Self-destructing four-wing speculum

Abstract

The present invention provides a self-destructive four-wing speculum, comprising an upper expansion piece, a lower expansion piece, at least one side expansion piece and a positioning sleeve, wherein the upper expansion piece and the lower expansion piece are rotatably connected and positioned by an expansion positioning device, and the positioning sleeve is rotatably connected to the upper expansion piece and the side expansion piece respectively, and is characterized in that it also comprises a first expansion positioning device composed of a hook expansion positioning self-destructive device, and a second expansion positioning device is formed by a second positioning hook with a second handle on the side expansion piece and a second positioning buckle above the two ends of the positioning sleeve. The present invention has a simple structure, is easy to operate, is easy to manufacture, is economical and practical, and is safe and effective to use.

Description

Technical Field

[0001] The invention relates to a vaginal dilator of gynecological and obstetric medical equipment, in particular to a self-destructive four-wing speculum. Background Art

[0002] Vaginal dilator, also known as vaginal speculum, speculum, etc., is a commonly used gynecological examination and surgical instrument. It is used to expose the examination site or surgical site. Through domestic and foreign literature retrieval, the U.S. Patent Office recorded the spiral fixed structure vaginal dilator invented by American John L. Marco in 1949. A double-wing vaginal dilator inspection type has at least 12 parts, and a surgical type has at least 8 parts. The advantage is that the upper and lower wings open at an angle greater than 40 degrees during expansion, which can effectively expand the vagina, expose the cervix and posterior fornix, and facilitate inspection and surgery. However, its defects are that there are many parts, the operation is cumbersome and time-consuming, the cost is high, and it is not suitable for disposable production. According to the records of the Chinese Patent Office, the "Vaginal Dilator" (the abbreviation of the double-wing vaginal dilator) invented by Lin Jing of Wenzhou Medical University in China in 1989 has only two parts to form a vaginal dilator, whether it is an inspection type or a surgical type, and it has all the above advantages of the American invention in terms of function, and has the advantages of fewer parts, convenient operation, fast speed, low cost, and being particularly suitable for disposable production.

[0003] The double-wing vaginal dilator includes an upper wing and a lower wing that can be opened and closed in a duckbill shape. The upper and lower wings are kept open at a certain angle by the positioning device on the dilator. The doctor observes, examines and performs surgery through the field of view of the upper and lower wings. With the emergence and increase of some new diseases in clinical practice, and encountering some patients with particularly obese and loose vaginas, as well as some patients who need cervical surgery, that is, ultra-high frequency radiofrequency knife (also known as LEEP knife) surgery, when the double-wing vaginal dilator with only upper and lower wings is used, when the upper and lower wings are opened, the vaginal wall between the upper and lower wings will be backfilled into the opened area, thereby reducing the exposure range and bringing difficulties to inspection or surgery. If the opening height of the upper and lower wings is increased, in addition to causing pain to the patient, the backfill will also increase, so this is not a good countermeasure. On the other hand, in the field of obstetrics and gynecology, due to the increasing number of cervical cancer patients in recent years, the use of ultra-high frequency radiofrequency knife will produce harmful smoke with a stinging throat and a burnt smell during surgery, affecting the health of doctors and patients. Therefore, a vaginal dilator with a smoke exhaust device is needed clinically.

[0004] Furthermore, with the continuous advancement of technology, more and more electronic products are used in medical devices, and vaginal dilators are also required to have functions such as lighting and video.

[0005] For example, U.S. Patent Number: 6,024,696 discloses a "sidewall supported speculum", i.e., a four-wing vaginal dilator, which has more than 20 parts, a complex structure, cumbersome and laborious operation, and a high cost. A four-wing speculum supported by a sidewall includes an upper expansion piece including an upper wing, a push handle and an upper grip, the upper grip is connected to the upper wing by a pin, the upper wing is also provided with a smoke exhaust setting device for placing a smoke exhaust pipe, and a lower expansion piece including a lower wing and a second grip, the grip and the second grip are fixed with screws and nuts, left and right expansion pieces are provided between the upper and lower wings, the rear parts of the left and right expansion pieces extend to the left and right to form a small wing for the left and right, and pins extend forward and backward on the small wings, the pins pass through the front and rear positioning grooves provided at the rear end of the lower wing, and there are also left and right mounting screw holes above the grip for installing spring pressing pieces to buckle the rear axons of the left and right expansion pieces to maintain the position of the left and right expansion pieces when they are upright. The defect is that such a complex structure cannot make the left and right expansion pieces expand outward, nor can it make the left and right expansion pieces retract inward! The only way for the left and right dilators to support the side wall of the vagina is to "lie down" or "stand upright". This will inevitably lead to a small surgical space, insufficient surgical field, and lack of practical value.

[0006] In addition, International Application PCT / AU98 / 00737 discloses a "spectacle", which proposes a solution as follows: a speculum includes a main body, which has two spreading fingers 14A, 14B whose proximal ends are connected to the main body, another spreading finger 28 extends between the above fingers and is fixed to the main body, an actuator is pivotally connected to the main body, the actuator is formed with a spreading finger 70 located between the fingers 14A, 14B and opposite to the fixed finger 28, when the actuator is pivoted, the finger immediately begins to rotate away from the remaining fingers, after the actuator rotates a certain angle, it begins to contact the inside of the fingers 14 near their proximal ends, so that the distal ends of those fingers move away from each other, the fingers 14A, 14B are hinged around the inclined hinge axis, so that when the actuator abuts them, they move in a combined upward and sideward motion. Its disadvantages are also that the structure is too complicated, there are too many parts, it is difficult to operate, and the side spreading pieces are arranged outside the upper and lower wings and cannot be retracted into the upper and lower wings, so it will cause pain to the patient when entering the vagina.

[0007] In 2010, China's State Intellectual Property Office recorded the "Vaginal Dilator with Double Wings" invented by my country's Lin Jing and Zhang Xingxing's research team. The Chinese invention patent authorization number is ZL201010227014.9. It is the first domestic and foreign invention to propose and solve the problem that the upper, lower, left and right wings of the dilator can expand outwards and fold inwards, and the left and right wings can be folded into the upper and lower wings. This excellent and very practical structure is the first invention of our China. The four-wing speculum invented by inventors in other countries in the world cannot expand outwards or fold inwards. For example, the four-wing speculum invented by Americans Patent Number: 6,024,696, its left and right wings can only be "erect" and "lying down", but cannot expand outwards or fold inwards! The four-wing speculum invented by us in China is not only simple in structure and easy to operate, especially the upper and lower expansion pieces can be effectively expanded to the required position toward the upper and lower walls of the vagina according to the size of clinical needs, and the left and right expansion pieces can also be effectively expanded to the required position toward the side walls of the vagina according to the size of clinical needs. After the examination or operation is completed, the left and right expansion pieces can be retracted inward between the upper and lower wings, and the upper and lower wings are also retracted and closed. The four-wing speculum can be inserted into and removed from the vagina just like a double-wing speculum with only upper and lower wings. It is both safe and effective to use.

[0008] Moreover, the above-mentioned four-wing speculum invented by Americans has as many as 20 parts, which is cumbersome and heavy, inconvenient to operate, expensive, and has many defects. The four-wing speculum invented by us Chinese, namely the above-mentioned "Vaginal Dilator with Double Side Wings", has only 4 parts in total (including upper dilator, lower dilator, positioning sleeve and side dilator), with fewer parts, simple operation, economical and practical, and its functions far exceed those of the four-wing speculum invented by Americans.

[0009] In 2010, China's State Intellectual Property Office recorded the "Vaginal Dilator with Upper and Lower Wings with Attached Wings" first invented by Zhang Xingxing, Lin Jing and others in my country. The Chinese invention patent authorization number is ZL201010227012.X. It was the first in China and abroad to propose and solve the problem of setting upper and lower attached wings on the inner surface of the upper and lower wings, which solved the problem of quickly removing toxic smoke from the area closest to the operation during LEEP surgery, aiming to protect the health of medical staff and patients and eliminate pollution in the operating room, and can also realize functions such as lighting and video at the same time.

[0010] We have also applied for international patents in the United States, Europe and other countries for the above two inventions, and have been authorized by the United States Patent Office with patent number US 8,876,711B2EP and the European Patent Office with patent number EP 2586 486B1.

[0011] However, a common defect of the above inventions at home and abroad so far is that there is only one handle (or pipe joint) but no second handle at the rear end of the left and right expansion plates. The pipe joint actually becomes the handle for controlling the operation of the left and right expansion plates. In clinical operation, it is found that the second positioning hook cannot be tilted up by the pipe joint or the pipe joint alone, so it is difficult to enter the second positioning buckle. Even if the second positioning hook is forced to enter the second positioning buckle, it is difficult to make the second positioning hook easily disengage from the positioning buckle and lose its practical value. The present invention adds a second handle above the second positioning hook, and the result is completely different. The doctor can make the second positioning hook tilt up and easily disengage from or enter the second positioning buckle by kneading the pipe joint and the second handle, and it is easy to operate and adjust freely. This is a fundamental change and improvement to the original defects of the known technology and has substantial significance, thus having practicality.

[0012] In addition, the side expansion piece insert in the known technology is a solid structure, which is quite inconvenient to install and rotate. Now, the insert is designed to be a second axis pin structure and is elastic, so it can be easily and quickly installed in the sleeve, and the edge parts on both sides of the front end of the sleeve are made into inverted buckles, which can effectively prevent the second axis pin from slipping when used, and it is easy, convenient and practical to rotate during clinical use.

[0013] Another defect of the known technology is that the second positioning buckle is set on the positioning seat. As a result of this setting, when the left and right wings are expanded to the maximum, the spacing between the left and right wings is 58mm. The present invention sets the position of the second positioning buckle on the positioning sleeve, so that when the left and right wings are expanded to the maximum, the spacing between the left and right wings is >88mm, which is 1.52 times larger than that of the known technology. This is of great clinical significance, greatly increases the surgical field and surgical space, and can meet the surgical needs of patients with other cervical diseases such as ultra-high frequency radiofrequency knife (LEEP knife) surgery, achieving a fundamental improvement and proving that it has significant technical effects.

[0014] On the other hand, there are media reports that lawless elements recycle and reuse them. For this reason, Mr. Lin Jing and Mr. Zhang Xingxing of my country first invented the "Self-destructive Disposable Sterile Vaginal Dilator" in 2004 (the patent name is Instant-destructive Painless and Noiseless Disposable Vaginal Dilator, and the patent authorization number is 200420116743.7). The principle is to set an "instant-destruct belt" on the non-stress-bearing part of the dilator handle or the handle. After use, the "instant-destruct belt" is broken to achieve destruction and achieve the purpose of preventing reuse. However, in actual applications, if the "instant-destruct belt" is too deep, it is easy to break during transportation, and if the "instant-destruct belt" is too shallow, it is difficult to break. Therefore, further research on vaginal dilators is needed to overcome the defects and make them better and more perfect. Summary of the invention

[0015] The object of the present invention is to provide a self-destructive four-wing speculum which can overcome the defects of the prior art.

[0016] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides a self-destructive four-wing speculum, including an upper expansion piece, a lower expansion piece, at least one side expansion piece and a positioning sleeve, wherein the upper expansion piece and the lower expansion piece are rotatably connected and positioned by an expansion positioning device, and the positioning sleeve is rotatably connected to the upper expansion piece and the side expansion piece respectively, and also includes a first expansion positioning device composed of a hook expansion positioning self-destructive device, and a second positioning hook with a second handle on the side expansion piece is engaged with a second positioning buckle above the two ends of the positioning sleeve to form a second expansion positioning device.

[0017] In a preferred example, one end of the second positioning hook is fixedly connected to the side expansion piece, and the other end is a free end, and the second handle is arranged at the free end.

[0018] In another preferred embodiment, the side expansion piece is a solid structure, and its rear end is a first handle. In front of the first handle, there are a second radially inward positioning hook and a second handle, a second axle pin and a side wing extending upward integrally with the second positioning hook.

[0019] In another preferred embodiment, the first handle or pipe joint and the second handle are pinched toward each other to drive the free end of the second positioning hook of the side expansion plate to bend upward and move above the second positioning buckle, so that the inner diameter spacing of the left and right wings opened horizontally outward reaches >88mm and are retracted inward between the upper and lower wings.

[0020] In another preferred embodiment, the side expansion piece is a hollow structure with a channel, and its rear end is a pipe joint. In front of the pipe joint, there are a second radially inward positioning hook and a second handle, a second axle pin and side wings extending upward integrally with the second positioning hook.

[0021] In another preferred embodiment, the side expansion piece of the hollow structure is a channel composed of a channel body and a channel cover thereon, a positioning convex is provided on the inner side of the front end of the channel cover to enable the channel cover to be quickly and accurately installed on the main body positioning recess, and there is at least one channel opening at the front end of the channel.

[0022] In another preferred embodiment, the first handle or pipe joint and the second handle are pinched toward each other to make the second positioning hook tilt upward, move and fix on the second positioning buckle, so that the left and right wings can be opened horizontally outward and folded inward between the upper and lower wings.

[0023] In another preferred embodiment, the positioning sleeve has a protrusion disposed in the middle of its outer side, and the upper and lower positions of the positioning sleeve and the side wings can be adjusted by moving the protrusion upward or downward.

[0024] In another preferred example, second axial pins are provided on the inner sides of both ends of the positioning sleeve, which are rotatably and detachably connected to the second axial hole at the rear end of the upper wing. Second positioning buckles are provided on both sides of the upper rear end of the sleeve. Mounting seats are provided on the outer sides of both ends of the sleeve. A sleeve that can accommodate the second axial pin of the side expansion plate is provided on the outer sides of the seats. The sleeve is an open sleeve to enable the side wing to pivot relative to the mounting seat.

[0025] In another preferred embodiment, the edge portions on both sides of the front end of the open sleeve are made into undercuts so that the second shaft pin can rotate flexibly and will not slip when in use. In another preferred embodiment, the second positioning hook and the second shaft pin should be elastic. In another preferred embodiment, the expansion spacing of the left expansion piece and the right expansion piece in the maximum expansion state is greater than 88mm.

[0026] In another preferred example, the upper expansion piece comprises: an upper wing, and a handle integral with the upper wing and extending backward along the rear end (or end, the same below) of one side of the upper wing, a first axle pin is provided between the upper wing and the handle, and a second axle hole for accommodating the second axle pin is provided in front of the first axle pin; a handle side hole is also provided on the handle, and a positioning buckle for engaging with a positioning hook is provided at the end of the handle side hole; the lower expansion piece comprises: a lower wing, and a handle integral with the lower wing and extending downward from the rear end of the lower wing, an axle hole is provided between the lower wing and the handle; a handle side hole and an oblique pad are provided on the handle, and the oblique pad is provided at the end of the handle side hole; in another preferred example, or an axle hole is provided between the upper wing and the handle, and an axle pin is provided between the lower wing and the handle.

[0027] In another preferred embodiment, a limiting groove is provided in the middle of the rear portion of the upper wing for placing the inner limiting block of the positioning sleeve, so as to limit the extreme range of downward rotation of the positioning sleeve and the side wing.

[0028] In another preferred embodiment, the first expansion positioning device is a hook-and-loop expansion positioning self-destruction device, which includes a positioning seat installed on the side hole of the handle and the inclined pad, and a self-destruction strip and a positioning rod integrally formed with the positioning seat are arranged in front and back on the positioning seat, the positioning rod passes through the side hole of the handle, and a positioning hook is provided on the back of the rod which can engage with the positioning buckle at the end of the side hole of the handle, and at least one of the self-destruction strip and the positioning rod should be elastic.

[0029] In another preferred embodiment, when the positioning hook and positioning buckle of the hook-and-buckle expansion positioning self-destruction device are engaged and expanded to the maximum gear, the opening angle of the upper and lower wings can reach >40 degrees.

[0030] In another preferred embodiment, the four-wing speculum further includes an expansion self-destruction device, which includes a thin sheet provided on the push handle and a stamping strip provided on the grip. In another preferred embodiment, the push handle has a thin sheet fixed on at least one side on the upper part; the grip has a stamping strip corresponding to the position of the thin sheet on the upper part.

[0031] In another preferred embodiment, a double-layer handle side hole is provided in the middle of the handle, the bottom layer is larger than the upper layer, and the shape of the bottom layer is consistent with the positioning seat. In another preferred embodiment, the inclined pad is provided at the end of the bottom layer. In another preferred embodiment, the top end of the self-destruct strip extends forward to form a crown. In another preferred embodiment, a convex protrusion is optionally provided on the handle, which is provided in front of the handle side hole, and the crown is engaged with the convex protrusion located in front of the handle side hole.

[0032] In another preferred embodiment, a wedge-shaped positioning buckle is provided at the end of the hole next to the handle.

[0033] In another preferred embodiment, a rectangular handle side hole is provided in the middle of the handle, and a wedge-shaped positioning buckle is provided at the end of the handle side hole.

[0034] In another preferred embodiment, the handle side hole has an inclined pad at the rear end of the bottom of the hole.

[0035] In another preferred embodiment, the handle has a nearly circular handle side hole in the middle, a double-layer design, the bottom layer is larger than the upper layer, the shape of the bottom layer is consistent with the positioning seat, and the shape of the upper layer is not limited.

[0036] In another preferred embodiment, the positioning seat is polygonal in shape, thick in the front and thin in the back. Optimally, it is shaped like a treasure gourd, thick in the front and thin in the back.

[0037] In another preferred embodiment, the self-destruct strip is in the shape of a long strip, with a crown at the head end, and the whole is slightly tilted forward. The front of the strip is the front wall of the handle side hole, and the rear is the positioning rod. In another preferred embodiment, the self-destruct strip is shaped like a "7" horizontally.

[0038] In another preferred embodiment, the positioning rod is arc-shaped as a whole, with a push handle on the top, a positioning hook arranged in a serrated pattern in the middle of the back, and a relatively flat lower portion that tilts forward.

[0039] In another preferred embodiment, the axle pins are slightly larger at both ends and slightly smaller in the middle, solid in the middle and lower parts, and open in the middle and upper parts, the edge diameter of the open piece is slightly larger than the diameter of the open piece, and the whole is dumbbell-shaped.

[0040] The expansion positioning and self-destructing device and / or expansion self-destructing device of the present invention are also suitable for other double-wing, three-wing, four-wing or multi-wing vaginal dilators. The upper expansion piece, lower expansion piece and expansion positioning and self-destructing device and / or expansion self-destructing device can all be made of degradable materials.

[0041] The above-mentioned side expansion piece with a solid structure without a channel is particularly suitable for making an inspection type, which is used for vaginal screening of precancerous lesions and vaginal examination of patients with vaginal side wall prolapse, vaginal relaxation, and extreme obesity, as well as physical treatments such as laser and microwave.

[0042] The side expansion piece with a hollow channel structure is particularly suitable for making a surgical type, and is used for ultra-high frequency radio wave knife and other surgeries for patients with cervical cancer and precancerous lesions. The smoke generated by the ultra-high frequency radio wave knife surgery can be directly discharged from the body through the pipe joint connected to the negative pressure device, which is very convenient and practical.

[0043] The pipe joint has at least three functions. The first is to act as a first handle: when the pipe joint and the second handle are pinched together, the second positioning hook can be lifted up and moved on the second positioning buckle above the positioning sleeve; the second is that when the pipe joint is not connected to a negative pressure device, the expander can be used for inspection; the third is that when the pipe joint is connected to a negative pressure tube, it can be used for surgical smoke exhaust and the like.

[0044] According to the self-destructive four-wing speculum of the present invention, when in use, the left and right wings are folded in a closed state between the upper and lower wings and inserted into the vagina, the grip handle and the push handle are controlled to open the upper and lower wings to the desired field of view, and the field of view is maintained by the first expansion and fixing structure, and then the first handle or the pipe joint and the second handle at the rear end of the left and right wings are controlled in opposite directions, and the end of the second positioning hook is tilted upward with the traction of the second handle, which is very convenient for suspended movement above the second positioning buckle and engagement with it, so that the left and right wings are expanded and fixed according to clinical needs. At this time, the vagina and cervix can be observed and inspected or surgery and microwave treatment can be performed through the expanded field of view of the upper and lower wings and the left and right wings.

[0045] When ultra-high frequency radiosurgery is required for the vagina or cervix, the smoke generated can be discharged through the openings on the inner side or front end of the left and / or right wing, through the channel and under the condition of connecting a negative pressure device at the rear end.

[0046] When it is necessary to install a lighting device, such as an LED, at the opening on the inner side or front end of the left and / or right wing, its power supply line can be led out to the power supply through the channel in the side wing, so that the inspection or operation site can be performed under lighting conditions.

[0047] When it is necessary to install a camera in the opening on the inside or front end of the left and / or right wing, it can provide real-time images of the inspection area.

[0048] After the examination and operation, pinch the first handle and the second handle toward each other to loosen the second expansion positioning device on the meshing side expansion piece and the positioning sleeve, put the left and right wings into the upper and lower wings, then release the first expansion positioning device, close the upper and lower wings, and then take out the speculum from the vagina.

[0049] Compared with the prior art, the present invention has the following beneficial effects:

[0050] 1. The present invention sets the second positioning buckle on the positioning sleeve. This design change can make the inner diameter spacing of the left and right wings reach >88mm, which is 1.52 times higher than the 58mm of the known technology that sets the second positioning buckle on the mounting seat, proving that it has significant improvement. This greatly improves the effectiveness of medical devices in clinical practice, whether it is seeing a doctor, sampling, surgery, physical therapy, etc.

[0051] 2. The present invention is provided with a second handle on the second positioning hook, which overcomes the serious drawbacks of the known technology that the rear end of the four-wing side expansion piece has only one handle and cannot be adjusted and disengaged. The present invention has an ingenious design of adding a second handle above the second positioning hook, so that when the doctor uses it clinically, he only needs to pinch the first handle or the pipe joint and the second handle toward each other, and the second handle located above the second positioning hook will drive the end of the second positioning hook to bend upward, so that the second positioning hook can be suspended above the second positioning buckle, moved, fixed or disengaged, so that the left and right wings can be horizontally opened outward and folded inward between the upper and lower wings.

[0052] 3. The present invention designs the first expansion positioning device as a hook expansion positioning self-destruction device. The operation process is completely consistent with the non-self-destruction expander, but at the same time achieves the purpose of self-destruction. When the upper and lower wings are expanded, the opening angle of the two wings reaches >40 degrees. First, there is enough field of view, and second, cross infection of iatrogenic diseases is eliminated, which plays a role in protecting people's health and the safety and effectiveness of medical devices.

[0053] 4. The present invention also makes the second shaft pin of the side expansion piece into an elastic second shaft pin, which is very convenient for installing it in the shaft sleeve, and has good practicality in clinical use, and is easy and flexible to rotate.

[0054] 5. The edge portions on both sides of the front end of the shaft sleeve on the positioning seat are made into undercuts in the present invention so that the second shaft pin will not slip off during use and is safe and reliable. BRIEF DESCRIPTION OF THE DRAWINGS

[0055] Figure 1 This is a schematic diagram of the structure of the speculum before use and in the vaginal closure state (surgical type);

[0056] Figure 2 for Figure 1 The enlarged diagram of the middle circle;

[0057] Figure 3 for Figure 1 Schematic diagram showing the upper and lower wings opening at an angle of >40° in the expanded state when in use (surgical type);

[0058] Figure 4 for Figure 3 The enlarged diagram of the middle circle;

[0059] Figure 5 for Figure 1 The schematic diagram of the structure in the closed state after use and destruction is shown (surgical type);

[0060] Figure 6 for Figure 5 The enlarged diagram of the middle circle;

[0061] Figure 7 This is a schematic diagram of the expansion piece structure on the speculum;

[0062] Figure 8 This is a schematic diagram of the structure of the expansion piece under the speculum;

[0063] Fig. 9 This is a top view of the positioning sleeve of the speculum;

[0064] Fig.10 This is the rear view of the positioning sleeve of the speculum;

[0065] Fig.11 It is a schematic diagram of the solid structure of the left and right expansion pieces of the speculum;

[0066] Fig.12 This is a schematic diagram of the hollow structure of the left and right expansion pieces of the speculum;

[0067] Fig.13 This is a schematic diagram of the open distance between the left and right wings of the speculum when in use in the expanded state > 88mm (inspection type);

[0068] Fig.14 This is a schematic diagram of the structure of the hook and buckle expansion positioning self-destruction device of the speculum;

[0069] Fig.15 This is a schematic diagram of the thin sheet structure of the expansion sheet on the speculum;

[0070] Fig.16 This is a schematic diagram of the structure of the expansion piece with a stamp bar under the speculum; DETAILED DESCRIPTION

[0071] The present invention is described in detail below in conjunction with the accompanying drawings and specific embodiments. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

[0072] First refer to the attached Figure 1-8The self-destructive four-wing speculum includes an upper expansion piece 01, the upper expansion piece 01 includes an upper wing 01-1, and a handle 01-2 which is integral with the upper wing 01-1 and extends downward along the rear end of one side of the upper wing, and an axle pin 01-3 is provided on the left and right sides of the inner surface of the rear end of the upper wing, and a second axle hole 01-4 is also provided in front of the axle pin 01-3, and the second axle hole 01-4 is rotatably connected to the second axle pin 03-21, and the handle 01-2 is also provided with a handle side hole 01-8, and a positioning buckle 01-9 for engagement with a positioning hook is provided at the end of the handle side hole; a lower expansion piece 02, the lower expansion piece 02 It comprises a lower wing 02-1, a handle 02-2 which is integral with the lower wing 02-1 and extends downward along the lower wing 02-1 at a nearly right angle thereto, the handle is provided with a handle side hole 02-8, a convex protrusion 02-7 and an inclined pad 02-9, the inclined pad 02-9 is located at the rear end of the bottom layer of the handle side hole 02-8, an axis hole 02-3 is provided between the lower wing and the handle, the convex protrusion 02-7 is provided in front of the handle side hole 02-8, the upper wing 01-1 and the lower wing 02-1 are connected at both sides of the rear end by pins respectively, so that the upper wing 01-1 and the lower wing 02-1 can be opened and closed by controlling the handle 01-2;

[0073] Please refer to the attached Figure 1-6 14. A first expansion positioning device for fixing the upper wing 01-1 and the lower wing 02-1 in the open state is a hook expansion positioning self-destructing device 09, which cleverly combines the positioning function during use with the function of automatic destruction before taking out the expander after use. The device further includes a positioning seat 09-12 located in the handle side hole 02-8 and the inclined pad 02-9. The positioning seat 09-12 extends upward to form an arc-shaped positioning rod 09-13 and a self-destructing strip 09-16 located in front of the positioning rod 09-13. The upper end of the positioning rod 09-13 is a push handle 09-15. The back of the positioning rod 09-13 is provided with a positioning hook 09-14. The positioning hook 09-14 passes through the handle side hole 01-8 and engages with the positioning buckle 01-9 at its end to position it. The doctor can quickly fix, adjust and fix it according to the size of the surgical scope.

[0074] Continue to view Fig.14The self-destruct strip 09-16 is a shorter and smaller strip that is slightly tilted forward. The front is close to the front wall of the handle side hole 02-8. Due to the front and rear tension of the self-destruct strip 09-16 and the positioning rod 09-13, the positioning seat 09-12 is more firmly fixed in the handle side hole 02-8 and the inclined pad 02-9. When the doctor has finished using the device, he pushes the push handle 09-18, and the self-destruct strip 09-16 is subjected to the force exerted by the push handle 09-18 and the positioning rod 09-13. The abdomen of the self-destruct strip 09-16 is squeezed by the front wall of the handle side hole 02-8, causing it to "fracture" and break immediately. In addition, the positioning rod 09-13 causes the positioning seat 09-12 to slip out of the lever action through the positioning seat 09-12 and the inclined pad 02-9, causing the self-destruct strip 09-16 to "fracture" and break immediately. Therefore, the "fracture" of the self-destruct strip 09-16 occurs almost at the same time as the positioning seat 09-12 slips out of the handle side hole 02-8 and the inclined pad 02-9. Due to the slip of the positioning seat 09-12, When the positioning rod 09-13 is out of position, the positioning rod 09-13 can no longer be buckled with the positioning buckle 01-9 for expansion and positioning. All this happens and is completed in an instant, and the broken parts of the self-destruct strip 09-16 are almost all at the root, shaped like a "fracture". Therefore, even if the self-destruct strip 09-16 is broken, it is still connected to the positioning seat 09-12 and will not fall off alone; after the positioning rod 09-13 is out of position, it is still connected to the positioning seat 09-12 and will not fall off alone. Therefore, when the doctor takes it out, it is still an integral dilator, just like a disposable vaginal dilator without an instant-destruction device. Therefore, the operation is simple and labor-saving, convenient and practical, safe and effective.

[0075] Please continue to see Figure 1-6 14. According to another preferred embodiment of the present invention, the head end of the self-destruct strip 09-16 extends forward to form a crown 09-17, so that the self-destruct strip 09-16 with the crown 09-17 is shaped like a "7" laterally, and accordingly, it is just engaged with the convex protrusion 02-7 located in front of the handle side hole 02-8. The self-destruct strip 09-16 with the crown 09-17 is more likely to break and self-destruct when squeezed by the front wall of the handle side hole 02-8, and when the self-destruct strip 09-16 with the crown 09-17 is squeezed and broken, the "fracture" is usually still at the root, so the operation is also time-saving and labor-saving, simple and convenient, safe and effective.

[0076] Continue to see the attached Figure 1-8 The first expansion positioning device 09 is designed on one side of the push handle 01-2 and the grip handle 02-2, which has the advantage of expanding the field of view and space of the entire expander. When the upper and lower wings are expanded, the opening angle of the upper and lower wings can reach >40°, which is very beneficial for various gynecological and obstetric operations and various examinations, because >40° can fully expose the vagina and cervix, and can effectively protect the vaginal opening from excessive expansion, making clinical use more conducive to diagnosis and treatment and surgery, and more safe and effective.

[0077] Please refer to the attached Figure 15-16 According to another preferred embodiment of the present invention, the expansion self-destruction device described in the speculum of this embodiment includes a thin sheet 01-6 provided on the push handle 01-2 and a stamping strip 02-6 provided on the grip 02-2, and has an expansion self-destruction function of simultaneous and automatic destruction during expansion. During the expansion process, the stamping strip 02-6 on the grip 02-2 will immediately pierce the thin sheet 01-6 on the push handle 01-2 to achieve self-destruction, which is very practical clinically. It can be clearly seen with the naked eye that the expander has been used clinically and will not be used again.

[0078] Continue to view Figure 1-2 Before clinical use, the upper wing 01-1, the lower wing 02-1, and the left and right wings 04-10 are all in a closed state. When clinical use begins, the doctor puts the dilator into the vagina, and the upper wing 01-1, the lower wing 02-1, and the left and right wings 04-10 are still in a closed state. At this time, it can be seen that the self-destruct strip 09-16 and the head crown 09-17 are intact, and the thin sheet 01-6 of the expansion self-destruct device located on the handle 01-2 is also intact, and they are all still in normal positions.

[0079] Continue to view Figure 3-4 , Figure 15-16 When used clinically, the doctor presses the handle 01-2, the upper wing 01-1 and the lower wing 02-1 are expanded to the required field of view, the positioning hook 09-14 enters the positioning buckle 01-9 to engage and fix, the left and right wings 04-10 are also expanded to the required position, and the doctor begins to check, diagnose and perform surgery. At this time, the self-destruction strip 09-16 is also intact, and during the expansion process, the stamping strip 02-6 on the handle 02-2 immediately punctures the thin film 01-6 on the handle 01-2 to achieve self-destruction, which does not increase any cost, is simple and practical, and is clear at a glance.

[0080] Please see Figure 5-6 According to a preferred embodiment, when the clinical examination or operation is completed, the doctor pinches the surgical tube connector 04-8 and the second handle 04-5, and the second handle 04-5 will pull the second positioning hook 04-4 and use its elasticity to easily detach from the second positioning buckle 03-5, and easily retract the side wing 04-10 to the upper and lower wings; at this time, the doctor pushes the push handle 09-15 forward, and due to the thrust and elasticity of the positioning rod 09-13, the positioning rod moves forward so that the self-destruct strip 09-16 is squeezed by the front wall of the upper middle part of the handle side hole 02-8, and its root will immediately be "fractured" and cannot be restored, and the positioning hook 09-14 will naturally detach from the positioning buckle 01-9, and the upper and lower wings will automatically close, and the doctor can take out the speculum.

[0081] Please see Figure 7-8According to a preferred embodiment of the present invention, a double-layer handle side hole 02-8 is provided on the outer side of the middle part of the handle 02-2, corresponding to the handle side hole 01-8. The bottom layer is larger than the upper layer, and an inclined pad 02-9 is provided at the rear end of the bottom layer of the hole. This design, which pays attention to even the details, can make the bottom layer have a larger space than the upper layer, which is convenient for installation.

[0082] According to another embodiment of the present invention, the bottom layer of the handle side hole 02-8 is designed to be a treasure gourd shape, and the positioning seat 09-12 in the shape of a treasure gourd that matches the shape of the bottom layer can be more firmly installed in the bottom layer of the handle side hole 02-8, which is both beautiful and practical, and ensures safe and reliable clinical use. The design of the upper and lower layers can reduce the overall thickness of the positioning seat 09-12, and the design of the positioning seat 09-12 being thick in the front and thin in the back makes it easier for the positioning seat 09-12 to slip out of the handle side hole 02-8 and the oblique pad 02-9 under the action of the forward thrust of the push handle 09-18, through the transmission of the positioning rod 09-13 and under the lever action of the oblique pad 02-9, and the positioning rod 09-13 is out of place, and can no longer be tightly screwed with the positioning buckle 01-9, thereby losing the expansion and positioning functions. The three are "self-destructed" at the same time and cannot be restored, so it can only be used once, thereby achieving the purpose of eliminating cross-infection of medical diseases.

[0083] Please see Figure 9-10 According to a preferred embodiment of the present invention, the positioning sleeve 03 is rotatably and detachably connected to the second shaft hole 01-4 at the rear end of the upper wing through the second shaft pin 03-2 on the inner sides of the two ends of the sleeve 03-1, so it can be rotated up and down, a limit block 03-4 is provided in the middle of the inner side of the positioning sleeve, and a mounting seat 03-3 is provided at each of the two ends of the outer side of the sleeve, and a sleeve 03-6 is provided on the outer side of the seat to receive the second shaft pin 04-3 retracted between the upper and lower wings, and the edges or parts of the two sides of the front end of the sleeve 03-6 are made into undercuts 03-9 to ensure that the second shaft pin will not slip off during clinical use and is safe and reliable; second positioning buckles 03-5 are also provided above the two ends of the positioning sleeve, and the second positioning buckles 03-5 are meshed with the second positioning hooks 04-4 to form a second expansion positioning device; the limit block 03-4 can position the side wing 04-10 when it moves downward to the optimal position.

[0084] Please continue to see Figure 9-10 Preferably, a sleeve protrusion 03-8 may be provided in the front center of the positioning sleeve 03, and sleeve grooves 03-7 may be provided above and below the positioning sleeve 03. By holding the sleeve groove 03-7 or the sleeve protrusion 03-8, the positioning sleeve 03-1 can drive the side expansion piece 04 to move up and down.

[0085] Please see Fig.11According to one embodiment of the present invention, there is no channel in the side expansion piece. The side expansion piece 04 of this solid structure has a very simple structure, which consists of: a side wing 04-10, a second axle pin 04-3, a second positioning hook 04-4 and a second handle 04-5 thereon, and a first handle 04-8 at the rear end. It is particularly suitable for non-surgical screening of precancerous lesions or examination and sampling of patients with vaginal wall mucosal prolapse, microwave, laser and other physical treatments.

[0086] Please see Fig.12 According to another embodiment of the present invention, the side expansion piece 04 has a channel. The side expansion piece 04 with a hollow structure is composed of a main body 04-1 and a channel cover 04-2 thereon, and a channel 04-6. The inner side of the front end of the channel cover 04-2 has a positioning protrusion 04-9, and the channel cover 04-2 can be quickly and accurately installed on the main body positioning recess (not shown). The front end of the channel has at least one channel opening 04-7, and from back to front, they are: a pipe joint 04-8, a radially inward second positioning hook 04-4 and a second handle 04-5 on the inner side of the front of the pipe joint, a second shaft pin 04-3 is in front of the second positioning hook, and the middle front part is a side wing 04-10. This hollow side expansion piece is particularly suitable for patients undergoing cervical surgery and other transvaginal surgery, such as patients with cervical cancer or cervical precancerous lesions who need ultra-high frequency radiofrequency knife surgery (also known as LEEP knife surgery, etc.), which not only has a wide surgical space, comprehensive exposure, and a large and clear surgical field, but also can simultaneously eliminate toxic smoke during surgery, and is also used for flushing the vagina, etc.

[0087] Please continue to see Fig.12 On the other hand, since the side expansion piece 04 is designed to be split through the main body 04-1 and the channel cover 04-2, it is very beneficial for production and assembly, injection molding demolding and rapid product realization, and at the same time it is beneficial to reduce the mold volume and mold costs. Moreover, the installer can open the channel cover 04-2 and accurately install the required objects in place. The design is very clever and practical, such as installing lighting, cameras and smoke exhaust filters and laying power lines, etc. Moreover, this hollow structure of the side expansion piece 04 can also be used for cervical precancer screening and other examinations when there is no need for an external smoke exhaust negative pressure device; so the various designs of this side expansion piece 04 are very clever and scientific, reasonable and advanced.

[0088] Continue to view Figure 11-12 The second shaft pin 04-3 of the side expansion piece is designed to be open and flexible, so that it is easy to install into the shaft sleeve 03-6, and it is flexible to rotate when in use, and it is convenient and practical to operate. Also, because the second positioning hook 04-4 is located at the free end and is elastic, the second handle is also set to the free end, and when in use, it can enter or exit the second positioning buckle 03-5 as the second handle 04-5 on it rises, which is convenient for adjustment and fixing.

[0089] Please see Figure 3 , Figure 13-14 The present invention has the above-mentioned first expansion positioning device and second expansion positioning device. Doctors can not only adjust the upper, lower, left and right wings in four directions according to the needs of clinical patients to effectively expand the upper and lower walls and left and right walls of the vagina to the desired position, but also when expanded to the maximum gear, the opening angle between the upper and lower wings can reach>40°, and the horizontal spacing of the left and right wings can reach>88mm. After the examination or operation is completed, the left and right wings 04-10 are first retracted inwardly into the upper and lower wings (01-1, 02-1), and finally the upper and lower wings (01-1, 02-1) are retracted and closed. At the same time, the expander realizes self-destruction during the operation, killing two birds with one stone.

[0090] According to a preferred embodiment, the axle pins described in the present invention are large at both ends and small in the middle, the lower middle part is solid, and the upper middle part is split and elastic, the edge diameter of the split is slightly larger than the split diameter, and the overall shape of the axle pin is like a dumbbell, which is not only easy to assemble, but also easy and convenient to rotate during clinical use, and flexible, thereby improving the doctor's work efficiency.

[0091] The expansion positioning self-destructing device and / or the expansion self-destructing device described in the present invention are also suitable for use in other double-wing, three-wing, four-wing and multi-wing vaginal specula.

[0092] The four-wing speculum of the present invention can be made of degradable materials to reduce pollution, reduce damage to human health and protect the environment.

[0093] The preferred specific embodiments of the present invention are described in detail above. It should be understood that a person skilled in the art can make many modifications and changes based on the concept of the present invention without creative work. Therefore, any technical solution that can be obtained by a person skilled in the art through logical analysis, reasoning or limited experiments based on the concept of the present invention on the basis of the prior art should be within the scope of protection determined by the claims.

Claims

1. A self-destructive four-wing speculum, comprising an upper expansion piece, a lower expansion piece, at least one side expansion piece and a positioning sleeve, wherein the upper expansion piece and the lower expansion piece are rotatably connected and positioned by an expansion positioning device, and the positioning sleeve is rotatably connected to the upper expansion piece and the side expansion piece, respectively, characterized in that: It also includes a first expansion and positioning device composed of a hook expansion and positioning self-destructing device, and a second expansion and positioning device formed by a second positioning hook with a second handle on the side expansion piece and a second positioning buckle above the two ends of the positioning sleeve; One end of the second positioning hook is fixedly connected to the side expansion piece, and the other end is a free end, and the second handle is arranged on the free end; The side expansion piece includes a solid structure without a channel and a hollow structure with a channel. The rear end of the solid structure is a first handle, and the rear end of the hollow structure is a pipe joint. In front of the first handle or the pipe joint, there is a second radially inward positioning hook and a second handle, a second shaft pin and a side wing extending upward integrally with the second positioning hook in sequence. The first handle or the pipe joint and the second handle are kneaded toward each other to drive the free end of the second positioning hook of the side expansion piece to bend upward and move above the second positioning buckle, so that the left and right wings are horizontally opened outward and folded inward between the upper and lower wings; The side expansion piece of the hollow structure is a channel composed of a channel body and a channel cover thereon, the inner side of the front end of the channel cover is provided with a positioning protrusion matching the positioning concave provided on the body, and the front end of the channel has at least one channel opening; The positioning sleeve has a protrusion in the middle of its outer side, and the positioning sleeve and the side wings can be adjusted up or down by moving the protrusion upward or downward. The inner sides of both ends of the positioning sleeve are provided with second axle pins which are rotatably and detachably connected with the second axle hole at the rear end of the upper wing. Second positioning buckles are provided on both sides of the upper rear end of the sleeve. Mounting seats are provided on the outer sides of both ends of the sleeve. A sleeve which can receive the second axle pin of the side expansion piece is provided on the outer sides of the seats. The sleeve is an open sleeve, and the edge parts on both sides of the front end of the open sleeve are made into inverted buckles. The first expansion positioning device is a hook-and-buckle expansion positioning self-destruction device, which includes a positioning seat installed on the side hole of the handle and the inclined pad, and a self-destruction strip and a positioning rod integrally formed with the positioning seat are arranged in front and back on the positioning seat. The positioning rod passes through the side hole of the handle, and a positioning hook is provided on the back of the rod that can engage with the positioning buckle at the end of the side hole of the handle. At least one of the self-destruction strip and the positioning rod should be elastic.

2. The self-destructive four-wing speculum according to claim 1, characterized in that: The upper expansion piece includes: an upper wing, and a handle which is integral with the upper wing and extends backward along the rear end of one side of the upper wing, a first axle pin is provided between the upper wing and the handle, and a second axle hole which can receive the second axle pin is provided in front of the first axle pin; a handle side hole is also provided on the handle, a positioning buckle for engagement with a positioning hook is provided at the end of the handle side hole, and a limiting groove is provided in the middle of the rear part of the upper wing; the lower expansion piece includes: a lower wing, and a handle which is integral with the lower wing and extends downward from the rear end of the lower wing, an axle hole is provided between the lower wing and the handle; a handle side hole and an oblique pad are provided on the handle, and the oblique pad is provided at the end of the handle side hole; and the positions of the first axle pin and the axle hole are interchangeable.

3. The self-destructive four-wing speculum according to any one of claims 1 to 2, characterized in that: The four-wing speculum also includes an expansion self-destruction device, which includes a thin sheet provided on the handle and a stamping strip provided on the gripping handle.

4. The self-destructive four-wing speculum according to any one of claims 1 to 2, characterized in that: The first axle pin and the second axle pin are large at both ends and small in the middle, the lower middle part is solid, and the upper middle part is open and elastic, the edge diameter of the open piece is slightly larger than the diameter of the open piece, and the whole is dumbbell-shaped.

5. The self-destructive four-wing speculum according to claim 1, characterized in that: The expansion positioning and shape-destroying device and the expansion self-destructing device are also suitable for other double-wing, three-wing, four-wing or multi-wing vaginal dilators.

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