WO2022063252A1

WO2022063252A1 - Portable speculum applied to cervix surgery

Info

Publication number: WO2022063252A1
Application number: PCT/CN2021/120463
Authority: WO
Inventors: 许泓; 吴丹; 孙峰; 杨叶平; 欧阳婧; 孙亚兵; 顾倪浩; 林仙华; 林瑜; 张平; 山珊; 陈澜
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: CN112022079A

Abstract

A portable speculum applied to cervix surgery, comprising an upper speculum blade (01), a lower speculum blade (02), at least one side speculum blade (04), and a positioning sleeve (03). The upper speculum blade (01) and the lower speculum blade (02) are rotatably connected to each other and positioned by means of a speculum fixing mechanism (09); the positioning sleeve (03) and the upper speculum blade (01) are rotatably connected to each other; the side speculum blade (04) is rotatably connected onto the positioning sleeve (03); the side speculum blade (04) comprises side wings (04-1), positioning hooks (04-4) arranged on the side wings (04-1), and bushings (04-3); the positioning sleeve (03) comprises a connecting ring (03-1) nested on the upper speculum blade (01); positioning fasteners (03-3) corresponding to the positioning hooks (04-4) and second pins (03-4) in mating connection with the bushings (04-3) are arranged on the end portions of the connecting ring (03-1); each bushing (04-3) is an open bushing (04-3); levers (04-5) used in conjunction with handles (04-2) located at the end positions of the side wings (04-1) are further arranged on the positioning hooks (04-4); the speculum fixing mechanism (09) is a screw fixing mechanism. The present invention has the advantages of being convenient to operate and low in manufacturing cost.

Description

A portable dilation device for cervical surgery

technical field

The invention belongs to the field of medical instruments and relates to a vaginal dilator, in particular to a portable dilation device used in cervical surgery.

Background technique

Vaginal dilators are commonly used examination and surgical instruments in gynecology to expose the examination site or surgical site. Commonly used vaginal dilators include duckbill-shaped upper and lower wings that can be opened and closed. The positioning device on the dilator keeps the upper and lower wings open at a certain angle. Observation, examination and surgery. In fact, due to the limitation of the width of the upper and lower wings, and after the upper and lower wings are opened, the vaginal wall between the two sides of the upper and lower wings will be backfilled into the opened area, thereby reducing the exposure range, Difficulty in examination or surgery.

Chinese patent CN101869735B discloses a vaginal dilator with double wings, comprising an upper wing, a handle integral with the upper wing and extending downward along one side of the upper wing at an obtuse angle therewith, a lower wing, and A handle that is integrated with the lower wing and extends downward along one side of the lower wing in a direction close to a right angle. The two sides of the rear end of the upper wing and the lower wing are respectively connected by pins, and the handle and the handle can be fixed by the first expansion. The device is meshed with each other, and also includes a circular arc-shaped active positioning sleeve, the two ends of the sleeve are connected with both sides of the rear end of the upper wing through the active positioning sleeve shaft pins, and a mounting seat is respectively provided on the outer sides of the two ends of the active positioning sleeve. The seat has a mounting hole for receiving the side wings that can be folded between the upper and lower wings, and the rear part of the side wings is provided with a second expansion fixing device that can engage with the upper part of the rear end of the upper wing. When in use, insert the upper and lower wings into the vagina with the upper and lower wings closed and the two wings are folded between the upper and lower wings, control the handle and the handle to open the upper and lower wings to the desired field of view, and fix it through the first expansion The device maintains the field of view, and then controls the rear ends of the left and right wings oppositely, so that the two wings are opened until the desired field of view, and then engages the rear part of the side wings and the second expansion fixture on the upper rear end of the upper wing. When the upper and lower wings and the left and right wings are expanded, observation, inspection of the vagina, cervix, and surgery can be performed. However, the dilator still has problems such as inconvenient expansion of the flanks and troublesome manufacturing process.

With the continuous advancement of science and technology, more and more electronic products are used in medical devices, and vaginal dilators are also required to have functions such as lighting and photography.

For example, US Pat. No. 6,024,696 discloses a "side wall supported speculum", that is, a four-wing vaginal dilator, which has more than 20 components, complex structure, cumbersome and laborious operation, and high cost. A side wall supported four-wing speculum It includes an upper expansion piece including an upper wing, a push handle and an 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 setting device for placing a smoke exhaust pipe, and a lower wing and a first The lower expansion piece of the second handle, 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 to the left and right into a small left and right each. For the wing, there are pins extending forward and backward on the upper wing. The pins pass through the front and rear positioning grooves provided at the rear end of the lower wing. In addition, screw holes are installed on the left and right above the handle for installing the spring clips. The rear axons of the left and right expansion sheets are withheld 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 side wall, which will inevitably lead to a small surgical space, insufficient surgical field, and lack of practical value.

In addition, vaginal expanders are generally disposable devices. After using vaginal expanders with a large amount of bacteria and viruses, they are usually collected in a clinical setting, so that third-party medical waste disposal institutions designated by the disease control department can be used for disinfection. Comprehensive utilization of plastic particles after cleaning and centralized destruction. However, because there are still many management loopholes and links in the recycling or processing process, if the management is improper, it will be recycled by unscrupulous personnel, and it will flow into the clinic for secondary use without strict sterilization, resulting in cross-infection of diseases, which is harmful to doctors and patients. Both sides have the potential to cause serious health damage. Therefore, there is a need for improvements to existing dilators.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a portable dilation device for cervical surgery with a simple structure in order to overcome the above-mentioned defects of the prior art.

The object of the present invention can be realized through the following technical solutions:

A portable expansion device applied to cervical surgery, comprising an upper expansion sheet, a lower expansion sheet, at least one side expansion sheet and a positioning sleeve, the upper expansion sheet and the lower expansion sheet are rotatably connected and positioned by an expansion fixing mechanism, the The positioning sleeve is rotatably connected to the upper expansion piece, the side expansion piece is rotatably connected to the positioning sleeve, the side expansion piece includes a side wing, a positioning hook and a shaft sleeve arranged on the side wing, and the positioning sleeve includes a nested arrangement A connecting ring on the upper expansion sheet, the end of the connecting ring is provided with a positioning buckle corresponding to the positioning hook and a second shaft pin matched and connected with the shaft sleeve, the shaft sleeve is an open shaft sleeve, the The positioning hook is also provided with a wrench matched with the handle at the end of the side wing, and the expansion fixing mechanism is a screw fixing mechanism.

Preferably, the expansion angle between the upper expansion piece and the lower expansion piece in the maximum expansion state is greater than 40°.

Preferably, the lateral expansion sheet can be expanded laterally to a field of view required for clinical operations.

Further, one end of the positioning hook is fixedly connected with the side wing, and the other end is a free end, and the wrench is arranged on the free end.

Further, the inner side of the end of the connection ring is provided with a third shaft pin for connecting with the upper expansion piece, the positioning buckle is arranged on the outer side of the end of the connection ring, and the second shaft pin is vertically installed on the the positioning button.

Further, the positioning buckle is formed by vertically extending the end of the connecting ring to the outside, so that the positioning buckle is formed on the left and right edges of the positioning sleeve.

Further, a toggle member for toggle the position of the positioning sleeve is provided in the middle of the connecting ring.

Preferably, the toggle member is a protrusion provided in the middle of the outer side of the connecting ring.

Preferably, the toggle member is formed in the shape of a groove in the middle portion of the outer side of the connecting ring.

Further, a limit block is provided in the middle of the connecting ring.

Further, the positioning hook and the shaft sleeve are both arranged on the side of the flank facing the upper expansion piece and the lower expansion piece.

Further, the screw fixing mechanism includes a positioning seat and a screw fixing member integrally formed on the positioning seat, the positioning seat is connected to the side hole of the handle of the lower expansion sheet through an inclined pad, and the upper expansion sheet is provided with a side hole. There is a handle hole for passing through and fixing the position of the screw fastener.

Further, a self-destructing strip is also integrally formed on the positioning seat, and one of the self-destructing strip and the fixing piece is an elastic piece. And in the inclined pad, the self-destruction bar will be destroyed after use.

Preferably, the end of the self-destructing bar has a self-destructing bar head crown, and the self-destructing bar head crown is matched with the side wall of the side hole of the handle.

Further, the expander is also connected with a smoker, and the smoker is connected with a smoke exhaust pipe clamped on the upper expansion piece, the lower expansion piece or the side expansion piece.

Preferably, a filter element is provided on the smoke exhaust pipe.

Preferably, the smoker is sequentially connected with a rear smoke exhaust pipe, an activated carbon adsorption pipe and a front smoke exhaust pipe, and the front smoke exhaust pipe is fixed on the inner side of the lower expansion sheet.

Preferably, the above-mentioned shaft pins are 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, which is full of elasticity. Lightweight, convenient and practical.

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

1. The present invention has a simple structure and has the effect of being portable.

2. In the present invention, an open shaft sleeve is arranged on the side expansion piece, and a shaft pin matching the open shaft sleeve is arranged on the positioning sleeve. It is only necessary to insert the open shaft sleeve into the shaft pin, and the installation is convenient.

3. The manufacturing mold of the positioning sleeve of the present invention is simple, no "core pulling" is required during production, the cost is low, and the mold release is convenient and fast.

4. The existing dilator with flanks only forms a handle at the end, which is difficult to realize the connection and disengagement of the hook in clinical operation, and the operation is inconvenient; and the present invention is also provided with a wrench on the positioning hook. Knead the handle at the end of the side expansion piece with the wrench, the positioning hook of the side expansion piece will be upturned, it is very convenient to enter the positioning buckle of the positioning sleeve, and adjust and fix it, the operation is more convenient, and the original defects of the known technology have been carried out. Radical changes and advancements, and thus practicality.

5. The positioning buckle of the present invention is formed by vertically extending the end of the connecting ring to the outside, so that the positioning buckle is formed on the left and right edges of the positioning sleeve, thereby effectively increasing the operation space.

6. The present invention is provided with a self-destructing strip, which can be convenient to quickly break the self-destructing strip after the operation is completed, so as to realize instant destruction and improve the safety of the device.

7. The present invention can be connected with a smoking device, and the overall structure is compact and portable, which is convenient for medical staff to carry the device when they go out for inspection and surgery.

Description of drawings

FIG. 1 is a schematic structural diagram of an expanded state according to an embodiment of the present invention;

FIG. 2 is a schematic diagram of another angle of the expanded state according to an embodiment of the present invention;

3 is a front view of an embodiment of the present invention;

4 is a rear view of an embodiment of the present invention;

5 is a bottom view of another embodiment of the present invention;

6 is a schematic structural diagram of an embodiment of the present invention with a smoking device;

7 is a schematic structural diagram of a closed state according to another embodiment of the present invention;

Fig. 8 is the enlarged schematic diagram of the circle part in Fig. 7;

FIG. 9 is a schematic structural diagram of an expanded state according to another embodiment of the present invention;

Fig. 10 is the enlarged schematic diagram of the circle part in Fig. 9;

Figure 11 is a partial schematic diagram of the self-destruction bar when the shape is destroyed after use;

12 is a schematic structural diagram of an upper expansion sheet according to an embodiment of the present invention;

13 is a schematic structural diagram of a lower expansion sheet in one direction according to an embodiment of the present invention;

14 is a schematic structural diagram of the lower expansion sheet in another direction according to an embodiment of the present invention;

15 is a schematic structural diagram of a positioning sleeve according to an embodiment of the present invention;

16 is a schematic structural diagram of a side expansion sheet according to an embodiment of the present invention;

17 is a schematic structural diagram of a screw according to an embodiment of the present invention;

Fig. 18 is the structural schematic diagram of the screw position after the shape of the present invention is destroyed;

19 is a schematic structural diagram of another embodiment of the present invention;

Among them, 01, upper expansion sheet, 02, lower expansion sheet, 03, positioning sleeve, 04, side expansion sheet, 05, front exhaust pipe, 06, activated carbon adsorption pipe, 07, rear exhaust pipe, 08, smoker , 01-1, the upper wing, 01-2, the handle, 01-3, the first shaft pin, 01-4, the third shaft hole, 01-5, the upper wing positioning groove, 01-8, the handle hole, 01-9, hook, 02-1, lower wing, 02-2, handle, 02-3, first shaft hole, 02-7, protrusion, 02-8, side hole of handle, 02-9, Inclined pad, 02-10, buckle, 03-1, connecting ring, 03-2, third axle pin, 03-3, positioning buckle, 03-4, second axle pin, 04-1, side wing, 04- 2. Handle, 04-3, bushing, 04-4, positioning hook, 04-5, wrench, 09-12, positioning seat, 09-13, screw front dome, 09-14, screw, 09-15, screw Cap, 09-16, Self-Destructing Bar, 09-17, Self-Destructing Bar Crown.

detailed description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments. This embodiment is implemented on the premise of the technical solution of the present invention, and provides a detailed implementation manner and a specific operation process, but the protection scope of the present invention is not limited to the following embodiments.

Example 1

As shown in Figures 1-4, this embodiment provides a portable dilation device for cervical surgery, including an upper dilation sheet 01, a lower dilation sheet 02, a side dilation sheet 04 and a positioning sleeve 03, the upper dilation sheet 01 and the The lower expansion piece 02 is rotatably connected and positioned by the expansion fixing mechanism 09, the positioning sleeve 03 is rotatably connected to the upper expansion piece 01, the side expansion piece 04 is rotatably connected to the positioning sleeve 03, and the space between the upper expansion piece 01 and the lower expansion piece 02 In the maximum expansion state, the expansion angle is greater than 40°, and the side expansion sheet can be hidden in the space formed by the upper expansion sheet 01 and the lower expansion sheet 02 or expanded outward to the required angle, which can meet the visual field requirements of clinical operations. .

As shown in Figures 12-14, the upper expansion sheet 01 includes an upper wing 01-1 and a handle 01- 2. The lower expansion piece 02 includes a lower wing 02-1 and a handle 02-2 which is integral with the lower wing 02-1 and extends downward along one side of the lower wing 02-1 in a direction close to a right angle. The upper wing 01 -1 There are first axle pins 01-3 on both sides of the rear end, and first axle holes 02-3 corresponding to the first axle pins 01-3 are arranged on both sides of the rear end of the lower wing 02-1 to realize the upper expansion piece 01 It is connected with the lower expansion piece 02 by a pin shaft, thereby realizing the change of the expansion angle between the upper expansion piece 01 and the lower expansion piece 02 . After the expansion angles of the upper expansion piece 01 and the lower expansion piece 02 are determined, the expansion and fixation mechanism is used for positioning.

As shown in FIG. 16 , the side expansion piece 04 includes a side wing 04-1, a positioning hook 04-4 arranged on the side wing 04-1, and a shaft sleeve 04-3. The shaft sleeve 04-3 is an open shaft sleeve, and the positioning hook 04 -4 is also provided with a wrench 04-5, and the end of the side wing 04-1 is a handle 04-2. The quick adjustment of the expansion angle of the side expansion piece 04 is realized through the interaction of the handle 04-2 and the wrench 04-5. One end of the positioning hook 04-4 is fixedly connected with the side wing 04-1, and the other end is a free end, and the wrench 04-5 is arranged on the free end, so as to maximize the interaction between the handle 04-2 and the wrench 04-5. After the operation, the doctor kneads the wrench 04-5 and the handle 04-2. At this time, the wrench 04-5 will pull the positioning hook 04-4 and use its elastic effect to lightly disengage the positioning buckle 03-3, and take advantage of the situation to move the flank 04. -1 Easy recovery to between the upper and lower expansion sheets.

As shown in FIG. 15 , the positioning sleeve 03 includes a connecting ring 03-1 nested on the upper expanding sheet 01, the connecting ring 03-1 is connected to the third shaft on the upper expanding sheet 01 through a third shaft pin 03-2 The holes 01-4 are connected, and the end of the connecting ring 03-1 is provided with a positioning buckle 03-3 corresponding to the positioning hook 04-4 and a second shaft pin 03-4 matched with the shaft sleeve 04-3. The third shaft pin 03-2 is arranged on the inner side of the end of the connecting ring 03-1, the positioning buckle 03-3 is arranged on the outer side of the end of the connecting ring 03-1, and the second shaft pin 03-4 is vertically installed on the On the positioning buckle 03-3. The positioning buckle 03-3 is formed by vertically extending the end of the connecting ring 03-1 to the outside, so that the positioning buckle 03-3 is formed on the left and right edges of the positioning sleeve, which effectively increases the inner diameter distance of the side expansion sheet when it expands to the maximum speed.

The positioning sleeve 03 is sleeved on the upper expansion sheet 01, the upper expansion sheet 01 is also provided with an upper wing positioning groove 01-5 for limiting the positioning sleeve 03, and the inner side of the connecting ring 03-1 is correspondingly provided with a limiting block .

As shown in FIG. 4 , the upper expansion piece 01 is provided with a hook 01-9, and the lower expansion piece 02 is provided with a buckle 02-10 corresponding to the hook 01-9, further realizing the upper expansion piece 01 and the lower expansion piece 02 connection. Preferably, the lower expansion piece 02 is further provided with a snap baffle to block the hooks 01-9 and prevent excessive expansion, and the position of the snap baffle is set as required.

Referring to FIGS. 7-10 , the expansion fixing mechanism 09 is a screw fixing mechanism, including a positioning seat 09-12 and a screw fixing member integrally formed on the positioning seat 09-12. The positioning seat 09-12 passes through a The oblique pad 02-9 is connected to the handle side hole 02-8 of the lower expansion piece 02, and the upper expansion piece 01 is provided with a handle hole 01-8 for passing through and fixing the position of the screw fixing piece, which is convenient for receiving Expand, adjust and fix the size of the inspection field or surgical scope.

In this embodiment, as shown in FIG. 17 , the screw fixing member includes a screw 09-14 and a nut 09-15. The screw 09-14 extends upward from the positioning seat 09-12 and passes through the handle side hole 02 in turn. -8 and the handle hole 01-8 are connected with the nut 09-15, and the expansion angle between the upper wing 01-1 and the lower wing 02-1 can be realized by adjusting the different positions of the nut 09-15 on the screw 09-14. fixed. The diameter of the nut 09-15 is larger than the width of the handle hole 01-8, so as to facilitate the clamping.

The shaft pins in the device are all 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, which is elastic. In particular, the second shaft pin facilitates the disassembly and assembly of the side expansion sheet.

Example 2

In the portable dilation device for cervical surgery provided in this embodiment, the outer middle portion of the connecting ring 03-1 of the positioning sleeve 03 is provided with a protrusion for moving the upper and lower positions of the positioning sleeve to change the position of the side expansion sheet. The rest are the same as in Example 1.

Example 3

In the portable expansion device for cervical surgery provided in this embodiment, the outer middle of the connecting ring 03-1 of the positioning sleeve 03 is set in a groove shape, which is convenient for moving the upper and lower positions of the positioning sleeve to change the position of the side expansion sheet, and the groove The shape can also facilitate the placement of the exhaust pipe. The groove shape can be arranged up and down at the same time. The rest are the same as in Example 1.

Example 4

As shown in FIG. 7-FIG. 10, the portable dilation device for cervical surgery provided in this embodiment is also integrally formed with a self-destruction strip 09-16, a self-destruction strip 09-16 and a fixing member on the positioning seat 09-12. One of them is an elastic piece. The positioning seat 09-12 is more firmly fixed in the side hole 02-8 of the handle and the inclined pad 02-9 through the front and rear tension of the self-destructing strip 09-16 and the fixing piece, which will be used for fixing the upper The expansion and positioning functions of the wings 01-1 and the lower wings 02-1 in the open state and the disfigurement function that can be destroyed after use are completely and skillfully combined. The rest are the same as any of Embodiments 1-3.

The self-destructing strip 09-16 is a short and relatively small strip that slopes slightly forward. The front is close to the front wall of the side hole 02-8 of the handle, the rear is a fixing piece, and the end of the fixing piece is a push handle 09-18. When the dilator is used and closed to the state shown in Figure 7, push the push handle 09-18, the self-destruction strip 09-16 is forced by the push handle 09-18 and the fixing piece, and its abdomen is affected by the handle 09-18. The extrusion of the front wall of the hole 02-8 causes the root to be "fractured" immediately, as shown in Figure 11, and the lever action of the fixing member through the positioning seat 09-12 and the inclined pad 02-9 causes the positioning seat 09-12 to slip off The impact force of the self-destruction bar 09-16 causes the root of the self-destruction bar 09-16 to "fracture" immediately, so the self-destruction bar 09-16 "fractures" is almost the same as the positioning seat 09-12 from the side hole of the handle 02-8 and the inclined pad 02- 9. The slippage is carried out at the same time. Due to the slippage of the positioning seat 09-12, the fixing piece is out of position, and the fixing piece cannot realize the expansion and positioning functions. 16 The broken parts are almost all at the root, which looks like a "fracture", so even if the self-destruction strip 09-16 is broken, it is still connected to the positioning seat 09-12 and will not fall off alone; The positioning seat 09-12 is connected 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 immediate destruction device, so the operation is simple and labor-saving, convenient and practical, safe and effective.

If the fixing member is a screw fixing member, as shown in Figure 17, the bottom of the screw 09-14 is provided with a screw front dome 09-13 for placing the self-destructing strip 09-16. The positional relationship is shown in Figure 18.

Example 5

In the portable dilation device for cervical surgery provided in this embodiment, 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 09-16 with the head crown 09-17 is laterally It is shaped like a "7", correspondingly, it just matches the protrusion 02-7 in front of the handle side hole 02-8 in the middle of the side of the handle 02-2. Destruction bar 09-16 is more likely to break and self-destruct when it is squeezed by the front wall of the side hole 02-8 of the handle, and when the self-destruction bar 09-16 with the head crown 09-17 is squeezed and broken, "fracture" "The fracture is still at the root, so the operation is also time-saving and labor-saving, simple and convenient, safe and effective. The rest are the same as in Example 4.

Example 6

As shown in FIG. 6 or FIG. 19 , the portable dilation device for cervical surgery provided in this embodiment is also connected with a smoker 08 , which is clamped to the upper dilation piece 01 , the lower dilation piece 02 or the side dilation piece The smoke exhaust pipe on 04 is connected, and the smoke exhaust pipe is provided with a filter element. In this embodiment, the filter element adopts the adsorption tube 06 with activated carbon. Specifically, the smoker 08 can be connected to the rear smoke pipe 07, the adsorption pipe 06 with activated carbon, and the front smoke pipe 05 in sequence. The rest are the same as any of Embodiments 1-5.

Example 7

The portable dilation device for cervical surgery provided in this embodiment has two side dilation sheets 04 , as shown in FIG. 5 . In this embodiment, through the arrangement of the positioning buckles located on the left and right edges of the positioning sleeve, the maximum distance between the inner diameters of the left and right expansion sheets can be up to >88 mm (30 mm more than the prior art), which is very beneficial to clinical practice. It has great use value, can effectively increase the surgical space, is safe, effective, and practical, and plays a fundamental role in improving and progressing. The rest are the same as any of Embodiments 1-6.

The preferred embodiments of the present invention have been described in detail above. It should be understood that those skilled in the art can make many modifications and changes according to the concept of the present invention without creative efforts. Therefore, all technical solutions that can be obtained by those skilled in the art through logical analysis, reasoning or limited experiments on the basis of the prior art according to the concept of the present invention shall fall within the protection scope determined by the claims.

Claims

A portable expansion device applied to cervical surgery, comprising an upper expansion sheet, a lower expansion sheet, at least one side expansion sheet and a positioning sleeve, the upper expansion sheet and the lower expansion sheet are rotatably connected and positioned by an expansion fixing mechanism, the The positioning sleeve is rotatably connected to the upper expansion piece, and the side expansion piece is rotatably connected to the positioning sleeve, and is characterized in that:

The side expansion piece includes a side wing, a positioning hook arranged on the side wing, and a shaft sleeve, the positioning sleeve includes a connection ring nested on the upper expansion piece, and the end of the connection ring is provided with a positioning hook corresponding to the positioning hook A buckle and a second shaft pin matched with the shaft sleeve, the shaft sleeve is an open shaft sleeve, the positioning hook is also provided with a wrench matched with the handle at the end of the flank, the expansion fixed The mechanism is a screw fixing mechanism.
The portable dilation device for cervical surgery according to claim 1, wherein one end of the positioning hook is fixedly connected to the side wing, and the other end is a free end, and the wrench is arranged on the free end.
The portable dilation device for cervical surgery according to claim 1, wherein the inner side of the end of the connecting ring is provided with a third shaft pin for connecting with the upper dilation sheet, and the positioning buckle is provided on the connecting ring. On the outer side of the ring end, the second shaft pin is vertically installed on the positioning buckle.
The portable dilation device for cervical surgery according to claim 1, wherein the positioning buckle is formed by vertically extending the end of the connecting ring to the outside, so that the positioning buckle is formed on the left and right edges of the positioning sleeve.
The portable dilation device for cervical surgery according to claim 1, wherein a toggle member for toggle the position of the positioning sleeve is provided in the middle of the connecting ring.
The portable dilation device for cervical surgery according to claim 1, wherein the screw fixing mechanism comprises a positioning seat and a screw fixing member integrally formed on the positioning seat, and the positioning seat is connected by an inclined pad At the side hole of the handle of the lower expansion piece, the upper expansion piece is provided with a handle hole for passing through and fixing the position of the screw fixing member.
The portable dilation device for cervical surgery according to claim 6, wherein a self-destruction strip is integrally formed on the positioning seat, and one of the self-destruction strip and the fixing piece is an elastic piece, The front and rear tension of the destroying strip and the fixing piece makes the positioning seat fixed in the side hole of the handle and the inclined pad.
The portable dilation device for cervical surgery according to claim 7, wherein the end of the self-destructing strip has a self-destructing strip crown, and the self-destructing strip crown overlaps with the side wall of the side hole of the handle combine.
The portable dilation device for cervical surgery according to claim 1, wherein the dilator is further connected with a smoker, and the smoker is connected to the row of the upper dilator, the lower dilator or the side dilator. Smoke pipe connection.
The portable dilation device for cervical surgery according to claim 9, wherein a filter element is provided on the smoke exhaust pipe.