Torque Limiting Ratcheting Mechanism Internal Cam
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Solution Overview
Problem
Existing torque-limiting and ratcheting tools used in medical procedures lack precision due to interactions between torque and ratcheting assembly components, leading to potential damage and reduced effectiveness over repeated use.
Innovation Solution
A torque limiting driver with a ratcheting mechanism, where the ratcheting assembly is housed within a cam member, minimizing interactions and optimizing precision by using a plunger and cam arrangement with a spring and gear system to control torque delivery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If torque assembly components interact with ratcheting assembly components, then both functions can be integrated in a single device, but precision is reduced for both torque limiting and ratcheting functions
Solution Approach 1:
The device is segmented into two independent assemblies: a torque assembly housed in a first housing and a ratcheting assembly housed in a second housing. This physical separation prevents interaction between the assemblies while allowing both functions to be integrated in one device, thereby maintaining precision for both torque limiting and ratcheting operations.
Solution Approach 2:
A drive shaft acts as an intermediary component that transmits rotational motion from the torque assembly to the ratcheting assembly without requiring direct interaction between their internal components. This mediator enables functional integration while preserving the independence and precision of each assembly.
2Adaptability or versatility
If torque assembly and ratcheting assembly components interact, then a combined function is achieved, but precision deteriorates after repeated uses
Solution Approach 1:
By dividing the device into separate torque and ratcheting assemblies housed in different housings, the invention eliminates wear and interaction errors that would accumulate with repeated use. Each assembly operates independently, maintaining consistent precision over time while providing combined functionality.
3Volume of moving object
If multiple components interact in a compact design, then device size is reduced, but precision and reliability decrease
Solution Approach 1:
The invention merges the torque assembly and ratcheting assembly into a single integrated device with common housings, allowing compact design. However, the assemblies are positioned and configured to minimize interaction, preserving precision while achieving space efficiency through functional integration.
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 precise torque control and minimizes wear, ensuring accurate and reliable operation even after repeated use by isolating the ratcheting and torque-limiting functions within the cam member, enhancing the tool's overall precision and longevity.
Implementation Method 1
a spring and gear system to control torque delivery
Implementation Method 2
a plunger that interacts with a cam member
Implementation Method 3
a spring and gear system to control torque delivery
Data Source
AI summary
A torque limiting and ratcheting driver having a housing and a torque limiting assembly located within the housing. The torque limiting assembly includes a cam member, a plunger, and a roller supported by the plunger that interacts with the cam member. The ratcheting assembly is located interiorly of the cam member.