MEDICAL INSTRUMENT
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United States of America Patent
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Issued Date -
Nov 12, 2020
app pub date -
Jul 22, 2020
filing date -
Jul 21, 2015
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Abstract
A medical instrument of the present invention includes a hydrophilic processed portion on at least a portion of an outer surface of the instrument. The hydrophilic processed portion contains a hydrophilic polymer and an antibacterial agent, and a water contact angle of a surface of the hydrophilic processed portion is equal to or smaller than 30°. Provided that a silver content per unit area in the hydrophilic processed portion is P, and a silver ion amount per unit area measured by an extraction test described below is Q, P and Q satisfy the relationships of Formula (1) and Formula (2) shown below. Accordingly, the medical instrument has excellent antifogging properties and antibacterial properties and excellently retains the antibacterial properties.
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