Medical vagina endoscope

Abstract

The invention relates to the field of medical auxiliary instruments, in particular to a medical vaginal speculum. The device comprises a handheld control assembly, an expansion adjusting assembly, a pressure limiting assembly, a lubricating assembly and a lighting assembly. According to the structure, the expansion disc is mainly driven and guided through the adjusting knob, the expanding rods evenly distributed in the circumferential direction are driven to synchronously move in the radial direction, and uniform expansion from the circle center to the outside is achieved; the outer side of the distraction rod is sleeved with an elastic air bag to realize flexible contact; a pressure triggering type lubricating assembly is arranged at the far end, and an adjustable illuminating lamp is arranged at the top. The device solves the problems that a traditional endoscope is not uniform in expansion, tissue damage is easily caused, the rigid contact comfort degree is poor, the implantation resistance is large, and view illumination is insufficient. Uniform and controllable radial expansion is achieved, and the operation risk is remarkably reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to medical auxiliary devices, in particular to a medical vaginal speculum. BACKGROUND

[0002] As a basic instrument in gynecological examination and surgery, the rationality of the design of the vaginal speculum is directly related to the convenience of clinical operation, the comfort of patients and the accuracy of diagnosis and treatment. The traditional vaginal speculum is mostly made of metal or hard plastic in the shape of a duck bill. Although it is widely used, it has many limitations in actual use.

[0003] Firstly, in terms of operational convenience, most traditional products require the user to use both hands to complete the opening and fixing action. While holding the speculum with one hand, it is difficult for medical personnel to take samples, provide lighting, perform flushing or operate other instruments, which not only reduces the efficiency of diagnosis and treatment, but also seriously hinders the smoothness of the process in primary medical institutions or single-person operation emergency scenarios.

[0004] Secondly, in terms of patient comfort and safety, the opening blades of the traditional speculum are generally made of metal or hard plastic. The hard edges directly contact and press the tender vaginal mucosa, and if the angle or force is not properly controlled, it can easily cause friction damage to the mucosa, causing significant pain, discomfort and nervous anxiety in patients, and even may cause iatrogenic complications such as vaginal wall laceration due to excessive opening.

[0005] Thirdly, in terms of functional visual field exposure, the traditional design has inherent defects. It can only provide expansion force in the up and down directions and cannot effectively push away the tissues on the left and right sides of the vagina. For obese patients, patients with loose vaginal walls or postpartum vaginal bulging, the surrounding soft tissues are easily protruding from the gap between the blades, which seriously blocks the view, leading to incomplete observation and operation, greatly increasing the difficulty of missed diagnosis and surgical operation.

[0006] Although some improved designs have appeared in the prior art, for example, the scheme proposed in patent CN219613823U, which lengthens the lower clamping piece and adds a lateral "extension piece" structure, to some extent, improves the fit with the vaginal structure and attempts to expand the tissue from the side, but it is still essentially a mechanical hard opening improvement. It fails to solve the comfort problem caused by hard materials, and its complex multi-piece structure may increase the difficulty of placement and new discomfort points; at the same time, its opening force still completely depends on the experience and feeling of medical personnel, lacks an active and quantitative safety limiting mechanism, and still has potential damage risk to patients with fragile tissues. SUMMARY

[0007] The purpose of the present application is to overcome the above existing problems.

[0008] To achieve the above object, the technical idea adopted by the present application to solve its technical problems is: The up-down opening mode of the traditional expansion assembly often causes local pressure concentration, which is easy to cause mucosa injury, so the expansion assembly is designed to expand uniformly from the center to the periphery, which is more in line with the natural form of the vagina and can effectively disperse the pressure and improve the comfort.

[0009] In order to further buffer the contact between mechanical parts and human tissues, a flexible air bag is arranged on the outside of the expansion assembly. This flexible air bag not only plays a role of sanitary isolation and prevents cross infection, but more importantly, it can form a soft air cushion during the opening process to avoid direct compression of the vaginal wall by hard materials. At the same time, the flexible air bag can also block the surrounding adipose tissue from entering the field of view, which is especially suitable for obese patients.

[0010] When the flexible air bag is subjected to a certain threshold pressure of the vaginal wall, the air pressure will push the internal mechanical structure to trigger the locking device, automatically preventing the expansion assembly from continuing to expand, thereby preventing tissue damage caused by excessive opening. It can effectively reduce the risk of operation.

[0011] In addition, in order to improve the smoothness during placement, the end of the endoscope is designed with a smooth shape and a self-lubricating structure. The pressure of the vaginal end silicone plate automatically controls the amount of lubricating liquid extruded, the greater the pressure, the more liquid, making the entry process more smooth and natural, and reducing the discomfort caused by the patient's tension.

[0012] Finally, a detachable external switchable illuminating lamp is arranged on the outside of the expansion assembly, and the doctor can flexibly observe the internal condition of the vagina as needed without affecting the integrity of the operation process.

[0013] To achieve the above object, the technical solution adopted by the present application to solve its technical problems is: A medical vaginal endoscope is designed, and the specific scheme is as follows: A medical vaginal endoscope, characterized in that it comprises: A handheld control assembly comprising a handheld rod and a ring-shaped base arranged at the top of the handheld rod; An expansion assembly comprising a plurality of opening rods and a flexible air bag arranged outside the opening rods, the opening rods being movably arranged on the ring-shaped base and being capable of radial expansion or contraction; A lubricating assembly arranged at the distal end of the opening rod, capable of automatically releasing lubricating liquid when the device is placed in the vagina; Wherein, the opening rod is connected with the adjusting component arranged on the handheld rod through a transmission mechanism, and the expansion degree of the opening rod is controlled by operating the adjusting component.

[0014] Further, the transmission mechanism comprises: The guide expansion disc is rotatably arranged in the annular base and is engaged with the gear; The guide expansion disc is provided with a plurality of transmission grooves, and the proximal end of the expansion rod is provided with a guide rod which cooperates with the transmission grooves; The annular base is further provided with a magnetic plate, the magnetic plate is provided with a guide groove, and the guide rod cooperates with the transmission grooves and the guide groove, so that the rotational movement of the guide expansion disc is converted into the radial linear movement of the expansion rod.

[0015] Further, the lubricating assembly comprises: The rotating plate is arranged at the distal end of the expansion rod; The lubricating liquid storage cavity is arranged inside the distal end of the expansion rod, and the top of the lubricating liquid storage cavity is provided with a lubricating liquid outlet extending to the outside of the elastic air bag; The lubricating liquid push rod is slidably connected with the lubricating liquid storage cavity at the bottom and abuts against the rotating plate at the top; When the rotating plate is pressed by the vaginal tissue, the lubricating liquid push rod is pushed to slide along the lubricating liquid storage cavity, and the lubricating liquid in the lubricating liquid storage cavity is squeezed out from the lubricating liquid outlet.

[0016] Further, the pressure limiting assembly comprises: The inflation member is arranged on the annular base and is used for inflating gas into the elastic air bag; The locking member is arranged in linkage with the inflation member; When the expansion of the elastic air bag is limited, the inflation member drives the locking member to act, so that the locking member is engaged with the guide expansion disc to limit the rotation of the guide expansion disc.

[0017] Further, the inflation member comprises: The coil is fixedly arranged inside the annular base; The magnetic plate is arranged inside the annular base and is arranged in parallel opposite to the coil; The air cylinder is arranged at the proximal end of the guide rod and is connected with the elastic air bag through the air pipe; The inflation push rod is slidably connected with the guide groove at one end and is provided with a piston and is slidably arranged in the air cylinder at the other end; When the coil is electrified, a magnetic field is generated to drive the magnetic plate to reciprocally move the inflation push rod, so that the gas in the air cylinder is compressed to deliver the gas to the elastic air bag.

[0018] Further, the magnetic plate is slidably arranged inside the annular base, and the sliding direction of the magnetic plate is a straight line path close to or away from the coil; The magnetic plate and the inner wall of the annular base are connected through the elastic reset component, so that the magnetic plate can be automatically reset after the coil is de-energized.

[0019] Further, the locking member comprises: The card plate has its middle section hinged to the annular base, with the proximal end of the card plate abutting against the magnetic plate and the distal end suspended above the guide expansion disk. When the pressure of the elastic airbag exceeds the limit, the inflation push rod pushes the magnetic plate to move, the magnetic plate drives the clamping plate to rotate, so that the far end of the clamping plate is inserted downward into the gap between the teeth of the guide expansion plate, locking the rotation of the guide expansion plate, and stopping the expansion of the expansion rod.

[0020] Furthermore, the transmission groove is an arc-shaped groove structure, and its radius of curvature matches the expansion angle of the support rod; The guide groove is a straight groove structure, and its extension direction is consistent with the radial movement direction of the support rod.

[0021] Furthermore, when the gear is rotated, it drives the guide expansion disk to rotate, and the arc-shaped groove wall of the transmission slide pushes the guide rod. Under the linear guidance constraint of the guide groove, the rotational motion of the guide expansion disk is converted into the linear expansion or contraction motion of the spreading rod along the radial direction of the annular base.

[0022] The beneficial effects of this invention are: 1. A series of evenly distributed circumferential expansion rods engage with the arc-shaped transmission grooves on the guide dilation disc, allowing all expansion rods to move synchronously radially along the annular base. This expansion method, extending outwards from the center, ensures that the expansion force is evenly distributed across the vaginal wall, avoiding localized pressure concentration that can occur with traditional instruments and effectively preventing soft tissue compression or tearing injuries. Combined with the mechanical locking function of the pressure limiting component, the transmission can be locked when internal pressure exceeds the limit, preventing over-expansion due to operational errors or individual differences, greatly improving operational safety.

[0023] 2. A stable and reliable structural support is provided by the expansion rod, ensuring a clear and sufficient field of vision. Simultaneously, the inflation of the airbag is controlled by a pressure limiting component, allowing it to expand and act as a buffer layer, closely adhering to the tissue. This not only avoids mechanical irritation and frictional damage from direct contact with hard materials, but its elastic properties also adapt to the different cavity shapes of individuals, evenly distributing pressure and significantly improving patient comfort and tolerance. Furthermore, the inflated airbag naturally blocks surrounding tissue from intruding into the field of vision, ensuring a clean and clear examination area.

[0024] 3. This invention integrates the lubrication function into the main structure. Based on the principle of contact pressure sensing, the lubrication component can release lubricant in real time and on demand during insertion, intelligently reducing frictional resistance, making the insertion process smoother, and alleviating patient discomfort. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the structure of the present invention in its expanded state; Figure 2The schematic diagram of the front view of the present application in the expanded state; Figure 3 The schematic diagram of the front view of the present application in the expanded state; Figure 2 The schematic diagram of the section structure along A-A direction; Figure 4 The schematic diagram of the front view of the present application in the expanded state; Figure 3 The enlarged view of part A; Figure 5 The enlarged view of part A; Figure 3 The enlarged view of part B; Figure 6 The schematic diagram of the support rod structure; Figure 7 The schematic diagram of the structure in the expanded state without the elastic air bag; Figure 8 The schematic diagram of the front view of the present application in the expanded state; Figure 7 The schematic diagram of the section structure along A-A direction; Figure 9 The schematic diagram of the magnetic plate structure; Figure 10 The schematic diagram of the magnetic plate test structure; Figure 11 The schematic diagram of the front view of the present application in the expanded state; Figure 12 The schematic diagram of the front view of the present application in the expanded state; Figure 13 The schematic diagram of the front view of the present application in the expanded state without the elastic air bag.

[0026] The above-mentioned drawings include the following drawing marks: 10, hand-held rod; 11, annular base; 101, adjusting knob; 102, gear one; 110, guiding expansion disc; 111, transmission sliding groove; 112, guide groove; 2, support rod; 20, air pipe; 21, guide rod; 3, elastic air bag; 40, coil; 41, magnetic plate; 42, inflation push rod; 5, clamping plate; 60, rotating plate; 61, lubricating liquid push rod; 62, reset spring; 63, lubricating liquid storage cavity; 64, lubricating liquid outlet; 7, illuminating lamp; 71, connecting belt. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments will be described clearly and completely below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments, not all the embodiments.

[0028] In the description of the present application, it should be understood that the terms "front", "back", "left", "right", "up", "down", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0029] Reference Figures 1-13 The present application provides a medical vaginal endoscope, comprising a handheld control assembly, a dilatation adjustment assembly, a pressure limiting assembly, a lubricating assembly and an illumination assembly.

[0030] In specific implementation, the handheld control assembly is integrally formed by the bottom handheld rod 10 and the annular base 11 arranged at the top of the handheld rod 10, and the two are stably connected through an integrated forming process to form a coherent and force-balanced operation base, which provides a stable installation carrier for the subsequent dilatation adjustment, pressure sensing and other functional assemblies.

[0031] The handheld rod 10 is in a long strip shape and has a hollow structure, which provides accommodation space for the gear transmission mechanism and related electrical control elements. The outer contour of the handheld rod 10 follows the principle of ergonomics, and the surface thereof is smoothly processed, shallow arc-shaped grooves that are adapted to the natural bending arc of the fingers are arranged in the gripping area, which improves the comfort and controllability during operation.

[0032] At the top position of the handheld rod 10, an adjustment knob 101 is arranged, and the outer surface of the adjustment knob 101 is designed with anti-slip texture. The central axis of the adjustment knob 101 is perpendicular to the axial direction of the handheld rod 10 and is fixedly connected with a gear one 102 inside the handheld rod 10. The gear one 102 is vertically installed inside the handheld rod 10 near the top, and the gear teeth thereof face the top of the handheld rod 10, and the gear teeth are engaged with a guide dilatation disc 110 sleeved on the annular base 11.

[0033] The annular base 11 is annular in structure and is arranged through the top of the handheld rod 10. The guide expansion disc 110 is concentrically arranged on the inner side of the annular base 11, is provided with a plurality of protruding teeth along the circumferential edge thereof, and is rotationally connected to the inner wall of the annular base 11 through a bearing. On the guide expansion disc 110, a plurality of transmission sliding grooves 111 are uniformly distributed in the circumferential direction. The transmission sliding grooves 111 are designed in an arc shape, and the depth and width of the groove body are adapted to the size of the end of the dilating rod 2 connected subsequently, so that the end of the dilating rod 2 can be embedded in the groove and smoothly slide along the groove track. The curvature radius of the transmission sliding groove 111 matches the preset expansion angle of the device. When the guide expansion disc 110 is driven to rotate by the gear one 102, the transmission sliding groove 111 can stably convert the circular motion into radial expansion or contraction motion of the dilating rod 2 through cooperation with the dilating rod 2, and the trajectories of all transmission sliding grooves 111 remain highly consistent, ensuring the synchronism of the motion of the plurality of dilating rods 2 and fundamentally avoiding the problem of uneven local expansion.

[0034] The magnetic plate 41 is movably arranged in the annular base 11 and is provided with a plurality of guide grooves 112 on the surface in the circumferential direction. The guide grooves 112 are straight slot structures, and the extension direction thereof is consistent with the radial motion direction of the dilating rod 2. The guide grooves 112 form a corresponding cooperation relationship with the transmission sliding grooves 111. The end of the dilating rod 2 is provided with a guide rod 21. The proximal end of the guide rod 21 abuts against the transmission sliding groove 111, and the distal end is clamped with the guide groove 112 through the inflation push rod 42. Through the double cooperation of the guide rod 21 with the transmission sliding groove 111 and the guide groove 112, the radial expansion or contraction motion of the dilating rod 2 relative to the annular base 11 is realized. This double guide structure further constrains the motion track of the dilating rod 2, ensuring that it can only move linearly in the radial direction.

[0035] When the medical staff rotates the adjusting knob 101, the adjusting knob 101 drives the central shaft to rotate synchronously, thereby driving the gear one 102 to rotate. The gear one 102 drives the guide expansion disc 110 to rotate in the annular base 11 through the meshing action of the gear teeth. When the guide expansion disc 110 rotates, the transmission sliding grooves 111 thereon also move in a circular motion. Since the transmission sliding grooves 111 are arc structures, under the limiting action of the guide grooves 21 on the magnetic plate 41, the dilating rod 2 cannot move in a circular motion with the guide expansion disc 110, but can only slide outward or inward along the arc track of the transmission sliding grooves 111, thereby realizing the expansion or contraction of the device. The entire transmission process is completed completely relying on the cooperation of mechanical gears and sliding grooves, without the need for an additional power source, which simplifies the overall structure and reduces potential faults. The medical staff can control the expansion degree of the dilating rod 2 by controlling the rotation direction and angle of the adjusting knob 101, flexibly adapt to the characteristics of the vaginal cavity of different patients and the clinical operation requirements, and greatly improve the controllability and adaptability of the operation.

[0036] The expansion adjustment assembly is composed of the expansion rod 2 and the elastic air bag 3.

[0037] The expansion rod 2 is L-shaped, and the short side part of the vertical end is provided with a guide rod 21 which is connected with the guide expansion disc 110 to provide power support for the expansion action. The length of the horizontal end as the part directly participating in the expansion can fully meet the space required for vaginal examination and treatment in the maximum expansion state. The number of the expansion rod 2 is set to be several, and is uniformly distributed along the circumference of the annular base 11. This layout enables the expansion force to act uniformly on the vaginal wall, prevents tissue damage caused by local pressure concentration, and further fits the natural form of the vagina.

[0038] The elastic air bag 3 is integrally sleeved on the outside of all the expansion rods 2, and the contour of the elastic air bag 3 is matched with the outer contour of the expansion rod 2 group. The proximal end of the elastic air bag 3 is sealingly connected with the end of the annular base 11 to ensure the air tightness inside the air bag. The gas pipe 20 is arranged inside the proximal end of the expansion rod 2, and the running direction of the gas pipe 20 is consistent with the extension direction of the expansion rod 2 to provide a path for gas transmission. A gas hole is formed in the distal end of the gas pipe 20 and communicates with the elastic air bag 3, so that the gas in the gas pipe 20 can smoothly enter the inside of the elastic air bag 3 to complete the inflation action.

[0039] In specific implementation, the inflation process of the elastic air bag 3 is controlled by the pressure limiting assembly arranged in the annular base 11. When expansion is needed, the pressure limiting assembly delivers gas to the elastic air bag 3 through the gas pipe 20 inside the expansion rod 2, so that the air bag gradually expands and adheres to the vaginal wall. By using the elastic property of the air bag, a buffer layer is formed between the expansion rod 2 and the vaginal tissue, which not only avoids friction damage caused by direct contact of hard materials, but also blocks the surrounding fat tissue from entering the field of view through the natural extension of the air bag, ensuring the clarity and visibility of the examination area.

[0040] In addition, a lubricating assembly is arranged at the distal end of the expansion rod 2, which is integrated with the end structure of the expansion rod 2 and can automatically release lubricating liquid according to the contact pressure during the placement of the device, thereby reducing the placement resistance. The expansion adjustment part not only realizes the expansion function, but also considers the smoothness of placement, further improving the safety of the overall operation and the acceptance of the patient.

[0041] In specific implementation, the pressure limiting assembly is composed of an inflation member and a locking member, which work cooperatively through the linkage of gas flow pressure and mechanical transmission, and is responsible for the inflation control of the elastic air bag 3 and can timely lock the guide expansion disc 110 when the pressure exceeds the standard, thereby fundamentally avoiding the risk of over-expansion.

[0042] The inflator is integrated inside the annular base 11, including a coil 40, a magnetic plate 41, an inflator push rod 42 and a one-way valve. The coil 40 is fixedly installed inside the annular base 11 near the guide expansion disc 110, with its axis direction parallel to the magnetic plate 41, to ensure that the magnetic field force can efficiently act on the magnetic plate 41.

[0043] The magnetic plate 41 is in a ring structure and is arranged in parallel with the coil 40, with its side elastically connected to the inner wall of the annular base 11 through a spring and slidably connected to the proximal end of the inflator push rod 42 through a guide groove 112, so that the displacement of the magnetic plate 41 can directly drive the synchronous movement of the inflator push rod 42.

[0044] The distal end of the inflator push rod 42 is a movable end, which is slidably fitted inside the guide rod 21, with a piston arranged at the end to match a cylinder arranged inside the guide rod 21, to ensure the air tightness during sliding; the proximal end is a sliding end, which is embedded in the guide groove 112 on the magnetic plate 41 and forms a sliding joint, so that the inflator push rod 42 can stably move horizontally with the reciprocating movement of the magnetic plate 41, and at the same time, when the guide expansion disc 110 rotates, the sliding track of the distraction rod 2 can be constrained through the guide rod 21. When it is necessary to inflate the elastic air bag 3, the coil 40 is connected to the current, and the current passes through the coil 40 to generate a magnetic field with the same polarity as the magnetic plate 41. Under the action of the magnetic field repulsion, the magnetic plate 41 overcomes the pulling force of the spring and moves away from the coil 40, thereby driving the movable end of the inflator push rod 42 to slide outward along the guide rod 21, and external gas enters the cylinder; after the coil 40 is disconnected, the magnetic field repulsion disappears, and the elastic force of the spring pulls the magnetic plate 41 back to its original position, and the movable end of the inflator push rod 42 is pushed into the guide rod 21, the gas in the cylinder is compressed and delivered to the inside of the elastic air bag 3 through the air hole of the distraction rod 2. In this way, the inflator push rod 42 makes reciprocating piston movement under the action of the magnetic plate 41 and the spring, continuously delivering gas to the elastic air bag 3, until the elastic air bag 3 reaches the preset initial inflation state, providing flexible support for subsequent expansion operations.

[0045] The locking member, as part of the pressure limiting assembly, is mechanically locked and is composed of a clamping plate 5, a rotating shaft and a torsional spring. The clamping plate 5 is rotatably connected to the protruding structure on the inner wall of the annular base 11 through the rotating shaft, and the connecting point of the rotating shaft and the clamping plate 5 is located at the lower middle part of the clamping plate 5, so that the clamping plate 5 can flexibly rotate around the rotating shaft; at the same time, the torsional spring is sleeved outside the rotating shaft, with one end connected to the side wall of the clamping plate 5 and the other end fixed to the inner wall of the annular base 11, to provide a reset elastic force for the clamping plate 5, to ensure that the clamping plate 5 always maintains the initial position separated from the gear teeth of the guide expansion disc 110 in the non-triggered locking state.

[0046] The overall shape of the clamping plate 5 is long strip-shaped, and the end of one end is designed as a tooth-shaped structure matched with the gear teeth of the guide expansion disc 110, which can accurately fit into the gear tooth gap to form a rigid clamping when the locking action is triggered. The other end is a smooth arc-shaped contact surface corresponding to the edge of the magnetic plate 41, and the extension trajectory of the end is just covered the movement path of the magnetic plate 41, ensuring that the magnetic plate 41 can form effective contact with the clamping plate 5 when moving away from the coil 40. That is, every time the magnetic plate 41 moves away from the coil 40, the clamping plate 5 will be clamped into the guide expansion disc 110, preventing the magnetic plate 41 from sliding too far and preventing the inflation from being too large. In addition, it also prevents the expansion or retraction of the expansion rod 2 caused by accidental touch during the inflation operation. A notch of a specific shape is provided at the edge of the magnetic plate 41, and the depth and width of the notch are designed to match. When the magnetic plate 41 moves to the limit position, the edge of the notch can be fitted with the arc-shaped contact surface of the clamping plate 5, and the clamping plate 5 is driven to rotate by the thrust.

[0047] When the elastic air bag 3 is excessively pressed by the vaginal wall, the internal pressure rises and exceeds the preset threshold value, the gas in the air bag flows reversely through the air pipe 20, pushes the movable end of the inflation push rod 42 to move away from the elastic air bag 3, and then drives the magnetic plate 41 to move away from the coil 40 against the pulling force of the spring. With the continuous movement of the magnetic plate 41, the edge gradually approaches the arc-shaped contact surface of the clamping plate 5, and when the magnetic plate 41 reaches the limit position, the notch at the edge is aligned with the end of the clamping plate 5, and the inner edge of the notch generates a thrust in the rotation direction on the clamping plate 5. Under the action of the thrust, the clamping plate 5 rotates around the rotating shaft and compresses the torsion spring, and one end of the tooth-shaped structure of the clamping plate 5 deflects towards the gear teeth of the guide expansion disc 110, and finally accurately fits into the gear tooth gap of the guide expansion disc 110 to form a mechanical lock.

[0048] At this time, the guide expansion disc 110 cannot continue to rotate because it is clamped by the clamping plate 5, the meshing transmission link between the guide expansion disc 110 and the gear wheel 102 is cut off, the rotation of the adjusting knob 101 cannot be transmitted to the expansion rod 2, and the expansion action of the expansion rod 2 is immediately terminated. The elastic air bag 3 no longer continues to expand, thereby avoiding tissue damage caused by excessive pressure on the vaginal wall.

[0049] When it is necessary to release the locked state, the coil 40 is energized, so that the coil 40 and the magnetic plate 41 are magnetically opposite and attracted to each other. The magnetic plate 41 is reset under the action of the magnetic field attraction and is separated from the contact with the clamping plate 5. The clamping plate 5 reversely rotates around the rotating shaft under the action of the elastic force of the torsion spring, and the tooth-shaped structure of the clamping plate 5 exits from the gear tooth gap of the guide expansion disc 110. The locked state is released, the guide expansion disc 110 restores the rotating function, and the expansion rod 2 can be retracted with the operation of the adjusting knob 101.

[0050] In specific implementation, the lubricating assembly is mainly composed of a silica gel transfer plate 60, a lubricating liquid push rod 61, a reset spring 62, a lubricating liquid storage cavity 63 and a lubricating liquid outlet 64. The components are sequentially assembled in the internal cavity of the distal end of the dilating rod 2 according to the function logic, forming a closed and pressure-responsive lubricating system.

[0051] The silica gel transfer plate 60, as a component directly contacting the vaginal tissue, is designed in an arc shape and is attached to the distal end of the dilating rod 2. The edge of the silica gel transfer plate 60 forms a smooth transition with the outer wall of the dilating rod 2, avoiding additional friction caused by structural protrusions. The inner side of the silica gel transfer plate 60 is in sliding abutment with the top end of the lubricating liquid push rod 61. This connection not only ensures effective force transmission but also buffers the contact pressure by utilizing the elastic properties of the silica gel material, preventing damage to the tissue caused by rigid impact.

[0052] The lubricating liquid push rod 61 is in a rod shape and has a hollow structure for perfusing lubricating liquid. The axis of the lubricating liquid push rod 61 is perpendicular to the extension direction of the dilating rod 2. The bottom of the lubricating liquid push rod 61 passes through the top opening of the lubricating liquid storage cavity 63. The lubricating liquid storage cavity 63 is in a hollow cavity shape. The inside of the cavity is used to store sterile lubricating liquid. A sealing element is arranged between the top of the cavity and the outer wall of the lubricating liquid push rod 61, ensuring that the lubricating liquid does not leak from the gap. The side wall of the cavity is provided with a lubricating liquid outlet 64, which extends to the outside of the elastic air bag 3, so that the lubricating liquid can flow to the outside of the elastic air bag 3. The reset spring 62 is sleeved on the top lower end of the lubricating liquid push rod 61 and is fixed to the top of the dilating rod 2 at the other end. In the normal state, the reset spring 62 is in a natural stretched state, pushing the lubricating liquid push rod 61 upward, so that the silica gel transfer plate 60 maintains the initial position of being flush with the end of the dilating rod 2.

[0053] When the device starts to be placed in the vagina, the vaginal tissue generates contact pressure on the silica gel transfer plate 60. This pressure pushes the silica gel transfer plate 60 to shrink into the dilating rod 2, thereby driving the lubricating liquid push rod 61 to move downward along the axial direction. In the process of the push rod moving downward, the reset spring 62 is compressed and accumulates elastic force, and at the same time, the top end of the push rod extrudes the lubricating liquid in the lubricating liquid storage cavity 63, forcing the lubricating liquid to enter the internal passage through the flow guide hole and finally to be extruded out of the lubricating liquid outlet 64 to the outer wall of the elastic air bag 3. Since the lubricating liquid outlet 64 is uniformly distributed along the circumference of the dilating rod 2 and the outlet direction is inclined to the distal end, the extruded lubricating liquid can form a uniform lubricating film on the outer wall of the device, effectively reducing the frictional resistance in the placement process.

[0054] The extrusion amount of the lubricating liquid is positively correlated with the pressure of the vaginal tissue on the silica gel transfer plate 60: when the patient's vaginal muscles contract due to tension, the tissue pressure increases, the contraction amount of the silica gel transfer plate 60 increases, the downward movement range of the lubricating liquid push rod 61 increases, and the extruded lubricating liquid increases, thereby offsetting the increase in resistance by enhancing the lubricating effect; when the placement process is smooth and the pressure is small, the extrusion amount of the lubricating liquid decreases accordingly, avoiding excessive lubricating liquid from causing blurred vision or inconvenience in operation.

[0055] In addition, the distal end of the dilating rod 2 is rounded as a whole, and the edges are polished to be smooth and free of edges, and the silicone rotating plate 60 of the lubricating assembly cooperates to form a soft front end for placement. When the lubricating liquid is extruded from the outlet, a lubricating interface is quickly formed between the rounded end and the vaginal tissue, further reducing the irritation caused by mechanical contact, and making the entire placement process more ergonomic.

[0056] When the device is completed and removed from the vagina, the pressure of the vaginal tissue on the silicone rotating plate 60 disappears, the accumulated elastic force of the reset spring 62 is released, the lubricating liquid push rod 61 is pushed upward to reset, and the silicone rotating plate 60 returns to the initial position.

[0057] In specific implementation, an illumination member is arranged outside the annular base 11 to assist in exploration, and the illumination member is a detachable structure including an illumination lamp 7 and a connecting belt 71. The illumination lamp 7 is detachably connected to the outer side wall of the annular base 11 through the connecting belt 71, and a control button is arranged on the connecting belt 71 to turn on or off the illumination lamp. The above is the structure of the existing LED lamp. When medical personnel need to better observe the internal situation of the vagina, the illumination lamp is adjusted to a suitable angle by pulling the connecting belt 71, and the control button is pressed to turn on the illumination lamp. Light can directly irradiate into the vagina, providing sufficient light source for examination or treatment operation, and ensuring that the operation can be clearly and accurately performed. When illumination is not needed, the control button is turned off, and the illumination lamp is placed aside, which does not affect the performance of other operation processes. This design not only ensures the illumination effect, but also embodies the flexibility of operation.

[0058] In use, an appropriate amount of gas is filled into the air bag through the inflator of the pressure limiting assembly. The device is placed into the vagina with the handheld rod 10, and the vaginal tissue compresses the silicone rotating plate 60 during the process, and the lubricating assembly automatically releases the lubricating liquid. After the sleeve film end completely enters, the adjusting knob 101 is rotated to expand the dilating rod 2 radially through gear transmission, and the elastic air bag 3 expands to adhere to the vaginal wall. When the air bag is pressed beyond the threshold value, the locking member triggers the locking guide expansion disc 110 to prevent overexpansion. If illumination is needed, the connecting belt 71 is pulled to turn on the illumination lamp 7. After the operation is completed, the adjusting knob 101 is reversely rotated to release the locking, the dilating rod 2 is retracted, the device is removed, the air bag is removed, the end is disinfected, and the lubricating liquid is supplemented for next use.

[0059] The above only describes the preferred embodiments of the present application and is not used to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A medical vaginal speculum, characterized in that, include: The handheld control assembly includes a handheld lever (10) and an annular base (11) disposed on the top of the handheld lever (10). The expansion assembly includes multiple expansion rods (2) and an elastic airbag (3) sleeved on the outside of the expansion rods (2). The expansion rods (2) are movably mounted on the annular base (11) and can expand or contract radially. A lubrication component, located at the distal end of the spreading rod (2), is capable of automatically releasing lubricant when the device is inserted into the vagina; The expansion rod (2) is connected to the adjustment component on the hand handle (10) through the transmission mechanism, and the expansion degree of the expansion rod (2) is controlled by operating the adjustment component.

2. The medical vaginal speculum according to claim 1, characterized in that, The transmission mechanism includes: The guide expansion disk (110) is rotatably disposed within the annular base (11), and the guide expansion disk (110) is connected to the adjustment component; The guide expansion plate (110) is provided with multiple transmission grooves (111), and the proximal end of the support rod (2) is provided with a guide rod (21), which cooperates with the transmission groove (111); The annular base (11) is also provided with a magnetic plate (41), and the magnetic plate (41) is provided with a guide groove (112). The guide rod (21) cooperates with the transmission slide (111) and the guide groove (112) to convert the rotational motion of the guide expansion disk (110) into the radial linear motion of the spreading rod (2).

3. A medical vaginal speculum according to claim 2, characterized in that, The lubrication components include: A rotating plate (60) is located at the far end of the support rod (2); The lubricant storage chamber (63) is located inside the distal end of the support rod (2), and its top is provided with a lubricant outlet (64) extending to the outside of the elastic airbag (3). The bottom of the lubricating fluid push rod (61) is slidably connected to the lubricating fluid storage cavity (63), and the top abuts against the rotating plate (60); When the rotating plate (60) is compressed by vaginal tissue, it pushes the lubricant push rod (61) to slide along the lubricant storage cavity (63), squeezing the lubricant in the lubricant storage cavity (63) outward from the lubricant outlet (64).

4. A medical vaginal speculum according to claim 1, characterized in that, It also includes a pressure limiting component, which includes: An inflatable component is provided on an annular base (11) for inflating gas into the elastic airbag (3); The locking mechanism is linked to the inflation mechanism. When the expansion of the elastic airbag (3) is restricted, the inflator drives the locking member to engage with the guide expansion disc (110) to restrict the rotation of the guide expansion disc (110).

5. A medical vaginal speculum according to claim 4, characterized in that, The inflatable components include: The coil (40) is fixedly installed inside the annular base (11); A magnetic plate (41) is disposed inside the annular base (11) and is arranged parallel to and opposite to the coil (40); The cylinder is located near the guide rod (21) and is connected to the elastic airbag (3) via the air tube (20); The inflation push rod (42) has one end slidably connected to the guide groove (112), and the other end is provided with a piston and slidably disposed in the cylinder; When the coil (40) is energized, it generates a magnetic field, which drives the magnetic plate (41) to move the inflation push rod (42) back and forth, compressing the gas in the cylinder and delivering the gas to the elastic air bag (3).

6. A medical vaginal speculum according to claim 5, characterized in that, The magnetic plate (41) is slidably disposed inside the annular base (11), and its sliding direction is a straight path toward or away from the coil (40); The magnetic plate (41) is connected to the inner wall of the annular base (11) by an elastic reset component, so that the magnetic plate (41) can automatically reset after the coil (40) is de-energized.

7. A medical vaginal speculum according to claim 5, characterized in that, The locking components include: The middle section of the card plate (5) is hinged to the annular base (11), the proximal end of the card plate (5) abuts against the magnetic plate (41), and the distal end is suspended above the guide expansion disk (110); When the pressure of the elastic airbag (3) exceeds the limit, the inflation push rod (42) pushes the magnetic plate (41) to move, the magnetic plate (41) drives the clamping plate (5) to rotate, so that the far end of the clamping plate (5) is inserted into the tooth gap of the guide expansion disk (110) to lock the rotation of the guide expansion disk (110), and the expansion of the spreading rod (2) stops.

8. A medical vaginal speculum according to claim 2, characterized in that, The transmission groove (111) is an arc-shaped groove structure, and its radius of curvature matches the expansion angle of the support rod (2); The guide groove (112) is a straight groove structure, and its extension direction is consistent with the radial movement direction of the support rod (2).

9. A medical vaginal speculum according to claim 8, characterized in that, When the gear 1 (102) is rotated, the guide expansion disk (110) is driven to rotate. The arc-shaped groove wall of the transmission slide (111) pushes the guide rod (21). Under the linear guidance constraint of the guide groove (112), the rotational motion of the guide expansion disk (110) is converted into the linear expansion or contraction motion of the spreading rod (2) along the radial direction of the annular base (11).

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