Biocorrodable implant in which corrosion may be triggered or accelerated after implantation by means of an external stimulus

The implant has a base body completely or partially composed of a biocorrodable metallic material (300). The base body exhibits coating with a protective layer i.e. unperforated water-tight layer, that is not biocorrodable. Control elements are designed such that the protective layer in combination...

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Bibliographische Detailangaben
Hauptverfasser:	Dörr, Thomas, Borck, Alexander
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	BANDAGES, DRESSINGS OR ABSORBENT PADS CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF,TUBULAR STRUCTURES OF THE BODY, E.G. STENTS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR FILTERS IMPLANTABLE INTO BLOOD VESSELS FIRST-AID KITS FOMENTATION HUMAN NECESSITIES HYGIENE MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES PROSTHESES TREATMENT OR PROTECTION OF EYES OR EARS
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Beschreibung
Zusammenfassung:	The implant has a base body completely or partially composed of a biocorrodable metallic material (300). The base body exhibits coating with a protective layer i.e. unperforated water-tight layer, that is not biocorrodable. Control elements are designed such that the protective layer in combination with the control elements completely or partially encloses the base body so as to be impermeable to body medium. The layer is convertible into a form that is permeable to the medium based on a change in shape of the control elements to be regulated and/or controlled by an external stimulus. The external stimulus is selected from a group consisting of temperature change, electromagnetic radiation, high-frequency radiation (RF), an ultrasound signal, ionizing radiation, magnetic field and light. The control elements comprise hydrogel (330, 360) whose swelling capability is varied depending on a function of temperature, and exhibits a shape memory polymer.