Skull Clamp Trigger Actuator for Single-User Arm Adjustment
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Solution Overview
Problem
Existing skull clamps lack an efficient and user-friendly mechanism for adjusting and locking the arms to accommodate different head sizes, often requiring assistance and not being easily sterilizable.
Innovation Solution
A skull clamp design featuring an opening device with a trigger-actuated actuator that allows for selective locking and adjustment of the arms, enabling single-user operation and easy cleaning, utilizing a combination of teeth, slots, and springs for secure alignment and disengagement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a skull clamp uses adjustable arms with locking mechanisms to accommodate different head sizes, then the adaptability is improved, but the device complexity increases
Solution Approach 1:
The skull clamp is divided into separate modular components including adjustable arms, locking mechanisms, and opening devices that can function independently. Each arm can be adjusted and locked separately, allowing for flexible configuration while maintaining manageable complexity through functional segmentation.
Solution Approach 2:
The skull clamp employs dynamic adjustable arms that can be selectively positioned and locked at various angles and lengths. The opening device provides dynamic control over the locking mechanism, enabling smooth transitions between locked and unlocked states for easy adjustment while maintaining secure fixation when locked.
2Reliability
If a skull clamp includes a locking mechanism to secure arms in position, then the reliability is improved, but the ease of operation deteriorates
Solution Approach 1:
The opening device is designed to be actuated by the user through simple manual operation, eliminating the need for external assistance. The mechanism allows the user to independently unlock, adjust, and re-lock the arms without requiring help from another person, making the device self-servicing in terms of operation.
Solution Approach 2:
The opening device acts as an intermediary mechanism between the user and the locking mechanism. It translates simple user input into the complex motions required to unlock and adjust the arms, while maintaining secure locking when engaged. This intermediary simplifies the user interface while preserving the reliability of the locking function.
3Reliability
If a skull clamp has a complex locking mechanism to ensure secure fixation, then the reliability is improved, but the ease of manufacture deteriorates
Solution Approach 1:
The locking mechanism is segmented into discrete, standardized components that can be manufactured independently using conventional machining processes. This modular approach allows each component to be produced separately with standard tolerances, simplifying manufacturing while maintaining the overall reliability of the locking system when assembled.
Data Source
AI summary
A head fixation device in the form of a skull clamp comprises an opening device having an actuator positioned along an upright portion of the skull clamp near where a pin assembly contacts a patient's head for stabilization. The opening device can be actuated such that the relative distance between arms of the skull clamp can be opened, closed, or adjusted. The opening device is substantially positioned within one of the arms of the skull clamp. In some versions the skull clamp further comprises an attachment feature having an offset configuration.