Internal fixation type abdominal cavity drainage tube
By using a balloon anchoring and knob drive device for the internal fixation abdominal drainage tube, the problems of catheter displacement and leakage were solved, achieving stable fixation of the catheter and convenient operation.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIRST AFFILIATED HOSPITAL OF ANHUI MEDICAL UNIV
- Filing Date
- 2025-08-05
- Publication Date
- 2026-07-21
AI Technical Summary
Existing abdominal drainage tubes are prone to displacement and poor puncture access during long-term indwelling due to patient activity or changes in condition, leading to leakage or extravasation of drainage fluid.
An internally fixed abdominal drainage tube was designed, which uses an inflatable balloon for intracavitary anchoring and fixation, combined with a knob-driven negative pressure drainage device, and achieves controllable filling and emptying of the catheter through a sliding ring and pressure switch.
It effectively inhibits catheter displacement, improves the fit between the puncture channel and the catheter, reduces the risk of leakage, and enhances the convenience and safety of the procedure.
Smart Images

Figure CN224523792U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of abdominal drainage technology, and in particular to an internally fixed abdominal drainage tube. Background Technology
[0002] An abdominal drainage tube is a medical catheter inserted percutaneously or intraoperatively. Its tip is located inside the abdominal cavity, and its tail is connected to a drainage collection device. Based on design, they can be divided into passive drainage tubes that rely on gravity or capillary action (such as the Penrose drainage tube) and active drainage tubes that rely on negative pressure suction (such as the Jackson-Pratt and Blake drainage tubes).
[0003] Most existing abdominal drainage catheters have straight or pre-shaped curved tips. After percutaneous insertion, they mainly rely on external fixation devices for reinforcement. However, during the long-term indwelling period of the drainage tube, due to changes in the patient's condition such as activity or malnutrition, complications such as catheter displacement or poor fit between the puncture channel and the drainage tube are likely to occur, which can lead to exudation around the puncture site or extravasation of the drainage fluid.
[0004] Therefore, an internally fixed abdominal drainage tube is proposed. Utility Model Content
[0005] To achieve the above objectives, the present invention adopts the following technical solution:
[0006] An internally fixed abdominal drainage tube includes a drainage tube with a balloon located at a 10-centimeter mark on the drainage tube. A water injection tube is connected to the right side of the balloon. An isolation rubber ring is fixedly connected to the inside of the balloon. A fixing ring is fixedly connected to the right side of the isolation rubber ring. A first spring is fixedly connected to the left side of the fixing ring. A sliding ring is fixedly connected to the left side of the first spring.
[0007] Preferably, a knob is fixedly connected to the left side of the water injection pipe via a diverter, a sleeve is fixedly connected to the inside of the knob, a sealing ring is fixedly connected to the left side of the inside of the sleeve, a water-stop ball is slidably connected inside the sleeve, a second spring is provided on the right side of the water-stop ball, and six water outlet holes are opened on the right side of the sleeve.
[0008] Preferably, a bend is fixedly connected to the right side of the drainage tube, and multiple side holes are opened on the inner side of the bend. A drainage switch is sleeved on the left side of the drainage tube, and a drainage port is fixedly connected to the left side of the drainage tube.
[0009] Preferably, a scale is provided on the outer surface of the drainage tube, the outer layer of the scale is covered with a transparent adhesive layer, and an alarm is fixedly connected to the front side of the diverter.
[0010] Preferably, the inner side of the fixing ring is fixedly connected to the outer side of the drainage tube, and a pressure switch fixedly connected to the outer side of the drainage tube is provided 10 mm to the right of the sliding ring.
[0011] Preferably, the knob has six slots inside, and the size of the six water outlet holes is adapted to the size of the six slots.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] 1. Intracavitary anchoring and fixation are achieved by embedding an inflatable balloon in the catheter, which effectively inhibits catheter displacement and simultaneously improves the fit of the puncture channel-catheter interface, thereby reducing the risk of leakage around the puncture point.
[0014] 2. The one-way anti-backflow water injection valve enables controllable inflation of the balloon, and the knob-driven negative pressure drainage device significantly improves the bedside convenience and operational safety of intracavitary fixation and balloon emptying operations. Attached Figure Description
[0015] Figure 1 This is a three-dimensional structural diagram of an internally fixed abdominal drainage tube in its unused state, as proposed in this utility model.
[0016] Figure 2 This is a schematic diagram of the drainage state of an internally fixed abdominal drainage tube proposed in this utility model;
[0017] Figure 3 This is a cross-sectional view of the balloon in an internally fixed abdominal drainage tube proposed in this utility model;
[0018] Figure 4 This is a cross-sectional view of the knob in an internally fixed abdominal drainage tube proposed in this utility model;
[0019] Figure 5 This is an exploded view of the balloon structure in an internally fixed abdominal drainage tube proposed in this utility model;
[0020] Figure 6 This is an exploded view of the structure of the knob in an internally fixed abdominal drainage tube proposed in this utility model.
[0021] In the diagram: 1. Drainage pipe; 11. Elbow; 111. Side hole; 12. Diverter; 13. Drainage switch; 14. Drainage port; 2. Balloon; 21. Fixing ring; 22. Sliding ring; 23. First spring; 24. Isolation rubber ring; 25. Water injection pipe; 26. Pressure switch; 3. Knob; 31. Sleeve; 311. Sealing ring; 312. Water outlet; 32. Water stop ball; 33. Second spring; 4. Alarm. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0023] Reference Figures 1-6 An internally fixed abdominal drainage tube includes a drainage tube 1, a balloon 2 located 10 cm from the graduation mark on the drainage tube 1, a water injection tube 25 connected to the right side of the balloon 2, an isolation rubber ring 24 fixedly connected to the inside of the balloon 2, a fixing ring 21 fixedly connected to the right side inside the isolation rubber ring 24, a first spring 23 fixedly connected to the left side of the fixing ring 21, a sliding ring 22 fixedly connected to the left side of the first spring 23, a scale on the outer surface of the drainage tube 1, the scale being covered with a transparent adhesive layer, an alarm 4 fixedly connected to the front of a diverter 12, the inner side of the fixing ring 21 fixedly connected to the outer side of the drainage tube 1, and a pressure switch 26 fixedly connected to the outer side of the drainage tube 1 located 10 mm to the right of the sliding ring 22.
[0024] With the above technical solution, during the puncture abdominal drainage surgery, when the drainage tube 1 reaches the preset position, the balloon 2 is inflated with water. When the patient turns over or moves and pulls the tube, the sliding ring 22 will move backward. At this time, the right side of the sliding ring 22 will squeeze the pressure switch 26, causing the alarm 4 to sound to remind the patient to avoid excessive pulling of the drainage tube 1. After the force pulling the tube disappears, the first spring 23 will push the sliding ring 22 back to its original position.
[0025] Specifically, a knob 3 is fixedly connected to the left side of the water injection pipe 25 via a diverter 12. A sleeve 31 is fixedly connected to the inside of the knob 3. A sealing ring 311 is fixedly connected to the left side of the inside of the sleeve 31. A water-stop ball 32 is slidably connected inside the sleeve 31. A second spring 33 is provided on the right side of the water-stop ball 32. Six water outlet holes 312 are opened on the right side of the sleeve 31. Six slots are opened inside the knob 3. The size of the six water outlet holes 312 is adapted to the size of the six slots.
[0026] Using the above technical solution, when the inflatable balloon 2 is used to anchor the cavity, the syringe is inserted into the sealing ring 311, and then the water-stopping ball 32 is pushed backward. The water in the syringe is injected into the balloon 2 through the water injection tube 25 to inflate the balloon 2 and achieve intracavitary anchoring and fixation. When it is necessary to remove the drainage tube 1, the knob 3 is rotated 30 degrees to the left or right to align the water outlet 312 with the groove inside the knob 3. The negative pressure causes the water inside the balloon 2 to flow through the water injection tube 25 to the water outlet 312, and finally flow out from the groove inside the knob 3.
[0027] Specifically, a bend 11 is fixedly connected to the right side of the drainage tube 1, and multiple side holes 111 are opened inside the bend 11. A drainage switch 13 is sleeved on the left side of the drainage tube 1, and a drainage port 14 is fixedly connected to the left side of the drainage tube 1.
[0028] With the above technical solution, during the puncture abdominal drainage surgery, the elbow 11 of the drainage tube 1 is inserted into the abdominal cavity at a predetermined depth. The cavity formed inside the elbow 11 is used to prevent muscle tissue from blocking the drainage hole during the drainage process.
[0029] Working principle:
[0030] When using this utility model, the elbow 11 part of the drainage tube 1 is inserted into the abdominal cavity at a predetermined depth. The cavity formed inside the elbow 11 is used to prevent muscle tissue from blocking the drainage hole during the drainage process.
[0031] Based on the above, when the drainage tube 1 reaches the preset position, the syringe is inserted into the sealing ring 311 to push the water-stopping ball 32 backward. Then, the water in the syringe is injected into the balloon 2 through the water injection tube 25 to inflate the balloon 2 and achieve intracavitary anchoring and fixation. When the patient pulls the catheter due to turning over or being moved, the sliding ring 22 will be squeezed and moved backward. At this time, the right side of the sliding ring 22 will squeeze the pressure switch 26, causing the alarm 4 to sound a buzzer to remind the patient to avoid excessive pulling of the drainage tube 1. After the force pulling the catheter disappears, the first spring 23 will push the sliding ring 22 back to its original position.
[0032] Based on the above, when it is necessary to remove the drainage tube 1, rotating the knob 3 thirty degrees to the left or right will align the water outlet 312 with the groove inside the knob 3. The water inside the balloon 2 will flow through the water injection tube 25 to the water outlet 312 under negative pressure, and finally flow out through the groove inside the knob 3. Finally, the drainage tube 1 will be removed from the puncture site.
[0033] The above description is only a preferred embodiment of this utility model, but this utility model...
[0034] The scope of protection is not limited thereto; any person skilled in the art may apply this invention.
[0035] Within the scope of the technology disclosed in this utility model, the technical solution and the utility model structure of this utility model are as follows:
[0036] Any equivalent substitutions or modifications should be included within the protection scope of this utility model.
Claims
1. An internally fixed abdominal drainage tube, comprising a drainage tube (1), characterized in that, A balloon (2) is installed at the 10 cm mark of the drainage tube (1). A water injection tube (25) is connected to the right side of the balloon (2). An isolation rubber ring (24) is fixedly connected to the inside of the balloon (2). A fixing ring (21) is fixedly connected to the right side of the inside of the isolation rubber ring (24). A first spring (23) is fixedly connected to the left side of the fixing ring (21). A sliding ring (22) is fixedly connected to the left side of the first spring (23).
2. The internally fixed abdominal drainage tube according to claim 1, characterized in that, A knob (3) is fixedly connected to the left side of the water injection pipe (25) via a diverter (12). A sleeve (31) is fixedly connected to the inside of the knob (3). A sealing ring (311) is fixedly connected to the left side of the inside of the sleeve (31). A water-stop ball (32) is slidably connected inside the sleeve (31). A second spring (33) is provided on the right side of the water-stop ball (32). Six water outlet holes (312) are opened on the right side of the sleeve (31).
3. The internally fixed abdominal drainage tube according to claim 1, characterized in that, The right side of the drainage tube (1) is fixedly connected to an elbow (11), and the elbow (11) has multiple side holes (111) on its inner side. The left side of the drainage tube (1) is fitted with a drainage switch (13), and the left side of the drainage tube (1) is fixedly connected to a drainage port (14).
4. The internally fixed abdominal drainage tube according to claim 2, characterized in that, The outer surface of the drainage tube (1) is provided with a scale, and the outer layer of the scale is covered with a transparent adhesive layer. An alarm (4) is fixedly connected to the front side of the diverter (12).
5. The internally fixed abdominal drainage tube according to claim 1, characterized in that, The inner side of the fixing ring (21) is fixedly connected to the outer side of the drainage tube (1), and a pressure switch (26) is fixedly connected to the outer side of the drainage tube (1) at a distance of 10 mm to the right of the sliding ring (22).
6. The internally fixed abdominal drainage tube according to claim 2, characterized in that, The knob (3) has six slots inside, and the size of the six water outlets (312) is adapted to the size of the six slots.