thinner rear makes the positioning seat 12 more likely to slip off from the handle hole 10 and the inclined pad 11 and self-destruct under the forward thrust of the push handle, transmitted through the positioning rod 13 and under the lever action of the inclined pad 11, so it cannot be reused, achieving the purpose of preventing cross-infection of iatrogenic diseases.

[0127] Continue to refer to Figure 22 , according to a preferred embodiment, the shaft pin 4 is large at both ends, small in the middle, solid in the middle and lower part, and has a slotted and elastic upper middle part. The diameter of the edge of the slot is slightly larger than the diameter of the slot. The whole is shaped like a dumbbell. For a vaginal dilator with such a dumbbell-shaped shaft pin 4, it is easy to install, and it is easy and convenient to rotate during clinical use, flexible and free, improving the working efficiency of doctors.

[0128] Example 6

[0129] Self-destructing disposable vaginal speculum

[0130] First refer to the appendix Figure 23 and 26 , the structure of the self-destructing disposable vaginal dilator in this embodiment is basically the same as the structure of the vaginal speculum in Example 2. The self-destructing disposable vaginal speculum also includes an upper dilating piece and a lower dilating piece. The upper dilating piece includes an upper wing 31 and a pressing handle 35 that is integrated with the upper wing 31 and extends left and right in an arc from the rear end of the upper wing and continues to extend downward after being connected in the middle position; the lower dilating piece includes a lower wing 32 and a handle 36 that is integrated with the lower wing 32 and extends downward in the middle position. The two sides of the rear ends of the upper wing 31 and the lower wing 32 are respectively connected through shaft holes 33 and shaft pins 34 to form a viewing opening 49 between the upper and lower wings. Therefore, the upper and lower wings can be opened and closed by controlling the pressing handle 35. As Figure 26 shown, a pressing handle hole 39 is provided on the pressing handle 35. A handle hole 40 and an inclined pad 41 are provided on the handle 36, and the inclined pad 41 is at the end of the handle hole 40.

[0131] Please refer to the appendix Figures 23-2610. The vaginal dilator of this embodiment includes an expansion positioning and disfiguring device, which is a spiral positioning and disfiguring device, which cleverly combines the expansion positioning function for fixing the upper wing 31 and the lower wing 32 in the open state with the disfiguring function after use. The expansion positioning and disfiguring device includes an expansion positioning device, which includes a positioning seat 42 installed in the handle hole 40 and the inclined pad 41, and a threaded screw 43 extending upward. The threaded screw 43 and the nut 44 cooperate, and the doctor can adjust and fix it according to the size of the inspected visual field or the surgical range. The expansion positioning and destruction device further includes a self-destruct strip 46, which is located on the positioning seat 42 in front of the screw 43. The root of the screw 43 is provided with a screw front dome 48 for accommodating the self-destruct strip 46, and the top is a push handle 45. The screw 43 and the self-destruct strip 46 are passed through the handle hole 40, and the screw 43 is further passed through the handle hole, and the positioning seat 42 is installed in the handle hole 40 and the inclined pad 41, and at least one of the self-destruct strip 46 and the screw 43 should be elastic.

[0132] The structure of the vaginal dilator of this embodiment is different from that of the vaginal dilator of Example 2 in that the vaginal dilator of this embodiment also includes an expansion self-destruction device, which includes a thin sheet 37 provided on the push handle 35 and a stamping strip 38 provided on the gripping handle 36, and has an expansion self-destruction function that can destroy the shape during expansion. During operation, the stamping strip can automatically puncture the thin sheet to achieve the purpose of self-destruction.

[0133] According to a preferred embodiment, continue to refer to the attached Figure 25 and 10 The self-destruct strip 46 is a short and small strip that is slightly inclined forward as a whole and is located above the positioning seat 42. It is also an extension of the positioning seat 42. The front is close to the front wall of the handle hole 40, and the back is the front dome 48 of the screw.

[0134] On the one hand, due to the front and rear tension of the self-destruct strip 46 and the screw rod 43, the positioning seat 42 is more firmly fixed in the handle hole 40; on the other hand, when the self-destruct strip 46 is subjected to the force of the push handle 45 together with the screw rod 43, its belly is squeezed by the front wall of the handle hole 40, and the leverage of the screw rod 43 through the positioning seat 42 and the inclined pad 41 causes the positioning seat 42 to slip, causing the root of the self-destruct strip 46 to break instantly. Therefore, the self-destruct strip 46 breaks almost at the same time as the positioning seat 42 slips out of the handle hole 40 and the inclined pad 41. Due to the slipping of the positioning seat 42, the screw rod 43 is out of place, and the screw 43 and the nut 44 are inevitably unable to be screwed together to expand and position. All this happens and is completed in an instant. Moreover, the self-destructing strip 46 is broken at the root, so even if the self-destructing strip 46 is broken, it is still connected to the positioning seat 42 and will not fall off alone; after the screw rod 43 is out of position, it is always connected to the positioning seat 42 and will not fall off alone, so the operation is very time-saving and labor-saving, simple, practical, safe and effective.

[0135] According to a preferred embodiment, the head end of the self-destruction strip 46 extends forward to form a head crown 47, such that the self-destruction strip 46 with the head crown 47 is laterally shaped like a "7". According to a preferred embodiment, the handle 36 is also optionally provided with a protrusion 50, which is arranged in front of the handle hole 40. The head crown 47 is buckled with the protrusion 50 in front of the handle hole 40 located in the middle of the handle 36. The self-destruction strip 46 designed with the head crown 47 is more likely to break and self-destruct when pressed by the front wall of the handle hole 40. Moreover, when the self-destruction strip 46 with the head crown 47 is broken by extrusion, it still breaks at the root, and the operation is also time-saving, labor-saving, simple, convenient, safe and effective.

[0136] Continue to refer to Figure 23 , according to a preferred embodiment, before clinical use, the upper wing 31 and the lower wing 32 are in a closed state. When the clinical use begins, the doctor inserts the vaginal speculum into the vagina, and the upper wing 31 and the lower wing 32 are still in a closed state. At this time, it can be seen that the self-destruction strip 46 is intact, and the thin sheet 37 on the push button 35 of the dilation self-destruction device is also intact, and they are all in their normal positions.

[0137] Continue to refer to Figure 24 , when in clinical use, the doctor presses the push button 35, the upper wing 31 and the lower wing 32 are expanded to the required visual field, and the nut 44 is turned into the screw rod 43 for fixation. The doctor starts to examine, diagnose or perform surgery. At this time, the self-destruction strip 46 is still intact. The puncture strip 38 on the handle 36 will simultaneously puncture the thin sheet 37 on the push button 35 corresponding to the position of the puncture strip 38, and the dilation self-destruction device is automatically deformed and cannot be restored.

[0138] Continue to refer to Figure 25 , according to a preferred embodiment, when the clinical examination or surgery is completed, the doctor removes the dilator, withdraws the nut backward to the position where the upper and lower wings are closed and presses the push handle 45 or the nut 44. Due to the thrust and elastic action of the screw rod 43, the screw rod 43 and the anterior fornix 48 move forward to cause the self-destruction strip 46 to be pressed by the front wall of the handle hole 40, and its root will immediately break and cannot be restored.

[0139] According to a preferred embodiment, continue to refer to Figure 26 , the middle part of the handle 36 is provided with a double-layer handle hole 40, the bottom layer is larger than the upper layer, and an inclined pad 41 is provided at the rear end of the hole bottom. This design with attention to details makes the bottom layer have a larger space than the upper layer on the one hand.

[0140] According to a preferred embodiment, the bottom layer of the handle hole 40 is designed in the shape of a calabash. The positioning seat 42 in the shape of a calabash corresponding to the shape of the bottom layer is firmly installed in the handle hole 40, ensuring safe and reliable clinical use. On the other hand, the design of the upper and lower layers can reduce the overall thickness of the positioning seat 42, and the design of the positioning seat 42 with a thicker front and a thinner rear makes the positioning seat 42 more likely to slip off from the handle hole 40 and the inclined pad 41 and self-destruct under the action of the forward thrust of the push handle through the transmission of the screw 43 and the lever action of the inclined pad 41. Therefore, it cannot be reused, achieving the purpose of preventing cross-infection of iatrogenic diseases.

[0141] Continue to refer to Figure 26 , according to a preferred embodiment, the shaft pin 34 is large at both ends, small in the middle, solid in the middle and lower part, and has a slotted and elastic upper middle part. The diameter of the edge of the slot is slightly larger than the diameter of the slot. The whole is shaped like a dumbbell. The vaginal speculum with such a dumbbell-shaped shaft pin 34 is easy to install, easy and convenient to rotate during clinical use, flexible and free, improving the working efficiency of doctors.

[0142] Example 7

[0143] Surgical and examination self-destructive vaginal dilators

[0144] First, refer to the appendix Figures 27-29 , the structure of the vaginal dilator in this embodiment is basically the same as that of the vaginal dilator in Example 3. The side hook self-destructive disposable vaginal dilator also includes an upper wing 51 and a push handle 55 integrated with the upper wing 51 and extending backward, a lower wing 52 and a handle 56 integrated with the lower wing 52 and extending backward along one end of the upper wing. The two sides at the rear ends of the upper wing 51 and the lower wing 52 are respectively connected through shaft holes (not marked) and shaft pins 54 to form a visual field opening between the upper and lower wings. Therefore, the upper wing 51 and the lower wing 52 can be opened and closed by controlling the push handle 55. The push handle 55 is provided with a push handle hole 59 and a positioning buckle 68, and the positioning buckle 68 is at the end of the push handle hole 59. The handle 56 is provided with a handle hole 60 and an inclined pad 61, which is arranged at the position on the same side as the push handle 55, and the inclined pad 61 is at the end of the handle hole 60.

[0145] Please refer to the appendix Figures 27-29 and 14. The vaginal dilator in this embodiment includes a dilation positioning and self-destruction device, which is a hook positioning self-destruction device, and perfectly combines the dilation positioning function for fixing the open state of the upper wing 51 and the lower wing 52 and the self-destruction function that can self-destruct when use is completed. The dilation positioning and self-destruction device is a dilation positioning device, which includes a positioning seat 62 installed in the handle hole 60 and the inclined pad 61, and an arc-shaped positioning rod 63 extending upward. The upper end of the rod is a push handle 65, and a positioning hook 64 is arranged on the back of the rod, which meshes with the positioning buckle 68 at the end of the push handle hole 59. Doctors can expand, adjust and fix according to the size of the visual field to be examined or the surgical scope.

[0146] The difference in the structure of the vaginal dilator in this embodiment from that in Embodiment 3 lies in that the vaginal dilator in this embodiment further includes a dilation self-destruction device, which comprises a thin sheet 57 provided on the pressing handle 55 and a puncturing strip 58 provided on the holding handle 56, having the dilation self-destruction function of being deformable upon dilation. During the dilation process, the puncturing strip 58 on the holding handle 56 immediately punctures the thin sheet 57 on the pressing handle 55 and self-destructs.

[0147] Please refer to the appendix Figure 29 and 14 , the dilation positioning and destruction device further includes a self-destruction strip 66, which is located in front of the positioning rod 63 on the positioning seat 62. The self-destruction strip 66 is a relatively short and small strip-shaped object that is slightly inclined forward as a whole. Like the positioning rod 63, it is also an upward extension of the positioning seat 62, located above the positioning seat 62. The front is closely attached to the front wall of the holding handle hole 60, and the back is the positioning rod 63. A positioning hook 64 that can engage with the positioning buckle 68 at the end of the pressing handle hole 59 is provided on the back of the rod. The positioning rod 63 and the self-destruction strip 66 pass through the holding handle hole 60 beside the outer side of the middle part of the holding handle, the positioning rod 63 continues to pass through the pressing handle hole 59, and the positioning seat 62 is installed in the holding handle hole 60 and the inclined pad 61. At least one of the self-destruction strip 66 and the positioning rod 63 should have elasticity. Due to the front and back tensions of the self-destruction strip 66 and the positioning rod 63, the positioning seat 62 is more firmly fixed at the bottom layer of the holding handle hole 60.

[0148] When the doctor pushes the push handle 65 after use, the self-destruction strip 66 is subjected to the force of the push handle 65 together with the positioning rod 63. Its abdomen is squeezed by the front wall of the holding handle hole 60, causing the root to "fracture" and break immediately. Coupled with the impact force when the positioning seat 62 slips due to the lever action of the positioning rod 63 passing through the positioning seat 62 and the inclined pad 61, the root of the self-destruction strip 66 immediately "fractures" and breaks. Therefore, the "fracture" and break of the self-destruction strip 66 almost occur simultaneously with the slippage of the positioning seat 62 from the holding handle hole 60 and the inclined pad 61. Due to the slippage of the positioning seat 62, the positioning rod 63 is out of position, and the positioning hook 64 can no longer engage with the positioning buckle 68 for dilation and positioning. All of this occurs and is completed in an instant. Moreover, the first part of the self-destruction strip 66 to break is at the root, resembling a "fracture". Therefore, even if the self-destruction strip 66 breaks, it is still connected to the positioning seat 62 and will not fall off alone; after the positioning rod 63 is out of position, it is still connected to the positioning seat 62 and will not fall off alone. Therefore, when the doctor takes it out, it is still an integral vaginal dilator, just like a disposable vaginal dilator without a dilation positioning and destruction device. Thus, the operation is simple and labor-saving, convenient and practical, safe and effective.

[0149] Please refer to Figure 27 , 29, 14. According to a preferred embodiment, the head end of the self-destructing strip 66 extends forward to form a head crown 67, such that the self-destructing strip 66 with the head crown 67 is laterally shaped like a '7'. According to a preferred embodiment, the handle 56 is also optionally provided with a protrusion 70. The protrusion 70 is arranged in front of the handle hole 60. The head crown 67 just fits with the protrusion 70 in front of the handle hole 60 located in the middle of the side of the handle 56. The self-destructing strip 66 designed with the head crown 67 is more likely to break and self-destruct when squeezed by the front wall of the handle hole 60. Moreover, when the self-destructing strip 66 with the head crown 67 is squeezed and broken, the 'fracture' break still occurs at the root, so the operation is also time-saving, labor-saving, simple, convenient, safe and effective.

[0150] Generally, for the inspection-type vaginal speculum, the handle, the dilation self-destruction device, and the dilation positioning and deforming device are arranged on the right side, as Figures 27-29 shown; for the surgical-type vaginal speculum, the handle, the dilation self-destruction device, and the dilation positioning and deforming device are arranged on the left side (not shown in the figure, only the Figures 27-29 left and right side positions are different from the structure shown, and it is similar to the Figures 33-34 shown structure, the difference being that it includes a thin sheet and a puncture strip). For the inspection-type and surgical-type vaginal speculums, the upper wing and the lower wing of different shapes are designed according to the usage requirements. For example, the upper and lower wings of the inspection-type are long and narrow, shaped like a duck's bill, and the upper and lower wings of the surgical-type are short and wide, shaped like a bird's beak. Since the dilation positioning and deforming device is designed on one side of the handle (the pressing handle 55 and the handle 56), as described above, generally the dilation positioning and deforming device of the surgical-type is designed on the left side of the handle, and the inspection-type is designed on the right side of the handle. This design expands the vision and space of the entire speculum, and is more beneficial for the doctor to operate. When dilating, the opening angle of the upper and lower wings can reach >40°, which is very beneficial for various examinations and surgeries in obstetrics and gynecology, beneficial for fully exposing the vagina and cervix, and at the same time beneficial for protecting the vaginal orifice from excessive dilation. It is more beneficial for diagnosis and treatment and surgery in clinical use, and is safer and more effective.

[0151] Although the positions of the pressing handle and the dilation positioning and deforming device of the surgical-type speculum are different from those of the inspection-type speculum (specifically, the surgical-type is on the left side and the inspection-type is on the right side), the usage operation is basically the same as the usage process of the above-mentioned inspection-type speculum. The following combines Figure 14 、 27 -29 to illustrate the usage process. Continue to refer to Figure 27 、 14 , according to a preferred embodiment, before clinical use, the upper wing 51 and the lower wing 52 are in a closed state. When clinical use starts, the doctor inserts the vaginal speculum into the vagina, and the upper wing 51 and the lower wing 52 are still in a closed state. At this time, it can be seen that the self-destructing strip 66 is intact, and the thin sheet 57 on the pressing handle 55 of the dilation self-destruction device is also intact. They are all in their normal positions. Continue to refer to Figures 27-28, 14. When in clinical use, the doctor presses the handle 55, the upper wing 51 and the lower wing 52 are expanded to the required visual field, the positioning buckle 68 enters and engages with the positioning hook 64 to be fixed, and the doctor starts the examination, diagnosis or operation. At this time, the self-destruction strip 66 is also intact. During the expansion process, the puncture strip 58 on the handle 56 immediately punctures the thin sheet 57 on the handle 55 and self-destructs. Please refer to Figure 29 , According to a preferred embodiment, when the clinical examination or operation is completed, the doctor presses the push handle 65. Due to the thrust and elastic action of the positioning rod, the positioning rod moves forward, causing the self-destruction strip 66 to be squeezed by the front wall of the upper middle part of the handle hole 60 that protrudes slightly backward. Its root will immediately "fracture" and break and cannot be restored.

[0152] According to a preferred embodiment, beside the outer side of the middle part of the handle 56, at a position corresponding to the handle hole, there is a double-layer handle hole 60. The bottom layer is larger than the upper layer, and there is an inclined pad 61 at the rear end of the hole bottom. This design that pays attention to details can, on the one hand, make the bottom layer have a larger space than the upper layer. According to an embodiment of the present invention, the bottom layer of the handle hole 60 is designed in the shape of a gourd, and the positioning seat 62 in the shape of a gourd that matches the shape of the bottom layer can be firmly installed in the bottom layer of the handle hole 60, which is both beautiful and practical, and ensures the safety and reliability of clinical use.

[0153] On the other hand, the design of the upper and lower layers can reduce the overall thickness of the positioning seat 62, and the design of the positioning seat 62 with a thicker front and a thinner rear makes the positioning seat 62 easier to slip out of the handle hole 60 and the inclined pad 61 under the forward thrust of the push handle, resulting in the misalignment of the positioning rod 63. The positioning rod 63 disengages from the positioning buckle 68 and can no longer be closely engaged with the positioning buckle, thus losing the functions of expansion and positioning. The three self-destruct at the same time and cannot be restored, realizing that it can only be used once, achieving the purpose of preventing cross-infection of iatrogenic diseases.

[0154] Continue to refer to Figures 27-29 , According to a preferred embodiment, the shaft pin 54 is large at both ends, small in the middle, solid in the middle and lower part, and has a split and elastic upper middle part. The diameter of the edge of the split is slightly larger than the diameter of the split. The whole is shaped like a dumbbell. The vaginal dilator with such a dumbbell-shaped shaft pin 54 is easy to install, and is easy and convenient to rotate during operation, flexible and free, improving the doctor's work efficiency.

[0155] Example 8

[0156] Surgical and examination type disposable vaginal dilator

[0157] First refer to the appendix Figures 30-32, the structure of the vaginal dilator in this embodiment is basically the same as that of the vaginal dilator in Embodiment 4. The lateral spiral self-destructive disposable vaginal dilator also includes an upper wing 71 and a push handle 75 integrated with the upper wing 71 and extending backward along one end of the side of the upper wing, a lower wing 72 and a grip handle 76 integrated with the lower wing 72 and extending backward. The two sides at the rear ends of the upper wing 71 and the lower wing 72 are respectively connected by a pin shaft 74 to form a viewing port 89 between the upper and lower wings. Therefore, the upper wing 71 and the lower wing 72 can be opened and closed by controlling the push handle 75. There is a push handle hole 79 on the push handle 75. There are a grip handle hole 80 and an inclined pad 81 on the grip handle 76, and the inclined pad 81 is at the end of the grip handle hole 80.

[0158] The vaginal dilator in this embodiment includes an expansion positioning and self-destructing device, which is a spiral positioning and self-destructing device, and combines the expansion positioning function for fixing the open state of the upper wing 71 and the lower wing 72 and the self-destructing function that can be self-destructed after use perfectly and ingeniously. The expansion positioning and self-destructing device includes an expansion positioning device, which includes a positioning seat 82 installed in the grip handle hole 80 and the inclined pad 81. The positioning seat 82 extends upward into a screw rod 83. The screw rod 83 with threads cooperates with a nut 84, and the doctor can expand, adjust and fix according to the size of the inspected field of view or the surgical scope. Please refer to Figure 32 , the expansion positioning and self-destructing device further includes a self-destructing strip 86. On the positioning seat 82, in front of the screw rod 83, there is a screw rod anterior fornix 88 for arranging the self-destructing strip 86 at the lower part of the screw rod, and the top of the screw rod is a push handle 85.

[0159] The difference between the structure of the vaginal dilator in this embodiment and the structure of the vaginal dilator in Embodiment 4 is that the vaginal dilator in this embodiment further includes an expansion self-destructing device, which includes a thin sheet 77 provided on the push handle 75 and a puncture strip 78 provided on the grip handle 76, and has an expansion self-destructing function that can be self-destructed during expansion. During expansion, the puncture strip 78 provided on the grip handle 76 will surely puncture the thin sheet 77 on the push handle 75, and the expansion self-destructing device can be self-destructed, making it obvious at a glance that the dilator has been clinically used and cannot be used a second time.

[0160] Refer to the appendix Figure 32 and 18, the self-destructing strip 86 is a relatively short, small and slightly forward-tilted strip, which is also an upward extension of the positioning seat 82 like the screw 83. It is located above the positioning seat 82, with its front closely attached to the front wall of the handle hole 80 and its rear being the front vault 88 of the screw. The screw 83 and the self-destructing strip 86 pass through the handle hole 80, and the screw 83 continues to pass through the pressing handle hole 79. The positioning seat 82 is installed in the handle hole 80 and the inclined pad 81, and at least one of the self-destructing strip 86 and the screw 83 should be elastic. Due to the front and rear tensions of the self-destructing strip 86 and the screw 83, the positioning seat 82 is more firmly fixed in the bottom layer of the handle hole 80 and the inclined pad 81. When the doctor pushes the pushing handle 85 after taking out the dilator after use, the self-destructing strip 86 is subjected to the force exerted by the pushing handle 85 together with the screw 83, and its abdomen is squeezed by the front wall of the handle hole 80, causing the root to "fracture" and break immediately. Coupled with the impact force caused by the lever action of the screw 83 passing through the positioning seat 82 and the inclined pad 81 when the positioning seat 82 slips, the root of the self-destructing strip 86 immediately "fractures" and breaks. Therefore, the "fracture" and break of the self-destructing strip 86 almost occur simultaneously with the slipping of the positioning seat 82 from the handle hole 80 and the inclined pad 81. Due to the slipping of the positioning seat 82, the screw 83 is out of position, and the screw 83 can no longer be screwed and expanded and positioned with the nut 84. All of this occurs and is completed in an instant, and the broken part of the self-destructing strip 86 is almost at the root, resembling a "fracture". Therefore, even if the self-destructing strip 86 breaks, it is still connected to the positioning seat 82 and will not fall off alone; after the screw 83 is out of position, it is still connected to the positioning seat 82 and will not fall off alone. Therefore, the operation is simple and labor-saving, convenient and practical, safe and effective.

[0161] Please refer to Figure 32 , 18 , according to a preferred embodiment, the head end of the self-destructing strip 86 extends forward to form a head crown 87, so that the self-destructing strip 86 with the head crown 87 is horizontally shaped like a "7". According to a preferred embodiment, the handle 76 is optionally provided with a protrusion 90, and the protrusion 90 is arranged in front of the handle hole 80. The head crown 87 just fits with the protrusion 90 in front of the handle hole 80 located in the middle of the side of the handle 76. The self-destructing strip 86 designed with the head crown 87 is more likely to break and self-destruct when squeezed by the front wall of the handle hole 80. Moreover, when the self-destructing strip 86 with the head crown 87 is squeezed and broken, the "fracture" still occurs at the root. Therefore, the operation is also time-saving and labor-saving, simple and convenient, safe and effective.

[0162] Generally, for the inspection type vaginal dilator, the pressing handle, the dilation self-destruction device, and the dilation positioning and deforming device are arranged on the right side, as Figures 30-32 shown; for the surgical type vaginal dilator, the pressing handle, the dilation self-destruction device, and the dilation positioning and deforming device are arranged on the left side (not shown in the figure, and Figures 30-32 the shown structure only has a difference in the left and right positions, and Figure 35The structures shown are similar, except that they include a thin sheet and a puncturing strip). For inspection and surgical vaginal dilators, upper and lower wings of different shapes are designed according to the usage requirements. For example, the upper and lower wings of the inspection type are long and narrow, shaped like a duck's bill, and the upper and lower wings of the surgical type are short and wide, shaped like a bird's bill. Since the dilating positioning and deforming device is designed on one side of the handle (i.e., the pressing handle 75 and the gripping handle 76), clinically, the surgical dilating positioning and deforming device is usually designed on the left side of the handle, and the inspection type is designed on the right side of the handle. This design expands the vision and space of the entire dilator. When dilating, the opening angle of the upper and lower wings can reach >40°, which is very beneficial for various examinations and surgeries in obstetrics and gynecology. It is beneficial to fully expose the vagina and cervix, and at the same time, it is beneficial to protect the vaginal orifice from excessive dilation, making clinical use more beneficial for diagnosis and treatment and surgery, and more safe and effective.

[0163] Although the pressing handle and the setting position of the dilating positioning and deforming device of the surgical dilator are different from those of the inspection dilator (specifically, the surgical type is on the left side and the inspection type is on the right side), the usage operation is basically the same as the usage process of the above-mentioned inspection dilator. The following combines Figure 18 、 30 -32 to illustrate the usage process. Continue to refer to Figure 30 、 18 , according to a preferred embodiment, before clinical use, the upper wing 71 and the lower wing 72 are in a closed state. When clinical use begins, the doctor inserts the dilator into the vagina, and the upper wing 71 and the lower wing 72 are still in a closed state. At this time, it can be seen that the self-destructing strip 86 is intact, and the thin sheet 77 of the dilating self-destructing device located on the pressing handle 75 is also intact, and they are all in their normal positions. Continue to refer to Figures 30-31 、18. When in clinical use, the doctor presses the pressing handle 75, and the upper wing 71 and the lower wing 72 are dilated to the required vision, and the nut 84 is rotated into the screw rod 83 to be fixed. The doctor starts to check, diagnose, or perform surgery. At this time, the self-destructing strip 86 is still intact. And the puncturing strip 78 located on the gripping handle 76 will simultaneously puncture the thin sheet 77 on the pressing handle 75 corresponding to the position of the puncturing strip 78, and the dilating self-destructing device realizes automatic deformation and cannot be restored. Please refer to Figure 32 , according to a preferred embodiment, when the clinical examination or surgery is completed, the doctor removes the dilator, withdraws the nut 84 backward until the upper and lower wings are closed. At this time, the push handle 85 can be pushed. Due to the thrust of the screw rod 83 and the elastic acting force, the self-destructing strip 86 is squeezed by the front wall slightly protruding backward in the middle of the upper layer of the gripping handle hole 80, and its root will immediately "fracture" and cannot be restored.

[0164] According to a preferred embodiment, please continue to refer to Figure 30, beside the outer side of the middle part of the handle 76, a double-layer handle hole 80 is provided at a position corresponding to the push handle hole 79. The bottom layer is larger than the upper layer, and an inclined pad 81 is provided at the rear end of the bottom of the hole. This design that pays attention to details can, on the one hand, make the bottom layer have a larger space than the upper layer. According to an embodiment of the present invention, the bottom layer of the handle hole 80 is designed in the shape of a precious gourd, and the positioning seat 82 in the shape of a precious gourd that fits the shape of the bottom layer can be firmly installed in the bottom layer of the handle hole 80, which is both beautiful and practical, and ensures the safety and reliability of clinical use.

[0165] On the other hand, the design of the upper and lower layers can reduce the overall thickness of the positioning seat 82, and the design of the positioning seat 82 with a thicker front and a thinner rear makes the positioning seat 82 more likely to slip out of the handle hole 80 and the inclined pad 81 and the screw 83 lose its position under the action of the forward thrust of the push handle 85, and then the screw 83 cannot be tightly screwed with the nut 84, thus losing the functions of expansion and positioning. All three are "self-destroyed" at the same time and cannot be restored, so it can only be used once, achieving the purpose of preventing cross-infection of iatrogenic diseases.

[0166] Continue to refer to Figures 30-32 , according to a preferred embodiment, the shaft pin 74 is large at both ends, small in the middle, solid in the middle and lower part, and has a split and elastic middle and upper part. The diameter of the edge of the split is slightly larger than the diameter of the split, and the whole is in the shape of a dumbbell. The vaginal dilator with such a dumbbell-shaped shaft pin 74 is not only easy to assemble, but also easy and convenient to rotate during clinical use, flexible and free, improving the working efficiency of doctors.

[0167] The expansion positioning and self-destruction device and / or the expansion self-destruction device of Embodiments 1-8 are also suitable for other double-wing, three-wing, four-wing and multi-wing vaginal speculums. In addition, the disposable vaginal dilator of Embodiments 1-8 can be made of biodegradable materials to reduce pollution, reduce damage to human health and be beneficial to environmental protection.

[0168] All the documents mentioned in the present invention are cited in this application as references, just as each document is cited separately as a reference. In addition, it should be understood that after reading the above teachings of the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims of this application.

Claims

1. A disposable vaginal dilator, comprising an upper dilating piece and a lower dilating piece, wherein the upper dilating piece includes: The upper wing and the pressing handle connected thereto; the lower expansion piece includes a lower wing and a gripping handle connected thereto. The two sides of the rear ends of the upper wing and the lower wing are respectively connected by a pin to form a viewing opening between the upper and lower wings. It is characterized in that the vaginal dilator further includes a dilating, positioning and destroying device, and the dilating, positioning and destroying device is a hook-and-buckle positioning self-destruction device or a screw positioning immediate destruction device; The pressing handle is provided with a pressing handle hole and a positioning buckle. The positioning buckle is arranged at the end of the pressing handle hole. The gripping handle is provided with a gripping handle hole and an inclined pad. The inclined pad is at the end of the gripping handle hole. The hook-and-buckle positioning self-destruction device includes a positioning seat. A self-destruction strip and a positioning rod are arranged in front and at the back on the positioning seat. A positioning hook capable of meshing with the positioning buckle at the end of the pressing handle hole is arranged on the back of the positioning rod. Among them, the positioning seat is placed in the gripping handle hole and the inclined pad, and the positioning rod passes through the pressing handle hole on the pressing handle; the screw positioning immediate destruction device includes a positioning seat. A self-destruction strip and a screw capable of being screwed and positioned with a nut are arranged in front and at the back on the positioning seat. The lower part of the screw is provided with a screw anterior fornix capable of accommodating the self-destruction strip. Among them, the positioning seat is installed in the gripping handle hole and the inclined pad, and the screw passes through the pressing handle hole on the pressing handle.

2. The disposable vaginal dilator according to claim 1, characterized in that, The upper expansion piece includes: an upper wing, and a pressing handle that extends left and right in an arc from the rear end of the upper wing and is integrally connected in the middle position and then continues to extend downward; the lower expansion piece includes: a lower wing, and a gripping handle that is integral with the lower wing and extends downward in the middle position.

3. The disposable vaginal speculum according to claim 1, characterized in that, The upper expansion piece includes: an upper wing, and a pressing handle that is integral with the upper wing and extends backward along one end of the upper wing. The pressing handle is arranged on the right or left side of the dilator; the lower expansion piece includes: a lower wing and a gripping handle that is integral with the lower wing and extends downward from the rear end of the lower wing.

4. The disposable vaginal speculum according to claim 1, wherein The upper wing and the pressing handle are integral.

5. The disposable vaginal speculum according to claim 1, characterized in that, The lower wing and the gripping handle are integral.

6. The disposable vaginal speculum according to claim 1, characterized in that, A pin is provided between the upper wing and the pressing handle, and a pin hole is provided between the lower wing and the gripping handle; or a pin hole is provided between the upper wing and the pressing handle, and a pin is provided between the lower wing and the gripping handle.

7. The disposable vaginal speculum according to claim 1, characterized in that, The dilating, positioning and destroying device is a hook-and-buckle positioning self-destruction device. The hook-and-buckle positioning self-destruction device includes a positioning seat fixed on the gripping handle hole of the gripping handle. A self-destruction strip and a positioning rod are arranged in front and at the back on the positioning seat. A positioning hook capable of meshing with the positioning buckle at the end of the pressing handle hole is arranged on the back of the positioning rod.

8. The disposable vaginal dilator according to claim 7, wherein, The positioning rod passes through the pressing handle hole on the pressing handle, and the positioning hook meshes with the positioning buckle.

9. The disposable vaginal speculum according to claim 1, wherein The dilating, positioning and destroying device is a screw positioning immediate destruction device. The screw positioning immediate destruction device includes a positioning seat fixed on the gripping handle hole of the gripping handle. A self-destruction strip and a screw are arranged in front and at the back on the positioning seat. The lower part of the screw is provided with a screw anterior fornix capable of accommodating the self-destruction strip. The screw passes through the pressing handle hole on the pressing handle and is screwed and fixed with a nut.

10. The disposable vaginal dilator according to claim 1, wherein, The upper expansion piece includes: an upper wing, and a pressing handle that extends left and right in an arc from the rear end of the upper wing and is integrally connected in the middle position and then continues to extend downward; The lower expansion piece includes: a lower wing, and a gripping handle that is integral with the lower wing and extends downward in the middle position. The gripping handle is provided with a gripping handle hole and an inclined pad. The inclined pad is at the end of the gripping handle hole; The expansion positioning and destruction device is a hook buckling positioning self-destruction device. The hook buckling positioning self-destruction device includes a positioning seat. A self-destruction strip and a positioning rod are arranged front and back on the positioning seat. A positioning hook that can engage with the positioning buckle at the end of the button hole is provided on the back of the positioning rod. Among them, the positioning seat is arranged in the handle hole and the inclined pad, and the positioning rod passes through the button hole on the button handle.

11. The disposable vaginal dilator according to claim 1, characterized in that, The upper dilator blade includes: an upper wing, and a button handle that is integrated with the upper wing and extends backward along one end of the upper wing. A button hole and a positioning buckle are provided on the button handle, and the positioning buckle is arranged at the end of the button hole. The lower dilator blade includes: a lower wing, and a handle that is integrated with the lower wing and extends downward from the rear end of the lower wing.

12. The disposable vaginal dilator according to claim 1, wherein, The upper dilator blade includes: an upper wing, and a button handle that extends left and right in an arc from the rear end of the upper wing and continues to extend downward after being integrated in the middle position. A button hole is provided on the button handle. The lower dilator blade includes: a lower wing, and a handle that is integrated with the lower wing and extends downward in the middle position. A handle hole and an inclined pad are provided on the handle, and the inclined pad is at the end of the handle hole.

13. The disposable vaginal dilator according to claim 1, characterized in that, The upper dilator blade includes: an upper wing, and a button handle that is integrated with the upper wing and extends backward along one end of the upper wing. A button hole is provided on the button handle. The lower dilator blade includes: a lower wing, and a handle that is integrated with the lower wing and extends downward from the rear end of the lower wing. A handle hole and an inclined pad are provided on the handle, and the inclined pad is at the end of the handle hole. The expansion positioning and destruction device is a spiral positioning and immediate destruction device. The spiral positioning and immediate destruction device includes a positioning seat. A self-destruction strip and a screw rod that can be screwed and positioned with a nut are arranged front and back on the positioning seat. The lower part of the screw rod is provided with a screw rod front vault for placing the self-destruction strip. Among them, the positioning seat is installed in the handle hole and the inclined pad, and the screw rod passes through the button hole on the button handle.

14. The disposable vaginal speculum according to any one of claims 1-13, characterized in that, The vaginal dilator further includes an expansion self-destruction device. The expansion self-destruction device includes a thin sheet provided on the button handle and a puncture strip provided on the handle.

15. The disposable vaginal dilator according to any one of claims 1-13, characterized in that, The shaft pin is large at both ends, small in the middle, solid in the middle and lower parts, and has a split and elastic upper part. The diameter of the edge of the split is slightly larger than the diameter of the split, and the whole is shaped like a dumbbell.

16. The disposable vaginal dilator according to any one of claims 10-13, characterized in that, The top of the self-destruction strip extends forward to form a crown. Optionally, a protrusion is also provided on the handle, which is arranged in front of the handle hole, and the crown is buckled with the protrusion located in front of the handle hole.

17. The disposable vaginal dilator according to any one of claims 7-8 and 10-11, characterized in that, The positioning rod is integrally arc-shaped, with a push handle at the top, a serrated positioning hook in the middle of the back, and the lower part is relatively flat and inclined forward.

18. The disposable vaginal speculum according to claim 1, wherein, The expansion positioning and destruction device is also suitable for other double-wing, three-wing, four-wing or multi-wing vaginal dilators.

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