Visual inspection device for uterine mouth dilation progress

Abstract

The invention relates to the technical field of medical apparatus and instruments, in particular to a visual inspection device for uterine orifice dilation progress in obstetrical examination, which comprises a main tube body, a soft framework and a soft sleeve. The front end of an inner cavity of the main pipe body is provided with a miniature wireless camera assembly, and the soft framework is of a cylindrical cage-shaped structure and sleeves the periphery of the main pipe body. The front end of the soft framework is detachably fixed at the front end of the main pipe body, and the rear end can rotate around the axis of the main pipe body. By rotating the rear end, the middle part of the cartilage framework is screwed into a thread shape or a fried dough twist shape to reduce the size, so that the cartilage framework is conveniently placed in the vagina for a long time to avoid discomfort. When the expansion progress of the uterine mouth needs to be observed, the cartilage frame is loosened and rebounds to an open state under the elastic effect, the visual field is expanded, the camera shooting assembly obtains accurate images, and real-time monitoring is achieved. According to the scheme, the problems that a traditional method is high in subjectivity and infection risk and existing equipment is complex to operate are solved, flexible conversion between the retraction state and the opening state is achieved through the special structure of the cartilage frame, and the accuracy and safety of detection and the comfort level of a patient are improved.

Description

Technical Field

[0001] This invention relates to the field of medical device technology, and in particular to a visual detection device for cervical dilation progress during obstetric examinations. Background Technology

[0002] In obstetrics and gynecology clinical practice, monitoring cervical dilation is a crucial aspect of labor monitoring. Traditional methods for monitoring cervical dilation primarily rely on manual digital rectal examination, which depends on the doctor's experience and tactile sensation to determine the degree of dilation. However, manual examination is subjective, lacks continuity in long-term monitoring, and cannot reflect changes in cervical dilation in real-time and dynamically. Furthermore, different doctors may have varying judgments, and this method carries a risk of infection, especially in areas with high rates of infectious diseases, where the drawbacks of manual examination are even more pronounced.

[0003] With the development of medical technology, mechanical and electronic cameras have been introduced into the detection of cervical dilation progress. However, existing devices generally suffer from problems such as complex operation, large size, and inconvenience of use. Furthermore, many devices can cause patient discomfort or even damage to the cervix when placed for extended periods. Therefore, it is particularly necessary to develop a cervical dilation progress detection device that can be placed for extended periods, is easy to operate, has a simple structure, and minimizes impact on patients. Summary of the Invention

[0004] To address the aforementioned technical problems, this invention provides a visual detection device for cervical dilation progress. It aims to solve the issues of high subjectivity in traditional cervical dilation progress detection methods, the inconvenience of using large equipment, and the inability to conveniently and continuously detect cervical dilation progress. This device, through an innovative flexible skeleton design, achieves flexible switching between retracted and dilated states, allowing the device to be placed in the vagina for extended periods and quickly and accurately acquire cervical images when observation is needed, thereby enabling real-time, dynamic monitoring of cervical dilation progress.

[0005] The present invention employs a visual detection device for cervical dilation progress, comprising a main body, a soft skeleton, and a soft sleeve.

[0006] The inner cavity of the main body is equipped with a miniature wireless camera assembly for acquiring images of the front end of the main body. The camera of the miniature wireless camera assembly is located at the front end of the main body. A flexible skeleton is fitted around the outer periphery of the main body. The flexible skeleton has a cylindrical cage-like structure. The front end of the flexible skeleton is detachably connected to the front end of the main body, and its rear end is rotatably located at the rear end of the main body around the axis of the main body. The front and rear ends of the flexible skeleton are connected by a centrally arranged circumferential rib. The distance from the front end to the rear end of the flexible skeleton is less than the length of the central rib. A soft sleeve is fitted around the outer periphery of the flexible skeleton and is used to wrap around the flexible skeleton when it is expanded or retracted. The camera is exposed outside the soft sleeve or built inside the soft sleeve.

[0007] The cervix dilatation progress visual detection device provided by the scheme realizes flexible operation of the soft framework through innovative mechanical design. When the soft framework is retracted, the rear end of the soft framework is rotated to make the middle part of the soft framework twisted into a shape similar to a twisted dough, thereby retracting the originally expanded framework. In this retracted state, the overall size of the device is reduced, and it can be placed in the vagina for a long time without causing discomfort or long-term muscle damage to the patient.

[0008] When it is necessary to observe the cervix dilatation progress, the twisted or twisted dough-shaped soft framework can be easily loosened through simple operation, and the soft framework rebounds under its own elasticity to return to the original expanded state, thereby expanding the vagina. At this time, the miniature wireless camera assembly arranged at the front end of the device can more accurately and conveniently obtain image information of the cervix, realizing real-time monitoring and dynamic observation of the cervix dilatation progress.

[0009] This design not only solves the problems of strong subjectivity and high risk of infection in traditional detection methods, but also overcomes the shortcomings of complex operation and inconvenience of existing equipment. Through the special structural design of the soft framework, flexible conversion between the retracted and expanded states of the device is realized, making long-term placement and real-time observation possible. This innovative cervix dilatation progress visual detection device not only improves the accuracy and safety of detection, but also greatly improves the comfort of patients and the convenience of equipment.

[0010] In some embodiments, the inner hole of the rear end of the soft framework is provided with a plurality of insertion slots distributed radially around the axis of the main pipe body, and the rear end of the main pipe body is provided with an insertion piece that can be inserted into or separated from the insertion slots. This design enables the rear end of the soft framework to be fixed and rotated through the cooperation of the insertion slots and the insertion piece, thereby conveniently controlling the retracted and expanded states of the soft framework. The structure of the insertion slots and the insertion piece is simple and convenient to operate, and can effectively realize stable fixation and flexible rotation of the soft framework.

[0011] In some embodiments, the main pipe body includes a front pipe and a rear pipe; the front pipe internally houses the miniature wireless camera assembly; the front end of the rear pipe is connected to the front pipe, the middle or tail of the rear pipe is sleeved with the insertion piece; the rear end of the soft framework is sleeved outside the rear pipe, and the rear end insertion slot of the soft framework corresponds to the inside and outside of the insertion piece. By dividing the main pipe body into a front pipe and a rear pipe, and reasonably arranging the miniature wireless camera assembly and the insertion piece, the structure of the device is more compact while being modularized and convenient to assemble. The butt joint design of the front and rear pipes makes the assembly and disassembly of the device more convenient, which can ensure the stability and image quality of the camera assembly at the same time.

[0012] In some embodiments, the rear tube comprises a rear tube outer cylinder, a rear tube end cover and a mandrel; the front end of the rear tube outer cylinder is fixedly connected with the front tube; the rear tube end cover is located at the rear end of the rear tube, and the rear tube end cover is in sliding abutment with the rear tube outer cylinder; the mandrel is arranged in the rear tube outer cylinder; a coil spring member is arranged on the rear tube outer cylinder, one end of the coil spring member is fixed to the outer periphery of the mandrel, and the other end of the coil spring member extends outward in the radial direction of the rear tube outer cylinder through a window formed on the rear tube outer cylinder to form the insert; the front end of the mandrel is rotatably connected with the front tube, and the rear end of the mandrel is connected with the rear tube end cover and rotatably connected with the rear end of the rear tube outer cylinder.

[0013] In this way, when the coil spring member is loosened, the insert can extend into the insertion slot to lock the rear end of the entire soft skeleton; when the locking of the soft skeleton state is to be released, the rear tube end cover is rotated to drive the mandrel to rotate, so that the coil spring is wound up, the insert is withdrawn from the insertion slot, and then the rear end of the soft skeleton is rotated to adjust the opening degree of the soft skeleton, and after the opening degree is adjusted, the rear tube end cover is rotated or loosened, so that the mandrel is reset, and the insert is inserted into a new insertion slot to complete the positioning and locking of the soft skeleton state.

[0014] Here, the design of the coil spring member can enable the insert to be automatically reset through cooperation with the window of the rear tube outer cylinder even if the second elastic member is not arranged, thereby improving the operation convenience of the device.

[0015] In some embodiments, there is another solution, in which the rear tube comprises a rear tube outer cylinder, a rear tube end cover and a mandrel; the front end of the rear tube outer cylinder is fixedly connected with the front tube; the rear tube end cover is located at the rear end of the rear tube, and the rear tube end cover is in sliding abutment with the rear tube outer cylinder; the mandrel is arranged in the rear tube outer cylinder; a camshaft is sleeved on the middle segment of the mandrel; a through groove is formed on the rear tube outer cylinder, and the insert is slidably arranged in the through groove; the side of the camshaft away from the mandrel is in abutment with the insert; the front end of the mandrel is rotatably connected with the front tube, and the rear end of the mandrel is connected with the rear tube end cover and rotatably connected with the rear end of the rear tube outer cylinder.

[0016] Through the design of the camshaft and the through groove, the accurate control and stable sliding of the insert are realized, so that the retracting and opening operation of the soft skeleton is more smooth. The peak and valley design of the camshaft further improves the positioning accuracy and stability of the insert, and the operation principle is similar to that of the coil spring member described above.

[0017] In some embodiments, the soft sleeve further comprises a tail capsule portion for wrapping the rear part of the rear tube, the tail capsule portion is a sleeve structure made of elastic material, and the tail capsule portion has an open end.

[0018] In some embodiments, the through-slots are symmetrically distributed on the rear tube outer cylinder relative to the mandrel axis, and the inserts are slidably arranged in the through-slots; the camshaft is provided with a number of wave crests corresponding to the number of inserts and wave troughs between two wave crests, the wave crests being used to be inserted into the insert slots, and adjacent inserts are connected by a first elastic member.

[0019] The symmetrically distributed through-slots and wave crests make the movement of the inserts more balanced and symmetric, and improve the stability of the cartilage frame. The connection design of the first elastic member further enhances the resetting ability of the inserts, making the operation more convenient.

[0020] In some embodiments, the front end of the cartilage frame is a hinged seat provided on the main tube body, and the front end of the middle rib is hinged to the hinged seat, so that when the cartilage frame is expanded, the farthest position of the middle rib from the main tube body approaches the front end of the main tube body, and this farthest position is referred to as the highest point. The curvature of the middle rib gradually decreases from the highest point to the rear end of the cartilage frame.

[0021] In this way, the highest point can be arranged at the front end, which is convenient for better observation.

[0022] In some embodiments, the mandrel is connected to the front tube by a second elastic member.

[0023] The design of the second elastic member makes the connection of the mandrel and the front tube more flexible, so that the mandrel can automatically reset. The second elastic member can be a torsional spring, rubber, spring, etc.

[0024] In some embodiments, the front end of the rear tube end cover abuts against the rear end of the cartilage frame, the length of the insert in the axial direction is less than the length of the insert slot in the axial direction, and a convex ring is arranged on the inner side of the cartilage frame, and a gap is left between the rear end of the front tube and the convex ring in the axial direction, so that the cartilage frame can slide on the main tube body.

[0025] In this way, not only is assembly and disassembly convenient, but also the cartilage frame can be retracted and expanded in the circumferential direction, and the expansion degree can be further temporarily adjusted by sliding the rear end of the cartilage frame in the axial direction, thereby ensuring high flexibility and strain capacity of the entire device.

[0026] In some embodiments, the end face of the rear tube end cover is provided with a protrusion, and a boss is extended in the axial direction on the protrusion, and a through hole is formed in the boss for threading.

[0027] In some embodiments, anti-skid protrusions are circumferentially arranged on the outer side of the rear end of the cartilage frame. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1Figure 6 is a schematic diagram of the structure of the device for visual detection of the progress of cervical dilation after the soft sleeve is removed during expansion;

[0029] Figure 2 Figure 7 is a schematic diagram of the structure of the device for visual detection of the progress of cervical dilation after the soft sleeve is removed during expansion adjustment;

[0030] Figure 3 Figure 8 is a schematic diagram of the structure of the device for visual detection of the progress of cervical dilation with the soft sleeve during expansion adjustment;

[0031] Figure 4 Figure 9 is a schematic diagram of the structure of the device for visual detection of the progress of cervical dilation after the soft sleeve is removed during retraction;

[0032] Figure 5 Figure 10 is a schematic diagram of the structure of the device for visual detection of the progress of cervical dilation with the soft sleeve during retraction;

[0033] Figure 6 Figure 11 is a schematic diagram of the structure of the device for visual detection of the progress of cervical dilation with the soft sleeve in a front end hinged manner;

[0034] Figure 7 Figure 12 is a schematic diagram of the device for locking the soft skeleton with a plug and a slot;

[0035] Figure 8 Figure 13 is a schematic diagram of the device for adjusting the soft skeleton with a plug and a slot;

[0036] Figure 9 Figure 14 is a schematic diagram of another device for locking the soft skeleton with a plug and a slot;

[0037] Figure 10 Figure 15 is a schematic diagram of another device for adjusting the soft skeleton with a plug and a slot;

[0038] Figure 11 Figure 16 is a schematic diagram of the mandrel and the coil spring in the device;

[0039] Figure 12 Figure 17 is a schematic diagram of the device for visual detection of the progress of cervical dilation from the side;

[0040] Figure 13 Figure 18 is a schematic diagram of the device for visual detection of the progress of cervical dilation from the side; Figure 12 Figure 19 is a schematic diagram of the device for visual detection of the progress of cervical dilation from the side;

[0041] Figure 14 Figure 20 is a schematic diagram of the T-shaped slot on the front tube in the device;

[0042] Figure 15 FIG. 1 is a schematic view of a structure of a uterine cervix dilation progress visual detection device with a soft sleeve with a tail capsule portion in an embodiment;

[0043] 1 - main body; 110 - front tube; 120 - rear tube; 121 - rear tube outer cylinder; 122 - rear tube end cover; 123 - mandrel; 130 - protrusion; 131 - boss; 140 - T-shaped slot;

[0044] 2 - soft frame; 210 - middle rib; 211 - hinged seat; 220 - insertion slot; 230 - anti-skid protrusion;

[0045] 3 - soft sleeve; 310 - tail capsule portion;

[0046] 4 - camera;

[0047] 5 - coil spring member;

[0048] 6 - camshaft;

[0049] 7 - protruding plate;

[0050] 8 - first elastic member;

[0051] 9 - second elastic member. DETAILED DESCRIPTION

[0052] The technical solutions in the embodiments of the present application are described below with reference to the drawings in the embodiments of the present application. In the embodiments of the present application, the words such as “exemplarily” or “for example” are used to represent as an example, illustration or description. Any embodiment or design scheme described as “exemplarily” or “for example” in the embodiments of the present application should not be interpreted as more preferred or more advantageous than other embodiments or design schemes. In fact, the words such as “exemplarily” or “for example” are intended to present the relevant concept in a specific manner.

[0053] Embodiment 1

[0054] Reference Figures 1-14The application discloses a visual detection device for cervical dilatation progress, which comprises a main pipe body 1, a soft framework 2 and a soft sleeve 3. An inner cavity of the main pipe body 1 is provided with a miniature wireless camera assembly for acquiring an image of a front end of the main pipe body 1, and a camera head 4 of the miniature wireless camera assembly is arranged at the front end of the main pipe body 1. The soft framework 2 is sleeved on the outer periphery of the main pipe body 1, and is in a cylindrical cage type structure. The front end of the soft framework 2 is detachably connected to the front end of the main pipe body 1, and the rear end of the soft framework 2 is arranged at the rear end of the main pipe body 1 and can rotate around the axis of the main pipe body 1. The front end and the rear end of the soft framework 2 are connected through a middle rib 210 arranged in a ring shape, and the distance from the front end to the rear end of the soft framework 2 is smaller than the length of the middle rib 210. The soft sleeve 3 is sleeved on the outer periphery of the soft framework 2 and is used for being wrapped on the soft framework 2 when the soft framework 2 is expanded or retracted, and the camera head 4 is exposed outside the soft sleeve 3. The soft sleeve 3 can be detachably arranged outside the soft framework 2 and wrapped, and can be replaced as a disposable component. The cervical dilatation progress visual detection device can be used as a disposable tool, and of course, the framework and the internal components can be separated from the soft sleeve 3 and reused. For example, a transparent film is additionally arranged on the camera head at the front end and the soft sleeve 3 to form an integral whole, and the rear end of the soft framework is also wrapped through the soft sleeve. (The rear end handle part of the soft framework 2 wrapped by the soft sleeve 3 is not shown in the figure)

[0055] The main pipe body 1 is the core support structure of the whole device, and the miniature wireless camera assembly is arranged at the front end of the main pipe body 1. The main pipe body 1 is preferably made of medical-grade stainless steel or medical plastic to ensure corrosion resistance and biocompatibility during use. The main pipe body 1 determines the basic size of the whole device, and the length thereof is designed to be about 20 mm to 50 mm, and the outer diameter thereof is designed to be 5 mm to 15 mm, so as to adapt to the physiological structure of most patients. The miniature wireless camera assembly is arranged in the inner cavity of the front end of the main pipe body 1. The assembly transmits image data to an external display device through wireless transmission technology, and the external display device can be a computer display screen, a smart phone, a tablet computer and the like. The lens part of the camera head 4 is exposed at the front end of the main pipe body 1, so as to ensure that the shooting field of view is not blocked. The camera head 4 can be a camera head with a light source, and can also be an infrared camera head.

[0056] The soft skeleton 2 is preferably made of any one of medical grade silicone, polyether ether ketone, and thermoplastic polyurethane, which have good elasticity, toughness, and biocompatibility. The front end of the soft skeleton 2 is detachably fixed to the front end of the main pipe body 1 by a buckle or screw structure, ensuring that it can be conveniently detached and replaced when necessary. Specifically, a T-shaped key on the inner side of the front end of the soft skeleton 2 can be matched with a T-shaped slot 140 on the main pipe body 1. The rear end is matched with a plug on the rear end of the main pipe body 1 through a slot 220, achieving rotation and fixation. During use, the doctor rotates the rear end of the soft skeleton 2 to make the middle part twisted into a shape similar to a twisted dough, so as to retract the soft skeleton 2. In this state, the device can be placed in the vagina for a long time. When it is necessary to observe the progress of cervical dilation, the soft skeleton 2 is released, and it automatically rebounds and returns to the initial expansion state due to its own elastic material properties, thereby effectively expanding the vagina. At this time, the miniature wireless camera assembly arranged at the front end of the device can more accurately and conveniently obtain image information of the cervix, realizing real-time monitoring and dynamic observation of the progress of cervical dilation.

[0057] The soft sleeve 3 described above is sleeved on the outer periphery of the soft skeleton 2, and is used to wrap the soft skeleton 2 when the soft skeleton 2 is expanded or retracted, protecting the contact surface between the soft skeleton 2 and the human body tissue. The soft sleeve 3 is preferably made of medical silicone or latex material, which has good elasticity and softness. The length of the soft sleeve 3 matches the length of the soft skeleton 2, and the outer diameter is slightly larger than the outer diameter of the soft skeleton 2 in the retracted state. The soft sleeve 3 is fixed to the outer periphery of the soft skeleton 2 by adhesion or buckling, ensuring that it will not slip off when the soft skeleton 2 is expanded or retracted. The soft sleeve 3 can stretch and contract with the expansion or retraction of the soft skeleton 2, providing continuous protection and patient comfort.

[0058] The miniature wireless camera assembly described above includes a miniature camera 4 and a wireless transmission module, which can transmit image data to an external display device in real time. During use, the miniature wireless camera assembly transmits image data to an external display device through wireless transmission technology, and the doctor can observe the progress of cervical dilation in real time through the display device.

[0059] The cervical dilation progress visual detection device provided in the embodiment can retract the soft skeleton 2 by rotating the rear end of the soft skeleton 2, so that the middle part of the soft skeleton 2 is twisted into a shape similar to a screw or a twisted dough, thereby retracting the skeleton which is originally in an expanded state. In this retracted state, the overall size of the device is significantly reduced, so that it can be placed in the vagina for a long time without causing discomfort to the patient or causing continuous compression damage to the surrounding muscle tissue. When it is necessary to observe the progress of cervical dilation, the operator only needs to release the twisted soft skeleton 2 by simple rotation. After being released, the soft skeleton 2 automatically rebounds and returns to the initial expanded state due to its own elastic material properties, thereby effectively expanding the vagina. At this time, the miniature wireless camera assembly arranged at the front end of the device can more accurately and conveniently obtain image information of the cervix, realizing real-time monitoring and dynamic observation of the progress of cervical dilation.

[0060] Embodiment 2

[0061] On the basis of embodiment 1, the inner hole of the rear end of the soft skeleton 2 is provided with a plurality of slots 220 distributed radially around the axis of the main pipe body 1, and the rear end of the main pipe body 1 is provided with a plug which can be inserted into or separated from the slots 220.

[0062] This design enables the rear end of the soft skeleton 2 to be fixed and rotated through the cooperation of the slots 220 and the plug, thereby facilitating the control of the retracted and expanded states of the soft skeleton 2. The slots 220 described above can be concave arc-shaped slots such as Figure 9 and Figure 10 or narrow plate-shaped slots such as Figure 7 and Figure 8 The corresponding plug is also designed differently according to the shape of the slots 220. The arc-shaped slots can adopt a plug plate with a round cross-section, and the plate-shaped slots can adopt a plate or a strip as the plug.

[0063] During the cooperation of the slots 220 and the plug, the plug can be completely separated or can not be completely separated from the slots 220 during transposition, which can be adjusted according to the elasticity of the soft skeleton 2. The structure of the slots 220 and the plug is simple and easy to operate, and can effectively realize the stable fixation and flexible rotation of the soft skeleton 2.

[0064] Embodiment 3

[0065] On the basis of embodiment 1 or 2, the main pipe body 1 comprises a front pipe 110 and a rear pipe 120; the miniature wireless camera assembly is accommodated in the front pipe 110; the front end of the rear pipe 120 is connected to the front pipe 110, the middle or tail of the rear pipe 120 is sleeved with the plug; the rear end of the soft skeleton 2 is sleeved outside the rear pipe 120, and the rear end slots 220 of the soft skeleton 2 correspond to the inside and outside of the plug. The miniature wireless camera assembly is built-in the front pipe 110, and the battery, wireless communication module and other components in the miniature wireless camera assembly can be arranged in the front pipe 110 in an axial distribution manner.

[0066] The front pipe 110 and the rear pipe 120 can be connected through threads or buckling. In order to ensure the coaxiality and stability of the front pipe 110 and the rear pipe 120 after connection, a positioning ring or a stop can be arranged at the connection position to effectively prevent eccentricity and looseness after connection, and ensure the stability of the device during use. The connection between the front pipe 110 and the rear pipe 120 can be waterproofed, and an O-ring or a sealing gasket can be added at the connection position to ensure the sealing of the connection position and prevent liquid from entering the inside of the main pipe body 1 and affecting the normal work of the miniature wireless camera assembly.

[0067] By dividing the main structure into the front tube 110 and the rear tube 120, and optimizing the reasonable layout of the miniature wireless camera module and its plug-in, the compactness of the device structure is realized, and the modular design level and assembly convenience are improved. The butt joint design of the front tube 110 and the rear tube 120 further simplifies the assembly and disassembly process of the device, thereby effectively guaranteeing the reliability of the image quality on the premise of ensuring the stability of the camera module.

[0068] Embodiment 4

[0069] With reference to Figure 7 , Figure 8 and Figure 11 , on the basis of any of the above embodiments, the rear tube 120 comprises a rear tube outer cylinder 121, a rear tube end cover 122 and a mandrel 123; the front end of the rear tube outer cylinder 121 is fixedly connected with the front tube 110; the rear tube end cover 122 is located at the rear end of the rear tube 120, and the rear tube end cover 122 is in sliding abutment with the rear tube outer cylinder 121; the mandrel 123 is arranged in the rear tube outer cylinder 121, and a coil spring member 5 is arranged on the rear tube outer cylinder 121, one end of the coil spring member 5 being fixed to the outer periphery of the mandrel 123, and the other end of the coil spring member 5 extending outward in the radial direction of the rear tube outer cylinder 121 to form the plug-in through a window formed on the rear tube outer cylinder 121; the front end of the mandrel 123 is rotatably connected with the front tube 110, and the rear end of the mandrel 123 is connected with the rear tube end cover 122 and rotatably connected with the rear end of the rear tube outer cylinder 121.

[0070] The design ensures that when the coil spring member 5 is released, the plug-in can be accurately embedded in the rear end slot 220, thereby realizing effective locking of the rear end of the soft frame 2. When it is necessary to release the locking state of the soft frame 2, the mandrel 123 is driven to rotate by rotating the rear tube end cover 122, the coil spring is wound, and then the plug-in is withdrawn from the slot 220. At this time, the opening degree of the soft frame 2 is adjusted by rotating the rear end of the soft frame 2, and then the rear tube end cover 122 is turned or loosened, so that the mandrel 123 is reset, the plug-in is embedded in the new slot 220 again, and the positioning and locking of the state of the soft frame 2 are completed.

[0071] Embodiment 5

[0072] On the basis of any of the above embodiments, there is also a solution that the rear tube 120 comprises a rear tube outer cylinder 121, a rear tube end cover 122 and a mandrel 123; the front end of the rear tube outer cylinder 121 is butted and fixed with the front tube 110; the rear tube end cover 122 is located at the rear end of the rear tube 120, and the rear tube end cover 122 is in sliding abutment with the rear tube outer cylinder 121; the mandrel 123 is arranged in the rear tube outer cylinder 121; a camshaft 6 is sleeved on the middle section of the mandrel 123, a through slot is opened on the rear tube outer cylinder 121, and the insert is slidably arranged in the through slot, and the insert can be provided as a lug 7 matched with the arc-shaped slot; the side of the camshaft 6 away from the mandrel 123 is in abutment with the insert; the front end of the mandrel 123 is rotationally connected with the front tube 110, and the rear end of the mandrel 123 is connected with the rear tube end cover 122 and rotationally connected with the rear end of the rear tube outer cylinder 121.

[0073] Specifically, the through slots are symmetrically distributed on the rear tube outer cylinder 121 relative to the axis of the mandrel 123, and the inserts are slidably arranged in the through slots; the camshaft 6 is provided with a number of wave crest portions corresponding to the number of inserts and a wave trough portion between two wave crest portions, the wave crest portions are used for being inserted into the insertion slots 220, and adjacent inserts are connected by a first elastic member 8. The lug 7 extends with a connecting plate on both sides, and the connecting plates between adjacent lugs 7 are connected by the first elastic member 8, and the first elastic member 8 can be a spring.

[0074] In combination Figure 9 and Figure 10 , the above-mentioned camshaft 6 can adopt an axis member with an elliptical cross section, and the spacing between the upper and lower inserts is changed by rotating the mandrel 123, so as to operate the insertion and disengagement of the inserts in the insertion slots 220. The through slots of the above-mentioned rear tube outer cylinder 121 not only enable the inserts to extend out, but also play a role in limiting the inserts in the circumferential direction and guiding the inserts in the radial direction.

[0075] Embodiment 6

[0076] Referring to Figure 6 , on the setting of the soft framework 2, the solution of moving the highest point of the distraction forward can also be adopted, that is, the front end of the soft framework 2 is a hinged seat 211 arranged on the main tube body 1, and the front end of the middle rib 210 is hinged to the hinged seat 211, so as to make the middle rib 210 closest to the front end side of the main tube body 1 when the soft framework 2 is distracted, and the farthest position is marked as the highest point; the curvature of the middle rib 210 gradually decreases from the highest point to the rear end of the soft framework 2. In this simple way, the above-mentioned highest point can be deployed at the front end, which can be better observed. The curvature of the above-mentioned middle rib 210 tends to zero at the end, so that it is parallel to the axis of the main tube body 1.

[0077] Embodiment 7

[0078] On the basis of any of the above embodiments, the mandrel 123 is connected with the front tube 110 by a second elastic element 9, for allowing the mandrel 123 to be automatically reset, and the second elastic element 9 can be a torsion spring, rubber, spring, etc.

[0079] Embodiment 8

[0080] On the basis of any of the above embodiments, the front end of the rear tube end cover 122 abuts against the rear end of the soft frame 2, the length of the insert in the axial direction is less than the length of the slot 220 in the axial direction; the inside of the soft frame 2 is provided with a convex ring 230, and in the axial direction, there is a gap between the rear end of the front tube 110 and the convex ring 230, for allowing the soft frame 2 to be slidable on the main tube body 1.

[0081] In this way, not only is the assembly and disassembly convenient, but also the soft frame 2 can be retracted and expanded in the circumferential direction, and the expansion degree can be further temporarily fine-tuned by sliding the rear end of the soft frame 2 in the axial direction, so as to guarantee high flexibility and strain capacity of the entire device.

[0082] Embodiment 9

[0083] On the basis of any of the above embodiments, the end face of the rear tube end cover 122 is provided with a convex block 130, and a convex boss 131 is extended in the axial direction on the convex block 130, which is located in the middle or on both sides of the convex block 130, and a through hole for threading is opened on the convex boss 131. The design of the convex block 130 and the convex boss 131 provides convenience for fixing and operating the device, and the through hole design allows the device to be pulled by a wire, so as to facilitate pulling out the entire device, and further improves the convenience of the device.

[0084] Embodiment 10

[0085] On the basis of any of the above embodiments, the rear end outside of the soft frame 2 is circumferentially arranged with anti-skid convex ribs 230. The design of the anti-skid convex ribs 230 enhances the friction force of the rear end of the soft frame 2, and the rear end of the soft frame 2 serves as a convenient handle for screwing or rotating.

[0086] Embodiment 11

[0087] Referring to the drawings, the soft sleeve 3 further comprises a tail capsule 310 for wrapping the rear part of the rear tube 120, the tail capsule 310 is a sleeve structure made of elastic material, and the end of the tail capsule 310 is open. Here, the tail capsule 310 can be made of the same material as the soft sleeve 3, and it is mainly used as a part of the soft sleeve 3 to completely wrap the entire soft framework 2 and the main tube body 1, and the end is tied and closed, and the rear part of the rear tube 120 can be operated such as rotating through the tail capsule 310. The soft sleeve 3 with the tail capsule 310 can not only completely wrap the entire soft framework 2 and the main tube body 1 to ensure sealing, but also make the soft sleeve 3 be used as a disposable product, so that the soft framework 2 and the main tube body 1 do not need to be replaced.

[0088] It will be apparent to those skilled in the art that the application is not limited to the details of the above-exemplified embodiments and that the present application can be implemented in other particular forms without departing from the spirit or essential characteristics of the present application. The embodiments should therefore be considered in all respects as illustrative and not restrictive, the scope of the application being indicated by the appended claims rather than by the above description, and it is intended that all changes and modifications which come within the meaning and range of equivalency of the claims are resolutely intended to be embraced thereby. No reference signs in the claims should be considered as limiting the scope of the claims with respect to the figures in which the application is described.

Claims

1. A device for visual detection of the progress of cervical dilation, characterized in that, The device comprises: a main tube, an inner cavity of which is provided with a miniature wireless camera assembly for obtaining images of the front end of the main tube, and a camera of the miniature wireless camera assembly is arranged at the front end of the main tube; a soft skeleton, which is sleeved on the outer periphery of the main tube and has a cylindrical cage structure; the front end of the soft skeleton is detachably connected to the front end of the main tube, and the rear end of the soft skeleton is rotatably arranged at the rear end of the main tube; the front end and the rear end of the soft skeleton are connected through a middle part rib arranged in a ring shape, and the distance from the front end to the rear end of the soft skeleton is less than the length of the middle part rib; a soft sleeve, which is sleeved on the outer periphery of the soft skeleton and is used for wrapping the soft skeleton when the soft skeleton is expanded or retracted; the camera is exposed outside the soft sleeve or is built-in the soft sleeve.

2. The device according to claim 1, wherein an inner hole of the rear end of the soft skeleton is provided with radially distributed insertion slots around the axis of the main tube, and the rear end of the main tube is provided with an insertion piece which can be inserted into or separated from the insertion slots.

3. The device according to claim 2, wherein the main tube comprises: a front tube, which internally accommodates the miniature wireless camera assembly; a rear tube, a front end of which is butted against the front tube, and a middle part or a tail part of the rear tube sleeves the insertion piece; the rear end of the soft skeleton is sleeved on the outer periphery of the rear tube, and the rear end insertion slots of the soft skeleton correspond to the insertion piece.

4. The device according to claim 3, wherein the rear tube comprises: a rear tube outer cylinder, a front end of which is butted against and fixed to the front tube; a rear tube end cover, which is located at the rear end of the rear tube and is in sliding abutment with the rear tube outer cylinder; a mandrel, which is arranged in the rear tube outer cylinder, and a coil spring piece is arranged on the rear tube outer cylinder, one end of the coil spring piece is fixed to the outer periphery of the mandrel, the other end of the coil spring piece extends outward in the radial direction of the rear tube outer cylinder through a window formed on the rear tube outer cylinder to form the insertion piece; the front end of the mandrel is rotationally connected to the front tube, the rear end of the mandrel is connected to the rear tube end cover, and the rear end of the mandrel is rotationally connected to the rear end of the rear tube outer cylinder.

5. The device according to claim 3, wherein the rear tube comprises: a rear tube outer cylinder, a front end of which is butted against and fixed to the front tube; a rear tube end cover, which is located at the rear end of the rear tube and is in sliding abutment with the rear tube outer cylinder; a mandrel, which is arranged in the rear tube outer cylinder; a camshaft is sleeved on the middle segment of the mandrel, a through slot is formed on the rear tube outer cylinder, and the insertion piece is slidably arranged in the through slot; the side of the camshaft away from the mandrel is in abutment with the insertion piece; the front end of the mandrel is rotationally connected to the front tube, the rear end of the mandrel is connected to the rear tube end cover, and the rear end of the mandrel is rotationally connected to the rear end of the rear tube outer cylinder.

6. The device according to claim 5, wherein the through slots are symmetrically distributed on the rear tube outer cylinder relative to the axis of the mandrel, and the insertion pieces are slidably arranged in the through slots. ​ ​ ​ ​ ​ The camshaft is provided with wave peak portions corresponding to the number of inserts and wave valley portions between the wave peak portions, the wave peak portions being used for inserting into the insert slots; adjacent inserts are connected by first elastic members. 7.The visual detection device for cervical dilation progress according to claim 1, characterized in that, The front end of the soft skeleton is a hinged seat provided on the main pipe body, the front end of the middle rib is hinged to the hinged seat, so that when the soft skeleton is expanded, the farthest position of the middle rib from the main pipe body approaches the front end side of the main pipe body, and the farthest position is recorded as the highest point; the curvature of the middle rib gradually decreases from the highest point to the rear end of the soft skeleton. 8.The visual detection device for cervical dilation progress according to any one of claims 4, 5, 6 or 7, characterized in that, The core shaft is connected to the front pipe by a second elastic member. 9.The visual detection device for cervical dilation progress according to any one of claims 4, 5, 6 or 7, characterized in that, The front end of the rear pipe end cover abuts against the rear end of the soft skeleton, and the length of the insert in the axial direction is less than the length of the insert slot in the axial direction; The inner side of the soft skeleton is provided with a convex ring, and in the axial direction, there is a gap between the rear end of the front pipe and the convex ring, so that the soft skeleton can slide on the main pipe body. 10.The visual detection device for cervical dilation progress according to any one of claims 4, 5, 6 or 7, characterized in that, The end face of the rear pipe end cover is provided with a convex block, and convex bosses are extended on the convex block in the axial direction, the convex bosses are located in the middle or on both sides of the convex block, and the convex bosses are provided with through holes for threading.

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