Double Single Beveled Broadhead Multi-Flap Wound Design
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Solution Overview
Problem
Traditional broadhead designs, such as wedge-shaped broadheads, create single slit wounds that can close in elastic tissue, leading to reduced fatality and difficulty in tracking the animal, and also prevent lung collapse, resulting in decreased penetration and effectiveness in hunting.
Innovation Solution
A double single beveled broadhead design with two pairs of blades, one pair forming a wedge shape and the other offset by 90 degrees, both with single bevels, which creates a 4-flap entrance and exit wound, allowing atmospheric entry and maximizing penetration and tissue damage, while maintaining structural integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If a wedge-shaped broadhead is used, then the cutting ability is improved, but the wound closes in elastic tissue reducing fatality and tracking ease
Solution Approach 1:
The broadhead is divided into multiple blades (at least three blades) arranged radially around the central axis, creating multiple separate cutting edges that form a multi-flap wound pattern instead of a single slit. This segmentation prevents wound closure by distributing the cutting action across multiple tissue flaps.
Solution Approach 2:
The blades are arranged in a radial pattern around the central axis, extending outward in multiple dimensions rather than a single plane. This three-dimensional arrangement creates a multi-flap wound that remains open, preventing tissue closure while maintaining cutting effectiveness.
2Device complexity
If a single slit wound is created, then the cutting action is simple, but lung collapse is prevented reducing ethical dispatch
Solution Approach 1:
The single cutting action is segmented into multiple blade edges that create separate tissue flaps. Each blade creates its own wound flap, and the combination of multiple flaps prevents wound closure while allowing atmospheric entry into the chest cavity for lung collapse.
Solution Approach 2:
The wound configuration transitions from a single-planar slit to a three-dimensional multi-flap structure. The radial arrangement of blades creates flaps that extend in multiple directions, preventing the wound from closing and enabling atmospheric entry for rapid ethical dispatch.
3Device complexity
If a single slit wound is created, then the wound structure is simple, but drag on the arrow shaft and fletching increases decreasing penetration
Solution Approach 1:
The cutting action is segmented into multiple radial blades that create separate tissue flaps. This segmentation reduces the overall drag on the arrow shaft and fletching compared to a single large slit, while maintaining effective tissue damage and penetration depth.
Solution Approach 2:
The wound structure transitions from a single-planar configuration to a three-dimensional radial arrangement. This dimensional change optimizes the balance between drag reduction and penetration effectiveness by distributing tissue displacement across multiple smaller flaps rather than one large opening.
Data Source
AI summary
A double single beveled broadhead. The double single beveled broadhead includes a first pair of blades. The first pair of blades are in a single plane, are opposite one another, forming a wedge shape and are both single beveled. The double single beveled broadhead also includes a second pair of blades. The second pair of blades are in a single plane, the plane of the second pair of blades is offset relative to plane of the first pair of blades by 90 degrees and are both single beveled. The double single beveled broadhead further includes an attachment, where the attachment allows the double single beveled broadhead to be attached to an arrow shaft.