barb-wired microneedle made of single crystalline silicon and microbiopsy method and medical water injection method using the same

摘要

The present invention discloses a single crystal silicon microneedle having a ferrowire structure, a biopsy method and a drug injection method using the same. According to this, the microneedle is made of a single crystal silicon material, and comprises a body portion, one or more extension portions integrally extending on the side of the body portion, and a protrusion integrally protruding on both sides of the extension portion. The surface of the body portion is formed with a drug reservoir of the groove shape for storing the drug. A fluid passage is formed in the extension portion and the body portion to communicate with the drug reservoir. The protrusions may have various shapes such as a wing shape, a semicircle, a rectangle, a triangle, and the like so as to easily sample a tissue from a living body. Therefore, the microneedle can simplify the biopsy process because the microneedle can be easily sampled by the protrusion by inserting the extension into the tissue for biopsy and then performing a simple process of separating the tissue from the tissue. have. In addition, drugs of the drug reservoir can be injected into the tissues through the fluid passage, thereby treating lesions of the tissues.