Provided is a manufacturing apparatus for a carbon nanotube, including: at least two electrodes whose tips are opposed to each other, and a power supply that applies a voltage between the two electrodes to generate discharge plasma in a discharge area between the two electrodes. The light outgoing surface of the light guiding member is formed in a dissimilar shape with an image display region of the reflection type display device, and a region irradiated with light in the image display region of the reflection type display device is formed smaller than the image display region. Also disclosed are hydrogel coated orthopedic fastener devices in the form of a K-wire or bone screw, a method for stabilizing a fractured long bone fracture by inserting an orthopedic fastener into the medullary canal of the bone and a kit for fastener implantation. The server may control coupon distribution to any of a variety of device types, including personal computers, mobile devices, stand-alone printing devices, and in-store kiosks, the clients at some of which may be pre-authorized to print coupons. The ceramic particles have an average particle size of 20 to 50 \u03bcm, and a portion of the outer wall positioned on an outer side of a center portion of the outer wall in its thickness direction has a porosity lower than porosity of the center portion.