PROBE UNIT, TREATMENT TOOL AND TREATMENT SYSTEM

Title:

PROBE UNIT, TREATMENT TOOL AND TREATMENT SYSTEM

Document Type and Number:

WIPO Patent Application WO/2015/045438

Kind Code:

A1

Abstract:

This probe unit (31) is provided with a probe (26), a sheath (33) and a knob unit (45). The probe (26) is for cutting a bone (12), and ultrasonic vibration is transmitted to said probe from an ultrasonic vibrator (36). The sheath (33) is a tube with an ovular cross-sectional shape and surrounds the probe (26). Said oval has a major axis (L) and a minor axis (S). The knob (45) is provided at the base of the sheath (33). The sheath (33) is inserted between the first bone (12) and a second bone (13) of a joint. Then, the minor axis (S) is positioned between the bones (12, 13). When the sheath (33) is rotated 90° about the major axis (C) through operation of the knob (45), the major axis (L) is positioned between the bones (12, 13), increasing the space between the bones (12, 13). Thus, it is possible to secure sufficient space for treating the bone (12). Instead of the ovular cross-sectional shape, the sheath (33) may have an expansion member (51) that is an annular balloon, or linear dilator (52).

Inventors:

YACHI CHIE (JP)
ISHIKAWA MANABU (JP)
TOKUNAGA KOKI (JP)

Application Number:

PCT/JP2014/054466

Publication Date:

April 02, 2015

Filing Date:

February 25, 2014

Export Citation:

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Assignee:

OLYMPUS MEDICAL SYSTEMS CORP (JP)

International Classes:

A61B17/56

Foreign References:

JPH03146047A	1991-06-21
US4545374A	1985-10-08
US5342384A	1994-08-30
US20050209627A1	2005-09-22
US20120130192A1	2012-05-24
US20040181273A1	2004-09-16
JP2008119250A	2008-05-29

Other References: