CN112022078A

CN112022078A - Four-wing vaginal dilator

Info

Publication number: CN112022078A
Application number: CN202011020141.1A
Authority: CN
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: International Peace Maternity & Child Health Hospital Of China Welfare Institute
Current assignee: International Peace Maternity & Child Health Hospital Of China Welfare Institute
Priority date: 2020-09-25
Filing date: 2020-09-25
Publication date: 2020-12-04
Also published as: WO2022063251A1

Abstract

The invention provides a four-wing vaginal dilator, which comprises an upper dilating sheet, a pressing handle, a lower dilating sheet, a holding handle, a first dilating positioning device and a second dilating positioning device, wherein the pressing handle is integrated with the upper wing and extends backwards along the tail end of one side of the upper wing, the lower dilating sheet comprises a lower wing and a holding handle which is integrated with the lower wing and extends downwards from the rear end of the lower wing, the two sides of the rear ends of the upper wing and the lower wing are connected through a pin shaft, the pressing handle and the holding handle are meshed through a dilating positioning device, the positioning sleeve is respectively and rotatably connected with the rear end of the upper wing and the side dilating sheet, the four-wing vaginal dilator further comprises a first dilating positioning device consisting of a hook dilating positioning self-destroying device, and a second dilating positioning device consisting of a second positioning hook with a second handle at the rear end of the side dilating sheet and a second positioning buckle outside the positioning sleeve. The vaginal dilator has the advantages of simple structure, convenient operation, easy manufacture, economy, practicality, safe and effective use.

Description

Four-wing vaginal dilator

Technical Field

The invention relates to a vaginal dilator of a medical instrument of an obstetrics and gynecology department, in particular to a four-wing vaginal dilator.

Background

The vaginal dilator, also called vaginal speculum, etc., is a common examination and operation instrument for gynecology. For exposing the examination or surgical site. Through domestic and foreign literature retrieval, the U.S. patent office records that the vaginal dilator with the spiral fixed structure invented by Americans John L.Marco in 1949, one double-wing vaginal dilator needs 12 parts at least for examination and 8 parts at least for operation, and has the advantages that the opening angle of the upper wing and the lower wing is more than 40 degrees during expansion, the vagina can be effectively expanded, the cervix and the posterior fornix are exposed, the examination and the operation are facilitated, the number of parts is large, the operation is complicated and time-consuming, the manufacturing cost is high, and the defect that the vaginal dilator is not suitable for being manufactured and used once is overcome; according to the record of the Chinese patent office, the vagina dilator with the patent authorization number of 891083928 (which is the abbreviation of a double-wing vagina dilator) invented by the Linjing teacher of the Wenzhou medical university in 1989 in China, only 2 parts are required to form one vagina dilator no matter in an examination type or an operation type, and the vagina dilator functionally has all the advantages of 12 parts required by one vagina dilator invented by Americans.

The double-wing vaginal dilator comprises an upper wing and a lower wing which can be opened and closed and are in a duckbill shape, the upper wing and the lower wing are kept to be opened at a certain angle through a positioning device on the dilator, and a doctor observes, inspects and performs an operation through the opened visual field range of the upper wing and the lower wing. With the clinical appearance and increase of new diseases and the occurrence of patients with special obesity and loose vagina, if a double-wing vaginal dilator with only upper and lower wings is used, after the upper and lower wings are opened, the vaginal wall between the two sides of the upper wing and the lower wing is backfilled into the opened area, thereby reducing the exposure range and bringing difficulty to examination or operation. If the opening height of the upper wing and the lower wing is increased, the backfill is increased besides the pain of the patient, so that the method is not a good countermeasure.

U.S. Patent Number: 6,024,696 discloses a lateral wall supporting speculum, namely a four-wing vaginal dilator, with complex structure, complex operation, labor and high cost, a lateral wall supporting four-wing speculum includes an upper expansion sheet including an upper wing, a press handle and an upper handle, the upper handle is connected with the upper wing through a pin shaft, the upper wing is also provided with a smoke discharge setting device for placing a smoke discharge pipe, and a lower expansion sheet including a lower wing and a second handle, the handles are fixed with the second handle through screw nuts, a left expansion sheet and a right expansion sheet are arranged between the upper wing and the lower wing, the rear parts of the left expansion sheet and the right expansion sheet extend leftwards and rightwards to be a left winglet and a right winglet, pins respectively extend forwards and backwards above the winglets, the pins pass through a front positioning groove and a rear groove arranged at the rear end of the lower wing, in addition, a left mounting screw hole and a right mounting screw hole above the handles are provided for mounting spring pressing sheets to press rear axons of the left expansion sheet and the right expansion sheet to keep, the defect is that the complicated structure can not cause the left and right expansion pieces to expand outwards and can not cause the left and right expansion pieces to recover inwards! But only the left and right expansion pieces can be laid down and erected to support the vaginal side wall, which results in small space between the side walls and insufficient visual field and lack of practical value.

In addition, international application PCT/AU98/00737 discloses a "speculum", which proposes a solution: a speculum comprises a body having two spreading fingers 14A, 14B connected at their proximal ends to the body, between which fingers another spreading finger 28 extends and is fixed, an actuator being pivotally connected to the body, the actuator being formed with a spreading finger 70 opposite the fixed finger 28 between the fingers 14A, 14B, which finger starts to rotate away from the remaining fingers as soon as the actuator is pivoted, after the actuator has been turned through a certain angle, comes into contact with the inside of the fingers 14 near their proximal ends, moving the distal ends of those fingers apart from each other, the fingers 14A, 14B being hinged about oblique hinge axes so that when the actuator abuts them they move in a combined motion upwards and sideways. The defect is that the structure is too complex, the parts are too many and are difficult to operate, and the side expansion pieces are arranged outside the upper wing and the lower wing and cannot be recovered into the upper wing and the lower wing, so that the side expansion pieces can bring pains to patients when entering the vagina.

In 2010, the intellectual property office of China records a vaginal dilator with double side wings, which is originally invented by scientific research teams in China, such as forest, Zhang Xingxing and the like, the patent of the Chinese invention is granted as ZL201010227014.9, the invention is originally proposed and solved at home and abroad, the upper, the lower, the left and the right four wings of the dilator can be expanded outwards and can be folded inwards, the left and the right wings can be folded into the upper and the lower wings, while the left and the right wings of the four-wing speculum invented by the inventor of other countries at home and abroad can not be expanded outwards or folded inwards, the four-wing speculum invented by Chinese people has simple structure and convenient operation, particularly, the upper and the lower expansion pieces can be effectively expanded to the required positions towards the upper and the lower walls of the vagina according to the size of clinical requirements, the left and the right expansion pieces can also be effectively expanded to the required positions towards the side walls of the vagina according to the size of the clinical requirements, after examination or diagnosis and treatment are finished, The right expansion piece can be folded inwards between the upper wing and the lower wing, the upper wing and the lower wing are also recovered and closed, and the four-wing speculum is put into the vagina and taken out of the vagina just like a double-wing speculum with only the upper wing and the lower wing, so that the use is safe and effective.

The four-wing speculum invented by Americans has the advantages of more than 20 parts, complexity, heaviness, inconvenience in operation and high manufacturing cost, and the four-wing speculum invented by us, namely the vaginal dilator with double side wings, has only 4 parts (an upper dilating sheet, a lower dilating sheet, a positioning sleeve and a side dilating sheet) in total, has few parts, is simple to operate, is economical and practical, and has functions far exceeding those of the four-wing specula invented by Americans and other foreigners.

The invention also applies for international patents such as the United states and Europe, and has been granted by the United states patent office with the patent number of US 8,876,711B 2EP and the European patent office with the patent number of EP 2586486B 1.

So far, the common defect of the four-wing vaginal dilator at home and abroad is that only one handle is arranged at the rear end of the left and right dilating blades without a second handle, and the fact that the second positioning hook cannot be upwarped only by the first handle is found in clinical operation, so that the second positioning hook cannot enter the second positioning buckle, even if the second positioning hook is forcibly forced to enter the second positioning buckle, the second positioning hook cannot be separated from the positioning buckle and loses practical value.

In addition, the side expansion piece insertion piece in the prior art is of a solid structure, is quite inconvenient to install and rotate, is designed into an open shaft sleeve structure at present and is rich in elasticity, the third shaft pin of the positioning sleeve can be lightly and rapidly installed in the opening shaft sleeve structure, and the rotation is particularly light, convenient and practical during clinical use.

On the other hand, media report that lawbreakers are recycled and reused, for the inventor in China, forest silence and Zhangxing created a self-destruction disposable aseptic vaginal dilator in 2004 (the patent name is an instant-destruction painless noiseless disposable vaginal dilator, the patent authorization number is 200420116743.7), the principle is that an 'instant-destruction belt' is arranged at the non-stressed part of a dilator handle or a press handle, the 'instant-destruction belt' is broken after use to realize destruction, the aim of non-reuse is achieved, however, in practical application, the 'instant-destruction belt' is easy to break in transportation, and the 'instant-destruction belt' is shallow and is difficult to break.

Therefore, further research on vaginal dilators is needed to overcome the defects and make them better and more complete.

Disclosure of Invention

The invention aims to provide a four-wing vaginal dilator which can overcome the defects of the prior art and provide a new standard.

In order to achieve the purpose, the four-wing vaginal dilator provided by the technical scheme of the invention comprises an upper dilator, a lower dilator, at least one side dilator and a positioning sleeve, wherein the upper dilator comprises an upper wing and a pressing handle, the lower dilator comprises a lower wing and a holding handle, two sides of the rear ends of the upper wing and the lower wing are connected through a pin shaft, the pressing handle and the holding handle can be meshed through a first dilation positioning device, and the positioning sleeve is rotatably connected with the upper dilator and the side dilator;

the side expansion piece comprises a first handle at the tail end of the rear part, a second positioning hook which is inward in the radial direction and a second handle arranged on the second positioning hook are arranged on the inner side in front of the first handle, an opening shaft sleeve is arranged in front of the second positioning hook, the front part of the opening shaft sleeve is a side wing, the first handle and the second handle are kneaded in opposite directions, so that the second positioning hook is upwards warped on a second positioning buckle on the outer side of the positioning sleeve to move, and the left side wing and the right side wing are outwards horizontally opened at an angle of more than 40 degrees and inwards folded between the upper wing and the lower wing.

The inner sides of two ends of the positioning sleeve are rotatably connected with a second shaft hole at the rear end of the upper wing through a second shaft pin, the outer sides of two ends of the positioning sleeve are provided with second positioning buckles, a third shaft pin of the positioning sleeve which is integrated with the second positioning buckle and can receive the shaft sleeve with the side wing opening is further arranged in front of the second positioning buckle, and a second positioning hook with a second handle at the rear part of the shaft sleeve with the side wing opening is meshed with the second positioning buckle at the outer side of the positioning sleeve to form a second expansion fixing device.

Preferably, a convex protrusion is further arranged in the center of the outer side of the positioning sleeve, a limiting block is arranged in the center of the inner side of the positioning sleeve, the convex protrusion is shifted upwards or downwards, the upper and lower positions of the positioning sleeve and the side wing can be adjusted, and the limiting range of the downward rotation of the positioning sleeve and the side wing is limited by the limiting block.

The first expansion positioning device is a hook buckle expansion positioning self-destruction device, the hook buckle expansion positioning self-destruction device comprises a positioning seat arranged on a side hole of the handle and an inclined pad, self-destruction strips and positioning rods are arranged on the positioning seat in the front and at the back, and the back of each rod is provided with a positioning hook which can be meshed with the positioning buckle at the tail end of the handle hole;

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

Preferably, the top end of the self-destruction strip extends forwards to form a crown, the crown is shaped like a 7 in the transverse direction, and the crown is buckled with a convex protrusion positioned in front of the side hole of the handle.

Preferably, when the hook expansion positioning self-destruction device positioning hook and the positioning buckle are matched and expanded to the maximum gear, the opening angle of the upper wing and the lower wing can reach more than 40 degrees, and the positions of the positioning hook and the positioning buckle can be interchanged.

Preferably, the upper expansion piece comprises: the upper wing and the pressing handle are integrated with the upper wing and extend backwards along the rear end of one side of the upper wing, a pressing handle hole is arranged on the pressing handle, and a positioning buckle for meshing the positioning hook is arranged at the tail end of the pressing handle hole.

Preferably, the middle of the rear part of the upper wing is provided with a limit groove for the connection of the inner limit block of the positioning sleeve, so as 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 pressing handle, and a second shaft hole capable of receiving a second shaft pin is arranged in front of the shaft pin.

The lower expansion sheet comprises: the lower wing and a grab handle which is integrated with the lower wing and extends downwards from the rear end of the lower wing, a shaft hole is arranged between the lower wing and the pressing handle, a grab handle side hole and an inclined pad are arranged on the grab handle, and the inclined pad is arranged at the tail end of the grab handle side hole.

Preferably, the side hole of the grab handle is arranged into 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 consistent with that of the positioning seat, and a convex protrusion for buckling the head crown is arranged in front of the bottom layer.

Preferably, the front middle part of the side wing is inwards cambered, and the front end of the front part is duckbilled.

Preferably, the front ends of the side wings are substantially straight.

Preferably, the shaft pin is slightly larger at two ends, slightly smaller in the middle, solid at the middle lower part, and split at the middle upper part, the edge diameter of the split is slightly larger than that of the split, and the whole dumbbell-shaped shaft pin is similar to the dumbbell-shaped shaft pin.

When the four-wing vaginal dilator is used, the left wing and the right wing are folded between the upper wing and the lower wing and are placed into a vagina in a closed state, the grab handle and the press handle are controlled to open the upper wing and the lower wing to a required visual field, the visual field range is kept through the first expansion fixing structure, then the first handle and the second handle at the rear ends of the left wing and the right wing are controlled oppositely, the second positioning hook is upwards tilted along with the traction of the second handle, the second positioning hook is very convenient to suspend above and move and be meshed with the second positioning hook, the left wing and the right wing are expanded and fixed according to clinical requirements, and at the moment, the vagina, the cervix or laser, microwave treatment and the like can be observed and inspected through the expanded visual fields of the upper wing, the lower wing, the left wing and the right wing.

After the examination and treatment are finished, the first handle and the second handle are kneaded in opposite directions, the second expansion positioning device on the meshing side expansion sheet and the positioning sleeve can be loosened, the left wing and the right wing are contained in the upper wing and the lower wing, the first expansion positioning device is released, the upper wing and the lower wing are closed and folded, and at the moment, the four-wing vaginal dilator can be taken out from the vagina.

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

1. the second positioning buckle of the positioning sleeve, one of the key components, is ingeniously and simply designed into a plane structure, on one hand, the structure is simple, core pulling is not needed during production, the core pulling is simpler than that needed during production of the mounting hole in the positioning seat in the prior art, the manufacturing cost of the mold is low, the installation of workers is simple and quick, clinical use is more convenient, and a product gauge is provided for doctors to select.

2. The second positioning hook with the second handle is designed to solve the problem as long as the first handle and the second handle are kneaded in opposite directions, the elastic second positioning hook is inevitably upwarped to enable the second positioning hook to suspend and move above the second positioning buckle, so that the outward horizontal opening angle of the left and right side wings can reach more than 40 degrees and the left and right side wings can be inwards folded to the space between the upper and lower wings.

3. The first expansion positioning device is designed into a hook buckle expansion positioning self-destruction device, the whole clinical operation process is completely consistent with that of a non-self-destruction dilator, but the self-destruction is realized at the same time, and the opening angles of the two wings can reach more than 40 degrees when the upper wing and the lower wing are expanded, which is a very important clinical technical index and relates to the safety and the effectiveness of medical appliances: the opening angles of the upper wing, the lower wing and the left wing and the right wing can reach more than 40 degrees, so that the vagina can be effectively expanded, the cervix can be exposed, and a sufficient visual field is provided; secondly, self-destruction is realized during the use process, cross infection of iatrogenic diseases is avoided, and the functions of protecting the health of people and ensuring the safety and effectiveness of medical appliances are achieved.

4. The invention also designs the shaft sleeve on the side expansion piece into an elastic opening shaft sleeve, thus being very beneficial to installing the second shaft pin of the positioning sleeve in the shaft sleeve, and having easy, flexible and better practicability when rotating in clinical use,

5. the four-wing vaginal dilator has the advantages of few parts and low cost, adds a new standard specially used for examination, and is an ideal instrument for clinical examination, sampling, physical therapy and the like.

The above and other objects and advantages of a four-wing vaginal dilator in accordance with the present invention will become more apparent from the following detailed description of the embodiments thereof taken in conjunction with the accompanying drawings in which:

drawings

FIG. 1 is a schematic view of the present vaginal dilator in a closed position, when not in use, and when entering the vagina;

FIG. 2 is a schematic view of the vaginal dilator in an expanded state;

FIG. 3 is a schematic view of the vaginal dilator in a closed state after use;

FIG. 4 is a schematic view of the upper dilator sheet of the vaginal dilator;

FIG. 5 is a schematic view of the lower expansion plate of the vaginal dilator;

FIG. 6 is a schematic view of the positioning sleeve of the vaginal dilator;

FIG. 7 is a schematic view of a lateral expansion sheet of the vaginal dilator;

fig. 8 is a structural schematic view of the dilation positioning self-destruction device of the vaginal dilator.

Detailed Description

A four-wing vaginal dilator in accordance with the present invention is described below with reference to the accompanying drawings. Referring to the attached drawings 1-5, the four-wing vaginal dilator comprises an upper dilating plate 01, wherein the upper dilating plate 01 comprises an upper wing 01-1 and a pressing handle 01-2 which is integrated with the upper wing 01-1 and extends downwards along the rear end of one side of the upper wing, shaft pins 01-3 are arranged on the left side and the right side of the inner surface of the rear end of the upper wing, a second shaft hole 01-4 is also arranged in front of the shaft pins 01-3, the second shaft hole 01-4 is rotatably connected with a second shaft pin 03-21, a pressing handle hole 01-8 and a pressing handle hole 01-8 are also arranged on the pressing handle 01-2, and a positioning buckle 01-9 for meshing a positioning hook is arranged at the tail end of the pressing handle hole; a lower expansion piece 02, the lower expansion piece 02 comprises a lower wing 02-1, a grab handle 02-2 which is integrated with the lower wing 02-1 and extends downwards along the direction which is close to the right angle of the lower wing 02-1, the grab handle is provided with a grab handle side hole 02-8, a convex protrusion 02-7 and an inclined pad 02-9, the inclined pad 02-9 is arranged at the rear end of the bottom layer of the grab handle side hole 02-8, a shaft hole 02-3 is arranged between the lower wing and the grab handle, the convex protrusion 02-7 is arranged in front of the side handle side hole 02-8, and the two sides of the rear end of the upper wing 01-1 and the rear end of the lower wing 02-1 are respectively connected by a pin shaft, therefore, the upper wing 01-1 and the lower wing 02-1 can be opened and closed by controlling the press handle 01-2;

referring to the attached drawings 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 a hook buckle expansion positioning self-destruction device 09 which ingeniously combines the positioning function during use and the automatic destruction function before taking out the expander after use, the device further comprises a positioning seat 09-12 arranged in a side hole 02-8 of a grab handle and an inclined pad 02-9, the positioning seat 09-12 extends upwards to form an arc positioning rod 09-13 and a self-destruction strip 09-16 arranged in front of the positioning rod 09-13, the upper end of the positioning rod 09-13 is a push handle 09-15, the back of the positioning rod 09-13 is provided with a positioning hook 09-14, the positioning hook 09-14 passes through a handle hole 01-8 to be engaged and positioned with a positioning buckle 01-9 at the tail end of the positioning rod 09-13, the doctor can carry out quick fixation, regulation and fixing according to the size of operation scope.

With continued reference to FIG. 8, destruct strip 09-16 is a shorter, smaller strip that is slightly forward tilted overall, with the front side abutting the front wall of handle side hole 02-8, and positioning socket 09-12 is more securely held in handle side hole 02-8 and angled pad 02-9 due to the forward and backward tension of destruct strip 09-16 and positioning rod 09-13. When a doctor pushes the push handle 09-18 once after use, the self-destruction strip 09-16 is applied with force by the push handle 09-18 and the positioning rod 09-13, the abdomen of the self-destruction strip is immediately fractured by the extrusion of the side hole 02-8 of the handle, and the self-destruction strip 09-16 is immediately fractured by the impact force when the positioning seat 09-12 slips under the lever action of the positioning seat 09-12 and the inclined pad 02-9 of the positioning rod 09-13, so the fracture of the self-destruction strip 09-16 is almost simultaneously performed with the slipping of the positioning seat 09-12 from the side hole 02-8 of the handle and the inclined pad 02-9, and the positioning rod 09-13 can not be buckled, expanded and positioned with the positioning buckle 01-9 any more due to the slipping of the positioning seat 09-12, the positioning rod 09-13 is out of position, all this happens and is done in a moment, and the broken part of the self-destructive strip 09-16 is almost at the root, and is shaped like a 'fracture', so that even if the self-destructive strip 09-16 is broken, the self-destructive strip still is connected with the positioning seat 09-12 and cannot fall down independently; after the positioning rod 09-13 is out of position, the positioning rod is still connected with the positioning seat 09-12 and cannot fall down independently, so that the dilator is an integral dilator when a doctor takes out the dilator, just like a disposable vaginal dilator without an instant device, and therefore, the operation is simple, labor-saving, convenient, practical, safe and effective.

With continuing reference to fig. 1-3 and 8, according to another preferred embodiment of the present invention, the head end of the self-destructive strip 09-16 extends forward to form a crown 09-17, so that the self-destructive strip 09-16 with the crown 09-17 is shaped like a "7" and is correspondingly engaged with the protrusion 02-7 positioned in front of the handle side hole 02-8, the self-destructive strip 09-16 with the crown 09-17 is easily broken and self-destructed when being pressed by the front wall of the handle side hole 02-8, and when the self-destructive strip 09-16 with the crown 09-17 is broken by pressing, the "broken" is still at the root, so that the operation is also time-saving, labor-saving, simple, convenient, safe and effective.

With continued reference to fig. 1-5, the first dilation positioning device 09 is arranged on one side of the pressing handle 01-2 and the holding handle 02-2, which brings about the advantage that the visual field and the space of the whole dilator are enlarged, when the upper and lower wings are dilated, the opening angle of the upper and lower wings can reach more than 40 degrees, which is very beneficial to various operations and examinations of obstetrics and gynecology department, because the vagina and the cervix can be fully exposed by more than 40 degrees, the vaginal orifice can be effectively protected from being excessively dilated, so that the clinical use is more beneficial to diagnosis and treatment and operation, and is safer and more effective.

With continued reference to FIG. 1, when the upper wing 01-1 and the lower wing 02-1 and the left and right wings 04-10 are in the closed state before clinical use, the doctor puts the dilator into the vagina when the clinical use starts, and the upper wing 01-1 and the lower wing 02-1 and the left and right wings 04-10 are still in the closed state, and at this time, the self-destruction strip 09-16 and the crown 09-17 are seen to be intact.

With continued reference to FIG. 2, when in clinical use, the doctor presses down the press handle 01-2, the upper wing 01-1 and the lower wing 02-1 are expanded to the required visual field, the positioning hooks 09-14 enter the positioning buckles 01-9 to be engaged and fixed, the left wing 04-10 and the right wing 04-10 are also expanded to the required positions, the doctor starts to examine and diagnose, and the self-destruction strips 09-16 are also intact.

Referring to fig. 3, according to a preferred embodiment, after the examination, the doctor pinches the first handle 04-8 and the second handle 04-5, and the second handle 04-5 pulls the positioning hook and lightly disengages from the second positioning buckle 03-5 by its elastic action, and easily retracts the side wing 04-10 between the upper wing and the lower wing; at the moment, the doctor pushes the push handle 09-15 forwards, due to the pushing force and the elastic action of the positioning rod 09-13, the self-destruction strip 09-16 or the crown 09-17 is extruded by the front wall which is slightly protruded backwards from the middle part of the upper layer of the side hole 02-8 of the handle, the self-destruction strip 09-16 or the crown 09-17 is broken and cannot be restored immediately, the positioning hook 09-14 is naturally separated from the positioning buckle 01-9, the upper wing and the lower wing are closed automatically, and the doctor takes out the speculum.

Referring to fig. 5, according to a preferred embodiment of the present invention, a double-layer handle side hole 02-8 is formed at a position corresponding to the handle hole 01-8 at the outer side of the middle portion of the handle 02-2, the bottom layer is larger than the upper layer, and an inclined pad 02-9 is formed at the rear end of the bottom layer of the hole.

According to another embodiment of the invention, the bottom layer of the side hole 02-8 of the handle is designed into a shape of a treasured gourd, and the locating seat 09-12 of the treasured gourd shape which is matched with the bottom layer can be more firmly arranged in the bottom layer of the side hole 02-8 of the handle, thereby not only being beautiful and practical, but also ensuring safe and reliable clinical use, the integral thickness of the locating seat 09-12 can be reduced due to the design of the upper layer and the lower layer, and the design of the front thickness and the back thickness of the locating seat 09-12 can ensure that the locating seat 09-12 can be more easily slipped from the side hole 02-8 of the handle and the inclined pad 02-9 and the locating seat 09-13 can not be tightly matched and screwed with the locating buckle 01-9 under the action of the lever of the inclined pad 02-9 through the transmission of the locating rod 09-13 under the action of the forward pushing force of, therefore, the expansion and positioning functions are lost, the three components are self-destroyed and cannot be recovered at the same time, so that the purpose of avoiding cross infection of iatrogenic diseases by using the medical disposable medical.

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 by the second shaft pin 03-2 at the inner side of the two ends of the sleeve 03-1 and can rotate up and down, a protrusion is further provided at the center of the outer side of the positioning sleeve 03, the protrusion is moved up or down, the upper and lower resting positions of the side wings can be adjusted, and the limit range of the downward rotation of the positioning sleeve and the side wings can be limited by the limit block.

With continued reference to fig. 6, the outer sides of the two ends of the positioning sleeve 03 are respectively provided with a second positioning buckle 03-3, a third shaft pin 03-4 of the positioning sleeve which is integrated with the second positioning buckle and can receive the shaft sleeve of the side wing opening is also arranged in front of the second positioning buckle, and a second positioning hook 04-4 with a second handle at the rear part of the shaft sleeve of the side wing opening is engaged with the second positioning buckle 03-3 at the outer side of the positioning sleeve to form a second expansion fixing device.

Referring to fig. 7, according to one embodiment of the present invention, the side expansion pieces 04 are very simple in structure, from front to back: the vagina dilator consists of a side wing 04-10, an opening shaft sleeve 04-3, a second positioning hook 04-4, a second handle 04-5 arranged on the second positioning hook and a first handle 04-8 arranged at the rear end of the second positioning hook, and is particularly suitable for non-operative precancerous lesion screening or examination and sampling of patients with vaginal wall mucosal prolapse, microwave, laser and other physical treatments.

The invention is provided with the first expansion positioning device and the second expansion positioning device, a doctor can effectively expand the upper wall, the lower wall, the left side wall and the right side wall of the vagina to required positions according to the four directions of the upper wing, the lower wing, the left wing and the right wing, and after the examination or treatment is finished, the left wing 04-10 and the right wing are firstly inwards recovered into the upper wing (01-1) and the lower wing (02-1) and finally the upper wing (01-1) and the lower wing (02-1) are recovered and closed, and the expander realizes self-destruction in the operation process, thereby achieving two purposes at one time.

The whole four-wing dilator of the invention has only 4 parts (the upper dilating plate, the lower dilating plate, the locating sleeve and the side dilating plate) in total, avoids more than 20 parts designed by foreigners, and the four wings with particularly complex and heavy structure can bring pain to patients and complex and fussy operation to doctors.

When the cervical vertebra dilator is used for dilation, the upper wing and the lower wing are dilated and fixed upwards and downwards through the first dilation positioning device, the maximum opening angle of the upper wing and the lower wing reaches more than 40 degrees, the left wing and the right wing are dilated leftwards and rightwards through the second dilation positioning device to the positions required by clinic and fixed, and the cervical vertebra dilator is very suitable for the visual field of clinical examination.

According to a preferred embodiment, the shaft pins are large at two ends, small in the middle, solid in the middle lower part, elastic in the middle upper part due to the fact that the middle upper part is provided with the split piece, the edge diameter of the split piece is slightly larger than the diameter of the split piece, the whole shaft pins are similar to dumbbell-shaped shaft pins, not only is assembly easy, but also the shaft pins can rotate easily, conveniently, flexibly and freely during clinical use, and the working efficiency of doctors is improved.

Having now described the concept and embodiments of the present invention in detail, it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit of the invention and the scope of the invention as defined in the appended claims.

Claims

1. A four-wing vaginal dilator comprises an upper expansion piece, a pressing handle integrated with the upper wing and extending backwards along the tail end of one side of the upper wing, a lower expansion piece and a holding handle integrated with the lower wing and extending downwards from the rear end of the lower wing, wherein the two sides of the rear ends of the upper wing and the lower wing are connected through a pin shaft, the pressing handle and the holding handle are engaged through an expansion positioning device, a positioning sleeve is rotatably connected with the rear end of the upper wing and the side expansion piece respectively, and the four-wing vaginal dilator is characterized by further comprising a first expansion positioning device consisting of a hook buckle expansion positioning self-destruction device,

the side expansion piece comprises a first handle at the tail end of the rear part, a second positioning hook which is inward in the radial direction and a second handle arranged on the second positioning hook are arranged on the inner side in front of the first handle, an opening shaft sleeve is arranged in front of the second positioning hook, the front part of the opening shaft sleeve is a side wing, the first handle and the second handle are kneaded in opposite directions to enable the second positioning hook to be upwards warped on a second positioning buckle on the outer side of the positioning sleeve to move, so that the outward horizontal opening angle of the left side wing and the right side wing reaches more than 40 degrees and the left side wing and the right side wing are inwards folded between,

2. The four-wing vaginal dilator of claim 1, wherein a protrusion is further provided in the center of the outer side of the positioning sleeve, a limiting block is provided in the center of the inner side of the positioning sleeve, the protrusion is moved upwards or downwards, the upper and lower centering of the positioning sleeve and the side wings can be adjusted, and the limiting block limits the limit range of the downward rotation of the positioning sleeve and the side wings.

3. The four-wing vaginal dilator according to claim 1, wherein the first dilation positioning means is a hook-and-loop dilation positioning self-destruction means, the hook-and-loop dilation positioning self-destruction means comprises a positioning seat mounted on a side hole of the handle and the cushion, a self-destruction strip and a positioning rod are arranged on the positioning seat in front and at the back, a positioning hook capable of engaging with the positioning hook at the end of the handle hole is provided on the back of the rod, and at least one of the self-destruction strip and the positioning rod should have elasticity.

4. The four-wing vaginal dilator of claim 3, wherein the self-destructive strip has a crown extending forward from the tip thereof, the crown being substantially shaped like a "7" in the transverse direction, the crown engaging with a protrusion located forward of the side hole of the handle.

5. A four-wing vaginal dilator according to claims 1 and 3, wherein the hook buckle dilating and positioning self-destructive device positioning hook and the positioning buckle are matched to dilate to the maximum gear, so that the opening angle of the upper wing and the lower wing can reach more than 40 degrees, and the positions of the positioning hook and the positioning buckle can be interchanged.

6. A four-winged vaginal dilator according to claim 1 wherein the upper dilator sheet comprises: the upper wing and the pressing handle are integrated with the upper wing and extend backwards along the rear end of one side of the upper wing, a pressing handle hole is arranged on the pressing handle, a positioning buckle for being engaged with the positioning hook is arranged at the tail end of the pressing handle hole, a limiting groove for being connected with a limiting block at the inner side of the positioning sleeve is arranged in the center of the rear part of the upper wing and used for limiting the limiting range of the downward rotation of the positioning sleeve and the side wing, a shaft pin is arranged between the upper wing and the pressing handle, and a second shaft hole capable of receiving a second shaft pin is arranged in front of the shaft pin;

7. The four-wing vaginal dilator of claim 6, wherein the side holes of the handle are arranged in 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 that of the positioning seat.

8. A four-wing vaginal dilator, according to claim 1, in which the front central portions of the wings are inwardly curved and the front ends of the front portions are duckbilled.

9. A four-wing vaginal dilator, according to claim 1, in which the leading ends of the wings are substantially straight.

10. The four-wing vaginal dilator of claim 1, wherein the axle pins are slightly larger at both ends, slightly smaller in the middle, solid at the middle-lower part, and open at the middle-upper part, the edge diameter of the open is slightly larger than that of the open, and the whole vaginal dilator looks like a dumbbell.