Injection Gadget Linear Actuator Payload Reduction
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Solution Overview
Problem
Existing automatic injectors require additional actuators for removing safety pins, increasing the payload of rescue robots and making it difficult to maintain a perpendicular injection angle, which complicates accurate injection in emergency situations.
Innovation Solution
An injection gadget with a linear actuator and pusher that releases a locking pin and performs injection using a single mechanism, eliminating the need for a separate actuator for safety pin removal and maintaining a stable injection angle through sensors and a spring-driven piston mechanism.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a separate actuator is added to remove the safety pin, then the safety pin removal function is improved, but the payload of the robot manipulator increases
Solution Approach 1:
The patent combines the safety pin removal function and injection execution function into a single actuator system. The actuator simultaneously performs both operations through integrated mechanical linkage, eliminating the need for a separate actuator and reducing the overall payload requirement of the robot manipulator.
Solution Approach 2:
The single actuator is designed to perform multiple functions: it both removes the safety pin and executes the injection. This multi-functional design allows one component to replace what would traditionally require two separate components, thereby reducing system weight and complexity.
2Device complexity
If the automatic injector structure is used, then the injection mechanism is simplified, but the injection angle cannot be maintained perpendicular, reducing injection accuracy
Solution Approach 1:
The patent incorporates sensors that detect the injection angle and provide feedback to the control system. Based on this feedback, the controller adjusts the actuator's movement to maintain the needle perpendicular to the injection site, ensuring accurate injection despite the simplified mechanical structure.
Solution Approach 2:
The system transitions from a static, fixed-angle injection mechanism to a dynamic system that can adjust the injection angle in real-time. The actuator can modify the needle orientation during the injection process based on sensor feedback, maintaining perpendicular alignment with the injection site.
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 accurate and efficient injection with reduced payload on rescue robots, allowing for remote emergency treatment and minimizing the need for lifesaving manpower in disasters or wars.
Implementation Method 1
an injection liquid is provided between a cylinder and a piston, and the piston is moved by an elastic force of a spring previously compressed inside the cylinder so that the injection needle protrudes to the outside of the injection assembly and the injection liquid is ejected
Data Source
AI summary
Disclosed is an injection gadget corresponding to an end-effector such as a rescue robot or the like. The injection gadget is configured such that an injection needle is disposed inside an injection assembly, an injection liquid is provided between a cylinder and a piston of the injection assembly, and the piston is moved by an elastic force of a spring previously compressed inside the cylinder so that the injection needle protrudes to the outside of the injection assembly and the injection liquid is ejected, and includes a bracket that replaceably mounts the injection assembly, a main body that is connected to the bracket and includes a first body space portion of which one side surface facing the bracket and the other side surface are open to pass through each other and a second body space portion that is disposed next to the first body space portion, a controller that is mounted in the second body space portion, a linear actuator that moves a transfer shaft in accordance with a control signal of the controller, and a pusher that is disposed between the linear actuator and the injection assembly, and transmits a force of the linear actuator toward the injection assembly so that a locking pin of the bracket is deviated from locking guides of the piston of the injection assembly.