Córdoba realizó el primer implante intrasacular del interior para tratar aneurisma cerebral

A 64-year-old woman arrived at Hospital Italiano in Córdoba carrying two separate threats inside her skull. Less than a month earlier, surgeons had opened her head to remove a brain tumor. During her recovery, imaging revealed something else: an aneurysm—a ballooning weakness in an artery wall that could rupture without warning and cause catastrophic bleeding. On May 11, the hospital's neurovascular team threaded catheters through an artery in her groin, navigated them through her bloodstream to her brain, and placed a small device directly inside the aneurysm to seal it from within. The procedure lasted just over thirty minutes. She went home the next day.

This was the first time this particular technology—an intra-saccular implant—had been used anywhere outside Buenos Aires. It was only the third time it had been used in Argentina at all. The distinction matters because it signals a shift in how complex brain conditions are being treated, and where that treatment is becoming available.

An aneurysm is a bulge in an artery, a weak spot that balloons outward under the pressure of blood flow. The danger is rupture. When it happens, blood floods into the brain tissue or the space surrounding it, causing stroke, brain damage, or death. Once an aneurysm is found and its anatomy is suitable for intervention, doctors typically recommend treatment to eliminate the risk. For decades, that meant open surgery—cracking the skull, finding the vessel, and clipping the aneurysm shut. It was effective but carried real risks, especially for patients already weakened by recent procedures.

The newer approach is endovascular: instead of opening the skull, doctors work through the blood vessels themselves, using catheters small enough to thread through arteries. They can reach the brain from inside the circulatory system, treating the problem with minimal trauma to surrounding tissue. The intra-saccular device represents a refinement of this strategy. Rather than placing an implant in the main vessel—which can require patients to take blood-thinning medications indefinitely to prevent clots—the intra-saccular approach places the device inside the aneurysm sac itself. In this patient's case, that meant she could avoid the double antiplatelet therapy that other endovascular devices demand. For someone who had just undergone brain surgery, avoiding aggressive blood-thinning medication reduced the risk of post-operative bleeding complications.

Matías Quaglia, the neurointerventionist who performed the procedure, explained the technical path: a small catheter entered through the femoral artery in the groin, then traveled upward through the arterial system to the brain, guided by real-time imaging from an angiograph. Once the catheter reached the aneurysm, the device was deployed to close it from the inside. The woman's aneurysm had particular anatomical features—the shape and position of its neck—that made conventional open surgery risky or impossible. The endovascular approach was her best option.

Argentina has been developing endovascular neurosurgery for four decades. In the 1980s, doctors began using embolization techniques—filling aneurysms with material to block blood flow. By 1989, metal microcoils were being used as an alternative to open clipping. By the time a historical review was published by the Argentine Neurosurgery Association, the field had matured enough that fourteen trained teams across the country were performing roughly 700 endovascular procedures annually, with published research documenting 449 patients treated by these methods. In 2022, a provincial hospital in Buenos Aires performed its first endovascular aneurysm treatment, discharging the patient after two days. But those advances remained concentrated in the capital.

The Córdoba case represents a widening of access. The technology is still rare—only three implants of this type have been placed in the entire country—but the fact that the second and third were in Buenos Aires and Córdoba suggests the capability is beginning to spread. For patients in the interior of Argentina facing complex brain aneurysms, it means treatment options that were once available only in the capital are becoming reachable closer to home. The woman in this case recovered without complications and went home within hours. What happens next will depend on whether other hospitals in the provinces can acquire the equipment and training to replicate what Córdoba accomplished.