CN213129778U

CN213129778U - Metal support drainage tube for percutaneous transhepatic bile duct puncture

Info

Publication number: CN213129778U
Application number: CN202020428657.9U
Authority: CN
Inventors: 林美举; 张�诚; 宋玲玲
Original assignee: Affiliated Zhongshan Hospital of Dalian University
Current assignee: Affiliated Zhongshan Hospital of Dalian University
Priority date: 2020-03-30
Filing date: 2020-03-30
Publication date: 2021-05-07
Anticipated expiration: 2030-03-30

Abstract

A metal stent drainage tube for percutaneous transhepatic bile duct puncture belongs to the technical field of medical appliance manufacture. The device comprises a drainage tube, an outer sleeve, an inner sleeve, a puncture needle, a drainage tube connector and an application. The drainage tube is divided into a head part and a body part, wherein the head part is a metal bracket woven by titanium alloy wires; the outer sleeve comprises a head part, a body part, a tail part and a connecting wire, wherein the head part is conical, the head end is provided with an opening, and the tail part is provided with a connecting wire through hole; the surface of the tail end of the inner sleeve is provided with threads; the puncture needle is a metal needle, the head end of the puncture needle is provided with a plastic resistance block, the tail end of the puncture needle is provided with a cap-shaped connector, the inner wall of the cap-shaped connector is provided with threads, and the structure is screwed on the tail end of the inner sleeve; the connector comprises an inner core and a cap, the surface of the inner core is provided with threads, the inner wall of the cap is provided with threads, and the cap is screwed on the inner core; the dressing paste is an annular non-woven fabric paste, and a cap-shaped structure is arranged in the middle of the dressing paste. The utility model has the advantages that the utility model can directly puncture into the intrahepatic bile duct, keep somewhere that the metal support supports narrowly, take the narrowness to remove the back and can take out the metal support from the subcutaneous tissue.

Description

Metal support drainage tube for percutaneous transhepatic bile duct puncture

Technical Field

The utility model belongs to the technical field of medical instrument makes, a wicresoft's medical technology and surgical instruments are related to for percutaneous through narrow wicresoft's surgical instruments of hepatobiliary duct puncture treatment benign and malignant extrahepatic bile duct, specifically speaking is a through narrow biliary tract metal support for percutaneous liver puncture.

Background

Extrahepatic bile duct stenosis is a common disease and frequently encountered diseases in clinic, and comprises inflammatory bile duct stenosis, injured bile duct stenosis, bile duct anastomotic stoma stenosis after liver transplantation, malignant bile duct stenosis and the like, wherein the bile duct stenosis can cause the rise of biliary pressure above the stenosis, unsmooth bile excretion, high fever due to chill, jaundice and epigastric pain, and the persistent obstruction can cause cholestatic cirrhosis and liver failure and even endanger the life of a patient.

The treatment for the extrahepatic bile duct stenosis comprises surgical operation, endoscope and interventional treatment, wherein the surgical operation has high risk and the complications are more after the chole-intestinal anastomosis operation; the endoscopic surgery has small wound, needs to cut the papillary sphincter, has complications such as postoperative hemorrhage, acute pancreatitis, reflux cholangitis and the like, and has higher difficulty and failure rate for endoscopic surgery again after upper gastrointestinal stenosis and gastrointestinal surgery. Among the three treatment schemes, the intervention treatment has the minimum trauma, can be completed under local anesthesia, can be used as the first choice precaution, and can also be used as the replacement precaution for the failure of the treatment of surgical operation and endoscopic operation.

The intervention method for treating bile duct stenosis comprises biliary tract external drainage, biliary tract plastic stent implantation or biliary tract metal stent implantation to relieve stenosis and recover bile unobstructed drainage. The biliary tract external drainage tube in the three drainage modes can only relieve jaundice and can not relieve stenosis, and the loss of a large amount of bile can cause anorexia, water, acid, alkali and ion disorder; the biliary tract plastic is implanted secondarily, but the restenosis rate is higher after the stent is taken out; the biliary tract metal stent is used for treating extrahepatic bile duct stenosis, can obtain larger expansion diameter, is generally used for treating malignant extrahepatic bile duct stenosis, and is rarely used for treating benign bile duct stenosis, because the metal stent is difficult to take out through a percutaneous transhepatic puncture route. The endoscope for treating the biliary stricture ensures that the metal stent placed in the biliary tract has longer unobstructed time and lower stricture recurrence rate, and the effect is better than that of a plastic stent.

Disclosure of Invention

The utility model aims to provide a metal bracket drainage tube for treating bile duct stenosis by puncturing the skin through the hepatic bile duct.

The utility model comprises a drainage tube 1, an outer sleeve 2, an inner sleeve 3, a puncture needle 4 and a drainage tube connector 5, wherein the drainage tube 1, the outer sleeve 2 and the inner sleeve 3 are single-channel drainage tubes; wherein the content of the first and second substances,

a. the drainage tube 1 is divided into a head part I7 and a body part I8, wherein the head part I7 is a metal bracket, the body part I8 is a hose, and the wall of the hose is provided with a side hole 10;

b. the outer sleeve 2 comprises a head II 11, a body II 12, a tail I13 and a connecting wire 14, the head II 11 is conical, the pipe wall of the head II 11 is provided with longitudinal continuous side holes 15, the continuous side holes 15 are from the top end of the head II 11 to the bottom end of the head II 11, one end of the connecting wire 14 is connected to the inner side wall of the body II 12, the other end of the connecting wire is led out from the opening at the top end of the head II 11, the connecting wire arranged on the pipe wall at the bottom end of the head II 11 enters the pipe cavity of the body II 12 through a hole and is led out from the tail I13;

c. the inner sleeve 3 is divided into a head part III 16, a body part III 17 and a tail part II 18, the head part III 16 is in a diamond shape, the body part III 17 is a hose, the head part III 16 and the tail part II 18 are hard pipes, the tail end surface of the tail part II 18 is provided with threads, and the drainage pipe 1 is sleeved on the inner sleeve 3;

d. the puncture needle 4 is a metal needle, the head end of the puncture needle is provided with a resistance block 19, the tail end of the puncture needle is provided with a cap-shaped joint 20, and the inner wall of the cap-shaped joint 20 is provided with threads; the puncture needle 4 penetrates through the inner sleeve 3, and the thread arranged on the inner wall of the cap-shaped connector 20 is screwed on the tail end of the inner sleeve 3;

e. the connector 5 comprises an inner core 21 and a cap 22, the surface of the inner core 21 is provided with threads, the upper part of the inner core 21 is a cone 23, the lower part of the inner core 21 is a column 24, the cap 22 is a single-channel tube, the inner wall of the inner core is provided with threads, the cap 22 is sleeved at the tail part of the drainage tube 1, one end of the cone 23 of the inner core 21 is inserted into the drainage tube 1, and the cap 22 is screwed on the column 24 of;

the length of the drainage tube 1 is 100-120 cm; wherein, the metal bracket of the head I7 is 7-14cm long, 4-8cm long after being bounced off and 6-10mm in diameter, and the body I8 has an outer diameter of 8Fr, an inner diameter of 7Fr and a length of 92-116 cm; the head I7 of the drainage tube 1 is a metal bracket woven by titanium alloy wires;

3-5 side holes 10 are arranged on the wall of the I8 tube body of the drainage tube 1;

the length of the outer sleeve 2 is 40-60cm, wherein the head II 11 is 10cm, the external diameter of the top end is 6.5Fr, and the internal diameter is 6 Fr; the body part II 12 and the tail part I13 have an outer diameter of 9 Fr; the inner diameter is 8.5Fr, and the tail I13 is 5-10cm long; the tail I13 of the outer sleeve 2 is a hard plastic pipe;

the length of the inner sleeve 3 is 100-120cm, wherein the maximum outer diameter of the head III 16 is 6.5Fr, and the length of the head III 16 is 1-2 cm; the body part III 17 and the tail part II 18 have the outer diameter of 5.5Fr, the inner diameter of 4.5Fr and the length of 5-10 cm; the head III 16 of the inner sleeve 3 is made of hard plastic; the tail part II 18 is a hard plastic pipe;

the puncture needle 4 is 100-120cm long and has an outer diameter of 4 Fr; the resistance block 19 arranged at the head end of the puncture needle 4 is made of plastic, and the cap-shaped joint 20 arranged at the tail end of the puncture needle is made of hard plastic;

the connector 5 is made of hard plastic, the cap 22 is 0.5cm long, the outer diameter is 16Fr, the inner diameter is 9Fr, the inner core 21 is 0.3cm long, wherein the column 24 is 0.5cm long, the outer diameter of the column 24 is 10Fr, and the outer diameter of the top end of the cone 23 is 7.5 Fr;

a channel 9 is arranged in the inner core 21 of the connector 5, the length of the channel 9 is 1.0cm, and the inner diameter is 6 Fr;

the dressing paste 6 is sleeved on the connector 5, and the dressing paste 6 is pasted on the skin;

the dressing paste 6 is a hat-shaped annular non-woven fabric paste with the diameter of 4-6cm, the inner diameter of a hat-shaped convex part of 10Fr and the depth of 1.5 cm.

The inner core 21 has two types of solid and channel; when bile is drained, the inner core 21 with a channel is used, the cap 22 is sleeved at the tail part of the drainage tube 2, one end of the cone 23 of the inner core 21 is inserted into the drainage tube 1, the cap 22 is screwed on the inner core 22, and the head part of the drainage bag is screwed outside the column 24 of the inner core 21; when bile drainage is not needed, the solid inner core 21 is used, the drainage tube 1 is cut off, 1cm is reserved outside the body, the cap 22 is sleeved on the drainage tube 1, the cone 23 of the inner core 21 is inserted into the lumen of the drainage tube 1, and the cap 22 is screwed on the inner core 21.

The utility model discloses the beneficial effect who reaches is:

1. the utility model can be directly punctured into the expanded bile duct after being assembled;

2. the metal bracket of the utility model can effectively support the stenosis, and the tail part can be connected with the drainage bag or directly seal the drainage tube through the connector;

3. in the utility model, the metal bracket is connected with the outer drainage tube, and the displacement of the metal bracket can be prevented by fixing the outer drainage tube;

4. the utility model provides a metal support links to each other with outer drainage tube, can take out metal support when taking out outer drainage tube.

5. The closed head blocks the guide tube, and the cap-shaped application is pasted outside, so that the infection rate can be reduced.

Drawings

FIG. 1 is a schematic view of the structure of a middle drainage tube of the present invention,

figure 2 is a schematic structural view of the outer sleeve of the utility model,

figure 3 is a structural schematic view of the inner sleeve in the invention,

figure 4 is a schematic structural view of the puncture needle of the utility model,

FIG. 5 is a schematic structural view of the cap of the drainage tube connector of the present invention,

FIG. 6 is a schematic structural view of a solid core of the drainage tube connector of the present invention,

FIG. 7 is a schematic structural view of the inner core with a channel of the drainage tube connector of the present invention,

figure 8 is a schematic structural view of the dressing patch of the present invention,

figure 9 is a schematic view of the invention after assembly,

figure 10 is a schematic view of the present invention percutaneously placed in a bile duct,

figure 11 is a schematic view of the present invention withdrawing the needle and inserting the guide wire,

FIG. 12 is a schematic view of the tie-back line of the present invention tearing open the sidewall of the front section of the outer sleeve,

FIG. 13 is a schematic view showing the complete release of the metal stent on the drainage tube after the outer cannula is withdrawn,

figure 14 is a schematic view of the present invention after withdrawal of the inner cannula and guidewire,

FIG. 15 is a schematic view of the drainage tube body of the present invention cut off from the outside,

figure 16 is a schematic view of the connecting joint of the present invention,

figure 17 is a schematic view of the application of the present invention,

the medical drainage tube comprises a drainage tube 1, an outer sleeve 2, an inner sleeve 3, a puncture needle 4, a drainage tube connector 5, a dressing paste 6, a head I7, a head I8, a body I9, a channel 10, a side hole 11, a head II 12, a body II 13, a tail I14, a connecting wire 15, a continuous side hole 16, a head III 17, a body III 18, a tail II 19, a resistance block 19, a cap-shaped connector 20, an inner core 21, a cap 22, a cone 23, a cylinder 24 and a guide wire 25.

Detailed Description

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

the length of the drainage tube 1 is 120 cm; wherein, the metal bracket of the head I7 is 14cm long, 8cm long after being flicked and 10mm in diameter, the external diameter of the body I8 is 8Fr, the internal diameter is 7Fr and the length is 106 cm; the head I7 of the drainage tube 1 is a metal bracket woven by titanium alloy wires;

5 side holes 10 are arranged on the wall of the I8 body part of the drainage tube 1;

the length of the outer sleeve 2 is 60cm, wherein the head II 11 is 10cm, the external diameter of the top end is 6.5Fr, and the internal diameter is 6 Fr; the body part II 12 and the tail part I13 have an outer diameter of 9 Fr; the inner diameter is 8.5Fr, and the tail part I13 is 10cm long; the tail I13 of the outer sleeve 2 is a hard plastic pipe;

the length of the inner sleeve 3 is 120cm, wherein the maximum outer diameter of the head III 16 is 6.5Fr, and the length of the head III 16 is 2 cm; the body part III 17 and the tail part II 18 have the outer diameter of 5.5Fr, the inner diameter of 4.5Fr and the length of 10 cm; the head III 16 of the inner sleeve 3 is made of hard plastic; the tail part II 18 is a hard plastic pipe;

the puncture needle 4 is 120cm long and has an outer diameter of 4 Fr; the resistance block 19 arranged at the head end of the puncture needle 4 is made of plastic, and the cap-shaped joint 20 arranged at the tail end of the puncture needle is made of hard plastic;

the utility model also comprises a dressing paste 6, the dressing paste 6 is sleeved on the connector 5, and the dressing paste 6 is pasted on the skin;

the dressing paste 6 is a hat-shaped annular non-woven fabric paste with the diameter of 6cm, the inner diameter of a hat-shaped convex part of 10Fr and the depth of 1.5 cm.

1. Direct bile duct puncture:

after the device is assembled, the device is punctured into a bile duct under the ultrasonic or X-ray monitoring, a puncture needle 4 is withdrawn, a contrast medium is injected into an inner casing 3 to completely display an extrahepatic bile duct and a narrow part, a guide wire 25 is arranged into the narrow far-end bile duct or duodenum through the inner casing 3, the device is enabled to cross the narrow part under the guide of the guide wire 25, the position of a first 7 metal support at the head part of a drainage tube 1 is adjusted under the X-ray perspective, the drainage tube 1 is fixed, a connecting wire 14 is pulled back to tear the side wall of a second 11 head part of an outer casing 2, the outer casing 2 is withdrawn, the metal support is released, the outer drainage tube 1 is fixed and the inner casing 3 is withdrawn, the drainage tube 1 is fixed on the abdominal wall beside the puncture point by suturing, the drainage tube.

2. Percutaneous transhepatic bile duct puncture posterior straight tube:

under the monitoring of ultrasound or X-ray, the original percutaneous transhepatic bile duct puncture drainage tube is inserted into a guide wire 25, the guide wire 25 is reserved and the original drainage tube is withdrawn, a puncture needle 4 in the assembled device is withdrawn, the device is enabled to cross stenosis under the guide of the guide wire 25, the position of a first 7 metal bracket at the head part of the drainage tube 1 is adjusted under the perspective of the X-ray, the drainage tube 1 is fixed, a connecting wire 14 is pulled back to enable the side wall of a second 11 head part of an outer sleeve 2 to be torn, the outer sleeve 2 is withdrawn, the metal bracket is released, the outer drainage tube 1 is fixed and withdrawn from an inner sleeve 3, the drainage tube 1 is fixed on the abdominal wall beside the puncture point by sewing, the drainage tube 1 is cut off, 1.

Claims

1. A metal stent drainage tube for percutaneous transhepatic cholangial puncture is characterized by comprising a drainage tube (1), an outer sleeve (2), an inner sleeve (3), a puncture needle (4) and a drainage tube connector (5), wherein the drainage tube (1), the outer sleeve (2) and the inner sleeve (3) are single-channel drainage tubes; wherein the content of the first and second substances,

a. the drainage tube (1) is divided into a head part I (7) and a body part I (8), wherein the head part I (7) is a metal bracket, the body part I (8) is a hose, and the wall of the hose is provided with a side hole (10);

b. the outer sleeve (2) comprises a head II (11), a body II (12), a tail I (13) and a connecting wire (14), the head II (11) is conical, a longitudinal continuous side hole (15) is formed in the tube wall of the head II (11), the continuous side hole (15) is from the top end of the head II (11) to the bottom end of the head II (11), one end of the connecting wire (14) is connected to the inner side wall of the body II (12), the other end of the connecting wire is led out from the top end opening of the head II (11), the connecting wire is led into the tube cavity of the body II (12) through a connecting wire hole formed in the tube wall at the bottom end of the head II (11) and led out from the tail I (13), the tail I (13) is a;

c. the inner sleeve (3) is divided into a head part III (16), a body part III (17) and a tail part II (18), the head part III (16) is in a diamond shape, the body part III (17) is a hose, the head part III (16) and the tail part II (18) are hard pipes, the tail end surface of the tail part II (18) is provided with threads, and the drainage tube (1) is sleeved on the inner sleeve (3);

d. the puncture needle (4) is a metal needle, the head end of the puncture needle is provided with a resistance block (19), the tail end of the puncture needle is provided with a cap-shaped joint (20), and the inner wall of the cap-shaped joint (20) is provided with threads; the puncture needle (4) penetrates through the inner sleeve (3), and the thread arranged on the inner wall of the cap-shaped joint (20) is screwed on the tail end of the inner sleeve (3);

e. connector (5) are including inner core (21) and cap (22), and inner core (21) surface is equipped with the screw thread, and inner core (21) upper portion is cone (23), and the lower part is cylinder (24), and cap (22) are the single channel pipe, and the inner wall is equipped with the screw thread, and cap (22) cover is in drainage tube (1) afterbody, inserts drainage tube (1) with cone (23) one end of inner core (21) in, cap (22) are revolved on cylinder (24) of inner core (21).

2. The metal stent drainage tube for percutaneous transhepatic cholangial puncture according to claim 1, wherein the drainage tube (1) is 100-120cm long; wherein, the length of the metal bracket of the head part I (7) is 7-14cm, the length after the metal bracket is bounced off is 4-8cm, the diameter is 6-10mm, the outer diameter of the body part I (8) is 8Fr, the inner diameter is 7Fr, and the length is 92-116 cm.

3. The metal stent drainage tube for the percutaneous transhepatic bile duct puncture according to the claim 1 or 2, characterized in that the number of the side holes (10) arranged on the tube wall of the body I (8) of the drainage tube (1) is 3-5.

4. The metal stent drainage tube for percutaneous transhepatic bile duct puncture according to claim 1, wherein the length of the outer cannula (2) is 40-60cm, wherein the length of the head II (11) is 10cm, the external diameter of the top end is 6.5Fr, and the internal diameter is 6 Fr; the body part II (12) and the tail part I (13) have an outer diameter of 9 Fr; the inner diameter is 8.5Fr, and the tail I (13) is 5-10cm long.

5. The metal stent drainage tube for percutaneous transhepatic cholangial puncture according to claim 1, wherein the length of the inner sleeve (3) is 100-120cm, wherein the maximum outer diameter of the head III (16) is 6.5Fr, and the length of the head III (16) is 1-2 cm; the body part III (17) and the tail part II (18) have the outer diameter of 5.5Fr and the inner diameter of 4.5Fr, and the tail part II (18) is 5-10cm long.

6. The metal stent drainage tube for percutaneous transhepatic cholangial puncture according to claim 1, wherein the puncture needle (4) has a length of 100-120cm and an outer diameter of 4 Fr.

7. The metal stent drainage tube for percutaneous transhepatic cholangial puncture according to claim 1, wherein in the connector (5), the cap (22) is 0.5cm long, the outer diameter is 16Fr, the inner diameter is 9Fr, the inner core (21) is 0.3cm long, wherein the cylinder (24) is 0.5cm long, the outer diameter of the cylinder (24) is 10Fr, and the outer diameter of the top end of the cone (23) is 7.5 Fr.

8. The metal stent drainage tube for the percutaneous transhepatic bile duct puncture according to the claim 1 or 7, wherein the inner core (21) of the connector (5) is internally provided with a channel (9), the channel (9) has a length of 1.0cm and an inner diameter of 6 Fr.

9. The metal stent drainage tube for the percutaneous transhepatic cholangial puncture according to claim 1 or 7, further comprising a dressing patch (6), wherein the dressing patch (6) is sleeved on the connector (5), and the dressing patch (6) is attached to the skin.

10. The metal stent drainage tube for percutaneous transhepatic bile duct puncture according to claim 9, wherein the dressing plaster (6) is a cap-shaped ring plaster with a diameter of 4-6cm, an inner diameter of a cap-shaped convex part of 10Fr and a depth of 1.5 cm.