CN113713238A - Anorectal surgical operation instrument and using method thereof - Google Patents

Abstract

The invention provides an anorectal surgical operation instrument and a using method thereof, the anorectal surgery is a very important medical treatment branch, and the anal part is required to be expanded in the process of treating anal fissure diseases in the anorectal surgery, and the most traditional way is that a doctor completes the process by fingers. The structure of the invention comprises an extension body, a supporting connection structure, an expanding structure and a rotary driving component; the diameter expanding structure can realize the neck expanding effect on the anus part through the expanding effect of the sheet body structure, and meanwhile, the whole diameter expanding structure, particularly the sheet body structure, forms a slow rotating effect through the driving effect of the rotating motor so as to realize a better diameter expanding effect. In addition, the driving effect on the driving head and the sliding plate is realized in the rotating process through the arrangement of the inclined bending driving groove.

Description

Anorectal surgical operation instrument and using method thereof

Technical Field

The invention relates to an instrument structure for medical operation, in particular to an instrument for anorectal surgery and a using method thereof.

Background

Anorectal surgery is a very important branch of medical treatment, and expansion of the anal region is often required during the treatment of anal fissure diseases in anorectal surgery, and the most traditional way is that a doctor completes the process by fingers. And it is necessary to add some lubricating fluid with assistance and give a massage appropriately and then gradually complete the dilation of the anal region.

In order to implement the mechanized operation instead of the manual operation, some special instruments or instruments have been developed in the prior art to assist the doctor in performing the procedure, however, the existing device is generally simple in structure and single in function, and particularly cannot implement the combined structure of the expanding and the rotating massage, and if the dual functions of the expanding and the rotating massage can be implemented, the procedure becomes easier and simpler, and the obtained effect is better.

Disclosure of Invention

In order to solve the problems in the prior art, the invention provides a structure device and a method which are suitable for an expanding structure of an anus part and realize double combination of expanding and rotating functions.

The invention provides an anorectal surgical operation instrument which comprises an inserting body, a supporting and connecting structure, an expanding structure and a rotary driving assembly, wherein the inserting body is provided with a first end and a second end;

the extending body comprises a plurality of separable sheet structures, each sheet structure comprises a horizontal plate part and an inclined plate part, and the inclined plate parts form a vertebral body structure;

the supporting and connecting structure is provided with a cross-shaped plate, a sliding plate and a driving head, the driving head is arranged on the sliding plate, the sliding plate is slidably arranged in a cross-shaped sliding chute of the cross-shaped plate, and the outer end part of the sliding plate is connected with the flat plate part of the sheet structure;

the diameter expanding structure is arranged in the extending body and comprises a rotating plate and a driving motor, an output shaft of the driving motor penetrates through a central hole of the cross-shaped plate and is connected with the rotating plate, a plurality of groups of inclined bending driving grooves arranged around the central hole are formed in the rotating plate, and the driving heads are clamped in the inclined bending driving grooves;

the rotary driving assembly is provided with a holding rod, a rotary motor, a transmission structure and a connecting column which are sequentially connected, the connecting column is connected with the cross-shaped plate, and the rotary motor is used for driving the cross-shaped plate and the sheet structure to rotate.

The beneficial effect of above-mentioned scheme does: the diameter expanding structure can realize the neck expanding effect on the anus part through the expanding effect of the sheet body structure, and meanwhile, the whole diameter expanding structure, particularly the sheet body structure, forms a slow rotating effect through the driving effect of the rotating motor so as to realize a better diameter expanding effect. In addition, the driving effect on the driving head and the sliding plate is realized in the rotating process through the arrangement of the inclined bending driving groove.

One preferred scheme is that the sheet structure and the obliquely-arranged bending driving grooves are four groups, and the obliquely-arranged bending grooves of each group are correspondingly clamped with the driving heads of one group; the end parts of the inclined plate parts of the four groups of sheet structures form a closing structure; one side of the rotating plate, which is close to the closing structure, is provided with a rotating rod body, and the end part of the rotating rod body is provided with an image acquisition head.

Preferably, the transmission structure comprises a first section and a second section, the first section comprises a first fixed column and three first connecting shafts and first springs which are arranged in parallel, the first springs are arranged in first slots of the first fixed column, and the inner ends of the first connecting shafts are connected with the first springs; the second section comprises a second fixing column, three second connecting shafts and a second spring which are arranged in parallel, the second spring is arranged in a second slotted hole of the second fixing column, the inner end of the second connecting shaft is connected with the second spring, the first connecting shaft and the second connecting shaft are connected at a hinge point, and the angle of the extending direction between the first connecting shaft and the second connecting shaft can be adjusted; one side of the holding rod is provided with a bent plate body, and the rotating motor is arranged on the bent plate body.

The beneficial effect of above-mentioned scheme does: the purpose that the patient expands the diameter by oneself is realized through the structure, namely the user can hold the holding rod by hand, then carry out angle adjustment to first festival section and second festival section, make the extending direction between them adjust to suitable angle like this, then insert the portion of stretching into the anus position, and through the operation to the gripping of holding the rod and controlling means, start and stop of control diameter expansion process and rotation process promptly, it is more convenient to use, and in time adjusted the positional relationship of two festival sections, because the hookup point is universal transmission structure and has realized the transmission transportation. The use effect of single-person operation without assistance of a second person is realized.

Preferably, a rotary massage structure is arranged between the second fixing column and the sheet structure, and the rotary massage structure is provided with a central connecting part and a plurality of laterally extending convex massage blocks.

One preferred scheme is that the sheet structure and the obliquely-arranged bending driving grooves are four groups, and the obliquely-arranged bending grooves of each group are correspondingly clamped with the driving heads of one group; the end parts of the inclined plate parts of the four groups of sheet structures form a closing structure;

the rotor plate is close to one side of binding off structure has the rotatory body of rod, the inside of the rotatory body of rod has the liquid medicine bucket, lubricating liquid has in the liquid medicine bucket, the liquid medicine bucket has a liquid tubule and one-way head of admitting air, one-way head of admitting air is through the intake pipe with press the gasbag and be connected, press the gasbag setting and be in put one side in crooked groove to one side, it is right in the motion process to drive the head press the gasbag and press, the export of liquid tubule is located the rotatory body of rod is close to one side of binding off structure.

The beneficial effect of above-mentioned scheme does: the pressing air bag in the side wall can be pressed by driving the head to move in the process of neck expanding, so that the liquid in the liquid medicine barrel flows out and is sprayed to the anus part, and a better lubricating and expanding effect is achieved.

The invention provides a using method of an anorectal surgical operation instrument, which comprises the following steps:

firstly, keeping a plurality of sheet structures in a storage state, and then gradually inserting the inserted body into the anus;

then, the expanding structure starts to work, namely the driving motor provides power to correspondingly rotate the rotating plate, when the rotating plate rotates, the driving head and the sliding plate are clamped and driven to move towards the outer end direction along the cross plate groove by the aid of the obliquely bent driving groove, and then the sliding plate drives the sheet body structure to move towards the outer end direction to achieve the expanding effect;

in addition, the rotary driving assembly provides rotating power, namely a user holds the holding rod by hand, the rotary motor provides power and transmits the power to the connecting column through the transmission structure, and the connecting column drives the cross-shaped plate to rotate so as to drive the plate body structure to realize circumferential rotation.

Preferably, the transmission structure comprises a first section and a second section, the first section comprises a first fixed column and three first connecting shafts and first springs which are arranged in parallel, the first springs are arranged in first slots of the first fixed column, and the inner ends of the first connecting shafts are connected with the first springs; the second section comprises a second fixing column, three second connecting shafts and a second spring which are arranged in parallel, the second spring is arranged in a second slotted hole of the second fixing column, the inner end of the second connecting shaft is connected with the second spring, the first connecting shaft and the second connecting shaft are connected at a hinge point, and the angle of the extending direction between the first connecting shaft and the second connecting shaft can be adjusted; a bent plate body is arranged on one side of the holding rod, and the rotating motor is arranged on the bent plate body;

the using method comprises the following steps: the rotary motor transmits power to a first fixing column of a first section, then the three first connecting shafts are driven to rotate through the first fixing columns, when the first connecting shafts rotate, the second connecting shafts and the second fixing columns are driven to rotate through hinge points, so that the extending body on the downstream side can rotate, the angle of the extending direction of the first section and the angle of the extending direction of the second section can be changed and adjusted through the hinge points, after the angle is adjusted, a user holds a holding part with hands to realize the driving control of the rotary motor at a proper angle, and after an included angle is formed between the first section and the second section, the power transmission of the first section and the second section can still be realized through the action of the hinge points; in addition, during the movement process of the extending body, the acting force generated in the opposite direction generates a buffering effect through the compression and rebound of the first connecting shaft and the second connecting shaft on the first spring and the second spring.

One preferred scheme is that the sheet structure and the obliquely-arranged bending driving grooves are four groups, and the obliquely-arranged bending grooves of each group are correspondingly clamped with the driving heads of one group; the end parts of the inclined plate parts of the four groups of sheet structures form a closing structure;

the side, close to the closing-in structure, of the rotating plate is provided with a rotating rod body, a liquid medicine barrel is arranged inside the rotating rod body, lubricating liquid is arranged in the liquid medicine barrel, the liquid medicine barrel is provided with a liquid outlet tubule and a one-way air inlet head, the one-way air inlet head is connected with a pressing air bag through an air inlet pipe, the pressing air bag is arranged on one side of the inclined bending groove, the driving head presses the pressing air bag in the movement process, and the outlet of the liquid outlet tubule is located on one side, close to the closing-in structure, of the rotating rod body;

the using method comprises the following steps: in the diameter expanding process, the driving head is driven to move through the inclined bending groove, the driving head presses the pressing air bag in the moving process, so that the air bag provides pressure to enter the liquid medicine barrel through the air inlet pipe and the one-way air inlet head, and then liquid is sprayed out from the liquid outlet tubule in the liquid medicine barrel to lubricate the diameter expanding part, so that the diameter expanding effect is better realized.

Drawings

FIG. 1 is a first perspective view of the anorectal surgical instrument of the present invention;

FIG. 2 is a second perspective view of the anorectal surgical instrument of the present invention;

FIG. 3 is a third perspective view of the anorectal surgical instrument of the present invention;

FIG. 4 is a schematic view of the anorectal surgical instrument of the present invention shown from a first perspective with one of the blade structures removed;

FIG. 5 is a schematic view of the anorectal surgical instrument of the present invention shown from a second perspective with one of the lamellar structures removed;

FIG. 6 is a schematic cross-sectional view of the anorectal surgical instrument of the present invention;

FIG. 7 is a schematic cross-sectional view of another embodiment of the anorectal surgical instrument of the present invention;

FIG. 8 is an enlarged schematic view of region B in FIG. 4;

FIG. 9 is an enlarged schematic view of region C of FIG. 5;

FIG. 10 is an enlarged schematic view of region E in FIG. 6;

FIG. 11 is an enlarged schematic view of region A in FIG. 3;

FIG. 12 is an enlarged schematic view of region F of FIG. 7;

FIG. 13 is an enlarged view of the area D in FIG. 6;

fig. 14 is an enlarged schematic view of the region G in fig. 10.

Detailed Description

The first embodiment:

the invention provides an anorectal surgical instrument as shown in fig. 1-14, which comprises an inserting body 10, a support connecting structure 20, an expanding structure 30 and a rotary driving assembly 40;

the inserting body 10 comprises a plurality of separable sheet structures 11, the sheet structures 11 comprise a horizontal plate part 12 and an inclined plate part 13, and a plurality of inclined plate parts 13 form a vertebral body structure 130;

the supporting and connecting structure 20 has a cross-shaped plate 21, a sliding plate 22 and a driving head 23, the driving head 23 is disposed on the sliding plate 22, the sliding plate 22 is slidably disposed in the cross-shaped sliding slot 210 of the cross-shaped plate 21, and the outer end 221 of the sliding plate 22 is connected with the flat plate portion 12 of the sheet body structure 11;

the diameter expanding structure 30 is arranged inside the extending body 10, the diameter expanding structure 30 comprises a rotating plate 33 and a driving motor 32, an output shaft of the driving motor 32 passes through a central hole 212 of the cross-shaped plate 21 and is connected with the rotating plate 33, a plurality of groups of inclined bending driving grooves 331 arranged around the central hole 212 are arranged on the rotating plate 33, and the driving heads 23 are clamped in the inclined bending driving grooves 331;

the rotary driving assembly 40 has a holding rod 41, a rotary motor 42, a transmission structure 43 and a connecting column 44 which are connected in sequence, the connecting column 44 is connected with the cross-shaped plate 21, and the rotary motor 42 is used for driving the cross-shaped plate 21 and the sheet structure 11 to rotate.

Preferably, the sheet structure 11 and the inclined bending driving grooves 331 are four groups, and the inclined bending grooves 331 of each group are correspondingly engaged with the driving heads 23 of one group; the end positions of the inclined plate parts 13 of the four groups of sheet structures 11 form closing-in structures 14; the rotating plate 33 has a rotating rod 50 on a side thereof close to the closing structure 14, and an image capturing head 51 is disposed at an end of the rotating rod 50.

A rotary massage structure 60 is disposed between the second fixing posts 437 and the sheet structure 11, and the rotary massage structure 60 has a central connecting portion 61 and a plurality of laterally extending convex massage blocks 62.

The invention provides a using method of an anorectal surgical operation instrument, which comprises the following steps:

firstly, keeping a plurality of sheet structures 11 in a storage state, and then gradually inserting the inserting body 10 into the anus;

then, the expanding structure 30 starts to work, that is, the driving motor 32 provides power to correspondingly rotate the rotating plate 33, when the rotating plate 33 rotates, the driving head 23 and the sliding plate 22 are engaged and driven to move towards the outer end direction along the cross-shaped plate groove 210 by the obliquely bent driving groove 331, and then the sliding plate 22 drives the sheet structure 11 to move towards the outer end direction to realize the expanding effect;

in addition, the rotation driving assembly 40 provides rotation power, that is, a user holds the holding rod 41 by hand, the rotation motor 42 provides power, and transmits the power to the connecting column 44 through the transmission structure 43, and the connecting column 44 drives the cross-shaped plate 21 to rotate, thereby driving the sheet structure 11 to rotate circumferentially.

The diameter expanding structure can realize the neck expanding effect on the anus part through the expanding effect of the sheet body structure, and meanwhile, the whole diameter expanding structure, particularly the sheet body structure, forms a slow rotating effect through the driving effect of the rotating motor so as to realize a better diameter expanding effect. In addition, the driving effect on the driving head and the sliding plate is realized in the rotating process through the arrangement of the inclined bending driving groove.

Second embodiment:

in a preferred embodiment, the transmission structure 43 of the present embodiment includes a first section 431 and a second section 432, the first section 431 includes a first fixing column 433 and three first connecting shafts 434 and first springs 435 arranged in parallel, the first springs 435 are disposed in the first slots 436 of the first fixing column 433, and the inner ends of the first connecting shafts 434 are connected with the first springs 435; the second section 432 includes a second fixing column 437 and three second connecting shafts 438 and a second spring 439 which are arranged in parallel, the second spring 439 is disposed in the second slot 430 of the second fixing column 437, the inner end of the second connecting shaft 438 is connected with the second spring 439, the first connecting shaft 434 is connected with the second connecting shaft 438 at a hinge point, and the angle of the extending direction between the first connecting shaft 434 and the second connecting shaft 438 can be adjusted; a bending plate 410 is arranged on one side of the holding rod 41, and the rotating motor 42 is arranged on the bending plate 410;

the using method comprises the following steps: the rotating motor 42 transmits power to the first fixing column 433 of the first section 431, then the three first connecting shafts 434 are driven to rotate by the first fixing columns 433, when the first connecting shafts 434 rotate, the second connecting shafts 438 and the second fixing columns 437 are driven to rotate by the hinge points, so that the extending body 10 on the downstream side can rotate, the angles of the extending directions of the first section 431 and the second section 432 are changed and adjusted by the hinge points, after the adjustment, the user holds the holding part 41 to realize the driving control of the rotating motor 42 at a proper angle, and when an included angle is formed between the first section 431 and the second section 432, the power transmission to the first section 431 and the second section 432 can still be realized by the action of the hinge points; in addition, during the movement of the inserting body 10, the reaction force generated in the opposite direction generates a buffering effect by the compression rebound of the first and second connecting shafts 434 and 438 on the first and second springs 435 and 439.

The purpose that the patient expands the diameter by oneself is realized through the structure, namely the user can hold the holding rod by hand, then carry out angle adjustment to first festival section and second festival section, make the extending direction between them adjust to suitable angle like this, then insert the portion of stretching into the anus position, and through the operation to the gripping of holding the rod and controlling means, start and stop of control diameter expansion process and rotation process promptly, it is more convenient to use, and in time adjusted the positional relationship of two festival sections, because the hookup point is universal transmission structure and has realized the transmission transportation. The use effect of single-person operation without assistance of a second person is realized.

The third embodiment:

the sheet structure 11 and the inclined bending driving grooves 331 are four groups, and the inclined bending grooves 331 of each group are correspondingly clamped with the driving heads 23 of one group; the end positions of the inclined plate parts 13 of the four groups of sheet structures 11 form closing-in structures 14;

the rotating plate 33 is provided with a rotating rod body 50 on one side close to the closing-in structure 14, a liquid medicine barrel 52 is arranged inside the rotating rod body 50, lubricating liquid is contained in the liquid medicine barrel 52, the liquid medicine barrel 52 is provided with a liquid outlet tube 53 and a one-way air inlet head 54, the one-way air inlet head 54 is connected with a pressing air bag 56 through an air inlet tube 55, the pressing air bag 56 is arranged on one side of the inclined bending groove 331, the driving head 23 presses the pressing air bag 56 in the movement process, and the outlet of the liquid outlet tube 53 is located on one side of the rotating rod body 50 close to the closing-in structure 14; the pressing air bag in the side wall can be pressed by driving the head to move in the process of neck expanding, so that the liquid in the liquid medicine barrel flows out and is sprayed to the anus part, and a better lubricating and expanding effect is achieved.

The using method comprises the following steps: in the process of expanding the diameter, the driving head 23 is driven to move by the inclined bending groove 331, and the driving head 23 presses the pressing air bag 56 in the moving process, so that the air bag 56 provides pressure to enter the liquid medicine barrel 52 through the air inlet pipe 55 and the one-way air inlet head 54, and then liquid is sprayed out from the liquid outlet tubule 53 in the liquid medicine barrel 52 to lubricate the diameter expanding part, so as to better realize the diameter expanding effect.

Claims (8)

1. An anorectal surgical instrument comprising:

the extension body comprises a plurality of separable sheet structures, each sheet structure comprises a horizontal plate part and an inclined plate part, and the inclined plate parts form a vertebral body structure;

the supporting and connecting structure is provided with a cross-shaped plate, a sliding plate and a driving head, the driving head is arranged on the sliding plate, the sliding plate is slidably arranged in a cross-shaped sliding groove of the cross-shaped plate, and the outer end part of the sliding plate is connected with the flat plate part of the sheet structure;

the diameter expanding structure is arranged in the extending body and comprises a rotating plate and a driving motor, an output shaft of the driving motor penetrates through a central hole of the cross-shaped plate and is connected with the rotating plate, a plurality of groups of inclined bending driving grooves arranged around the central hole are formed in the rotating plate, and the driving heads are placed in the inclined bending driving grooves in a clamping mode;

the rotary driving assembly is provided with a holding rod, a rotary motor, a transmission structure and a connecting column which are sequentially connected, the connecting column is connected with the cross-shaped plate, and the rotary motor is used for driving the cross-shaped plate and the sheet structure to rotate.

2. The anorectal surgical instrument of claim 1 wherein the blade structure and the oblique curved driving groove are four groups, and the oblique curved groove of each group is correspondingly engaged with the driving head of each group; the end parts of the inclined plate parts of the four groups of sheet structures form a closing structure;

one side of the rotating plate, which is close to the closing structure, is provided with a rotating rod body, and the end part of the rotating rod body is provided with an image acquisition head.

3. The anorectal surgical instrument of claim 1 wherein the transmission structure comprises a first section and a second section, wherein the first section comprises a first fixing column and three first connecting shafts and a first spring which are arranged in parallel, the first spring is arranged in a first slot of the first fixing column, and the inner end of the first connecting shaft is connected with the first spring;

the second section comprises a second fixing column, three second connecting shafts and a second spring which are arranged in parallel, the second spring is arranged in a second slotted hole of the second fixing column, the inner end of the second connecting shaft is connected with the second spring, the first connecting shaft and the second connecting shaft are connected at a hinge point, and the angle of the extending direction between the first connecting shaft and the second connecting shaft can be adjusted;

one side of the holding rod is provided with a bent plate body, and the rotating motor is arranged on the bent plate body.

4. The anorectal surgical instrument of claim 1 wherein a position between the second fixation post and the lamellar structure is provided with a rotary massage formation having a central connection and a plurality of laterally extending raised massage blocks.

5. The anorectal surgical instrument of claim 1 wherein the blade structure and the oblique curved driving groove are four groups, and the oblique curved groove of each group is correspondingly engaged with the driving head of each group; the end parts of the inclined plate parts of the four groups of sheet structures form a closing structure;

the rotor plate is close to one side of binding off structure has the rotatory body of rod, the inside of the rotatory body of rod has the liquid medicine bucket, lubricating liquid has in the liquid medicine bucket, the liquid medicine bucket has a liquid tubule and one-way head of admitting air, one-way head of admitting air is through the intake pipe with press the gasbag and be connected, press the gasbag setting and be in put one side in crooked groove to one side, it is right in the motion process to drive the head press the gasbag and press, the export of liquid tubule is located the rotatory body of rod is close to one side of binding off structure.

6. The method of using an anorectal surgical instrument of claim 1 wherein the method comprises the steps of:

firstly, keeping a plurality of sheet structures in a storage state, and then gradually inserting the inserted body into the anus;

then, the expanding structure starts to work, namely the driving motor provides power to correspondingly rotate the rotating plate, when the rotating plate rotates, the driving head and the sliding plate are clamped and driven to move towards the outer end direction along the cross plate groove by the aid of the obliquely bent driving groove, and then the sliding plate drives the sheet body structure to move towards the outer end direction to achieve the expanding effect;

in addition, the rotary driving assembly provides rotating power, namely a user holds the holding rod by hand, the rotary motor provides power and transmits the power to the connecting column through the transmission structure, and the connecting column drives the cross-shaped plate to rotate so as to drive the plate body structure to realize circumferential rotation.

7. The anorectal surgical instrument of claim 1 wherein the transmission structure comprises a first section and a second section, wherein the first section comprises a first fixing column and three first connecting shafts and a first spring which are arranged in parallel, the first spring is arranged in a first slot of the first fixing column, and the inner end of the first connecting shaft is connected with the first spring; the second section comprises a second fixing column, three second connecting shafts and a second spring which are arranged in parallel, the second spring is arranged in a second slotted hole of the second fixing column, the inner end of the second connecting shaft is connected with the second spring, the first connecting shaft and the second connecting shaft are connected at a hinge point, and the angle of the extending direction between the first connecting shaft and the second connecting shaft can be adjusted; a bent plate body is arranged on one side of the holding rod, and the rotating motor is arranged on the bent plate body;

the using method comprises the following steps: the rotary motor transmits power to a first fixing column of a first section, then the three first connecting shafts are driven to rotate through the first fixing columns, when the first connecting shafts rotate, the second connecting shafts and the second fixing columns are driven to rotate through hinge points, so that the extending body on the downstream side can rotate, the angle of the extending direction of the first section and the angle of the extending direction of the second section can be changed and adjusted through the hinge points, after the angle is adjusted, a user holds a holding part with hands to realize the driving control of the rotary motor at a proper angle, and after an included angle is formed between the first section and the second section, the power transmission of the first section and the second section can still be realized through the action of the hinge points; in addition, during the movement process of the extending body, the acting force generated in the opposite direction generates a buffering effect through the compression and rebound of the first connecting shaft and the second connecting shaft on the first spring and the second spring.

8. Use of an anorectal surgical instrument according to claim 6 wherein said blade structure and said oblique curved actuation grooves are four sets, said oblique curved grooves of each set engaging with said actuation heads of a set correspondingly; the end parts of the inclined plate parts of the four groups of sheet structures form a closing structure;

the side, close to the closing-in structure, of the rotating plate is provided with a rotating rod body, a liquid medicine barrel is arranged inside the rotating rod body, lubricating liquid is arranged in the liquid medicine barrel, the liquid medicine barrel is provided with a liquid outlet tubule and a one-way air inlet head, the one-way air inlet head is connected with a pressing air bag through an air inlet pipe, the pressing air bag is arranged on one side of the inclined bending groove, the driving head presses the pressing air bag in the movement process, and the outlet of the liquid outlet tubule is located on one side, close to the closing-in structure, of the rotating rod body;

the using method comprises the following steps: in the diameter expanding process, the driving head is driven to move through the inclined bending groove, the driving head presses the pressing air bag in the moving process, so that the air bag provides pressure to enter the liquid medicine barrel through the air inlet pipe and the one-way air inlet head, and then liquid is sprayed out from the liquid outlet tubule in the liquid medicine barrel to lubricate the diameter expanding part, so that the diameter expanding effect is better realized.

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