| 摘要 |
An arrowhead having a pivotal blade rotatably mounted to a corresponding arrowhead body such that the pivotal blade is selectively positionable at different cutting diameters when in corresponding different penetrating configurations so as to enable the arrowhead to have differing penetration and tissue volume cutting capacities. The hinge structure rotatably mounting the pivotal blade to its arrowhead body is positionable at a plurality of different spatial locations relative to the arrowhead body. The blade stop surface, such as a sloped blade abutting surface of a blade stop washer, that the pivotal blade abuts against when penetrating an object or when rotated to an open position is positionable at a plurality of different spatial locations and/or orientations relative to the arrowhead body.
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