Surgical Robot Adapter Stopper for Rotation Restriction
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing adapters for mounting surgical instruments on robot arms face challenges in minimizing bulkiness and complexity while preventing the dragging of the driving transmission member by the driving unit, as they require additional internal structures to restrict rotation.
Innovation Solution
An adapter set with a stopper that restricts the rotation of the driving transmission member before the driving unit engages, allowing for a simpler design that suppresses dragging without the need for extra internal structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If teeth are provided on the retractor plate and disk to prevent dragging around, then the disk can be stopped when dragged, but the adapter structure becomes more complex and bulky
Solution Approach 1:
The rotation restricting function is extracted from the adapter's internal structure and implemented by a separate stopper member. The stopper is mounted on the adapter body but functions as an independent component that can be easily removed, thereby preventing the disk from being dragged around without requiring complex internal tooth structures within the adapter itself.
Solution Approach 2:
A stopper member is introduced as an intermediary component between the driving unit and the disk. The stopper includes a rotation restricting part that physically prevents the disk from rotating when the driving unit accidentally engages with it, thereby solving the dragging problem without modifying the adapter's internal structure.
2Reliability
If a stopper is mounted on the adapter to restrict rotation, then dragging around is suppressed, but the adapter requires additional mounting and removal steps
Solution Approach 1:
The stopper is designed as a dynamic component that can be easily mounted and removed from the adapter. The stopper includes a mounting hole that allows it to be attached to the adapter body, and it can be quickly removed when the surgical instrument is mounted, adapting to different operational states without permanent installation.
3Adaptability or versatility
If the stopper is removed after driving unit engagement, then the disk can rotate freely for driving the surgical instrument, but the engagement process becomes more time-consuming
Solution Approach 1:
The stopper is pre-mounted on the adapter before the surgical instrument is attached to the robot arm. This preliminary action ensures that the disk cannot be dragged around during the initial engagement of the driving unit, and the stopper is subsequently removed in a single quick motion to enable free rotation for instrument operation.
Data Source
AI summary
An adapter set is provided with an adapter placed between a robot arm and a surgical instrument, and a stopper mounted on the adapter. The stopper includes a rotation restricting part configured to restrict a rotation of a driving transmission member of the adapter. The driving transmission member includes a first member that includes an engaging depressed part configured to fit together with a driven member of the surgical instrument and another engaging depressed part that is provided separately from the engaging depressed part and is configured to fit together with the rotation restricting part of the stopper, and a second member that includes an engaging depressed part configured to fit together with a driving member. The stopper is configured to be removed from the adapter after the driving member fits together with the second member of the adapter.