Concentric tubes will allow us to cut away from the handle the distinctive curves in the middle. The distance between the Inner Radius and Outer Radius is 4 in each case, but as they get larger, they have more sides segments. Be sure to drop the default value of Height Segments from 5 to 1, as fewer segments is better when the height of the tube doesn't feature any curvature. A Height value of 5 is enough.
Once the text objects are extruded and cleaned, we can Boolean them where they overlap the scalpel model and then clean up the result.
Usually, Boolean operations triangulate participating edges, and sometimes the result is not very tidy. To reduce complications it really helps to frame the part that will be joined or subtracted so that connecting edges are contained close to that area.
The previous object is an extruded Spline. Extruding it gives us the basis for the first subtract operation. Select the handle and choose Create | Compound Objects...