CN104800959A - Water bag type gall external drainage tube - Google Patents

Abstract

The invention discloses a water bladder type bile external drainage tube, which comprises a drainage tube section I, a drainage tube section II and a drainage tube section III connected in sequence, the outer wall of the drainage tube section II is sleeved with a balloon film, and the outer wall of the balloon film is The cross section is quincunx-shaped. The drainage tube section I is provided with a pipeline I communicating with the drainage tube section II and a pipeline II communicating with the balloon membrane. The other end of the pipeline II is connected to the tube through a cap. The other end of the tube is connected with a three-way valve, the cap has a cylindrical head and a truncated conical tail, and the small end of the truncated conical tail is fixedly connected to the cylindrical head. The invention has strong tension and prevents the water bladder type bile external drainage tube from protruding; it is suitable for common bile ducts of various diameters; and there is no damage to the bile duct mucosa, duodenal papilla and upper gastrointestinal mucosa during insertion and removal; While preventing displacement of the water bladder external drainage tube for bile, it will not cause biliary obstruction.

Description

Water bladder external drainage tube for bile

technical field

The invention relates to the field of medical devices, in particular to a water bladder type bile external drainage tube.

Background technique

At present, with the continuous development of endoscopic technology and the continuous improvement of its accessories, duodenoscopy (ERCP) has become an important measure for the treatment of hepatobiliary and pancreatic diseases, including common bile duct stones, bile duct injury, bile duct stricture, and liver transplantation. Postoperative biliary complications, etc. Compared with traditional laparotomy, this technique has the advantages of less trauma, high safety factor, and faster recovery. Under direct vision, it can detect hepatobiliary and pancreatic diseases that cannot be detected by conventional liver, gallbladder, spleen and pancreas CT, ultrasound and magnetic resonance examinations, and treat them at the same time, such as duodenal papillitis, papillary stenosis, parapapillary diverticulum, duodenal Intestinal papillae too long, abnormal biliopancreatic confluence, etc.

Endoscopic nasobiliary drainage is a routine technique in ERCP operations, which can be directly applied to the treatment of obstructive jaundice, acute suppurative cholangitis, bile leakage and other diseases; postoperative nasobiliary drainage can fully drain bile and reduce biliary pressure , can reduce the probability of postoperative pancreatitis and cholangitis, and can observe the properties and outflow of bile. For acute suppurative cholangitis and delayed biliary bleeding, sensitive antibiotics or hemostatic drugs can be injected through the nasobiliary drainage tube. The clinical effect is remarkable.

The head of the nasobiliary drainage tube in clinical application can entangle itself in the bile duct, but the stimulation of the head of the drainage tube to the bile duct mucosa can lead to local mucosal reactive hyperplasia; Damage to the mucosa of the tract can even induce complications such as acute cholangitis, acute pancreatitis, and upper gastrointestinal bleeding; the irritation of the throat by the drainage tube often leads to severe nausea and even vomiting in patients. Because the nasobiliary duct relies on its own tension and is entrenched in the drainage tube, due to the lack of supporting force, the drainage tube can prolapse by itself.

Contents of the invention

According to the technical problem raised above, a water bladder external drainage tube for bile is provided.

The technical means adopted in the present invention are as follows:

A water bladder type bile external drainage tube, comprising drainage tube section I, drainage tube section II and drainage tube section III connected in sequence, the outer wall of the drainage tube section II is sleeved with a balloon film, and the cross section of the balloon film is plum-shaped shape,

The drainage tube section I is provided with a pipeline I communicating with the drainage tube section II and a pipeline II communicating with the balloon membrane. The other end of the pipeline II is connected to the tube through a cap, and the other end of the tube is connected to the tube. Three-way valve connection,

The cap has a cylindrical head and a truncated conical tail, the small end of the truncated conical tail is fixedly connected to the cylindrical head, and the cylindrical head is provided with a ring that matches the outer diameter of the pipeline II. The through hole I, the outer diameter of the pipe II and the through hole I are clearance fit,

The tube has a frustum-shaped head, the outer surface of the frustum-shaped head is provided with external threads, and the frustum-shaped tail has a through hole II matching the frustum-shaped head, and the through hole II is far away from the One end of the cylindrical head is provided with an internal thread matching the external thread, and a smooth part is also provided on the through hole II, and the smooth part is located between the internal thread and the cylindrical head ,

The small end of the frustum-shaped head matches the inner diameter of the pipe II, and the small end of the frusto-conical head and the inner diameter of the pipe II are an interference fit,

The through hole I communicates with the through hole II,

The outer wall of the drainage pipe section III is provided with side holes.

The end of the drainage tube section III far away from the drainage tube section II is provided with a cap, and the cap has an arc surface, and the arc surface is provided with a through hole III through which the guide wire passes.

Both ends of the balloon membrane are respectively connected to the outer wall of the drainage tube section II through metal rings.

The metal ring is made of X-ray opaque material.

The tube is threadedly connected to the three-way valve.

There is a snap-fit connection between the tube and the three-way valve.

In the working state, the pipeline II passes through the through hole I, the frustum-shaped head enters into the through-hole II, and the small end of the frustum-shaped head is inserted into the pipeline II. , the part of the pipeline II located between the frustum-shaped head and the smooth part is squeezed and deformed so that it fits closely with the frusto-conical head and the smooth part, and then passes through the The internal thread and the external thread cooperate to tighten the cap to the frustoconical head.

The water passes through the three-way valve sequentially, the tube and the pipeline II enter into the balloon membrane and fill it, at this time, the balloon membrane expands outward under the action of water to form a water bag.

The present invention has the following advantages:

1. The water bladder external drainage tube for bile relies on the filling water bladder to have strong tension on the duodenal papilla and the wall of the bile duct, which can prevent the water bladder external drainage tube from protruding;

2. The size of the water bladder of the water bladder external drainage tube for bile is variable (1.0cm, 1.5cm, 2.0cm), suitable for common bile ducts of various diameters;

3. The head end of the water bladder external drainage tube for bile is a straight tube (drainage tube segment III), and there is no damage to the bile duct mucosa, duodenal papilla and upper gastrointestinal mucosa during insertion and removal, avoiding the bending of the head end of the conventional drainage tube Numerous complications and discomfort reactions caused by patients;

4. The water sac of the water sac-type bile external drainage tube is plum-shaped, bile can pass through smoothly, and the drainage tube is prevented from being displaced without causing biliary obstruction.

Based on the above reasons, the present invention can be widely applied in the fields of medical devices and the like.

Description of drawings

The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

Fig. 1 is a schematic diagram of the structure of a water-sac-type bile external drainage tube in a non-expanded state of the balloon membrane in a specific embodiment of the present invention.

Fig. 2 is an enlarged schematic diagram of part I in Fig. 1 .

Fig. 3 is a schematic structural view of a cap in a specific embodiment of the present invention.

Fig. 4 is a schematic structural view of the frustum-shaped head of the pipe in a specific embodiment of the present invention.

Fig. 5 is a schematic diagram of the structure of a water-sac-type bile external drainage tube in the expanded state of the balloon membrane in a specific embodiment of the present invention.

Fig. 6 is a schematic structural view of a water bladder external drainage tube for bile being inserted into the bile duct in a specific embodiment of the present invention.

Fig. 7 is a schematic structural view of a water bladder external drainage tube for bile in a specific embodiment of the present invention when it is inserted into the dilated state of the posterior capsule of the bile duct.

Detailed ways

As shown in Figure 1-7, a water bladder type bile external drainage tube includes a drainage tube section I1, a drainage tube section II2 and a drainage tube section III3 connected in sequence. The outer wall of the drainage tube section II2 is sleeved with a balloon membrane 4, so The cross-section of the balloon membrane 4 is quincunx-shaped,

The drainage tube section I1 is provided with a pipeline I101 communicating with the drainage tube section II2 and a pipeline II102 communicating with the balloon membrane 4, and the other end of the pipeline II102 is connected to the tube 6 through the cap 5, and the tube 6 The other end is connected with the three-way valve,

Described cap 5 has cylindrical head 501 and truncated conical tail 502, and the small end of described truncated conical tail 502 is fixedly connected with described cylindrical head 501, and described cylindrical head 501 is provided with described pipeline. The outer diameter of II102 matches the through hole I503, and the outer diameter of the pipe II102 and the through hole I503 are clearance fit,

The tube 6 has a truncated conical head 601, the outer surface of the truncated conical head 601 is provided with external threads, the truncated conical tail 502 has a through hole II 504 matching the truncated conical head 601, the The end of the through hole II 504 away from the cylindrical head 501 is provided with an internal thread matching the external thread, and the through hole II 504 is also provided with a smooth part 505, and the smooth part 505 is located between the internal thread and the Between the cylindrical heads 501,

The small end of the frustum-shaped head 601 matches the inner diameter of the pipe II 102, and the small end of the frusto-conical head 601 and the inner diameter of the pipe II 102 are interference fit,

The through hole I503 communicates with the through hole II504,

The outer wall of the drainage pipe section III3 is provided with a side hole 301 .

The end of the drainage tube section III3 away from the drainage tube section II2 is provided with a cap 302 , the cap 302 has an arc surface, and the arc surface is provided with a through hole III 303 through which the guide wire 7 passes.

Both ends of the balloon membrane 4 are respectively connected to the outer wall of the drainage tube section II2 through metal rings 8 .

The metal ring 8 is made of X-ray opaque material. The metal ring 8 is made of X-ray-opaque material for the purpose of positioning during the operation.

The pipe 6 is threadedly connected with the three-way valve.

In the working state, the pipeline II102 passes through the through hole I503, the frustum-shaped head 601 enters the through-hole II504, and the small end of the frustum-shaped head 601 is inserted into the pipeline II102, At this time, the portion of the pipe II 102 located between the frustum-shaped head 601 and the smooth portion 505 is squeezed and deformed so that it is in close contact with the frusto-conical head 601 and the smooth portion 505 Then, the cap 5 and the frustum-shaped head 601 are tightened by cooperating the internal thread and the external thread,

The guide wire 7 is inserted into the bile duct 9, the water bladder external drainage tube for bile is sleeved on the guide wire 7 and pushed to the bile duct 9, and the guide wire 7 passes through the drainage tube segment III3, the The drainage tube section II2 and the pipeline I101, and then withdraw the guide wire 7 from the water bladder type bile external drainage tube, open the three-way valve,

The water passes through the three-way valve in sequence, the tube 6 and the pipeline II 102 enter the balloon membrane 4 and fill it, at this time, the balloon membrane 4 expands outward under the action of water to form a water bag.

The above is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto, any person familiar with the technical field within the technical scope disclosed in the present invention, according to the technical solution of the present invention Any equivalent replacement or change of the inventive concepts thereof shall fall within the protection scope of the present invention.

Claims (6)

1. A water bladder type bile external drainage tube, comprising drainage tube section I, drainage tube section II and drainage tube section III connected in sequence, characterized in that: the outer wall of the drainage tube section II is sleeved with a balloon film, and the balloon The cross-section of the film is quincunx-shaped, The drainage tube section I is provided with a pipeline I communicating with the drainage tube section II and a pipeline II communicating with the balloon membrane. The other end of the pipeline II is connected to the tube through a cap, and the other end of the tube is connected to the tube. Three-way valve connection, The cap has a cylindrical head and a truncated conical tail, the small end of the truncated conical tail is fixedly connected to the cylindrical head, and the cylindrical head is provided with a ring that matches the outer diameter of the pipeline II. through-hole I, The tube has a frustum-shaped head, the outer surface of the frustum-shaped head is provided with external threads, and the frustum-shaped tail has a through hole II matching the frustum-shaped head, and the through hole II is far away from the One end of the cylindrical head is provided with an internal thread matching the external thread, and a smooth part is also provided on the through hole II, and the smooth part is located between the internal thread and the cylindrical head , The small end of the frustum-shaped head matches the inner diameter of the pipeline II, The through hole I communicates with the through hole II, The outer wall of the drainage pipe section III is provided with side holes. 2. A water bladder type bile external drainage tube according to claim 1, characterized in that: the end of the drainage tube section III far away from the drainage tube section II is provided with a cap, and the cap has an arc surface , the arc surface is provided with a through hole III through which the guide wire passes. 3 . The water bladder type bile external drainage tube according to claim 1 , wherein the two ends of the balloon membrane are respectively connected to the outer wall of the drainage tube section II through metal rings. 4 . 4. A water bladder type bile external drainage tube according to claim 3, characterized in that: the metal ring is made of X-ray-opaque material. 5. A water bladder type bile external drainage tube according to claim 1, characterized in that: said tube is threadedly connected to said three-way valve. 6 . The water bladder type bile external drainage tube according to claim 1 , characterized in that: the tube is connected to the three-way valve through a buckle. 6 .