Abstract: A multilayer capacitor includes a body including a plurality of dielectric layers and a plurality of internal electrodes stacked in a first direction, and external electrodes, wherein the body includes an active portion, a side margin portion covering at least one of a first surface and a second surface of the active portion opposing each other in a second direction, and a cover portion covering the active portion in the first direction, respective dielectric layers among the plurality of dielectric layers include a barium titanate-based composition, the dielectric layer of the side margin portion includes Sn, and a content of Sn in the dielectric layer of the side margin portion is different from that of Sn in the dielectric layer of the active portion, and the dielectric layer of the side margin portion includes at least some grains having a core-shell structure.

Abstract: The present invention discloses a device for aligning and guiding a femoral resection guide and a femoral implant impactor, whereby the femoral resection guide and the femoral implant impactor are aligned perpendicular to the mechanical axes of the coronal plane and sagittal plane of the femur at the bottom end of the femur, and are guided so as to be rotation-aligned and mounted in parallel with a condyle axis connecting the inner condyle and outer condyle.

Abstract: A femur alignment guide device, which can be mounted on the femur vertically to the mechanical axis based only on the mechanical axis without measuring the angles between the mechanical and anatomical axes which are different according to the photographing angle, is disclosed. The femur alignment guide device comprises a body having a pair of mounting holes formed transversely for mounting a femur front bone cutter and a femur bottom end cutter, and a pair of pinholes formed vertically for inserting the pin driven into the femur bottom end; and a pair of top surface adjusting means mounted on both sides of the body so as to make ascent and descent possible.