Disposable drainage bags mainly have the following functions:
1、 Liquid drainage
1. Urine drainage
      After urinary system diseases or surgeries, such as bladder surgery, patients may experience difficulty urinating or require accurate recording of urine volume. Disposable drainage bags can be connected to the bladder through a catheter to continuously extract urine from the body, avoiding urine accumulation in the bladder that can cause excessive bladder swelling, damage, or affect wound healing. For example, for patients with urinary incontinence, drainage bags can effectively collect urine, keep the skin dry and clean, and prevent skin inflammation caused by urine immersion, such as diaper rash, skin infections, etc.
      It can also facilitate medical staff to accurately record patients' urine output, which is very important for evaluating patients' kidney function, fluid balance, and changes in their condition. By observing the scale on the drainage bag, the amount of urine can be monitored at any time, and abnormal situations such as oliguria (24-hour urine volume less than 400ml) or polyuria (24-hour urine volume exceeding 2500ml) can be detected in a timely manner, providing a basis for adjusting subsequent plans.
2. Drainage of wound exudate
      After surgery, there will be exudate from the wound, including blood, tissue fluid, etc. Using a disposable drainage bag to connect the wound drainage tube can promptly extract the exudate and prevent it from accumulating inside the wound. Accumulated exudate may become a breeding ground for bacteria, causing infections and prolonging wound healing time. For example, after abdominal surgery, connecting a drainage bag to an abdominal drainage tube can effectively remove exudate and fluid from the abdominal cavity, reduce the risk of abdominal infection, and promote normal wound healing.
     For patients with deep wounds or infected wounds, drainage bags can also help medical staff observe the properties of exudate, such as color, texture, odor, etc. Different types of exudate may indicate different changes in the patient's condition. For example, turbidity and purulent changes in the drainage fluid may indicate infection in the wound; The drainage fluid is bloody and the amount suddenly increases, which may indicate bleeding inside the wound.
2、 Prevent cross infection
1. Material characteristics
     Disposable drainage bags are made of medical grade plastic and other materials, which are usually subjected to strict disinfection treatment and meet sterile standards. During use, it can effectively prevent external bacteria, viruses, and other pathogens from entering the patient's body through the drainage system, thereby reducing the risk of iatrogenic infections. For example, there are usually devices at the inlet and outlet of the drainage bag to prevent backflow, such as one-way valves, which can prevent the drainage fluid from flowing back into the body and reduce the possibility of infection.
     As it is a disposable item, it is discarded immediately after use and may not have insufficient disinfection during the cleaning and disinfection process like reusable drainage devices. This is particularly important for patients with weakened immune function, such as cancer patients undergoing chemotherapy, organ transplant patients, etc., as it can provide them with a safer medical environment.
3、 Easy to move and care for
1. Portability
     The disposable drainage bag is designed to be lightweight and easy for patients to carry. Some drainage bags come with fixing devices that can be attached to the patient's clothing or body, allowing the patient to move freely to a certain extent. For example, when a patient needs to walk or move short distances during treatment, the drainage bag can move with the patient without causing any burden, improving the patient's self-care ability.
2. Convenient nursing operations
     Medical staff use disposable drainage bags during the nursing process, which are easy to operate. Its connection and disassembly are relatively convenient, and there is no need for complex disinfection and installation procedures when replacing a new drainage bag. Moreover, the clear markings on the drainage bag facilitate medical staff to quickly and accurately record the amount of drainage fluid and observe changes in the drainage fluid, thereby adjusting nursing measures in a timely manner.