Synchronized Injection Aspiration Device with Gear Mechanism
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Solution Overview
Problem
Current medical devices for synchronized injection and aspiration often require complex setups and two-handed operation, making them cumbersome and inefficient, especially when dealing with procedures that require simultaneous fluid injection and removal, such as vein ablation or abscess treatment.
Innovation Solution
A device with a synchronization mechanism that uses linear actuators and gearwheels to automatically synchronize the plunger movements of two syringes, allowing for simultaneous injection and aspiration with independent syringe attachment and detachment, enabling single-handed operation and maintaining sterility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a device uses complex setups for synchronized injection and aspiration, then the synchronization precision is improved, but the device complexity increases and ease of operation deteriorates
Solution Approach 1:
A synchronization mechanism acts as an intermediary between two independently operable syringes, coordinating their plunger movements through mechanical linkages. This allows precise synchronized operation without requiring complex integrated control systems, as the synchronization mechanism translates the operation of one syringe into corresponding movement of the other.
Solution Approach 2:
The device is divided into independently attachable syringe units that can be separately operated and replaced. Each syringe functions as an independent module that can be attached to or detached from the synchronization mechanism, allowing for simplified individual components rather than a monolithic complex system.
2Measurement precision
If a device requires two-handed operation for synchronized injection and aspiration, then the control precision is improved, but the ease of operation deteriorates and operator workload increases
Solution Approach 1:
The operations of two syringes that would traditionally require two hands are merged into a single operational interface. The synchronization mechanism allows one operator to control both injection and aspiration functions simultaneously through a single hand operation, combining multiple control functions into one unified operation.
Solution Approach 2:
The synchronization mechanism automatically coordinates the movement of both syringes based on the operation of one, eliminating the need for manual coordination by the operator. The system self-regulates the proportional movement of both plungers, reducing operator workload while maintaining precise control.
3Reliability
If syringes are permanently fixed to the device, then the synchronization reliability is improved, but the adaptability deteriorates and sterility maintenance becomes difficult
Solution Approach 1:
The connection between syringes and the device transitions from static permanent fixation to dynamic attachable/detachable coupling. The mechanical connectors allow syringes to be securely attached during operation for reliable synchronization, then easily detached for replacement, providing both stability during use and flexibility for changes.
4Device complexity
If syringes cannot be easily replaced, then the device complexity is reduced, but the productivity deteriorates and contamination risk increases
Solution Approach 1:
Syringes are prepared and loaded outside the sterile field, then attached to the device ready for immediate use. The attachable connector system allows pre-prepared syringes to be quickly exchanged during procedures, eliminating downtime and maintaining continuous productive operation without requiring complex in-place reloading mechanisms.
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 facilitates efficient and sterile synchronized injection and aspiration, reducing operator workload and preventing contamination by allowing single-handed operation and easy replacement of syringes during procedures, while maintaining sterility and being cost-effective.
Implementation Method 1
The device comprises a first linear actuator (110A), a second linear actuator (110B)
Implementation Method 2
A device with a synchronization mechanism that uses linear actuators and gearwheels to automatically synchronize the plunger movements of two syringes
Data Source
Figure 1
Figure 2
Figure 3A~3B
AI summary
There is provided a device for automatic synchronized injection and aspiration of fluids comprising: a first linear actuator; a second linear actuator; a first coupling mechanism attached at a distal end portion of the first linear actuator, the first coupling mechanism arranged for detachable coupling to a first plunger of a first syringe; a second coupling mechanism attached at a distal end portion of the second linear actuator, the second coupling mechanism arranged for detachable coupling to a second plunger of a second syringe; and a synchronization mechanism mechanically coupled to the first and second linear actuators, the mechanism arranged so that insertion of the first plunger further into a first barrel of the first syringe is synchronized with extraction of the second plunger from a second barrel of the second syringe, thereby injection from the first syringe is synchronized with aspiration into the second syringe.