Spinal Surgery Patient Positioner With Adjustable Lordosis Correction
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Solution Overview
Problem
Traditional patient positioning methods for minimally invasive spine fusion surgeries are insecure and do not aid in correcting or reducing spinal deformities or fractures, posing risks during surgery.
Innovation Solution
A patient positioning system comprising active and passive positioner assemblies that dynamically adjust and lock into place, using adjustable pads and arms to create a forced lordosis curve, securing the patient and reducing spinal deformities before surgery.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional taping method with axillary roll and bolster is used to position patient, then patient can be positioned in lateral decubitus position, but positioning is not secure and does not aid in correcting spinal deformities
Solution Approach 1:
The positioning system is divided into multiple independent positioner assemblies (first positioner assembly and second positioner assembly) that can be separately adjusted and secured to the table. Each assembly independently contacts and stabilizes the patient, providing secure positioning without requiring a single complex device.
Solution Approach 2:
The positioner assemblies incorporate adjustable components including positioner arms with multiple degrees of freedom, adjustable pads, and dynamic positioning capabilities that allow the system to adapt to different patient anatomies and surgical requirements while maintaining security.
2Adaptability or versatility
If traditional positioning method is used, then surgery can proceed in lateral position, but spinal deformities and fractures cannot be reduced before incision
Solution Approach 1:
The system enables preliminary reduction of spinal deformities and fractures by applying controlled forces through the positioner assemblies before the surgical incision is made. The adjustable pads and positioner arms can be configured to apply corrective forces to specific spinal regions during the positioning phase.
Solution Approach 2:
The positioner assemblies allow adjustment of multiple parameters including pad position, arm angle, and contact force to optimize spinal deformity reduction while maintaining ease of operation through systematic adjustment mechanisms.
3Reliability
If adjustable positioner assemblies are implemented, then patient positioning security and spinal deformity reduction are improved, but device complexity increases
Solution Approach 1:
Each positioner assembly is designed as a multi-functional unit that combines patient support, spinal deformity reduction, and secure fixation capabilities. The assemblies can perform multiple functions simultaneously, reducing the need for separate devices and justifying the complexity through enhanced versatility.
Data Source
AI summary
A patient positioning system including an active positioner assembly including: a pad; a positioner arm coupled to the pad; and an adjustment hub coupled to the positioner arm and including a lock, the lock configured to lockably maintain a position of the positioner arm with respect to the adjustment hub; and a passive positioner assembly configured to abut the patient opposite the active positioner assembly to securely hold the patient between the passive positioner assembly and the active positioner assembly.