Rotatable Protector Device for Dental Bone Extraction
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Solution Overview
Problem
Current bone extraction methods in dental surgery require extensive force and multiple cutting points, causing discomfort for patients and risk to surrounding tissue, as they rely on traditional instruments like Lindemann burs and piezosurgery devices.
Innovation Solution
A surgical instrument combining a machining device with a trephine bur and a protector device, where the protector device is rotatably coupled to the machining device, allowing for bone extraction with a single predetermined breaking point and minimizing tissue damage by keeping the protector device stationary, thus reducing the need for extensive force and multiple cuts.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If traditional bone extraction methods using Lindemann bur or piezosurgery device are used, then bone can be extracted, but extensive force needs to be applied and multiple cutting points are required, causing discomfort to patient and requiring great technical skill
Solution Approach 1:
The bone extraction process is divided into two functional components: the machining device with multiple cutting teeth for efficient bone removal, and the protector device that segments the extraction path to allow single-point entry. This segmentation enables the cutting teeth to work progressively while limiting external access to only one point, reducing technical difficulty.
Solution Approach 2:
The protector device acts as an intermediary between the machining device and the surrounding tissue. It mediates the extraction process by providing a controlled entry path and protecting surrounding soft tissue from direct contact with the rotating cutting teeth, thereby simplifying the operator's task while maintaining extraction efficiency.
2Productivity
If traditional bone extraction methods are used, then bone can be extracted, but extensive force needs to be applied, causing discomfort for the patient
Solution Approach 1:
The protector device is positioned and secured before the bone extraction begins. This preliminary action creates a pre-established safe pathway and protects surrounding tissue in advance, allowing the machining device to proceed with cutting without causing discomfort or injury to the patient during the extraction process.
Solution Approach 2:
The protector device serves as a protective intermediary between the machining device and the patient's surrounding soft tissue. It absorbs and redirects forces, preventing direct transmission of cutting forces to sensitive tissues, thereby reducing patient discomfort while maintaining extraction productivity.
3Productivity
If traditional bone extraction methods are used, then bone can be extracted, but surrounding soft tissue may be injured by the surgical tool
Solution Approach 1:
The protector device functions as a protective intermediary that physically separates the machining device from surrounding soft tissue. It provides a barrier that prevents direct contact between the rotating cutting teeth and vulnerable tissues, eliminating the harmful effect of tissue injury while preserving the efficiency of bone extraction through the protected pathway.
Solution Approach 2:
The protector device acts as a protective shell or barrier that envelops the machining device during operation. This shell structure provides continuous protection around the cutting area, preventing stray cuts or accidental contact with surrounding tissue, thereby eliminating tissue injury risks while maintaining extraction productivity.
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 gentle and efficient bone extraction with reduced stress for the patient and improved protection of surrounding tissue, allowing for the removal of a crescent-shaped bone piece without the need for multiple cuts, making the procedure more comfortable and precise.
Implementation Method 1
the protector device is rotatably coupled to a bearing element of the machining device
Data Source
AI summary
A surgical instrument, in particular for use in dental surgery, includes a machining device and a protector device. The machining device has a shaft with a connection region and a hollow cylindrical head, wherein an active region, in particular for machining and/or for grinding of bone, is formed at a distal edge of the head. The protector device surrounds the head, at least in regions, and is rotatably coupled with a bearing element of the machining device extending, at least in regions, inside of the head.