Absorbable heart occluder choke membrane and preparation method thereof

The invention belongs to the technical field of medical instruments, and relates to an absorbable heart occluder choke membrane and a preparation method thereof. The flow blocking film is of a multi-layer degradable polymer composite film structure, the multi-layer degradable polymer composite film...

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Bibliographische Detailangaben
Hauptverfasser:	SHI JIANHUA, LI WENMING, ZHU XIAOJIE, WANG NING, YAO JIECHEN, DONG HAO, LIU YANG, ZHANG SUWEN, ZHU AICHEN, MA LIXIA
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS, ORSURGICAL ARTICLES DIAGNOSIS DISINFECTION, STERILISATION, OR DEODORISATION OF AIR HUMAN NECESSITIES HYGIENE IDENTIFICATION LAYERED PRODUCTS LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT ORNON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS, OR SURGICALARTICLES MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OFARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES ORRIBBONS MEDICAL OR VETERINARY SCIENCE METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS INGENERAL NATURAL OR ARTIFICIAL THREADS OR FIBRES PERFORMING OPERATIONS PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCESIN A PLASTIC STATE SPINNING SURGERY TEXTILES TRANSPORTING WORKING OF PLASTICS WORKING OF SUBSTANCES IN A PLASTIC STATE, IN GENERAL
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Beschreibung
Zusammenfassung:	The invention belongs to the technical field of medical instruments, and relates to an absorbable heart occluder choke membrane and a preparation method thereof. The flow blocking film is of a multi-layer degradable polymer composite film structure, the multi-layer degradable polymer composite film structure sequentially comprises a first hydrophilic layer, a first transition layer, a compact layer, a second transition layer and a second hydrophilic layer, and the first hydrophilic layer, the first transition layer, the second transition layer and the second hydrophilic layer are all of loose and porous layered structures. The compact layer is of a compact layered structure, the first hydrophilic layer and the second hydrophilic layer are made of natural polymers, the first transition layer and the second transition layer are made of natural polymers and synthetic polymers in a mixed mode, and the compact layer is made of synthetic polymers. The absorbable heart occluder choke membrane has good hydrophilicity