| 摘要 |
An ice tip is placed on the front end of a hypodermic needle to cool the flesh during insertion. The ice tip front end is sharp, for penetration, and the rear is provided with a recess, for reception of a hypodermic needle front end. The mold for forming the ice tip can be cooled by a cryogenic fluid being conducted into a main mold surrounding a tip forming heat conducting mold that is used to form the ice tip pointed front end and the recessed rear end.
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