Drainage apparatus for hepatobiliary and pancreatic surgery
By introducing elastic bands and adjustment mechanisms into the drainage equipment for hepatobiliary and pancreatic surgery, the problem of drainage tube dislodgement has been solved, the equipment has been stably fixed, the risk of infection has been reduced, and the patient's experience and recovery have been improved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THE FIRST AFFILIATED HOSPITAL ZHEJIANG UNIV COLLEGE OF MEDICINE
- Filing Date
- 2025-01-08
- Publication Date
- 2026-05-29
AI Technical Summary
Existing hepatobiliary and pancreatic surgical drainage equipment is prone to drainage tube dislodgement during use, leading to operational difficulties, increased risk of infection, and impaired patient recovery.
A drainage device with elastic bands and an adjustment mechanism was designed. The elastic bands are tied to the patient's limbs, and the drainage bag is stably fixed by the cooperation of the push rod and the threaded sleeve to prevent it from falling off and ensure the stability of the drainage effect.
It improved the stability of the drainage equipment, reduced patient discomfort and infection risk, enhanced the user experience, and promoted patient recovery.
Smart Images

Figure CN224292282U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of medical device technology, specifically a drainage device for hepatobiliary and pancreatic surgery. Background Technology
[0002] Drainage devices are medical instruments used after or during hepatobiliary and pancreatic surgery to help drain excess fluid, pus, or bile from the body. The main function of these devices is to prevent fluid accumulation in the body, reduce the risk of infection, and promote healing. They are a common and well-established surgical technique that uses existing openings in the patient's body or surgical incisions to connect drainage devices to extract fluid-like substances that have adverse effects from the patient's body.
[0003] Commonly used negative pressure aspiration methods typically involve using an electric negative pressure pump or manual pressing to achieve negative pressure suction. In actual operation, under certain dangerous situations, if the adhesive tape detaches from the skin, the weight of the drainage bag and the internal fluid can easily cause the drainage tube port to detach, making it difficult to control. This places excessive demands on the operator's technical skills and psychological qualities, posing risks and potentially impacting the patient's recovery.
[0004] Therefore, a drainage device for hepatobiliary and pancreatic surgery is proposed. Utility Model Content
[0005] The purpose of this invention is to provide a drainage device for hepatobiliary and pancreatic surgery to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, this utility model provides the following technical solution: a drainage device for hepatobiliary and pancreatic surgery, comprising a drainage bag, a drainage tube fixedly connected inside the drainage bag, a protective cap snapped onto the end of the drainage tube away from the drainage bag, elastic bands rotatably connected to both sides of the outer wall of the drainage bag, several semi-circular strips fixedly connected to the inner sides of both elastic bands, several ventilation holes opened in the middle of both elastic bands, a hollow column penetrating through the middle of the end of both elastic bands away from the drainage bag, a push rod slidably connected to the inner wall of the hollow column, and abutment plates rotatably connected to both sides of the end of the push rod near the hollow column.
[0007] Preferably, a threaded tube is fixedly connected to the outer wall of the push rod, and a threaded sleeve is threadedly connected to the outer wall of the threaded tube.
[0008] Preferably, a guide frame is fixedly connected to the bottom of the drainage tube, and a T-shaped block is slidably connected to the inner wall of the guide frame.
[0009] Preferably, both the drainage bag and the T-shaped block are fixedly connected to a bearing seat at their middle parts.
[0010] Preferably, a connecting spring is fixedly connected to the middle of the two side bearings.
[0011] Compared with the prior art, the beneficial effects of this utility model are:
[0012] 1. By setting an adjustable mechanism on the outer wall of the drainage bag for binding and fixing, the bag can be fixed to the limbs when the patient uses it. Fixing the drainage bag can prevent it from moving or falling off during the activity, ensuring the stability of the drainage effect. Fixing the drainage bag can reduce patient discomfort caused by bag shaking or improper position, improving the user experience. Fixing the drainage bag can reduce contact with the outside world and reduce the risk of infection, especially during the postoperative recovery period. Patients can carry the drainage bag more conveniently in daily activities, reducing the impact on their lives. Medical staff can check and change the drainage bag more conveniently, ensuring the smooth progress of the drainage process.
[0013] 2. The adjustable mechanism can be adjusted according to the patient's body shape and needs, providing a personalized fixation method to adapt to different patients' usage habits. Fixing the drainage bag can ensure the patency of the drainage tube, improve drainage efficiency, and promote patient recovery. The fixed drainage bag can make patients feel safer and reduce anxiety caused by worrying that the bag will fall off. Attached Figure Description
[0014] Figure 1 This is a three-dimensional schematic diagram of the overall device of this utility model;
[0015] Figure 2 This is a front view schematic diagram of the overall device of this utility model;
[0016] Figure 3 This is a top view of the overall device of this utility model;
[0017] Figure 4 This is a vertical cross-sectional view of the guide frame of this utility model;
[0018] Figure 5 This utility model Figure 4 Enlarged diagram of point A in the middle.
[0019] In the picture:
[0020] 1. Drainage bag; 2. Drainage tube; 3. Protective cover; 4. Elastic band; 5. Semicircular strip; 6. Ventilation hole; 7. Hollow column; 8. Push rod; 9. Abutment plate; 10. Threaded tube; 11. Threaded sleeve; 12. Guide frame; 13. T-block; 14. Connecting spring; 15. Shaft seat. Detailed Implementation
[0021] 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.
[0022] Please see Figures 1 to 5 An embodiment of this utility model is provided: a drainage device for hepatobiliary and pancreatic surgery, including a drainage bag 1, a drainage tube 2 fixedly connected inside the drainage bag 1, a protective cover 3 snapped onto the end of the drainage tube 2 away from the drainage bag 1, elastic bands 4 rotatably connected to both sides of the outer wall of the drainage bag 1, a number of semi-circular strips 5 fixedly connected to the inner side of both elastic bands 4, a number of ventilation holes 6 opened in the middle of both elastic bands 4, a hollow column 7 penetrating through the middle of the end of both elastic bands 4 away from the drainage bag 1, a push rod 8 slidably connected to the inner wall of the hollow column 7, and abutment plates 9 rotatably connected to both sides of the end of the push rod 8 near the hollow column 7;
[0023] Among them: the elastic band 4 is made of skin-friendly and breathable material, and the semi-circular strip 5 is made of soft rubber.
[0024] Better: Before the patient uses the drainage device, the drainage bag 1 is tied to the appropriate limbs by the elastic bands 4 on both sides. By pushing the push rod 8, the abutment plates 9 on both sides are rotated inward, and the hollow column 7 passes through the middle of the elastic bands 4 on both sides. Then, the push rod 8 is pulled in the opposite direction, so that the abutment plates 9 on both sides can rotate outward and abut against the outer wall of the elastic band 4, thus completing the connection of the elastic bands 4 on both sides. The semi-circular strip 5 can separate the elastic band 4 from the skin in multiple gaps, allowing the skin to breathe better. With the cooperation of the various vents 6, better ventilation effect is achieved. The protective cover 3 can isolate and prevent bacteria from the port of the drainage tube 2.
[0025] A threaded tube 10 is fixedly connected to the outer wall of the push rod 8. A threaded sleeve 11 is threadedly connected to the outer wall of the threaded tube 10. A guide frame 12 is fixedly connected to the bottom of the drainage tube 2. A T-shaped block 13 is slidably connected to the inner wall of the guide frame 12. A shaft seat 15 is fixedly connected to the middle of both the drainage bag 1 and the T-shaped block 13. A connecting spring 14 is fixedly connected to the middle of the shaft seats 15 on both sides.
[0026] Wherein: the guide frame 12 has a T-shaped groove inside that matches the T-shaped block 13;
[0027] Even better: After the elastic bands 4 on both sides are bound, the threaded sleeve 11 can be rotated on the outer wall of the threaded tube 10 until the threaded sleeve 11 abuts against the outer wall of the elastic band 4, thus completing the binding of the entire drainage device 1. A T-shaped block 13 that can be moved and adjusted by the guide frame 12 is set between the drainage bag 1 and the drainage tube 2, so that the drainage tube 2 can be pulled with the cooperation of the connecting spring 14, avoiding tangling and knotting.
[0028] The working principle of the above implementation is as follows:
[0029] The operation steps are as follows:
[0030] First, before the patient uses the drainage device, the drainage bag 1 is tied to the appropriate limbs via the elastic bands 4 on both sides. By pushing the push rod 8, the two abutment plates 9 on both sides rotate inward, and the hollow column 7 passes through the middle of the elastic bands 4 on both sides. Then, by pulling the push rod 8 in the opposite direction, the abutment plates 9 on both sides rotate outward and abut against the outer wall of the elastic band 4, thus completing the connection of the elastic bands 4 on both sides. The semi-circular strip 5 can separate the elastic band 4 from the skin in multiple gaps, allowing the skin to breathe better. With the cooperation of the various vents 6, better ventilation is achieved. The protective cover 3 can isolate and prevent bacteria from the port of the drainage tube 2.
[0031] After the elastic bands 4 on both sides are bound, the threaded sleeve 11 can be rotated on the outer wall of the threaded tube 10 until the threaded sleeve 11 abuts against the outer wall of the elastic band 4, thus completing the binding of the entire drainage device 1. A T-shaped block 13 that can be moved and adjusted by the guide frame 12 is set between the drainage bag 1 and the drainage tube 2, so that the drainage tube 2 can be pulled with the help of the connecting spring 14, avoiding tangling and knotting. Fixing the drainage bag 1 can prevent it from moving or falling off during the activity, ensuring the stability of the drainage effect. By fixing the drainage bag 1, the discomfort caused by the bag shaking or improper position can be reduced, improving the user experience. Fixing the drainage bag 1 can reduce contact with the outside world and reduce the risk of infection, especially during the postoperative recovery period. Patients can carry the drainage bag more conveniently in their daily activities, reducing the impact on their lives. Medical staff can check and change the drainage bag more conveniently, ensuring the smooth progress of the drainage process.
[0032] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.
[0033] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. A drainage device for hepatobiliary and pancreatic surgery, characterized in that: The device includes a drainage bag (1), a drainage tube (2) is fixedly connected inside the drainage bag (1), a protective cap (3) is snapped onto the end of the drainage tube (2) away from the drainage bag (1), elastic bands (4) are rotatably connected to both sides of the outer wall of the drainage bag (1), a number of semi-circular strips (5) are fixedly connected to the inner side of the elastic bands (4) on both sides, a number of ventilation holes (6) are opened in the middle of the elastic bands (4) on both sides, a hollow column (7) is inserted through the middle of the end of the elastic bands (4) away from the drainage bag (1), a push rod (8) is slidably connected to the inner wall of the hollow column (7), and abutment plates (9) are rotatably connected to both sides of the end of the push rod (8) near the hollow column (7).
2. The drainage device for hepatobiliary and pancreatic surgery according to claim 1, characterized in that: A threaded tube (10) is fixedly connected to the outer wall of the push rod (8), and a threaded sleeve (11) is threadedly connected to the outer wall of the threaded tube (10).
3. A drainage device for hepatobiliary and pancreatic surgery according to claim 2, characterized in that: The bottom of the drainage tube (2) is fixedly connected to a guide frame (12), and a T-shaped block (13) is slidably connected to the inner wall of the guide frame (12).
4. A drainage device for hepatobiliary and pancreatic surgery according to claim 3, characterized in that: Both the drainage bag (1) and the T-shaped block (13) are fixedly connected to a bearing seat (15) at the middle.
5. A drainage device for hepatobiliary and pancreatic surgery according to claim 4, characterized in that: A connecting spring (14) is fixedly connected to the middle of the two side bearings (15).