Reciprocating Surgical Tool Actuation With Balanced Rotary Coupling
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing surgical tools lack a mechanism to efficiently convert rotary motion to reciprocating motion with improved drive characteristics, balance, and service life.
Innovation Solution
A reciprocating assembly with a rotary coupling mechanism that includes a rotating body and guide assemblies, converting rotary motion to reciprocating motion through opposing guide profiles on a wave disk or cylindrical body, ensuring balanced and extended service life.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional rotary to reciprocating conversion mechanism is used, then the surgical tool can perform reciprocating motion, but the drive characteristics and service life are insufficient due to imbalance and reactive forces
Solution Approach 1:
The patent employs counterbalancing weights integrated into the rotating body that offset the imbalance and reactive forces generated during reciprocating motion. These counterweights are strategically positioned to create opposing forces that neutralize the harmful vibrations and stresses, thereby extending service life and improving reliability of the surgical tool.
Solution Approach 2:
The patent utilizes a dynamically balanced rotating body with optimized mass distribution and moment of inertia characteristics. The design incorporates dynamic balancing principles to minimize vibrations and reactive forces during operation, allowing the system to maintain stable reciprocating motion while reducing harmful effects on the tool structure.
2Adaptability or versatility
If a simple rotary coupling mechanism is used, then the device structure remains simple, but drive characteristics are insufficient for diverse surgical applications
Solution Approach 1:
The patent designs a universal rotary coupling mechanism that can accommodate multiple surgical accessories and applications through a standardized interface. The rotating body incorporates adjustable guide profiles and interchangeable coupling elements that enable the same basic mechanism to perform diverse surgical functions, enhancing adaptability without proportionally increasing complexity.
Solution Approach 2:
The rotary coupling mechanism is divided into modular segments including separable guide assemblies, interchangeable coupling elements, and adjustable components. This segmentation allows for easy configuration changes to suit different surgical applications while maintaining a relatively simple base structure, resolving the contradiction between versatility and 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
The solution provides improved drive characteristics and extended service life by converting rotary motion to reciprocating motion with reduced imbalance and reactive forces, enhancing user satisfaction and tool performance.
Implementation Method 1
the rotating body may be rotated via a drive assembly of the surgical power tool and cause the reciprocating shaft to extend and retract as a result of a pushing and pulling force axially applied to the reciprocating shaft by opposing guide profiles
Data Source
AI summary
An actuation assembly for a reciprocating surgical tool includes a reciprocating shaft extending along a longitudinal axis and a rotating body operably connected to the reciprocating shaft. The rotating body forms opposing guide profiles defining an extension profile and a retraction profile of the reciprocating shaft. A rotation of the rotating body relative to the reciprocating shaft causes the opposing guide profiles to operably engage the reciprocating shaft causing the reciprocating shaft to extend responsive to the extension profile and retract responsive to the retraction profile along the longitudinal axis.