CN211834652U

CN211834652U - Disposable cervical dilatation sacculus pipe

Info

Publication number: CN211834652U
Application number: CN201921893730.3U
Authority: CN
Inventors: 曾维著
Original assignee: Jiangxi Yitong Medical Device Industry Co ltd
Current assignee: Jiangxi Yitong Medical Device Industry Co ltd
Priority date: 2019-11-05
Filing date: 2019-11-05
Publication date: 2020-11-03
Anticipated expiration: 2029-11-05

Abstract

The utility model provides a disposable cervical dilatation sacculus pipe, including the pressurization subassembly and the expansion sacculus that are connected, when carrying out cervical dilatation, through the guide effect of seal wire, will hose assembly follows coupling assembling, sufficient head and expansion subassembly get into in the vagina, pressurization subassembly to fill gas or liquid in the expansion sacculus, gas or liquid loop through conduction channel, connecting channel and fill the medium passageway and get into in the expansion subassembly, the expansion subassembly expands to the outside in order to realize the expansion to the cervix, thereby slowly enlarges the disposable size that ensures to operate and go on smoothly of cervix to the cervix, alleviates patient's pain, reduces the damage to the cervical mucosa, goes on smoothly in order to ensure the safety of expanding the palace process; when cervical dilatation finishes, extract the seal wire under the elastic restoring force of silica gel adaptor and silica gel plug, the silica gel plug is sealed by oneself, will through folding silica gel extrusion pipe the expansion sacculus is kept somewhere in the vagina.

Description

Disposable cervical dilatation sacculus pipe

Technical Field

The utility model relates to the technical field of medical equipment, in particular to a disposable cervical dilatation sacculus pipe.

Background

In the case of birth control surgery, gynecological examination or surgery of the vulvar uterus and appendages, the cervical canal must be dilated in order to be able to adapt better to the needs of the surgery. At present, the method for dilating the cervical canal in the prior art is as follows: the uterine neck is inserted into and pulled out of the uterine neck in sequence from small to large by adopting metal or plastic uterine-dilating rods with different diameters, the uterine neck is subjected to hard dilation to reach the size of the uterine neck opening for operation, the operation of a doctor is very complicated, and the injury of the uterine neck mucosa can be caused; or adopts a uterus dilating instrument made of certain materials, and the uterus dilating instrument can dilate the cervical canal by wetting cervical mucus, and the method is related to the secretion of the cervix, has poor dilating effect and is not beneficial to the safe and smooth operation process. In addition, the instruments used in the existing methods for dilating the cervical canal by using the metal or plastic cervical dilator cannot be left in the vagina.

SUMMERY OF THE UTILITY MODEL

Based on this, the utility model aims at providing a disposable cervical dilatation sacculus pipe, easy operation can once only slowly enlarge the cervical to the size of ensureing that the operation goes on smoothly, alleviates patient's pain, reduces the damage to the cervical mucosa to ensure that the safety of expanding the uterus process goes on smoothly, can also keep somewhere simultaneously in the vagina.

A disposable cervical dilatation balloon catheter comprises a pressurizing assembly and an dilatation balloon which are connected, wherein the dilatation balloon comprises a guide wire connected with the pressurizing assembly, a hose assembly connected with the guide wire, a connecting assembly connected with the hose assembly, an dilatation assembly arranged in the connecting assembly, and a filling head, one end of the filling head is arranged in the connecting assembly, the other end of the filling head penetrates through the dilatation assembly and extends the length of the dilatation assembly, and a medium filling channel is arranged at one end of the filling head facing the guide wire;

the tail end of the guide wire penetrates through the hose assembly and props against the connecting assembly, and a conduction channel is arranged in the guide wire;

the connecting component is provided with a connecting channel which is communicated with the conducting channel and the medium filling channel,

hose assembly includes the silica gel adaptor, the inside silica gel plug that is equipped with of one end of silica gel adaptor, silica gel extrusion pipe is connected to the other end, the other one end of silica gel extrusion pipe with coupling assembling joint when cervical dilatation finishes, extracts the seal wire under the elastic restoring force of silica gel adaptor and silica gel plug, the silica gel plug is sealed by oneself, through folding the silica gel extrusion pipe will the expansion sacculus is kept somewhere.

Compared with the prior art, in the disposable cervical dilatation balloon catheter, when cervical dilatation is performed, the hose assembly is led to enter the vagina along with the connecting assembly, the filling head and the dilatation assembly through the guiding effect of the guide wire, the pressurizing assembly is used for filling gas or liquid into the dilatation balloon, the gas or liquid sequentially passes through the conduction channel, the connection channel and the medium filling channel to enter the dilatation assembly, and the dilatation assembly is expanded outwards to realize cervical dilatation, so that the cervix is slowly expanded to the size ensuring smooth operation, pain of a patient is relieved, and damage to the cervical mucosa is reduced to ensure safe and smooth operation of the cervical dilatation process; when cervical dilatation finishes, extract the seal wire under the elastic restoring force of silica gel adaptor and silica gel plug, the silica gel plug is sealed by oneself, will through folding silica gel extrusion pipe the expansion sacculus is kept somewhere in the vagina.

Further, the silica gel stopper is including the chock plug that is connected and embedding stopper post in the silica gel adaptor, be equipped with on the terminal surface of chock plug towards the guiding hole that the stopper post extends, before using, the end entering of seal wire the guiding hole pierces the stopper post gets into in the silica gel extrusion pipe.

Furthermore, a plurality of reinforcing ribs are arranged on the outer wall of the plug column, and the tail end of the plug column is arc-shaped.

Further, the silica gel adaptor comprises a first adaptor and a second adaptor which are connected, a first adaptor hole is arranged in the first adaptor, a second adaptor hole is arranged in the second adaptor, wherein,

the first transfer hole hoops the plug column tightly, and the first transfer hole and the plug column are in interference fit;

the second adapter with the silica gel is extruded the union coupling, just the second adapter hole with the silica gel is extruded pipe UNICOM.

Furthermore, the connecting assembly comprises a connecting cap, a connecting rod and a connecting screw for connecting the connecting cap and the connecting rod, the connecting screw is of a hollow structure, one end of the connecting screw clamps the silica gel extrusion tube in the connecting cap, and the other end of the connecting screw clamps the common end of the expansion assembly and the filling head in the connecting rod;

a cap channel is arranged in the connecting cap, a screw channel is arranged in the connecting screw, and the screw channel is communicated with the cap channel to form the connecting channel.

Further, the connecting screw comprises a clamping end and a threaded end, the threaded end is respectively in threaded connection with the connecting cap and the connecting rod, wherein,

a clamping groove is formed between the clamping end and the threaded end, and one end of the silica gel extrusion tube is clamped among the connecting cap, the clamping end and the clamping groove;

the end face of the threaded end is recessed inwards to form a containing groove, and the filling head is contained in the containing groove towards one end of the silica gel extrusion tube;

the screw channel penetrates from the end face of the clamping end to the bottom of the accommodating groove.

Further, the expansion subassembly includes the buckle, and the cover is established just end confined silica gel cover on the buckle, the end of silica gel cover is along dorsad the direction of silica gel extrusion pipe stretches out the connecting rod, the buckle will the head end of silica gel cover is fixed the inside of connecting rod, it dorsad to fill the head the one end of silica gel extrusion pipe passes the buckle will the end of silica gel cover extends, the inner chamber of silica gel cover with fill medium passageway UNICOM, when carrying out cervical dilatation, the pressure components to fill gas or liquid in the expansion sacculus, gas or liquid loops through the pipe and fills the medium passageway and get into in the inner chamber of silica gel cover, the silica gel cover is outwards expanded in order to realize the expansion to the cervix.

Further, a silica gel attaching part is formed at the head end of the silica gel sleeve, the tail end of the silica gel sleeve is arc-shaped, and the outer diameter of the silica gel sleeve is gradually reduced;

the thickness of the tube wall of the silica gel sleeve from the head end to the tail end is gradually reduced, and the difference of the whole thickness is 0.1 mm.

Further, the tail end of the filling head is sleeved with a silica gel cap, and the tail end of the silica gel cap props against the tail end of the silica gel sleeve.

Furthermore, the guide wire comprises a luer connector and a stainless steel hollow pipe which are connected, a guide hole is formed in the luer connector, and the guide hole is communicated with the stainless steel hollow pipe to form the guide channel.

Drawings

Fig. 1 is a schematic structural view of a disposable cervical dilatation balloon catheter in an embodiment of the present invention;

fig. 2 is an exploded view of the disposable cervical dilation balloon catheter of fig. 1;

FIG. 3 is a cross-sectional view of the silicone plug of FIG. 1 prior to penetration by a guidewire;

FIG. 4 is an assembled exploded cross-sectional view of the connection assembly of FIG. 1;

FIG. 5 is a cross-sectional view of the filling head of FIG. 1;

fig. 6 is a cross-sectional view of the silicone sleeve of fig. 1.

Description of the main element symbols:

dilatation saccule	100	Guide wire	10
				Luer connector	101	Stainless steel hollow pipe	102
Hose assembly	11	Silica gel adaptor	111
				First adapter	1111	Second adapter	1112
Silica gel plug	112	Plug head	1121
				Plug column	1122	Guide hole	1123
Reinforcing rib	1124	Silica gel extrusion pipe	113
				Connecting assembly	12	Connecting channel	121
Connecting cap	122	Cap channel	1221
				Connecting rod	123	Connecting screw	124
Screw channel	1241	Clamping end	1242
				Threaded end	1243	Clamping groove	1244
Accommodating groove	1245	Expansion assembly	13
				Buckle	131	Silica gel cover	132
Silica gel joint part	1321	Filling head	14
				Media filling channel	141	Silica gel cap	15

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. Several embodiments of the invention are given in the accompanying drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to fig. 1 and 2, in an embodiment of the present invention, a disposable cervical dilatation balloon catheter is provided, which includes a pressurizing assembly and an dilatation balloon 100 connected to each other, wherein the dilatation balloon 100 includes a guide wire 10 connected to the pressurizing assembly, a hose assembly 11 connected to the guide wire 10, a connecting assembly 12 connected to the hose assembly 11, an dilatation assembly 13 disposed in the connecting assembly 12, and a filling head 14 having one end disposed in the connecting assembly 12 and the other end passing through the dilatation assembly 13 and extending the length of the dilatation assembly 13, and one end of the filling head 14 facing the guide wire 10 is provided with a filling medium channel 141;

the tail end of the guide wire 10 penetrates through the hose assembly 11 and abuts against the connecting assembly 12, and a conduction channel is formed in the guide wire 10;

a connecting channel 121 is arranged in the connecting component 12, and the connecting channel 121 is communicated with the conducting channel and the medium filling channel 141.

It should be noted that, the utility model discloses in, when carrying out the cervical dilatation, through the guide effect of seal wire 10 will hose assembly 11 is followed coupling assembling 12, sufficient head 14 and expansion subassembly 13 get into the vagina in, pressure components to fill gas or liquid in the expansion sacculus 100, gas or liquid loops through conduction channel, connecting channel 121 and fill medium passageway 141 and get into in the expansion subassembly 13, expansion subassembly 13 is to the inflation outward in order to realize the expansion to the cervix to once only slowly enlarge the cervix to the size of ensureing to operate and go on smoothly, alleviate patient's pain, reduce the damage to the cervical mucosa, go on smoothly with the safety of ensureing to expand the palace process.

Referring to fig. 2, the hose assembly 11 includes a silicone adapter 111, a silicone plug 112 is embedded in one end of the silicone adapter 111, the other end of the silicone adapter is connected to a silicone extrusion tube 113, the other end of the silicone extrusion tube 113 is clamped to the connecting assembly 12, when the cervical dilatation is completed, the guide wire 10 is pulled out, the silicone plug 112 seals by itself under the elastic restoring force of the silicone adapter 111 and the silicone plug 112, and the dilatation balloon 100 is retained by folding the silicone extrusion tube 113.

It should be clear that, in this embodiment, since the silicone extrusion tube 113 is made of a silicone material, it has elasticity and can be folded. Further, the silicone adaptor 111 and the silicone extrusion tube 113 may be integrally formed, or may be connected by bonding.

Referring to fig. 3, the silicone plug 112 includes a plug head 1121 and a plug post 1122 embedded in the silicone adapter 111, a guide hole 1123 extending toward the plug post 1122 is formed on an end surface of the plug head 1121, and before use, the end of the guide wire 10 enters the guide hole 1123 and penetrates through the plug post 1122 to enter the silicone extrusion tube 113.

Specifically, in this embodiment, the guide hole 1123 serves as a guide for facilitating the insertion of the guide wire 10 or the liquid guide device, and then penetrates through the plug 1122 and out of the middle of the other end of the plug 1122.

The plunger 1122 is solid before being penetrated, and mainly serves as a seal, and in use, the guide wire 10 is inserted into the guide hole 1123 and penetrates the plunger 1122, and inflation or liquid pressurization is performed through the guide wire 10 to inflate the expansion assembly 13. When the cervical dilatation is finished, the guide wire 10 is pulled out, the plug 1122 is restored to the original shape under the elastic restoring force of the silica gel adaptor 111 and the silica gel plug 112, self-sealing is carried out, gas or liquid (physiological saline) is prevented from flowing out, after the clinical effect is achieved, a liquid guide device is inserted, pressure relief is carried out, and the gas or liquid in the expansion assembly 13 is discharged.

In the utility model discloses in another preferred embodiment, be equipped with a plurality of strengthening ribs 1124 on the outer wall of stopper 1122, strengthening rib 1124 makes it is inseparabler to connect between stopper 1122 and the silica gel adaptor 111, and the end is circular-arc, can increase area of contact between stopper 1122 and the silica gel adaptor 111 strengthens sealed effect bar.

Referring to fig. 2, the silicone adapter 111 includes a first adapter 1111 and a second adapter 1112 connected to each other, the first adapter 1111 has a first adapter hole, and the second adapter 1112 has a second adapter hole.

Specifically, the plug 1122 is clamped by the first transfer hole, and the first transfer hole and the plug 1122 are in interference fit, that is, the inner diameter of the first transfer hole is smaller than the outer diameter of the plug 1122, so that after the guide wire 10 is pulled out, the first transfer joint 1111 contracts and clamps the plug 1122, so that the plug 1122 is sealed by itself.

Further, the second adapter 1112 is connected to the silica gel extrusion pipe 113, and the second adapter hole is communicated with the silica gel extrusion pipe 113, so that the guide wire 10 enters the silica gel extrusion pipe 113.

Referring to fig. 2 and 4, the connecting assembly 12 includes a connecting cap 122, a connecting rod 123, and a connecting screw 124 connecting the connecting cap 1221 and the connecting rod 123, wherein the connecting screw 124 has a hollow structure, one end of the connecting screw clamps the silicone extrusion tube 113 in the connecting cap 122, and the other end of the connecting screw clamps the common end of the expansion assembly 13 and the filling head 14 in the connecting rod 123;

the connecting cap 122 is provided with a cap passage 1221 therein, the connecting screw 124 is provided with a screw passage 1241 therein, and the screw passage 1241 and the cap passage 1221 are communicated to form the connecting passage 121, so that gas or liquid can enter the medium filling passage 141.

Further, the connection screw 124 includes a clamping end 1242 and a threaded end 1243, and the threaded end 1243 is respectively in threaded connection with the connection cap 122 and the connection rod 123, so that the structure of the connection assembly 12 becomes simple and easy to assemble, wherein,

a clamping groove 1244 is formed between the clamping end 1242 and the threaded end 1243, and one end of the silica gel extrusion pipe 113 is clamped between the connecting cap 122, the clamping end 1242 and the clamping groove 1244, so that the silica gel extrusion pipe 113 and the connecting assembly 12 can be sealed;

the end face of the threaded end 1243 is recessed inwards to form a receiving groove 1245, and the end of the filling head 14 facing the silicone extrusion tube 113 is received in the receiving groove 1245, so that the sealing between the filling head 14 and the connecting assembly 12 can be realized;

the screw passage 1241 extends from the end surface of the clamping end 1242 to the bottom of the receiving groove 1245, so as to facilitate communication between the screw passage 1214 and the medium filling passage 141.

Referring to fig. 2 and 5, the inflation medium channel 141 serves to facilitate the passage of fluid or gas through the inflation head 14 and into the inflation assembly 13. When the cervix is dilated, the pressurizing assembly fills gas or liquid into the dilation balloon 100, the gas or liquid sequentially enters the dilation assembly 13 through the guide channel, the connecting channel 121 and the medium filling channel 141, and the dilation assembly 13 expands outwards to achieve dilation of the cervix.

Further, the length of the filling head 14 ranges from 20mm to 80mm, and in order to achieve the extension of the stent 13, the length of the filling head 14 is greater than the length of the stent 13.

Referring to fig. 2 and 6, the expansion assembly 13 includes a buckle 131, a silicone sleeve 132 sleeved on the buckle 131 and having a closed end, the end of the silicone sleeve 132 extends out of the connecting rod 123 along a direction back to the silicone extrusion tube 113, the buckle 131 fixes the head end of the silicone sleeve 132 inside the connecting rod 123, one end of the filling head 14 back to the silicone extrusion tube 113 passes through the buckle 131 and extends the end of the silicone sleeve 132, an inner cavity of the silicone sleeve 132 is communicated with the inflation medium channel 141, when the cervix is expanded, the pressurizing assembly fills gas or liquid into the expansion balloon 100, the gas or liquid sequentially passes through the conduction channel, the connecting channel 121 and the inflation medium channel 141 and enters the inner cavity of the silicone sleeve 132, and the silicone sleeve 132 expands outward to expand the cervix.

Referring to fig. 6, a silica gel attaching portion 1321 is formed at the head end of the silica gel sleeve 132, the tail end of the silica gel sleeve 132 is arc-shaped, and the outer diameter of the silica gel attaching portion 1321 is gradually reduced, so that the buckle 131 can fix the silica gel sleeve 132 conveniently, the sealing performance can be enhanced, the arc-shape can reduce damage to the cervix during an operation, the outer diameter is gradually reduced, so that the size of the silica gel sleeve 132 entering the cervix is gradually increased, and the cervix can adapt to the insertion of the silica gel sleeve 132 conveniently.

In another preferred embodiment of the present invention, the thickness of the tube wall of the silica gel sleeve 132 from the head end to the tail end is gradually reduced, and the whole thickness is different by 0.1mm, so that the thin tail end of the tube wall is firstly expanded when the cervix is expanded.

Specifically, in this embodiment, the length of the silicone sleeve 132 is 20mm to 70mm, and on one hand, in the assembly process, the length of the silicone sleeve 132 is extended by the filling head 14, that is, the length of the silicone sleeve 132 is stretched, so that the outer diameter of the silicone sleeve 132 can be reduced, that is, the size of the cervix which enters the cervix for the first time is reduced, and on the other hand, the balloon can be uniformly inflated in the expansion process by stretching the silicone sleeve 132.

Preferably, the length of the silicone sleeve 132 is smaller than the length of the filling head 14, in order to extend the length of the silicone sleeve 132 by the filling head 14. When the length of the silicone sleeve 132 is less than 20mm, the strength of the silicone sleeve 132 is increased after the silicone sleeve 132 is stretched by the filling head 14, and the use requirement cannot be met; when the length of the silicone sleeve 132 is greater than 70mm, the length of the silicone sleeve 132 is close to the length of the filling head 14, so that the stretching effect cannot be achieved, that is, the outer diameter of the silicone sleeve 132 is not changed basically, and in addition, the used materials of the silicone sleeve 132 are increased, and the cost is increased.

Referring to fig. 2, the silicone cap 15 is sleeved at the end of the filling head 14, and the end of the silicone cap 15 abuts against the end of the silicone sleeve 132, so that the structure of the end of the silicone sleeve 132 can be simplified, and the end of the filling head 14 can be prevented from directly contacting with the end of the silicone sleeve 132, so as to ensure the service life of the silicone sleeve 132.

Referring to fig. 2 again, the guide wire 10 includes a luer 101 and a stainless steel hollow tube 102 connected together, a guide hole is formed in the luer 101, and the guide hole and the stainless steel hollow tube 102 are communicated to form the conduit. When the disposable cervical dilatation balloon catheter is inserted into the vagina, the guide wire 10 plays a role of supporting and guiding, and when cervical dilatation is carried out, the conduction channel is communicated with the connecting channel 121 and the medium filling channel 141, so that gas or liquid can conveniently pass through.

It should be noted that, in this embodiment, the pressurizing assembly includes a hose, a joint and an inflator sequentially connected to the hose assembly 11, a check valve is disposed inside the joint, and a pressure gauge is connected to an outer wall of the joint. And filling gas or liquid into the expansion assembly through the filling device, and monitoring the filling amount of the gas or the liquid through the pressure gauge.

Specifically, in this embodiment, the filling device is an injector, the gas is air, and the liquid is distilled water, purified water, or physiological saline.

The utility model discloses in the use, will earlier inhale gas or liquid in the sufficient ware, then with articulate, sufficient ware loops through gas or liquid conduction channel in the seal wire 10 connecting channel 121 in the coupling assembling 12 with fill the medium passageway 141 that fills in the head 14, slowly pour into in the silica gel cover 132, silica gel cover 132 externally expands in order to realize the expansion to the cervix to once only slowly enlarge to the size of ensureing to operate and go on smoothly, pass through simultaneously the inside gas of manometer real-time supervision or the pressure condition of liquid avoids pressure too little, and the cervix expansion is not in place, or avoids pressure variation too big, makes silica gel cover 132's external diameter change is too big, leads to the damage to the cervical mucosa.

To sum up, in the disposable cervical dilatation balloon catheter of the present invention, when the cervical dilatation is performed, the hose assembly 11 is guided by the guide wire 10 to follow the connection assembly 12, the filling head 14 and the dilatation assembly 13 into the vagina, the pressurization assembly fills gas or liquid into the dilatation balloon 100, the gas or liquid sequentially passes through the conduction channel, the connection channel 121 and the medium filling channel 141 into the silica gel sleeve 132, the silica gel sleeve 132 is externally expanded to realize the dilatation of the cervix, so as to gradually expand the cervix to the size ensuring the smooth operation, reduce the pain of the patient, reduce the damage to the mucosa of the cervix, and ensure the safe and smooth operation of the uterine dilatation process; when the cervical dilatation is finished, the guide wire 10 is pulled out, the silica gel adaptor 111 and the silica gel plug 112 are elastically restored, the silica gel plug 112 is automatically sealed, and the expansion balloon 100 is kept in the vagina by folding the silica gel extrusion pipe 113.

The above-mentioned embodiments only express some embodiments of the present invention, and the description thereof is more specific and detailed, but not understood as the limitation of the patent scope of the present invention, and the various embodiments presented in the present application can be combined with each other. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. A disposable cervical dilatation balloon catheter comprises a pressurizing assembly and an dilatation balloon which are connected, and is characterized in that: the expansion balloon comprises a guide wire connected with the pressurizing assembly, a hose assembly connected with the guide wire, a connecting assembly connected with the hose assembly, an expansion assembly arranged in the connecting assembly, and an filling head, wherein one end of the filling head is arranged in the connecting assembly, the other end of the filling head penetrates through the expansion assembly and extends the length of the expansion assembly, and one end of the filling head, which faces towards the guide wire, is provided with a medium filling channel;

2. The disposable cervical dilatation balloon catheter according to claim 1, wherein the silica gel plug comprises a plug head and a plug column embedded in the silica gel adaptor, the plug head is provided with a guide hole extending towards the plug column on an end surface, and before use, the tail end of the guide wire enters the guide hole and penetrates through the plug column to enter the silica gel extrusion tube.

3. The disposable cervical dilation balloon catheter according to claim 2, wherein the plug is provided with a plurality of ribs on an outer wall thereof, and the end of the rib is arc-shaped.

4. The disposable cervical dilation balloon catheter according to claim 2, wherein the silicone adaptor comprises a first adaptor and a second adaptor connected to each other, the first adaptor having a first adaptor hole therein, the second adaptor having a second adaptor hole therein, wherein,

5. The disposable cervical dilation balloon catheter according to claim 2, wherein the connecting assembly comprises a connecting cap, a connecting rod, and a connecting screw connecting the connecting cap and the connecting rod, the connecting screw is hollow, one end of the connecting screw clamps the silica gel extrusion tube in the connecting cap, and the other end of the connecting screw clamps the common end of the dilation assembly and the filling head in the connecting rod;

6. The disposable cervical dilation balloon catheter of claim 5, wherein the connection screw includes a snap-in end and a threaded end, the threaded end being threadedly connected with the connection cap and the connection rod, respectively, wherein,

7. The disposable cervical dilatation balloon catheter according to claim 6, wherein the dilatation assembly comprises a buckle, a silicone sleeve which is sleeved on the buckle and has a closed end is arranged, the end of the silicone sleeve extends out of the connecting rod along a direction back to the silicone extrusion tube, the buckle fixes the head end of the silicone sleeve in the connecting rod, the filling head faces back to one end of the silicone extrusion tube and penetrates through the buckle and extends the end of the silicone sleeve, the inner cavity of the silicone sleeve is communicated with the filling medium channel, when cervical dilatation is performed, the pressurization assembly fills gas or liquid into the dilatation balloon, the gas or liquid enters the inner cavity of the silicone sleeve through the catheter and the filling medium channel, and the silicone sleeve expands outwards to realize cervical dilatation.

8. The disposable cervical dilatation balloon catheter according to claim 7, wherein the head end of the silica gel sleeve forms a silica gel attaching part, the tail end is arc-shaped, and the outer diameter is gradually reduced;

9. The disposable cervical dilation balloon catheter according to claim 7, wherein the end of the filling head is sleeved with a silicone cap, the end of the silicone cap abutting against the end of the silicone sleeve.

10. The disposable cervical dilation balloon catheter according to any one of claims 1 to 9, wherein the guide wire comprises a luer connector and a stainless steel hollow tube connected, a guide hole is formed in the luer connector, and the guide hole and the stainless steel hollow tube are communicated to form the guide channel.