Vacuum assisted biopsy device
First Claim
Patent Images
1. A biopsy device, comprising:
- a stylet having a lumen with an open proximal end and a tissue receiving opening near a distal end thereof;
an outer cannula slidably disposed over the stylet, the outer cannula having an open distal end with a cutting edge formed thereon; and
a vacuum chamber in fluid communication with the lumen of the stylet,wherein the outer cannula is configured to be actuated so as to causes a vacuum to be delivered to the tissue receiving opening through the lumen of the stylet before the outer cannula advances distally over the tissue receiving opening, andwherein the outer cannula is mechanically connected to the vacuum chamber such that advancement of the outer cannula over the stylet causes movement of a wall of the vacuum chamber, thereby expanding the vacuum chamber.
8 Assignments
0 Petitions
Accused Products
Abstract
A biopsy device having a stylet, an outer cannula, and a vacuum chamber is disclosed. The stylet includes a lumen with an open proximal end and a tissue receiving opening near a distal end thereof. The outer cannula is slidably disposed over the stylet and has an open distal end with a cutting edge formed thereon. The vacuum chamber is in communication with the lumen of the stylet. Actuation of the outer cannula causes a vacuum to be delivered to the tissue receiving opening through the lumen of the stylet before the outer cannula advances distally.
-
Citations
9 Claims
-
1. A biopsy device, comprising:
-
a stylet having a lumen with an open proximal end and a tissue receiving opening near a distal end thereof; an outer cannula slidably disposed over the stylet, the outer cannula having an open distal end with a cutting edge formed thereon; and a vacuum chamber in fluid communication with the lumen of the stylet, wherein the outer cannula is configured to be actuated so as to causes a vacuum to be delivered to the tissue receiving opening through the lumen of the stylet before the outer cannula advances distally over the tissue receiving opening, and wherein the outer cannula is mechanically connected to the vacuum chamber such that advancement of the outer cannula over the stylet causes movement of a wall of the vacuum chamber, thereby expanding the vacuum chamber. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
-
-
9. A biopsy device, comprising:
-
a stylet and an outer cannula movably mounted to a handpiece, the stylet having a lumen with an open proximal end and a tissue receiving opening disposed adjacent a distal end thereof and in communication with the lumen; an outer cannula slidably mounted over the stylet, the outer cannula having an open distal end with a cutting edge formed thereon; and a vacuum chamber in fluid communication with the lumen of the stylet, wherein the stylet is configured to be advanced distally with respect to the handpiece and the outer cannula to expose the tissue receiving opening, the outer cannula is configured to be actuated so as to cause a vacuum to be delivered to the tissue receiving opening through the lumen of the stylet before the outer cannula advances distally over the tissue receiving opening, and the outer cannula is mechanically connected to the vacuum chamber such that advancement of the outer cannula over the stylet causes movement of a wall of the vacuum chamber, thereby expanding the vacuum chamber.
-
Specification