EXTERIOR ANTIMIGRATION REFINEMENTS FOR SELF-CLEANING INDWELLING THERAPEUTIC ARTICLES

摘要

an outer channel (1847 - 1849), a catheter is used to capture food by microbial mucus in the body of a patient. energy, in the form of an electrical or radioactive material or a vibration propagation, is brought to the grooves, from a source (23) located outside of the body.the energy invalid microorganisms and then imprisoned in the debris of grooves. the depth of the grooves, the geometry of the interface and, in the case of a vibrational energy, the frequency of vibration, are selected to minimize the production of energy in the tissue of the patient.a vacuum is applied through a passage opening (18) or auxiliary (or, in some drainage catheters, intermittently through the passage from the main drain itself) to extract and remove the debris resulting in grooves.the circumferential grooves (848) could be used to prevent the movement in the longitudinal direction, the longitudinal grooves to prevent the formation of continuous circumferential layers of contaminants, or spiral grooves to increase the length of (847) the migration path along the length of the catheter.