Surgery Assist Backup Power for Critical Loads Only
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Solution Overview
Problem
The challenge of downsizing surgery assistance devices while ensuring they can operate during power failures due to the need for larger backup batteries to maintain functionality.
Innovation Solution
A dual power supply system with a manual switch that allows selective use of backup power to critical loads, such as electromagnetic brakes, reducing the size of the backup battery required.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the backup battery capacity is increased to maintain device operation during power failures, then the reliability is improved, but the device size increases
Solution Approach 1:
The patent divides the power supply system into two distinct paths: a first power supply voltage path for non-essential loads and a second power supply voltage path for essential loads only. This segmentation allows the backup battery to power only critical components (electromagnetic brakes and manual switch) during power failures, rather than all device components, thereby reducing the required battery capacity and device size while maintaining safety and operational reliability.
2Reliability
If the backup battery capacity is increased to maintain device operation during power failures, then the reliability is improved, but the weight increases
Solution Approach 1:
The patent divides the power supply system into two distinct paths: a first power supply voltage path for non-essential loads and a second power supply voltage path for essential loads only. This segmentation allows the backup battery to power only critical components (electromagnetic brakes and manual switch) during power failures, rather than all device components, thereby reducing the required battery capacity and device weight while maintaining safety and operational reliability.
3Reliability
If the backup power supply is designed to power all loads, then the reliability is improved, but the device complexity increases
Solution Approach 1:
The patent divides the power supply system into two distinct paths: a first power supply voltage path for non-essential loads and a second power supply voltage path for essential loads only. This segmentation allows the backup battery to power only critical components (electromagnetic brakes and manual switch) during power failures, rather than all device components, thereby reducing the required battery capacity and device weight while maintaining safety and operational reliability.
Solution Approach 2:
The patent extracts and isolates the essential loads (electromagnetic brakes and manual switch) into a separate second power supply voltage path that is directly connected to the backup battery. This extraction simplifies the overall system architecture by clearly defining which components require backup power, reducing the complexity of power management while ensuring critical functions remain operational during power failures.
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
Enables the surgery assistance device to operate during power failures with reduced battery size, ensuring safety and functionality by selectively powering only essential components, thus facilitating downsizing.
Implementation Method 1
a backup power supply configured to output a power supply voltage by using a battery
Data Source
AI summary
A surgery assistance device includes a battery, loads, a manual switch, a power supply, and a backup power supply. The power supply is connected to a mains power supply and to the loads, and outputs a first power supply voltage to the loads. The manual switch is connected to a portion of the loads. The backup power supply is connected to the battery and to the manual switch, and outputs a second power supply voltage to the portion of the loads when the manual switch is closed.