Capillary, capillary polishing method, and capillary polishing apparatus
AssigneeFujitsu Limited
InventorsJun Sasaki, Akihiko Yabuki
Life of this patent
Estimating the term…
Abstract
A tip of a capillary used for microinjection is polished on a plurality of sides by using a polishing plate having a surface roughened by dry etching. A first side of the tip is placed on the polishing plate at a predetermined angle and with a predetermined amount of pressing. The polishing plate is repeatedly moved at a predetermined speed by a predetermined distance such that the first side is polished. The capillary is then rotated around an axis thereof to obtain a second side of the tip, and the process of polishing is repeated for the second side.
Claims18
A capillary polishing method of polishing a tip of a capillary for microinjection, the method comprising:
- first-polishing a first side of the tip by placing the tip on a polishing plate at a predetermined angle, pressing the tip against the polishing plate by a predetermined amount, and repeatedly moving the polishing plate at a predetermined speed by a predetermined distance, the polishing plate having a surface roughened by dry etching;
- rotating the capillary around an axis thereof to determine a second side of the tip;
- and
- second-polishing the second side by placing the tip on the polishing plate at a predetermined angle, pressing the tip against the polishing plate by a predetermined amount, and repeatedly moving the polishing plate at a predetermined speed by a predetermined distance.
A capillary polishing apparatus that polishes a tip of a capillary for microinjection, the capillary polishing apparatus comprising:
- a polishing mechanism that includes a polishing plate having a surface roughened by dry etching;
- and
- a capillary holding mechanism that holds the capillary, wherein
- the polishing plate and the capillary holding mechanism move relative to each other at a predetermined speed such that the tip is placed on the polishing plate at a predetermined angle and pressed against the polishing plate by a predetermined amount, and
- the capillary holding mechanism rotates the capillary around an axis of the capillary after the tip is polished.
A capillary for microinjection having a tip from which a solution is injected into a target object, wherein
- the tip is polished on a plurality of sides, and a curvature of the tip is less than or equal to 0.2 μ.
Dependencies are inferred from the claim text.