Instant Destructible Four-Wing Vaginal Dilator

Abstract

A destructible four-wing vaginal dilator includes an upper dilator and a lower dilator, the upper dilator includes an upper wing and a push handle integral with the upper wing and extending downward along one side of the upper wing at an obtuse angle thereto, the lower dilator includes a lower wing and a grip integral with the lower wing and extending downward along one side of the lower wing at a nearly right angle thereto, the two sides of the rear ends of the upper wing and the lower wing are connected to the shaft hole through a shaft pin, the push handle and the grip can be positioned by an expansion positioning device, characterized in that it also includes a first expansion positioning device composed of a spiral expansion positioning destructible device and a second expansion positioning device composed of a positioning connector meshed with a side dilator. The 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 an instant-destructible four-wing vaginal dilator. 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 for inspection has at least twelve parts, and a surgical type has at least eight parts. Its advantage is that the upper and lower wings open at an angle of >40° 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 my country 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 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 vision of the upper and lower wings. With the emergence and increase of some new diseases in clinical practice, some patients with particularly obesity and loose vaginas and some patients who need to undergo ultra-high frequency radio wave knife (also known as LEEP knife) surgery in clinical practice will be encountered. When a 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 the 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 radio wave knife will produce harmful smoke with a piercing throat and a burnt smell during surgery, affecting the health of doctors and patients, so a vaginal dilator with a smoke exhaust device is clinically needed.

[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] The above-mentioned four-wing speculum invented by Americans has many parts, even more than 20, which is cumbersome and heavy, inconvenient to operate, expensive, and has many defects. The four-wing speculum invented by our Chinese Lin Jing, Zhang Xingxing, etc. (the patent name is "Vaginal Dilator with Double Side Wings"), the Chinese invention patent authorization number is ZL201010227014.9, a four-wing speculum has only 4 parts in total (including an upper dilator, a lower dilator, a positioning sleeve and a pair of side dilators), with extremely few parts, simple operation, economical and practical, and excellent functions. No matter from which aspect, it is far superior to the four-wing speculum invented by Americans. In addition, a large amount of smoke will inevitably be generated during UHF radiofrequency knife surgery, which requires functions such as smoke exhaust and lighting. For this, our Chinese Zhang Xingxing and Lin Jing and others first invented the "Vaginal Dilator with Upper and Lower Wings with Attached Wings". The Chinese invention patent authorization number is ZL201010227012.X. It is the first at home and abroad to propose setting upper and lower attached wings composed of channels and channel covers on the inner surface of the upper and lower wings, which solves the problem of quickly removing toxic smoke from the area closest to the surgery 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.

[0008] We have applied for the above two patents in the United States and Europe at the same time, and have been authorized by the United States Patent Office with patent number US 8,876,711 B2EP and by the European Patent Office with patent number EP 2 586 486 B1.

[0009] When the upper and lower wings are expanded, the opening angle of the upper and lower wings is >40°, and they can be retracted and closed. This is a safety and effectiveness indicator of the vaginal dilator. What we are facing is how to make the opening distance of the left and right wings >88mm when the left and right wings are expanded, and they can be retracted between the upper and lower wings. This has been a long-standing problem and was finally solved by us Chinese. With such a perfect structure, the four-wing vaginal dilator can be put into and taken out of the vagina just like a double-wing vaginal dilator with only upper and lower wings. It is a very user-friendly design, which reduces the patient's pain to a minimum. Compared with the four-wing vaginal dilator invented by foreigners, its advantages in all aspects are obvious.

[0010] So far, a common defect of four-wing vaginal dilators at home and abroad is that there is only one handle (or pipe joint) at the rear end of the left and right expansion plates but no second handle. In clinical operation, it is found that it is difficult to make the second positioning hook tilt up with only the first handle, 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 impossible to make the second positioning hook disengage from the positioning buckle and lose its practical value. Therefore, the second handle is added during the design of the present invention, and the result is completely different. By pinching the first handle and the second handle, the doctor can make the inner end of the side expansion plate gear under the second handle tilt up and easily engage or disengage with the positioning connection gear. It is easy to operate and easy to adjust. This is a fundamental change and improvement to the original defects of the known technology and has substantial significance and makes it practical.

[0011] On the other hand, the media reported that some lawless elements recycled and reused the products. For this reason, Chinese inventors Lin Jing and Zhang Xingxing first invented the "Instant-destructible Disposable Sterile Vaginal Dilator" in 2004 (the patent name is Instant-destructible 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.

[0012] Therefore, further research is needed on vaginal dilators to overcome their defects and create new specifications to make them better and more complete. Summary of the invention

[0013] The purpose of the present invention is to provide a destructible four-wing vaginal dilator which can overcome the defects of the prior art and provide a new structure.

[0014] In order to achieve the above-mentioned purpose, the technical solution of the present invention provides an instant-destructible four-wing vaginal dilator, comprising an upper expansion piece and a lower expansion piece, the upper expansion piece comprising an upper wing, and a push handle integral with the upper wing, extending downward along one side of the upper wing at an obtuse angle thereto, the lower expansion piece comprising a lower wing, and a gripping handle integral with the lower wing, extending downward along one side of the lower wing at a direction nearly at a right angle thereto, the two sides of the rear ends of the upper wing and the lower wing are connected to the axial hole through an axle pin, the push handle and the gripping handle can be meshed with each other through a first expansion positioning device, characterized in that it also includes a first expansion positioning device composed of a spiral expansion positioning instant-destructible device and a second expansion positioning device composed of a positioning connector gear meshing with a side expansion piece gear.

[0015] The positioning connector, at least one, has a positioning connector shaft pin extending radially inward on the inner side of its lower part, which is rotatably and detachably connected to the second shaft hole at the rear end of the upper wing, and a positioning connector shaft hole for receiving the side expansion plate corner shaft pin for rotatable and detachable connection is also provided on the outer side of the positioning connector shaft pin, and a positioning connector gear meshing with the side expansion plate gear is also provided on the top of the positioning connector;

[0016] At least one of the side expansion pieces has a channel consisting of a channel body and a channel cover thereon, an opening communicating with the channel is provided on the inner side of the front end, and a pipe joint is provided on the rear end. A side expansion piece gear extending radially inward and having a second handle is provided on the inner side in front of the pipe joint, and a side expansion piece corner axis pin extending radially inward and turning backward is provided on the inner side in front of the gear, and the front part of the corner axis pin is a side wing.

[0017] Preferably, one end of the side expansion piece gear is fixedly connected to the side wing, and the other end is a free end, and the second handle is arranged on the free end.

[0018] Preferably, the pipe joint and the second handle are kneaded toward each other to drive the free end of the side expansion piece gear to bend upward and move above the positioning connector gear, so that the two side wings are opened to the desired field of view and meshed.

[0019] Preferably, the left and right wings can be opened horizontally outward to a maximum inner diameter spacing of >88mm and can be folded inwards between the upper and lower wings.

[0020] Preferably, the edge of the channel body has a groove edge for embedding the channel cover, and the groove edge is provided with a plurality of small protrusions that fit closely with the small concave holes on the inner surface of the channel cover, and the positions of the small protrusions and the small concave holes are interchangeable.

[0021] Preferably, the side expansion piece corner axis pin is connected to the positioning connector axis hole, and the positioning connector axis pin located inside the positioning connector axis hole is connected to the second axis hole at the rear end of the upper wing. By turning the pipe joint, the side expansion piece can be driven to rotate together with the positioning connector in the second axis hole of the upper wing, thereby adjusting the upper and lower positions of the side wing.

[0022] Preferably, the upper expansion piece comprises: an upper wing, and a handle integral with the upper wing and extending backward along the rear end of one side of the upper wing, a handle hole is provided on the handle, an axle pin is provided between the upper wing and the handle, and a second axle hole for receiving a second axle pin is provided in front of the axle pin;

[0023] Preferably, the lower expansion piece includes: a lower wing, and a handle integral with the lower wing and extending downward from the rear end of the lower wing, an axial hole is provided between the lower wing and the handle, and the handle is provided with a handle side hole and an inclined pad, and the inclined pad is provided at the end of the handle side hole.

[0024] Preferably, the shaft pin on the upper expansion piece and the shaft hole on the lower expansion piece are interchangeable.

[0025] Preferably, the handle side hole has 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.

[0026] Preferably, the first expansion positioning device is a spiral positioning and destructive device, which includes a positioning seat installed on the side hole of the handle and the inclined pad, and self-destruct strips and screws are arranged in front and back on the positioning seat. The lower part of the screw has a front dome of the screw for accommodating the self-destruct strip. The screw is penetrated by a handle hole and is screwed with a nut for positioning. At least one of the self-destruct strip and the screw should be elastic.

[0027] Preferably, the top end of the self-destruct strip extends forward to form a crown, which is shaped like a "7" horizontally, and the crown is engaged with a protrusion located in front of the hole beside the handle.

[0028] Preferably, when the screw and nut of the first expansion positioning and destruction device are screwed together and expanded to the maximum gear, the opening angle of the upper and lower wings reaches>40°, and the positions of the positioning hook and the positioning buckle are interchangeable.

[0029] Preferably, the axle pin, the positioning connector axle pin and the side expansion plate corner axle pin are large at both ends and small 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 larger than the open piece diameter, and the overall structure is dumbbell-shaped.

[0030] When using the vaginal dilator of the above scheme of the present invention, the left and right wings are folded in a closed state between the upper and lower wings and inserted into the vagina, and the grip and the push handle are controlled to open the upper and lower wings to the desired field of view, and the spiral expansion positioning and destruction device is used to maintain the field of view. Then, the pipe joints and the second handles at the rear ends of the left and right wings are controlled in opposite directions, which can drive the free ends of the side expansion piece gears to bend upward and move above the positioning connecting piece gears, so that the two side wings are opened until the desired field of view is engaged. At this time, the vagina, cervix and / or surgery can be observed and inspected through the expanded field of view of the upper and lower wings and the left and right wings.

[0031] After the examination, treatment or operation, pinch the tube joint and the second handle toward each other to loosen the second expansion and positioning device of the meshing side expansion piece gear and the positioning sleeve gear, retract the left and right wings into the upper and lower wings, and then unlock the spiral expansion positioning and self-destruction device. At this time, the self-destruct strip breaks, the positioning seat slips off, the screw loses its position, the upper and lower wings automatically close and retract, and the doctor can remove the dilator from the vagina.

[0032] The side wing of the present invention can be configured as a left wing or a right wing, and a left wing or a right wing can be installed according to clinical needs, or both left and right wings can be installed at the same time.

[0033] The vaginal dilator according to the present invention provides channels on the side wings, which makes it possible to achieve different usage requirements.

[0034] When ultra-high frequency radiosurgery is required for the vagina or cervix, the smoke generated is discharged through the opening on the inner side of the left and / or right wing, through the pipeline of the channel and connected to the negative pressure device at the rear end.

[0035] The lighting device of the vaginal dilator in the prior art is far away from the surgical site, so the illumination of the deeper inspection site and the surgical site of the vagina is not very good. According to the vaginal dilator of the present invention, on the one hand, because the side wing is designed with a channel, as long as the channel cover is opened, the entire channel is fully exposed, so that it is very convenient and very accurate to install a lighting device, such as an LED, at the opening on the inner side of the left and / or right wing, and its power supply line can pass through the channel of the fully exposed side wing under the direct sight of the operator to pass through the power supply, and after the installation is completed, the channel cover is closed; on the other hand, the length of the side wing is similar to the length of the upper and lower wings, and directly reaches the upper and lower wing heads of the vaginal dilator, so that the deeper parts of the vagina can be operated under better lighting conditions, and all power supplies, power lines and equipment are placed in the channel, which not only improves the inspection and surgical conditions, but also is safe and reliable. With the same principle as above, because of the design of the channel cover, the vaginal dilator of the present invention can install a camera at the channel opening at the front end or inner side of the fully exposed left and / or right wing, whether using wired or wireless transmission, it is possible to provide real-time images of the inspection site or surgical site. This can meet the current medical needs of providing real-time images, providing conditions for clinical diagnosis, and even remote consultation and teaching.

[0036] It is precisely because of the ingenious design of the channel cover that, on the one hand, the channel cover can be opened to meet the needs of operators to accurately, conveniently and quickly install lighting or cameras under direct vision; and it can also meet the need to provide smoke exhaust when the channel cover and the channel are sealed, thus achieving multiple goals at one stroke.

[0037] Thanks to the ingenious design of the channel cover, such long and curved side wings can be made of ordinary plastic or degradable materials and demolded, so that they can be used once and destroyed after use. This is of great significance for vaginal dilators used in LEEP surgery for cervical cancer, in order to prevent cross-infection of iatrogenic diseases.

[0038] The positioning connector is detachably connected to the rear end of the upper wing through the positioning connector shaft pin, and the positioning connector is detachably connected to the side expansion piece, so it is very convenient for tooling. It is completely possible to install a left expansion piece or a right expansion piece according to clinical needs, or to install both left and right expansion pieces at the same time. The present invention has great flexibility and adaptability.

[0039] The destructible four-wing vaginal dilator according to the present invention also has the advantages of simple structure, easy manufacture and low cost.

[0040] Compared with the prior art, the present invention has the following beneficial effects:

[0041] 1. The present invention adds a new specification to obstetrics and gynecology medical devices. It is the first domestic and foreign four-wing vaginal dilator that has a second expansion positioning device with a new structure composed of a positioning connector gear and a side expansion plate gear, and a first expansion positioning device with a new structure composed of a spiral instant-destruct device. The design is very clever, the structure is very simple, and it is cheap, good quality and practical.

[0042] 2. The present invention has no positioning sleeve components. The newly designed positioning connector is smaller and more exquisite than the positioning sleeve of the known technology. The mold of the positioning connector structure is simpler, no "core pulling" is required during production, the cost is low, and the installation by workers is simpler and faster. The clinical operation is simpler, more convenient and practical.

[0043] 3. The present invention is provided with a second handle above the side expansion piece gear which is integrated with the side expansion piece gear, and a pipe joint is provided at the rear end of the side expansion piece, which overcomes the defect of the known technology without a second handle. In the present invention, as long as the pipe joint and the second handle are pinched toward each other, the side expansion piece gear will be tilted upward so that it can be suspended and moved above the positioning connector gear, and positioned according to clinical needs. When surgery is required, the inner diameter spacing of the left and right wings opened horizontally outward can reach >88mm. After use, the left and right wings can be folded inward between the upper and lower wings.

[0044] 4. The present invention designs the first expansion positioning device as a spiral expansion positioning instant destruction device. The entire clinical operation process is completely consistent with the non-instant destruction dilator. When the operation is completed and the dilator is taken out, the push handle or nut is gently pushed forward to achieve instant destruction and irreversibility, eliminating cross-infection of iatrogenic diseases. When the upper and lower wings are expanded, the opening angle of the two wings reaches >40°, which is a very important clinical technical indicator of the vaginal dilator and involves the safe and effective function of medical devices.

[0045] 5. The detachable connection between the positioning connector and the upper wing and the detachable connection between the positioning connector and the side expansion piece of the present invention are cleverly designed and bring great benefits. As far as production is concerned, firstly, after these parts are disassembled, the parts become simple, production is very convenient, mold costs are greatly saved, and equipment investment is also reduced; secondly, after the side expansion piece and the positioning connector are disassembled, it becomes a complete double-wing vaginal dilator with upper and lower wings, which can be used separately in clinical practice and share molds, thereby greatly saving the initial investment in molds.

[0046] 6. It has few parts and low cost. It can be used not only for surgery but also for inspection. There is no need to make any changes to the mold. When the surgery requires smoke exhaust, water drainage, etc., it only needs to be connected to the negative pressure pipe on the pipe joint. If smoke exhaust and water drainage are not required, there is no need to connect the negative pressure pipe. It can be used for both surgery and inspection.

[0047] 7. In addition to the above uses, it can also be used to install lighting, camera and other devices. It has multiple functions and high practical value.

[0048] The above-mentioned purpose and other purposes and advantages of the instant-destructible four-wing vaginal dilator of the present invention are further described below in conjunction with the accompanying drawings and embodiments, but are not intended to limit the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0049] Figure 1 This is a schematic diagram of the dilator in a closed state before use and when entering the vagina;

[0050] Figure 2 for Figure 1 The enlarged diagram of the middle circle;

[0051] Figure 3 This is a schematic diagram of the expander in an expanded state where the upper and lower wings open at angles > 40°;

[0052] Figure 4 for Figure 3 Schematic diagram showing the left and right wings in the expanded state with a spacing of >88mm;

[0053] Figure 5 for Figure 3-4 The enlarged diagram of the middle circle;

[0054] Figure 6 This is a schematic diagram of the closed state of the expander after use and destruction;

[0055] Figure 7 for Figure 6 The enlarged diagram of the middle circle;

[0056] Figure 8 This is a schematic diagram of the structure of the expansion piece on the expander;

[0057] Fig. 9 This is a schematic diagram of the structure of the lower expansion piece of the expander;

[0058] Fig.10 This is a schematic diagram of the structure of the left and right positioning connectors of the expander;

[0059] Fig.11 This is a schematic diagram of the structure of the left and right expansion pieces of the expander;

[0060] Fig.12 This is a schematic diagram of the structure of the spiral positioning and destruction device of the expander. DETAILED DESCRIPTION

[0061] An embodiment of the instant-destructible four-wing vaginal dilator of the present invention will be described below in conjunction with the accompanying drawings. Figure 1-9The destructible four-wing vaginal dilator comprises: an upper dilating piece 01, the upper dilating piece 01 comprises 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 axle pin 03-21 of the positioning connecting member, and a handle hole 01-8 is also provided on the handle 01-2.

[0062] A lower expansion piece 02, the lower expansion piece 02 includes 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 direction nearly at a 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 axial hole 02-3 is provided between the lower wing and the handle, the convex protrusion 02-7 is located in front of the handle side hole 02-8, the upper wing 01-1 and the lower wing 02-1 are connected on 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.

[0063] Please refer to the attached Figure 1-5 12. A first expansion positioning device for fixing the upper wing 01-1 and the lower wing 02-1 in the open state is a spiral expansion positioning and destructible device 09, which cleverly combines the positioning function during use with the destructible function after use. The device further includes a positioning seat 09-12 located in the hole 02-8 next to the handle and the inclined pad 02-9. The positioning seat 09-12 extends upward to form a screw rod 09-14 and a self-destructive strip 09-16 located in front of the screw rod 09-14, and the self-destructive strip 09-16 is placed at the front dome 09-13 of the screw rod. The threaded screw rod 09-14 passes through the handle hole 01-8 and is screwed together with the nut 09-15. The doctor can expand, adjust and fix according to the size of the inspected field of view or the scope of surgery.

[0064] Please see Figure 1-712. The 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, and the back is the front dome of the screw 09-13. Due to the front and rear tension of the self-destruct strip 09-16 and the screw 09-14, 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 pushes the push handle 09-18 or the nut 09-15 after use, the self-destruct strip 09-16 is subjected to the force of the push handle 09-18 or the nut 09-15 together with the screw rod 09-14, and its abdomen is squeezed by the front wall of the handle side hole 02-8 to cause it to "fracture" and break immediately. In addition, the leverage of the screw rod 09-14 through the positioning seat 09-12 and the inclined pad 02-9 causes the impact force when the positioning seat 09-12 slips off, causing the self-destruct strip 09-16 to "fracture" and break immediately. Therefore, the "fracture" of the self-destruct strip 09-16 is almost simultaneous with the slipping of the positioning seat 09-12 from the handle side hole 02-8 and the inclined pad 02-9. 09-12 slips and screw 09-14 loses its position, so screw 09-14 can no longer be screwed together with nut 09-15 for expansion and positioning. All this happens and is completed in an instant, and the broken parts of self-destruct strip 09-16 are almost all at the root, shaped like a "fracture". Therefore, even if self-destruct strip 09-16 breaks, it is still connected to the positioning seat 09-12 and will not fall off alone; after screw 09-14 loses its 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-destruct device. Therefore, the operation is simple and labor-saving, convenient and practical, safe and effective.

[0065] Please continue to see Figure 1-7 12. 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.

[0066] Please see Figure 8-912. The present invention designs the spiral expansion positioning and destruction device on one side of the push handle 01-2 and the grip handle 02-2, which has the benefit of expanding the field of view and space of the entire dilator. The upper and lower wings are opened to the clinically required position for positioning. When the clinical need continues to expand, the opening angle of the upper and lower wings can reach >40°, which fully meets various gynecological and obstetric surgeries and examinations, because >40° can fully expand the vagina, expose the cervix, and effectively protect the vaginal opening from excessive expansion, which is beneficial to clinical diagnosis and surgery, and is safe and effective.

[0067] 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.

[0068] Continue to view Figure 3-5 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 nut 09-15 rotates into the screw 09-14 and is fixed, the left and right wings 04-10 are also expanded to the required position, and the doctor begins to check, diagnose or perform surgery. At this time, the self-destruct strip 09-16 and the crown 09-17 are still intact.

[0069] Please see Figure 6-7 When the clinical operation is completed, the doctor pinches the pipe joint 04-17 and the second wrench 04-16, and the side expansion piece gear 04-15 can be separated from the positioning connector gear 03-23, and the side wing 04-10 is recovered between the upper and lower wings; the doctor retreats the nut 09-15 until the upper and lower wings are closed, and at this time, the push handle 09-18 or the nut 09-15 is pushed. Due to the thrust and elastic force of the screw 09-14 with the push handle 09-18 or the nut 09-15, the self-destruct strip 09-16 or the crown 09-17 is squeezed by the front wall of the upper middle part of the handle side hole 02-8 that protrudes slightly backwards. At this time, the self-destruct strip 09-16 or the crown 09-17 will immediately be "fractured" and cannot be restored.

[0070] Please see Fig. 9 According 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 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 and make the positioning seat 09-12 more stably installed therein.

[0071] Continue to view Fig. 9According 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 the treasure gourd that matches 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 that is 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 and the screw 09-13 to lose its position under the action of the forward thrust of the push handle 09-18, 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, achieving the purpose of eliminating cross infection of medical diseases.

[0072] According to one embodiment of the present invention, at least one positioning connector 03 is provided. In this embodiment, two positioning connectors are provided on the left and right. Fig.10 The left and right positioning connectors are a pair of identical structures but symmetrically arranged. The positioning connector 03 is placed outside the rear end of the upper wing 01-1 and is rotatably and detachably connected to the second shaft hole 01-4 at the rear end of the upper wing 01-1 through the positioning connector pins 03-21 at both ends. The positioning connector shaft pin 03-21 is also provided with a rotatably and detachably positioning connector shaft hole 03-22 for receiving the side expansion plate corner shaft pin 04-18. A positioning connector gear 03-23 ​​meshing with the side expansion plate gear is also provided on the top of the positioning connector.

[0073] According to one embodiment of the present invention, at least one side expansion piece 04 (also called left and right expansion pieces or left and right side expansion pieces) is provided. In this embodiment, the side expansion pieces are provided as two left and right expansion pieces. Fig.11 The left and right side expansion pieces are a pair of identical structures but symmetrically arranged; the side expansion piece 04 has left and right wings 04-10 (also called left and right side wings or side wings) whose front parts are much longer than the rear parts; at least one of the side expansion pieces 04 has a channel 04-12 composed of a channel body 04-11 and a channel cover 04-13 thereon, and an opening 04-14 communicating with the channel 04-12 is provided on the inner side of the front end thereof; the rear end of the side expansion piece 04 is a pipe joint 04-17, and a side expansion piece gear 04-15 extending radially inwardly and having a second handle 04-16 is provided on the inner side in front of the pipe joint 04-17; a side expansion piece corner axis pin 04-18 extending radially inwardly and turning backward is provided on the inner side in front of the gear, and the front part of the corner axis pin 04-18 is the side wing 04-10.

[0074] Please see Figure 3-4When the present invention is expanded, the upper and lower wings 01-1 and 02-1 are expanded to the maximum gear through the positioning hook 09-14 and the positioning buckle 01-9, and the upper and lower wings are meshed so that the opening angle reaches> 40 degrees. The left and right wings 04-10 are kneaded toward each other through the pipe joint 04-17 and the second handle 04-16 to drive the side expansion piece gear 04-15 to bend upward and move to the maximum gear above the positioning connecting piece gear 03-23, and mesh so that the left and right wings (01-1, 02-1) are horizontally opened outwards with a spacing of> 88 mm, and the expansion size of the upper and lower wings (01-1, 02-1) or the left and right wings 04-10 can be adjusted according to clinical needs. It is suitable for cervical cancer examination and vaginal examination of patients with vaginal mucosal prolapse, and is also suitable for cervical surgery such as cervical cancer and precancerous lesions. This ingenious and scientific design guarantees clinical needs to the greatest extent, expands the doctor's field of vision and surgical scope to the greatest extent, avoids the patient's pain to the greatest extent, and has a simple structure, easy operation, safety and effectiveness.

[0075] According to another embodiment of the present invention, the edge of the channel body 04-11 has a groove edge (not shown) for embedding the channel cover 04-13, and the groove edge is provided with a plurality of small protrusions (not shown) that fit closely with the small recessed holes (not shown) on the inner surface of the channel cover 04-13, and the positions of the small protrusions and the small recessed holes are interchangeable.

[0076] Continue to view Figure 10-11 In this embodiment, the side expansion piece corner axis pin 04-18 is connected to the positioning connector axis hole 03-22, and the positioning connector axis pin 03-21 located inside the positioning connector axis hole 03-22 is connected to the second axis hole 01-4 at the rear end of the upper wing. By turning the pipe joint 04-17, the side expansion piece 04 and the positioning connector 03 can be driven to rotate in the second axis hole 01-4 of the upper wing, thereby adjusting the upper and lower positions of the side wing 04-10.

[0077] Continue to view Fig.11 On the one hand, this side expansion piece 04 with channels 04-12 is particularly suitable for use in patients with cervical cancer and cervical precancerous lesions and other transvaginal surgeries, such as ultra-high frequency radiofrequency knife surgery (also known as LEEP knife surgery). It not only has a wide surgical space, a large and clear surgical field, and comprehensive exposure, but also can immediately eliminate toxic smoke during surgery to protect the physical and mental health of medical staff and patients; on the other hand, this side expansion piece 04 with channels 04-12 can be used for inspection as long as the rear end pipe joint is not connected to the negative pressure device, killing two birds with one stone, which is very convenient and practical.

[0078] According to a preferred embodiment of the present invention, the split design of the side expansion piece 04 through the channel body 04-11 and the channel cover 04-13 is very beneficial to production and assembly, mold production and demolding, and reducing mold costs. It is also beneficial for workers to open the left and right expansion piece channel covers 04-13 under direct vision and accurately install the required objects in place. The design is very clever and practical. For example, it can be used to install lighting fixtures, cameras and smoke exhaust filters, and lay power lines, etc. Therefore, the split design of the side expansion piece 04 is very clever and scientific, reasonable and advanced.

[0079] According to a preferred embodiment of the present invention, the axial front end of the channel body 04-11 can be closed or open, and the rear end has an opening that can be matched and connected with any pipeline (such as a negative pressure device) required clinically.

[0080] According to a preferred embodiment of the present invention, there is a groove on the periphery of the channel body 04-11 for receiving the channel cover 04-13. The channel cover 04-13 is an elongated one, which is consistent with the shape of the groove on the channel body 04-11. When the channel cover 04-13 is embedded in the groove of the channel body 04-11, a pipeline is formed, thereby forming a passage consisting of the channel body 04-11, the pipeline between the channel cover 04-13 and the channel front opening 04-14, and the channel rear end opening. When the channel 04-12 is used for smoke exhaust, smoke enters from the front opening 04-14, and is connected to the negative pressure device (not shown) through the above-mentioned passage and the pipeline to exhaust smoke. When it is necessary to install a lighting device or a camera device, the operator can open the channel cover 04-13, and accurately, quickly and conveniently install the LED light or camera in the front opening 04-14 of the channel body 04-11 under direct vision, and the power supply line or signal line can be connected to the opening at the rear end of the channel body 04-11 through the channel 04-12.

[0081] The product of the present invention has the above-mentioned first expansion positioning device and the second expansion positioning device, so that doctors can adjust the expansion angles in the four directions of upper, lower, left and right wings according to the clinical needs, which is beneficial for inspection, diagnosis, sampling, flushing, lighting, smoke exhaust, drainage, physical therapy and surgery.

[0082] After the inspection or operation is completed, the left and right wings 04-10 are first retracted inwards into the upper and lower wings 01-1 and 02-1, and then the upper and lower wings (01-1, 02-1) are retracted, closed, and removed.

[0083] Continue to view Figure 8-11According to a preferred embodiment, the axle pin 01-3, the side expansion piece corner axle pin 04-18 and the positioning connector axle pin 03-21 described in the present invention are large at both ends and small in the middle, the middle and lower parts are solid, and the middle and upper parts are split and elastic. The edge diameter of the split is larger than the split diameter. The overall structure is a dumbbell-shaped axle pin. This split axle pin is not only easy to assemble, but also easy and convenient to rotate during clinical use, and is flexible and free, thereby improving the doctor's work efficiency.

[0084] The applicant has made detailed descriptions of the concepts and embodiments of the present invention. Those skilled in the art may make various changes and improvements on this basis, but these changes and improvements do not deviate from the spirit of the present invention and are all within the scope of protection defined by the claims.

Claims

1. A destructible four-wing vaginal dilator, comprising an upper dilating piece and a lower dilating piece, the upper dilating piece comprising an upper wing and a handle integral with the upper wing and extending downward along one side of the upper wing at an obtuse angle thereto, the lower dilating piece comprising a lower wing and a handle integral with the lower wing and extending downward along one side of the lower wing at a direction nearly perpendicular thereto, the two sides of the rear ends of the upper wing and the lower wing being connected to the shaft hole by shaft pins, the handle and the handle can be positioned by an expansion positioning device, Features: It also includes a first expansion positioning device consisting of a spiral expansion positioning and destruction device and a second expansion positioning device consisting of a positioning connector engaged with a side expansion piece. The positioning connector, at least one, has a positioning connector shaft pin extending radially inward on the inner side of its lower part, which is rotatably and detachably connected to the second shaft hole at the rear end of the upper wing, and a positioning connector shaft hole for receiving the side expansion plate corner shaft pin for rotatable and detachable connection is also provided on the outer side of the positioning connector shaft pin, and a positioning connector gear meshing with the side expansion plate gear is also provided on the top of the positioning connector; At least one of the side expansion pieces has a channel consisting of a channel body and a channel cover thereon, the front end of which is provided with an opening communicating with the channel, the rear end is a pipe joint, the front inner side of the pipe joint is provided with a side expansion piece gear extending radially inward and having a second handle, the front inner side of the gear is provided with a side expansion piece corner axis pin extending radially inward and turning backward, the front part of the corner axis pin is a side wing; One end of the side expansion piece gear is fixedly connected to the side wing, and the other end is a free end, and the second handle is arranged on the free end; The pipe joint and the second handle are kneaded toward each other to drive the free end of the side expansion piece gear to bend upward and move above the positioning connector gear, so that the left and right wings are horizontally opened outward and retracted inward between the upper and lower wings; The edge of the channel body is provided with a groove edge for embedding the channel cover, and the groove edge is provided with a plurality of small protrusions which are closely matched with the small concave holes on the inner surface of the channel cover, and the positions of the small protrusions and the small concave holes are interchangeable.

2. The destructible four-wing vaginal dilator according to claim 1, characterized in that: The side expansion piece corner axis pin is connected to the axis hole of the positioning connector, and the axis pin of the positioning connector is connected and rotated with the second axis hole at the rear end of the upper wing. By turning the pipe joint, the side expansion piece and the positioning connector are driven to rotate in the second axis hole of the upper wing, thereby adjusting the upper and lower positions of the side wing.

3. The destructible four-wing vaginal dilator according to claim 1, characterized in that: The upper expansion piece includes: an upper wing, and a handle integral with the upper wing and extending backward along the rear end of one side of the upper wing, a handle hole is provided on the handle, an axle pin is provided between the upper wing and the handle, and a second axle hole for receiving the axle pin of the positioning connector is provided in front of the axle pin; 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, the handle is provided with a handle side hole and an inclined pad, the inclined pad is provided at the end of the handle side hole, an axial hole is provided between the lower wing and the handle, and the positions of the axial pin and the axial hole can be interchanged.

4. The instant-destructible four-wing vaginal dilator according to claim 3, characterized in that The handle side hole is designed with double layers, 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.

5. The instant-destructible four-wing vaginal dilator according to claim 1, characterized in that The first expansion positioning device is a spiral positioning and destructive device, which includes a positioning seat installed on the side hole of the handle and the inclined pad, and a self-destruct strip and a screw are arranged in front and back on the positioning seat. The lower part of the screw has a screw front dome for accommodating the self-destruct strip. The screw is penetrated by a handle hole and is screwed together with a nut for positioning. At least one of the self-destruct strip and the screw should be elastic.

6. The destructible four-wing vaginal dilator according to any one of claims 1 and 4, characterized in that: When the screw rod and the nut of the first expansion and positioning device are screwed together and expanded to the maximum gear, the opening angle of the upper and lower wings can reach >40°.

7. The instant-destructible four-wing vaginal dilator according to claim 1, characterized in that The axle pin, the positioning connector axle pin and the side expansion piece corner axle pin are large at both ends and small 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 larger than the diameter of the open piece, and the whole is dumbbell-shaped.

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