Ono & Co., Ltd.

Akita University

Nozomu Matsumoto

Matsumoto, Nozomu

Hisayuki Sugiyama

Hidenori Ono

Toru Matsumoto

Taku Sugawara

Kazuo Mizoi

Naoki Higashiyama

There are provided a surgical jig () which is directly used during surgery to make it possible to accurately recognize a position where a recess () is to be formed in the surface of a surgical target bone () of a patient; and a verification jig () which is directly used during surgery to make it possible to precisely verify whether or not the recess () formed in the surface of the surgical targeted bone () of the patient is of a required shape. The surgical jig () has an inner surface () matching the surface shape of the surgical target bone () of the patient, and a penetrating opening () formed in correspondence with a site where the recess () is to be formed. The verification jig () has a protrusion () protruding from an inner surface () thereof in correspondence with the recess () to be formed.

Surgical jig, verification jig, and methods for producing these jigs

A bone fixing screw template is a combination of: a template body (A) integrally constituted by a fitting section (), which has an inner surface joining and fitting face-to-face to a three-dimensional-shaped surface of a bone region, and a cylindrical spacer tube guide cylinder () protruding while being pointed in a direction coaxial with the direction of insertion of the fitting section and a medical screw; and a cylindrical spacer tube (B) sliding in contact with the inner wall of the cylindrical spacer tube guide cylinder (), the inner diameter of the cylindrical spacer tube (B) being formed to allow a drill to be slidable in the cylindrical spacer tube (B). By using the template, surgery requiring proficiency in fixing the bone region by tightening medical screws can be performed reliably and easily.

Bone fixing screw template and method for producing same

Provided are: a screw guide template, screw guide template system, and drilling method whereby a hole can be drilled in an accurate position of a member to be drilled, in an accurate direction; and a spinal fixation method whereby a spinal fixation screw can be inserted into an accurate position in an accurate direction. The screw guide template () comprises: a close-contact face () to be closely contacted to the member; and a through hole () having one opening () on the close-contact face; the close-contact face has a shape in male-female relation with a surface shape () of the member including a portion () to be drilled; and when the close-contact face is closely contacted to the portion to be drilled, the opening and portion to be drilled overlap each other so that the through hole is coaxial with the hole to be drilled by the drilling means.

Screw guide template, screw guide template system, drilling method, and spinal fixation method

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Kanagawa, Japan

Hisayuki Sugiyama