Motive Power Transmission Adapter Lateral Movement
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Solution Overview
Problem
Existing motive power transmission adapters for surgical tools pose challenges in preventing contamination between clean and unclean regions during surgery, as they can cause the power transmission portion to protrude and potentially get caught in the operator's glove, leading to damage and instability in the surgical tool's position, and require complex adjustments and increased driving force due to biasing mechanisms.
Innovation Solution
A motive power transmission adapter with a casing that includes clean and unclean surfaces, where the power transmission portions move in a direction intersecting the linear motion direction, preventing protrusion and facilitating easy adjustment, and incorporating engagement portions and elastic elements for secure attachment and force detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the power transmission portion is allowed to move freely in the linear motion direction, then the surgical tool can be driven accurately, but the power transmission portion may protrude and get caught in the operator's glove causing contamination and safety issues
Solution Approach 1:
The patent changes the movement direction of the power transmission portion from the linear motion direction (front-rear) to a direction intersecting with it (lateral direction). This dimensional change allows the power transmission portion to move without protruding in the harmful linear direction, eliminating the risk of glove entanglement while maintaining driving accuracy.
2Object-affected harmful factors
If a wall is provided on the adapter body to prevent operator's hand entry into the movable region, then contamination is prevented, but it becomes difficult to adjust the position of the power transmission portion when the surgical tool is attached
Solution Approach 1:
By changing the movement direction to intersect with the linear motion direction, the patent eliminates the need for protective walls. The power transmission portion moves laterally instead of protruding forward, allowing operator access for adjustments while maintaining contamination prevention.
Solution Approach 2:
The patent removes the protective wall structure by fundamentally changing the movement mechanism. Instead of constraining the power transmission portion with walls, the system extracts the harmful protrusion behavior by redirecting movement to a different dimension.
3Ease of operation
If a spring or biasing mechanism is used to eliminate the need for position adjustment, then ease of attachment is improved, but the driving force required increases and the power unit size increases
Solution Approach 1:
The patent eliminates the need for spring biasing mechanisms by changing the movement direction. The lateral movement allows natural engagement without requiring additional biasing forces, thereby reducing power requirements and avoiding increased power unit size.
Solution Approach 2:
The patent replaces the mechanical spring biasing system with a geometric solution based on directional movement. Instead of using elastic mechanical elements to achieve easy attachment, the system uses the intersecting movement direction to enable natural engagement.
4Ease of operation
If a spring or biasing mechanism is used to eliminate position adjustment, then attachment ease is improved, but hysteresis occurs in the driving force leading to control instability
Solution Approach 1:
By redirecting the power transmission portion's movement to an intersecting direction, the patent eliminates hysteresis effects associated with spring biasing. The lateral movement mechanism provides stable, predictable force transmission without the elastic deformation and energy loss characteristic of spring-based systems.
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
This configuration effectively suppresses contamination between regions, enhances the safety and ease of surgical tool attachment and detachment, reduces the risk of power transmission portion interference, and maintains precise control and accuracy by minimizing hysteresis and adjusting forces.
Implementation Method 1
an elastic element configured to bias the power transmission portion toward a position where the power transmission portion engages with the drive portion
Data Source
AI summary
A motive power transmission adapter includes a casing and at least one power transmission portion. The casing is disposed between a surgical tool and a power unit for driving the surgical tool. In addition, the casing includes a clean surface which is a surface facing the surgical tool disposed in a clean region and an unclean surface which is a surface facing the power unit disposed in an unclean region. At least one power transmission portion is movable relative to the casing and transmits a movement of the drive portion to the driven portion. In addition, at least one power transmission portion is disposed to be movable in a direction in which the clean surface and the unclean surface extend and is disposed between the drive portion and the driven portion in a direction intersecting a linear motion direction of the drive portion.