초록 ▼

The present invention includes a biopsy needle for use in a biopsy gun or as surgical instrument, capable of taking multiple samples, and a guiding needle holder for holding a biopsy needle. The biopsy needle includes an inner needle, also called a stylet, and an outer needle, also called a cannula,

The present invention includes a biopsy needle for use in a biopsy gun or as surgical instrument, capable of taking multiple samples, and a guiding needle holder for holding a biopsy needle. The biopsy needle includes an inner needle, also called a stylet, and an outer needle, also called a cannula, and a guiding needle holder. The stylet has a recess in the vicinity of its distal end which receives the tissue sample. The guiding needle holder includes an integrated spacer, and first and second connecting elements. The first connecting element holds the proximal end of the cannula and is displaceably attached along the length of the integrated spacer. The second connecting element holds the proximal end of the stylet and is fixedly attached to the distal end of the integrated spacer. The connecting elements each have an opening that facilitates insertion of the biopsy needle into a known biopsy gun in either the cocked or uncocked position. In an alternate embodiment, the guiding needle holder includes an integrated spacer that fixedly holds the stylet, and a connecting element that displaceably holds the cannula.

대표청구항 ▼

[ What is claimed is:] [1.] An integrated biopsy instrument for use in a biopsy gun comprising:a hollow outer needle;an inner needle extending through said hollow outer needle, wherein said inner needle includes a recess near the distal end thereof, said inner needle and said outer needle movable re

[ What is claimed is:] [1.] An integrated biopsy instrument for use in a biopsy gun comprising:a hollow outer needle;an inner needle extending through said hollow outer needle, wherein said inner needle includes a recess near the distal end thereof, said inner needle and said outer needle movable relative to each other permitting selective encapsulation of said recess on said inner needle by said outer needle an integrated spacer attached to a proximal end of said inner needle, said integrated spacer including a hole and a slot;a connecting element attached to a proximal end of said outer needle; and including a first annular flange displaceably engaged to the slot of the integrated spacer; anda second connecting element coupled to said proximal end of said inner needle and including a second annular flange fixedly engaged to the hole of said integrated spacer, said connecting element engaged to said integrated spacer for relative movement therein whereby said inner needle is selectively moved to a position exposing the recess of said inner needle and said outer needle is moved to a position encapsulating the recess of said inner needle when said biopsy instrument is contained within a biopsy gun, wherein said inner needle is operatively fixed to said integrated spacer when said inner needle and outer needle are moved to expose and encapsulate the recess and wherein the biopsy instrument is removable from the biopsy gun and wherein said connecting element remains engaged to said integrated spacer and said inner needle remains operatively fixed to said integrated spacer when the biopsy instrument is removed from the biopsy gun.