Scaled Head Frame Positioner with Velcro Adjustments
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Solution Overview
Problem
Current stereotactic framework systems face challenges in precisely and easily positioning a head ring or frame onto a patient's skull and securing it to a CT or treatment table, leading to potential misalignment and pressure issues on diagnostic and treatment equipment.
Innovation Solution
A scaled head frame positioner with triangular support members and Velcro adjustments, along with a tabletop adapter featuring a U-shaped bracket, is used to securely attach the head frame to the patient's skull and treatment table, ensuring precise positioning and stability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If plastic blocks are used to support the patient's head with the stereotactic head frame, then the head frame can be supported, but the positioning precision is insufficient and pressure is exerted on the localizer box
Solution Approach 1:
The patent introduces a head frame positioner as an intermediary device between the patient's head and the support structure. This positioner includes a rigid ring with connectors that interface with the head frame, and support members that contact the patient's head, thereby eliminating direct pressure on the localizer box while improving positioning precision through scaled indicia
Solution Approach 2:
The support system is divided into separate functional components: a rigid ring with connectors for attaching to the head frame, support members for contacting the patient's head, and adjustment members for positioning. This segmentation allows each component to be optimized for its specific function, improving overall positioning precision while protecting equipment
2Measurement precision
If conventional positioning methods are used, then the head frame can be attached to the patient's head, but the positioning is not precise and alignment with the coordinate system is difficult
Solution Approach 1:
The positioner incorporates scaled indicia (measurement markings) that provide visual feedback for precise positioning. These markings allow operators to easily read and adjust the position of the head frame relative to the patient's head and the coordinate system, improving both precision and ease of operation
Solution Approach 2:
The patent replaces conventional mechanical positioning methods with a system that uses scaled measurement markings and adjustable connectors. This substitution allows for more precise alignment with the coordinate system while maintaining ease of adjustment through the connector mechanism
3Reliability
If the head frame is not securely fixed, then the positioning process is simple, but movement during procedures occurs leading to misalignment
Solution Approach 1:
The positioner integrates multiple functions into a single device: the rigid ring provides structural support, connectors attach to the head frame, support members contact the patient's head, and adjustment members enable positioning. This merging of functions achieves secure fixation while maintaining relatively simple operation
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
The solution enables precise and stable fixation of the head frame, preventing movement during procedures and reducing pressure on diagnostic equipment, thereby ensuring accurate alignment and prolonged equipment integrity.
Implementation Method 1
The positioner employs a generally triangular shaped member with Velcro tapes fixed at each corner. The tapes have measurement markings, such as measurement tapes. The positioner supports the head frame with the tapes engaging means on the frame
Implementation Method 2
the tabletop adapter includes a generally U-shaped bracket secured to a support to be placed on the tabletop. The bracket is attachable to the head frame of the patient to hold his head in a desired position
Data Source
AI summary
A scaled head frame positioner and tabletop adapter are provided. The positioner may be employed for any neurosurgical procedure that requires fixed positioning of the stereotactic head frame or ring onto a patient's skull. The positioner employs a generally triangular shaped member with Velcro tapes fixed at each corner. The tapes have measurement markings, such as measurement tapes. The positioner supports the head frame with the tapes engaging means on the frame and fastened back to themselves, with markings indicating distances to adjust the position of the frame about the patient's head. Furthermore, the tabletop adapter clamps the patient with a stereotactic head frame onto a CT or treatment table. The tabletop adapter includes a generally U-shaped bracket secured to a support to be placed on the tabletop. The bracket is attachable to the head frame of the patient to hold his head in a desired position.