Endoscope Treatment Tool Handle Assembly with Compressed Contact
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Solution Overview
Problem
In endoscope treatment tools with high-frequency treatment devices, ensuring a reliable electrical connection between the connector and the elongated member, such as a wire, is crucial for effective operation, but conventional methods often fail to secure this connection consistently.
Innovation Solution
A handle assembly with a transmission member, connector, and an elastic body that compresses to ensure electrical contact between the connector and the elongated member, allowing for sliding and rotational movements while maintaining a stable connection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional connector and wire arrangement is used, then the device structure is simple, but the electrical connection reliability is insufficient
Solution Approach 1:
The patent applies the dynamics principle by making the connector slidable relative to the transmission member along its longitudinal axis. The connector can move between a retracted state (when not in use) and an extended state (when engaged with the wire), allowing the structure to adapt between operational and non-operational conditions. This dynamic capability ensures reliable electrical connection during engagement while maintaining structural simplicity when disengaged.
Solution Approach 2:
The elastic body serves as an intermediary element between the connector and the transmission member. It provides elastic force to maintain continuous contact and pressing between these components, ensuring stable electrical connection. The elastic body compensates for minor misalignments and wear, acting as a mediator that sustains reliable electrical contact without requiring complex adjustment mechanisms.
2Adaptability or versatility
If the connector is fixed rigidly to the transmission member, then the electrical connection is stable, but the ability to accommodate sliding and rotational movements is limited
Solution Approach 1:
The connector is designed with dynamic movement capabilities relative to the transmission member. It can slide along the longitudinal axis and rotate around the transmission member while maintaining electrical connection. This dynamic design allows the system to accommodate various operational positions and orientations without compromising the electrical connection, as the connector remains electrically engaged throughout the range of motion.
Solution Approach 2:
The elastic body acts as a mediator that maintains electrical contact during sliding and rotational movements. It provides continuous elastic pressing between the connector and transmission member, compensating for the relative motion and ensuring stable electrical connection regardless of the connector's position or orientation. This intermediary element enables both adaptability and reliability simultaneously.
3Reliability
If the elastic body is made highly compliant to ensure contact, then the electrical connection is reliable, but the elastic body may deform excessively under compression
Solution Approach 1:
The elastic body's material properties and geometric parameters are carefully optimized to achieve the desired balance. The material is selected with appropriate elasticity and strength characteristics, and the elastic body's dimensions, shape, and thickness are designed to provide sufficient compression for reliable contact while preventing excessive deformation. This parameter optimization ensures the elastic body maintains its structural integrity during operation.
Solution Approach 2:
The elastic body is designed with non-uniform local properties to optimize performance. Different regions of the elastic body may have varying thicknesses, densities, or material compositions to concentrate the elastic force where needed for reliable electrical contact, while maintaining overall structural stability. This local quality variation allows the elastic body to achieve both reliable contact and resistance to excessive deformation.
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 solution ensures a reliable electrical connection between the connector and the wire, enabling consistent high-frequency treatment regardless of the handle's position, preventing disconnection and ensuring effective treatment operations.
Implementation Method 1
an elastic body being conductivity, wherein the elastic body contacts the transmission member in a state in which the elastic body is compressed
Data Source
AI summary
A handle assembly includes: a handle body; a transmission member configured to transmit a high-frequency current; a connector being conductive and extending in a direction intersecting a longitudinal axis of the transmission member; and an elastic body being conductive, wherein the elastic body contacts the transmission member in a state in which the elastic body is compressed, and the transmission member is slidable relative to the connector in a state in which the transmission member is pressed against the connector.