Patent ID: 6883639

Claim:
A stethoscope comprising: a pair of branches, each of which includes an elongate ear tube section having a first end adapted to be plugged into an ear of a wearer, and a second end opposite to said first end, and a bent clip tube section having a coupling end portion connected to said second end of said ear tube section, a resilient operating end portion opposite to said coupling end portion, and a curved intermediate fulcrum portion interconnecting said coupling end portion and said operating end portion; and a rubber tube connected to said operating end portions of said clip tube sections of said branches and in fluid communication with said branches; said intermediate fulcrum portion of said clip tube section of each of said branches having a concave outer surface that faces away from the other of said branches, and a convex inner surface that faces toward the other of said branches; said intermediate fulcrum portions of said clip tube sections of said branches abutting against each other; said operating end portions of said clip tube sections of said branches forming a press space therebetween; said operating end portions of said clip tube sections of said branches being depressible toward each other so as to drive said ear tube sections to move from a clamping position, where said first ends of said ear tube sections of said branches are adapted to be plugged into the ears of the wearer, to a releasing position, where said first ends of said ear tube sections of said branches are moved away from the ears of the wearer.