WO2022063251A1

WO2022063251A1 - Four-wing vaginal dilator

Info

Publication number: WO2022063251A1
Application number: PCT/CN2021/120462
Authority: WO
Inventors: 许泓; 金丽; 吴丹; 顾倪浩; 杨思勤; 杨秉鑫; 何晓英; 李国静; 张屹立; 蒋继兰; 杨旖赛; 尤敏; 张琳娜
Original assignee: 中国福利会国际和平妇幼保健院
Priority date: 2020-09-25
Filing date: 2021-09-24
Publication date: 2022-03-31
Also published as: CN112022078A

Abstract

A four-wing vaginal dilator, comprising one upper dilation piece (01), the upper dilation piece (01) comprising one upper wing (01-1) and a pressing handle (01-2) that is integrated with the upper wing (01-1) and that extends backward along the tail end on one side of the upper wing (01-1); one lower dilation piece (02), the lower dilation piece (02) comprising one lower wing (02-1) and a holding handle (02-2) that is integrated with the lower wing (02-1) and that extends downward from a rear end of the lower wing (02-1), two sides of the rear ends of the upper wing (01-1) and the lower wing (02-1) being connected by means of pin shafts, and the pressing handle (01-2) and the holding handle (02-2) being meshed with one another by means of a dilation positioning device; and one positioning sleeve (03), the positioning sleeve (03) being rotatably connected to the rear end of the upper wing (01-1) and a side dilation piece (04); and the four-wing vaginal dilator further comprises a first dilation positioning device that consists of a hook and fastener dilation positioning self-destructing device (09), and a second dilation positioning device that consists of a second positioning hook (04-4) having a second handle (04-5) on a rear end of the side dilation piece (04) and a second positioning fastener (03-3) on an outer side of the positioning sleeve (03). The vaginal dilator has a simple structure, is convenient to operate, easy to fabricate, economical and practical, and safe and effective to use.

Description

A four-wing vaginal dilator

technical field

The invention relates to a vaginal dilator for obstetrics and gynecology medical instruments, in particular to a four-wing vaginal dilator.

Background technique

Vaginal dilator, referred to as dilator, also known as vaginal speculum, speculum, etc., is a commonly used inspection and surgical instrument in gynecology. Used to expose the examination site or surgical site. Through domestic and foreign literature search, the US Patent Office recorded the vaginal dilator with spiral fixed structure invented by American John L. Marco in 1949. A double-wing vaginal dilator requires at least 12 parts for inspection and at least for surgical type. 8 parts, the advantage is that the opening angle of the upper and lower wings is greater than 40 degrees during expansion, which can effectively dilate the vagina, expose the cervix and the posterior fornix, which is beneficial for inspection and surgery. Use is its defect; according to the records of the Chinese Patent Office, the patent number 891083928 (the abbreviation of double-winged vaginal dilator) was invented by Lin Jing from Wenzhou Medical University in my country in 1989, regardless of the type of examination or operation. All types have only 2 components to form a vaginal dilator, and functionally have all the above-mentioned advantages that a vaginal dilator invented by an American requires 12 components. Advantages such as making one-time use.

The double-wing vaginal dilator includes an upper wing and a lower wing that can be opened and closed in a duckbill shape. The positioning device on the dilator keeps the upper and lower wings open at a certain angle. Exam and surgery. Clinically, with the emergence and increase of some new diseases, and some patients with particularly obese and loose vagina, if a double-wing vaginal dilator with only upper and lower wings is used, when the upper and lower wings are opened, the upper and lower wings are opened. The vaginal wall between the two sides of the lower wing will backfill into the opened area, reducing exposure and making inspection or surgery difficult. 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 strategy.

US Patent Number: 6,024,696 discloses a "side wall supported speculum", namely a four-wing vaginal dilator, which has a complex structure, cumbersome and laborious operation, and high cost. A side wall supported four-wing speculum includes an upper wing and a Press the handle and the upper expansion piece of the upper handle, the upper handle and the upper wing are connected by a pin shaft, the upper wing is also provided with a smoke exhaust setter for placing the smoke exhaust pipe, and a lower wing including a lower wing and a second handle. The expansion piece, the handle and the second handle are fixed with screws and nuts, there are left and right expansion pieces between the upper and lower wings, and the rear of the left and right expansion pieces extends left and right into a left and right wing. There are pins protruding from the top to the front, and the pins pass through the two positioning grooves at the rear end of the lower wing. In addition, there are left and right screw holes above the handle for installing spring clips to hold the left and right expansion. The rear axon of the sheet is used to maintain the position of the left and right expansion sheets when they are erected. The defect is that such a complex structure cannot make the left and right expansion sheets expand outward, nor can the left and right expansion sheets be retracted inward! However, the left and right dilatators can only be "lying down" and "standing up" to support the vaginal sidewall, which will inevitably lead to a small space between the sidewalls, insufficient visual field and lack of practical value.

In addition, the international application PCT/AU98/00737 discloses a "speculum", which proposes a solution: a speculum includes a main body, which has two expansion fingers 14A, 14B whose proximal ends are connected to the main body, and another An expansion finger 28 extends between the fingers and is fixed to the body, and an actuator is pivotally connected to the body, the actuator is formed with an expansion finger 70 located between the fingers 14A, 14B opposite the fixed finger 28, when the When the actuator pivots, the finger immediately begins to rotate away from the remaining fingers, and after the actuator rotates through a certain angle, it begins to contact the interior of the fingers 14 near their proximal ends, causing the distal ends of those fingers to move away from each other, the fingers 14A, 14B are hinged about the tilting hinge axis so that when the actuator abuts them, they move in a combined upward and sideways movement. The disadvantages are also that the structure is too complicated, there are too many parts, and it is difficult to operate, and the side dilating sheet is arranged outside the upper and lower wings and cannot be recovered into the upper and lower wings, so it will bring pain to the patient when entering the vagina, etc. disadvantages.

In 2010, the State Intellectual Property Office of my country recorded the "Vaginal Dilator with Double Wings" first invented by the scientific research team such as Lin Jing and Zhang Xingxing in China. The Chinese invention patent authorization number is ZL201010227014.9. The solution can make the upper, lower, left and right wings of the dilator expand outwards and collapse inwards, and the left and right wings can be collapsed into the upper and lower wings. The four-wing speculum invented by the Chinese people cannot expand or fold the left and right wings outward, but the four-wing speculum invented by the Chinese is not only simple in structure and convenient in operation, especially the upper and lower expansion pieces can be adjusted according to clinical needs. The size can be effectively extended to the upper and lower walls of the vagina to the desired position, and the left and right dilating sheets can also be effectively extended to the desired position on the side wall of the vagina according to the size of the clinical needs. The four-wing speculum is put into the vagina and taken out from the vagina like a double-wing speculum with only the upper and lower wings. It is safe and effective to use.

Moreover, the above-mentioned four-wing speculum invented by Americans has as many as 20 parts, which is cumbersome and cumbersome, inconvenient to operate, and high in cost. The four-wing speculum invented by us, that is, the above-mentioned "Vaginal dilator with double wings", has a total of There are only 4 parts (upper expansion piece, lower expansion piece, positioning sleeve and side expansion piece), with few parts, simple operation, economical and practical, and the function far exceeds the four-wing speculum invented by foreigners such as the United States.

For the above invention, we have also applied for international patents in the United States and Europe, and have been authorized by the United States Patent Office with the patent number of US 8,876,711 B2EP and the European Patent Office, with the patent number of EP 2 586 486 B1.

So far, a common defect of the four-wing vaginal dilator at home and abroad is that there is only one handle at the rear end of the left and right dilating sheets and no second handle. It is upturned, so it is difficult to enter the second positioning buckle. Even if the second positioning hook is forced into the second positioning buckle, the second positioning hook cannot be disengaged from the positioning buckle and loses its practical value. The present invention is above the second positioning hook. The result is completely different when the second handle is added. By pinching the first handle and the second handle, the doctor can make the second positioning hook upturn and easily disengage or enter the second positioning buckle, which is easy to operate and adjust. , which is a fundamental change and improvement of the original defects of the known technology and has substantial significance and makes it practical.

In addition, the side expansion piece inserts of the known technology are all solid structures, which are quite inconvenient to install and rotate. Now they are designed as an open bushing structure, which is flexible and can be lightly and quickly installed. The third pivot pin of the positioning sleeve is used clinically. The rotation is particularly light, convenient and practical.

On the other hand, there are media reports that illegal elements are recycled and reused. For this reason, Chinese inventors Lin Jing and Zhang Xingxing first invented the "self-destructing disposable sterile vaginal dilator" in 2004 (the patent name is Instant Destruction Painless Noiseless disposable vaginal dilator, the patent authorization number is 200420116743.7), its principle is to set a "snap tape" on the non-stressed part of the dilator handle or the handle, and break the "snap tape" after use to achieve destruction. However, in practical applications, if the "instant destruction zone" is deep, it is easy to break during transportation, and if the "instant destruction zone" is shallow, it is difficult to break.

Therefore, it is necessary to further study the vaginal dilator to overcome the defects and make it better and more perfect.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a four-wing vaginal dilator that can overcome the defects of the prior art and provide a new gauge.

In order to achieve the above purpose, the technical solution of the present invention provides a four-wing vaginal dilator, which includes an upper expansion sheet, a lower expansion sheet, at least one side expansion sheet and a positioning sleeve, and the upper expansion sheet includes an upper wing and a pressing handle. , the lower expansion piece includes a lower wing and a handle, the two sides of the rear end of the upper wing and the lower wing are connected by a pin shaft, the handle and the handle can be engaged by a first expansion positioning device, the positioning sleeve and the upper expansion piece and It is rotatably connected to the side expansion piece, and is characterized in that the first expansion positioning device includes a hook buckle expansion positioning self-destruction device;

The side expansion piece includes a first handle at the rear end, a radially inward second positioning hook and a second handle on the front inner side of the first handle, an open shaft sleeve in front of the second positioning hook, and the open shaft sleeve The front part is the side wings, the first handle and the second handle are pinched towards each other to make the second positioning hook upturn on the second positioning buckle outside the positioning sleeve to move, so that the left and right side wings are horizontally opened outward. Reach >40 degrees and tuck in between the upper and lower wings.

The inner side of the two ends of the positioning sleeve is rotatably connected with the second shaft hole at the rear end of the upper wing through a second shaft pin, the outer sides of the two ends of the sleeve are provided with a second positioning button, and the front of the second positioning button is also provided with a second positioning button. The buckle is integrated and can receive the third shaft pin of the positioning sleeve of the side-wing opening bushing, and the second positioning hook with the second handle at the rear of the side-wing opening bushing is engaged with the second positioning buckle on the outside of the positioning sleeve to form a second expansion fixing device .

Preferably, a protrusion is also provided in the center of the outer side of the positioning sleeve, and a limit block is provided in the center of the inner side of the sleeve. The protrusion can be toggled up or down to adjust the upper and lower positions of the positioning sleeve together with the side wings and pass the limit block. to limit the downward rotation of the locating sleeves and wings.

The first expansion positioning device is a hook buckle expansion positioning self-destruction device. The hook buckle expansion positioning self-destruction device includes a positioning seat installed on the side hole of the handle and the inclined pad, and self-destruction is arranged in front and rear on the positioning seat. The bar and the positioning rod, the back of the rod is provided with a positioning hook that can be engaged with the positioning buckle at the end of the handle hole;

Preferably, at least one of the self-destruct strip and the positioning rod should have elasticity.

Preferably, the top end of the self-destructing strip extends forward to form a crown, which is shaped like a "7" in the transverse direction, and the crown is engaged with the protrusion located in front of the side hole of the handle.

Preferably, when the hooks expand and locate the self-destructing device, when the cooperation of the positioning hooks and the positioning buckles is expanded to the maximum speed, the opening angles of the upper and lower wings can reach >40 degrees, and the positions of the positioning hooks and the positioning buckles can be mutually matched. Change.

Preferably, the upper expansion sheet comprises: an upper wing, and a push handle integrated with the upper wing and extending backward along the rear end of one side of the upper wing, the push handle is provided with a push handle hole, and the end of the push handle hole is provided with a push handle. Locating buckle for engaging the locating hook.

Preferably, a limit groove is opened in the middle of the rear of the upper wing for connecting the limit block inside the positioning sleeve to limit the limit range of the downward rotation of the positioning sleeve and the side wing.

A shaft pin is arranged between the upper wing and the handle, and a second shaft hole for receiving the second shaft pin is arranged in front of the shaft pin.

The lower expansion piece comprises: a lower wing, and a handle integrated with the lower wing and extending downward from the rear end of the lower wing, a shaft hole is arranged between the lower wing and the handle, and a side hole of the handle and a handle are arranged on the handle. The inclined pad is provided at the end of the hole beside the handle.

Preferably, the side hole of the handle is set as a single layer or a double layer, the double layer is that the bottom layer is larger than the upper layer, the shape of the bottom layer is the same as that of the positioning seat, and there is a protrusion for the head crown to be fastened in front of it.

Preferably, the front middle part of the side wings is inwardly arcuate, and the front end of the front part is duckbill-shaped.

Preferably, the front ends of the flanks are substantially straight.

Preferably, the shaft pin is slightly larger at both ends, slightly smaller in the middle, solid in the middle and lower part, and open in the middle and upper part.

According to the four-wing vaginal dilator of the present invention, when in use, the left and right wings are put into the vagina in a closed state with the left and right wings folded between the upper and lower wings, and the handle and the pressing handle are controlled to open the upper and lower wings To the desired field of view, maintain the field of view through the first expansion and fixation structure, and then control the first handle and the second handle at the rear ends of the left and right wings in opposite directions. The second positioning hook is lifted up with the traction of the second handle, which is very convenient Move and engage with the second positioning buckle in the air, so that the left and right wings can be expanded and fixed according to the clinical needs. , microwave therapy, etc.

After the inspection and treatment, pinch the first handle and the second handle toward each other to release the engaging side expansion piece and the second expansion positioning device on the positioning sleeve, put the left and right wings into the upper and lower wings, and release the second expansion and positioning device on the positioning sleeve. With an expansion positioning device, the upper and lower wings are closed and folded, and the four-wing vaginal dilator can be taken out from the vagina at this time.

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

1. In the present invention, the second positioning buckle of the positioning sleeve, one of the key components, is designed ingeniously and simplified into a plane structure. On the one hand, the mold of this structure also becomes simple, and there is no need for "core pulling" during production, which is better than the positioning of the known technology. It is much simpler to "core-pull" the mounting hole on the seat during production, and the cost of the mold is also cheap, the installation by workers is also simple and fast, and the clinical use is much more convenient, and it also provides doctors with one more choice of quality standards.

2. In the present invention, a second handle is provided on the second positioning hook at the rear end of the side expansion piece, and a first handle is arranged at the rear end of the side expansion piece, which overcomes the disadvantage that the rear end of the side expansion piece has only one pipe joint in the known technology. The invention solves this problem by designing a second positioning hook with a second handle. As long as the first handle and the second handle are kneaded toward each other, the elastic second positioning hook must be upturned so that the second positioning hook is above the second positioning buckle. It can be moved and fixed in the air, so that the left and right wings can horizontally open outwards at an angle of >40 degrees and fold inwards between the upper and lower wings.

3. In the present invention, the first expansion positioning device is designed as a hook expansion positioning self-destructing device. The entire clinical operation process is completely consistent with the non-self-destructing dilator but achieves the purpose of self-destruction at the same time, and when the upper and lower wings are expanded, the two wings are The opening angle can reach > 40 degrees, which is a very important clinical technical indicator, which involves the safety and effectiveness of medical devices: the opening angles of the upper and lower wings and the left and right wings can reach > 40 degrees. First, it can effectively dilate the vagina, Expose the cervix and have a sufficient field of vision; the second is to achieve self-destruction at the same time during use, preventing cross-infection of iatrogenic diseases, and playing a role in protecting people's health and the safety and effectiveness of medical devices.

4. In the present invention, the shaft sleeve on the side expansion sheet is also designed as an elastic open shaft sleeve, which is very beneficial to install the second shaft pin of the positioning sleeve, and it is easy, flexible and practical to rotate during clinical use. ,

5. Fewer parts and low cost. A new product of the four-wing vaginal dilator specially used for inspection has been added. It is an ideal device for clinical inspection, sampling, and physical therapy.

The above-mentioned and other objects and advantages of a four-winged vaginal dilator according to the present invention will become clearer from the following detailed description of the embodiments shown in the accompanying drawings, which include:

Description of drawings

1 is a schematic diagram of the closed state when the vaginal dilator has not been used and when it enters the vagina;

Fig. 2 is the schematic diagram of expansion state when this vaginal dilator is used;

Figure 3 is a schematic diagram of the closed state after the vaginal dilator is used;

Fig. 4 is the schematic diagram of the dilation sheet on the vaginal dilator;

Fig. 5 is the schematic diagram of the expansion sheet under the vaginal dilator;

Figure 6 is a schematic diagram of a vaginal dilator positioning sleeve;

Fig. 7 is a schematic diagram of the side dilation sheet of the vaginal dilator;

FIG. 8 is a schematic structural diagram of a self-destructing device for expanding and positioning a vaginal dilator.

detailed description

A four-wing vaginal dilator according to the present invention will be described below with reference to the accompanying drawings. Referring first to the accompanying drawings 1-5, a four-wing vaginal dilator includes an upper expansion sheet 01, the upper expansion sheet 01 contains an upper wing 01-1, and a The push handle 01-2 with its end extending downwards has a shaft pin 01-3 on the left and right sides of the inner surface of the rear end of the upper wing, and a second shaft hole 01-4 in front of the shaft pin 01-3. The shaft hole 01-4 is rotatably connected with the second shaft pin 03-21, the handle 01-2 is also provided with a handle hole 01-8, a handle hole 01-8, and a The positioning buckle 01-9 engaged by the positioning hook; a lower expansion piece 02, the lower expansion piece 02 contains a lower wing 02-1, one is integral with the lower wing 02-1, and forms a close to right angle along the lower wing 02-1 The handle 02-2 extends downward in the direction. The handle is provided with a handle side hole 02-8, a protrusion 02-7 and an inclined pad 02-9. The inclined pad 02-9 is located at the bottom of the handle side hole 02-8. At the rear end, a shaft hole 02-3 is arranged between the lower wing and the handle, the protrusion 02-7 is arranged in front of the side hole 02-8 of the handle, and the two sides of the rear end of the upper wing 01-1 and the lower wing 02-1 are respectively Connected with pins, therefore, the upper wing 01-1 and the lower wing 02-1 can be opened and closed by controlling the handle 01-2;

Please refer to Figures 1-3 and 8, a first expansion positioning device for fixing the open state of the upper wing 01-1 and the lower wing 02-1 is the hook expansion positioning self-destructing device 09, which will position the The function is cleverly combined with the function of automatically destroying the dilator before taking out the dilator after use. The device further includes a positioning seat 09-12 installed in the side hole 02-8 of the handle and the inclined pad 02-9. The positioning seat 09 -12 extends upward into an arc-shaped positioning rod 09-13 and a self-destruction bar 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, and the back of the positioning rod 09-13 is provided with a positioning rod Hook 09-14, the positioning hook 09-14 passes through the handle hole 01-8 and engages with the positioning buckle 01-9 at the end, and the doctor can quickly fix, adjust and fix according to the size of the surgical scope.

Continue to refer to Figure 8, the self-destruction strip 09-16 is a shorter and smaller strip with an overall slightly forward inclination, and the front is close to the front wall of the side hole 02-8 of the handle, because the self-destruction strip 09-16 The front and rear tension of the positioning rod 09-13 makes the positioning seat 09-12 more firmly fixed in the side hole 02-8 of the handle and the inclined pad 02-9. When the doctor pushes the push handle 09-18 after use, the self-destruction bar 09-16 is forced by the push handle 09-18 together with the positioning rod 09-13, and its abdomen is squeezed by the front wall of the side hole 02-8 of the handle Immediate "fracture" fracture caused by pressure, coupled with the lever action of positioning rod 09-13 through positioning seat 09-12 and inclined pad 02-9, the impact force when positioning seat 09-12 slipped, resulting in self-destruction bar 09-16 immediately The "fracture" breaks, so the self-destruction bar 09-16 "fracture" breaks almost at the same time as the positioning seat 09-12 slips out of the side hole 02-8 of the handle and the inclined pad 02-9, because the positioning seat 09-12 The locating rod 09-13 is out of position, and the locating rod 09-13 can no longer be expanded and positioned with the locating buckle 01-9. All this happened and completed in an instant, and the self-destruction bar 09- 16 The broken parts are almost all at the root, which looks like a "fracture", so even if the self-destruction bar 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 also connected to the positioning seat 09-12 and will not fall off alone, so when the doctor takes it out, it is still a whole dilator, just like a disposable vaginal dilator without an instant destruction device, so the operation is simple and labor-saving, convenient and practical, safe and effective. .

Please continue to refer to Figures 1-3 and 8, according to another preferred embodiment of the present invention, the head end of the self-destructing strip 09-16 extends forward to form a head crown 09-17, so that the self-destructing strip with the head crown 09-17 09-16 The horizontal shape is like a "7" shape, correspondingly, it just fits with the protrusion 02-7 in front of the side hole 02-8 of the handle. This self-destructing strip with a crown 09-17 design09-16 When squeezed by the front wall of the side hole 02-8 of the handle, it is more likely to break and self-destruct, and when the self-destruction strip 09-16 with the head crown 09-17 is squeezed and broken, the "fracture" fracture usually still remains. At the root, the operation is also time-saving and labor-saving, simple and convenient, safe and effective.

Continuing to refer to Figures 1-5, the first expansion positioning device 09 is designed on one side of the handle 01-2 and the handle 02-2, which brings the advantages of expanding the field of view and space of the entire expander. When the lower wings are expanded, the opening angle of the upper and lower wings can reach >40°, which is very beneficial to various operations and various examinations in obstetrics and gynecology, because >40° can fully expose the vagina and cervix, and can effectively protect the vaginal opening. Divided expansion, making clinical use more favorable for diagnosis and treatment and surgery, and safer and more effective.

Continue to refer to Figure 1, before the clinical use, the upper wing 01-1 and the lower wing 02-1 and the left and right wings 04-10 are in a closed state. When the clinical use begins, the doctor puts the dilator into the vagina, and the upper wing 01- 1 and the lower wing 02-1 and the left and right wings 04-10 are still closed. At this time, it can be seen that the self-destruction bar 09-16 and the crown 09-17 are intact.

Continue to refer to Fig. 2, when in clinical use, 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 Fixed, the left and right wings 04-10 were also expanded to the required positions, and the doctor began to examine and diagnose. At this time, the self-destruction bar 09-16 was also intact.

Please refer to FIG. 3, according to a preferred embodiment, after the inspection, the doctor kneads the first handle 04-8 and the second handle 04-5, at this time the second handle 04-5 will pull the positioning hook and use its elastic effect to be light and light Disengage the second positioning buckle 03-5, and take advantage of the situation to easily retract the side wings 04-10 between the upper and lower wings; at this time, the doctor pushes the push handle 09-15 forward, due to the thrust and elasticity of the positioning rod 09-13. , so that the self-destruction strip 09-16 or the head crown 09-17 is squeezed by the front wall protruding slightly backward from the upper middle of the handle side hole 02-8, and the self-destruction strip 09-16 or the head crown 09-17 will happen immediately" "Fracture" is broken and cannot be recovered, the positioning hook 09-14 is naturally separated from the positioning buckle 01-9, the upper and lower wings are automatically closed, and the doctor can take out the speculum.

Referring to FIG. 5, according to a preferred embodiment of the present invention, on the outer side of the middle of the handle 02-2, a position corresponding to the handle hole 01-8 is provided with a double-layer handle side hole 02-8, the bottom layer is larger than the upper layer, and the hole There is an inclined pad 02-9 at the rear end of the bottom layer. This kind of design that pays attention to details can make the bottom layer have a larger space than the upper layer, which is convenient for installation.

According to another embodiment of the present invention, the bottom layer of the side hole 02-8 of the handle is designed in the shape of a gourd, and the positioning seat 09-12 in the shape of a gourd that matches the shape of the bottom layer can be more firmly installed in the side hole 02 of the handle In the bottom layer of -8, it 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 is thick in the front and thin in the back, making the positioning Under the action of the forward thrust of the push handle 09-18, the seat 09-12 is transmitted by the positioning rod 09-13 and under the lever action of the inclined pad 02-9, so that the positioning seat 09-12 can be easily removed from the side hole of the handle 02-8 and the slant pad 02-9 slip out and the positioning rod 09-13 is out of position, and can no longer be tightly screwed with the positioning buckle 01-9, thus losing the functions of expansion and positioning. It can not be recovered, so it can only be used once and achieve the purpose of preventing cross-infection of iatrogenic diseases.

Referring to FIG. 6, according to a preferred embodiment of the present invention, the positioning sleeve 03 is 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 side of both ends of the sleeve 03-1. Rotate up and down, there is also a protrusion in the center of the outer side of the positioning sleeve 03, and the protrusion can be toggled up or down to adjust the upper and lower positions of the side wings and limit the downward rotation of the positioning sleeve and the side wings through the limit block. Scope.

Continuing to refer to FIG. 6 , the outer sides of the two ends of the positioning sleeve 03 are respectively provided with second positioning buckles 03 - 3 , and the front of the second positioning buckle is also provided with a positioning sleeve third shaft pin that is integrated with the second positioning buckle and can receive the flank opening bushings. 03-4, the second positioning hook 04-4 with the second handle at the rear of the side wing opening bushing engages with the second positioning buckle 03-3 outside the positioning sleeve to form a second expansion fixing device.

Referring to FIG. 7 , according to an embodiment of the present invention, the structure of the side expansion sheet 04 is very simple, and from front to back are: side wings 04-10, open bushings 04-3, second positioning hooks 04-4 and the first The second handle 04-5 and the first handle 04-8 at the back end are especially suitable for non-surgical screening of precancerous lesions or examination and sampling of patients with vaginal mucosal prolapse, microwave, laser and other physical therapy. , so that the upper, lower, left and right of the vagina can be effectively expanded, and the cervix is completely exposed, which is conducive to diagnosis and treatment.

The present invention is precisely because of the above-mentioned first expansion positioning device and second expansion positioning device, the doctor can not only adjust the upper, lower, left and right wings to the upper and lower walls of the vagina and the left and right side walls according to the needs of clinical patients. Effectively expand to the required position. After inspection or treatment, first retract the left and right wings 04-10 inwards to the upper and lower wings (01-1, 02-1), and finally the upper and lower wings (01-1, 02- 1) Recover and close, and at the same time, the expander achieves self-destruction during operation, killing two birds with one stone.

The whole four-wing expander of the present invention has only 4 parts in total (upper expansion piece, lower expansion piece, positioning sleeve and side expansion piece), avoiding more than 20 parts designed by foreigners. Compared to bringing pain to patients and complicated and cumbersome operations to doctors, the components of the present invention have been simplified to the extreme, so the operation is very simple and economical and practical.

When expanding, the upper and lower wings are expanded and fixed upward and downward through the first expansion positioning device, the maximum opening angle of the upper and lower wings reaches >40 degrees, and the left and right wings are expanded left and right through the second expansion positioning device to The position and fixation required by the clinic are very suitable for the clinical inspection field. This very ingenious and scientific design maximizes exposure of the vagina and cervix, maximizes the expansion of the doctor's field of vision, and maximizes the satisfaction of clinical needs, especially for cervical cancer. It can be used for the census work of pre-lesion and patients with vaginal mucosal prolapse, and has the advantages of simple structure, convenient operation, safety and effectiveness.

According to a preferred embodiment, the shaft pins of the present invention are both large at both ends, small in the middle, solid in the middle and lower parts, and elastic in the middle and upper parts. , not only easy to assemble, but also easy to rotate during clinical use, flexible and free, which improves the work efficiency of doctors.

The applicant has described the concept and embodiments of the present invention in detail, and those skilled in the art can make various changes and improvements on this basis, but if these changes and improvements do not depart from the spirit of the present invention, they are all within the scope of the present invention. within the scope of protection defined by the claims.

Claims

A four-wing vaginal dilator, comprising an upper expansion piece, the upper expansion piece comprising an upper wing, a push handle integral with the upper wing and extending backward along one end of the upper wing, a lower expansion piece, and a lower expansion piece It includes a lower wing, and a handle integrated with the lower wing and extending downward from the rear end of the lower wing, the two sides of the rear end of the upper wing and the lower wing are connected by a pin shaft, and the handle and the handle are engaged by an expansion positioning device, A positioning sleeve, the positioning sleeve is rotatably connected with the rear end of the upper wing and the side expansion sheet respectively, and it is characterized in that, the four-wing vaginal dilator further comprises a first expansion positioning device composed of a hook buckle expansion positioning self-destruction device,

The side expansion piece includes a first handle at the rear end, a radially inward second positioning hook and a second handle on the front inner side of the first handle, an open shaft sleeve in front of the second positioning hook, and the open shaft sleeve The front part is the side wings, the first handle and the second handle are pinched towards each other to make the second positioning hook upturn on the second positioning buckle outside the positioning sleeve to move, so that the left and right side wings are horizontally opened outward. Reach >40 degrees and tuck in between the upper and lower wings,

The inner side of the two ends of the positioning sleeve is rotatably connected with the second shaft hole at the rear end of the upper wing through a second shaft pin, the outer sides of the two ends of the sleeve are provided with a second positioning button, and the front of the second positioning button is also provided with a second positioning button. The buckle is integrated and can receive the third shaft pin of the positioning sleeve of the side-wing opening bushing, and the second positioning hook with the second handle at the rear of the side-wing opening bushing is engaged with the second positioning buckle on the outside of the positioning sleeve to form a second expansion fixing device .
A four-wing vaginal dilator according to claim 1, characterized in that, a protrusion is also provided in the center of the outer side of the positioning sleeve, and a limit block is provided in the center of the inner side of the sleeve. The upper and lower positions of the positioning sleeve together with the side wings and the limit range of downward rotation of the positioning sleeve and the side wings are limited by the limit block.
A four-wing vaginal dilator according to claim 1, wherein the first expansion positioning device is a hook buckle expansion positioning self-destruction device, and the hook buckle expansion positioning self-destruction device comprises a hook installed next to the handle The positioning seat on the hole and the inclined pad is arranged with self-destruction strips and positioning rods in the front and rear of the positioning seat. The back of the rod is provided with a positioning hook that can be engaged with the positioning buckle at the end of the handle hole. The self-destruction strip and positioning rod are at least One piece should be flexible.
A four-wing vaginal dilator according to claim 3, wherein the top of the self-destructing strip extends forward to form a crown, which is shaped like a "7" in the transverse direction. The front protrusions snap together.
A four-wing vaginal dilator according to claims 1 and 3, characterized in that, when the hook buckle expansion positioning self-destruction device positioning hook and the positioning buckle cooperate to expand to the maximum level, the upper and lower wings can be opened at an opening angle. Can reach >40 degrees, and the position of the positioning hook and positioning buckle can be interchanged.
A four-wing vaginal dilator according to claim 1, wherein the upper expansion sheet comprises: an upper wing, and a push handle integral with the upper wing and extending backward along the rear end of one side of the upper wing, pressing There is a handle hole on the handle, a positioning buckle for the positioning hook to engage at the end of the handle hole, and a limit groove for connecting the inner limit block of the positioning sleeve in the middle of the rear of the upper wing to limit the positioning sleeve and the side wings. In the limit range of downward rotation, a shaft pin is arranged between the upper wing and the handle, and a second shaft hole that can receive the second shaft pin is arranged in front of the shaft pin;

The lower expansion piece comprises: a lower wing, and a handle integrated with the lower wing and extending downward from the rear end of the lower wing, a shaft hole is arranged between the lower wing and the handle, and a side hole of the handle and a handle are arranged on the handle. The inclined pad is provided at the end of the hole beside the handle.
A four-wing vaginal dilator according to claim 6, characterized in that the side hole of the handle is set as a single layer or a double layer, the double layer is that the bottom layer is larger than the upper layer, and the shape of the bottom layer is consistent with the positioning seat.
A four-wing vaginal dilator according to claim 1, characterized in that the front middle part of the side wings is inwardly arcuate, and the front end of the front part is duckbill-shaped.
A four-wing vaginal dilator according to claim 1, wherein the front ends of the side wings are substantially straight.
A four-wing vaginal dilator according to claim 1, characterized in that the shaft pin is slightly larger at both ends, slightly smaller in the middle, solid in the middle and lower part, and open in the middle and upper part, and the diameter of the edge of the opening is slightly larger than the diameter of the opening , the overall shape of a dumbbell.