Surgical Aiming Device One-Touch Guide Sleeve Locking
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Solution Overview
Problem
Existing surgical aiming devices require tightening a knob to fix the guide sleeve and loosening it to detach, which can cause the sleeve to shake or be pushed backward during implantation of a drill or leg screw, and lacks a convenient detachment mechanism.
Innovation Solution
A surgical aiming device with a guide sleeve attachment/detachment unit that includes a button, operation lever, and elastic member, allowing for one-touch attachment and detachment of the guide sleeve through a threaded portion and locking mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a knob is used to tighten and loosen the guide sleeve, then the guide sleeve can be attached and detached, but the guide sleeve may shake or be pushed backward during implantation
Solution Approach 1:
The guide sleeve attachment/detachment unit utilizes the elastic member to automatically apply locking force to the threaded portion when the operation lever is rotated, eliminating the need for separate tightening operations. The system serves itself by using the attachment action to simultaneously secure the guide sleeve firmly
Solution Approach 2:
The traditional multi-step mechanical tightening system (knob rotation, threading, locking) is replaced with a simplified lever-based mechanism that uses elastic force to maintain constant locking pressure on the threaded portion, preventing guide sleeve movement during implantation
2Ease of operation
If the knob is tightened to prevent shaking, then the guide sleeve is fixed securely, but detachment requires loosening the knob which complicates the process
Solution Approach 1:
The attachment mechanism is segmented into distinct functional components: the button for user input, the operation lever for force transmission, the threaded portion for mechanical engagement, and the elastic member for maintaining locking force. This segmentation allows each component to perform its specific function efficiently
Solution Approach 2:
Instead of requiring active loosening to detach, the system is designed so that detachment occurs when the elastic member's locking force is released. The button press inverts the normal operation by releasing the lever from its locked position, allowing automatic detachment without manual loosening steps
3Ease of operation
If a simple attachment mechanism is used, then detachment is easy, but the guide sleeve cannot be prevented from being pushed or shaken
Solution Approach 1:
The elastic member is pre-loaded to continuously exert locking force on the threaded portion before any operation occurs. This preliminary action ensures the guide sleeve is already secured against pushing or shaking forces, and the one-touch button operation only releases this pre-established locking state for detachment
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 prevents the guide sleeve from being pushed or shaken during implantation and allows for easy attachment and detachment with a single button touch, enhancing stability and usability.
Implementation Method 1
an elastic member that is contracted and restored by the operation level when the button is pressed
Data Source
AI summary
The present disclosure relates to a surgical aiming device 1 that prevents a sleeve from being pushed backward or shaken when a drill or a leg screw is implanted after a guide sleeve is mounted on an aiming device. The surgical aiming device includes: a body 20 having an aiming arm 21 and a barrel 22; a guide sleeve 30 disposed at an end of the aiming arm 21 and guiding a nail 10 and a leg screw 12; and a knob 40 for detachably attaching the guide sleeve 30, in which the guide sleeve 30 can be detachably attached in a one-touch type by a guide sleeve attachment/detachment unit 100 installed at an end of the aiming arm. The guide sleeve attachment/detachment unit 100 includes: an operation unit 21a installed at an end of the aiming arm 21; a button 110 installed at the operation unit 21a and partially exposed to the outside; an operation lever 120 being rotated on a rotary shaft by operation of the button 110; and a threaded portion 30a controlled by the operation lever 120 and formed on the guide sleeve 30a.