Medical Connector With Push-Out Disconnection Mechanism
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Solution Overview
Problem
Existing connectors for medical solution containers and syringes often experience unsatisfactory fitting, leading to difficulties in disconnecting the syringe, especially when the fitting force is excessive, resulting in potential impossibility of disconnection.
Innovation Solution
A connector design featuring a tube-shaped fitting section, a lock mechanism with clamp pieces and a leaf spring biasing system, and a push-out section that facilitates easy connection and disconnection of the syringe assembly by releasing the fixed state and pushing the assembly away from the connector main body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the fitting force between the syringe port and fitting section is increased to ensure secure connection, then the connection reliability is improved, but the ease of disconnection deteriorates
Solution Approach 1:
The connector is divided into distinct functional components: a fitting section for connection, a lock mechanism with clamp pieces for securing, and a push-out section for disconnection. This segmentation allows each component to perform its specific function optimally - the fitting section ensures secure connection while the push-out section enables easy disconnection, resolving the contradiction between connection reliability and ease of disconnection.
Solution Approach 2:
The lock mechanism transitions from a static fitting structure to a dynamic system with movable clamp pieces that can be engaged and disengaged. The biasing section provides automatic engagement force for secure connection, while the push-out section enables controlled disengagement. This dynamic behavior allows the connector to adapt between secure connection state and easy disconnection state, resolving the technical contradiction.
2Device complexity
If a simple fitting structure is used for connecting the syringe, then the device complexity is reduced, but the connection reliability deteriorates due to unwilling disconnection
Solution Approach 1:
The connector is segmented into functional modules: fitting section, lock mechanism with clamp pieces, biasing section, and push-out section. This modular segmentation maintains relative simplicity while ensuring reliable connection through the specialized lock mechanism, preventing unwilling disconnection that would occur with a simple fitting structure alone.
Solution Approach 2:
The biasing section automatically engages the clamp pieces with the syringe holder without requiring additional fastening operations. This self-service mechanism ensures reliable connection through automatic clamping force, maintaining connection reliability while avoiding the complexity of manual fastening systems.
3Reliability
If the fitting force is excessively high to ensure secure connection, then the connection reliability is improved, but the ease of operation deteriorates as disconnection becomes difficult or impossible
Solution Approach 1:
The connector separates the high-force connection function (fitting section with lock mechanism) from the disconnection function (push-out section). The lock mechanism provides excessively high fitting force for secure connection, while the push-out section provides a dedicated mechanism for easy disconnection, resolving the contradiction between high connection reliability and ease of disconnection.
Solution Approach 2:
The push-out section acts as an intermediary mechanism that mediates between the high-force lock mechanism and the disconnection requirement. When activated, it overcomes the high fitting force through mechanical advantage, enabling easy disconnection without compromising the secure connection during normal operation.
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
Ensures assured connection and easy, reliable disconnection of the syringe assembly from the connector, regardless of the fitting force, thereby improving operational efficiency in medical applications.
Implementation Method 1
a biasing section by which the pair of clamp pieces are biased toward each other
Implementation Method 2
a push-out section that pushes out the syringe assembly toward a base end in an interlocked manner with the fixing releasing operation
Data Source
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AI summary
A connector is to be connected to a syringe assembly, which is provided with at least one syringe having an outer cylinder with a tube-shaped port protruding from the leading end section, and a holder which holds the syringe. The connector is provided with: a connector main body to be mounted on a medical solution container wherein a medical solution is contained; a tube-shaped fitting section, which protrudes from the upper section of the connector main body, has the port of the syringe fitted therein, and connects the inside of the syringe and the inside of the medical solution container when the port of the syringe is fitted in the fitting section; and fixing means, which has a lock mechanism that fixes the syringe assembly to the connector main body when the port of the syringe is fitted in the fitting section, an operating section that performs fixing releasing operation of releasing the fixed state provided by the lock mechanism, and a push-out section that pushes out the syringe assembly toward the base end with the fixing releasing operation when the fixing releasing operation is performed.