Manual Patient Positioning Device for Orthopedic Surgery
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Solution Overview
Problem
Existing patient positioning devices for orthopedic surgery are either electrically automated, cumbersome to use, or require sterilization within the sterile surgical field, posing challenges in precision, safety, and efficiency.
Innovation Solution
A manually adjustable patient positioning device configured to operate outside the sterile field, featuring parallel guide rails, anchor rails, and a carriage assembly with a cushion component and anchor lever, allowing for intuitive and efficient joint manipulation without the need for electrical power or sterilization within the surgical environment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If electrically automated patient positioning devices are used, then joint positioning precision is improved, but device complexity and safety hazards increase due to power supply requirements and electronic controls
Solution Approach 1:
The patent replaces electrical automation with a mechanical system featuring a carriage assembly that slides along guide rails, manually adjustable positioning mechanisms, and mechanical locking features. This eliminates power supply requirements and electronic controls while maintaining positioning capability through pure mechanical means.
Solution Approach 2:
The invention extracts and removes the electrical power supply system and electronic control components from the patient positioning device, retaining only the essential mechanical positioning structure. This simplifies the device by eliminating complex electrical systems while preserving the core function of joint positioning.
2Device complexity
If manually adjustable patient positioning devices are used, then device complexity is reduced, but positioning precision and efficiency deteriorate
Solution Approach 1:
The positioning device is segmented into modular components including a carriage assembly, guide rails, cushion component, and anchor mechanism. This segmentation allows each component to be optimized for its specific function while maintaining overall simplicity, enabling precise positioning through coordinated mechanical elements.
Solution Approach 2:
The device incorporates dynamic mechanical elements such as the sliding carriage assembly that can move smoothly along the guide rails and the anchor lever mechanism that provides adjustable locking. These dynamic features enable precise positioning adjustments while keeping the overall device structure simple and manually operable.
3Ease of operation
If patient positioning equipment is used within the sterile field, then surgical access is improved, but sterilization requirements and operational complexity increase
Solution Approach 1:
The positioning device is extracted from the sterile field and repositioned to operate from outside the sterile boundary. The guide rails and carriage assembly are positioned laterally, allowing the mechanical positioning mechanism to function without requiring sterilization, while still providing access to the patient's joint through the patient's body position rather than direct sterile field intervention.
Data Source
AI summary
Various embodiments, aspects and features of the present solution encompass a manually adjustable patient positioning device that is configured to reside on an operating table and outside the sterile field of a surgical environment. A carriage assembly rides along a pair of parallel guide rails and supports a cushioning device. A patient's foot, for example, may be placed on the cushioning device such that repositioning of the carriage assembly along the guide rails causes manipulation of the position and degree of articulation for the patient's knee during an orthopedic surgery.