Continuous graded expansion drainage catheter

Abstract

The utility model provides a continuous graded expansion drainage catheter which comprises a main catheter, a first cavity channel and a second cavity channel are formed in the main catheter, a balloon is arranged on the surface of one end of the main catheter, a first connecting pipe and a second connecting pipe are installed on the two sides of the other end of the main catheter respectively, and the first connecting pipe is communicated with the first cavity channel. The second connecting pipe is communicated with the second cavity channel, an adjusting valve is installed on the surface of the first connecting pipe, drainage holes communicated with the through cavity are formed in the positions, located on the two sides of the balloon, of the main catheter, air is injected into the balloon in a segmented mode, the balloon is made to expand continuously, and then graded continuous expansion can be conducted on the narrow section in the mode. The restenosis time is effectively prolonged, the conditions of liver resection, liver transplantation and the like caused by complications are reduced, a guide wire can conveniently penetrate through the through cavity, then surgical operation can be conducted on a patient in the mode, and bile can be drained through the drainage hole in the restenosis process.

Description

Technical Field

[0001] This utility model belongs to the field of medical auxiliary equipment technology, specifically relating to a continuous graded dilation drainage catheter. Background Technology

[0002] Currently, intrahepatic and extrahepatic bile duct stenosis is highly prevalent. After choledochoenterostomy, the complication rate of choledochoenterostomy stenosis is high. Since the digestive tract has been reconstructed, endoscopic treatment is difficult and has many complications. Percutaneous transhepatic puncture is required to resolve acute biliary obstruction and continuously dilate the drainage tube in stages. This can not only ensure unobstructed bile drainage but also continuously dilate the stenotic segment (such as the choledochoenterostomy site and intrahepatic and extrahepatic bile duct stenosis). However, current technology cannot complete all of the above operations simultaneously with a single tube, and adding an extra tube will cause more pain to the patient. Therefore, we propose a catheter that can perform continuous dilation and drainage at the same time. Utility Model Content

[0003] The purpose of this invention is to provide a continuous graded dilation drainage catheter, which aims to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a continuous graded dilation drainage catheter, comprising a main tube, wherein a through-cavity for guide wire passage and bile drainage is provided in the middle of the main tube, a first cavity and a second cavity are provided inside the main tube, a balloon is provided on the surface of one end of the main tube, and a first connecting tube and a second connecting tube are respectively installed on both sides of the other end of the main tube, the first connecting tube communicating with the first cavity, the second connecting tube communicating with the second cavity, a regulating valve is installed on the surface of the first connecting tube, a pressure monitoring alarm device is installed at the end of the second connecting tube, and drainage holes communicating with the through-cavity are provided on both sides of the balloon on the surface of the main tube, the balloon communicating with the first cavity and the second cavity.

[0005] As a preferred technical solution of this utility model, the regulating valve includes a valve tube connected to a first connecting pipe, a valve core rotatably connected inside the valve tube, the rotating shaft of the valve core extending to the outside of the valve tube and fixedly connected to a rotating plate, a through hole being opened in the middle of the valve core, an arc-shaped groove being opened on the surface of the rotating plate, a first groove and a second groove being opened at both ends of the arc-shaped groove, and an adjusting rod being fixedly connected to the surface of the valve tube.

[0006] As a preferred technical solution of this utility model, when the adjusting rod is vertically located in the first groove, the through hole of the valve core is connected to the valve tube, and when the adjusting rod is vertically located in the second groove, the valve core blocks the valve tube.

[0007] As a preferred embodiment of this invention, the size of the through cavity is 0.35mm-0.45mm, and the expansion size of the balloon is 4mm-12mm.

[0008] As a preferred technical solution of this utility model, the end of the main tube near the balloon is provided with an arc end.

[0009] Compared with the prior art, the beneficial effects of this utility model are as follows: After the catheter is placed in the patient's body, air is injected through the first connecting tube. The air enters the balloon through the first cavity, causing the balloon to inflate. The balloon inflation can fix the catheter on the one hand, and dilate the narrowed segment on the other hand. By injecting air into the balloon in stages, the balloon continuously inflates, thereby enabling graded and continuous dilation of the narrowed segment, effectively prolonging the restenosis time and reducing the need for liver resection and liver transplantation due to complications. The through-cavity facilitates the passage of the guidewire, enabling surgical procedures for the patient. After the surgery, bile can be drained through the drainage hole and through-cavity. The regulating valve can clamp the first connecting tube, and the pressure monitoring and alarm device can detect the pressure inside the balloon. By setting a pressure threshold for the pressure monitoring and alarm device, when the detected pressure threshold is lower than the minimum value, it indicates that the balloon has not achieved the desired dilation effect, and therefore, pressurization is required. An alarm will sound when the balloon pressure suddenly drops to an ineffective pressure or becomes too high, preventing ineffective dilation and damage to the dilated tissue. Attached Figure Description

[0010] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0011] Figure 1 This is a schematic diagram of the structure of this utility model;

[0012] Figure 2 This is a cross-sectional structural diagram of the present invention;

[0013] Figure 3 This is a schematic diagram of the regulating valve in this utility model;

[0014] Figure 4 This is a cross-sectional structural diagram of the regulating valve in this utility model.

[0015] In the diagram: 1. Main tube; 2. Through cavity; 3. First cavity; 4. Second cavity; 5. Balloon; 6. First connecting tube; 7. Second connecting tube; 8. Regulating valve; 81. Valve tube; 82. Valve core; 83. Rotating plate; 84. Through hole; 85. Arc groove; 86. First groove; 87. Second groove; 88. Adjusting rod; 9. Drainage hole; 10. Arc end; 11. Pressure monitoring and alarm device. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] Please see Figures 1-4 The present invention provides the following technical solution: a continuous graded dilation drainage catheter, comprising a main tube 1, a through cavity 2 for guide wire passage and bile drainage in the middle of the main tube 1, a first cavity 3 and a second cavity 4 inside the main tube 1, a balloon 5 on one end surface of the main tube 1, a first connecting tube 6 and a second connecting tube 7 respectively installed on both sides of the other end of the main tube 1, the first connecting tube 6 communicating with the first cavity 3, the second connecting tube 7 communicating with the second cavity 4, a regulating valve 8 installed on the surface of the first connecting tube 6, a pressure monitoring alarm device 11 installed at the end of the second connecting tube 7, and drainage holes 9 communicating with the through cavity 2 on both sides of the balloon 5 on the surface of the main tube 1, the balloon 5 communicating with the first cavity 3 and the second cavity 4.

[0018] In this embodiment, the regulating valve 8 includes a valve tube 81 connected to the first connecting pipe 6. A valve core 82 is rotatably connected inside the valve tube 81. The rotating shaft of the valve core 82 extends to the outside of the valve tube 81 and is fixedly connected to the rotating plate 83. A through hole 84 is opened in the middle of the valve core 82. An arc-shaped groove 85 is opened on the surface of the rotating plate 83. A first groove 86 and a second groove 87 are opened at both ends of the arc-shaped groove 85, respectively. An adjusting rod 88 is fixedly connected to the surface of the valve tube 81. When the adjusting rod 88 is vertically located in the first groove 86, the through hole 84 of the valve core 82 communicates with the valve tube 81. When the adjusting rod 88 is vertically located in the second groove 87, the valve core 82 blocks the valve tube 81.

[0019] Specifically, the rotating plate 83 drives the valve core 82 to rotate, thereby making the through hole 84 of the valve core 82 connected to the valve pipe 81. This method can achieve the sealing effect of the first connecting pipe 6. During the adjustment of the rotating plate 83, when the adjusting rod 88 moves into the first groove 86 or the second groove 87, this method can limit and fix the rotating plate 83, preventing the valve core 82 from blocking the valve pipe 81 due to accidental rotation of the rotating plate 83, thus reducing the impact of accidents on the sealing effect of the first connecting pipe 6. In the event of a situation where valve pipe 81 is blocked, simply turn the end of adjusting rod 88 outward to disengage it from the second groove 87, and simultaneously rotate rotating plate 83. The arc groove 85 facilitates the rotation of rotating plate 83. When rotating plate 83 is adjusted so that adjusting rod 88 is aligned with the first groove 86, release adjusting rod 88. Adjusting rod 88 will engage in the first groove 86 to limit rotating plate 83. In this way, the first connecting pipe 6 can be blocked, thereby maintaining the expansion effect of balloon 5.

[0020] In this embodiment, the size of the through cavity 2 is 0.35mm-0.45mm, and the expansion size of the balloon 5 is 4mm-12mm.

[0021] Specifically, since the size of the perforation cavity 2 is 0.35mm-0.45mm, the patient can be treated with a guidewire. The expansion size of the balloon 5 is 4mm-12mm. Therefore, the balloon 5 can be expanded in stages, thereby expanding the stenotic segment in stages and prolonging the restenosis time.

[0022] In this embodiment, the main tube 1 is provided with an arc-shaped end 10 at one end near the balloon 5.

[0023] Specifically, the rounded end 10 can reduce discomfort when the main tube 1 is placed inside the patient's body.

[0024] Working principle: After placing the main tube 1 into the patient's body, the regulating valve 8 is opened and air is injected through the first connecting tube 6. The air enters the balloon 5 through the first cavity 3, causing the balloon 5 to inflate. The inflation of the balloon 5 serves two purposes: it fixes the catheter and it dilates the narrowed segment. By injecting air into the balloon 5 in stages, the balloon 5 continuously inflates, thus enabling graded and continuous dilation of the narrowed segment, effectively prolonging the restenosis time and reducing the need for liver resection or liver transplantation due to complications. The perforation lumen 2 facilitates the passage of the guidewire, allowing for surgical procedures. After the surgery, bile can be drained through the perforation lumen 2 and the drainage hole 9. The regulating valve 8 can clamp the first connecting pipe 6. Since the first connecting pipe 6 and the second connecting pipe 7 are connected to the balloon 5 through the first cavity 3 and the second cavity 4 respectively, the pressure monitoring and alarm device 11 can detect the pressure inside the balloon 5. The pressure monitoring and alarm device 11 can monitor the pressure inside the balloon 5. By setting a pressure threshold for the pressure monitoring and alarm device 11, when the detected pressure threshold is less than the minimum value, it means that the balloon 5 cannot achieve the expansion effect, so it needs to be pressurized. When the pressure of the balloon 5 suddenly drops to an ineffective pressure or too high a pressure, an alarm is triggered to avoid ineffective expansion and damage to the expanded tissue. In addition, the rotating plate 83 of the regulating valve 8 will not easily rotate during use, affecting the sealing effect of the first connecting pipe 6.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A continuous graded dilation drainage catheter, comprising a main tube (1), characterized in that: The main tube (1) has a through cavity (2) in the middle for guide wire passage and bile drainage. The main tube (1) has a first cavity (3) and a second cavity (4) inside. A balloon (5) is provided on one end surface of the main tube (1). A first connecting tube (6) and a second connecting tube (7) are respectively installed on both sides of the other end of the main tube (1). The first connecting tube (6) is connected to the first cavity (3), and the second connecting tube (7) is connected to the second cavity (4). A regulating valve (8) is installed on the surface of the first connecting tube (6). A pressure monitoring alarm device (11) is installed at the end of the second connecting tube (7). Drainage holes (9) connecting the through cavity (2) are provided on both sides of the balloon (5) on the surface of the main tube (1). The balloon (5) is connected to the first cavity (3) and the second cavity (4).

2. The continuous graded dilation drainage catheter according to claim 1, characterized in that: The regulating valve (8) includes a valve tube (81) connected to the first connecting pipe (6). A valve core (82) is rotatably connected inside the valve tube (81). The rotation axis of the valve core (82) extends to the outside of the valve tube (81) and is fixedly connected to the rotating plate (83). A through hole (84) is opened in the middle of the valve core (82). An arc groove (85) is opened on the surface of the rotating plate (83). A first groove (86) and a second groove (87) are opened at both ends of the arc groove (85). An adjusting rod (88) is fixedly connected to the surface of the valve tube (81).

3. The continuous graded dilation drainage catheter according to claim 2, characterized in that: When the adjusting rod (88) is vertically located in the first groove (86), the through hole (84) of the valve core (82) is connected to the valve tube (81). When the adjusting rod (88) is vertically located in the second groove (87), the valve core (82) blocks the valve tube (81).

4. The continuous graded dilation drainage catheter according to claim 1, characterized in that: The size of the through cavity (2) is 0.35mm-0.45mm, and the expansion size of the balloon (5) is 4mm-12mm.

5. A continuous graded dilation drainage catheter according to claim 1, characterized in that: The main tube (1) is provided with an arc end (10) at one end near the balloon (5).

Images