A cranial external drainage kit

Abstract

The utility model discloses a kind of cranial and cerebral external drainage kits, it is related to medical instrument technical field, the liquid inlet end of extracorporeal drainage pipeline is connected with internal drainage tube by drainage tube connector, the liquid outlet end is connected with the top of drip bottle, extracorporeal drainage pipeline is sequentially connected with primary drip jar and primary three-way stop valve, the liquid outlet end of drip bottle is sequentially connected with secondary three-way stop valve, secondary drip jar, double-way stop valve after pipeline, and is connected with drainage bag, backflushing can be implemented to internal drainage tube by extruding primary drip jar;Drip bottle top is equipped with drip bottle exhaust filter, and drainage bag top is equipped with drainage bag exhaust filter, which can prevent the internal drainage tube of patient from being blocked. In addition, by integrating the exhaust filter of breathable bacteria-resistant membrane on the top of drip bottle and drainage bag, the pressure balance inside and outside the system is maintained while bacteria in the environment are trapped, preventing bacteria in the environment from entering and avoiding the accumulation of fluid from being contaminated.

Description

Technical Field

[0001] This utility model relates to the field of medical device technology, specifically to a cranial external drainage kit. Background Technology

[0002] In neurosurgical clinical practice, conditions such as traumatic brain injury, cerebral hemorrhage, and hydrocephalus often lead to the retention of cerebrospinal fluid or pathological fluid, requiring the establishment of an external drainage channel through an external cranial drainage system to relieve intracranial pressure. Traditional drainage devices generally face two major technical bottlenecks: the risk of drainage tube blockage and the challenge of controlling hospital-acquired infections, directly affecting treatment outcomes and patient safety.

[0003] Existing technologies, such as the external ventricular drainage device with publication number CN114732971A, although achieving the backwashing function of the drip bottle by setting an airbag structure, have significant limitations: 1. One-way backflushing defect: The airbag in this patent can only backflush the liquid outlet of the drip bottle, and cannot clear the internal drainage tubes that are in direct contact with the brain tissue. Clinical data shows that the blockage rate of internal drainage tubes due to protein deposition and blood clots in the effusion is as high as 15%-20%, and this technology cannot solve this core problem, requiring additional interventional procedures, which increases the risk of infection.

[0004] 2. Potential risks of open venting structure: The dropper bottle adopts an open venting design, which lacks a bacterial barrier mechanism. This allows bacteria from the environment to enter the interior through the vent during use, causing liquid accumulation and contamination. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a cranial external drainage kit, which solves the problems mentioned in the background section.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an external brain drainage kit, comprising an external drainage tube, a drip bottle, and a drainage bag. The inlet end of the external drainage tube is connected to the internal drainage tube via a drainage tube connector, and the outlet end is connected to the top of the drip bottle. A first drip chamber and a first three-way shut-off valve are sequentially connected in series on the external drainage tube. The outlet end of the drip bottle is connected to the drainage bag via a tube sequentially connected to a second three-way shut-off valve, a second drip chamber, and a double-way shut-off valve. The first drip chamber is a transparent and elastic structure, and the internal drainage tube can be backflushed by squeezing the first drip chamber. The top of the drip bottle is equipped with a drip bottle exhaust filter, and the top of the drainage bag is equipped with a drainage bag exhaust filter.

[0007] Furthermore, both the No. 1 three-way shut-off valve and the No. 2 three-way shut-off valve include a valve core, an inlet connector, an outlet connector, and a sampling connector. The valve core can switch between the inlet connector and the outlet connector being directly connected or connected to the sampling connector. The sampling connector has a detachable cap at its end, and the cap is connected to the sampling connector by a thread.

[0008] Furthermore, both the No. 1 and No. 2 drip chambers are made of medical-grade transparent silicone. The No. 2 drip chamber is located between the drip bottle and the double-way shut-off valve. By squeezing the No. 2 drip chamber, the liquid outlet end of the drip bottle can be backwashed.

[0009] Furthermore, both the drip bottle exhaust filter and the drainage bag exhaust filter include an exhaust pipe, an exhaust cap, and a breathable and antibacterial membrane, with an annular exhaust hole on the side wall of the exhaust cap.

[0010] Furthermore, the breathable and antibacterial membrane is bonded to the connection between the exhaust pipe and the exhaust cap using medical adhesive.

[0011] Furthermore, the bottom of the drainage bag is connected to a liquid discharge pipe, and the liquid discharge pipe is equipped with a control valve, which is a knob-type shut-off valve or a clamp-type check valve.

[0012] This invention provides a cranial external drainage kit. Compared with the prior art, it has the following advantages: This external brain drainage kit, through the synergistic action of the No. 1 and No. 2 drip chambers, can not only perform precise reverse flushing of the internal drainage tubes to remove protein or blood clot blockages, but also unclog the outlet of the drip bottle. In other words, this drainage kit can prevent blockage of itself and also prevent blockage of the drainage tubes inside the patient's body.

[0013] This external brain drainage kit integrates a breathable and antibacterial membrane exhaust filter at the top of the drip bottle and drainage bag. This maintains the pressure balance inside and outside the system while trapping bacteria in the environment, thus preventing bacteria from entering and avoiding contamination of the effusion. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the three-way shut-off valve in this utility model; Figure 3 This is a half-sectional view of the dropper bottle in this utility model; Figure 4 This is a half-sectional view of the dropper exhaust filter in this utility model.

[0015] In the diagram: 1. External drainage tubing; 2. Drainage tube connector; 3. No. 1 drip chamber; 4. No. 1 three-way shut-off valve; 41. Valve core; 42. Inlet connector; 43. Outlet connector; 44. Sampling connector; 45. Cap; 46. Thread; 5. Drip bottle; 6. Drainage bag; 61. Accumulated fluid discharge tube; 7. No. 2 three-way shut-off valve; 8. No. 2 drip chamber; 9. Double-way shut-off valve; 10. Drip bottle exhaust filter; 101. Exhaust pipe; 102. Exhaust cap; 103. Breathable and antibacterial membrane; 104. Exhaust hole; 11. Drainage bag exhaust filter. 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 Figure 1-4 This utility model provides a technical solution: a cranial external drainage kit, including an external drainage tube 1, a drip bottle 5, and a drainage bag 6. The inlet end of the external drainage tube 1 is integrally connected to a drainage tube connector 2, which allows the inlet end of the external drainage tube 1 to be connected and fixed to the outlet end of the internal drainage tube. The outlet end of the external drainage tube 1 is connected to the inlet end at the top of the drip bottle 5. A first drip chamber 3 and a first three-way shut-off valve 4 are connected in series in sections of the external drainage tube 1. The first drip chamber 3 is transparent and can undergo elastic deformation after being squeezed. When the internal drainage tube becomes blocked, the first three-way shut-off valve 4 can be closed, and... Pressing the No. 1 drip chamber 3 allows the fluid in the external drainage tube 1 to flow back into the internal drainage tube under pressure, thus backwashing the internal drainage tube and effectively preventing blockage by protein or blood clots in the fluid. In addition, staff can observe the flow rate of the fluid through the transparent No. 1 drip chamber 3. If the fluid stops flowing, it indicates that the internal drainage tube is blocked. The outlet end of the drip bottle 5 and the inlet end of the drainage bag 6 are connected in series with the No. 2 three-way shut-off valve 7, the No. 2 drip chamber 8, and the double-way shut-off valve 9, respectively. The top of the drip bottle 5 is connected to the drip bottle exhaust filter 10, and the top of the drainage bag 6 is connected to the drainage bag exhaust filter 11. The No. 1 three-way shut-off valve 4 and the No. 2 three-way shut-off valve 7 have the same structure and function, and both include a valve core 41, an inlet connector 42, an outlet connector 43, a sampling connector 44, a cap 45, and a thread 46. The inlet connector 42 and the outlet connector 43 are connected in series in the path of the external drainage tube 1. The sampling connector 44 is a bypass path. When it is necessary to sample the accumulated liquid, the path from the inlet connector 42 to the outlet connector 43 can be closed by the valve core 41, while the path from the inlet connector 42 to the sampling connector 44 can be opened. Then, the accumulated liquid flowing into the sampling connector 44 can be drawn by a syringe or other sampling device. After sampling, the cap 45 can be rotated and fixed at the sampling port of the sampling connector 44 by the thread 46, and then the path from the inlet connector 42 to the outlet connector 43 can be restored. It should be noted that the valve core 41 is an inherent structure of the No. 1 three-way shut-off valve 4 and belongs to the existing conventional technology. The specific structure and how to change the path will not be described in detail here. The No. 1 dripping funnel 3 and the No. 2 dripping funnel 8 have the same structure and material. The No. 1 dripping funnel 3 is used to backwash and clear blockages in the internal drainage tube, while the No. 2 dripping funnel 8 is used to backwash and clear blockages at the liquid outlet of the dripping bottle 5. The dropper bottle exhaust filter 10 and the drainage bag exhaust filter 11 have the same structure and function to equalize pressure, thereby facilitating drainage. Specifically, they both include an exhaust pipe 101, an exhaust cap 102, a breathable and antibacterial membrane 103, and an exhaust hole 104. The exhaust cap 102 is connected to the upper part of the exhaust pipe 101. The breathable and antibacterial membrane 103 is fixed to the connection between the exhaust pipe 101 and the exhaust cap 102 by adhesive. This prevents bacteria from entering and causing contamination and infection of the accumulated liquid without affecting the passage of gas. The specific structure and principle of the breathable and antibacterial membrane 103 are well known in the art and will not be described in detail here. The exhaust hole 104 is opened around the exhaust cap 102 to allow gas to be discharged.

[0018] The bottom of the drainage bag 6 is connected to the liquid discharge pipe 61, and the outlet of the liquid discharge pipe 61 is connected in series with a control valve. When it is necessary to release the liquid, the control valve of the liquid discharge pipe 61 can be opened. When using this kit, first connect the external drainage tube 1 to the internal drainage tube. Because there is fluid accumulation in the affected area, the pressure in the affected area is greater than the pressure in the external drainage tube 1. Therefore, the fluid in the body will flow naturally into the external drainage tube 1 through the internal drainage tube. The fluid will then flow into the drip bottle 5 through the external drainage tube 1, and then into the drainage bag 6 through the No. 2 three-way shut-off valve 7, the No. 2 drip chamber 8, and the double-way shut-off valve 9. If the bottom of the drip bottle 5 is blocked, squeeze the No. 2 drip chamber 8 and close the double-way shut-off valve 9. Backwashing can quickly remove the protein and blood clots blocking the bottom of the drip bottle 5. Similarly, when the liquid in dripping bucket 3 stops flowing, close the three-way shut-off valve 4 and squeeze dripping bucket 8 to allow the liquid to backwash the internal guide tube and clear the blockage. In addition, during the process of the drip bottle 5 and the drainage bag 6 flowing into the accumulated liquid, the gas inside the drip bottle 5 and the drainage bag 6 will enter the exhaust cap 102 through the exhaust pipe 101 and then be discharged through the exhaust hole 104. During this process, the gas will pass through the breathable and antibacterial membrane 103, but it will not affect the passage of the breathable and antibacterial membrane 103. On the contrary, bacteria in the external environment cannot enter through the breathable and antibacterial membrane 103, thereby preventing the accumulated liquid from being contaminated.

Claims

1. A cranial external drainage kit, characterized in that, The system includes an external drainage tube (1), a drip bottle (5), and a drainage bag (6). The inlet end of the external drainage tube (1) is connected to the internal drainage tube through a drainage tube connector (2), and the outlet end is connected to the top of the drip bottle (5). A first drip chamber (3) and a first three-way shut-off valve (4) are connected in series on the external drainage tube (1). The outlet end of the drip bottle (5) is connected to the drainage bag (6) after being connected in series with a second three-way shut-off valve (7), a second drip chamber (8), and a double-way shut-off valve (9). The first drip chamber (3) is a transparent elastic structure. The internal drainage tube can be backwashed by squeezing the first drip chamber (3). The top of the drip bottle (5) is equipped with a drip bottle exhaust filter (10), and the top of the drainage bag (6) is equipped with a drainage bag exhaust filter (11).

2. The cranial external drainage kit according to claim 1, characterized in that, Both the No. 1 three-way shut-off valve (4) and the No. 2 three-way shut-off valve (7) include a valve core (41), an inlet connector (42), an outlet connector (43), and a sampling connector (44). The valve core (41) can switch the inlet connector (42) to be directly connected to the outlet connector (43) or to the sampling connector (44). The sampling connector (44) has a detachable cap (45) at its end, and the cap (45) is connected to the sampling connector (44) by a thread (46).

3. The cranial external drainage kit according to claim 1, characterized in that, Both the No. 1 drip chamber (3) and the No. 2 drip chamber (8) are made of medical-grade transparent silicone. The No. 2 drip chamber (8) is located between the drip bottle (5) and the double-pass shut-off valve (9). By squeezing the No. 2 drip chamber (8), the liquid outlet end of the drip bottle (5) can be backwashed.

4. The cranial external drainage kit according to claim 1, characterized in that, The dropper bottle exhaust filter (10) and the drainage bag exhaust filter (11) both include an exhaust pipe (101), an exhaust cap (102), and a breathable and antibacterial membrane (103). The exhaust cap (102) has an annular exhaust hole (104) on its side wall.

5. A cranial external drainage kit according to claim 4, characterized in that, The breathable antibacterial membrane (103) is bonded to the connection between the exhaust pipe (101) and the exhaust cap (102) with medical adhesive.

6. A cranial external drainage kit according to claim 1, characterized in that, The bottom of the drainage bag (6) is connected to the liquid discharge pipe (61), and the liquid discharge pipe (61) is equipped with a control valve, which is a knob-type shut-off valve or a clamp-type check valve.

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