초록 ▼

A biopsy instrument includes a tube having a finger-like projection at one end and a canula slidably disposed in the tube. After insertion of the biopsy instrument into a tissue, the tube is displaced on the canula so that the projection passes through an aperture in the canula to sever the tissue s

A biopsy instrument includes a tube having a finger-like projection at one end and a canula slidably disposed in the tube. After insertion of the biopsy instrument into a tissue, the tube is displaced on the canula so that the projection passes through an aperture in the canula to sever the tissue sample in the canula bore from the tissue. The projection retains the severed sample in the canula bore during withdrawal of the biopsy instrument from the tissue. A holding and control assembly having a first and second spring is provided for moving the tube and canula in a forward direction to penetrate the tissue and then substantially consecutively moving the tube in the forward direction to sever and retain the sample in the canula bore.

대표청구항 ▼

[ What is claimed is:] [1.] A holder for holding and controlling a biopsy instrument for extracting a segment from tissue or the like, the holder comprising:a first part adapted for retaining a first part of the biopsy instrument;a second part slidably disposed with respect to the first part;a third

[ What is claimed is:] [1.] A holder for holding and controlling a biopsy instrument for extracting a segment from tissue or the like, the holder comprising:a first part adapted for retaining a first part of the biopsy instrument;a second part slidably disposed with respect to the first part;a third part adapted for retaining a second part of the biopsy instrument, the third part being slidably disposed for movement in the first part;a fourth part adapted for retaining a third part of the biopsy instrument, the fourth part being slidably disposed in the first part;stroke control means for adjustably limiting movement of the third part in the first part; andfirst and second spring means associated with the third and fourth part of the holder and operable for moving the second and third part of the biopsy instrument in a distal direction.