CN215535349U

CN215535349U - Choledochus built-in type gallbladder drainage plastic stent easy to take out

Info

Publication number: CN215535349U
Application number: CN202121290555.6U
Authority: CN
Inventors: 刘冰熔; 赵丽霞; 孔令建; 刘丹; 李德亮; 郑庆芬
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-06-10
Filing date: 2021-06-10
Publication date: 2022-01-18
Anticipated expiration: 2031-06-10

Abstract

The utility model relates to the field of medical instruments, in particular to an easily-taken choledochus built-in type gallbladder drainage plastic stent which comprises a gallbladder drainage stent, wherein the gallbladder drainage stent is a plastic catheter, the gallbladder drainage stent comprises a head part and a body part, the rear end of the head part is connected with the front end of the body part, the head part comprises a drainage inlet, and the rear end of the body part comprises a drainage outlet; the head of the gallbladder drainage support is inserted into the gallbladder, the body part of the gallbladder drainage support is positioned in the gallbladder tube and the common bile duct, and the drainage outlet at the rear end of the body part is positioned in the common bile duct. The bracket taking-out traction wire is connected with the tail end of the body part of the bracket, after the bracket is placed, the tail end of the bracket taking-out traction wire is placed in the duodenum, and when the bracket is taken out, the bracket can be smoothly taken out from the duodenum by using endoscope biopsy forceps. The drainage outlet of the gallbladder drainage bracket is positioned in the common bile duct and does not enter duodenum, so that duodenal fluid cannot flow back into the gallbladder, and the normal anatomical structure and function of the gallbladder and the common bile duct are ensured.

Description

Choledochus built-in type gallbladder drainage plastic stent easy to take out

Technical Field

The utility model relates to the field of medical instruments, in particular to an easily-taken choledochus built-in type gallbladder drainage plastic stent.

Background

Acute cholecystitis is a common clinical acute and severe condition, and patients with acute cholecystitis usually have symptoms such as abdominal pain, fever and the like and often need emergency treatment. The existing treatment means mostly adopt medicine conservative treatment, and the acute stage is not suitable for operation treatment, so that patients need to endure great pain for a long time. In this case, gallbladder intubation drainage is an effective etiological treatment. However, the success rate of gallbladder intubation by the conventional ERCP technique is not high, so that the technique is rarely used clinically. In recent years, development of medical technology and equipment has brought forward a new treatment technology of the superfine choledochoscope, so that the success rate of gallbladder intubation drainage under an endoscope is obviously improved, and the gallbladder and bile duct drainage can be performed on patients with acute cholecystitis, thereby treating diseases. The traditional gall bladder stents are common stents to complete the drainage of the gall bladder-duodenum. The gallbladder-duodenum drainage stent has the following defects:

1. the existing gallbladder-duodenum drainage stent changes the anatomical structure of a patient, so that the function of the gallbladder is greatly influenced.

2. The drainage stent is communicated with the gallbladder and the duodenal tube, so that duodenal fluid possibly flows back into the gallbladder, and the gallbladder infection is caused to aggravate the symptoms.

3. The prior drainage stent can not arrange the tail end of the stent in a biliary main tube, and thus the stent can not be taken out.

Disclosure of Invention

In order to solve the problems, the utility model aims to provide an easily-taken choledochus built-in type gallbladder drainage plastic stent which is easy to take out and does not cause the duodenal fluid to flow back into a gallbladder.

The purpose of the utility model is realized by the following technical scheme:

the utility model provides an easily-taken choledochus built-in type gallbladder drainage plastic support which comprises a gallbladder drainage support, wherein the gallbladder drainage support is a plastic catheter and comprises a head part and a body part, the rear end of the head part is connected with the front end of the body part, the head part comprises a drainage inlet, and the rear end of the body part comprises a drainage outlet; the head of the gallbladder drainage support is inserted into the gallbladder, the body part of the gallbladder drainage support is positioned in the gallbladder tube and the common bile duct, and the drainage outlet at the rear end of the body part is positioned in the common bile duct.

Further, the head includes a C-shaped ring segment.

Further, the side wall of the C-shaped ring section comprises a plurality of drainage holes as drainage inlets.

Further, the end of the C-shaped ring segment includes an opening that serves as a drainage inlet.

Further, the body includes a straight segment and a curved segment, the straight segment being disposed between the curved segment and the head.

Furthermore, the bending angle of the bending section is 40-50 degrees, the length of the straight section is 5-7cm, and the length of the bending section is 3 cm.

Further, the gallbladder drainage support comprises a marking ring, and the marking ring is arranged at the connecting part of the head part and the body part of the gallbladder drainage support.

Further, the bracket taking-out traction wire is included, and the front end of the bracket taking-out traction wire is connected with the rear end of the body.

Furthermore, the front end of the bracket taking-out traction wire is embedded in the pipe wall at the rear end of the body, and the rear end of the bracket taking-out traction wire comprises a spherical knot.

Furthermore, the drawing wire taken out of the bracket is a silk wire, and the length of the drawing wire taken out of the bracket is 5-7 cm; the stent is taken out and the traction wire passes through the duodenal papilla, and the spherical knot is positioned in the duodenum.

According to the choledochus built-in type gallbladder drainage plastic stent easy to take out, the drainage outlet is located in the choledochus, the drainage outlet does not enter duodenum, duodenal fluid cannot flow back into the gallbladder, and the stent is simple to operate, convenient and practical.

Drawings

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

FIG. 1 is a front view of a common bile duct internal gallbladder drainage plastic stent easy to remove according to an embodiment of the utility model;

FIG. 2 is a perspective view of a common bile duct built-in type gallbladder drainage plastic stent easy to be taken out according to an embodiment of the utility model;

FIG. 3 is a perspective view of the rear part of a common bile duct built-in type gallbladder drainage plastic stent easy to take out according to the embodiment of the utility model;

FIG. 4 is a transverse cross-sectional view of a posterior end of a body of a gallbladder drainage stent in accordance with an embodiment of the present invention;

fig. 5 is a schematic working position diagram of the choledochus built-in type gallbladder drainage plastic stent easy to take out according to the embodiment of the utility model.

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. It is to be understood that the described embodiments are merely exemplary of a portion of the utility model and not all 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.

The choledochus built-in type gallbladder drainage plastic stent easy to take out in the embodiment of the utility model is shown in figures 1 to 4 and comprises a gallbladder drainage stent 10 and a stent taking-out traction wire 20.

The gallbladder drainage support 10 adopts a plastic catheter, the gallbladder drainage support 10 comprises a head part, a body part and a marking ring 13, and the rear end of the head part is connected with the front end of the body part. The marking ring 13 is arranged at the connecting part of the head part and the body part of the gallbladder drainage support and is embedded on the outer wall of the plastic catheter, the marking ring 13 mainly plays a role in developing, so that an operator can accurately and completely convey the head part (drainage segment) to the gallbladder 04 through the common bile duct 01 and the cystic duct 05, the marking ring 13 stays at the position of a tube opening of the cystic duct 05, the body part of the gallbladder drainage support is positioned in the cystic duct 05 and the common bile duct 01, and an opening 14 (drainage outlet) at the rear end of the body part is positioned in the middle of the common bile duct 01.

The head part is used as a drainage tube and is provided with a C-shaped ring section 10A, and a plurality of drainage inlets of the gall bladder drainage support 10 are arranged on the C-shaped ring section 10A.

A plurality of drainage holes 12 are symmetrically formed in the side wall of the C-shaped ring section 10A and are used as drainage inlets of the gallbladder drainage support 10, and an opening 11 at the front end of the C-shaped ring section 10A is also used as a drainage inlet of the gallbladder drainage support 10.

The body part comprises a straight line section 10B and a curved section 10C, the straight line section 10B is arranged between the curved section 10C and the head part, and an opening 14 at the rear end of the curved section 10C is used as a drainage outlet of the gallbladder drainage bracket 10.

The bending angle alpha of the bending section 10C is 40-50 degrees. The length of the straight section 10B is 5-7cm, and the length of the curved section 10C is 3 cm.

The stent retrieval traction wire 20 has a length of 5 cm. The front end of the stent extraction traction wire 20 is embedded in the tube wall at the rear end of the body bending section 10C, the rear end of the stent extraction traction wire 20 is provided with a spherical knot 21, the stent extraction traction wire 20 is positioned in the common bile duct 01 and enters the duodenum 02 after passing through the duodenal papilla 03, and the spherical knot 21 is positioned in the duodenum 02.

The choledochus built-in type gallbladder drainage plastic stent which is easy to take out in the embodiment of the utility model is mainly used for drainage of bile duct gallbladder of a patient with acute cholecystitis of gallbladder or under other conditions. The choledochus built-in type gallbladder drainage plastic stent easy to take out in the embodiment of the utility model mainly comprises a gallbladder drainage stent and a stent taking-out traction wire, and the gallbladder drainage stent is of an integral plastic catheter structure. The front end and the rear end of the gallbladder drainage support are both opened, so that the internal drainage channel cavity can be communicated from front to back.

The gallbladder drainage support can be divided into a C-shaped annular head part and a body part with a certain curvature. The C-shaped annular head has a certain clamping effect. A plurality of drainage holes 12 are symmetrically arranged on the pipe wall of the C-shaped annular head part. The middle section of the gallbladder drainage bracket body is bent, and the bending angle alpha is about 45 degrees. The bending section has the function of enabling the gallbladder drainage stent to pass through at the junction of the gallbladder tube and the common bile duct without tension, and ensuring that the gallbladder drainage stent does not generate bending stress.

The tube wall of the lower end port of the gall bladder drainage stent is connected with a stent extraction traction wire 20, and the stent extraction traction wire 20 is a slender silk thread with the length of about 5-7 cm. The stent retrieval pull wire 20 extends through the common bile duct 01 into the duodenum 02. The tail end of the bracket taking-out traction wire is provided with a small spherical knot 21, so that the bracket taking-out traction wire 20 can be clamped conveniently by biopsy forceps or other operating forceps, and the gallbladder drainage bracket can be smoothly pulled back and taken out through a duodenal papilla 03.

The utility model has the innovative technical points and the beneficial effects that:

1. the gallbladder drainage plastic stent in the above embodiment adopts the choledochus built-in type gallbladder drainage plastic stent which is easy to take out to drain bile of a patient with acute gallbladder inflammation or cystic duct obstruction into the choledochus 01 according to a normal path mode, so that the bile can completely ensure the normal anatomical structure function of a biliary system through a normal path of the choledochus 01-gallbladder 04. And effectively ensures that the duodenal fluid cannot reversely flow into the gallbladder 04, thereby avoiding the condition that the gallbladder 04 is seriously infected. Compared with the existing cholecysto-duodenal drainage stent, the cholecystectomy drainage plastic stent of the embodiment physiologically restores the normal circulation of bile, avoids possible countercurrent of duodenal fluid and greatly ensures the safety of patients. Has great potential effect, significance and value on the treatment of acute gallbladder inflammation.

2. Above embodiment gall-bladder drainage plastic stent gall-bladder drainage support adopts the crooked structure in middle part, has guaranteed that gall-bladder drainage support is whole inside through gall-bladder 04, gall-bladder duct 05, common bile duct 01, can match the crooked trend of self according to the crooked trend of human tissue pipe, has guaranteed that gall-bladder drainage support implants the back, and support self can not produce crooked stress, can not take place to cause the damage of common bile duct 01 wall because of stress resilience.

3. The drainage tube of gall bladder drainage support adopts the opening ring structure of C shape, can enough play the position screens effect at gall bladder pipe 05 mouthful, guarantees that the drainage section can not follow the inside slippage of gall bladder 04, can effectually again be in the great area space of the inside contact of gall bladder 04, and the port of drainage section front end can be cooperated in the multiunit drainage hole of drainage section, can carry out bile drainage to gall bladder 04 inside as far as.

4. The embedded support on the pipe wall of the port at the rear end of the gallbladder drainage support is taken out of the traction line, so that the gallbladder drainage support can be pulled back and taken out in the later period, the operation of a doctor is greatly facilitated, and the safety implementation of the built-in support of the common bile duct is ensured.

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. An easily-taken choledochus built-in type gallbladder drainage plastic support comprises a gallbladder drainage support, wherein the gallbladder drainage support is a plastic catheter, and is characterized in that the gallbladder drainage support comprises a head part and a body part, the rear end of the head part is connected with the front end of the body part, the head part comprises a drainage inlet, and the rear end of the body part comprises a drainage outlet; the head of the gallbladder drainage support is inserted into the gallbladder, the body part of the gallbladder drainage support is positioned in the gallbladder tube and the common bile duct, and the drainage outlet at the rear end of the body part is positioned in the common bile duct.

2. The easy-to-remove common bile duct internal gallbladder drainage plastic stent of claim 1, wherein the head comprises a C-shaped ring segment.

3. The easily removable common bile duct built-in gallbladder drainage plastic stent of claim 2, wherein the side wall of the C-shaped ring segment comprises a plurality of drainage holes as drainage inlets.

4. The easy-to-remove common bile duct internal gallbladder drainage plastic stent of claim 2, wherein the end of the C-shaped ring segment comprises an opening as a drainage inlet.

5. The easy-to-remove common bile duct internal gallbladder drainage plastic stent of claim 1, wherein the body comprises a straight section and a curved section, the straight section is arranged between the curved section and the head.

6. The easily removable common bile duct built-in gallbladder drainage plastic stent according to claim 5, wherein the bending angle of the bending section is 40-50 degrees, the length of the straight line section is 5-7cm, and the length of the bending section is 3 cm.

7. The easily removable common bile duct built-in type gallbladder drainage plastic stent of claim 5, wherein the gallbladder drainage stent comprises a marking ring, and the marking ring is arranged at the connecting part of the head part and the body part of the gallbladder drainage stent.

8. The easily removable common bile duct internal gallbladder drainage plastic stent as claimed in claim 1, which comprises a stent removal traction wire, the front end of which is connected with the back end of the body.

9. The easily removable common bile duct internal gallbladder drainage plastic stent of claim 8, wherein the front end of the stent removal traction wire is embedded in the wall of the rear end of the body, and the rear end of the stent removal traction wire comprises a spherical knot.

10. The easy-to-remove common bile duct built-in type gallbladder drainage plastic stent of claim 9, wherein the stent-removing traction wire is a silk wire, and the length of the stent-removing traction wire is 5-7 cm; the stent is taken out and the traction wire passes through the duodenal papilla, and the spherical knot is positioned in the duodenum.