Characterization of a Novel High Internal Phase Pickering Emulsions Stabilized by Soy Protein Self-Assembled Gel Particles

In this paper, a novel high-internal-phase Pickering emulsion (HIPPE) prepared by acid-induced self-assembly SPI gel (A/S-SPIG) was investigated. The steady-state shear test results showed that all HIPPEs were typical shear thinning emulsion, which could form stable emulsion (0.2–1.2% SPI concentration). The network structure of HIPPE stabilized by A/S-SPIG particles (0.2–1.2% SPI concentration) was continuously enhanced with increasing SPI concentration. The high concentration of SPI particles increased the crystallization temperature of the stabilized HIPPE. Meanwhile, at a concentration of 1.2%, HIPPE has the best cohesive property and stability against delamination due to weakened mobility. In conclusion, A/S-SPIG was proved excellent HIPPE stabilized particle.

Microcatheter entrapment retrieval from Onyx embolization in brain arteriovenous malformations: A technical note

Objective Many techniques have been use for retrieval of an entrapped microcatheter during Onyx (eV3 Neurovascular) embolization of brain arteriovenous malformations (BAVMs). We report our technique that we term “pull-push-pull” that can be utilized as first management in retrieving the microcatheter. Method We analyzed a total of 37 patients that underwent BAVM embolization with either Onyx 18 or 34 at our institution. Standard embolization techniques were utilized with the use of Marathon (eV3 Neurovascular) microcatheter. When difficulty in retrieving the microcatheter arose, we used the “pull-push-pull” technique. The technique comprises the eV3 protocol of retraction. In addition, the microcatheter is stretched causing the Onyx cast to stretch in its inner core, creating a more thorough cohesive property amongst the Onyx mixture. Then the microcatheter is pushed back and to its point of embolization origin. Afterwards, retraction of the microcatheter is enabled as it can be easily dislodged from the cast. Multiple attempts can be repeated as needed. Result and discussion We had three patients that had difficulty with removal of microcatheter (8.1%). Utilization of the “pull-push-pull” technique was used on two of those patients. No neurological complication was observed with our technique. We believe the cohesive property of Onyx solution helps in the retrieval of the catheter by our method and technique. Conclusion We believe the “pull-push-pull” can be utilized and be an additional technique before attempting other catheter retrieval techniques in Onyx BAVM embolization.