Laser Skull Cutting Device with Light Interception Board
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Solution Overview
Problem
Current craniotomy methods require tight fixation of the patient's head, pose challenges due to slippery skull conditions, and result in a large cutting margin leading to bone flap instability during closure, increasing operator burden and the risk of damaging surrounding tissue.
Innovation Solution
A skull cutting device utilizing a laser system with an optical fiber, contact portion, support bar, and light interception board to safely and accurately cut the skull, minimizing tissue damage and reducing the need for strong fixation, with features like a detect device for safety and a pulse laser for efficient cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If mechanical drilling and cutting methods are used for craniotomy, then the skull can be effectively cut, but the patient's head must be tightly fixed by dedicated fixing members, increasing patient burden
Solution Approach 1:
The patent replaces mechanical drilling and cutting systems with a laser-based system. The laser beam cuts the skull without requiring mechanical contact or strong fixation of the patient's head, thereby eliminating the need for dedicated fixing members and reducing patient burden while maintaining cutting effectiveness
Solution Approach 2:
The patent introduces a light interception board as an intermediary component that reflects the laser beam. This board allows precise control of the laser path and enables cutting without direct mechanical interaction with the skull, facilitating a less invasive procedure that reduces fixation requirements
2Reliability
If mechanical drilling and cutting methods are used on a slippery skull surface, then the skull can be cut, but the operator bears significant physical and mental burden
Solution Approach 1:
The patent replaces mechanical contact-based cutting with laser cutting, eliminating the friction and slipping issues associated with mechanical tools on a slippery skull surface. The laser beam maintains consistent cutting performance regardless of surface conditions, significantly reducing operator burden
Solution Approach 2:
The laser cutting system operates autonomously without requiring continuous manual adjustment or physical manipulation of the skull surface. The system self-regulates the cutting process, reducing the operator's physical and mental burden while maintaining reliable cutting capability
3Reliability
If a big cutting margin of about 3mm is used, then the skull can be safely cut, but the bone flap becomes small and caves in during closure, requiring expensive titanium fixing members
Solution Approach 1:
The laser cutting system enables precise cutting with minimal margin compared to mechanical methods. The focused laser beam achieves clean cuts with much smaller safety margins, allowing for larger bone flaps that can be closed without caving in, thereby eliminating or reducing the need for expensive titanium fixing members
Solution Approach 2:
The patent changes the cutting parameter from mechanical removal with large margins to laser ablation with minimal margins. This parameter change allows for more precise cutting boundaries, larger bone flaps, and reduced fixation requirements while maintaining cutting safety
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
Enables safe and efficient skull cutting with reduced operator burden, faster procedure times, and minimal bone flap instability, allowing for precise cutting and reduced use of fixation members during closure.
Implementation Method 1
a body (1) that emits a laser (R) introduced from a laser oscillator (200) through an optical fiber (300) from an exit opening (1a) arranged at a distal end
Implementation Method 2
a light interception board (32) that is supported at a distal end of the support bar (31) and that blocks farther advance of the laser (R) by interfering with the laser beam path
Data Source
AI summary
A skull cutting device for cutting a skull by means of laser comprises a body for emitting the laser introduced from a laser oscillator through an optical fiber from an exit opening arranged at a distal end thereof, a contact portion arranged in the body to determine the posture of the body such that a predetermined distance is set between a surface of the skull and the exit opening by touching the surface of the skull in a predetermined mode, a support bar of a predetermined length extending from the body toward the emitting direction of the laser while avoiding the optical path of the laser (R), and a light interception board arranged at a distal end of the support bar to block farther advance of the laser by interfering with the laser beam path.