Manual Reset Mechanism for Electric Staplers Using One-Way Transmission
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Solution Overview
Problem
Existing medical devices, such as electric staplers, face complications in resetting mechanisms, leading to instrument failure and scrapping after unexpected shutdowns, requiring a simple and safe method for mechanical resetting.
Innovation Solution
A resetting device with a one-way rotation transmission mechanism, utilizing a ratchet and gear system, allows for safe and reliable manual resetting of the cutting knife, using a resetting wrench for operation, ensuring continuous functionality without additional tools.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a reset mechanism is added to allow manual retraction of the cutting knife, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The transmission mechanism is segmented into multiple independent components: a first transmission mechanism for normal operation, a second transmission mechanism for resetting, and a switching mechanism to alternate between them. This segmentation allows each component to be optimized for its specific function while maintaining overall system reliability without excessive complexity.
Solution Approach 2:
The switching mechanism dynamically connects or disconnects the first and second transmission mechanisms based on operational needs. During normal operation, only the first transmission mechanism is engaged; during resetting, the switching mechanism engages the second transmission mechanism. This dynamic switching adds functionality without requiring both mechanisms to be permanently active, thus managing complexity.
2Ease of operation
If a switching mechanism is introduced to alternate between first and second transmission mechanisms, then the ease of operation is improved, but the device complexity increases
Solution Approach 1:
The switching mechanism is designed to be automatically triggered by the resetting operation itself. When the resetting force is applied, the switching mechanism automatically disengages the first transmission mechanism and engages the second transmission mechanism without requiring separate manual intervention. This self-service approach improves ease of operation while minimizing the added complexity.
3Object-affected harmful factors
If the one-way rotation transmission mechanism is used to allow rotation in only one direction, then the safety is improved, but the adaptability decreases
Solution Approach 1:
The system dynamically switches between two transmission paths: the first transmission mechanism allows bidirectional rotation for normal versatile operation, while the one-way second transmission mechanism provides safety during resetting. The switching mechanism enables the system to adapt its rotational characteristics based on the operational phase, thus maintaining both safety and adaptability.
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 a simple, safe, and reliable method for resetting medical devices, preventing misoperation and allowing continuous use after fault resetting, ensuring safety and usability during patient operations.
Implementation Method 1
the one-way rotation transmission mechanism is a ratchet, and the second rotation transmission mechanism is a second gear, wherein only when the one-way rotation transmission mechanism is rotating in the preset first direction, the second rotation transmission mechanism can be driven to rotate
Data Source
AI summary
The present teaching relates to a reset apparatus including a first transmission mechanism, a first rotary transmission mechanism, a one-way rotary transmission mechanism, and a second rotary transmission mechanism; a stapler; and a medical device. The one-way rotary transmission mechanism only rotates in a set direction, and is connected with the second rotary transmission mechanism, and drives the same to rotate towards the set direction. In a first state, the first transmission mechanism is connected with the first rotary transmission mechanism which drives the first transmission mechanism to act along the set direction. In a second state, the first transmission mechanism is connected with the second rotary transmission mechanism which drives the first transmission mechanism to act along the set direction. The present invention achieves manual resetting when the device is accidentally shut down, and is simple in structure, and safe and reliable in use.