Needle for living body, tissue-sampling device and process for sampling tissue
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United States of America Patent
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Jul 2, 2013
Grant Date -
Dec 23, 2010
app pub date -
Jun 15, 2010
filing date -
Jun 17, 2009
priority date (Note) -
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Abstract
This invention provides a needle for a living body and a process for sampling a tissue with the needle. The needle and the process are used for harvesting a tissue sample from a living body with minimal damage. The needle is made of ceramics, and is provided with a sampling hole for aspirating a sample and with a cooling hole for supplying cooling gas. The holes penetrate through in the longitudinal direction, and have openings on a pricking-end surface of the needle. For the purpose of cutting off the tissue sample, the pricking-end surface is provided with a cutting part positioned between the openings. When the needle is pricked into a body, a tissue is aspirated through the sampling hole while cooling gas is being supplied through the cooling hole. Thus, the tissue is partly frozen or semi-frozen and cut off with the cutting part to harvest by aspiration.
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