Abstract: A surgical cloth intended as a protection of the wound edges of an incision. The surgical cloth is provided with a central hole, which uncovers the operation area. A hem surrounds the hole and a rigid but flexible thread is introduced into the hem through an opening. The thread has a loop at one end and the opposite end of the thread is passed through said loop. The size of the hole can be adjusted by tightening or loosening the thread.

Abstract: A hygienic and contamination-free transfer of blood or corresponding fluids from a cylindrical collecting container, such as a test tube, to a pipette is most desirable for instance at determination of the sedimentation rate of the blood corpuscles; the invention concerns a device for accomplishing such a transfer comprising in combination a tube formed pipette of a compressible, transparent material, a cylindrical body designed to cooperate with the interior of the container as a piston/cylinder arrangement; the cylindrical body being provided at one end of the tube and having an axial through hole adapted to allow communication between the tube and the container.