9 results about "Permanent implant" patented technology

Systems for distracting a facet joint and positioning a permanent implant in the joint are disclosed. The implants serve to retain a distracted position of the facet joint which is achieved with positioning of the leading end of a distraction tool in the facet joint and then distracting or enlarging the joint a desired amount. The permanent implant could be part of the distraction mechanism which can be separated from the delivery tool once the joint has been distracted or an auxiliary implant may be positioned before the distraction mechanism is removed from the distracted joint. The permanent implants can be solid, mechanical devices that may have fixation means thereon to hold them in place or injected fluids such as hydrogels or fluids confined within balloons.

A broach (1) has a handle and a rod (4), and a detachable head (80, 100) which is configured for fitting in an intramedullary cavity so that it can be used as a trial implant or a permanent implant. The head has an articulating ball socket (87, 107) for connecting to a ball of a proximal implant component for the purposes of a trial during surgery or as a permanent implant. The fastener to attach the broach head to the rod is a threaded socket (86, 106) for threaded engagement with the distal end of the rod. The broach head may have features (120) which do not extend radially as much as the broaching teeth (103) to aid fixation when used as a permanent implant. In another example the head is a trial stem without broaching teeth.

The present invention relates to a medical device (1), comprising: a first component (10, 101, 115) comprising an electrically conducting contact surface (10a), a second component (11, 101, 111, 115) having an electrically conducting contact member (11a), and an electrically conducting connection device (2) electrically connecting the contact surface (10a) of the first component (10) to the contact member (11) of the second component (11). According to the present invention, the connection device (2) comprises a base portion (20) electrically connected to said contact member (11), a contact portion (22), and at least one spring (21) electrically connecting the base portion (20) to the contact portion (22), wherein the at least one spring (21) is tensioned and thereby presses a front side (22a) of the contact portion (22) against the contact surface (10a) so that the contact portion (22) permanently contacts the contact surface (10a).

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 invention provides a hot-melt drug release stent, and relates to the technical field of medical instruments. The hot melting coating is arranged on the bracket body; the medicine layer is arranged on the hot melting coating; the wrapping layer is arranged on the hot melting coating and wraps the medicine layer; a heating assembly is arranged in a cavity formed by the stent body, the heating assembly heats the stent body, and the resistance block transfers heat to decompose the hot melting coating so as to release medicine. According to the drug stent, the hot melting coating, the drug layer and the wrapping layer are arranged, the heating assembly is used for heating the resistance block, heat of the resistance block is conducted to the hot melting coating to promote decomposition of the hot melting coating, then the drug layer is released and makes direct contact with the lesion position, proliferation of cells at the lesion position is inhibited, and after the function is completed, the stent body of the drug stent can be withdrawn, so that the drug stent is convenient to use. And the implant is not left in vivo like a permanent implant for a long time, so that the risk of long-term foreign body reaction and complication is reduced.

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.

Systems for distracting a facet joint and positioning a permanent implant in the joint are disclosed. The implants serve to retain a distracted position of the facet joint which is achieved with positioning of the leading end of a distraction tool in the facet joint and then distracting or enlarging the joint a desired amount. The permanent implant could be part of the distraction mechanism which can be separated from the delivery tool once the joint has been distracted or an auxiliary implant may be positioned before the distraction mechanism is removed from the distracted joint. The permanent implants can be solid, mechanical devices that may have fixation means thereon to hold them in place or injected fluids such as hydrogels or fluids confined within balloons.

A broach (1) has a handle and a rod (4), and a detachable head (80, 100) which is configured for fitting in an intramedullary cavity so that it can be used as a trial implant or a permanent implant. The head has an articulating ball socket (87, 107) for connecting to a ball of a proximal implant component for the purposes of a trial during surgery or as a permanent implant. The fastener to attach the broach head to the rod is a threaded socket (86, 106) for threaded engagement with the distal end of the rod. The broach head may have features (120) which do not extend radially as much as the broaching teeth (103) to aid fixation when used as a permanent implant. In another example the head is a trial stem without broaching teeth.