Ultrasonic Bone Hole Formation in Knee Ligament Reconstruction
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Solution Overview
Problem
Current surgical methods for knee joint reconstruction, particularly in ligament reconstruction, face challenges in efficiently and precisely forming bone holes using existing tools, which can lead to increased surgical time and potential complications.
Innovation Solution
The use of an ultrasonic treatment device that applies ultrasonic vibration to the femur to cut and form predetermined depth bone holes, allowing for precise and efficient hole formation during ligament reconstruction procedures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional surgical tools are used to form bone holes, then the surgical procedure can be performed with standard equipment, but the surgical time increases and precision is reduced
Solution Approach 1:
The patent replaces conventional mechanical drilling tools with an ultrasonic treatment instrument that uses ultrasonic vibrations to form bone holes. The ultrasonic probe delivers high-frequency mechanical vibrations through the bone, causing controlled fracture and hole formation with greater precision and speed compared to traditional rotary drills.
Solution Approach 2:
The patent changes the operational parameters by using ultrasonic frequency vibrations (typically 20-100 kHz) instead of conventional rotational mechanical forces. This parameter change enables more precise control over bone cutting, reduces heat generation, and allows for faster hole formation with cleaner edges, directly addressing both precision and time concerns.
2Reliability
If conventional tools are used for bone hole formation, then standard surgical equipment suffices, but the risk of complications increases
Solution Approach 1:
By substituting conventional mechanical drilling with ultrasonic vibration-based bone cutting, the patent reduces complications such as thermal damage to surrounding tissues, bone dust generation, and instrument binding. The ultrasonic probe's oscillating motion creates cleaner cuts with less thermal effect, improving surgical reliability despite the increased device complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This method reduces surgical time and improves precision in forming bone holes, facilitating smoother ligament reconstruction and reducing the risk of complications by enabling precise dissection and hole formation within the knee joint.
Implementation Method 1
bringing a treatment portion of an ultrasonic treatment instrument into contact with the femur in the knee joint, and applying ultrasonic vibration from the treatment portion to the femur, thereby cutting and forming a first bone hole
Data Source
AI summary
A surgical procedure of preparing bone holes to fix an implanted tendon to a femur when performing reconstruction of a ligament in a knee joint, includes: bringing a treatment portion of an ultrasonic treatment instrument into contact with the femur in the knee joint, and applying ultrasonic vibration from the treatment portion to the femur, thereby cutting and forming a first bone hole from the inside of the knee joint to the femur in a predetermined depth.