Counter-Oscillating Saw Blade Mount for Precise Bone Cutting
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Solution Overview
Problem
Surgical saws face challenges in applying high torque for precise cutting while preventing the object from oscillating in harmony with the saw, and existing solutions fail to provide a secure and independent connection mechanism for saw blades that can be easily removable and reusable.
Innovation Solution
A saw blade with a resiliently biased projection and a complementary angled attachment portion, along with a connection mechanism featuring a mounting member with a receiving surface and raised portion, allows for secure connection and easy removal, and a saw design with opposing blades oscillating at high torque and reduced speed to prevent object oscillation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If high torque is applied to the bone by the saw blade, then cutting precision is improved, but the object to be cut may oscillate in harmony with the saw
Solution Approach 1:
The patent employs counter-balanced oscillating saw blades where the momentum produced by one blade is offset by momentum produced by its counterpart cutting blade. This counterbalancing mechanism reduces mechanical vibration and prevents the bone from oscillating in harmony with the saw, thereby maintaining cutting precision while eliminating harmful oscillations.
2Loss of time
If disposable blades are used to avoid sterilization costs, then time and expense are reduced, but the connection mechanism must ensure secure attachment during use
Solution Approach 1:
The saw system is divided into separable components: a reusable saw body and disposable blades. This segmentation allows the blade to be independently replaced without sterilizing the entire saw, reducing time and expense. The connection mechanism includes a mounting member with receiving surface and raised portion that engages with the blade, ensuring secure attachment during use while enabling easy removal for replacement.
3Ease of operation
If the blade is made independently and removably connected to the saw, then blade replacement is simplified, but the connection mechanism must prevent blade loosening during cutting
Solution Approach 1:
The connection mechanism features a resiliently biased projection that dynamically adapts during operation. The projection can be deflected to allow blade insertion and removal, then automatically biases into a latching position to secure the blade during cutting. This dynamic behavior enables easy blade replacement while preventing blade loosening during the cutting procedure.
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
The solution enables high-torque cutting with reduced oscillation of the object, secure blade attachment, and easy blade replacement, enhancing cutting precision and efficiency while minimizing vibrations and sterilization costs.
Implementation Method 1
a projection that extends from the blade and is resiliently biased into a position in which it extends away from a surface of the blade
Data Source
AI summary
The present disclosure relates to a saw, comprising a drive, a first blade configured to oscillate about an axis perpendicular to a plane defined by a surface of the first blade, a second blade configured to oscillate about an axis perpendicular to the plane in a direction opposite to that of the first blade, and wherein gearing is provided between the drive and the first and second blades to reduce the speed transmitted from the drive to the blades. A saw blade, a connection mechanism for connecting a blade to a saw and associated methods are also provided.