Intercostal catheter (ICC) insertion is a common hospital procedure, but due to the implant's proximity to the chest wall, additional precautions are necessary for patients with breast implants. This is especially critical in cases of haemothorax, where the ICC is directed basally to facilitate fluid drainage. A ruptured breast implant can lead to pain, infection, aesthetic deformities, and capsular contracture. This report discusses the case of a 72-year-old female with a unilateral breast implant who required ICC placement. Imaging revealed that the ICC was placed more anteriorly than clinical guidelines recommend, narrowly avoiding the breast implant. The standard procedure involves identifying and marking the “triangle of safety,” located between the lateral border of the pectoralis major, the anterior border of the latissimus dorsi, and the fifth intercostal space above the nipple line. However, ICC insertion within or near this zone may still risk implant rupture. To mitigate this risk, the authors recommend palpating and repositioning the “triangle of safety” superiorly by 2 cm when managing patients with breast implants. This adjustment can help minimise the likelihood of implant injury. The case also underscores the importance of post-procedure imaging to confirm proper ICC placement and assess breast implant integrity. These modifications to current practice aim to enhance patient safety and reduce complications in this unique patient population.