CN111135432A

CN111135432A - Telescopic peristaltic multi-balloon colon retrograde gas-liquid dual-radiography catheter device

Info

Publication number: CN111135432A
Application number: CN202010057289.6A
Authority: CN
Inventors: 汪子文; 赵芳; 张军; 刘金朝; 任建庄; 陈鹏飞; 王倩
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-05-12

Abstract

The invention relates to the field of medical instruments, in particular to a telescopic peristaltic multi-balloon colon retrograde gas-liquid dual radiography conduit device; the invention comprises a first catheter, a second catheter, a third catheter and a guide wire sleeve, wherein the first catheter is provided with a limiting blocking disc, a first balloon and a first balloon one-way inflation joint; in the invention, a first balloon on a first catheter is propped up in the rectum and is pushed forward, then the first balloon, a filling balloon and a third balloon are propped up, contrast agent is injected by a contrast infusion joint and flows out of a contrast infusion hole; the design of the three layers of the conduits can ensure that the operation of each step is clearer and simplified, the operation is more stable, the operation is simple, and the effect is obvious.

Description

Telescopic peristaltic multi-balloon colon retrograde gas-liquid dual-radiography catheter device

Technical Field

The invention relates to the field of medical instruments, in particular to a telescopic peristaltic multi-balloon colon retrograde gas-liquid dual contrast catheter device.

Background

In various hospitals, when a patient is subjected to colon radiography examination, a contrast medium such as barium sulfate and the like is generally required to be injected into the colon of the patient from the anus of the patient through an enemator, so that the colon of the patient can be more clearly shown when the patient receives colon X-ray examination in the subsequent process, and a doctor can more clearly observe a diseased part of the colon of the patient; in the process, an inflation device is usually needed to inject air into the colon of the patient so as to expand the colon of the patient, so that tissues such as mucosa on the inner wall of the colon of the patient can be better filled with the barium sulfate injected in the early stage, and the contrast agents such as the barium sulfate injected in the colon can be uniformly distributed, so that the subsequent examination and development are facilitated.

The traditional way is that after contrast agents such as barium sulfate are infused into the colon of a patient from the anus of the patient through an enemator, an output pipe on the corresponding enemator and an anal pipe inserted into the anus are disconnected, and then an air outlet pipe of a corresponding air charging device is connected with the anal pipe at the anus end to inflate the colon of the patient, so that the method is universal, but still has certain defects and shortcomings:

1. when the output pipe of the corresponding enemator is disconnected, the possibility that contrast agents such as barium sulfate and the like even excrement overflows from the anal tube inserted into the anus of the patient and the corresponding anal tube falls off exists, so that the barium sulfate infusion effect is poor, the barium sulfate runs off, and clothes of the patient and a diagnostic bed are polluted.

2. At each stage of contrast medium infusion, the patient needs to adopt different prone positions and different manipulations of medical staff to promote the contrast medium to quickly pass through different positions of the colon, for example, the left side of the knee is bent when the anal canal is inserted into the anus for 10 cm; the contrast agent is infused in a supine position, and when the contrast agent enters the descending colon through the sigmoid colon and reaches the splenic flexure, the left side of the patient is lifted; the contrast agent reaches the ascending colon and is interrupted, the infusion is stopped, and the caecum is filled by posture and manipulation. The patient needs to adopt different postures in the whole process, and the patient in the enema stage is not a little burden, so that the patient suffering greatly increases, the local condition of acid anesthesia of the patient is easily caused, and meanwhile, the abdomen of the patient is massaged by different methods to a doctor so as to promote the contrast agent to flow quickly, and the condition that medical staff is exhausted is easily caused.

3. During traditional radiography, a catheter infuses a contrast agent in the colon, the contrast agent is wriggled to the whole colon area only by means of the wriggling of the colon, a large amount of time is needed, the inner walls of all areas in the colon can not be guaranteed to be impregnated with the contrast agent, the contrast agent can not be guaranteed to be uniformly distributed, and an actual case proves that the contrast agent is closer to the infusion area of the contrast agent in the traditional radiography, the contrast agent is more distributed, the distribution is more sparse when the contrast agent is far away, clear development can not be guaranteed, and the condition diagnosis of a patient is easy to cause errors.

Disclosure of Invention

In order to solve the above problems, an object of the present invention is to provide a telescopic peristaltic multi-balloon colon retrograde gas-liquid dual contrast catheter device, which is supported in the rectum by a first balloon on a first catheter, is pushed forward, is supported by a second balloon, a filling balloon and a third balloon, is injected with a contrast agent by a contrast infusion joint, and flows out from a contrast infusion hole.

The purpose of the invention is realized by the following technical scheme:

the invention provides a telescopic peristaltic multi-balloon colon retrograde gas-liquid dual contrast catheter device which comprises a first catheter, a second catheter sleeved in the first catheter, a third catheter sleeved in the second catheter and a guide wire sleeve sleeved in the third catheter, wherein a limiting blocking disc, a first balloon and a first balloon one-way inflation connector are arranged on the first catheter, the first balloon is positioned on the front side of the limiting blocking disc, the first balloon one-way inflation connector is communicated with the first balloon, and the first balloon one-way inflation connector is positioned on the rear side of the limiting blocking disc; the second catheter is provided with a second balloon, an imaging infusion hole, an imaging infusion joint, a second balloon one-way inflation joint and a filling balloon one-way inflation joint, the front end of the second catheter is communicated with one side of the filling balloon, the other side of the filling balloon is arranged on the third catheter, the second balloon one-way inflation joint is communicated with the second balloon, the imaging infusion joint is communicated with the imaging infusion hole, and the filling balloon one-way inflation joint is communicated with the filling balloon; the third catheter is provided with a third balloon and a third balloon one-way inflation joint which are communicated, the third balloon is positioned at the front end of the filling balloon, the third balloon one-way inflation joint is positioned at the rear side of the second balloon one-way inflation joint, a guide wire is arranged in the guide wire sleeve, and the front end of the third catheter is provided with a marking ring.

As an improvement of the invention, the front end of the first catheter is provided with a spiral drainage groove, the spiral drainage groove smoothly extends into the wall of the first catheter after the number of spiral turns exceeds one turn to form a drainage channel, the drainage channel is communicated with a drainage hole arranged in the first catheter, the drainage hole is communicated with a drainage tube, and the drainage tube is communicated with a negative pressure drainage bag.

As a further improvement of the invention, the rear end of the first conduit is provided with a push-pull baffle ring.

As a further improvement of the invention, the rear end of the second conduit is provided with an internal thread end, and a plurality of multi-thread internal thread grooves are uniformly distributed on the circumference of the inner wall of the internal thread end.

As a further improvement of the invention, the second catheter is provided with a push-pull ring which is arranged at the front side of the internal thread end.

As a further improvement of the present invention, the third conduit is provided with an eccentrically clamped multi-spiral end, the eccentrically clamped multi-spiral end comprises two eccentric fixing rings and a connecting pipe, two ends of the connecting pipe are respectively communicated with the two eccentric fixing rings, a plurality of eccentric clamping wheel grooves are arranged in the eccentric fixing rings, and eccentric clamping wheels are arranged in the eccentric clamping wheel grooves.

As a further improvement of the invention, the eccentric clamping wheel on the front side is connected with a multi-start threaded pipe which is threadably connected with the multi-start internal thread groove.

As a further improvement of the invention, the rear end of the third conduit is connected with a triangular conduit joint, and the guide wire sleeve passes through the triangular conduit joint.

As a further improvement of the invention, a pressure maintaining valve is arranged in the triangular catheter joint.

As a further improvement of the invention, the rear end of the guide wire sleeve is provided with a push-pull end head.

In the invention, a first balloon on a first catheter is propped up in the rectum and is pushed forward, then the first balloon, a filling balloon and a third balloon are propped up, contrast agent is injected by a contrast infusion joint and flows out of a contrast infusion hole; the design of the three layers of the conduits can ensure that the operation of each step is clearer and simplified, the operation is more stable, the operation is simple, and the effect is obvious.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the invention and together with the description serve to explain the invention without limiting the invention. In the drawings:

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the connection of a first conduit according to the present invention;

FIG. 3 is a schematic view of the spiral drainage groove arrangement of the present invention;

FIG. 4 is a schematic view of the connection of a second conduit of the present invention;

FIG. 5 is a cross-sectional view of the internally threaded end of the present invention;

FIG. 6 is a schematic view of the arrangement of the female threaded end of the present invention;

FIG. 7 is a schematic view of the connection of a third conduit of the present invention;

FIG. 8 is a schematic view of the connection of the eccentrically clamped multi-spiral end of the present invention to an internally threaded end;

FIG. 9 is a schematic diagram of the construction of the eccentrically clamped multi-spiral tip of the present invention;

FIG. 10 is a first cross-sectional view of the eccentrically clamped multi-spiral tip of the present invention;

FIG. 11 is a second cross-sectional view of the eccentrically clamped multi-spiral tip of the present invention;

FIG. 12 is a cross-sectional view of the connection of the eccentrically clamped multi-spiral end of the present invention with an internally threaded end;

FIG. 13 is a schematic structural view of a guide wire cover of the present invention;

FIG. 14 is a schematic view of the procedure of the present invention, step 1, from the anus into the rectum;

FIG. 15 is a schematic view of the expansion of the first balloon at the inner wall of the rectal region during step 2 of the method of operation of the present invention;

FIG. 16 is a first schematic view illustrating the forward advancement of the second catheter 2 from the rectal section in step 3 of the procedure of the present invention;

FIG. 17 is a second schematic view of the advancement of the second catheter 2 from the rectal section in step 3 of the procedure of the present invention;

FIG. 18 is a schematic view of the inflated, secured second balloon after a second catheter has been advanced a distance at step 4 of the method;

FIG. 19 is a schematic view of the inflation balloon and the third balloon inflated and secured in step 5 of the method operation of the present invention;

FIG. 20 is a schematic representation of the second balloon and filling balloon being pushed forward after deflation at step 6 of the operating step of the present invention;

FIG. 21 is a schematic representation of the inflation, securement of the second balloon and deflation of the third balloon in step 7 of the method steps of the present invention;

FIG. 22 is a schematic view of the third catheter advanced and the third balloon secured to the filling balloon by inflation at step 8 of the method steps of the present invention;

wherein the reference numerals are: 1-a first catheter, 11-a limit baffle disc, 12-a first balloon, 13-a first balloon one-way inflation joint, 14-a spiral drainage groove, 15-a push-pull baffle ring, 16-a drainage channel, 17-a drainage hole, 18-a drainage tube, 19-a negative pressure drainage bag, 2-a second catheter, 21-a second balloon, 22-a contrast infusion hole, 23-a contrast infusion joint, 24-a second balloon one-way inflation joint, 25-a filling balloon one-way inflation joint, 26-a filling balloon, 27-an internal thread end, 28-a multi-thread internal thread groove, 29-a push-pull ring, 3-a third catheter, 31-a third balloon, 32-a third balloon one-way inflation joint, 33-a marking ring and 34-an eccentric clamping multi-spiral end, 341-eccentric fixed ring, 342-connecting pipe, 343-eccentric clamping wheel groove, 344-eccentric clamping wheel, 345-multi-thread threaded pipe, 346-sleeve, 35-triangular catheter joint, 36-pressure maintaining valve, 37-wire drawing push-pull end head, 38-wire drawing, 4-wire guide sleeve, 41-wire guide and 42-push-pull end head.

Detailed Description

In order to make the technical solutions of the present invention better understood, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 to 22, the telescopic peristaltic multi-balloon colon retrograde gas-liquid dual contrast catheter device of the present invention comprises a first catheter 1, a second catheter 2 sleeved in the first catheter 1, a third catheter 3 sleeved in the second catheter 2, and a guide wire sleeve 4 sleeved in the third catheter 3; the invention is mainly used for plugging the catheter part at the front end of the invention into the anus of a patient so as to detect and diagnose the tumor in the intestinal tract of the patient in an intestinal tract radiography mode.

As shown in fig. 2, a limiting baffle disc 11, a first balloon 12 and a first balloon one-way inflation connector 13 are arranged on the first catheter 1, the first balloon 12 is arranged at the front side of the limiting baffle disc 11, the first balloon one-way inflation connector 13 is communicated with the first balloon 12, and the first balloon one-way inflation connector 13 is arranged at the rear side of the limiting baffle disc 11; the front end of the first catheter 1 is provided with a spiral drainage groove 16, the spiral drainage groove 16 smoothly extends into the wall of the first catheter 1 after the number of spiral turns exceeds one turn to form a drainage channel 16, the drainage channel 16 is communicated with a drainage hole 17 arranged in the first catheter 1, the drainage hole 17 is communicated with a drainage tube 18, and the drainage tube 18 is communicated with a negative pressure drainage bag 19; the rear end of the first guide tube 1 is provided with a push-pull retainer ring 15.

Specifically, a push-pull baffle ring 15 is fixed at the rear end of the first catheter 1, the front end face and the rear end face of the push-pull baffle ring 15 are both provided with baffle discs with raised circumferences, so that the push-pull is convenient to be controlled by fingers of medical staff to push and pull, a limit baffle disc 11 is coaxially fixed on the periphery of the catheter wall at a certain distance forward along the axial direction of the push-pull baffle ring 15, the circumference disc face of the limit baffle disc 11 is larger, the front end face of the limit baffle disc 11 is provided with a certain backward taper, the limit baffle disc 11 is used for plugging a device into the anus and then limiting the limit baffle disc 11 outside the anus of the patient to prevent the first catheter 1 from entering too much, a first balloon 12 is arranged on the first catheter 1 at the position close to the front of the limit baffle, the catheter is used for expanding the anus and the internal intestinal wall thereof, is convenient for the first catheter 1 to play a role of a relatively fixed channel for providing enough space for the subsequent catheter to enter, and simultaneously prevents contrast fluid and dirty fluid from flowing out of the anus; a first balloon one-way inflation connector 13 is communicated with the tube wall of the first catheter 1 region between the push-pull baffle ring 15 and the limiting baffle disc 15, an external injector of the first balloon one-way inflation connector 13 can be used for inflating the first balloon 12, the front end region of the first catheter 1 is arranged in a conical shape, a spiral drainage groove 14 in a spiral shape is arranged on the conical surface of the front end of the first catheter 1, the spiral drainage groove 14 smoothly extends to the tube wall of the first catheter 1 after the spiral turns exceed one turn to form a drainage channel 16, the tube wall of the drainage channel 16 axially extends to the region between the push-pull baffle ring 15 and the limiting baffle disc 11 of the first catheter 1 is provided with a drainage hole 17, a drainage tube 18 is connected outside the drainage hole 17, the other end of the drainage tube 18 is connected with a negative pressure drainage bag 19, the negative pressure drainage bag 19 can suck the contrast agent and the dirty liquid in the intestinal tract into the negative pressure drainage bag 19 through the drainage tube 18 and the drainage channel 16 according to the negative, the spiral drainage groove 14 at the front end of the first catheter 1 can ensure that liquid in 360 degrees of the periphery of the first catheter 1 is drained into the spiral drainage groove 14, and the situation that residual contrast medium at dead angle positions in the intestinal tract of a specified area is not drained and sucked is avoided.

In the invention, a second balloon 21, an angiography infusion hole 22, an angiography infusion joint 23, a second balloon one-way inflation joint 24 and a filling balloon one-way inflation joint 25 are arranged on a second catheter 2, the front end of the second catheter 2 is communicated with one side of the filling balloon 26, the other side of the filling balloon 26 is arranged on a third catheter 3, the second balloon one-way inflation joint 24 is communicated with the second balloon 21, the angiography infusion joint 23 is communicated with the angiography infusion hole 22, and the filling balloon one-way inflation joint 25 is communicated with the filling balloon 26; the rear end of the second conduit 2 is provided with an internal thread end 27, and a plurality of multi-thread internal thread grooves 28 are uniformly distributed on the circumference of the inner wall of the internal thread end 27; the second conduit 2 is provided with a push-pull ring 29, the push-pull ring 29 being located on the front side of the internally threaded tip 27.

Specifically, as shown in fig. 2, the first catheter 1 is sleeved with the second catheter 2, and the second catheter 2 can be axially conveyed and pulled back relative to the first catheter 1, the second catheter 2 is far longer than the first catheter 1, so that the second catheter 2 has a sufficient length to be conveyed to the most distal position of the colon of the patient, the region of the conveying section of the second catheter 2 has flexible deformation characteristics and can be flexibly bent at will, the second catheter 2 is movably sleeved with the third catheter 3, the conveying length of the third catheter 3 is longer than that of the second catheter 2, the region of the front end of the second catheter 2 and the front section of the third catheter 3 are provided with filling balloons 26, the filling balloons 26 are in a sausage shape with an axial length larger than the diameter and a longer length after being inflated, the rear ends of the axial front and rear ends of the filling balloons 26 are fixedly sleeved on the tube wall of the second catheter 2, the front end is sleeved on the tube wall of the third catheter 3, so that the relative displacement difference of the second catheter 2 and the third catheter 3 in the delivery process does not exceed the axial length of the filling balloon; the filling balloon 26 is a non-compliant balloon, and the outer diameter of the filling balloon 26 at the circumference of the filled balloon is smaller than the inner diameter of the inner wall of the intestinal tract of the patient, so that the filling balloon 26 has a certain distance with the inner wall of the intestinal tract after being filled. The stroke difference of delivery of the second catheter 2 and the third catheter 3 can be adjusted when the filling balloon 26 is not inflated, and the filling balloon 26 can be contracted to the gap between the second catheter 2 and the third catheter 3; the catheter 2 at the rear side of the filling balloon 26 is sleeved with a second balloon 21, the second balloon 21 is a compliance balloon, the second balloon 21 can be expanded and fixed in the intestinal tract after being inflated, and the second balloon also has the functions of relatively fixing the second catheter 2 and preventing leakage in the intestinal tract. A contrast infusion hole 22 is formed on the wall of the second catheter 2 between the second balloon 21 and the filling balloon 26, and the contrast infusion hole 22 is used for infusing a contrast agent into the intestinal tract, so that the condition in the intestinal tract can be visualized on a visualizer.

As shown in fig. 3, an internal thread end 27 is coaxially fixed at the rear end of the second conduit 2, multiple thread inner thread grooves 28 are uniformly distributed on the circumference of the inner wall of the internal thread end 27, a pressure maintaining valve 36 (preferably 4 valves are adopted, the pressure maintaining valve 36 blocks the air flow at both sides of the valve to prevent the air flow from flowing, and the pressure maintaining valve 36 can maintain the pressure at both sides of the valve after the middle sleeve is sleeved on the inner wall of the internal thread end 27 in front of the multiple thread inner thread grooves 28, so as to prevent the contrast agent and the waste liquid from flowing out through the conduit), and the pressure maintaining valve 36 simultaneously has a damping effect on the sliding second conduit 2, so that the second conduit 2 can immediately stop sliding after stopping pushing, and has a certain self-locking effect; the outer wall of the internal thread end 27 is provided with two circular ring steps at a certain interval, so that the finger can be clamped and fixed conveniently. The second balloon one-way inflation connector 24, the filling balloon one-way inflation connector 25 and the radiography one-way infusion connector 23 are connected to the tube wall of the second catheter 2 at a certain distance from the front side of the internal thread end 27 respectively, the second balloon one-way inflation connector 24 and the filling balloon one-way inflation connector 25 are used for filling the second balloon 21 and the filling balloon 26 respectively, and the radiography one-way infusion connector 23 injects a contrast agent through an injector.

In the invention, a third balloon 31 and a third balloon one-way inflation joint 32 which are communicated with each other are arranged on a third catheter 3, the third balloon 31 is arranged at the front end of a filling balloon 26, the third balloon one-way inflation joint 32 is arranged at the rear side of a second balloon one-way inflation joint 24, an eccentrically clamped multi-spiral tip 34 is arranged on the third catheter 3, the eccentrically clamped multi-spiral tip 34 comprises two eccentric fixing rings 341 and a connecting pipe 342, two ends of the connecting pipe 342 are respectively communicated with the two eccentric fixing rings 341, a plurality of eccentric clamping wheel grooves 343 are arranged in the eccentric fixing rings 341, eccentric clamping wheels 344 are arranged in the eccentric clamping wheel grooves 343, the eccentric clamping wheels 344 at the front side are connected with a multi-thread pipe 345, and the multi-thread pipe 345 and the multi-thread inner thread grooves 28 can be in threaded connection.

Specifically, as shown in fig. 4, the front end of the third catheter 3 is designed into a conical structure, and the conical front end is sleeved with a marking ring 33, and the marking ring 33 is used for facilitating the position of the third catheter 3 in the intestinal tract to be determined by an attending physician during the operation; the region of the same conveying section of the third conduit 3 can be flexibly bent at will due to the flexible deformation characteristic, the front end of the second conduit 2 is slightly arc-shaped, the tube wall of the front end is slightly flexible, the degree of arc bending can be slightly changed under the action of the external force of the intestinal wall when the front end of the third conduit 3 travels inside the intestinal tract, but the front end of the third conduit can always keep in the arc-shaped bending state, the front end of the third conduit 3 can accurately align the direction and can smoothly advance when the intestinal wall which turns around in the bending mode inside the intestinal tract occurs in the traveling process of the intestinal tract due to the arc-shaped bending design matched with the rotation of the third conduit 3, and the situation that the conduit cannot turn can not occur. One end of a wire drawing 38 is fixed on a side face of the pipe wall at the front end position of the third guide pipe 3 facing the bending direction (namely, the end position of the circular arc bending section of the third guide pipe 3 faces the side face of the circular arc bending guide), the wire drawing 38 extends from the outside of the circular arc bending section of the third guide pipe 3 to the initial position of the circular arc bending section and enters from a wire drawing 38 channel at the initial position of the circular arc bending section of the third guide pipe 3 to the wire drawing push-pull end 37 extending to the rear end region of the third guide pipe 3, the wire drawing push-pull end 37 is in an annular I shape so as to be convenient for finger clamping, the wire drawing push-pull end 37 is sleeved on the rear end region of the third guide pipe 3 to be capable of carrying out small-range push-pull, and when the wire drawing push-pull end 37 is pulled backwards, the wire drawing. The fixed third sacculus 31 that is provided with on the initial pipe wall of third pipe 3 arcuation, third sacculus 31 are compliance sacculus, and third sacculus 31 is used for aerifing the third sacculus 31 after the pipe is at the inside appointed position of marcing of intestinal, and it is fixed to expand tightly to the intestinal inner wall after third sacculus 31 is sufficient to make things convenient for the subsequent normal operating of pipe.

The eccentric clamping multi-spiral end 34 is sleeved on the tube wall of the third conduit 3, a distance of the eccentric clamping multi-spiral end 34 is a distance ahead of the wire drawing push-pull end 37, a certain distance is formed between two eccentric wheel fixing rings 341 on the eccentric clamping multi-spiral end 34, a plurality of eccentric clamping wheel grooves 343 (preferably 8 eccentric clamping wheel grooves) are uniformly distributed on the inner circumference of the eccentric wheel fixing rings 341, an eccentric clamping wheel 344 is eccentrically sleeved inside each eccentric clamping wheel groove 343 of the eccentric wheel fixing rings 341 through a rotating shaft, the eccentric amount of the rotating shaft of each eccentric clamping wheel 344 corresponds to the eccentric position on the eccentric wheel one by one, when the eccentric wheel fixing rings 341 slide forwards on the outer wall of the third conduit 3, the eccentric clamping wheels 344 inside the eccentric wheel fixing rings 341 rotate eccentrically towards the third conduit 3 uniformly, so that all the eccentric clamping wheels 344 on the inner circumference of the eccentric wheel fixing rings 341 clamp the tube wall of the third, however, when the eccentric wheel fixing ring 344 slides backwards on the outer wall of the conduit 3, the eccentric clamping wheel 344 eccentrically rotates in a direction of separating from the third conduit 3, and the eccentric clamping wheel 344 does not clamp the conduit wall of the third conduit 3; the circumferential wheel surface of the eccentric clamping wheel 344 is designed to be a concave arc surface matched with the pipe wall of the third catheter 3, so that the contact area between the eccentric clamping wheel 344 and the outer pipe wall of the third catheter 3 can be increased as much as possible; the distribution and the eccentric positions of the eccentric clamping wheels 344 in the two eccentric wheel fixing rings 341 are in one-to-one correspondence, so that the eccentric clamping wheels 344 of the two eccentric wheel fixing rings 341 can be clamped simultaneously in the sliding process, the two eccentric wheel fixing rings 341 are fixedly connected with each other through a connecting pipe 342 with the outer diameter smaller than that of the eccentric wheel fixing ring, a sleeve 346 capable of flexibly rotating is sleeved on the outer periphery of the connecting pipe 342, the two eccentric wheel fixing rings 341 are adopted to prevent the eccentric wheel fixing ring 341 and the second conduit 2 from being inclined relatively under the eccentric clamping condition under the condition of only one eccentric wheel fixing ring 341, and the two eccentric wheel fixing rings do not have the condition; as shown in fig. 8 to 11, the front end surface of the eccentric wheel fixing ring 341 located at the front is coaxially and fixedly connected with a multi-thread pipe 345, the multi-thread of the outer wall of the multi-thread pipe 345 is just matched with the multi-thread inner thread groove 28 of the inner thread end 27 of the second catheter 2, so that the multi-thread pipe 345 can be screwed into the inner thread end 27, the front end of the multi-thread pipe 345 is designed to be conical, the fixed position of the rear end of the multi-thread pipe 345 and the eccentric wheel fixing ring 341 is also designed to be conical, and the third catheter 3 can be rotated when advancing by adopting the way of screwing the multi-thread pipe 345 and the inner thread end 27, so that the third catheter 3 can conveniently advance in the intestinal tract by the cooperation of slight arc bending and rotation after; the outer diameter of the eccentric wheel fixing ring 341 of the front group is larger than that of the eccentric wheel fixing ring of the rear group because the eccentric wheel fixing ring 341 of the front group can block and limit the internal thread end 27 when the multi-thread pipe 345 is screwed into the internal thread end 27.

In the invention, the rear end of the third catheter 3 is connected with a triangular catheter joint 35, the guide wire sleeve 4 passes through the triangular catheter joint 35, and a pressure maintaining valve 36 is arranged in the triangular catheter joint 35; specifically, the rear end of the third conduit 3 is fixedly connected with a triangular conduit joint 35, a main joint of the triangular conduit joint 35 is used for the guide wire sleeve 4 to pass through, and a pressure maintaining valve 36 is fixedly arranged in the main joint, so that the contrast medium and the dirty liquid are prevented from flowing out of the main joint, and the third conduit 3 is axially limited in a backward direction in a one-way manner; the secondary connector of the triangular catheter connector 35 is used for infusing contrast medium, the contrast medium is infused into the colon from the front end of the third catheter 3, and the contrast medium is infused through the third catheter 3 at the front end mainly when the contrast infusion hole of the second catheter 2 at the tail area of the colon is inconvenient to infuse.

In the invention, a guide wire 41 is arranged in a guide wire sleeve 4, the front end of a third catheter 3 is provided with a marking ring 33, and the rear end of the guide wire sleeve 4 is provided with a push-pull end 42; a wire drawing push-pull end 37 is arranged on the side face of the front end of the third guide pipe 3, and a wire drawing 38 is connected with the wire drawing push-pull end 37.

Specifically, as shown in fig. 7, the guide wire sleeve 4 is sleeved inside the catheter 3, the guide wire sleeve 4 is longer than the third catheter 3, the front end of the guide wire sleeve 4 is also designed to be curved in a circular arc shape along the front end of the second catheter 2, the front end of the guide wire sleeve 4 is designed to be in a tapered structure, a marking ring 33 is arranged at every certain area on the tube wall of the front end of the guide wire sleeve 4, a plurality of marking rings 33 uniformly distributed at the front end of the guide wire sleeve 4 play a role of a graduated scale, when the third catheter 3 reaches a specified position in the intestinal tract and is fully fixed by the third balloon 3, the guide wire sleeve 4 sleeved with the guide wire 41 is introduced into the third catheter 3 and extends out from the front end of the third catheter 3, the marking ring 33 at the forefront end of the guide wire sleeve 4 extending out from the front end of the third catheter 3 and the marking ring 33 at the front end of the third catheter 3 form a starting position and an ending position, and the marking rings uniformly distributed after the marking ring 33 at the forefront end of the guide wire sleeve 4 between the For the scale of length measurement, the size of the tumor lesion area can be detected by a contrast display mode, as shown in fig. 13, the rear end of the guide wire sleeve 4 is communicated with a push-pull end 42, the push-pull end 42 is in a circular i-shape, so that fingers can clamp the push-pull end 42 to push the guide wire sleeve 4 to move, a guide wire 41 is sleeved inside the guide wire sleeve 4, and the guide wire 41 is led in from the push-pull end 42 and extends out from the front end of the guide wire sleeve 4 when in use.

When the invention is applied to the process of pushing the inside of the colon of a patient and the guide tube is required to be steered and pushed at a bending section in the colon, an attending doctor clamps the sleeve of the eccentrically clamped multi-spiral end head 34 on the third guide tube 3 by fingers of one hand, fixes the internally threaded end head 27 of the second guide tube 2 to be kept still by the other hand, slides the eccentrically clamped multi-spiral end head 34 forwards along the axial direction of the third guide tube 3, clamps the third guide tube 3 by eccentrically rotating the eccentrically clamped wheel 344 in the eccentrically clamped multi-spiral end head 34 towards the third guide tube 3, drives the first guide tube 3 to synchronously move forwards by the eccentrically clamped multi-spiral end head 34, and when the forward movement is carried out to the internally threaded end head 27 by the eccentrically clamped multi-spiral end head 34 by the fingers, drives the third guide tube 3 to continuously move forwards, and enables the eccentrically clamped multi-spiral end head 34 to rotate while moving forwards under the matching of the threads of the multi-thread tube 345 and the internally threaded end After the multi-thread pipe 345 is completely screwed into the internal thread end 27, the finger pulls the eccentrically clamped multi-thread end 34 backwards through the sleeve 346, in the process of pulling backwards, the eccentric clamping wheel 344 inside the eccentrically clamped multi-thread end 34 reversely and eccentrically rotates to be separated from the outer wall of the third conduit 3, the third conduit 3 does not move backwards along with the eccentrically clamped multi-thread end 34, when the eccentrically clamped multi-thread end 34 is pulled backwards and rotationally separated from the internal thread end 27, the eccentrically clamped multi-thread end 34 is continuously pushed forwards, at this time, the eccentric clamping wheel 344 continuously eccentrically rotates towards the third conduit 3 to clamp the third conduit 3, the eccentrically clamped multi-thread end 34 drives the conduit 2 to synchronously move forwards, and the eccentrically clamped multi-thread end 34 continuously rotates while moving forwards under the matching of the thread pipe 345 and the internal thread end 27, the third guide pipe 3 is continuously driven to rotate and move forwards, and then the eccentric clamping multi-spiral end head 34 is continuously circularly clamped, so that the third catheter 3 always carries out the unidirectional rotation movement of forward movement, the extension part at the front end of the third catheter 3 is convenient to smoothly push forward in the intestinal tract under the movement of forward movement while rotating, since the third guide duct 3 has flexibility and the front end portion of the third guide duct 3 has a slightly curved shape, under the guidance of the arc bending structure and the motion of unidirectional rotation all the time, the direction can be accurately aligned and smoothly advanced when the intestinal wall which is bent and turned appears in the intestinal canal, because the intestinal canal trends with different bending degrees possibly exist in the intestinal canal, therefore, the pull wire pushing tip 37 is used to push or pull the pull wire 38 to control the bending degree of the arc-shaped bent section at the front end of the third conduit 3, so as to facilitate the passage of intestinal tracts with different bends.

In the invention, when the marking ring 33 at the front end of the third catheter 3 and the marking ring at the front end of the guide wire sleeve 4 are positioned at two ends of a lesion tumor, the marking ring at the foremost end of the guide wire sleeve 4 extending out of the front end of the third catheter 3 and the marking ring 33 at the front end tip of the third catheter 3 form a starting position and an ending position, the uniformly distributed marking rings behind the marking ring at the foremost end of the guide wire sleeve between the starting position and the ending position are used as scales for length measurement, the size of the lesion area of the tumor can be detected in a contrast visualization mode, and a subsequent treatment mode is determined.

As shown in fig. 14 to 22, the specific operation steps of the present invention are implemented:

step 1, as shown in fig. 14, when the catheter needs to be used, the first catheter 1 in the uninflated state of the first balloon 12 is slowly plugged into the anus of the patient, and after the front end of the first catheter 1 is completely inserted into the anus of the patient, the limiting blocking disc 11 blocks the outside of the anus to prevent the catheter in the excessive area from being inserted.

Step 2, as shown in fig. 15, gas is injected into the first balloon one-way inflation joint 13 by using an injector, the gas is introduced into the first balloon 12 to enable the balloon 12 to be inflated and fixed to clamp the intestinal wall inside the anus, at the moment, the first catheter 1 is fixed relative to the anus, the channel introduced into the anus is expanded, meanwhile, the anus is sealed and blocked, and the dirty liquid inside the rectum is prevented from overflowing from the anus. The residual foul solution can be drained to the negative pressure drainage bag 19 through the spiral drainage groove 14 and the drainage channel 16, so that the cleanness of the inside of the intestinal tract is ensured.

Step 3, as shown in fig. 16 and 17, the second conduit 2 and the related conduits are introduced into the first conduit 1, the second catheter 2, the third catheter 3 and the guide wire sleeve 4 extend out from the front end of the first catheter 1 under the traction of the guide wire 41, the second balloon 21, the filling balloon 26 and the third balloon 31 are all in an uninflated state, the guide wire sleeve 4 and the third catheter 3 sequentially extend out from the outer layer catheter, contrast agent is injected into the interior through a contrast infusion joint 23, the contrast agent is output from a contrast infusion hole 22 at the front section of the second catheter 2, the visualization operation is carried out on the anus rectum section visualization area A at the front side of the first balloon 12, and after the visualization of the visualization area A is completed, in the later step, when the second catheter 2 and the third catheter 3 are delivered to the whole part of the long distance in front of the contrast area A, the second balloon 21 and the third balloon 31 are alternately inflated during the propelling so as to enable the second catheter 2 and the third catheter 3 to be in the creeping propulsion.

Step 4, as shown in fig. 18, after a sufficient amount of contrast agent is infused into the contrast area a, the second balloon 21 is inflated through the second balloon one-way inflation joint 24, after the second balloon 21 is inflated and fixed to the inner wall of the intestinal tract, the second catheter 2 is fixed relative to the intestinal tract in the axial direction, and the intestinal tract is sealed and blocked, at this time, the guide wire sheath 4 and the third catheter 3 are conveyed forwards in the traction direction of the guide wire 41 until the filling balloon 26 is completely released from the gap between the second catheter 2 and the third catheter 3.

Step 5, as shown in fig. 19, injecting gas into the filling balloon 26 and the third balloon 31 through the filling balloon one-way inflation connector 25 and the third balloon one-way inflation connector 32, respectively, inflating and fixing the third balloon 31 to the inner wall of the intestinal tract after filling, so that the third catheter 3 is fixed relative to the intestinal tract in the axial direction and sealed and blocked, and after filling, the filling balloon 26 makes the empty space in the intestinal tract between the second balloon 21 and the third balloon 31 be a circular-ring-shaped cavity with two closed ends, which is named as an angiography region B; after injecting the contrast medium through radiography infusion hole 22, the contrast medium evenly distributed in contrast region B, because fill sacculus 26 outwards fills in intestinal central axis department, make the contrast medium change and contact the intestinal inner wall and develop the intestinal wall, the space volume reduces simultaneously can let the contrast medium more easily contact inside the 360 degrees circumference of intestinal, can the dip-dye more evenly, avoided traditional radiography formula need inject into a large amount of contrast medium and can completely fill 360 degrees circumference inner walls of intestinal.

Step 6, as shown in fig. 20, after the radiography in the radiography area B is completed, the second balloon 21 and the filling balloon 26 are respectively exhausted through the second balloon one-way inflation connector 24 and the filling balloon one-way inflation connector 25, the third balloon 31 is kept in an inflated state, the second catheter 2 is pushed forward along the axial direction after the gas in the second balloon 21 and the filling balloon 26 is exhausted, the stroke difference between the second catheter 2 and the third catheter 3 is shortened, and when the front end of the second catheter 2 is tightly attached to the third balloon 31, the forward pushing of the second catheter 2 is stopped.

Step 7, as shown in fig. 21, inflating the second balloon 21 to inflate the second balloon to a state of being inflated and fixed on the inner wall of the intestinal tract, so that the second catheter 2 is axially fixed relative to the intestinal tract, performing an air exhaust operation on the third balloon 31, pushing the third catheter 3 and the guide wire sleeve 4 to move forward along the intestinal tract after the air exhaust is completed, increasing the stroke difference between the second catheter 2 and the third catheter 3, completely releasing the filling balloon 26 from the gap between the second catheter 2 and the third catheter 3 again, and making the axial distance between the second balloon 21 and the third balloon 31 equal to the distance between the second balloon 21 and the third balloon 31 in the contrast region B; filling the filling balloon 26 and the third balloon 31, and naming the closed intestinal tract internal region between the second balloon 21 and the third balloon 31 as a contrast region C; since the axial length of the enclosed contrast region formed each time depends on the length of the filling balloon when it is fully released, all the formed contrast regions are substantially the same axial length when the second catheter 2 is advanced into the colon of the intestine to be contrasted with the third catheter 3; after the contrast region C is formed, contrast agent is infused into the contrast region C through the contrast infusion hole 22, and after the contrast in the contrast region C is completed, the above steps 6-8 are repeated to perform the circulation operation until the most distal part of the colon.

Step 8, as shown in fig. 22, when the second catheter 2 and the third catheter 3 are advanced to the most distal end of the colon, since the lengths of the colon of different patients cannot be completely consistent, so that the remaining space at the tail end of the colon is insufficient to construct an imaging region after the second balloon 21 and the third balloon 31 are filled during imaging, the contrast agent is infused into the interior of the colon from the front end of the third catheter 3 through the action of the sub-connector of the triangular catheter connector 35, so as to ensure that all regions of the whole colon can be imaged.

The invention has the following advantages:

1. the contrast is performed by equidistant section-by-section type contrast from the near end to the far end, the second balloon 21 and the third balloon 31 are matched through the second catheter 2 and the third catheter 3, similar peristaltic section-by-section propelling is adopted for contrast, the filling balloon 26 can limit the maximum stroke difference between the second catheter 2 and the third catheter 3 to be the stroke difference when the filling balloon 26 is completely released, because the front balloon and the rear balloon are adopted for filling and exhausting alternately, the contrast area of the next section and the contrast area of the previous section contain the width overlapped by the second balloon 21 during each section-by-section propelling, so that a leakage area can be ensured not to be generated during propelling the contrast to the far end in the colon, meanwhile, the peristaltic section-by-section propelling is performed by the second balloon 21 and the third balloon 31 during each section of contrast, the two ends of the contrast area of each section are sealed in a sealing way, the phenomenon of overflowing of the contrast agent is avoided, and the device can realize uniform contrast for each section in the colon, the contrast is uniform, the development is clear, the two catheters are pushed section by section, the pushing speed can be greatly improved compared with the pushing by means of the colon peristalsis, and a large amount of time is saved; in the traditional radiography, the catheter infuses the contrast agent in the colon, and the contrast agent is wriggled to the whole colon area by the aid of the colon wriggling, so that a large amount of time is needed, the inner walls of all the areas in the colon can not be guaranteed to be impregnated with the contrast agent, and the contrast agent can not be uniformly distributed.

2. One end of the filling saccule 26 is fixed on the second catheter 2, the other end of the filling saccule is fixed on the third catheter 3, the relative displacement difference between the second catheter 2 and the third catheter 3 in the conveying process can be guaranteed not to exceed the axial length of the filling saccule 26, the displacement stroke difference between the second catheter 2 and the third catheter 3 is limited, the circumferential outer diameter of the saccule is smaller than the inner diameter of the intestinal canal inner wall of a patient after the filling saccule 26 is filled, the filling saccule 26 fills and occupies the central space of the intestinal canal outwards at the central axis of the intestinal canal, so that the contrast agent can only be in the annular cavity area when flowing, the chance that the contrast agent contacts the intestinal canal inner wall is greatly increased, the amount of the contrast agent required to be far less than that of the contrast agent in the traditional operation can complete the dip-dyeing of the circumferential intestinal canal wall, the filling saccule 26 can reduce the space volume and simultaneously make the contrast, can dip-dye more evenly, avoided traditional radiography formula to need inject into a large amount of contrast-media just can the complete 360 degrees circumference inner walls of intestinal, also alleviateed patient's burden simultaneously.

3. The eccentrically clamped multi-spiral tip 34 of the outer jacket of the third conduit 3 essentially comprises two parts: the eccentric wheel fixing ring 341 and the multi-thread threaded pipe 345, the eccentric wheel of the eccentric wheel fixing ring 341 can clamp the third conduit 3 by forward eccentric rotation, and the third conduit 3 can be separated by backward eccentric rotation, so that the third conduit 3 always keeps moving forward when the eccentric clamping multi-thread end 34 is pushed back and forth.

4. The multi-thread pipe 345 and the internal thread end 27 of the eccentrically clamped multi-thread end 34 are matched, when the multi-thread pipe 345 advances forwards, the multi-thread pipe 345 rotates to drive the third guide pipe 3 to rotate synchronously through the eccentric clamping wheel 344 clamped with the third guide pipe 3, when the multi-thread pipe 345 is pulled backwards, the multi-thread pipe 345 rotates reversely, at the moment, the eccentric clamping wheel 344 is separated from the third guide pipe 3 in the process of pulling backwards, so that the third guide pipe 3 cannot rotate reversely, and the multi-thread pipe 345 circularly reciprocates in and out of the internal thread end 27, so that the third guide pipe 3 always keeps unidirectional rotation motion.

5. The design of adopting three-layer pipe can make each step operation more clear and more clear simplification, and moreover for two-layer sleeve pipe, the operation that can realize and effect can be more, makes the operation more stable. The first conduit 1 constructs a channel, and the second conduit 2 and the third conduit 3 alternately perform peristaltic type joint-by-joint propelling radiography, so that the labor division is clear, the operation is simple, and the effect is obvious.

6. First pipe 1 fuses into the anus and plays the effect of founding the passageway, and first sacculus 12 is used for first pipe 1 and anus relatively fixed, also will let in the passageway of the inside rectal segment of anus and expand the completion, has played the effect of airtight shutoff to anus department simultaneously, avoids the inside filthy liquid of rectum to spill over from anus department, and remaining filthy liquid can be through spiral drainage groove and drainage channel drainage to the negative pressure drainage bag in, has guaranteed the inside cleanness of intestinal.

7. The slightly-bent arc bending design of the front end region of the second catheter 2 and the guide wire sleeve 4 can enable the catheter to smoothly align the direction and smoothly push in the bent and bent intestinal tract in the pushing process of the intestinal tract, the situation that the catheter cannot turn can not occur, and the arc bending section at the front end of the third catheter 3 adopts a structure that a wire drawing is fixed to penetrate through the structure and controls the wire drawing through a wire drawing push-pull end head to control the bending degree of the arc bending section at the front end of the third catheter 3 so as to be used for passing through intestinal tracts with different bending degrees.

8. The front end of the guide wire sleeve 4 is uniformly distributed with a plurality of marking rings 33 at intervals of a certain length, which can be used as scales of a measuring tool in a tumor lesion area for detecting the area and the size of the tumor lesion area.

9. Spiral drainage groove 14 of first pipe 1 front end compares in the single drainage hole 17 of conventionality, and spiral drainage groove 14 can be with the liquid drainage of first pipe 1 periphery 360 degrees to spiral drainage groove 14 in, can not take place to have the remaining contrast medium of dead angle position to not be inhaled by the drainage in the intestinal inside of appointed region, and single drainage hole can only make the drainage hole rotate the pipe wall lowest position and just can carry out the drainage to remaining liquid and inhale, has very big limitation.

10. The internal thread end 27 of the second catheter 2, the triangular catheter joint 35 of the third catheter 3 and the push-pull end 42 of the guide wire sleeve 4 are all fixedly provided with pressure maintaining valves 36 which are evenly divided into a plurality of valves in the circumference, the pressure maintaining valves 36 can prevent liquid in the intestinal tract from flowing out from the end of the catheter, and meanwhile, the damping effect is achieved on the sliding third catheter 3, so that the sliding of the third catheter 3 can be immediately stopped after the pushing is stopped, and a certain self-locking effect is achieved.

11. The eccentric fixed ring 341 external diameter that leans on the front group of eccentric tight many spiral ends 34 is greater than the back group, can play spacing effect of blockking at the in-process that inside screw thread end 27 impels, and the spacing fender dish that first sacculus 12 was set up by regional fixed back on first pipe 1 is the same after first pipe 1 gets into patient anus inside, and spacing fender dish keeps off outside the anus and prevents too much regional pipe from being let in.

12. The inflating joints of the first catheter 1, the second catheter 2 and the third catheter 3 and the auxiliary joints of the infusion joint and the triangular catheter joint 35 of the third catheter 3 are all connected with one-way vent valves, so that gas or liquid can only pass through in one way, and meanwhile, the drainage tube of the outer sleeve is connected with a negative pressure drainage bag, so that residual contrast medium and dirty liquid can be effectively sucked into the bag.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A telescopic peristaltic multi-balloon colon retrograde gas-liquid dual contrast catheter device is characterized by comprising a first catheter, a second catheter sleeved in the first catheter, a third catheter sleeved in the second catheter and a guide wire sleeve sleeved in the third catheter, wherein a limiting blocking disc, a first balloon and a first balloon one-way inflation connector are arranged on the first catheter, the first balloon is positioned on the front side of the limiting blocking disc, the first balloon one-way inflation connector is communicated with the first balloon, and the first balloon one-way inflation connector is positioned on the rear side of the limiting blocking disc; the second catheter is provided with a second balloon, an imaging infusion hole, an imaging infusion joint, a second balloon one-way inflation joint and a filling balloon one-way inflation joint, the front end of the second catheter is communicated with one side of the filling balloon, the other side of the filling balloon is arranged on the third catheter, the second balloon one-way inflation joint is communicated with the second balloon, the imaging infusion joint is communicated with the imaging infusion hole, and the filling balloon one-way inflation joint is communicated with the filling balloon; the third catheter is provided with a third balloon and a third balloon one-way inflation joint which are communicated, the third balloon is positioned at the front end of the filling balloon, the third balloon one-way inflation joint is positioned at the rear side of the second balloon one-way inflation joint, a guide wire is arranged in the guide wire sleeve, and the front end of the third catheter is provided with a marking ring.

2. The telescopic peristaltic multi-balloon colon retrograde gas-liquid dual contrast catheter device according to claim 1, wherein a spiral drainage groove is formed in the front end of the first catheter, the spiral drainage groove smoothly extends into the wall of the first catheter after the number of spiral turns exceeds one turn to form a drainage channel, the drainage channel is communicated with a drainage hole formed in the first catheter, the drainage hole is communicated with a drainage tube, and the drainage tube is communicated with a negative pressure drainage bag.

3. The telescopic peristaltic multi-balloon colon retrograde gas-liquid dual contrast catheter device according to claim 2, wherein a push-pull baffle ring is arranged at the rear end of the first catheter.

4. The telescopic peristaltic multi-balloon colon retrograde gas-liquid dual contrast catheter device according to claim 1, wherein an internal thread end is arranged at the rear end of the second catheter, and a plurality of multi-thread internal thread grooves are uniformly distributed on the circumference of the inner wall of the internal thread end.

5. The telescopic peristaltic multi-balloon colon retrograde gas-liquid dual contrast catheter device according to claim 4, wherein a push-pull ring is arranged on the second catheter, and the push-pull ring is positioned on the front side of the internal thread end.

6. The telescopic peristaltic multi-balloon colon retrograde gas-liquid dual angiography catheter device according to claim 5, wherein the third catheter is provided with an eccentrically clamped multi-spiral tip, the eccentrically clamped multi-spiral tip comprises two eccentric fixing rings and a connecting pipe, two ends of the connecting pipe are respectively communicated with the two eccentric fixing rings, a plurality of eccentric clamping wheel grooves are formed in the eccentric fixing rings, and eccentric clamping wheels are arranged in the eccentric clamping wheel grooves.

7. The device of claim 6, wherein the eccentric clamping wheel on the front side is connected with a multi-thread threaded pipe, and the multi-thread threaded pipe is in threaded connection with the multi-thread inner thread groove.

8. The telescopic peristaltic multi-balloon colon retrograde gas-liquid dual contrast catheter device according to claim 7, wherein a triangular catheter joint is connected to the rear end of the third catheter, and the guide wire sleeve penetrates through the triangular catheter joint.

9. The device of claim 8, wherein a pressure-retaining valve is disposed in the triangular catheter joint.

10. The telescopic peristaltic multi-balloon colon retrograde gas-liquid dual contrast catheter device according to claim 9, wherein a push-pull tip is arranged at the rear end of the guide wire sleeve.