Biopsy instrument stylet and cannula assembly

A biopsy stylet and cannula assembly suitable for use with a biopsy instrument having a first drive rod and a second drive rod, comprising:

• a cannula mount having a tubular cannula secured thereto and projecting forwardly therefrom, wherein said cannula mount has first recess means in a back side of said cannula mount for receiving a first drive rod of the biopsy instrument therein;
• and
• a stylet mount having a stylet secured thereto and projecting forwardly within said tubular cannula and slidable with respect to said cannula, wherein said stylet mount has second recess means in a back side of said stylet mount for receiving a second drive rod of the biopsy instrument therein, wherein said stylet mount and said cannula mount slide with respect to each other and collectively cooperate to define a generally rectangular frontal profile receivable in a generally rectangular opening acting as a guide way in a front end of the biopsy instrument for surrounding the first drive rod and the second drive rod.

A biopsy stylet and cannula assembly suitable for use with a biopsy instrument having a first drive rod and a second drive rod, comprising:

• a cannula mount having a tubular cannula secured thereto and projecting forwardly therefrom, wherein said cannula mount has first recess means in a back side of said cannula mount for receiving a first drive rod of the biopsy instrument therein;
• and
• a stylet mount having a stylet secured thereto and projecting forwardly within said tubular cannula and slidable with respect to said cannula, wherein said stylet mount has second recess means in a back side of said stylet mount for receiving a second drive rod of the biopsy instrument therein, wherein said cannula mount includes a bottom portion and a forward portion, wherein said bottom portion has a top side along which said stylet mount slides, and wherein said forward portion of said cannula mount projects above said top side of said bottom portion in front of said stylet mount.

A biopsy stylet and cannula assembly suitable for use with a biopsy instrument having a first drive rod and second drive rod, comprising:

• a cannula mount having a tubular cannula secured thereto and projecting forwardly therefrom, wherein said cannula mount has first recess means in a back side of said cannula mount for receiving a first drive rod of the biopsy instrument therein;
• and
• a stylet mount having a stylet secured thereto and projecting forwardly within said tubular cannula and slidable with respect to said cannula, wherein said stylet mount has second recess means in a back side of said stylet mount for receiving a second drive rod of the biopsy instrument therein, wherein the first drive rod and the second drive rod are oriented horizontally, and wherein said first recess means in said cannula mount is positioned directly vertically below said second recess means in said stylet mount.