JP2007029566A5 - - Google Patents

Claims (16)

A fixing screw for fixing a transplanted bone or a bone fragment that has been cut, and the fixing screw includes: a screw portion provided on a side surface of the fixing screw; and a search member for searching for the fixing screw. A search member insertion portion in which a distal end portion can be inserted from the proximal end side of the fixing screw, and a distal end portion of the search member provided on the proximal end side of the insertion portion so as to communicate with the insertion portion. For fixing, comprising: a guiding recess for guiding; and a rotating tool mounting portion provided at a base end portion of the fixing screw to which a rotating tool for rotating the fixing screw is mounted. screw. The fixing screw according to claim 1, wherein the fixing screw is for fixing an acetabular bone fragment to the pelvis at the time of hip acetabular rotational osteotomy. The fixing screw has a threaded shank with the screw portion, and a screw head provided with said guiding recess and the rotary tool mounting portion, the inner diameter of the proximal end of the guiding recess, the screw The fixing screw according to claim 1 or 2, wherein the fixing screw is made larger than an outer diameter of the shaft portion. The fixing screw according to any one of claims 1 to 3, wherein the guide recess includes a reduced diameter portion that decreases in diameter toward a distal end side. The fixing screw according to claim 4, wherein the reduced diameter portion is a curved concave portion whose inner surface is reduced in a curved shape toward the distal end side. The fixing screw according to claim 5, wherein the curved concave portion is a substantially hemispherical concave portion or a substantially semielliptical spherical concave portion that decreases in diameter toward a tip end side. The fixing screw includes a screw shaft portion including the screw portion, and a screw head including the guide recess and the rotating instrument mounting portion, and the insertion portion communicates with the guide recess and the screw. The fixing screw according to any one of claims 1 to 6, wherein the fixing screw extends in the shaft portion toward the distal end side. The fixing screw according to any one of claims 1 to 7, wherein the rotating device mounting portion is provided on an inner surface of a base end portion of the guide recess. The fixing screw according to any one of claims 1 to 8, wherein the rotating device mounting portion is a fitting portion that is provided on an inner surface of the guiding concave portion and is fitted to a distal end portion of the rotating device. The fixing screw according to claim 9, wherein the fitting portion is one or a plurality of grooves provided on the inner surface of the guide recess and extending in the vertical direction. The fixing screw includes a screw shaft portion including the screw portion, and a screw head including the guide recess and the rotating instrument mounting portion, and an inner diameter of the proximal end portion of the guide recess is the screw shaft. The fixing screw according to any one of claims 1 to 10, wherein the fixing screw is 1.0 to 5.0 mm larger than a part outer diameter. The fixing screw according to any one of claims 1 to 11, wherein an inner diameter of a base end portion of the guide recess is 5.0 to 11.0 mm. 13. An extraction tool for extracting the fixing screw according to any one of claims 1 to 12, wherein the extraction tool has a tip portion that can be inserted into the search member insertion portion of the fixing screw. And a guide member that is guided directly or indirectly by the search member having a distal end inserted into the search member insertion portion and can be inserted into the body, and for forming a passage for the fixing screw to be taken out of the body. A passage-forming sleeve, a resection sleeve guided by the passage-forming sleeve and insertable into the body, capable of resecting bone or tissue near the fixation screw, and insertable into the resection sleeve; A tool for removing a fixing screw, comprising: a rotating device for rotating the fixing screw, the tip of which can be attached to a rotating device mounting portion of the fixing screw. The fixing device according to claim 13, wherein the rotating device has a separation preventing mechanism that prevents the rotating device from being detached from the fixing screw in a state where the rotating device is attached to the fixing screw. Screw removal tool. 15. The removal of the fixing screw according to claim 14, wherein the separation preventing mechanism is an enlargement mechanism capable of expanding the distal end portion in a radial direction in a state where the distal end portion of the rotating device is attached to the inner surface of the guide recess. Tools. The removal tool can be inserted into the excision sleeve, and includes a removal tool having a removal portion for removing bone or tissue in the guide recess of the fixing screw at a distal end portion. A tool for removing the fixing screw according to any one of Items 15 to 15.