CN111420233A

CN111420233A - Fistulous tract step-by-step expansion type drainage tube with balloon

Info

Publication number: CN111420233A
Application number: CN202010194539.0A
Authority: CN
Inventors: 宋玲玲; 张�诚
Original assignee: Affiliated Zhongshan Hospital of Dalian University
Current assignee: Affiliated Zhongshan Hospital of Dalian University
Priority date: 2020-03-19
Filing date: 2020-03-19
Publication date: 2020-07-17

Abstract

A fistulous tract gradual expansion type drainage tube with a balloon belongs to the technical field of medical instrument manufacturing. The invention comprises a drainage tube and an inner core, wherein the head part of a drainage tube head is conical, the drainage tube head is provided with a spherical air bag and a cylindrical air bag with variable outer diameter, and the tail part of a water injection channel arranged in the drainage tube head is provided with a connector; a side hole is arranged on the pipe wall between the spherical air bag and the cylindrical air bag; the surface of the connector at the tail part of the drainage tube is provided with threads, the tail part of the inner core is provided with a connecting cap, the threads are arranged in the connecting cap and are matched with the threads on the surface of the tail part structure of the drainage tube, the inner core is arranged in the drainage tube, and the connector at the tail part is screwed tightly. The fistula catheter has the beneficial effects that the balloon is arranged at the head end of the fistula catheter, so that the displacement of the drainage tube is avoided, the cylindrical balloon is arranged at the body part of the fistula catheter, the fistula tract is gradually dilated in a gradual pressurizing mode, and the side effects of tearing and bleeding of the fistula tract, pain and the like are avoided.

Description

Fistulous tract step-by-step expansion type drainage tube with balloon

Technical Field

The invention belongs to the technical field of medical instrument manufacturing, and relates to a fistulous tract step-by-step expansion type drainage tube with a balloon.

Background

Calculus of gallbladder and intrahepatic and extrahepatic bile ducts is a common disease and can induce complications such as acute and chronic cholecystitis, cholangitis, obstructive jaundice, biliary tumors and the like. The traditional treatment modes of gallstones are abdominal cholecystectomy and liver lobe resection, and the laparoscopic and choledochoscope technology is increasingly developed nowadays, and the cholecystotomy and the biliary tract exploration lithotomy under the laparoscope become important means for treating the gallstones.

No matter the cholecystotomy is performed under a laparoscope, the biliary tract exploration calculus extraction needs to be performed under general anesthesia. For the elderly and high-risk patients who can not tolerate the general anesthesia risk and the patients who receive a plurality of laparotomy operations, percutaneous transhepatic cholecystectomy and bile duct puncture drainage can be adopted firstly, then the fistula tract is gradually expanded, and when the fistula tract is expanded to more than 16Fr, a choledochoscope can be placed through the fistula tract to enter the gallbladder and lithotript in the duct. Fistulous tract expansion comprises two modes, wherein one mode is that different types of hard expansion tubes are used for expanding the fistulous tract in one operation, but the mode still needs to be completed under the general anesthesia state, complications such as bleeding, liver abscess and gallbladder leakage easily occur, the other mode is that a biliary tract drainage tube with a thicker type is replaced discontinuously, anesthesia is not needed in the mode, but the interval between two operations is longer, so that the disease treatment time is longer. If the interval time is shorter or a drainage tube with a thicker model is selected, the pain of the patient is increased, and the difficulty of tube placement is also increased.

Disclosure of Invention

The invention aims to provide a fistulous tract step-by-step expansion type drainage tube with a balloon, which has the advantages of variable maximum expansion diameter of the column-shaped balloon, no need of anesthesia, small injury, few complications and simple operation.

The drainage tube comprises a drainage tube 1 and an inner core 2, wherein the tail part of the drainage tube 1 and the tail part of the inner core 2 are connected with the outer surface of a tail joint of the drainage tube 1, and external threads 3 are arranged on the outer surface of the tail joint; the tail part of the inner core 2 is provided with a connecting cap 5, and the inner surface of the connecting cap 5 is provided with an internal thread 4; the external thread 3 is matched with the internal thread 4, the inner core 2 is arranged in the drainage tube 1, and the external thread 3 and the internal thread 4 of the tail joint are screwed tightly; a spherical air bag 11 is arranged on the drainage tube 1, a water injection channel 6 is arranged in the spherical air bag 11 and is connected with a connector 8 arranged at the tail part of the drainage tube 1; a columnar air bag 12 is arranged on the drainage tube 1, a water injection channel 7 is arranged in the columnar air bag 12 and is connected with a connector 9 arranged at the tail part of the drainage tube 1; a side hole 10 is arranged on the pipe wall between the spherical air bag 11 and the cylindrical air bag 12;

the head of the drainage tube head 1 is conical;

the length of the drainage tube 1 is 60-100cm, the outer diameter is 7Fr, and the inner diameter is 5 Fr;

the length of the inner core 2 is 60-100cm, the outer diameter is 4.5Fr, and the inner diameter is 3.5 Fr;

the diameter of the spherical saccule 11 is 0.6-2 cm;

the outer diameters of the cylindrical air bags 12 are respectively in the range of 8-11Fr, 12-15Fr and 16-19 Fr;

the tube wall of the drainage tube 1 is provided with 1-10 side holes 10;

the tube wall of the drainage tube 1 is provided with 5 side holes 10;

the upper part of the inner core 2 is provided with a non-slip mat 13.

The invention has the advantages that:

1. the balloon type of the device is complete, but the type of the drainage tube is 7Fr, so the device is easy to be placed in a fistula tract;

2. the saccule is arranged at the head end of the device, so that the displacement of the drainage tube is avoided;

3. this device somatic part sets up the cylindricality gasbag, takes the mode of pressurizeing gradually to expand the fistula gradually and says, can not cause the fistula to say the laceration hemorrhage, and side reaction such as pain is littleer.

4. The maximum expansion diameter of each column-shaped air sac expansion saccule is variable, and the times of replacing the drainage tube can be reduced. The fistula tract has less side effects such as lacerated bleeding and pain.

Drawings

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

FIG. 2 is a schematic view of an inner core of the present invention;

FIG. 3 is a schematic view of the invention after assembly;

FIG. 4 is a schematic view of an inflated head balloon of the present invention;

FIG. 5 is a schematic view of the inflated expanded cylindrical balloon of the present invention;

fig. 6 is a schematic view of the placement of the present invention to a desired location to expand a fistula tract.

The drainage tube comprises a drainage tube 1, an inner core 2, an outer thread 3, an inner thread 4, a connecting cap 5, a water injection channel 6, a water injection channel 7, a joint 8, a joint 9, a side hole 10, a spherical air bag 11, a cylindrical air bag 12, an anti-skid pad 13, a section A and a section B.

Detailed Description

The invention is further described with reference to the following figures and detailed description.

The invention comprises a drainage tube 1 and an inner core 2; the upper part of the inner core 2 is provided with an anti-skid pad 13; the outer surface of the connector at the tail part of the drainage tube 1 is provided with an external thread 3; the tail part of the inner core 2 is provided with a connecting cap 5, and the inner surface of the connecting cap 5 is provided with an internal thread 4; the external thread 3 is matched with the internal thread 4, the inner core 2 is arranged in the drainage tube 1, the external thread 3 and the internal thread 4 of the tail joint are screwed, and the tail part of the drainage tube 1 is connected with the tail part of the inner core 2; the head of the drainage tube head 1 is conical; the length of the drainage tube 1 is 90cm, the outer diameter is 7Fr, and the inner diameter is 5 Fr; the inner core 2 is 90cm long, the outer diameter is 4.5Fr, and the inner diameter is 3.5 Fr; a spherical air bag 11 is arranged on the drainage tube 1, a water injection channel 6 is arranged in the spherical air bag 11 and is connected with a connector 8 arranged at the tail part of the drainage tube 1; the diameter of the spherical balloon 11 is 1.5 cm; a columnar air bag 12 is arranged on the drainage tube 1, a water injection channel 7 is arranged in the columnar air bag 12 and is connected with a connector 9 arranged at the tail part of the drainage tube 1; the outer diameter of the cylindrical air bag 12 is changed within the range of 12-15 Fr; 5 side holes 10 are arranged on the wall of the drainage tube 1 between the spherical air sac 11 and the cylindrical air sac 12.

The section A above is a tube sac or bile duct, the abdominal wall and liver parenchyma are arranged between the section A and the section B, and the section B is skin.

The method comprises the steps of placing a guide wire through an original drainage tube under ultrasonic or X-ray monitoring, reserving the guide wire, withdrawing the original drainage tube, placing an inner core 2 into the drainage tube 1, screwing a tail joint, placing the device under the guidance of the guide wire, placing the device into a preset position of a bile duct, injecting physiological saline containing a contrast agent into a joint 8, enabling the size of a spherical air bag 11 to be consistent with the diameter of the wall of the bile duct, preventing the drainage tube from moving, withdrawing the inner core 2, intermittently injecting the physiological saline containing the contrast agent into the joint 9 by using a pressure pump, gradually filling a cylindrical air bag 12, slowly expanding a fistula tract, and connecting the tail of the drainage tube 1 with a drainage bag to drain bile.

Claims

1. The fistulous tract gradual-expansion drainage tube with the balloon comprises a drainage tube (1) and is characterized by further comprising an inner core (2), wherein external threads (3) are arranged on the outer surface of a tail joint of the drainage tube (1); the tail part of the inner core (2) is provided with a connecting cap (5), and the inner surface of the connecting cap (5) is provided with an internal thread (4); the external thread (3) is connected with the internal thread (4); a spherical air bag (11) is arranged on the drainage tube (1), a water injection channel (6) is arranged in the spherical air bag (11) and is connected with a connector (8) arranged at the tail part of the drainage tube (1); a columnar air bag (12) is arranged on the drainage tube (1), and a water injection channel (7) is arranged in the columnar air bag (12) and is connected with a connector (9) arranged at the tail part of the drainage tube (1).

2. The fistulous tract step-by-step dilatation catheter with balloon according to claim 1, wherein the length of the catheter (1) is 60-100cm, the outer diameter is 7Fr and the inner diameter is 5 Fr; the inner core (2) has a length of 60-100cm, an outer diameter of 4.5Fr and an inner diameter of 3.5 Fr.

3. The balloon-based fistula tract step-wise dilatation catheter of claim 1 wherein the spherical balloon (11) has a diameter of 0.6-2 cm.

4. The balloon-based fistula tract step-wise dilatation catheter of claim 1 wherein the cylindrical balloon (12) has an outer diameter of 8-11 Fr.

5. A balloon-based fistula progressive dilatation catheter according to claims 1, 3 or 4 wherein the side holes (10) are provided in the wall between the spherical balloon (11) and the cylindrical balloon (12).

6. The fistula step-by-step dilatation catheter with balloon according to claim 1, 3, 4 or 5 characterized in that there are 1-10 side holes (10) on the wall of the catheter (1).

7. The fistula step-by-step dilatation catheter with balloon according to claims 1, 3, 4, 5 or 6 characterized in that there are 5 side holes (10) on the wall of the catheter (1).

8. The fistulous tract step-by-step dilatation catheter with balloon according to claim 1 characterized in that the upper part of the inner core (2) is provided with a non-slip pad (13).

9. The balloon-based fistula tract step-wise dilatation catheter of claim 1 wherein the cylindrical balloon (12) has an outer diameter of 12-15 Fr.

10. The balloon-based fistula tract step-wise dilatation catheter of claim 1 wherein the cylindrical balloon (12) has an outer diameter of 16-19 Fr.