Abstract: A disposable lancet for puncturing skin is disclosed herein. The lancet comprises a T-shaped housing, a reciprocally movable elongated body that embeds a puncturing needle and a leaf spring to bias the elongated body towards a safe neutral position, where the puncturing device is retracted in the housing. The elongated body is generally cross-shaped and is guided by projections in the housing that define a cross-shaped passage. The leaf spring is located in the handle portion of the T-shaped housing and cooperates with the elongated body via a slit provided in the elongated body. The lancet is operated by pressing a portion of the elongated body that extends from the handle portion of the housing at one end. The lancet is then in a puncturing position, where the puncturing needle extends out of the housing at the distal end thereof. The elongated body returns to the safe neutral position when the force applied to the elongated body is no longer sufficient to overcome the biasing action of the leaf spring.

Abstract: A manipulative puzzle game consisting of a rectangular parallelepiped box having a transparent front wall. A plurality of identical cubes are disposed within the box. At least one plane face of each cube bears a visually distinguishing feature. The objective of the game is to arrange the cubes by manipulating the box, so that the visually distinguishing features of the cubes are in a selected order. The number of cubes is one less than the capacity of the box for such cubes. The width of the side walls of the box is slightly greater than the diagonal of a face of a cube, and less than twice the edge length of a cube, so that the stacks or layers of cubes are of a thickness of the edge dimension of a cube, i.e., one cube thick, and so that careful manipulation of the box by horizontal twisting or by tapping the box causes the rotation of at least one of the cubes about a central vertical axis.