TISSUE DRILLING TOOL AND BIOPSY SYSTEM

WIPO Patent Application WO/2005/027748

A1

A tissue drilling tool capable of drilling a tissue to thereby make a hollow large enough to effect inspection or treatment; and a biopsy system for harvesting a tissue in an amount sufficient for inspection. In particular, a tissue drilling tool comprising an inner stick for drilling a tissue and an outer pipe in which the inner stick is inserted, the tissue drilling tool adapted to, after tissue drilling, permit removal of the inner stick and insertion of another instrument, wherein the inner stick comprises a guide needle passing through as a core in the longitudinal direction, a dull tip and a taper portion tapering over a given length from the tip while the outer pipe is provided at its distal end with an opening for exposing the taper portion of the inner stick so that when the inner stick is inserted in the outer pipe, the surface of the taper portion of the inner stick and the outside surface of the outer pipe are flush. Further, there is provided a biopsy system wherein a biopsy needle for partial tissue collection is jointly used.

IZUMI YOTARO (JP)
KAWAMURA MASAFUMI (JP)
KOBAYASHI KOICHI (JP)
NAKATSUKA SEISHI (JP)
NAKANO KEIKO (JP)

PCT/JP2004/013562

March 31, 2005

September 16, 2004

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UNIV KEIO (JP)
IZUMI YOTARO (JP)
KAWAMURA MASAFUMI (JP)
KOBAYASHI KOICHI (JP)
NAKATSUKA SEISHI (JP)
NAKANO KEIKO (JP)

A61B10/02; A61B10/00; A61B17/34; (IPC1-7): A61B10/00

WO2001070114A1

2001-09-27

JPH0592011A	1993-04-16
JPH05337127A	1993-12-21
JPH09164146A	1997-06-24
JPS5616007U	1981-02-12
US4978334A	1990-12-18
JPH1033546A	1998-02-10
JPH1189851A	1999-04-06

ISSHIKI & CO. (12-7 Shinbashi 2-chom, Minato-ku Tokyo 04, JP)

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