Detachable Bone Graft Injector for Easier Cleaning
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Solution Overview
Problem
Existing injectors for delivering artificial or allogeneic bones during orthopaedic operations are inconvenient to operate, clean, and maintain.
Innovation Solution
A convenient bone graft injector with a locking device, injection tube, and a locking and releasing mechanism that allows for detachable attachment of the injection tube, controlled injection through a push rod, and adjustable clamping force, enabling easy cleaning and precise control of injection speed and amount.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the injection tube is permanently fixed to the body, then the structural integrity is improved, but the ease of cleaning and maintenance deteriorates
Solution Approach 1:
The injection system is divided into separable components: the injection tube and the body. The locking device enables the injection tube to be detachably locked to the body, allowing the injection tube to be removed for cleaning while maintaining structural integrity during use. This segmentation resolves the contradiction by making the system modular rather than permanently fixed.
2Ease of repair
If the injection tube is detachably locked to the body, then the ease of cleaning is improved, but the reliability of the connection deteriorates
Solution Approach 1:
The locking device is pre-configured with the locking groove and locking protrusion structure before use. The tapered head structure is pre-formed on the injection tube, and the locking mechanism is pre-assembled on the body. This preliminary preparation ensures that when the injection tube is locked, the connection achieves high reliability immediately without requiring additional steps during the locking process.
3Speed
If the push rod is continuously pushed, then the injection speed is improved, but the precision of controlling injection amount deteriorates
Solution Approach 1:
The push rod mechanism enables periodic or intermittent action rather than continuous pushing. The operator can push the push rod in controlled intervals, pausing between pushes to monitor the injection process. This periodic action allows maintenance of injection speed while providing precision control over the total injection amount by adjusting the frequency and duration of push cycles.
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
Facilitates convenient operation, easy cleaning, and precise control of bone graft injection, enhancing the efficiency and usability of bone graft delivery systems.
Implementation Method 1
an injection elastic member, configured to provide an elastic push to the push rod
Implementation Method 2
The locking device includes a locking sleeve and a clamping sleeve. The injection tube is inserted into the clamping sleeve, and one end of the clamping sleeve has an outer tapered head structure, which is provided with at least one locking gap
Data Source
AI summary
A convenient bone graft injector for artificial or allogeneic bone includes: a body, an injection tube, a locking device, and an injection device. The locking device is used to detachably lock one end of the injection tube to the body. The injection device includes a push rod, an injection elastic member, and a locking and releasing mechanism arranged on the body. The injection elastic member acts between one end of the push rod and the body, and the injection elastic member is configured to provide an elastic push to the push rod, such that the other end of the push rod extends into the end of the injection tube locked to the body and moves towards the other end of the injection tube. The locking and releasing mechanism acts between the push rod and the body, and is configured to lock and release the push rod.