Fluid Pressurizing Device Half-Nut Cam Mechanism
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Solution Overview
Problem
Existing fluid pressurizing devices for balloon catheterization procedures require overt user actions to switch between micro and macro movements of the plunger, making them less intuitive and efficient for operators.
Innovation Solution
A fluid pressurizing device with a half-nut mechanism that remains engaged with the plunger except when pushed or pulled, allowing for simple and intuitive operation by pulling, pushing, or rotating the plunger handle to achieve micro or macro movements without the need for additional lever or button manipulation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a half-nut mechanism with lever or button manipulation is used to switch between micro and macro movements, then the device can provide both micro and macro plunger movements, but the operation becomes more complex and less intuitive
Solution Approach 1:
The invention extracts the half-nut mechanism from the plunger assembly, allowing it to be independently actuated. The half-nut is removed from direct engagement with the plunger and instead controlled by a cam mechanism that can be actuated by simple push/pull motions, eliminating the need for complex lever or button manipulation while maintaining the ability to switch between micro and macro movements
Solution Approach 2:
The invention introduces a cam mechanism as an intermediary between the user's simple push/pull action and the half-nut engagement/disengagement. This cam mechanism translates the simple linear motion into the appropriate rotational or lifting motion needed to control the half-nut, providing an intuitive interface that maintains versatility without adding operational complexity
2Productivity
If a spring-biased button or lever mechanism is used to disengage the plunger for macro movement, then the device can achieve macro movement, but the operation requires additional user actions that reduce efficiency
Solution Approach 1:
The invention extracts the plunger actuation mechanism from the threaded engagement system. By removing the plunger from direct threaded engagement with the body and instead using a cam-controlled half-nut mechanism, the system allows the plunger to be freely actuated by simple push/pull motions for macro movements, eliminating the need for additional button pressing or lever manipulation
Solution Approach 2:
The cam mechanism is designed to automatically control the half-nut engagement and disengagement based on the user's push/pull motion. The system self-regulates the transition between micro and macro movement modes without requiring the user to perform additional actions, making the device more efficient and easier to operate
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 device simplifies the operation by allowing users to execute micro movements through rotation and macro movements through pushing or pulling, enhancing user convenience and efficiency in balloon inflation and deflation processes.
Implementation Method 1
The user grip assembly includes a cam mechanism which converts linear motion into rotational or lifting motion to control the half-nut engagement
Implementation Method 2
The user grip assembly includes a spring mechanism that stores and releases mechanical energy to return the assembly to its original position
Data Source
AI summary
A fluid pressurizing and displacement device which is configured for both macro movement and micro movement of a plunger. In order to execute micro movement of the plunger, a user need only rotate the plunger; to execute macro movement of the plunger, a user need only push or pull the plunger. This simplicity in use is possible because a half-nut (or other suitable structure within the device) remains engaged with the plunger, except when the plunger is being pushed or pulled by its operator. All user motions are simple and intuitive.