BONE CEMENT INJECTION PUNCTURE NEEDLE
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United States of America Patent
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Issued Date -
Dec 27, 2012
app pub date -
Mar 7, 2011
filing date -
Mar 9, 2010
priority date (Note) -
Abandoned
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Abstract
An outer needle of a bone cement injection puncture needle has first side holes near the tip, and second side holes near the base. When an inner needle is removed from the outer needle and an inner tube is inserted into the outer needle in place thereof, a reduced-pressure passage is formed between the outer needle and the inner tube. When bone cement is injected into a bone, gas and liquid in the bone pass through the reduced-pressure passage and are discharged from the body, thereby preventing increased pressure in the bone. As a result, the bone cement can be prevented from leaking to outside of the bone.
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