In part, the disclosure relates to an aspirator having a handle that includes a suction connector extending from a proximal end face, a substantially cylindrical sleeve mount having an outer surface and a shoulder. A tubular member defining a bore and having flared end disposed in a suction head having one or more cantilevered protuberances can extend from the sleeve mount. The substantially cylindrical sleeve mount is in relief with respect to the shoulder and extends distally therefrom. The substantially cylindrical sleeve mount defines an aperture. The suction connector bore, bore of tubular member, inner cavity of handle and suction head bore define a fluid flow path or cavity. The aspirator can include a sleeve that receives the suction head. The sleeve engages and interferes with the sleeve mount. The suction head and sleeve's inner wall have one or more engineered clearances between them to enhance assembly.