Patent ID: 8532747

Claim:
A biopsy marker delivery device comprising: a cannula having an internal lumen extending from a proximal end of the cannula to the distal end of the cannula, and a marker exit formed in a sidewall of the cannula proximal to the distal end of the cannula, wherein the cannula defines a longitudinal axis extending therethrough, wherein the distal end of the cannula defines an opening; a distal tip member closing the distal end of the cannula, wherein a proximal portion of the distal tip member extends proximally through the opening defined by the distal end of the cannula and along the interior of the sidewall of the cannula such that wherein the cannula extends distally beyond a proximal portion of the distal tip, wherein the proximal portion of the distal tip member is positioned within the cannula, wherein a distal portion of the distal tip member is positioned distal to the distal end of the cannula; a ramp positioned adjacent the marker exit, wherein the ramp defines a first included angle with the longitudinal axis, wherein the ramp forms a first planar surface, wherein the ramp is formed by the proximal portion of the distal tip member; a marker engaging element disposed within the internal lumen of the cannula, wherein at least a portion of the marker engaging element is disposed distally of a proximal end of the marker exit, wherein the marker engaging element comprises a tapered proximal end defining a second included angle with the longitudinal axis, wherein the tapered proximal end forms a second planar surface, wherein the marker engaging element extends proximally from the ramp, wherein the marker engaging element extends proximally along the sidewall of the cannula, wherein the marker engaging element has a thickness of at least twice the thickness of the sidewall of the cannula, wherein the marker engaging element is formed by the proximal portion of the distal tip member; and at least one marker disposed within the internal lumen of the cannula; wherein the cannula is transparent and the distal tip member is radiopaque.