Rotating Ring Actuator for Surgical Driver Switching
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Solution Overview
Problem
Existing surgical instrument driving devices have complex and time-consuming handling mechanisms, particularly in medical settings, due to the need for precise alignment of actuating elements, which hinders timely intervention and increases mechanical wear.
Innovation Solution
A surgical instrument driving device with a rotatable actuating element extending around the housing circumference, incorporating a solenoid switch and relay for simplified operation, reduced mechanical engagement, and enhanced durability, along with a magnetic switch for liquid, steam, and gas sterilization compatibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a pushbutton switch or slide switch is used as the actuating element, then the switching device can be constructed simply, but the handling becomes complex and time-consuming due to the need for precise alignment
Solution Approach 1:
The actuating element is designed as a ring-shaped component that extends around the circumference of the housing, allowing actuation in the rotational dimension rather than requiring radial or longitudinal movement. This dimensional change enables the user to actuate the switch from any rotational position, eliminating the alignment requirement while maintaining structural simplicity
Solution Approach 2:
The ring-shaped actuating element serves multiple functions: it acts as the switching actuator, provides rotational positioning feedback, and allows operation from any hand position. This multi-functionality resolves the contradiction by enhancing ease of operation without adding structural complexity
2Device complexity
If a pushbutton switch or slide switch is used as the actuating element, then the switching device structure is simple, but mechanical wear increases due to repeated mechanical engagement
Solution Approach 1:
The patent replaces the mechanical pushbutton or slide switch mechanism with a magnetic field-based actuating system. The ring-shaped actuating element generates or interacts with a magnetic field to actuate the switching device, eliminating direct mechanical contact and friction between moving parts. This substitution maintains structural simplicity while dramatically reducing mechanical wear and extending service life
3Ease of operation
If the actuating element extends completely around the circumference of the housing, then handling is simplified and quick, but the device structure becomes more complex
Solution Approach 1:
The ring-shaped actuating element that extends around the circumference serves multiple functions simultaneously: it acts as the switching actuator, provides rotational positioning feedback, and allows operation from any hand position. This multi-functionality justifies the extended structure by delivering enhanced ease of operation without proportionally increasing complexity
Solution Approach 2:
By extending the actuating element in the circumferential dimension rather than using a simple radial pushbutton, the patent enables actuation from any rotational position. This dimensional extension provides intuitive ease of operation while the ring shape itself serves as the complete actuating mechanism, avoiding the need for additional complex components
4Reliability
If a magnetic switch is used instead of mechanical switches, then the device becomes insensitive to liquid, steam and gas sterilization, but the switching mechanism becomes more complex
Solution Approach 1:
The patent replaces mechanical switches with a magnetic field-based switching mechanism. The ring-shaped actuating element interacts with the magnetic switch through magnetic field interaction rather than direct mechanical contact. This substitution provides sterilization resistance by eliminating mechanical wear and contamination risks while the magnetic field interaction keeps the mechanism relatively simple and maintenance-free
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 achieves simplified and quick handling, reduced mechanical wear, and increased service life, ensuring easy and efficient operation in medical environments while maintaining sterilization integrity.
Implementation Method 1
The switching device has an actuating element which extends completely around the circumference of the housing and is designed such that it can be rotated relative to the housing and which can be actuated by the actuating element magnetic switch for switching on and off the motor
Implementation Method 2
A simple, compact and achieve stable construction of the entire device. The design of the device according to the invention with an actuating element of the switching device that extends completely around the circumference of the housing and is designed to be rotatable relative to the housing also results in extremely simple and quick handling of the device as a whole
Implementation Method 3
a relay assigned to the motor and provided as a motor brake as well as for building and maintaining a sufficient operating voltage
Data Source
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Figure 8A~8E
AI summary
The invention relates to a device for driving instruments and tools comprising a housing (12) for mounting a motor (18), a power supply device (20) associated with the motor (18), and a conical drive element (22) partially protruding out of the housing (12) and associated with the motor (18) and interacting with the instruments or tools, and a switching device (16) disposed on the outside (14) of the housing (12) for switching on and off the motor (18), the switching device (16) comprising an actuating element (26) extending at least partially around the circumference of the housing (12) and being designed to be rotatable relative to the housing (12), and the use thereof.