Abstract: An effective blood vessel diameter at a deployment site within a blood vessel may be determined using a measurement apparatus that includes an inflatable balloon. The measurement apparatus may be advanced to the deployment site and the inflatable balloon may be inflated in order to temporarily reshape the blood vessel at the deployment site to a more circular cross-sectional profile. A measurement pertaining to the effective vessel diameter may be obtained while the inflatable balloon remains inflated. The measurement may be obtained using an ultrasound catheter. The measurement may be obtained using fluoroscopy, for example.

Abstract: An effective vessel diameter of a blood vessel at a deployment site may be determined using a measurement apparatus that includes an expandable element that is moveable between a collapsed configuration for advancement and an expanded configuration for measurement. The measurement apparatus may be advanced to the deployment site with the expandable element in its collapsed configuration. The expandable element may be caused to expand from its collapsed configuration to its expanded configuration and one or more measurements pertaining to the expandable element in its expanded configuration may be obtained. The one or more measurements may be used to determine an effective vessel diameter at the deployment site.

Abstract: An apparatus for determining an effective diameter of a blood vessel at a deployment site includes an outer member defining a garage disposed within the outer member and an inner member slidingly disposed within the garage, the inner member adapted to be advanced distally from the garage in order to obtain measure a diameter of a blood vessel in which the apparatus is disposed. The inner member includes an elongate shaft and a biased member extending from the elongate shaft, the biased member adapted to extend radially outwardly from the elongate shaft when not constrained by being within the garage. The biased member may be visible via ultrasound imaging and/or fluoroscopic imaging.

Abstract: An illustrative mechanical thrombectomy system may comprise an outer catheter extending from a proximal end to a distal end and defining a first lumen extending therethrough and an inner sheath extending from a proximal end to a distal end and defining a second lumen extending therethrough. The inner sheath may be slidably disposed within the first lumen of the outer catheter. An inner shaft may be slidably disposed within the second lumen of the inner sheath and an expandable anchor mechanism may be coupled to the distal end region of the inner shaft. The expandable anchor mechanism may be configured to move between a collapsed delivery configuration and an expanded configuration.