CN212438566U - Portable expansion device applied to cervical surgery - Google Patents

Abstract

The utility model relates to a be applied to portable expanding device of cervical surgery, including last expansion piece, lower expansion piece, at least one side expansion piece and position sleeve, go up expansion piece and lower expansion piece rotatable coupling and fix a position through expansion fixed establishment, position sleeve and last expansion piece rotatable coupling, side expansion piece rotatable coupling is on the position sleeve, side expansion piece includes the flank, sets up location hook and the axle sleeve on the flank, the position sleeve sets up the go-between on the expansion piece including the nestification, this go-between tip be provided with the location that the location hook corresponds detain and with axle sleeve accordant connection's second axis round pin, the axle sleeve is open type axle sleeve, still be equipped with the spanner that uses with the handle phase-match that is located the flank tip on the location hook, expansion fixed establishment is spiral fixed establishment. Compared with the prior art, the utility model has the advantages of convenient operation, low manufacturing cost, etc.

Description

Portable expansion device applied to cervical surgery

Technical Field

The utility model belongs to the field of medical equipment, a vaginal dilator is related to, especially relate to a be applied to portable expanding device of cervical operation.

Background

The vaginal dilator is a commonly used examination and operation instrument for gynecology and is used for exposing an examination part or an operation position. The common 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. In fact, the vaginal wall between the two sides of the upper and lower wings will backfill into the opened area after the upper and lower wings are opened, thereby reducing the exposure range and causing difficulty in examination or operation.

Chinese patent CN101869735B discloses a vaginal dilator with two side wings, which comprises an upper wing, a pressing handle integrated with the upper wing and extending downward along one side of the upper wing in an obtuse angle direction, a lower wing, and a handle integrated with the lower wing and extending downward along one side of the lower wing in a direction close to a right angle direction, wherein two sides of the rear ends of the upper wing and the lower wing are respectively connected by a pin shaft, the pressing handle and the handle can be engaged by a first dilating fixing device, the vaginal dilator further comprises a circular arc-shaped flexible positioning sleeve, two ends of the sleeve are connected with two sides of the rear end of the upper wing by a flexible positioning sleeve pin shaft, the outer sides of two ends of the flexible positioning sleeve are respectively provided with a mounting seat, the mounting seat is provided with a mounting hole for receiving the side wing which can be folded between the upper wing and the lower wing, and the rear part of the side wing is provided with a second dilating fixing device which can be engaged with the upper part of. When the vagina dilator is used, the upper wing and the lower wing are inserted into a vagina under the state that the upper wing and the lower wing are closed and the two side wings are folded between the upper wing and the lower wing, the upper wing and the lower wing are opened to a required visual field by controlling the handle and the pressing handle, the visual field range is kept by the first expansion fixing device, then the rear ends of the left side wing and the right side wing are controlled oppositely to open the two side wings to the required visual field, then the rear parts of the side wings and the second expansion fixing device on the upper parts of the rear ends of the upper wings are meshed, and at the moment, the vagina, the cervix and the operation can be observed and checked through the expanded visual fields. However, the dilator has the problems of inconvenient expansion of the side wings, troublesome manufacturing process and the like.

With the continuous progress of science and technology, more and more electronic products are applied to medical instruments, and the vaginal dilator is also required to have the functions of illumination, camera shooting and the like.

For example, U.S. Pat. No. 6,024,696 discloses a "lateral wall supporting speculum", i.e. a four-wing vaginal dilator, having twenty or more parts in total, complicated structure, cumbersome operation, high cost, a lateral wall supporting four-wing speculum including an upper wing, a pressing handle, and an upper handle, the upper handle being connected to the upper wing by a pin, the upper wing further having a smoke exhaust setting device for placing a smoke exhaust pipe, and a lower expanding piece including a lower wing and a second handle, the handles being fixed to the second handle by screws and nuts, the upper and lower wings having left and right expanding pieces between them, the rear parts of the left and right expanding pieces extending left and right as left and right winglets, pins extending forward and backward above the winglets, the pins passing through front and rear positioning grooves provided at the rear end of the lower wing, and screw holes provided left and right above the handles for installing spring pressing pieces to press the rear shaft of the left and right expanding pieces, for maintaining the vertical position of the left and right expansion pieces, the complex structure cannot expand the left and right expansion pieces outwards, nor can the left and right expansion pieces be retracted inwards! But only the left and right expansion pieces can be laid down and erected to support the vaginal side wall, which inevitably results in small operation space, insufficient operation field and lack of practical value.

In addition, the vaginal dilator is generally a disposable device, and after the vaginal dilator with a large amount of bacteria and viruses is used, the vaginal dilator usually performs centralized collection in clinic, so that a third-party medical waste disposal mechanism appointed by a disease control department can perform disinfection and cleaning, and plastic particles are comprehensively utilized after centralized destruction. However, there are many management holes and links in the recycling or treatment process, for example, if the management is not proper, the waste liquid is recycled by illegal personnel, and the waste liquid flows into the clinic without strict sterilization to be used for the second time, thereby causing cross infection of diseases and possibly causing serious health injury to both doctors and patients. There is therefore a need for improvements to existing dilators.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome the defects of the prior art and provide a portable dilating device which has simple structure and is applied to cervical surgery.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a be applied to portable expanding unit of cervical surgery, includes expansion piece, lower expansion piece, at least one side expansion piece and position sleeve, go up expansion piece and lower expansion piece rotatable coupling and fix a position through expansion fixed establishment, position sleeve and last expansion piece rotatable coupling, side expansion piece rotatable coupling is on the position sleeve, side expansion piece includes the flank, sets up location hook and the axle sleeve on the flank, the position sleeve sets up the go-between on last expansion piece including the nestification, this go-between tip be provided with the location that the location hook corresponds detain and with axle sleeve accordant connection's second axis round pin, the axle sleeve is open type axle sleeve, still be equipped with the spanner that uses with the handle phase-match that is located the flank tip on the location hook, expansion fixed establishment is spiral fixed establishment.

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

Preferably, the side expansion pieces can be laterally expanded to a visual field required for clinical operation.

Furthermore, location hook one end and flank fixed connection, the other end is the free end, the spanner sets up in this free end.

Furthermore, a third shaft pin used for being connected with the upper expansion sheet is arranged on the inner side surface of the end part of the connecting ring, the positioning buckle is arranged on the outer side surface of the end part of the connecting ring, and the second shaft pin is vertically arranged on the positioning buckle.

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

Furthermore, a poking piece for poking the position of the positioning sleeve is arranged in the middle of the connecting ring.

Preferably, the poking piece is a protrusion arranged in the middle of the outer side of the connecting ring.

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

Furthermore, the middle part of the connecting ring is provided with a limiting block.

Furthermore, the positioning hook and the shaft sleeve are arranged on one side of the upward expansion piece and the lower expansion piece of the side wing surface.

Furthermore, the spiral fixing mechanism comprises a positioning seat and a spiral fixing piece integrally formed on the positioning seat, the positioning seat is connected to a position beside a grab handle of the lower expansion piece through an inclined pad, and a handle pressing hole used for penetrating through and fixing the spiral fixing piece is formed in the upper expansion piece.

Furthermore, a self-destruction strip is integrally formed on the positioning seat, one of the self-destruction strip and the fixing piece is an elastic piece, the positioning seat is fixed in the side hole of the grab handle and the inclined pad through the front and back tension of the self-destruction strip and the fixing piece, and the positioning seat is destroyed after being used.

Preferably, the end part of the self-destruction strip is provided with a self-destruction strip crown, and the self-destruction strip crown is lapped with the side wall of the side hole of the handle.

Furthermore, the expander is also connected with a smoke absorber, and the smoke absorber is connected with a smoke exhaust pipe clamped on the upper expanding sheet, the lower expanding sheet or the side expanding sheet.

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

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

Preferably, the two ends of the shaft pins are slightly larger, the middle of the shaft pins is slightly smaller, the middle lower part of the shaft pins is solid, the middle upper part of the shaft pins is provided with a sheet which is rich in elasticity, the diameter of the edge of the sheet is slightly larger than that of the sheet, the whole shaft pins are of a dumbbell-shaped structure, and the rotary dismounting is light, convenient and practical.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses simple structure has portable effect.

2. The utility model discloses set up the open type axle sleeve on the side expansion piece, set up on the locating sleeve with this open type axle sleeve assorted pivot, as long as with the open type axle sleeve embolia in the pivot can, simple to operate.

3. The utility model discloses the manufacturing mould of position sleeve is simple, does not need during production "loose core", and the cost is low, and the drawing of patterns is convenient quick.

4. The existing dilator with side wings only forms a handle at the end, so that the connection and separation of a hook buckle are difficult to realize in clinical operation, and the operation is inconvenient; and the utility model discloses still be equipped with the spanner on the location hook, during clinical use, as long as will incline the handle of expansion piece tip and mediate with the spanner, incline the expansion piece location hook and will upwarp, very conveniently get into the location of position sleeve and detain to adjust and fix, it is more convenient to operate, has carried out fundamental change and progress to the original defect of known art, thereby has the practicality.

5. The utility model discloses the location is detained and is formed for go-between tip outside perpendicular extension to make the location detain and form on the position sleeve left and right edges, effectively increase the operation space.

6. The utility model discloses be provided with the self-destruction strip, can conveniently break the self-destruction strip fast after the operation is ended, realize destroying the shape immediately, improve the security that the apparatus used.

7. The utility model discloses can connect a smoking ware, overall structure is small and exquisite, portable, makes things convenient for medical personnel to carry the device when going out the inspection operation.

Drawings

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

fig. 2 is a schematic view of another angle configuration of an expanded state according to an embodiment of the present invention;

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

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

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

FIG. 6 is a schematic structural view of an embodiment of the present invention with a smoking device;

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

FIG. 8 is an enlarged schematic view of the circle segment of FIG. 7;

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

FIG. 10 is an enlarged schematic view of the circled portion of FIG. 9;

FIG. 11 is a partial schematic view of a self-destructive strip during destruction after use;

fig. 12 is a schematic structural view of an upper expansion plate according to an embodiment of the present invention;

fig. 13 is a schematic view of a lower expansion piece according to an embodiment of the present invention;

FIG. 14 is a schematic view of another embodiment of the present invention showing the structure of the lower expansion piece;

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

fig. 16 is a schematic structural view of a side expansion piece according to an embodiment of the present invention;

fig. 17 is a schematic structural view of a screw according to an embodiment of the present invention;

FIG. 18 is a schematic structural view of the screw rod after the destruction of the present invention;

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

wherein, 01, an upper expansion sheet, 02, a lower expansion sheet, 03, a positioning sleeve, 04, a side expansion sheet, 05, a front smoke exhaust pipe, 06, an adsorption pipe with active carbon, 07, a rear smoke exhaust pipe, 08, a smoke absorber, 01-1, an upper wing, 01-2, a press handle, 01-3, a first shaft pin, 01-4, a third shaft hole, 01-5, an upper wing positioning groove, 01-8, a press handle hole, 01-9, a clamping hook, 02-1, a lower wing, 02-2, a grab handle, 02-3, a first shaft hole, 02-7, a convex protrusion, 02-8, a grab handle side hole, 02-9, an inclined pad, 02-10, a buckle, 03-1, a connecting ring, 03-2, a third shaft pin, 03-3, a positioning buckle, 03-4, a second shaft pin, 04-1, a side wing, 04-2 and a handle, 04-3 parts of shaft sleeve, 04-4 parts of positioning hook, 04-5 parts of wrench, 09-12 parts of positioning seat, 09-13 parts of screw forward dome, 09-14 parts of screw, 09-15 parts of screw cap, 09-16 parts of self-destruction strip, 09-17 parts of self-destruction strip head cap.

Detailed Description

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

Example 1

As shown in fig. 1-4, the present embodiment provides a portable dilating device for cervical surgery, which comprises an upper dilating plate 01, a lower dilating plate 02, a lateral dilating plate 04 and a positioning sleeve 03, wherein the upper dilating plate 01 and the lower dilating plate 02 are rotatably connected and positioned by a dilating fixing mechanism 09, the positioning sleeve 03 is rotatably connected to the upper dilating plate 01, the lateral dilating plate 04 is rotatably connected to the positioning sleeve 03, the dilating angle between the upper dilating plate 01 and the lower dilating plate 02 in the maximum dilating state is greater than 40 °, the lateral dilating plate can be hidden in the space formed by the upper dilating plate 01 and the lower dilating plate 02 or can be dilated outwards to a required angle, and the angle can meet the visual field requirement of clinical surgery.

As shown in FIGS. 12-14, the upper expansion plate 01 includes an upper wing 01-1 and a pressing handle 01-2 integrated with the upper wing 01-1 and extending downward along the direction of an obtuse angle formed between one side of the upper wing 01-1, the lower expansion plate 02 includes a lower wing 02-1 and a handle 02-2 integrated with the lower wing 02-1 and extending downward along the direction of a nearly right angle formed between one side of the lower wing 02-1 and one side of the lower wing 02-1, first shaft pins 01-3 are provided on both sides of the rear end of the upper wing 01-1, and first shaft holes 02-3 corresponding to the first shaft pins 01-3 are provided on both sides of the rear end of the lower wing 02-1, so as to realize the pin connection between the upper expansion plate 01 and the lower expansion plate 02 and further realize the change of the expansion angle between the upper expansion plate 01 and the lower expansion plate 02. After the expansion angles of the upper expansion piece 01 and the lower expansion piece 02 are determined, the expansion fixing mechanisms are positioned and arranged at the side parts of the press handle 01-2 and the grab handle 02-2.

As shown in fig. 16, the side expansion piece 04 comprises a side wing 04-1, a positioning hook 04-4 and a shaft sleeve 04-3 which are arranged on the side wing 04-1, the shaft sleeve 04-3 is an open shaft sleeve, a wrench 04-5 is further arranged on the positioning hook 04-4, the end part of the side wing 04-1 is a handle 04-2, and the expansion angle of the side expansion piece 04 is rapidly adjusted 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, the other end of the positioning hook is a free end, and the wrench 04-5 is arranged at the free end so as to utilize the interaction of the handle 04-2 and the wrench 04-5 to the maximum extent. After the operation is finished, the doctor pinches the wrench 04-5 and the handle 04-2, at the moment, the wrench 04-5 pulls the positioning hook 04-4 and lightly disengages from the positioning buckle 03-3 by utilizing the elastic action of the positioning hook, and the side wing 04-1 is easily retracted between the upper expansion piece and the lower expansion piece.

As shown in FIG. 15, the positioning sleeve 03 comprises a connecting ring 03-1 nested on the upper expansion plate 01, the connecting ring 03-1 is connected with a third shaft hole 01-4 on the upper expansion plate 01 through a third shaft pin 03-2, 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 and connected with the shaft sleeve 04-3. The third shaft pin 03-2 is arranged on the inner side surface of the end part of the connecting ring 03-1, the positioning buckle 03-3 is arranged on the outer side surface of the end part of the connecting ring 03-1, and the second shaft pin 03-4 is vertically arranged on the positioning buckle 03-3. The positioning buckle 03-3 is formed by vertically extending the end part of the connecting ring 03-1 outwards, so that the positioning buckle 03-3 is formed on the left edge and the right edge of the positioning sleeve, and the inner diameter distance of the side expansion sheet during maximum gear expansion is effectively increased.

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

As shown in fig. 4, the upper expansion piece 01 is provided with a hook 01-9, the lower expansion piece 02 is provided with a buckle 02-10 corresponding to the hook 01-9, and the connection between the upper expansion piece 01 and the lower expansion piece 02 is further realized. Preferably, the lower expansion piece 02 is further provided with a snap baffle which plays a role of blocking the hooks 01-9 to prevent over expansion, and the position of the snap baffle is set according to needs.

Referring to fig. 7-10, the expansion fixing mechanism 09 is a spiral fixing mechanism, and includes a positioning seat 09-12 and a spiral fixing member integrally formed on the positioning seat 09-12, the positioning seat 09-12 is connected to a side hole 02-8 of a grip of the lower expansion plate 02 through an inclined pad 02-9, and the upper expansion plate 01 is provided with a grip hole 01-8 for passing through and fixing the spiral fixing member, so as to facilitate expansion, adjustment and fixing according to the size of the field to be inspected or the operation range.

In this embodiment, as shown in fig. 17, the spiral fixing member includes a screw 09-14 and a nut 09-15, the screw 09-14 extends upward from the positioning seat 09-12, sequentially passes through the handle side hole 02-8 and the handle pressing hole 01-8, and then is connected with the nut 09-15, and the expansion angle between the upper wing 01-1 and the lower wing 02-1 is fixed by adjusting the nut 09-15 at different positions on the screw 09-14. The diameter of the screw cap 09-15 is larger than the width of the handle hole 01-8, so that the screw cap can be conveniently clamped.

The shaft pins in the device are of a structure with two slightly larger ends, a slightly smaller middle part, a solid middle lower part, a split piece at the middle upper part, high elasticity, and a dumbbell-like structure with the edge diameter of the split piece slightly larger than that of the split piece. Especially, the second shaft pin is convenient to realize the disassembly and assembly of the side expansion piece.

Example 2

In the portable dilating apparatus for cervical surgery provided in this embodiment, the middle portion of the outer side of the connecting ring 03-1 of the positioning sleeve 03 is provided with a protrusion for moving the positioning sleeve up and down to change the position of the side dilating blades. The rest is the same as example 1.

Example 3

In the portable dilating device applied to cervical surgery provided by the embodiment, the middle part of the outer side of the connecting ring 03-1 of the locating sleeve 03 is arranged to be in the shape of a groove, so that the upper and lower positions of the locating sleeve are conveniently moved, the position of the side dilating piece is further changed, and the smoke exhaust pipe can be conveniently placed in the shape of the groove. The groove shape can be arranged up and down simultaneously. The rest is the same as example 1.

Example 4

As shown in fig. 7-10, in the portable dilating device for cervical surgery provided by this embodiment, a self-destructive strip 09-16 is further integrally formed on the positioning seat 09-12, one of the self-destructive strip 09-16 and the fixing member is an elastic member, the positioning seat 09-12 is more firmly fixed in the handle side hole 02-8 and the inclined pad 02-9 by the front and rear tension of the self-destructive strip 09-16 and the fixing member, and the dilating positioning function for fixing the opened state of the upper wing 01-1 and the lower wing 02-1 and the destructing function that can be destructed after use are completely and skillfully combined together. The remainder of the process is the same as in any one of examples 1 to 3.

The self-destruction strip 09-16 is a strip which is short, small and slightly inclined forwards as a whole, the front side of the strip is tightly attached to the front wall of the side hole 02-8 of the grab handle, the rear side of the strip is provided with a fixing piece, and the end part of the fixing piece is provided with a push handle 09-18. When the dilator is used and is closed to the state shown in figure 7, the push handle 09-18 is pushed down, the self-destruction strip 09-16 is forced by the push handle 09-18 and the fixing piece, the root of the self-destruction strip 09-16 is immediately broken due to the extrusion of the front wall of the side hole 02-8 of the handle, as shown in figure 11, the fixing piece is forced by the push handle 09-18 and the fixing piece, the root of the self-destruction strip 09-16 is immediately broken due to the impact force when the positioning seat 09-12 slips through the lever action of the positioning seat 09-12 and the inclined pad 02-9, as shown in figure 11, the fracture of the root of the self-destruction strip 09-16 is almost performed simultaneously 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 fixing piece loses position due to the slipping of the positioning seat 09-12, the expansion and the positioning functions of, the broken part of the self-destruction strip 09-16 is almost at the root part and is similar to the shape of a fracture, so that the self-destruction strip 09-16 is still connected with the positioning seat 09-12 and cannot fall down independently even though broken; the fixing piece is also connected with the positioning seats 09-12 after being out of position and can not fall down independently, so that the fixing piece is also an integral dilator when a doctor takes out the fixing piece, just like a disposable vaginal dilator without an instant device, and therefore, the fixing piece is simple and labor-saving in operation, convenient, practical, safe and effective.

If the fixing part is a spiral fixing part, as shown in fig. 17, the bottom of the screw 09-14 is provided with a screw front dome 09-13 for arranging the self-destruction strip 09-16, and the bending structure and the position relationship of the destroyed screw and the self-destruction strip are shown in fig. 18.

Example 5

In the portable dilating device applied to cervical surgery provided by the embodiment, the head end of the self-destroying strip 09-16 extends forwards to form the crown 09-17, so that the self-destroying strip 09-16 with the crown 09-17 is transversely similar to a '7' shape and is correspondingly just lapped with the convex protrusion 02-7 positioned in front of the handle side hole 02-8 in the middle of the side edge of the handle 02-2, the self-destroying strip 09-16 with the crown 09-17 is easier to break and self-destruct when being pressed by the front wall of the handle side hole 02-8, and when the self-destroying strip 09-16 with the crown 09-17 is pressed and broken, the fracture is still at the root, so that the operation is also time-saving, labor-saving, simple, convenient, safe and effective. The rest is the same as example 4.

Example 6

As shown in fig. 6 or fig. 19, the portable dilating apparatus for cervical surgery provided in this embodiment is further connected with a smoke sucker 08, the smoke sucker 08 is connected with a smoke exhaust pipe clamped on the upper dilating blade 01, the lower dilating blade 02 or the side dilating blade 04, and the smoke exhaust pipe is provided with a filter element. In this embodiment, the filter element is an adsorption tube 06 with activated carbon, and specifically, the smoke absorber 08 may be connected to the rear smoke exhaust tube 07, the adsorption tube 06 with activated carbon, and the front smoke exhaust tube 05 in sequence. The remainder of the examples are the same as in any of examples 1 to 5.

Example 7

The portable cervical dilation device of this embodiment has two side dilation pieces 04, as shown in fig. 5. In the embodiment, the arrangement mode of the positioning buckles on the left edge and the right edge of the positioning sleeve enables the internal diameter distance of the expanded maximum gear of the left side expansion piece and the right side expansion piece to be larger than 88mm (30 mm is increased compared with the prior art), so that the clinical use value is high, the operation space can be effectively increased, the operation space is safe, effective and practical, and the fundamental improvement and progress effects are achieved. The remainder of the examples are the same as in any of examples 1 to 6.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims (10)

1. A portable expansion device applied to cervical surgery comprises an upper expansion sheet, a lower expansion sheet, at least one side expansion sheet and a positioning sleeve, wherein the upper expansion sheet and the lower expansion sheet are rotatably connected and positioned by an expansion fixing mechanism, the positioning sleeve is rotatably connected with the upper expansion sheet, the side expansion sheet is rotatably connected on the positioning sleeve,

the side expansion piece comprises a side wing, a positioning hook and a shaft sleeve, the positioning hook and the shaft sleeve are arranged on the side wing, the positioning sleeve comprises a connecting ring which is arranged on the upper expansion piece in a nested mode, a positioning buckle corresponding to the positioning hook and a second shaft pin in matched connection with the shaft sleeve are arranged at the end portion of the connecting ring, the shaft sleeve is an open type shaft sleeve, a wrench matched with a handle located at the end portion of the side wing is further arranged on the positioning hook, and the expansion fixing mechanism is a spiral fixing mechanism.

2. The portable cervical dilation device according to claim 1, wherein the positioning hook is fixed to the side wing at one end, and is a free end at the other end, and the wrench is disposed at the free end.

3. The portable cervical dilation device according to claim 1, wherein the inner side of the connecting ring end is provided with a third axle pin for connecting with the upper dilation piece, the positioning button is arranged on the outer side of the connecting ring end, and the second axle pin is vertically mounted on the positioning button.

4. The portable cervical dilation device according to claim 1, wherein the positioning button is formed by extending the end of the connection ring vertically outward, so that the positioning button is formed on the left and right edges of the positioning sleeve.

5. The portable cervical dilation device according to claim 1, wherein a shifting member for shifting the position of the positioning sleeve is disposed in the middle of the connection ring.

6. The portable cervical dilation device according to claim 1, wherein the screw fixation mechanism comprises a positioning seat and a screw fixation member integrally formed on the positioning seat, the positioning seat is connected to the lower dilation piece at a position beside the handle through a cushion, and the upper dilation piece is provided with a handle hole for passing through and fixing the screw fixation member.

7. The portable cervical dilation device according to claim 6, wherein the positioning seat further comprises a self-destruction strip integrally formed thereon, wherein one of the self-destruction strip and the fixing member is an elastic member, and the positioning seat is fixed in the side hole of the handle and the cushion by the front and rear tension of the self-destruction strip and the fixing member.

8. The portable cervical dilation device according to claim 7, wherein the self-destruction strip tip has a self-destruction strip crown, which is engaged with the side wall of the side hole of the handle.

9. The portable cervical dilation device according to claim 1, wherein a smoke sucker is connected to the dilation device, and the smoke sucker is connected to a smoke exhaust pipe clamped on the upper dilation piece, the lower dilation piece or the side dilation pieces.

10. The portable dilating device of claim 9 applied to cervical surgery, wherein the smoke exhaust tube is provided with a filter element.

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