[Brain aneurysms treatment with pCONus2 device. Initial experience at IMSS]

pCONus2 device has been used in some countries as coadyuvant in the treatment of wide-neck bifurcation aneurysms with coils.

To present the first series of brain aneurysms treated with pCONus2 in the Mexican Institute for Social Security (IMSS).

We retrospectively present the first 13 aneurysms treated from October 2019 to February 2022 with pCONus2 device at a third level hospital.

6 aneurysms located at anterior communicating artery, 3 at middle cerebral artery bifurcation, 2 at internal carotid artery bifurcatión, and 2 at the tip of basilar artery were treated. Device deployment was performed without complications and it was possible to embolize aneurysms with coils in 12 patients (92%), while on an internal carotid bifurcation aneurysm (8%) there was an incident of a pCONus2 petal migration toward vascular lumen caused by coils mesh pressure, situation that was solved by placing an nitinol self-expandable microstent. In 7 cases (54%) we performed coiling technique after microcatheter passage through pCONus2, while in 6 cases (46%) we used the jailing technique without complications.

pCONus2 is a useful device for wide-neck bifurcation aneurysms embolization. In Mexico our experience is yet limited; however, the first cases have been successful. Furthermore, we showed the first cases treated using jailing technique. Much more cases are required in order to carry out a statistically conclusive analysis and to establish the effectiveness and safety of the device.