Surgical Tool Coupling Assembly With Spring-Locked Torque Transfer
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Solution Overview
Problem
Conventional handheld surgical instruments lack efficient mechanisms for securely attaching and transferring torque to surgical accessory tools, leading to potential wear and inefficiencies in surgical procedures.
Innovation Solution
A surgical assembly with a driving member and lock assembly that includes a retention member and biasing member to securely attach and transfer torque to surgical accessory tools, featuring a receiving bore, opening, and cavity configuration that allows for easy attachment and secure engagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional attachment mechanisms are used, then the device structure is simple, but the torque transfer efficiency and secure attachment are insufficient
Solution Approach 1:
The attachment mechanism is divided into distinct functional components: a retention member with engagement features, a receiving bore with corresponding engagement surfaces, and a lock assembly. This segmentation allows each component to perform its specific function efficiently while maintaining overall system reliability for secure attachment and torque transfer.
2Power
If conventional attachment mechanisms are used, then the device complexity is low, but the torque transfer efficiency deteriorates
Solution Approach 1:
The retention member and receiving bore incorporate curved engagement surfaces that conform to each other, creating optimal contact areas for torque transfer. The engagement features include rounded edges and conforming surfaces that distribute stress evenly, enhancing power transmission efficiency while managing the complexity through elegant geometric design.
3Reliability
If secure engagement features are added, then the attachment reliability improves, but the ease of operation deteriorates
Solution Approach 1:
The retention member is pre-configured with engagement features that automatically align with corresponding features in the receiving bore when the accessory tool is inserted. The biasing member pre-loads the retention member, so that upon insertion, engagement occurs automatically without requiring manual alignment or complex manipulation, thus maintaining ease of operation while ensuring secure attachment.
Solution Approach 2:
The attachment mechanism is designed to self-engage through the interaction between the retention member and the receiving bore. The biasing member provides continuous force to maintain engagement, and the geometric features guide automatic alignment, allowing the system to secure itself without external intervention while remaining easy to operate.
4Reliability
If a lock assembly with retention member is added, then the attachment security improves, but the device complexity increases
Solution Approach 1:
The retention member, biasing member, and engagement features are integrated into a unified lock assembly where components work together as a cohesive unit. The retention member is partially disposed within the receiving bore and works in conjunction with the biasing member, combining multiple functions (retention, biasing, engagement) into a single integrated assembly that enhances security while managing overall 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
Enhances the secure attachment and efficient transfer of torque to surgical accessory tools, reducing wear and improving the operational efficiency of surgical instruments.
Implementation Method 1
a retention biasing member at least partially disposed in the cavity of the driving member and configured to urge the retention member towards the first position for engaging the surgical accessory tool
Data Source
AI summary
A surgical assembly for coupling to a surgical accessory tool. The surgical assembly includes a driving member. The driving member is rotatable about an axis. The driving member defines a bore for receiving the tool and an opening. The driving member has a planar surface defining the opening. The planar surface faces the axis and is disposed at a non-zero angle relative to the axis. The surgical assembly also includes a lock assembly to secure the tool to the driving member. The lock assembly includes a retention member moveably disposed in the opening. In a first position, a first volume of the retention member is disposed in the bore. In a second position, a second volume of the retention member less than the first volume is disposed in the bore. A biasing member urges the retention member toward the first position to engage the tool.