Segmentation by type classifies Neuro‑Oncological Diseases Device offerings into Implantable Devices, External Devices, and Hybrid Systems. Implantable Devices consist of intracranial drug‑delivery wafers, programmable neurostimulators, and biodegradable scaffolds that remain within the cranial cavity after placement; their market contribution is moderated by regulatory scrutiny and surgical risk, yet they generate recurring revenue through refill and programming services. External Devices comprise navigation consoles, imaging consoles, and external radiation delivery units that are positioned outside the patient’s body; these products dominate volume sales because they serve multiple procedures and can be amortized across institutions. Hybrid Systems integrate implantable components with external control units, exemplified by wireless telemetry‑enabled neurostimulators and robot‑assisted resection platforms; this segment is poised for accelerated growth as convergence technologies reduce procedural time and improve precision. Collectively, the three type categories shape the overall market size, with external devices contributing the bulk of sales, implantables offering high‑margin niche opportunities, and hybrids driving future innovation within the Neuro‑Oncological Diseases Device market.