Remote Controlled Actuator Segmentation for Surgical Precision
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Solution Overview
Problem
Conventional remote controlled actuators in the medical field face challenges in accurately processing artificial joint insertion openings due to limited tool attitude adjustment capabilities, leading to increased procedural time and patient burden during surgeries like hip joint replacement, especially when dealing with complex bone shapes and deep grooves.
Innovation Solution
A remote controlled work robot system comprising a remote controlled actuator with a spindle guide section and a support device providing one or multiple degrees of freedom, allowing for precise attitude alteration of the tool attached to the distal end of the spindle guide section, stabilized by a support device with a multi-degrees-of-freedom system to minimize hand wobbling effects and enhance precision.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional remote controlled actuator with a straight elongated pipe is used, then the tool can be inserted deep into the bone, but the processing precision and attitude adjustment capability are insufficient for complex bone shapes
Solution Approach 1:
The actuator is divided into multiple sections (first elongated pipe section, second elongated pipe section) that can be independently positioned and oriented. This segmentation allows each section to contribute to the overall attitude adjustment, enabling precise tool positioning for complex bone geometries while maintaining deep insertion capability
Solution Approach 2:
The invention introduces angular/rotational degrees of freedom in addition to the linear insertion dimension. The first and second elongated pipe sections can be rotated relative to each other, adding angular dimension control that enables precise attitude adjustment for complex bone shapes while preserving the ability to insert deep into the bone
2Ease of operation
If the elongated pipe is made curved to minimize skin incision, then the access opening can be smaller, but the tool positioning accuracy and stability deteriorate due to hand wobbling
Solution Approach 1:
The actuator incorporates dynamic positioning capabilities with multiple degrees of freedom, allowing real-time adjustment and stabilization of the tool position. The multi-section design with rotational joints enables compensatory movements that counteract hand wobbling, maintaining positioning accuracy even with a curved configuration that minimizes skin incision
3Length of moving object
If a rotatable element is exposed at the distal end for deep insertion, then the tool can reach deep grooves, but the capability to perform curved configuration drilling and cutting is limited
Solution Approach 1:
The actuator is segmented into multiple rotatable sections that can independently adjust their orientation. This allows the tool to maintain deep insertion capability while the segmented structure enables curved configuration drilling and cutting through coordinated rotation of the sections, greatly enhancing versatility
Data Source
AI summary
A remote controlled work robot including a remote controlled actuator and a support device therefor. The remote controlled actuator includes a spindle guide section of an elongated configuration, a distal end member fitted to a distal end of the spindle guide section through a distal end member coupling structure for alteration in attitude, and a drive unit housing connected with a base end of the spindle guide section. The distal end member rotatably supports a spindle for holding a tool. The support device includes a single degree-of-freedom system, in which the remote controlled actuator has a degree of freedom in one direction, or a multi-degrees-of-freedom system, in which the remote controlled actuator has a two or more degrees of freedom relative to a base on which the support device is installed. A drive source and is also provided for driving the degree-of-freedom system.