A catheter works by providing a hollow tube for urine to drain from the bladder. Here's a detailed explanation:
How a Catheter Drains Urine
- Insertion: A catheter, which is a hollow tube, is carefully inserted into the bladder. This is done through the urethra, which is the natural channel through which urine normally passes from the body. This process is known as urethral catheterisation.
- Drainage: Once inside the bladder, the catheter provides a channel for urine to flow out of the body and into a drainage bag. This helps to manage the urine output when the body can't do it naturally.
- Retention: Your catheter is designed to stay in place. According to our reference, it’s held securely in the bladder by a small balloon that is inflated after the catheter has been properly positioned. This ensures that the catheter doesn't fall out unintentionally.
Key Components & Function:
| Component | Function |
|---|---|
| Hollow Tube | Provides a passage for urine to exit the bladder. |
| Urethra | Natural channel used for inserting the catheter. |
| Small Balloon | Keeps the catheter securely in the bladder. |
Purpose of a Catheter
Catheters are used for various reasons, some common reasons include:
- Urinary retention: When the bladder is unable to empty completely.
- Post-surgery: To assist with urinary drainage during recovery.
- Medical conditions: To manage urinary issues related to illness.
Types of Catheters
- Indwelling Catheters: These stay inside the bladder for a continuous period.
- Intermittent Catheters: Used for short periods or as needed for drainage and then removed.
This ensures that urine is drained effectively when a person can't do it themselves.
