Abstract: A surgical instrument includes a rod and a push portion. The push portion includes a first end connected to an end of the rod and a second end having a blade portion. The push portion includes a plurality of grooves. The plurality of grooves is recessed in a surface of the push portion and is spaced from each other. Each two adjacent grooves has a rib formed therebetween. A top face of a cross section of each rib is the surface of the push portion. Each rib has a guiding face on the cross section of the push portion. The guiding face is connected to the surface of the push portion. The guiding face faces a rotating direction of the rod. An angle between the guiding face and the surface of the push portion in the cross section is greater than 90°.

Abstract: An air inflatable massage cushion contains: a body and a control box which is connected with the body via the multiple air tubes. The body includes multiple airbags communicating with at least one air channel via multiple air conduits, wherein a respective air channel is in connection with some of the multiple airbags, different air channels are connected with the multiple airbags which are intersected with one another. A respective one airbag does not communicate with at least one adjacent airbag so as to inflate or deflate airs in some airbags not communicate with one another via different air channels, thus inflating and deflating the airs of the airbags at different positions of the body to obtain air permeability and a massage effect.

Abstract: A method for measuring a physical condition of an individual by using a post-exercise heart rate recovery rate is provided and, has steps of: acquiring a heart rate of the individual during a recovery period after a physical activity of the individual; calculating a heart rates recovery rate of the individual using a nonlinear regression equation, which includes a parameter representing the rate of heart rate recovery; and determining the physical condition of the individual based upon the parameter. Hereby, the accuracy of measuring the heart rate recovery rate is better than other conventional methods.