Laser hand piece

Claim 1

A laser hand piece for supplying laser light to a body part for cutting and drilling the same, comprising: a shank having a distal end; fiber holder means secured to said shank at the distal end thereof, said fiber holder means having a distal end; an optical fiber extending through said shank and said fiber holder means and terminating at the distal end of said fiber holder means, said optical fiber being adapted to receive said laser light from laser light transmission means; a head including laser light converging means for converging laser light from said optical fiber onto said body part; and head attachment means secured to the distal end of said shank for releasably attaching said head to said shank in surrounding relation to said fiber holder means, said head attachment means including an annular guide hole formed adjacent the distal end of said shank and which extends axially in line in the direction of the center line of said fiber holder means, a front end guide hole extending radially outward of the front end of said annular guide hole, a rear end guide hole which extends radially outward of the rear end of said annular guide hole, a slider slidably positioned in said annular guide hole and having leading and rear inclined ends, an engaging member slidably positioned in said front end guide hole and which engages with said inclined leading end of said slider, an arresting member slidably positioned in said rear end guide hole and which engages with said inclined rear end of said slider, an attachment ring positioned around said rear end guide hole, a hole engageable with said arresting member formed in an inner wall surface of said attachment ring, and a circumferential groove formed in an inner wall surface at the proximal end of said head in surrounding relation to said front end guide hole.