Ultrasound device and ultrasound device system used for anchor fixation and anchor fixation method using ultrasound device

Abstract

A medical ultrasound device includes: an ultrasound generator and an elongated probe. A cross-sectional surface of the probe at a distal end to which ultrasound oscillation is propagated is perpendicular to a longitudinal direction of the probe, and the cross-sectional surface has a shape identical to a shape of a cross-sectional surface of an anchor to form, in a bone, a bottomed hole for placing the anchor and having a shape to prevent rotation of the anchor in the bottomed hole. An area of the cross-sectional surface of the probe at the distal end is larger than an area of a cross-sectional surface of the probe at a proximal end. The distal end includes a treatment portion that expands outward relative to the proximal end and that is formed in a first direction perpendicular to the longitudinal direction and in a second direction different from the first direction.

What is claimed is: 
     
         1 . A medical ultrasound device being used for fixation and comprising:
 an anchor;   an ultrasound generator configured to generate ultrasound oscillation; and   an elongated probe including a proximal end and a distal end, the ultrasound oscillation being propagated from the ultrasound generator to the proximal end, the ultrasound oscillation being propagated through oscillation from the proximal end toward the distal end in a longitudinal direction of the probe, wherein:   the distal end of the probe includes a treatment portion that is configured to cut the bone with the ultrasound oscillation to form a bone hole;   the anchor is a shape identical to a shape of the formed bone hole; and   the shape of the bone hole and a formation direction in which the bone hole is formed are provided such that when the anchor is placed and fixed in the formed bone hole, one surface of the anchor is disposed in a direction that intersects with a tension direction applied to the anchor.   
     
     
         2 . The ultrasound device according to  claim 1 , wherein a shape of a cross-sectional surface of the probe has one or more angles. 
     
     
         3 . The ultrasound device according to  claim 1 , wherein a shape of a cross-sectional surface of the probe has a curve. 
     
     
         4 . The ultrasound device according to  claim 1 , wherein the treatment portion extends outward relative to the proximal end in a first direction that is perpendicular to the longitudinal direction and a second direction that is different from the first direction. 
     
     
         5 . An ultrasound device system comprising:
 an ultrasound device configured to form a recessed part in a bone with ultrasound oscillation;   an anchor that is configured to be fixed in the recessed part of the bone; and   an anchor fixing tool that includes a retaining part configured to retain the anchor, the anchor fixing tool being configured to rotate and fix the anchor in the recessed part formed in the bone, wherein:   the ultrasound device includes:
 an ultrasound generator configured to generate the ultrasound oscillation; 
 a probe having a proximal end and a distal end, the ultrasound oscillation being propagated from the ultrasound generator to the proximal end, the ultrasound oscillation being propagated through oscillation from the proximal end toward the distal end in a longitudinal direction of the probe; and 
 a treatment portion that is provided at the distal end, the treatment portion being configured to form the recessed part of the bone; 
   a cross-sectional surface of the probe at the distal end that is perpendicular to the longitudinal direction, the cross-sectional surface having a shape identical to a shape of a cross-sectional surface of the anchor, the probe being configured to form a bottomed hole in the bone for placing the anchor;   an area of the cross-sectional surface of the probe at the distal end is larger than an area of a cross-sectional surface of the probe at the proximal end;   the treatment portion of the ultrasound device is formed in a first direction perpendicular to the longitudinal direction and in a second direction different from the first direction;   the anchor having a shape corresponding to a shape of the recessed part of the bone; and   the shape of the recessed part of the bone and a formation direction in which the recessed part of the bone is formed are provided such that when the anchor is placed and fixed in the formed bone hole, one surface of the anchor is disposed in a direction that intersects with a tension direction applied to the anchor.   
     
     
         6 . An anchor fixation method using an ultrasound device, the method comprising:
 pressing a distal end of an elongated probe against a bone;   oscillating the probe with ultrasound waves and propagating oscillation of the ultrasound waves toward the distal end of the probe along the longitudinal direction;   crushing the bone with a surface of the probe in contact with the bone and forming a bone hole; and   placing and fixing an anchor in the formed bone hole; wherein:   the anchor is formed in a shape identical to a shape of the formed bone hole; and   the shape of the bone hole and a formation direction in which the bone hole is formed are provided such that, when the anchor is placed and fixed in the bone hole, one surface of the anchor is disposed in a direction that intersects with a tension direction applied to the anchor.