Abstract: A method of printing radiopaque indicia on a medical device. The method includes applying radiopaque marking fluid to a surface of a plate comprising one or more etchings having a depth of at least 0.0001 inches, exposing the radiopaque marking fluid on the surface of the plate to air to allow the radiopaque marking fluid to achieve a sufficient level of tackiness, and transferring the radiopaque marking fluid to a medical device. The radiopaque marking fluid comprises a clear ink and tungsten particulates having a particulate size of more than one micron.

Abstract: This disclosure is directed to suspension assemblies for vehicles. More specifically, this disclosure is directed to secondary springs for suspension assemblies of vehicles. In some embodiments, a secondary spring can comprise a base, a tip, and one or more extension members positioned between the base and the tip that are configured to be removably coupled to the base and/or the tip to adjust a length of the secondary spring. In some embodiments a user can adjust the length of the secondary spring, so that the secondary spring is compatible with a given coil spring of the suspension assembly, by increasing or decreasing the number of extension members included in the secondary spring and/or by replacing one or more of the extension members with longer or shorter extension members.