A vaginal dilator for gynecological observation
By expanding the multi-flap design and snap-fit structure of the outer shell and inner plug, the problem of vaginal wall contraction and limited field of vision caused by duckbill dilators is solved, providing a vaginal dilator with uniform force and open field of vision, improving the comfort and efficiency of the examination.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI HONGBA MEDICAL TECH CO LTD
- Filing Date
- 2025-08-14
- Publication Date
- 2026-07-14
AI Technical Summary
Existing duckbill-type vaginal speculum causes the left and right vaginal walls to contract during examination, resulting in a limited field of view, patient discomfort, and inconvenience in the examination.
The design employs an expansion shell and an expansion inner plug. One end of the expansion shell is equipped with a petal-shaped guide plate, and the inner plug includes an expansion cylinder and a viewing hole. They are connected by a snap-fit mechanism to ensure uniform force on the vaginal wall and avoid obstruction of the view.
This ensures even pressure distribution on the vaginal wall, reduces patient discomfort, maintains an open examination field, facilitates doctor's operation, and avoids limited field of vision.
Smart Images
Figure CN224483968U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of vaginal speculum technology, specifically a vaginal speculum for gynecological observation. Background Technology
[0002] Currently, the disposable sterile vaginal speculum commonly used on the market is called a speculum. The most common speculum is the duckbill type. The duckbill speculum mainly consists of an upper blade, a lower blade, and a handle. When examining a patient, the gynecologist holds the handle and inserts the upper and lower blades into the vagina and opens them to provide the doctor with a field of vision for examination. However, the upper and lower blades apply uneven pressure to the vaginal wall. This is because the upper blade is close to the upper part of the vaginal wall, and the lower blade is close to the lower part. During the examination, the patient may experience pain, pulling, and other discomfort. At the same time, the upper and lower blades can open the vagina vertically, and the separation direction of the upper and lower blades can easily lead to excessive expansion, causing discomfort to the patient. During the examination, the vaginal walls on both sides will naturally contract inward due to the body's reaction. The inward contraction can obstruct the doctor's view, which is very detrimental to the doctor's examination.
[0003] In summary, the above-mentioned duckbill-type dilator, which applies pressure from both above and below, causes the left and right vaginal walls to contract, making the doctor's field of vision narrow and limited, and making it impossible to make an accurate judgment for the patient. Therefore, there is an urgent need for a dilator that can improve the doctor's field of vision for gynecological examinations, so as to avoid the problem of limited field of vision caused by the contraction of the left and right vaginal walls. Utility Model Content
[0004] The problem to be solved is to provide a speculum that facilitates the doctor's field of vision during gynecological examinations, avoiding the problem of limited field of vision caused by the contraction of the left and right vaginal walls.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a vaginal speculum for gynecological observation, comprising a dilator shell and a dilator inner plug that can be fitted inside the dilator shell, wherein the outer diameter of the dilator inner plug is not greater than the inner diameter of the dilator shell, and the length of the dilator inner plug is not less than the length of the dilator shell; one end of the dilator shell is provided with at least three petal-shaped guide plates arranged in a ring, and the other end of the dilator shell is detachably connected to the dilator inner plug after insertion; the dilator inner plug includes a dilator cylinder that can extend into the dilator shell, and the dilator cylinder includes a through hole that does not obstruct the field of view of the examination site.
[0006] Preferably, the expansion shell is inserted into the expansion inner plug and engages with it.
[0007] Preferably, the other end of the expanded shell is provided with an outer end portion, one end of the petal-shaped guide piece is integrally formed with the outer end portion, and the other end is provided with an arc portion, the petal-shaped guide piece gradually narrows from the outer end portion to the arc portion.
[0008] Preferably, the outer diameter of the outer end is larger than the outer diameter of the expansion shell and a plurality of first reinforcing ribs are provided between the outer end and the outer wall of the expansion shell; the expansion inner plug includes an observation end, which is engaged with the outer end.
[0009] Preferably, two pressure plates are symmetrically arranged on the outer periphery of the observation end, and the end of the pressure plate near the expansion cylinder is provided with a buckle that engages with the outer end.
[0010] Preferably, the expansion cylinder is provided with a first slot and a second slot, which are arranged opposite to each other, and the inner wall of the expansion shell is provided with a first protrusion and a second protrusion that respectively engage with the first slot and the second slot.
[0011] Preferably, there are at least two first slots and at least two second slots, and the at least two first slots and at least two second slots are arranged at intervals along the length of the expansion cylinder.
[0012] Preferably, several second reinforcing ribs are provided between the observation end and the outer wall of the expansion cylinder.
[0013] Preferably, the number of no fewer than three lobed guide flaps is four.
[0014] Compared with existing technologies, this utility model provides a vaginal dilator for gynecological observation, which has the following advantages: This product can be made of polycarbonate material, which has advantages such as high transparency, low cost, impact resistance, dimensional stability, good toughness, and corrosion resistance; this product uses a multi-flap method for dilation, making the vaginal wall more evenly stressed and reducing patient discomfort; the snap-fit connection between the dilator shell and the inner dilator plug is convenient and easy to use; the multiple settings of the first and second slots allow for adjustment of the length of the dilator tube inserted; when the vaginal wall contracts inward due to the body's natural reaction, the viewing aperture does not shrink due to the contraction of the vaginal wall, thus not obstructing the doctor's view. This utility model avoids the problems of uneven viewing field and discomfort caused by unidirectional over-dilation in traditional upper and lower blade dilators. Attached Figure Description
[0015] Figure 1 This is a schematic diagram of a structure in the prior art;
[0016] Figure 2 This is a schematic diagram of the structure of Embodiment 1 of the present utility model;
[0017] Figure 3 This is a schematic diagram of the expanded outer shell structure according to Embodiment 1 of this utility model;
[0018] Figure 4 This is a schematic diagram of the expanded inner plug structure according to Embodiment 1 of this utility model;
[0019] Figure 5 for Figure 2 A cross-sectional schematic diagram;
[0020] Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention;
[0021] Figure 7 for Figure 6 A cross-sectional schematic diagram;
[0022] Figure 8 for Figure 7 Enlarged diagram of point A in the diagram;
[0023] Figure 9 This is an exploded view of Embodiment 2 of the present invention;
[0024] Explanation of reference numerals in the attached drawings: 1. Expansion shell; 11. Lobe-shaped guide plate; 111. Arc portion; 12. Outer end; 13. First reinforcing rib; 14. First protrusion; 15. Second protrusion; 2. Expansion inner plug; 21. Expansion cylinder; 211. Viewing aperture; 22. Observation end; 23. Second reinforcing rib; 24. Pressure plate; 25. Buckle; 26. Connecting rib; 27. First slot; 28. Second slot; 100. Upper blade; 200. Lower blade; 300. Left vaginal wall; 400. Left vaginal wall; 500. Viewing area. Detailed Implementation
[0025] The technical solutions of the present utility model will now be described with reference to the accompanying drawings in the embodiments of the present utility model:
[0026] like Figure 1 The diagram shows a simplified illustration of an existing duckbill-type vaginal speculum. The speculum includes an upper blade 100 and a lower blade 200. The doctor inserts the upper blade 100 and lower blade 200 into the vagina by holding the handle, causing them to open to obtain a field of view for examination. After the upper blade 100 and lower blade 200 separate, a narrow field of view 500 is formed. At this time, due to the patient's natural physiological response, the left vaginal wall 300 and the left vaginal wall 400 tend to contract and converge, resulting in... Figure 1 As shown, the left vaginal wall at 300 and 400, after contraction, further obscures the already narrow field of vision at 500. During the operation of the duckbill-type vaginal speculum, the patient will experience discomfort due to the pulling sensation after the upper blade at 100 and the lower blade at 200 separate, which will intensify the physiological contraction. The obscuring of the field of vision at 500 after the contraction of the left vaginal wall at 300 and 400 makes it difficult for the doctor to complete the examination quickly and accurately, and will increase the user's resistance.
[0027] To address the aforementioned problems, this utility model provides a vaginal speculum for gynecological observation, comprising a dilator shell 1 and a dilator inner plug 2 that can be fitted inside the dilator shell 1. The outer diameter of the dilator inner plug 2 is not greater than the inner diameter of the dilator shell 1, preferably the outer diameter of the dilator inner plug 2 is smaller than the inner diameter of the dilator shell 1 so that the doctor can easily insert the dilator inner plug 2 into the dilator shell 1 during operation; the length of the dilator inner plug 2 is not less than the length of the dilator shell 1, preferably the length of the dilator inner plug 2 is greater than the length of the dilator shell 1 so that the flap-shaped guide plate 11 can be fully opened; one end of the dilator shell 1... The expansion shell 1 has at least three petal-shaped guide pieces 11 arranged in a ring. The other end of the expansion shell 1 has an outer end portion 12. One end of each of the at least three petal-shaped guide pieces 11 is integrally formed and connected to the outer end portion 12. The other end of each petal-shaped guide piece 11 has an arc-shaped portion 111. The arc-shaped portion 111 of the petal-shaped guide piece 11 has no sharp parts, ensuring that the patient's discomfort is reduced when the expansion shell 1 is inserted into the vagina. The petal-shaped guide pieces 11 gradually narrow from the outer end portion 12 to the arc-shaped portion 111. Preferably, there are four or six petal-shaped guide pieces 11. Alternatively, the thickness of the end of the petal-shaped guide piece 11 near the arc-shaped portion 111 can be greater than the thickness of the end near the outer end portion 12. This results in a thicker wall of the petal-shaped guide piece 11 at the end inserted into the vagina, making it less likely to pinch the vaginal wall. The thicker end and thinner end of the petal-shaped guide piece 11 do not affect the strength of the expansion shell 1, and the overall wedge shape of the petal-shaped guide piece 11 makes it less likely to fall off after being inserted into the vagina. The outer end 12 of the expansion shell 1 allows the inner expansion plug 2 to be inserted. After insertion, the inner expansion plug 2 can be detachably connected to the expansion shell 1. Specifically, the inner expansion plug 2 can be detachably connected to the outer end 12 of the expansion shell 1 after insertion. This detachment can be achieved through a snap-fit connection, which is more convenient for doctors during examination. The inner expansion plug 2 includes an expansion cylinder 21 that can extend into the expansion shell 1. The expansion cylinder 21 includes a viewing aperture 211 that does not obstruct the examination area. Preferably, the viewing aperture 211 is circular to ensure that the expansion cylinder 21 does not obstruct the doctor's field of vision due to physiological reactions after being inserted into the expansion shell 1. Because when a doctor examines a patient, even if the patient experiences a physiological contraction response, it will only affect the flap guide plate 11 and the dilator 21. Since the dilator 21 is located inside the flap guide plate 11, the vaginal contraction caused by the physiological contraction response ultimately acts on the outer wall of the dilator 21. The dilator 21 is made of a tough material such as PC or ABS. These materials have a certain degree of hardness and toughness, so even if the vaginal contraction ultimately acts on the outer wall of the dilator 21, the dilator 21 will not contract, and the viewing aperture 211 inside the dilator 21 will not shrink. That is, the viewing aperture 211 inside the dilator 21 is the smallest area that the doctor can see.
[0028] The expansion outer shell 1 engages with the expansion inner plug 2 after insertion. Various engagement methods are possible; the following examples, Embodiment 1 and Embodiment 2, will illustrate the engagement mechanism in detail. Other detachable methods still fall within the protection scope of this utility model. Embodiment 1 is as follows... Figures 2 to 5 The diagram shows an external snap-fit design. The outer diameter of the outer end 12 is larger than the outer diameter of the expansion shell 1. Multiple first reinforcing ribs 13 are provided between one end of the outer end 12 and the outer wall of the expansion shell 1. These first reinforcing ribs 13 support the outer end 12. The four petal-shaped guide plates 11, the outer end 12, and the multiple first reinforcing ribs 13 are integrally formed to constitute the expansion shell 1. The expansion inner plug 2 includes an integrally formed expansion cylinder 21 and an observation end 22. The through hole of the expansion cylinder 21 is a field-of-view through hole 211. Two pressure plates 24 are symmetrically arranged on the outer periphery of the observation end 22. A snap-fit 25 is provided at the end of the pressure plate 24 near the expansion cylinder 21 to engage with the outer end 12. A connecting rib 26 is integrally formed between the pressure plate 24 and the observation end 22, providing support for the pressure plate 24. The usage process of Embodiment 1 is as follows: The doctor first... One end of the flap-shaped guide plate 11 of the dilator shell 1 is inserted into the patient's vagina. At this time, the four flap-shaped guide plates 11 tend to move closer to each other. Then, one end of the dilator tube 21 of the dilator plug 2 is inserted into the dilator shell 1 through the inner hole of the outer end 12. As the dilator tube 21 gradually slides into the dilator shell 1, the four flap-shaped guide plates 11 gradually separate. After the dilator tube 21 is in place, the doctor presses the two opposing pressure plates 24 with one hand to make the two buckles 25 on them move slightly away so that they can be engaged with the outer end 12. The visual field aperture 211 is the doctor's visual field area and will not contract due to physiological reactions. After the doctor finishes the examination, he presses the two opposing pressure plates 24 with one hand again to make the two buckles 25 on them move slightly away so that they can be separated from the outer end 12. Then the dilator shell 1 can be removed.
[0029] Example 2 Figures 6 to 9 The internal snap-fit method is used. The difference between this embodiment and the first embodiment is that there is no pressure plate 24 and snap-fit 25. The expansion cylinder 21 is provided with a first snap-fit groove 27 and a second snap-fit groove 28. The first snap-fit groove 27 and the second snap-fit groove 28 are arranged opposite to each other. The inner wall of the expansion shell 1 near the outer end 12 is provided with a first protrusion 14 and a second protrusion 15 that respectively engage with the first snap-fit groove 27 and the second snap-fit groove 28.
[0030] To adjust the length that the expansion cylinder 21 can extend into, there are at least two first slots 27 and two second slots 28, preferably three of each, and the at least two first slots 27 and two second slots 28 are arranged at intervals along the length direction of the expansion cylinder 21. Figure 8As shown, three first slots 27 and three second slots 28 are spaced apart, and the first slots 27 and second slots 28 are positioned opposite each other and can engage with the first protrusion 14 and the second protrusion 15. Viewed from the outer end 12 towards the petal-shaped guide plate 11, the length to which the expansion cylinder 21 can extend gradually increases as the first protrusion 14 engages in the first, second, and third first slots 27. Simultaneously, the second protrusion 15 correspondingly engages in the first, second, and third second slots 28. At least two first slots 27 and second slots 28 are used to adjust the depth of the expansion cylinder 21, ensuring that the expansion cylinder 21 can reach the position to be inspected. Several second reinforcing ribs 23 are provided between the outer wall of the observation end 22 and the outer wall of the expansion cylinder 21; the second reinforcing ribs 23 are used to strengthen the observation end 22. The difference between Example 2 and Example 1 lies in the different snap-fit method and the adjustable length of the dilator 21. The doctor first inserts one end of the flap-shaped guide plate 11 of the dilator housing 1 into the patient's vagina. At this time, the four flap-shaped guide plates 11 tend to move closer together. Then, one end of the dilator 21 of the dilator plug 2 is inserted into the dilator housing 1 through the inner hole of the outer end 12. As the dilator 21 gradually slides into the dilator housing 1, the four flap-shaped guide plates 11 gradually separate. After the dilator 21 is in place, the doctor rotates the observation end 22 with one hand to make the first protrusion 14 and the second protrusion 15 snap into the corresponding first slot 27 and second slot 28, respectively. After snap-fitting, the field of view aperture 211 becomes the doctor's field of view area and will not shrink due to physiological reactions. After the examination, the doctor rotates the observation end 22 with one hand to make the first protrusion 14 and the second protrusion 15 separate from the corresponding first slot 27 and second slot 28, respectively. Then, the dilator housing 1 can be removed.
[0031] This utility model includes a detachable expansion shell 1 and an expansion inner plug 2. The expansion inner plug 2 can slide into and be fitted inside the expansion shell 1. The expansion shell 1 can adopt a multi-lobed embedded push-in type for expansion, avoiding the problems of uneven field of vision and discomfort caused by unidirectional over-expansion in traditional upper and lower blade type dilators. The snap-fit connection between the expansion shell 1 and the expansion inner plug 2 facilitates the doctor's operation and prevents the expansion inner plug 2 from slipping out due to vaginal wall pressure or the doctor's operation after it is pushed in. The flap-shaped guide plate 11 of the expansion shell 1 is placed into the vagina, and then the expansion inner plug 2 is pushed into the expansion shell 1. The locking buckle of the expansion inner plug 2 is locked onto the expansion shell 1, and then the surgery can be performed.
[0032] The above embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.
Claims
1. A vaginal speculum for gynecological observation, characterized in that: It includes an expansion shell (1) and an expansion inner plug (2) that can be fitted inside the expansion shell (1). The outer diameter of the expansion inner plug (2) is not greater than the inner diameter of the expansion shell (1), and the length of the expansion inner plug (2) is not less than the length of the expansion shell (1). At one end of the expansion shell (1), there are at least three petal-shaped guide pieces (11) arranged in a ring. The other end of the expansion shell (1) can be inserted into the expansion inner plug (2) and detachably connected to it. The expansion inner plug (2) includes an expansion cylinder (21) that can be inserted into the expansion shell (1). The expansion cylinder (21) includes a through hole (211) that does not obstruct the field of view of the inspection area.
2. The vaginal speculum for gynecological observation according to claim 1, characterized in that: The expansion shell (1) is inserted into the expansion inner plug (2) and engages with it.
3. The vaginal speculum for gynecological observation according to claim 2, characterized in that: The other end of the expanded shell (1) is provided with an outer end (12). One end of the petal-shaped guide plate (11) is integrally formed with the outer end (12), and the other end is provided with an arc portion (111). The petal-shaped guide plate (11) gradually narrows from the outer end (12) to the arc portion (111).
4. The vaginal speculum for gynecological observation according to claim 3, characterized in that: The outer end (12) has an outer diameter larger than the outer diameter of the expansion shell (1) and is provided with multiple first reinforcing ribs (13) between it and the outer wall of the expansion shell (1); the expansion inner plug (2) includes an observation end (22) which is engaged with the outer end (12).
5. The vaginal speculum for gynecological observation according to claim 4, characterized in that: Two pressure plates (24) are symmetrically arranged on the outer periphery of the observation end (22). The end of the pressure plate (24) near the expansion cylinder (21) is provided with a buckle (25) that engages with the outer end (12).
6. The vaginal speculum for gynecological observation according to claim 4, characterized in that: The expansion cylinder (21) is provided with a first slot (27) and a second slot (28), which are arranged opposite to each other. The inner wall of the expansion shell (1) is provided with a first protrusion (14) and a second protrusion (15) that respectively engage with the first slot (27) and the second slot (28).
7. The vaginal speculum for gynecological observation according to claim 6, characterized in that: There are at least two first slots (27) and two second slots (28), and the at least two first slots (27) and two second slots (28) are arranged at intervals along the length of the expansion cylinder (21).
8. The vaginal speculum for gynecological observation according to claim 1, characterized in that: Several second reinforcing ribs (23) are provided between the observation end (22) and the outer wall of the expansion tube (21).
9. The vaginal speculum for gynecological observation according to claim 1, characterized in that: The number of no less than three lobed guide flaps (11) is four.