Sanchez Point

Last edit by Alaric Steinmetz on

The Sanchez point serves as the occipital entry point for a puncture of the temporal horn of the lateral ventricle.

Definition

The Sanchez point is located 5.6 cm above and then 2.7 cm lateral to the inion. To perform a ventricular puncture through the Sanchez point, the catheter trajectory should aim 5° lateral to the parasagittal plane and 30° caudal to the orbitomeatal line[^1]. The Sanchez point was first described in 2014 by Sanchez et al.[^2] Studies aiming at ventricular puncture using the Sanchez point have not yet been published.

Illustration

Schematic illustration of the Sanchez point
Schematic illustration of the Sanchez point for ventricular puncture. Figure adapted from Morone PJ et al. (2020).