Multifunctional biliary tract drainage tube with double-cavity balloon assisted expansion through PTCD path

Abstract

The utility model relates to the technical field of medical instruments, in particular to a multifunctional biliary tract drainage tube with double-cavity sacculus auxiliary expansion through a PTCD (percutaneous transluminal compact disc) way, which comprises a drainage tube, a sacculus expansion tube group, a water injection tube and a sacculus, the fixing shell set comprises a drainage tube fixing shell and a water injection tube fixing shell arranged on the periphery of the drainage tube fixing shell, the drainage tube fixing shell is connected with the drainage tube, and the water injection tube fixing shell is connected with the water injection tube; the internal and external intercommunication window is communicated with a first area on the drainage tube and a second area, corresponding to each other, on the water injection tube, so that bile outside the water injection tube flows into the drainage tube through the internal and external intercommunication window. The multifunctional biliary tract drainage tube for assisting expansion through the PTCD way double-cavity balloon integrates biliary tract expansion and bile drainage, operation is reduced, and operation cost can be greatly reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of medical devices, in particular to a multifunctional biliary drainage tube with double-lumen balloon-assisted dilation through the PTCD approach. Background Art

[0002] At present, common bile duct obstruction refers to a disease of the biliary system caused by factors such as bile duct stones, tumors, and inflammation, which lead to the obstruction of bile flow. For such diseases, stent implantation is mostly used to dilate the obstructive segment and drain bile with a biliary drainage tube.

[0003] The purpose of stent implantation is to drain bile into the intestine. However, stents are mostly foreign bodies and cannot be removed once released. When a patient undergoes an upper abdominal CT, artifacts are easily generated. On the other hand, existing drainage stents cannot simultaneously dilate the bile duct and drain bile. Content of the Utility Model

[0004] The purpose of the utility model is to solve the deficiencies in the prior art, and provide a multifunctional biliary drainage tube with double-lumen balloon-assisted dilation through the PTCD approach, including:

[0005] A drainage tube,

[0006] A balloon dilatation tube group sleeved on the periphery of the drainage tube, including a water injection tube and a balloon connected to each other;

[0007] A fixed shell group, including a drainage tube fixed shell and a water injection tube fixed shell arranged on the periphery of the drainage tube fixed shell. The drainage tube fixed shell is connected to the drainage tube, and the water injection tube fixed shell is connected to the water injection tube;

[0008] An internal and external communication window, which connects a first area on the drainage tube and a corresponding second area on the water injection tube, so that bile outside the water injection tube flows into the drainage tube through the internal and external communication window.

[0009] Further, the drainage tube includes a head connected to the drainage tube fixed shell, a middle part for drainage, and a tail for releasing bile;

[0010] The tail of the drainage tube is in a coiled pig-tail style, and a plurality of first through holes for releasing bile are arranged on the tail of the drainage tube.

[0011] Further, one end of the balloon that is not connected to the water injection tube is fixedly connected to the drainage tube.

[0012] Further, there is a sandwich layer between the shells of the drainage tube fixed shell and the water injection tube fixed shell;

[0013] The outer port of the drainage tube fixing shell extends outward and is fixedly connected to the outer port of the water injection tube fixing shell. Among them, the end of the drainage tube fixing shell that is not connected to the drainage tube is the outer port, and the end of the water injection tube fixing shell that is not connected to the water injection tube is the outer port;

[0014] The water injection tube fixing shell is provided with a water injection guide port for facilitating water injection.

[0015] Further, two second through holes are symmetrically arranged on the water injection tube. A third through hole is arranged at a position corresponding to the middle part of the drainage tube. The second through hole and the third through hole are of the same size, and the aperture size of the second through hole is smaller than the pipe diameter of the drainage tube;

[0016] The edge of the water injection tube connected to the second through hole is the second area, and the edge of the drainage tube connected to the third through hole is the first area. The second area and the first area are pressed and sealed, and the second through hole and the third through hole are fitted to form an internal and external communication window.

[0017] Further, a bile drainage passage is formed among the outside of the water injection tube, the internal and external communication window, the middle part of the drainage tube, the tail part of the drainage tube, and the first through hole;

[0018] A balloon expansion or contraction passage is formed among the water injection guide port, the water injection tube fixing shell, the water injection tube, and the balloon.

[0019] Compared with the prior art, the beneficial effects of the present utility model are:

[0020] 1. After the multifunctional biliary drainage tube with double - chamber balloon - assisted dilation through the PTCD approach of the present utility model is disposed in the biliary tract, normal saline is injected through the side water injection guide port, and the balloon is filled through the water injection tube, so that the balloon closely fits the biliary tract, forming a continuous dilation effect on the stenotic biliary tract. After the treatment is completed, the water in the balloon can be extracted to make it shrink, and it can be removed from the body together with the drainage tube, solving the problem that the existing implanted stent cannot be removed after contacting the obstruction.

[0021] 2. The multifunctional biliary drainage tube with double - chamber balloon - assisted dilation through the PTCD approach of the present utility model is provided with an internal and external communication window, which can introduce the bile in the biliary tract into the drainage tube and then release it through the first through hole at the tail part, integrating the functions of dilating the biliary tract and draining bile, reducing the surgical operation, and greatly reducing the surgical cost. Description of the Drawings

[0022] The drawings are used to provide a further understanding of the present utility model, and constitute a part of the specification. They are used together with the embodiments of the present utility model to explain the present utility model, and do not constitute a limitation to the present utility model. In the drawings:

[0023] Figure 1 Structural schematic diagram of a multifunctional biliary drainage tube with double-lumen balloon-assisted dilation via the PTCD approach according to the present utility model;

[0024] Figure 2 Cross-sectional view taken along line A-A of a multifunctional biliary drainage tube with double-lumen balloon-assisted dilation via the PTCD approach according to the present utility model;

[0025] Figure 3 Schematic diagram of the crimping area of a multifunctional biliary drainage tube with double-lumen balloon-assisted dilation via the PTCD approach according to the present utility model;

[0026] Figure 4 Schematic diagram of the crimping of a multifunctional biliary drainage tube with double-lumen balloon-assisted dilation via the PTCD approach according to the present utility model.

[0027] Reference numerals

[0028] 1: Drainage tube;

[0029] 11: First through-hole;

[0030] 2: Balloon dilation tube group;

[0031] 21: Water injection tube; 22: Balloon;

[0032] 3: Fixed housing group;

[0033] 31: Drainage tube fixed housing; 32: Water injection tube fixed housing;

[0034] 321: Water injection guide port;

[0035] 4: Inner and outer communication window;

[0036] 41: Crimping area;

[0037] 51: Second through-hole; 52: Third through-hole;

[0038] 61: First region; 62: Second region. Detailed implementation manners

[0039] In order to make the objectives, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners. It should be understood that the specific implementation manners described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0040] Example 1

[0041] Please refer to Figures 1-4 , the technical solution of a multifunctional biliary drainage tube with double-lumen balloon-assisted dilation via the PTCD approach provided in this example is as follows:

[0042] Drainage tube 1,

[0043] The balloon dilation tube set 2 is sleeved on the periphery of the drainage tube 1 and includes a water injection tube 21 and a balloon 22 which are connected to each other;

[0044] The fixing shell set 3 includes a drainage tube fixing shell 31 and a water injection tube fixing shell 32 arranged on the periphery of the drainage tube fixing shell 31. The drainage tube fixing shell 31 is connected to the drainage tube 1, and the water injection tube fixing shell 32 is connected to the water injection tube 21;

[0045] The internal and external communication window 4 connects the first area 61 on the drainage tube 1 and the corresponding second area 62 on the water injection tube 21, so that the bile outside the water injection tube 21 flows into the drainage tube 1 through the internal and external communication window 4.

[0046] Specifically, the drainage tube 1 includes a head connected to the drainage tube fixing shell 31, a middle part for drainage, and a tail part for releasing bile;

[0047] The tail of the drainage tube 1 is in a coiled pig-tail style, and a plurality of first through holes 11 for releasing bile are arranged on the tail of the drainage tube 1.

[0048] In a specific implementation, first configure the non-water-injected device in the biliary tract, so that the balloon 22 is configured at the biliary stricture, and the tail of the drainage tube 1 is configured in the intestine, and inject 10 mml of normal saline to fill the balloon 22, so that the balloon 22 continuously expands at the biliary stricture.

[0049] Specifically, one end of the balloon 22 that is not connected to the water injection tube 21 (hereinafter referred to as the sealed end) is fixedly connected to the drainage tube 1.

[0050] In a specific implementation, there are various ways to seal and fix the balloon 22. On the one hand, an extra area of the same material can be set at the sealed end of the balloon 22. This extra area can be understood as having water injection tubes 21 arranged at both ends of the balloon 22. The left side is the water injection tube 21 for water injection, and the right side is a short water injection tube 21 (i.e., the extra area). Press and seal the extra area with the drainage tube 1 to achieve the sealing of the balloon 22 and ensure that the balloon 22 can expand and does not leak water.

[0051] Preferably, in the same way as the above method, the extra area can also be folded into the interior of the balloon 22 and then the extra area and the drainage tube 1 are sealed by pressing or other bonding methods;

[0052] Preferably, in some embodiments, the entire balloon 22 expansion tube set 2 itself can also be configured as a double-tube structure. The interlayer between the outer tube and the inner tube serves as a water injection passage, and water is directly injected into the annular balloon 22. A new double-chamber structure can be formed by pressing the inner tube and the drainage tube 1 passing through the inner tube together.

[0053] Specifically, there is an interlayer between the shells of the drainage tube fixing shell 31 and the water injection tube fixing shell 32;

[0054] The outer port of the drainage tube fixing shell 31 extends outward and is fixedly connected to the outer port of the water injection tube fixing shell 32. Here, the end of the drainage tube fixing shell 31 that does not connect to the drainage tube 1 is the outer port, and the end of the water injection tube fixing shell 32 that does not connect to the water injection tube 21 is the outer port;

[0055] The water injection tube fixing shell 32 is provided with a water injection guide port 321 for facilitating water injection.

[0056] Specifically, as Figure 4 shown, two second through holes 51 are symmetrically provided on the water injection tube 21. A third through hole 52 is provided at a position corresponding to the middle of the drainage tube 1. The second through hole 51 and the third through hole 52 are of the same size, and the aperture size of the second through hole 51 is smaller than the pipe diameter size of the drainage tube 1;

[0057] The edge of the water injection tube 21 connected to the second through hole 51 is the second region 62, and the edge of the drainage tube 1 connected to the third through hole 52 is the first region 61. The second region 62 and the first region 61 are pressed and sealed to form a pressing zone 41 (as Figure 3 shown), and the second through hole 51 and the third through hole 52 are fitted to form an internal and external communication window 4.

[0058] In a specific implementation, as Figure 2 shown, because the second through hole 51 and the third through hole 52 are of the same size, and the aperture size of the second through hole 51 is much smaller than the pipe diameter size of the drainage tube 1; therefore, the drainage tube 1 and the water injection tube 21 are still connected.

[0059] Specifically, a bile drainage passage is formed between the outer side of the water injection tube 21, the internal and external communication window 4, the middle of the drainage tube 1, the tail of the drainage tube 1, and the first through hole 11;

[0060] A balloon 22 expansion or contraction passage is formed between the water injection guide port 321, the water injection tube fixing shell 32, the water injection tube 21, and the balloon 22.

[0061] Finally, it should be noted that the above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A multifunctional bile duct drainage tube with double-lumen balloon-assisted dilatation via PTCD, characterized in that: include: Drainage tube, A balloon dilatation tube set, which is sleeved on the outer periphery of the drainage tube and includes a water injection tube and a balloon connected to each other; A fixed shell assembly, comprising a drainage pipe fixed shell and a water injection pipe fixed shell arranged at the periphery of the drainage pipe fixed shell, the drainage pipe fixed shell being connected to the drainage pipe, and the water injection pipe fixed shell being connected to the water injection pipe; The inside-outside communication window connects the first area on the drainage tube and the second area corresponding to each other on the water injection tube, so that the bile outside the water injection tube flows into the drainage tube through the inside-outside communication window.

2. The multifunctional bile duct drainage tube with double-lumen balloon-assisted dilatation via PTCD according to claim 1, characterized in that: The drainage tube comprises a head portion connected to the drainage tube fixing shell, a middle portion for drainage and a tail portion for releasing bile; The tail of the drainage tube is in a coiled pigtail style, and is provided with a plurality of first through holes for releasing bile.

3. The multifunctional bile duct drainage tube with double-lumen balloon-assisted dilatation via PTCD according to claim 1, characterized in that: The end of the balloon not connected to the water injection tube is fixedly connected to the drainage tube.

4. The multifunctional bile duct drainage tube with double-lumen balloon-assisted dilatation via PTCD according to claim 2, characterized in that: There is an interlayer between the housings of the drainage pipe fixing shell and the water injection pipe fixing shell; The outer port of the drainage pipe fixing shell extends outward and is fixedly connected to the outer port of the water injection pipe fixing shell, wherein the end of the drainage pipe fixing shell not connected to the drainage pipe is the outer port, and the end of the water injection pipe fixing shell not connected to the water injection pipe is the outer port; The water injection pipe fixing shell is provided with a water injection guide port for facilitating water injection.

5. The multifunctional bile duct drainage tube with double-lumen balloon-assisted dilatation via PTCD according to claim 2, characterized in that: The water injection pipe is symmetrically provided with two second through holes, the middle of the drainage pipe is provided with a third through hole at a position corresponding to the second through hole, the second through hole is equal in size to the third through hole, and the aperture of the second through hole is smaller than the diameter of the drainage pipe; The edge where the water injection pipe connects to the second through hole is the second area, the edge where the drainage pipe connects to the third through hole is the first area, the second area is pressed and sealed with the first area, and the second through hole and the third through hole are fitted to form an inside-outside communicating window.

6. The multifunctional bile duct drainage tube with double-lumen balloon-assisted dilatation via PTCD according to claim 4, characterized in that: A bile drainage passage is formed between the outer side of the water injection pipe, the inner and outer communicating window, the middle part of the drainage pipe, the tail part of the drainage pipe and the first through hole; A balloon expansion or contraction passage is formed between the water injection port, the water injection pipe fixing shell, the water injection pipe and the balloon.

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