CN214343881U

CN214343881U - Bead-shaped nasobiliary drainage tube

Info

Publication number: CN214343881U
Application number: CN202022785797.4U
Authority: CN
Inventors: 林美举; 张�诚
Original assignee: Affiliated Zhongshan Hospital of Dalian University
Current assignee: Affiliated Zhongshan Hospital of Dalian University
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-10-08
Anticipated expiration: 2030-11-26

Abstract

The utility model provides a beaded nasobiliary drainage tube, which is a single-channel tube, the front end of which is in an amoeba spiral shape, and the tube wall of the head end is provided with a plurality of arc-shaped narrow structures which are beaded; the joints of two adjacent arc-shaped narrow structures are in continuous sealing connection, and internal pipelines are communicated with a main pipeline of the drainage tube; the arc-shaped narrow structure is a pipeline structure with a wide middle part and narrow two ends, and the cross sections at the two ends of the arc-shaped narrow structure are tapered arc structures facing the extension directions of the two ends. The utility model can be applied to bile drainage of all types of intrahepatic and extrahepatic bile ducts; the nasal bile duct can be cut off from the narrow part according to the length of the extrahepatic bile duct, and complications such as bile drainage unsmooth, pain, perforation and the like caused by the over-deep placement of the drainage tube are avoided.

Description

Bead-shaped nasobiliary drainage tube

Technical Field

The utility model relates to a medical technology of wicresoft and surgical instruments technical field especially relate to a beaded drainage tube for nose courage.

Background

Endoscopic Retrograde Cholangiopancreatography (ERCP) is an important measure for the current diseases of liver, gallbladder and pancreas, including choledocholithiasis, obstructive jaundice, bile duct stenosis, acute pancreatitis, complications of biliary tract after liver transplantation, and the like. Compared with the traditional operation, the technology has the advantages of small wound, exact curative effect, quick recovery, strong repeatability and the like. Endoscopic rhinocholangiodrainage (ENBD) is another conventional technique for ERCP procedures. Bile is drained through the placed nasal bile duct, so that the incidence rate of acute cholangitis after the ERCP operation is reduced; judging the bile duct verification recovery degree by observing bile characters and flow; the incidence of postoperative biliary hemorrhage can be reduced by injecting hemostatic drugs; normal saline is injected into the bile duct through nose in the cholecystectomy, so that whether the bile duct is smooth or not can be judged, and whether biliary leakage occurs or not can be judged; after cholecystectomy, contrast agent is injected through the nasal bile duct, and whether choledocholithiasis or secondary choledocholithiasis occurs can be judged.

The currently used nasobiliary tube comprises a single pigtail nasobiliary tube and a loop type nasobiliary tube, the head end of the single pigtail nasobiliary tube has a good anti-displacement effect after being in a loop shape, but the nasobiliary tube is generally applied to patients with obvious expansion of intrahepatic and extrahepatic bile ducts, if the intrahepatic and extrahepatic bile ducts are not expanded, the head end of the nasobiliary tube cannot be in a loop shape, and a formed arc-shaped tube easily presses the wall of the bile duct to cause postoperative pain, bile duct ulcer, bleeding and other complications. The loop type nasobiliary drainage tube has a straight line head end, two 60-degree body parts, and the angle is consistent with the angle of common bile duct-duodenum-gastric sinus, and the loop-forming tube section of the placed nasobiliary tube is just fixed at the position by the tube wall tension, so that the good effect of preventing the nasobiliary drainage tube from shifting is achieved. The length of the straight line duct at the front end of the loop tube is fixed to be 12cm, and the best drainage effect can be achieved when the straight line duct is positioned in the left hepatic duct, the right hepatic duct, the common hepatic duct and the common bile duct. However, the following problems exist in clinic: (1) the lengths of common bile duct, common hepatic duct and left and right hepatic ducts of patients of different ages, sexes, heights and the like are different; if the extrahepatic bile duct is short, the head end of the drainage tube is often placed into the deep intrahepatic bile duct under the action of the loop tube, so that the drainage quantity of bile is very small, and even no bile is led out; (2) the diameter of the normal left hepatic duct and the normal right hepatic duct is 3-6mm, the intrahepatic bile duct becomes thinner and thinner, the deeper the drainage tube is placed at the head end, the greater the stimulation to the wall of the bile duct is, the liver moves up and down along with the respiration, and the right upper abdominal pain symptom is easy to appear; (3) the extrahepatic bile duct is basically in a straight line, the intrahepatic bile duct is easy to form an angle, when the angle is too large, the straight head end cannot enter the intrahepatic bile duct and is propped against the wall of the bile duct, and under the action of a loop tube, pain is easy to occur, even ulcer and perforation of the wall of the bile duct occur, so that a drainage tube enters the parenchyma of the liver, and complications such as liver abscess, bleeding and the like are caused.

SUMMERY OF THE UTILITY MODEL

According to the technical problem provided by the above, a beaded nasobiliary drainage tube is provided. The utility model discloses mainly utilize the narrow structure of a plurality of arcs that is equipped with on the drainage tube head end pipe wall, cut the nose courage drainage tube from the junction of the narrow structure of two adjacent arcs according to extrahepatic bile duct length to it is not smooth to avoid the drainage tube to put into the pain and the bile drainage that the too dark arouses. The utility model discloses a technical means as follows:

a bead-like nasobiliary drainage tube is a single-channel tube, the front end of the drainage tube is in an amoeba spiral shape, and a plurality of arc-shaped narrow structures are arranged on the tube wall at the head end and are in a bead-like shape;

the joints of two adjacent arc-shaped narrow structures are in continuous sealing connection, and internal pipelines are communicated with a main pipeline of the drainage tube;

the arc-shaped narrow structure is a pipeline structure with a wide middle part and narrow two ends, and the cross sections of the two ends of the arc-shaped narrow structure are tapered arc structures extending towards the two ends;

side holes are formed in the main pipeline and each arc-shaped narrow structure and used for draining bile;

the nasal biliary drainage tube is cut off from the joint of two adjacent arc-shaped narrow structures according to the length of the extrahepatic biliary tube, so that pain caused by over-deep placement of the drainage tube and unsmooth bile drainage are avoided.

Furthermore, the outer diameter of the drainage tube is 7Fr-10Fr, and the inner diameter of the drainage tube is 5Fr-8.5 Fr.

Further, the outer diameter of the drainage tube is 7Fr, and the inner diameter is 5 Fr.

Further, the outer diameter of the drainage tube is 8.5Fr, and the inner diameter is 7 Fr.

Further, the outer diameter of the drainage tube is 10Fr, and the inner diameter is 8.5 Fr.

Further, the narrow structure of arc is equipped with 2 ~ 4.

Further, the length of the pipe section of each arc-shaped narrow structure is 1cm, the outer diameter of the narrowest part is 5Fr, and the inner diameter is 3.5 Fr; the interval between two adjacent arc-shaped narrow structures is 2 cm.

Further, the main pipeline is at least provided with three side holes.

Further, each arc-shaped narrow structure is provided with a side hole.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model provides a string of beads form nose courage drainage tube can be applied to the bile drainage of all types of intrahepatic and extrahepatic bile ducts.

2. The utility model provides a string of beads form nose courage drainage tube can cut off the nose bile duct from narrow according to extrahepatic bile duct length, avoids the drainage tube to put into bile drainage that the too dark arouses and is smooth, painful, perforation scheduling complication.

Based on the above reasons, the utility model can be widely popularized in the fields of minimally invasive medical technology, surgical instruments and the like.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is the schematic structural diagram of the utility model after the arc-shaped narrow structure is cut off.

Fig. 3 is a schematic structural view of the present invention inserted into the bile duct.

In the figure: 1. an arc-shaped narrow structure; 2. side holes.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

As shown in figures 1-3, the utility model provides a beaded nose courage drainage tube, the drainage tube is the single channel pipe, and the front end is the amebic heliciform, and the head end pipe wall is equipped with a plurality of arc stenosis structures 1, is beaded. The joints of two adjacent arc-shaped narrow structures 1 are in continuous sealing connection, and the internal pipelines are communicated with the main pipeline of the drainage tube; the arc-shaped narrow structure 1 is a pipeline structure with a wide middle part and narrow two ends, and the cross sections at the two ends are of tapered arc structures facing the extension directions of the two ends. The trunk line of drainage tube and every all be equipped with side opening 2 on the pipe wall of the narrow structure of arc 1 for the drainage bile. The nasal bile duct is cut from the arc-shaped narrow structure 1 according to the length of the extrahepatic bile duct, so that pain caused by over-deep placement of the drainage tube and unsmooth bile drainage are avoided.

The outer diameter of the drainage tube is 7Fr-10Fr, and the inner diameter of the drainage tube is 5Fr-8.5 Fr.

The narrow structure of arc 1 is equipped with 2 ~ 4. The length of the pipe section of each arc-shaped narrow structure 1 is 1cm, the outer diameter of the narrowest part is 5Fr, and the inner diameter is 3.5 Fr; the interval between two adjacent arc-shaped narrow structures 1 is 2 cm.

Example 1

In the embodiment, the outer diameter of the drainage tube is 7Fr, the inner diameter of the drainage tube is 5Fr, and the main pipeline of the drainage tube is at least provided with three side holes 2. The number of the arc-shaped narrow structures 1 is 2, the length of each tube section of each arc-shaped narrow structure 1 is 1cm, the interval is 2cm, the outer diameter of the narrowest part is 5Fr, and the inner diameter is 3.5 Fr. Each arc-shaped narrow structure 1 is provided with a side hole 2.

Example 2

Different from the embodiment 1, in the embodiment, the outer diameter of the drainage tube is 8.5Fr, the inner diameter of the drainage tube is 7Fr, and the main pipeline of the drainage tube is provided with three side holes 2. The number of the arc-shaped narrow structures 1 is 3.

Example 3

Different from the embodiment 1, in the embodiment, the outer diameter of the drainage tube is 10Fr, the inner diameter of the drainage tube is 8.5Fr, and the main pipeline of the drainage tube is provided with four side holes 2. The number of the arc-shaped narrow structures 1 is 4.

The utility model discloses drainage tube application method as follows:

the duodenoscope is placed through the mouth, after various operations under the endoscope are finished, the length of the extrahepatic bile duct is visually observed by using an incision knife, the length of the anterior segment nasal bile duct is determined, the nasal bile duct is transversely cut at the narrow part of the drainage tube, the short nasal bile drainage tube is placed into the left/right hepatic ducts under the guide of the guide wire, and finally the duodenoscope and the guide wire are withdrawn. The mouth and the nose of the drainage tube outside the nasal gallbladder are converted and fixed.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. A beaded nasobiliary drainage tube is characterized in that the drainage tube is a single-channel tube, the front end of the drainage tube is in an ameba spiral shape, and a plurality of arc-shaped narrow structures (1) are arranged on the tube wall at the head end and are beaded;

the joints of two adjacent arc-shaped narrow structures (1) are in continuous sealing connection, and internal pipelines are communicated with a main pipeline of the drainage tube;

the arc-shaped narrow structure (1) is a pipeline structure with a wide middle part and narrow two ends, and the cross sections of the two ends of the arc-shaped narrow structure are tapered arc structures extending towards the two ends;

side holes (2) are formed in the main pipeline and each arc-shaped narrow structure (1) and are used for draining bile;

the nasal biliary drainage tube is cut off from the joint of two adjacent arc-shaped narrow structures (1) according to the length of the extrahepatic biliary tube, so that pain caused by over-deep placement of the drainage tube and unsmooth bile drainage are avoided.

2. A beaded nasobiliary drainage tube according to claim 1, wherein the drainage tube has an outer diameter of 7Fr to 10Fr and an inner diameter of 5Fr to 8.5 Fr.

3. The beaded nasobiliary drainage tube of claim 2, wherein the drainage tube has an outer diameter of 7Fr and an inner diameter of 5 Fr.

4. The beaded nasobiliary drainage tube of claim 2, wherein the drainage tube has an outer diameter of 8.5Fr and an inner diameter of 7 Fr.

5. The beaded nasobiliary drain of claim 2, wherein the drain has an outer diameter of 10Fr and an inner diameter of 8.5 Fr.

6. A beaded nasobiliary drainage tube according to claim 1, wherein there are 2-4 of the arcuate narrowing structures (1).

7. A beaded nasobiliary drainage tube according to claim 1 or 6, wherein each of the arc-shaped narrow structures (1) has a length of 1cm, an outer diameter of 5Fr at the narrowest portion, and an inner diameter of 3.5 Fr; the interval between two adjacent arc-shaped narrow structures (1) is 2 cm.

8. A beaded nasobiliary drainage tube according to claim 1, wherein the main conduit is provided with at least three side holes (2).

9. A beaded nasobiliary drainage tube according to claim 1, wherein each of the arcuate narrow structures (1) is provided with a side hole (2).