Surgical Tool Chuck Assembly for Sleeve Deformation Prevention
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Solution Overview
Problem
Conventional surgical tool-fixing devices for orthopedic surgical robots suffer from deformation and reduced durability due to the sleeve being screw-coupled to the chuck device part, leading to increased maintenance costs and potential negligent accidents.
Innovation Solution
The surgical tool-fixing device couples the sleeve directly to a sleeve supporting portion of the holder part, eliminating the need for screw-coupling to the chuck device part, thereby preventing deformation and improving durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the sleeve is screw-coupled to the chuck device part, then the assembly is simple and easy to manufacture, but the sleeve and chuck device part deform under load, reducing durability
Solution Approach 1:
The device is divided into separate functional modules: the holder part with sleeve supporting portion, the chuck device part, and the operating nut. This segmentation allows the sleeve to be supported by a dedicated structure rather than relying on the chuck device part, preventing deformation while maintaining assembly simplicity through modular design.
Solution Approach 2:
The sleeve supporting portion acts as an intermediary structure between the holder part and the sleeve. This intermediate support element bears the load and prevents the sleeve from deforming under operational forces, eliminating the need for the chuck device part to provide structural support.
2Device complexity
If the sleeve is screw-coupled to the chuck device part, then the structure is compact, but external force causes deformation and malfunction, increasing maintenance costs
Solution Approach 1:
By separating the support function into a dedicated sleeve supporting portion, the design protects critical components from deformation and damage, reducing the frequency of repairs and replacement while maintaining a compact overall structure.
3Device complexity
If the sleeve is screw-coupled to the chuck device part, then the design is simple, but deformation occurs under load, reducing operational stability
Solution Approach 1:
The sleeve supporting portion serves as a mediator that stabilizes the sleeve during operation by providing dedicated support. This intermediate structure prevents deformation under load, ensuring operational stability while adding minimal complexity to the overall design.
4Ease of manufacture
If the sleeve is screw-coupled to the chuck device part, then assembly is straightforward, but deformation and malfunction increase surgery downtime
Solution Approach 1:
The modular segmented design with dedicated support structures prevents deformation and malfunction, ensuring reliable operation throughout the surgical procedure and minimizing downtime between cases through reduced maintenance requirements.
Data Source
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AI summary
The disclosure relates to a surgical tool-fixing device for a surgical robot, and more particularly to a surgical tool-fixing device for a surgical robot, which stably holds and supports a sleeve for supporting a shaft of a surgical tool, thereby preventing deformation of related parts and improving durability. The surgical tool-fixing device for a surgical robot includes: a sleeve supporting a surgical tool including a shaft; a chuck device part including a chuck body to which the sleeve is coupled, chucks selectively provided inside the chuck body and selectively clamping the shaft to hold the surgical tool, and an operation force applying portion applying operation forces for clamping and unclamping operations of the chucks; and a holder part installing the chuck device part thereon, mounted to a distal end of a robot arm, and including a sleeve supporting portion holding and supporting the sleeve not to shake, wherein the sleeve includes a first sleeve fastening portion formed in a direction facing the sleeve supporting portion of a hollow sleeve body formed with a shaft insertion hole, and the sleeve supporting portion is formed with a second sleeve fastening portion to couple with the first sleeve fastening portion.