Sheath Adapter Telescopic Rod Assembly for Instrument Alignment
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Solution Overview
Problem
Existing minimally invasive surgical instruments require complex and time-consuming assembly processes due to the need for precise angular orientation of worm gears, leading to poor assembly convenience.
Innovation Solution
A sheath adapter with a telescopic rod assembly and cap design that allows for sliding and rotational adjustments to facilitate easy alignment of the surgical instrument knob within a receiving groove, utilizing a deceleration assembly and telescopic sleeve for stable and precise assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the worm gear and worm are used for transmission connection to ensure transmission accuracy, then the transmission precision is improved, but the assembly complexity increases due to the need for repeated angular orientation adjustments
Solution Approach 1:
The patent applies preliminary action by pre-configuring the worm gear structure with multiple positioning features and guide slots that automatically align the worm and worm gear teeth during assembly. This eliminates the need for repeated manual angular adjustments, as the components are designed to self-align and mesh correctly on the first attempt, thereby reducing assembly complexity while maintaining transmission accuracy.
2Measurement precision
If the worm gear and worm are used for transmission connection to ensure transmission accuracy, then the transmission precision is improved, but the assembly time increases due to repeated adjustments
Solution Approach 1:
The patent applies preliminary action by pre-configuring the worm gear structure with multiple positioning features and guide slots that automatically align the worm and worm gear teeth during assembly. This eliminates the need for repeated manual angular adjustments, as the components are designed to self-align and mesh correctly on the first attempt, thereby reducing assembly time while maintaining transmission accuracy.
3Adaptability or versatility
If the knob angle is varied for different surgical instruments to achieve proper meshing, then the adaptability is improved, but the ease of operation deteriorates due to the need for repeated angle adjustments
Solution Approach 1:
The patent applies universality by designing the worm gear structure with standardized guide slots and positioning features that can accommodate multiple surgical instruments with different knob angles. The universal design allows various instruments to be assembled using the same adapter without requiring repeated angle adjustments, as the guide slots automatically accommodate the different angles while maintaining proper meshing.
Data Source
AI summary
A sheath adapter for a surgical assistance system includes a support frame, a telescopic rod assembly and a cap. The rod assembly includes a movable shaft and a rotating shaft which has a first end rotatably connected to the support frame and a second end slidably connected to a first end of the movable shaft. The cap includes a groove for receiving a knob and is connected to a second end of the movable shaft. The rotating shaft is rotatable to cause the rotation of the cap via the movable shaft. The movable shaft is slidable in an axial direction to adjust the position of the cap relative to the support frame. The sheath adapter and the rod assembly are configured to form clearance to allow placement of a surgical instrument on the support frame and attachment of the knob of the surgical instrument via the cap to allow assembly.