Kuros Biosciences launches MagnetOs MIS Delivery System by completing first cases, and continues global expansion with incremental Brazil clearance
Schlieren (Zürich), Switzerland, August 5, 2025 – Kuros Biosciences (“Kuros” or the “Company”) a leader in innovative biologic technologies, today announced the completion of the first U.S. cases using the new MagnetOsTM MIS Delivery System – a sterile, prefilled, single-use delivery system engineered for Minimally Invasive Surgery (MIS) in spine procedures. Following FDA 510(k) clearance of the MagnetOs MIS Delivery System in May, these first cases mark a significant milestone in expanding surgeon access to a more streamlined approach for graft delivery.
Dr. Daniel Park, orthopedic spine surgeon, performed his first case using the new FDA-cleared system in Southfield, Michigan. “MagnetOs MIS delivered smooth, precise graft placement in a typically challenging MIS TLIF case – no preparation, no thawing, just immediate delivery and efficiency. It pairs streamlined handling with compelling clinical data, making it a meaningful advancement for surgeons who value both efficiency and biologically robust healing,” said Dr. Park. Kuros anticipates expanding availability of the MIS system with a full commercial launch this fall.
MagnetOs MIS builds on the proven science of MagnetOs and its proprietary NeedleGrip™ submicron surface technology, which harnesses the immune system to stimulate bone growth.*†1-3 It is engineered for precise delivery, surgical efficiency, and predictable fusion outcomes.4 Compared to delivering MagnetOs in a traditional, funnel-based system, MagnetOs MIS achieved graft placement three times faster, optimizing time in the operating room.5
The MIS system is supported by robust published clinical evidence for MagnetOs in cases where minimally invasive procedures and surgical site accessibility is crucial. In a retrospective study, MagnetOs achieved a 94.4% fusion rate across 36 levels treated in patients undergoing MIS and open transforaminal lumbar interbody fusions (TLIF), where the majority of patients had comorbidities such as obesity, smoking, diabetes, or a previous spine surgery.6 These results build on previously published Level I prospective, randomized, controlled human clinical data demonstrating that MagnetOs achieved nearly twice the fusion rate of autograft in posterolateral fusion (79% vs. 47%).4
Additionally, and following the recent ANVISA approval of MagnetOs Granules, Kuros also announced that MagnetOs Putty now has been approved by the Brazilian regulatory authority, expanding the company’s entry into the South American spine and orthopedic market. This milestone reflects the increasing global demand for MagnetOs as a proven, predictable and safe bone grafting option.
Chris Fair, CEO of Kuros Biosciences, commented: “With the first MagnetOs MIS case completed, we’re delivering what surgeons have been asking for – precision, speed, and proven outcomes when utilizing minimally invasive surgical techniques, which we know are on the rise. This unlocks access to the high-growth U.S. MIS spine segment. With the recent approval of MagnetOs Putty in Brazil, we’re accelerating access to our technology in key international markets where we see strong projected market growth.”