Rotating lift dilator

Abstract

The present disclosure describes a rotary lifting dilator, comprising an upper leaf assembly and a lower leaf assembly, the upper leaf assembly comprising a pressing part, an upper leaf, and a first connecting part, the lower leaf assembly comprising a holding part, a lower leaf, and a second connecting part; the first connecting part comprising a guide groove and a first rotating shaft, the guide groove comprising a first protrusion extending towards the lower leaf; the second connecting part comprising a groove and a waist-shaped hole, an end of the groove extending towards the upper leaf forming a second protrusion protruding from the lower leaf; the first protrusion movably placed in the groove, the second protrusion placed in the guide groove and slidable along the length direction of the guide groove, the first rotating shaft slidably arranged in the waist-shaped hole; pressing the pressing part, the second protrusion sliding in the guide groove to make the first protrusion move in the groove relative to the second protrusion and make the first rotating shaft slide in the waist-shaped hole. Thus, a dilator capable of realizing rotating shaft dilatation and push-pull dilatation at the same time and convenient to use can be provided.

Description

Technical Field

[0001] This disclosure generally relates to the field of medical devices, and specifically to a rotary lifting expander. Background Technology

[0002] A vaginal speculum (also known as a speculum or vaginal speculum) is an instrument used in routine gynecological examinations or gynecological disease diagnosis to dilate the vagina for easier observation. It plays an important role in assisting in the examination and screening of gynecological diseases.

[0003] A expander typically consists of an upper and a lower vane. The expander expands by opening the upper and lower vanes; it closes by closing the upper and lower vanes. Common expander expansion methods include pivot expander and push-pull expander.

[0004] Rotary-axis dilation refers to the use of lever principle, where the upper blade rotates relative to the lower blade around a fulcrum (i.e., the pivot) to open the upper and lower blades, thereby expanding the dilator. For example, the upper-wing self-destructing surgical speculum disclosed in Patent Document 1 (CN 111990960 A) expands the speculum by rotatably connecting an upper dilator (i.e., the upper blade) and a lower dilator (i.e., the lower blade), with the upper dilator rotating relative to the lower dilator around a pivot (i.e., the pivot).

[0005] Furthermore, push-pull dilatation generally achieves dilation by first pressing and then pushing, where the direction of the force applied during pressing differs from the direction of the force applied during pushing. For example, the disposable self-destructing vaginal dilator disclosed in Patent Document 2 (CN 103393397 A) achieves dilation by first pressing the push-pull part to rotate the first dilator (i.e., the lower leaf) relative to the second dilator (i.e., the upper leaf), thereby opening the upper and lower leaves, and then pushing the push-pull part to further open the upper leaf relative to the lower leaf.

[0006] However, the speculum described in Patent Document 1 does not expand effectively near the pivot point after dilation, thus limiting the examination field of view and operating space. Although the vaginal speculum described in Patent Document 2 does expand effectively near the pivot point after dilation, the dilation process requires two steps: pressing and pushing, with different directions of force applied in each step, making it cumbersome to operate and inconvenient to use. Summary of the Invention

[0007] This disclosure is made in view of the above-mentioned situation, and its purpose is to provide a rotary lifting expander that can simultaneously achieve the expansion effects of swivel expansion and push-pull expansion and is easy to use.

[0008] To this end, this disclosure provides a rotary lifting expander, including an upper leaf assembly and a lower leaf assembly. The upper leaf assembly includes a pressing portion, an upper leaf, and a first connecting portion for connecting the pressing portion and the upper leaf. The lower leaf assembly includes a gripping portion, a lower leaf, and a second connecting portion for connecting the gripping portion and the lower leaf. The first connecting portion cooperates with the second connecting portion to allow the upper leaf assembly to rotate about a rotation center relative to the lower leaf assembly. The first connecting portion includes a guide groove and a first rotating shaft. The guide groove includes a first protrusion extending toward the lower leaf to form a protrusion over the upper leaf. The second connecting portion includes a groove and a waist-shaped hole. One end of the groove extending toward the upper leaf forms a second protrusion over the lower leaf. The first protrusion is movably inserted into the groove, and the second protrusion is inserted into the guide groove and can slide along the length direction of the guide groove. The first rotating shaft is slidably disposed in the waist-shaped hole. When the pressing portion is pressed, the second protrusion slides in the guide groove, causing the first protrusion to move relative to the second protrusion in the groove and causing the first rotating shaft to slide in the waist-shaped hole.

[0009] In this disclosure, a first pivot of the first connecting part is slidably disposed in the waist-shaped hole of the second connecting part, allowing the upper leaf assembly to be connected to the lower leaf assembly in a manner that allows rotation about a rotation center. When the pressing part is pressed, the pressing part rotates about the rotation center relative to the gripping part, causing the upper leaf to rotate about the rotation center in a direction away from the lower leaf, thereby opening the upper and lower leaves. This allows the expander to achieve a pivot-type expansion effect. Furthermore, during pivot-type expansion, the second protrusion sliding within the guide groove restricts the movement path and direction of the first protrusion relative to the second protrusion within the groove, causing the first pivot to slide within the waist-shaped hole following the rotation of the pressing part. This causes the upper leaf to slide relative to the lower leaf in a direction away from the lower leaf, further opening the upper and lower leaves, thereby enabling the expander to achieve a push-pull expansion effect. Thus, the expander achieves an expansion effect at the position of the first pivot. Moreover, pressing the pressing part allows the expander to simultaneously achieve both pivot-type and push-pull expansion effects. This improves the ease of use of the expander.

[0010] Additionally, in the rotary lifting expander disclosed herein, optionally, the guide groove includes a limiting portion disposed on the first protrusion, the limiting portion blocking one end of the guide groove near the lower leaf. In this case, when the second protrusion slides within the guide groove, the limiting portion can block and restrict the sliding path of the second protrusion, thereby preventing the second protrusion from sliding out of the guide groove.

[0011] Additionally, in the rotary lifting expander disclosed herein, optionally, the limiting portion is a second rotating shaft, which slides relative to the second protrusion while maintaining line contact with it when the first protrusion moves relative to the second protrusion. In this case, the sliding of the second rotating shaft relative to the second protrusion can be made smoother and more continuous, thereby improving the smoothness and continuity of the expander's expansion and closing processes.

[0012] Additionally, in the rotary lifting expander disclosed herein, the second rotating shaft may optionally slide relative to the second protrusion in a rotational manner. In this case, the sliding of the second rotating shaft relative to the second protrusion can be made smoother, thereby improving the smoothness of the expander's expansion and closing processes.

[0013] Alternatively, in the rotary lifting expander disclosed herein, the waist-shaped hole may be an elongated, round-headed hole that bends toward the rotation center. In this case, the elongated, round-headed hole that bends toward the rotation center allows the sliding of the first rotating shaft in the waist-shaped hole of the groove to better adapt to the rotation of the pressing part around the rotation center.

[0014] Alternatively, in the rotary lifting expander disclosed herein, the guide groove may be an arc-shaped groove curved toward the first rotating shaft. In this case, when the second protrusion slides within the arc-shaped groove, the arc-shaped groove provides sliding space for the second protrusion, thereby improving the smoothness of the second protrusion sliding within the guide groove.

[0015] Additionally, in the rotary lifting expander disclosed herein, optionally, the second protrusion is perpendicular to the side of the lower leaf. In this case, when the limiting portion slides relative to the second protrusion to achieve push-pull expansion, the expander can achieve a vertically upward expansion effect at the position of the first pivot, thereby obtaining a better inspection field of view and operating space.

[0016] Additionally, in the rotary lifting expander disclosed herein, optionally, a locking rod with a slot is provided on the gripping portion, the slot cooperating with the pressing portion to lock the relative rotation between the upper leaf assembly and the lower leaf assembly. In this case, when the upper leaf assembly rotates about the rotation center relative to the lower leaf assembly to open the upper and lower leaves, the upper and lower leaves can be kept in the open state, thereby keeping the expander in the expanded state.

[0017] Additionally, in the rotary lifting expander disclosed herein, optionally, the locking lever is disposed on the gripping portion in a manner that allows rotation about an axis. In this case, rotating the locking lever about a third axis relative to the gripping portion allows for convenient insertion of the pressing portion into the slot to lock the pressing portion, thereby keeping the expander in an expanded state. Alternatively, rotating the locking lever about a third axis relative to the gripping portion also allows for convenient removal of the pressing portion from the slot to release the locking of the pressing portion, thereby allowing the pressing portion to rotate about the rotation center to adjust the degree of expansion of the expander or to switch the expander to a closed state.

[0018] Furthermore, in the rotary lifting dilator disclosed herein, optionally, there are multiple slots distributed along the length of the lever, and the pressing part engages with the lever by being inserted into the slot. In this case, when the upper leaf rotates around the rotation center toward the lower leaf due to the pressure of the vaginal tissue, causing the pressing part to rotate away from the lever around the rotation center, inserting the pressing part into the slot improves the firmness of the engagement between the pressing part and the lever, thereby improving the stability of the dilator in maintaining an expanded state. Additionally, by inserting the pressing part into the multiple slots distributed on the lever, different degrees of opening can be formed between the upper and lower leaves, facilitating adjustment of the opening degree between the upper and lower leaves. This allows the dilator to achieve multi-level expansion states to adapt to different expansion needs.

[0019] Alternatively, in the rotary lifting expander disclosed herein, the pressing part may include a through hole through which the locking rod passes to insert the pressing part into the locking slot. In this case, the pressing part can be inserted into the locking slot within the diameter range defined by the through hole, thereby improving the accuracy and convenience of inserting the pressing part into the locking slot.

[0020] Additionally, in the rotary lifting expander disclosed herein, optionally, the upper and lower blades extend in a target direction. Viewed along the target direction, the gripping portion has a first side and a second side opposite to each other, with the first connecting portion, the second connecting portion, and the pressing portion located on the first side of the gripping portion. In this case, the upper and lower blades can be opened or closed by operating (e.g., pressing) the pressing portion from the side of the gripping portion. Furthermore, when a button protection position is provided on the side of the gripping portion opposite to the target direction, by positioning the pressing portion on the side of the gripping portion, it is possible to better prevent the pressing portion from touching the button protection position and affecting the operation of the button protection position.

[0021] Additionally, in the rotary lifting dilator disclosed herein, optionally, on the second side of the gripping portion, the side of the upper leaf and the side of the lower leaf are separable. In this case, when the upper and lower leaves open to form an examination channel, the separation of the side of the upper leaf from the side of the lower leaf allows an opening to be formed between the side of the upper leaf and the side of the lower leaf. This increases the operating space and the angle of use of the instrument when other medical devices (e.g., sampling swabs) are inserted into the vagina through the examination channel for sampling.

[0022] Additionally, in the rotary lifting dilator disclosed herein, optionally, the upper and lower leaves open to form an examination channel, and the upper leaf assembly includes a smoke exhaust pipe communicating with the examination channel, the smoke exhaust pipe being disposed at one end of the upper leaf near the first connecting portion. In this case, smoke generated in the examination channel during surgery can be quickly discharged to the outside through the smoke exhaust pipe. Furthermore, by disposing of the smoke exhaust pipe at the end of the upper leaf near the first connecting portion, when the dilator dilates the vagina, the smoke exhaust pipe can be deviated from the target object (e.g., the patient), thereby effectively reducing the possibility of the smoke exhaust pipe touching the patient.

[0023] Additionally, in the rotary lifting expander disclosed herein, optionally, the exhaust pipe includes an outlet section and an inlet section that communicate with each other. The outlet section is located at the end of the upper blade near the first connecting portion, and the inlet section is disposed on the upper blade in a manner that conforms to the inner side of the upper blade. In this case, smoke and dust in the inspection channel can be drawn in through the inlet section, and smoke and dust can be discharged through the outlet section. Furthermore, by conforming the inlet section to the inner side of the upper blade, the impact of the exhaust pipe on the inspection field of view and operating space can be reduced.

[0024] Additionally, in the rotary lifting expander disclosed herein, optionally, the exhaust pipe includes a plurality of undercut teeth distributed along the length of the outlet section. In this case, when the outlet section of the exhaust pipe is connected to an external duct (e.g., a flexible hose), the connection between the outlet section and the flexible hose can be strengthened by fitting the flexible hose onto the undercut teeth.

[0025] Additionally, in the rotary lifting expander disclosed herein, optionally, the inlet section extends along the length direction of the upper leaf, and the inlet section has a plurality of through holes distributed along the extension direction of the inlet section. In this case, the plurality of through holes in the inlet section can be arranged along the extension direction of the inspection channel, thereby improving the efficiency of absorbing and discharging smoke and dust within the inspection channel.

[0026] Additionally, in the rotary lifting dilator disclosed herein, optionally, the outlet segment is bent relative to the inlet segment at a preset angle, the preset angle being greater than 90 degrees and less than 120 degrees. In this case, when the dilator dilates the vagina, the possibility of the outlet segment touching the patient can be better reduced, and the outlet segment can be extended in a direction away from the examination channel, thereby better reducing the impact of the outlet segment on the examination field of view and operating space.

[0027] Additionally, in the rotary lifting expander disclosed herein, the gripping portion may optionally be cylindrical, and the gripping portion has a hollow cavity extending along the length direction of the gripping portion. In this case, the cylindrical gripping portion easily adapts to the size of a human hand, thereby facilitating the examiner's one-handed gripping of the expander. Furthermore, the hollow cavity allows the gripping portion to form a hollow structure, thereby effectively reducing the weight of the gripping portion and improving the ease of one-handed gripping of the expander.

[0028] Additionally, in the rotary lifting dilator disclosed herein, optionally, the gripping portion includes a closed first end and a second end with an opening, the lower leaf being connected to the first end, and the opening communicating with the hollow chamber. In this case, the opening at the second end facilitates the insertion of examination devices such as an endoscope into the hollow chamber, while the closed first end reduces contamination of the endoscope when the vagina is opened using the dilator. Thus, the dilator and endoscope can form a better fit for vaginal examination.

[0029] Additionally, in the rotary lift expander disclosed herein, optionally, the first end has a light-transmitting surface facing the target direction, wherein the target direction is the direction in which the upper and lower lobes extend. In this case, when the examination scope is inserted into the hollow cavity, the light-transmitting surface facing the target direction facilitates the examination scope's imaging of the natural cavity.

[0030] Additionally, in the rotary lifting expander disclosed herein, optionally, the gripping part includes a resilient button protection position, which deforms towards the hollow cavity when subjected to force. In this case, when the endoscope is inserted into the hollow cavity, the endoscope can be operated more conveniently through the resilient area (e.g., pressing the endoscope's button). Furthermore, it can significantly reduce direct contact between the operator and the endoscope, thereby reducing the possibility of contamination.

[0031] Additionally, in the rotary lifting expander disclosed herein, optionally, the button protection position is located on the side of the grip portion facing away from the target direction. In this case, the convenience for the inspector to operate the endoscope inserted into the hollow chamber via the button protection position can be improved.

[0032] According to this disclosure, a rotary lifting expander that can simultaneously achieve the expansion effects of pivot expansion and push-pull expansion and is easy to use can be provided. Attached Figure Description

[0033] This disclosure will now be explained in further detail with reference to the examples in the accompanying drawings, in which:

[0034] Figure 1 This is a schematic diagram showing the overall appearance of the expander involved in the example of this disclosure.

[0035] Figure 2A This is a schematic diagram showing the overall appearance of the expander involved in the example of this disclosure from another perspective.

[0036] Figure 2B This is an exploded view of the expander involved in the example of this disclosure.

[0037] Figure 3 It shows along Figure 2A A schematic cross-sectional view of AA' is shown.

[0038] Figure 4 It shows Figure 3 An enlarged schematic diagram of region C is shown.

[0039] Figure 5 This is a schematic diagram showing the forces acting on the expander during its expansion process.

[0040] Figure 6 This is a schematic diagram showing the expander involved in the example of this disclosure in a closed state.

[0041] Figure 7 This is a schematic diagram illustrating the lower leaf component involved in the example of this disclosure.

[0042] Figure 8 This is a schematic diagram illustrating the upper leaf component involved in the example of this disclosure.

[0043] Explanation of reference numerals in the attached figures:

[0044] D…Target direction, D1…Lifting direction, 100…Expander, 1…Rotation center, 10…Upper leaf assembly, 12…Upper leaf, 14…First connecting part, 16…Pressing part, 20…Lower leaf assembly, 22…Lower leaf, 24…Second connecting part, 26…Grip part, 140…Guide groove, 142…First protrusion, 144…Limiting part, 146…First rotating shaft, 240…Groove, 242…Second protrusion Starting point, 244…waist-shaped hole, 2441…front end, 2442…rear end, 30…clamp rod, 32…clamp groove, 260…third protrusion, 262…third pivot, 160…through hole, 18…exhaust pipe, 182…outlet section, 184…inlet section, 1840…through hole, 1820…back buckle, 264…hollow cavity, 266…button protection position, 40…inspection channel, 42…side opening. Detailed Implementation

[0045] The technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this disclosure.

[0046] It should be noted that the terms "first," "second," "third," and "fourth," etc., in this disclosure, claims, and the aforementioned drawings are used to distinguish different objects, not to describe a specific order. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices. In the following description, the same reference numerals are used for the same parts, and repeated descriptions are omitted. Additionally, the drawings are merely schematic diagrams, and the scale of the dimensions of the parts or the shape of the parts may differ from the actual figures.

[0047] This disclosure relates to a rotary lifting dilator for dilating natural cavities (e.g., the vagina). In some examples, after the vagina is dilated using the rotary lifting dilator of this disclosure, routine medical procedures such as examinations or surgeries can be performed on the vagina; that is, the rotary lifting dilator of this disclosure can be used for both examinations and surgeries.

[0048] The rotary lifting expander disclosed herein is convenient and easy to use. It can achieve both swivel expansion and push-pull expansion effects by simply pressing, thus making the rotary lifting expander have an expansion effect near the swivel after expansion.

[0049] For ease of description, the rotary lifting expander disclosed herein may also be referred to simply as an expander.

[0050] The expander involved in this disclosure will now be described in conjunction with the accompanying drawings.

[0051] Figure 1 This is a schematic diagram showing the overall appearance of the expander 100 involved in the example of this disclosure. Figure 2A This is a schematic diagram showing the overall appearance of the expander 100 as described in this disclosure example from another perspective. Figure 2B This is an exploded view of the expander 100 as described in this disclosure example.

[0052] See Figure 1 or Figure 2A The expander 100 disclosed herein includes an upper leaf assembly 10 and a lower leaf assembly 20, wherein the upper leaf assembly 10 is rotatable relative to the lower leaf assembly 20 about a rotation center 1. In some examples, the rotation center 1 may be a virtual rotation fulcrum, that is, the rotation center 1 may be designed not to be an actual rotation fulcrum.

[0053] In some examples, the expansion state and closed state of the expander 100 can be switched by rotating the upper leaf component 10 about the rotation center 1 relative to the lower leaf component 20.

[0054] Figure 3 It shows along Figure 2A A schematic cross-sectional view of AA' is shown. Figure 4 It shows Figure 3 An enlarged schematic diagram of region C is shown. Figure 5 This is a schematic diagram showing the forces acting on the expander 100 during its expansion process. Figure 6 This is a schematic diagram showing the expander 100 involved in the example of this disclosure in a closed state.

[0055] See in some examples Figure 3 The upper leaf assembly 10 may include a pressing part 16, an upper leaf 12, and a first connecting part 14. The first connecting part 14 is used to connect the pressing part 16 and the upper leaf 12, that is, the first connecting part 14 may be located between the pressing part 16 and the upper leaf 12.

[0056] In some examples, the upper leaf component 10 can be movably connected to the lower leaf component 20 via the first connecting part 14.

[0057] In some examples, the first connecting part 14 can serve as a support point between the pressing part 16 and the upper leaf 12, and operation (e.g., pressing) of the pressing part 16 can cause the upper leaf 12 to rotate about the rotation center 1 relative to the lower leaf assembly 20.

[0058] In some examples, pressing the pressing part 16 allows the first connecting part 14 to slide relative to the lower leaf assembly 20, thereby causing the upper leaf 12 to slide relative to the lower leaf assembly 20.

[0059] See in some examples Figure 3 The lower leaf assembly 20 may include a gripping portion 26, a lower leaf 22, and a second connecting portion 24. The second connecting portion 24 can be used to connect the gripping portion 26 and the lower leaf 22, that is, the second connecting portion 24 can be located between the gripping portion 26 and the lower leaf 22.

[0060] In some examples, the grip 26 can serve as a base for the expander 100 to support the lower leaf 22 and the upper leaf assembly 10, and the operator can operate the expander 100 by holding the grip 26 with one hand.

[0061] In some examples, the grip 26 may be cylindrical. In this case, the cylindrical grip 26 easily adapts to the size of a human hand, thus facilitating the inspector's single-handed gripping of the expander 100. In other examples, the grip 26 may be cylindrical. In still other examples, the grip 26 may be prismatic, such as a square prism or a hexagonal prism.

[0062] See in some examples Figure 2A or Figure 2B The upper lobe 12 and the lower lobe 22 can extend in the target direction D. In other words, the target direction D can be the direction in which the upper lobe 12 and the lower lobe 22 extend, meaning that the directions in which the upper lobe 12 and the lower lobe 22 extend can be the same. In some examples, the target direction D can represent the direction for observing or examining the dilated vagina.

[0063] In some examples, the upper leaf 12 and the lower leaf 22 may extend to the target direction D by the same length, and their widths may also be equal. In some examples, the structures of the upper leaf 12 and the lower leaf 22 may be the same or similar. For example, the upper leaf 12 and the lower leaf 22 may have a roughly duckbill-like structure.

[0064] In some examples, the lower leaf assembly 20 can be movably connected to the upper leaf assembly 10 via a second connecting portion 24. Specifically, the second connecting portion 24 can cooperate with the first connecting portion 14 to allow the upper leaf assembly 10 to rotate relative to the lower leaf assembly 20 about the rotation center 1.

[0065] In some examples, the first connecting portion 14 can cooperate with the second connecting portion 24 to allow the upper leaf 12 to rotate about the rotation center 1 relative to the lower leaf 22 and to allow the upper leaf 12 to slide relative to the lower leaf 22.

[0066] In some examples, rotating the upper leaf 12 about the rotation center 1 relative to the lower leaf 22 can open the upper leaf 12 and the lower leaf 22, and sliding the upper leaf 12 relative to the lower leaf 22 can further open the upper leaf 12 and the lower leaf 22.

[0067] See in some examples Figure 2A The upper leaf 12 and the lower leaf 22 can open to form an inspection channel 40. In some examples, the target direction D can represent the direction in which the inspection channel 40 formed by the upper leaf 12 and the lower leaf 22 extends.

[0068] In some examples, examiners can examine the vagina or cervix through examination channel 40. In other examples, doctors can perform medical procedures such as surgery or treatment on the vagina or cervix through examination channel 40.

[0069] In some examples, rotating the upper leaf 12 about the rotation center 1 relative to the lower leaf 22 can bring the upper leaf 12 and the lower leaf 22 together.

[0070] In some examples, the opening of the upper leaf 12 and the lower leaf 22 can indicate that the expander 100 is in an expanded state (see [reference]). Figure 3 The closing of the upper leaf 12 and the lower leaf 22 indicates that the expander 100 is in a closed state (see...). Figure 6 ).

[0071] See in some examples Figure 2B or Figure 3 The first connecting part 14 may include a first rotating shaft 146, which can be used to connect the second connecting part 24.

[0072] See in some examples Figure 3 The second connecting portion 24 may include an oblong hole 244, and the first rotating shaft 146 may be slidably disposed in the oblong hole 244. Thus, the first connecting portion 14 and the second connecting portion 24 can be slidably connected.

[0073] In some examples, pressing the pressing part 16 allows the first rotating shaft 146 to slide within the oblong hole 244, and the first connecting part 14 to slide relative to the second connecting part 24 along the length of the oblong hole 244. This allows the upper leaf 12 to slide relative to the lower leaf 22, thereby opening the upper leaf 12 and the lower leaf 22. Thus, the expander 100 is equipped with a push-pull expansion function.

[0074] In some examples, the upper leaf assembly 10 can be connected to the lower leaf assembly 20 in a manner that allows rotation about the rotation center 1 via the waist-shaped hole 244 slidably disposed on the first pivot 146 in the second connecting portion 24. That is, the upper leaf assembly 10 can be rotated relative to the lower leaf assembly 20 about the rotation center 1 via the first pivot 146 slidably disposed on the waist-shaped hole 244.

[0075] In some examples, pressing the pressing part 16 causes it to rotate about the rotation center 1 relative to the gripping part 26, thereby causing the upper leaf 12 to rotate about the rotation center 1 relative to the lower leaf 22, which in turn causes the upper leaf 12 and the lower leaf 22 to open. Specifically, pressing the pressing part 16 causes it to rotate about the rotation center 1 relative to the gripping part 26, causing the upper leaf 12 to rotate about the rotation center 1 in a direction away from the lower leaf 22, thereby causing the upper leaf 12 and the lower leaf 22 to open. This enables the expander 100 to achieve a pivot-type expansion function.

[0076] In some examples, pressing the pressing part 16 allows the upper leaf 12 to rotate relative to the lower leaf 22 about the rotation center 1, and the first connecting part 14 to slide relative to the second connecting part 24. This enables the expander 100 to simultaneously perform push-pull expansion and pivot expansion.

[0077] In some examples, the oblong hole 244 can be a round-headed elongated hole. See [link to details]. Figure 4 The waist-shaped hole 244 can be a round-headed elongated hole that bends toward the rotation center 1. In this case, the round-headed elongated hole that bends toward the rotation center 1 allows the sliding of the first rotating shaft 146 in the waist-shaped hole 244 to better adapt to the rotation of the pressing part 16 around the rotation center 1.

[0078] See in some examples Figure 3 or Figure 4 The first connecting portion 14 may include a guide groove 140, and the second connecting portion 24 may include a groove 240. The guide groove 140 may engage with the groove 240 to allow the upper blade 12 to slide relative to the lower blade 22.

[0079] In some examples, the guide groove 140 may include a first protrusion 142. Specifically, the guide groove 140 may extend toward the lower leaf 22, and one end extending toward the lower leaf 22 may form a first protrusion 142 protruding from the upper leaf 12 (see [link]). Figure 2B In some examples, the first protrusion 142 may be a protrusion formed on the side of the upper leaf 12.

[0080] In some examples, one end of the groove 240 may extend toward the upper leaf 12; specifically, the end extending toward the upper leaf 12 may form a second protrusion 242 protruding from the lower leaf (see...). Figure 3In some examples, the second protrusion 242 may be a protrusion formed on the side of the lower leaf 22.

[0081] In some examples, the guide groove 140 and the recess 240 can be nested within each other. See specifically... Figure 6 The first protrusion 142 can be placed into the groove 240 and the second protrusion 242 can be placed into the guide groove 140.

[0082] In some examples, the first protrusion 142 can be movably inserted into the recess 240. Additionally, the second protrusion 242 can be inserted into the guide groove 140 and can slide along the length of the guide groove 140.

[0083] See in some examples Figure 2B or Figure 3 The guide groove 140 may include a limiting portion 144, which may be disposed on the first protrusion 142. In some examples, the limiting portion 144 blocks the end of the guide groove 140 near the lower leaf 22. In this case, when the second protrusion 242 slides within the guide groove 140, the limiting portion 144 can block and restrict the sliding path of the second protrusion 242, thereby keeping the second protrusion 242 within the guide groove 140 and preventing it from sliding out of the guide groove 140.

[0084] In some examples, the movement (e.g., sliding) of the first protrusion 142 relative to the groove 240 can be linked to the sliding of the second protrusion 242 relative to the guide groove 140.

[0085] In some examples, pressing the pressing part 16 allows the first rotating shaft 146 to slide within the oblong hole 244, and the second protrusion 242 to slide within the guide groove 140. Specifically, pressing the pressing part 16 causes the first rotating shaft 146 to slide within the oblong hole 244, thereby causing the second protrusion 242 to slide within the guide groove 140, and also causes the first protrusion 142 to move relative to the second protrusion 242 within the groove 240.

[0086] The following describes the process of the first protrusion 142 moving relative to the groove 240 and the second protrusion 242 sliding within the guide groove 140, taking the opening process of the upper leaf 12 and the lower leaf 22 as an example.

[0087] For example, see Figure 5 Pressing the pressing part 16 can apply a force F to the pressing part 16, and the pressing part 16 can rotate around the rotation center 1 toward the direction closer to the gripping part 26, thereby driving the upper leaf 12 to rotate around the rotation center 1 toward the direction away from the lower leaf 22.

[0088] Accordingly, the first protrusion 142 can move away from the groove 240 along the upper leaf 12, thereby causing the limiting part 144 to move along the second protrusion 242 in the lifting direction D1 from the bottom of the groove 240 to near the top of the second protrusion 242 (see Figure 5 That is, the limiting part 144 is restricted by the second protrusion 242 to move in the lifting direction D1 until it approaches the top of the second protrusion 242.

[0089] Accordingly, the second protrusion 242 can slide relative to the guide groove 140. Specifically, the second protrusion 242 can slide within the guide groove 140 along the length of the guide groove 140 until the top of the second protrusion 242 approaches the limiting portion 144.

[0090] In addition, by blocking one end of the guide groove 140 by the limiting part 144, the second protrusion 242 cannot slide out of the guide groove 140 when it slides in the guide groove 140 due to the blocking and restriction of the limiting part 144, so that the limiting effect of the second protrusion 242 on the movement direction of the limiting part 144 always exists.

[0091] Furthermore, since the limiting part 144 is restricted by the second protrusion 242 to move in the lifting direction D1, the first rotating shaft 146 can slide within the waist-shaped hole 244 following the rotation of the pressing part 16. That is, the first rotating shaft 146 can slide from the rear end 2442 to the front end 2441 of the waist-shaped hole 244 (see...). Figure 5 This causes the upper leaf 12 to slide relative to the lower leaf 22 in a direction away from the lower leaf 22. The rear end 2442 of the waist-shaped hole 244 is the end away from the inspection channel 40, and the front end 2441 of the waist-shaped hole 244 is the end close to the inspection channel 40.

[0092] During the opening of the upper leaf 12 and lower leaf 22, pressing the pressing part 16 causes the upper leaf 12 to rotate around the rotation center 1 in a direction away from the lower leaf 22, thus opening the upper leaf 12 and lower leaf 22, enabling the expander 100 to achieve a pivot-type expansion effect. Furthermore, the first pivot 146 can slide from the rear end 2442 to the front end 2441 of the waist-shaped hole 244, causing the upper leaf 12 to slide relative to the lower leaf 22 in a direction away from the lower leaf 22, further opening the upper leaf 12 and lower leaf 22, thereby enabling the expander 100 to achieve a push-pull expansion effect. Thus, the expander 100 can achieve an expansion effect at the position of the first pivot 146. Moreover, simply pressing the pressing part 16 allows the expander 100 to simultaneously achieve both pivot-type and push-pull expansion effects. This improves the ease of use of the expander 100.

[0093] In some examples, sliding the first pivot 146 from the rear end 2442 to the front end 2441 of the oblong hole 244 can indicate that the position of the first pivot 146 relative to the second connecting portion 24 is raised. This allows the expander 100 to achieve an expansion effect at the position of the first pivot 146.

[0094] In summary, the groove 240 provides movement space for the first protrusion 142. When the limiting part 144 moves relative to the second protrusion 242 along the second protrusion 242, the second protrusion 242 can restrict the sliding path and sliding direction of the limiting part 144, thereby allowing the limiting part 144 to slide along a preset path and preset direction, that is, allowing the limiting part 144 to slide along the side of the second protrusion 242 located in the groove 240 in the lifting direction D1. Thus, the expander 100 can achieve an expansion effect at the position of the first rotating shaft 146.

[0095] In some examples, the guide groove 140 can be an arc-shaped groove. Specifically, the guide groove 140 can be an arc-shaped groove that curves toward the first rotating shaft 146. In this case, when the second protrusion 242 slides in the arc-shaped groove, the arc-shaped groove can reserve sliding space for the second protrusion 242, thereby improving the smoothness of the sliding of the second protrusion 242 in the guide groove 140.

[0096] In some examples, the top of the second protrusion 242 may have a preset curvature, that is, the second protrusion 242 may have a curved top. This can further improve the smoothness of the sliding of the second protrusion 242 relative to the curved edge. In some examples, when the second protrusion 242 slides within the guide groove 140, the top of the second protrusion 242 may abut against the bottom of the guide groove 140.

[0097] In some examples, the limiting portion 144 is a second pivot. In some examples, when the first protrusion 142 moves relative to the second protrusion 242, the second pivot can slide relative to the second protrusion 242 in a manner that maintains line contact with the second protrusion 242. In this case, the sliding of the second pivot relative to the second protrusion 242 can be made smoother and more continuous, thereby improving the smoothness and continuity of the expansion and closing processes of the expander 100.

[0098] In some examples, the second shaft can rotate. In some examples, the second shaft can slide relative to the second protrusion 242 in a rotating manner. That is, the second shaft can slide along the second protrusion 242 relative to the second protrusion 242 in a rotating manner. In this case, the sliding of the second shaft relative to the second protrusion 242 can be made smoother, thereby improving the smoothness of the expansion and closing processes of the expander 100.

[0099] See in some examples Figure 3The second protrusion 242 can be perpendicular to the side of the lower leaf 22. In this case, when the limiting part 144 slides relative to the second protrusion 242 to achieve push-pull expansion, the expander 100 can achieve a vertically upward expansion effect at the position of the first pivot 146, thereby obtaining a better inspection field of view and operating space.

[0100] In some examples, viewed along the target direction D, the grip portion 26 may have a first side and a second side facing each other. The first connecting portion 14, the second connecting portion 24, and the pressing portion 16 may be located on the first side of the grip portion 26. In this case, the opening or closing of the upper leaf 12 and the lower leaf 22 can be achieved by operating (e.g., pressing) the pressing portion 16 from the side of the grip portion 26; additionally, see... Figure 2A When the grip 26 has a button protection position 266 on the side opposite to the target direction D, by placing the pressing part 16 on the side of the grip 26, it is possible to better prevent the pressing part 16 from touching the button protection position 266 and affecting the operation of the button protection position 266.

[0101] In some examples, on the second side of the grip 26, the side of the upper leaf 12 can be separable from the side of the lower leaf 22 (see [reference]). Figure 2A In this case, when the upper leaf 12 and the lower leaf 22 open to form the inspection channel 40, a side opening 42 can be formed between the sides of the upper leaf 12 and the lower leaf 22 by separating the sides of the upper leaf 12 and the lower leaf 22 (see...). Figure 2A When other medical devices (such as sampling swabs) are used to enter the vagina through the examination channel 40 to take samples, the operating space and the angle of use of the instruments can be increased.

[0102] Figure 7 This is a schematic diagram illustrating the lower leaf component 20 as described in this disclosure example.

[0103] See in some examples Figure 7 The grip portion 26 may include a third protrusion 260, which may be a protrusion formed on one side (e.g., the first side) of the grip portion 26.

[0104] See in some examples Figure 6 The third protrusion 260 and the pressing part 16 can be located on the same side of the gripping part 26. When the pressing part 16 rotates around the rotation center 1 toward the gripping part 26, the pressing part 16 can abut against the third protrusion 260. At this time, the maximum expansion degree of the expander 100 can be obtained. In this case, by limiting the rotation stroke of the pressing part 16 by the third protrusion 260, the maximum opening degree of the upper leaf 12 and the lower leaf 22, that is, the maximum expansion degree of the expander 100, can be better determined.

[0105] In some examples, the length of the waist-shaped hole 244 can satisfy the following: when the pressing part 16 abuts against the third protrusion 260, the first rotating shaft 146 can slide to or near the front end 2441 of the waist-shaped hole 2444, and when the upper leaf 12 and the lower leaf 22 are closed, the first rotating shaft 146 can slide to or near the rear end 2442 of the waist-shaped hole 2444. Thus, the length of the waist-shaped hole 244 can be well adapted to the maximum expansion degree of the expander 100 and the closed state of the expander 100.

[0106] In some examples, the length of the second protrusion 242 can satisfy the following: when the pressing part 16 abuts against the third protrusion 260, the limiting part 144 can slide to near but not exceed the top of the second protrusion 242, and when the upper leaf 12 and the lower leaf 22 are closed, the second protrusion 242 is located at or near the bottom of the guide groove 140. In this case, during the opening process of the upper leaf 12 and the lower leaf 22, the second protrusion 242 can maintain the restriction on the sliding path and sliding direction of the limiting part 144, thereby enabling the expander 100 to maintain the expansion effect at the position of the first pivot 146. In addition, when the upper leaf 12 and the lower leaf 22 are closed, the upper leaf 12 and the lower leaf 22 can form a relatively tight closure.

[0107] Furthermore, the length of the first protrusion 142 is such that when the upper leaf 12 and the lower leaf 22 are closed, the first protrusion 142 can be located at or near the bottom of the groove 240. This allows the upper leaf 12 and the lower leaf 22 to form a relatively tight closure.

[0108] See in some examples Figure 6 The expander 100 may include a latch 30, which can lock the relative rotation between the upper leaf assembly 10 and the lower leaf assembly 20.

[0109] In some examples, the lever 30 may be located on the grip portion 26. See specifically... Figure 7 The lever 30 can be provided on the third protrusion 260 of the grip 26. In this case, the lever 30 and the pressing part 16 can be located on the same side of the grip 26, thereby facilitating the locking of the rotation of the pressing part 16 by means of the lever 30.

[0110] See in some examples Figure 6 The lever 30 may have a slot 32, which engages with the pressing part 16 to lock the relative rotation between the upper leaf assembly 10 and the lower leaf assembly 20. In this case, when the upper leaf assembly 10 rotates about the rotation center 1 relative to the lower leaf assembly 20, causing the upper leaf 12 and the lower leaf 22 to open, the upper leaf 12 and the lower leaf 22 can be kept in the open state, thereby keeping the expander 100 in the expanded state.

[0111] In some examples, the pressing part 16 can be inserted into the slot 32. See also: Figure 6 The pressing part 16 can engage with the lever 30 by inserting it into the slot 32 (also known as a locking connection). Specifically, after the pressing part 16 is inserted into the slot 32 of the lever 30, the slot 32 can restrict the pressing part 16 from rotating around the rotation center 1, that is, lock the pressing part 16. In this case, the pressing part 16 can be kept in its current position without rotating, thereby keeping the upper leaf 12 and the lower leaf 22 relatively open, thereby keeping the dilator 100 in an expanded state, that is, locking the expanded state of the dilator 100. In addition, when the upper leaf 12 rotates around the rotation center 1 toward the lower leaf 22 due to the squeezing action of the internal vaginal tissue, causing the pressing part 16 to rotate around the rotation center 1 in a direction away from the lever 30, by inserting the pressing part 16 into the slot 32, the firmness of the locking connection between the pressing part 16 and the lever 30 can be improved, thereby improving the stability of the dilator 100 in the expanded state.

[0112] In some examples, the lever 30 may have multiple slots 32 ( Figure 7 One of the slots 32 is schematically shown, and multiple slots 32 can be distributed along the length of the lever 30. In this case, by placing the pressing part 16 into the multiple slots 32 distributed on the lever 30, different opening degrees can be formed between the upper leaf 12 and the lower leaf 22, thereby facilitating the adjustment of the opening degree between the upper leaf 12 and the lower leaf 22. This allows the expander 100 to form a multi-level expansion state to adapt to different expansion degree requirements.

[0113] In some examples, the lever 30 may be rotatable about an axis in the grip portion 26. For example, the lever 30 may be rotatable about a third pivot 262 in the grip portion 26.

[0114] See in some examples Figure 7 The lever 30 is rotatable about the third pivot 262 and is mounted on the third protrusion 260 of the grip 26. In this case, by operating the lever 30 to rotate about the third pivot 262 toward, for example, the direction closer to the lower leaf 22, the pressing part 16 can be easily inserted into the slot 32 to lock the pressing part 16, thereby keeping the expander 100 in the expanded state. Alternatively, by operating the lever 30 to rotate about the third pivot 262 away from, for example, the pressing part 16 can be easily removed from the slot 32 to release the locking of the pressing part 16, thereby allowing the pressing part 16 to rotate about the rotation center 1 to adjust the opening degree between the upper leaf 12 and the lower leaf 22 or to switch the expander 100 to the closed state.

[0115] See in some examples Figure 2A The pressing part 16 may include a through hole 160, through which the locking rod 30 can pass to allow the pressing part 16 to be inserted into the locking slot 32. In this case, the pressing part 16 can be inserted into the locking slot 32 within the diameter range defined by the through hole 160, thereby improving the accuracy and convenience of inserting the pressing part 16 into the locking slot 32.

[0116] In some examples, after the pressing part 16 is removed from the slot 32, the pressing part 16 can be operated to rotate about the rotation center 1 in a direction away from the gripping part 26, thereby causing the upper leaf 12 to rotate about the rotation center 1 toward the lower leaf 22 until the upper leaf 12 and the lower leaf 22 close together, so that the expander 100 can be switched to the closed state (see Figure 6 ).

[0117] Figure 8 This is a schematic diagram illustrating the upper leaf component 10 as described in this disclosure example.

[0118] See in some examples Figure 8 The upper leaf assembly 10 may include a smoke exhaust pipe 18, which may be connected to the examination channel 40. In this case, the smoke generated in the examination channel 40 due to surgery can be quickly discharged to the outside through the smoke exhaust pipe 18.

[0119] See in some examples Figure 6 The exhaust pipe 18 can be located at the end of the upper leaf 12 near the first connecting portion 14. In this case, when the dilator 100 dilates the vagina, the exhaust pipe 18 can be deviated from the target object (e.g., the patient), thereby reducing the possibility of the exhaust pipe 18 touching the patient.

[0120] See in some examples Figure 8 The exhaust pipe 18 may include an outlet section 182 and an inlet section 184 that are interconnected. The inlet section 184 is used to absorb smoke and dust, and the outlet section 182 is used to discharge smoke and dust.

[0121] In some examples, the outlet section 182 may be located at one end of the upper leaf 12 near the first connecting portion 14, and the inlet section 184 may be located on the upper leaf 12 in a manner that fits against the inner side of the upper leaf 12 (see [reference]). Figure 8 In this configuration, smoke and dust within the inspection passage 40 can be drawn in through the inlet section 184 and discharged through the outlet section 182. Furthermore, by fitting the inlet section 184 against the inner side of the upper leaf 12, the impact of the exhaust pipe 18 on the inspection field of view and operating space can be reduced.

[0122] See in some examples Figure 8The exhaust pipe 18 may include a plurality of undercut teeth 1820, which may be distributed along the length of the outlet section 182. In this case, when the outlet section 182 of the exhaust pipe 18 is connected to an external duct (e.g., a flexible hose), the connection between the outlet section 182 and the flexible hose can be strengthened by fitting the flexible hose onto the undercut teeth 1820.

[0123] In some examples, the entry segment 184 may extend along the length of the upper leaf 12. See also [other examples]. Figure 8 The inlet section 184 may have multiple through holes 1840, which may be distributed along the extending direction of the inlet section 184. In this case, the multiple through holes 1840 of the inlet section 184 can be arranged along the extending direction of the inspection channel 40, thereby improving the efficiency of absorbing and discharging smoke and dust in the inspection channel 40.

[0124] In some examples, the outlet segment 182 can be bent relative to the inlet segment 184 at a preset angle, wherein the preset angle can be greater than 90 degrees and less than 120 degrees. In this case, when the dilator 100 dilates the vagina, the possibility of the outlet segment 182 touching the patient can be reduced, and the outlet segment 182 can be extended in a direction away from the examination channel 40, thereby reducing the impact of the outlet segment 182 on the examination field of view and operating space. In some examples, the preset angle can be 90 degrees, 95 degrees, 100 degrees, 105 degrees, 110 degrees, 115 degrees, or 120 degrees.

[0125] See in some examples Figure 2A The grip portion 26 may have a hollow cavity 264, which may extend along the length of the grip portion 26. In this case, a hollow structure can be formed inside the grip portion 26, thereby reducing the weight of the grip portion 26 and the overall weight of the expander 100, thus improving the convenience of holding the expander 100 with one hand.

[0126] In some examples, the grip 26 may include a closed first end and a second end with an opening, with the lower leaf 22 connected to the first end and the opening communicating with the hollow chamber 264. In this case, the opening at the second end facilitates the insertion of an examination device, such as an endoscope, into the hollow chamber 264, while the closed first end reduces contamination of the endoscope when the dilator 100 is used to dilate the vagina. This allows for a better fit between the dilator 100 and the endoscope for vaginal examination. In some examples, contaminants may include, for example, vaginal secretions or lubricating substances applied to the upper leaf 12 and lower leaf 22.

[0127] In some examples, the first end of the grip 26 may have a light-transmitting surface that faces the target direction D. In this case, when the endoscope is inserted into the hollow chamber 264, the light-transmitting surface facing the target direction D facilitates the endoscope in taking images of the vagina.

[0128] See in some examples Figure 2A The grip portion 26 may include a resilient button protection position 266, which can deform into the hollow cavity 264 when subjected to force. In this case, when the endoscope is placed into the hollow cavity 264, the endoscope can be operated more conveniently through the resilient area (e.g., pressing the buttons on the endoscope). In addition, it can better reduce the direct contact between the inspector and the endoscope, thereby reducing the possibility of the endoscope being contaminated by contaminants.

[0129] See in some examples Figure 2A The button protection position 266 can be located on the side of the grip 26 relative to the target direction D. In other words, when the inspector holds the expander 100 with one hand, the button protection position 266 can face the inspector. This improves the convenience for the inspector to operate the endoscope inserted into the hollow cavity 264 via the button protection position 266.

[0130] While the present disclosure has been specifically described above in conjunction with the accompanying drawings and examples, it is to be understood that the foregoing description does not limit the present disclosure in any way. Those skilled in the art can make modifications and variations to the present disclosure as needed without departing from its essential spirit and scope, and all such modifications and variations shall fall within the scope of the present disclosure.

Claims

1. A rotary lifting expander, characterized in that, The device includes an upper leaf assembly and a lower leaf assembly. The upper leaf assembly includes a pressing part, an upper leaf, and a first connecting part for connecting the pressing part and the upper leaf. The lower leaf assembly includes a gripping part, a lower leaf, and a second connecting part for connecting the gripping part and the lower leaf. The first connecting part cooperates with the second connecting part to allow the upper leaf assembly to rotate relative to the lower leaf assembly around the rotation center; The first connecting portion includes a guide groove and a first rotating shaft, the guide groove including a first protrusion extending toward the lower leaf to form a protrusion over the upper leaf. The second connecting portion includes a groove and a waist-shaped hole, wherein one end of the groove extending toward the upper leaf forms a second protrusion protruding from the lower leaf; The first protrusion is movably inserted into the groove, the second protrusion is inserted into the guide groove and can slide along the length direction of the guide groove, and the first rotating shaft is slidably disposed in the waist-shaped hole; When the pressing part is pressed, the second protrusion slides in the guide groove to move the first protrusion in the groove relative to the second protrusion to realize the expansion shaft expansion, and the first shaft slides in the waist-shaped hole to simultaneously realize the expansion push-pull expansion.

2. The rotary lifting expander according to claim 1, characterized in that, The guide groove includes a limiting part disposed on the first protrusion, the limiting part blocking the end of the guide groove near the lower leaf.

3. The rotary lifting expander according to claim 2, characterized in that, The limiting part is a second rotating shaft. When the first protrusion moves relative to the second protrusion, the second rotating shaft slides relative to the second protrusion in a manner that maintains line contact with the second protrusion.

4. The rotary lifting expander according to claim 3, characterized in that, The second shaft slides relative to the second protrusion in a rotating manner.

5. The rotary lifting expander according to claim 1, characterized in that, The waist-shaped hole is a round-headed elongated hole that curves toward the center of rotation.

6. The rotary lifting expander according to claim 1, characterized in that, The guide groove is an arc-shaped groove that bends toward the first rotating shaft.

7. The rotary lifting expander according to claim 1, characterized in that, The second protrusion is perpendicular to the side of the lower leaf.

8. The rotary lifting expander according to claim 1, characterized in that, It also includes a locking lever with a slot disposed on the grip portion, the slot cooperating with the pressing portion to lock the relative rotation between the upper leaf assembly and the lower leaf assembly.

9. The rotary lifting expander according to claim 8, characterized in that, The lever is mounted on the grip portion in a manner that allows it to rotate around an axis.

10. The rotary lifting expander according to claim 8, characterized in that, The number of slots is multiple, and the multiple slots are distributed along the length of the lever. The pressing part engages with the lever by being inserted into the slot.

11. The rotary lifting expander according to claim 8, characterized in that, The pressing part includes a through hole, and the locking rod passes through the through hole to place the pressing part into the locking slot.

12. The rotary lifting expander according to claim 1, characterized in that, The upper leaf and the lower leaf extend in the target direction. When viewed along the target direction, the gripping part has a first side and a second side that are opposite to each other. The first connecting part, the second connecting part, and the pressing part are located on the first side of the gripping part.

13. The rotary lifting expander according to claim 12, characterized in that, On the second side of the grip portion, the side edge of the upper leaf is separable from the side edge of the lower leaf.

14. The rotary lifting expander according to claim 1, characterized in that, The upper leaf and the lower leaf open to form an inspection channel. The upper leaf assembly includes a smoke exhaust pipe that communicates with the inspection channel. The smoke exhaust pipe is located at one end of the upper leaf near the first connecting part.

15. The rotary lifting expander according to claim 14, characterized in that, The exhaust pipe includes an outlet section and an inlet section that are interconnected. The outlet section is located at one end of the upper blade near the first connecting part, and the inlet section is located on the upper blade in a manner that fits against the inner side of the upper blade.

16. The rotary lifting expander according to claim 15, characterized in that, The exhaust pipe includes multiple undercut teeth, which are distributed along the length of the outlet section.

17. The rotary lifting expander according to claim 15, characterized in that, The inlet segment extends along the length direction of the upper leaf, and the inlet segment has a plurality of through holes distributed along the extension direction of the inlet segment.

18. The rotary lifting expander according to claim 15, characterized in that, The outlet section is bent relative to the inlet section at a preset angle, which is greater than 90 degrees and less than 120 degrees.

19. The rotary lifting expander according to claim 1, characterized in that, The grip portion is columnar and has a hollow cavity extending along the length of the grip portion.

20. The rotary lifting expander according to claim 19, characterized in that, The gripping part includes a closed first end and a second end with an opening, the lower leaf is connected to the first end, and the opening communicates with the hollow cavity.

21. The rotary lifting expander according to claim 20, characterized in that, The first end has a light-transmitting surface facing the target direction, wherein the target direction is the direction in which the upper leaf and the lower leaf extend.

22. The push-pull expander according to claim 19, characterized in that, The grip portion includes a resilient button protection position, which can deform into the hollow cavity when subjected to force.

23. The push-pull type expander according to claim 22, characterized in that, The button protection position is located on the side of the grip that faces away from the target direction.

Images