Surgical apparatus with force sensor for extraction of substances within the body

A surgical apparatus for extraction of substances within a body of a human or animal comprising:

• an inner cannula;
• an extraction receptacle secured to said inner cannula, said extraction receptacle being adapted to grip substances to be extracted from the body;
• a force sensor including a biasing member;
• and
• a swivel, wherein said biasing member is connected to the swivel and wherein said inner cannula is operatively connected to said biasing member at an end of said inner cannula opposite said extraction receptacle, said biasing member exerting a biasing force biasing said inner cannula to pull said extraction receptacle in a direction toward said force sensor, wherein resistive forces on said extraction receptacle during extraction of a substance from the body act against said biasing force and move said biasing member.