A method of constructing an object data set of data elements representing a physical property is described, in which the construction of the object data set includes assigning attributes to respective data elements. In some embodiments a blood filtering system captures and removes particulates dislodged or generated during a surgical procedure and circulating in a patient’s vasculature. The extension portions andor the other interlocking mechanism extend into respective teeth associated with the horizontally opposed edges of the panel members for mating with the extension portions andor the other interlocking mechanism of another tie member associated with a similarly constructed ICF block positioned in vertical arrangement thereto. The end user can program in a large number of different conditions or schedules the end user finds desirable, plus the end user is advised of maintenance requirements or faults.