3 results about "Permanent implant" patented technology

The application discloses a novel blood flow guiding device, and belongs to the technical field of medical devices. The device comprises a net tube-shaped stent woven by a plurality of degradable wires, wherein the degradable wires comprise at least one of Mo-14Re wires, Mo-50Re wires, magnesium alloy wires, zinc alloy wires and iron-based alloy wires; the degradable wires comprise first weaving wires and second weaving wires with different degradation speeds to realize phased degradation and functional transition; the stent body in the middle of the net tube-shaped stent has a grid density of not less than 10 per square millimeter to effectively interfere with blood flow. The blood flow guiding device has good developing property and controllable degradability, can effectively reduce the risk of occlusion of branch blood vessels while providing sufficient supporting force to promote endothelialization, and finally realizes complete degradation, thereby avoiding long-term complications of permanent implants.

The present invention relates to a method for forming a header (1) on a housing (2) of an implantable medical device (100), the method comprising: providing a housing (2) having a surface (2a) to which the header (1) is to be connected, wherein the surface (2a) is subjected to a pre-treatment to achieve a pre-treated surface (2a), the pre-treatment comprising applying an alkoxysilane to the surface (2a), arranging the housing (2) with respect to a mold (6) for injection molding such that the pre-treated surface (2a) delimits a cavity (60) of the mold (6), and injection molding of at least a portion of the header (1) by filling the cavity (60) with a thermoplastic material, such that the thermoplastic material bonds to the pre-treated surface (2a).

The application relates to an implant-free shunt stoma system and belongs to the technical field of medical devices. The system can puncture the tissue wall between the coronary sinus and the left atrium through a puncture device to establish an initial shunt passage. The puncture device is integrated with a puncture catheter sheath, a support assembly and a guide. The support assembly extends from the second opening of the puncture catheter sheath and abuts against the cavity wall on one side of the coronary sinus. The support assembly can stably push the first opening on the other side of the puncture catheter sheath towards the wall of the target puncture site in the narrow cavity of the coronary sinus, ensures that the subsequent puncture guide wire punctures at the correct angle and position, and lays a foundation for the introduction of the subsequent shunt device. The system does not leave an implant in the body during the puncture shunt operation, thereby avoiding the risks of embolism, wear and tear, poor endothelialization and other complications caused by permanent implants.