Remote Actuator Spindle Guide for Deep Groove Precision
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Solution Overview
Problem
Conventional remote controlled actuators face challenges in processing complex shapes and deep grooves in medical procedures, such as artificial joint replacement, due to limited tool attitude adjustment and heat management, requiring improved rigidity, cooling efficiency, and reduced weight and energy consumption while avoiding harmful lubricants or coatings.
Innovation Solution
A remote controlled actuator with a spindle guide section of high rigidity, incorporating a distal end member with attitude altering members and a compact drive source, allowing remote control of tool attitude changes, efficient cooling through a coolant liquid system, and friction reduction, ensuring precise and accurate processing without lubricants or coatings harmful to the human body.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the elongated pipe is curved to minimize skin incision and muscular scission, then the postoperative trace is minimized, but the working range of the tool is limited and processing precision is reduced
Solution Approach 1:
The actuator incorporates a mechanism that allows the elongated pipe to dynamically change its curvature and orientation during the procedure. The distal end can be positioned deep into the bone through a curved path while the proximal end remains outside the body, enabling both minimal incision and precise processing through dynamic configuration adjustment
Solution Approach 2:
The actuator transitions from a simple linear configuration to a three-dimensional curved configuration, allowing the tool to reach deep internal sites through a curved trajectory while maintaining external control points. This dimensional transformation enables simultaneous achievement of minimal external access and deep internal reach
2Productivity
If the elongated pipe is made straight to maximize working range, then the tool can reach deep into the bone, but skin incision and muscular scission increase
Solution Approach 1:
The actuator employs a dynamic configuration system where the elongated pipe can change its shape from straight to curved based on procedural requirements. The mechanism allows the pipe to bend at intermediate portions, enabling deep bone access through curved paths while keeping the incision site minimal, thus maintaining working range without increasing harmful factors
3Device complexity
If conventional actuators are used with limited attitude adjustment, then the structure is simple, but the capability to process complex shapes and deep grooves is insufficient
Solution Approach 1:
The actuator incorporates dynamic attitude adjustment mechanisms at the distal end, allowing the tool to change its orientation and angle independently of the pipe's curvature. This enables processing of complex shapes and deep grooves by adjusting the tool's attitude while maintaining the pipe's streamlined configuration for minimal incision
Solution Approach 2:
The actuator is divided into functionally independent segments: the elongated pipe for positioning, the distal end member for attitude adjustment, and the tool for processing. This segmentation allows each component to perform its specific function optimally, providing complex processing capability while maintaining overall structural simplicity
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
Enables precise and efficient processing of complex shapes and deep grooves with improved rigidity, cooling efficiency, and reduced energy consumption, ensuring accurate tool attitude control and safe medical application.
Implementation Method 1
a hollow outer shell pipe forming an outer shell for the spindle guide section, a rotary shaft provided within a hollow of the outer shell pipe
Implementation Method 2
one or a plurality of attitude altering members reciprocally movably inserted within the guide pipe for altering the attitude of the distal end member
Data Source
AI summary
A remote controlled actuator includes a spindle guide section of an elongated configuration, a distal end member fitted to a tip end of the spindle guide section for alteration in attitude, and a drive unit housing to which a base end of the spindle guide section is connected. The distal end member rotatably supports a spindle then holding a tool. The spindle guide section includes a hollow outer shell pipe, a rotary shaft and a guide pipe, and an attitude altering member for altering an attitude of the distal end member is inserted within the guide pipe. A hollow of the outer shell pipe includes a round hole portion at a center and a grooved portion depressed radially outwardly from the round hole portion. The rotary shaft is arranged within the round hole portion whereas the guide pipe is arranged within the grooved portion.