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US 10,368,895 B2Granted
Method for replacement arthroplasty
AssigneeOlympus Corporation
InventorManabu Ishikawa
Life of this patent
Estimating the term…
Abstract
A method for replacement arthroplasty of an embodiment is losing precise cutting and surface unevenness and performing the smoothening treatment to the part of the joint region which the component of the artificial joint attaches, using an ultrasonic treatment device, and exact processing can be performed, dimensional processing accuracy also becomes high, and bonding surfaces stick it without a crevice, and it controls generating of wear debris by friction.
Claims7
A method for replacement arthroplasty comprising:
- determining on a femur a position of a first attaching surface to be formed in the femur to receive a femur implant under a situation in which a perfusion circulates;
- forming the first attaching surface in the femur by using a treating section disposed at a distal end of a probe of an ultrasonic treatment device and ultrasonically vibrated under the situation in which the perfusion circulates;
- fixing the femur implant to the first attaching surface of the femur;
- forming a second attaching surface in a tibia of a joint with the femur to receive a base plate by using the treating section of the probe of the ultrasonic treatment device under the situation in which the perfusion circulates;
- performing a reaming treatment, as a first treatment for the second attaching surface, by using the treating section of the probe of the ultrasonic treatment device under the situation in which the perfusion circulates;
- performing a rasping treatment, as a second treatment for the second attaching surface treated by the reaming treatment, by using the treating section of the probe of the ultrasonic treatment device under the situation in which the perfusion circulates;
- forming a plurality of concave regions in the second attaching surface by using a pointed end portion disposed at the distal end of the probe of the ultrasonic treatment device and ultrasonically vibrated under the situation in which the perfusion circulates;
- and
- fixing the base plate to the tibia by fitting anchors of the base plate into the plurality of concave regions.
6 more elements
A method for replacement arthroplasty comprising:
- determining a position on a femur under a situation in which a perfusion circulates;
- removed from a hip joint for cutting off a bone head of the femur;
- cutting off the bone head at the position by use of a treating section disposed at a distal end of a probe of an ultrasonic treatment device and ultrasonically vibrated, forming a cut surface on the under the situation in which the perfusion circulates;
- performing a flattening treatment on the cut surface under the situation in which the perfusion circulates;
- forming an attaching hole in the femur for a femur component to be inserted by use of the treating section of the probe of the ultrasonic treatment device under the situation in which the perfusion circulates;
- and
- inserting and fixing a tip of a stem of the femur component including a bone head ball into the attaching hole.
4 more elements
Dependencies are inferred from the claim text.