A medical device including a medical device thin metallic film component (such as a thin metallic angioplasty balloon), with perforations therethrough, attached to a medical device polymeric component (e.g., a polymeric tubular catheter) abutting the thin metallic film component. The medical device also includes a polymeric sleeve covering the perforations and at least a portion of the polymeric component abutting the thin metallic film component. Moreover, the polymeric sleeve intrudes into the perforations and joins the thin metallic film component to the polymeric component. A method for attaching a medical device thin metallic film component (for example a thin metallic film angioplasty balloon) to a medical device polymeric component (e.g., a tubular polymeric catheter) includes forming a plurality of perforations in the medical device thin metallic film component and abutting the medical device polymeric component against the medical device thin metallic component. Subsequently, a polymeric sleeve is applied over the perforations and at least a portion of the abutted medical device polymeric component. Heat and/or pressure is then applied to the polymer sleeve in a manner that results in the polymer sleeve being joined to the medical device thin metallic film and the portion of the abutted medical device polymeric component and the polymer sleeve flowing into the perforations, thereby attaching the medical device thin metallic film component to the medical device polymeric component.
