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Foley Catheters: Purpose, Use, and Evolving Importance in Clinical Care
Foley catheters, also known as indwelling urinary catheters, play a crucial role in modern medical care by helping patients who are unable to empty their bladder naturally. Designed to remain inside the bladder for an extended period, these devices allow controlled drainage of urine, preventing complications such as urinary retention, bladder overdistension, and kidney strain. Although simple in appearance, Foley catheters are the result of meticulous engineering that focuses on patient safety, comfort, and long-term performance.
A Foley catheter is typically made of flexible latex or silicone, materials chosen for their biocompatibility and ease of insertion. The design includes two channels: one for draining urine and another for inflating a small balloon that holds the catheter in place. This balloon mechanism ensures the catheter remains securely positioned within the bladder while minimizing the risk of accidental removal. Over the years,…