Hook-Shaped Comb Periosteal Elevator for Fiber Elongation
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Solution Overview
Problem
Conventional periosteal elevators fail to effectively elongate subcutaneous fibers during dental implant surgeries, leading to potential swelling, contamination, and prolonged recovery due to the need for multiple cuts, which can damage dermal tissues and increase the risk of infection.
Innovation Solution
A periosteal elevator with a hook-shaped comblike structure that combs and elongates subcutaneous fibers, reducing the need for additional cuts by stretching the fibers without causing excessive damage, thereby facilitating smoother suturing and minimizing postoperative complications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If multiple cuts are made at the subcutaneous fibrous tissues to break fibers and achieve stretching for suturing, then the stretchable length of the tissues is increased, but the risk of swelling, contamination, and damage to dermal tissues increases
Solution Approach 1:
The cutting edge is segmented into multiple cutting teeth arranged in a row, each capable of making individual cuts through the subcutaneous fibrous tissues. This segmentation allows the fibers to be broken and stretched incrementally along the tissue, achieving the required stretchable length while distributing the mechanical stress and minimizing damage to dermal tissues compared to a single deep cut
Solution Approach 2:
Instead of making deep vertical cuts perpendicular to the tissue surface to break fibers, the invention inverts the approach by making multiple shallow cuts along the grain of the fibers. The cutting teeth are arranged to cut parallel to the fiber direction, stretching the tissue gradually without penetrating deeply into the dermis, thereby reducing swelling and contamination risks
2Ease of operation
If a conventional periosteal elevator is used to separate subcutaneous fibrous tissues from bone, then the tissues are exposed, but the fibers cannot be effectively elongated, requiring additional cutting steps
Solution Approach 1:
The invention merges the functions of the periosteal elevator and the fiber-cutting tool into a single instrument. The body portion maintains the elevator's ability to separate and expose subcutaneous fibrous tissues from bone, while the cutting edge with multiple teeth is integrated at the distal end, enabling the same tool to both expose and process the tissues, thereby eliminating the need for separate cutting steps and reducing surgical time
Solution Approach 2:
The periosteal elevator is transformed into a multi-functional tool that can perform multiple operations: separating subcutaneous fibrous tissues from bone using the body portion, making precise cuts through the tissues using the cutting teeth, and stretching the fibers to achieve the required length. This universality allows a single instrument to replace what previously required multiple specialized tools and steps
Data Source
AI summary
A periosteal elevator applied to comb and elongate a subcutaneous fibrous tissue includes a stem bar, a first spoon end, and a plurality of hook-shaped comblike structures separated to each other. The first spoon end, fixed to a first end portion of the stem bar, further has a spoon-end edge. The plurality of hook-shaped comblike structures, fixed to the spoon-end edge, further have an extension portion and a hook-like comb portion. The extension portion is extended from the spoon-end edge, and the hook-like comb portion is extended from the extension portion. When the subcutaneous fibrous tissue is cut and separated from a bone tissue, the plurality of hook-shaped comblike structures can comb and elongate the subcutaneous fibrous tissue. In addition, a comb surface of the hook-like comb portion and an inner-side extension surface of the extension portion are together to form an angle within a range of 60 and 100 degrees.