Abstract: A circulatory heart model (30) is disclosed that is geometrically accurate with respect to corresponding anatomical structures (31, 91, 103, 112, 124). The model (30) provides a closed loop for providing flow through the major anatomical structures (31, 91, 103, 112, 124) corresponding to a modeled biological heart. The model (30) provides a means of pumping fluid through a closed loop flow circuit analogous to the circulatory system by gripping the base of the heart model (30) and squeezing with one's hand. The transparent quality of the heart model (30) enables flow visualization including visualization of anatomical valve function through representative valves (53, 60, 69, 80). The model (3) provides high educational, scientific, and/or amusement value in a device that is economical to produce.

Abstract: A circulatory heart model (30) is disclosed that is geometrically accurate with respect to corresponding anatomical structures (31, 91, 103, 112, 124). The model (30) provides a closed loop for providing flow through the major anatomical structures (31, 91, 103, 112, 124) corresponding to a modeled biological heart. The model (30) provides a means of pumping fluid through a closed loop flow circuit analogous to the circulatory system by gripping the base of the heart model (30) and squeezing with one's hand. The transparent quality of the heart model (30) enables flow visualization including visualization of anatomical valve function through representative valves (53, 60, 69, 80). The model (3) provides high educational, scientific, and/or amusement value in a device that is economical to produce.

Abstract: An amusement device concerned generally with a construction type educational toy. The amusement device provides unique functionality via board design and piece structure allowing relative motion between coupled playing pieces. The construction apparatus is of the type having rotary path-forming pieces that can be located in numerous positions on the base board. The pieces are removably interfitting and allow the construction of variable paths and patterns. The amusement device incorporates magnetism to perform relative rotary motion. A circular pattern of permanent magnets are included in construction pieces to allow numerous magnetically coupled rotary pieces to undergo relative rotation analogous to a gear train. In addition to toy or game amusement device, the present invention also embodies an education and demonstration device whereby the assembly of magnetically coupled rotary pieces provides the interactive demonstration of a gear train machine mechanism.