Patent ID: 11116993

Abstract:
A catheter apparatus (10) includes a tubular member (11); multiple fluid-flow pipe members (13), each having a proximal end (19) and a distal end (18), and being disposed along a first axial direction of the tubular member; multiple node members (15) disposed along a first axial direction of the tubular member, wherein two adjacent node members (15) form a segment (1a); and a periphery member (14), wherein the periphery member (14) wraps the multiple node members (15) to form a space (1b) with the segment (1a) formed between the two adjacent node members (15). The catheter apparatus (10) can irradiate the entire diffuse tumor during one brachytherapy process without repeated placement of the catheter. Meanwhile, it can be smoothly inserted into the patient's narrow body cavity because there are no external balloons. A brachytherapy system adopts the catheter apparatus (10).