Biopsy devices and methods
AssigneeCook Medical Technologies LLC
InventorsJeffrey L. Scifert, Juan Sebastián Sánchez López, Dan Velasco, Christian Tostado, Jeff Alan Burke
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Abstract
The present disclosure provides medical devices and methods for using said medical devices. In particular, the present disclosure provides biopsy devices wherein the protrusion distance of the inner stylet can be selected and an integrated depth stop member is configured to allow the device to align with a single length guide cannula in accordance with the selected protrusion distance.
Claims23
A biopsy device comprising:
- a biopsy needle having a cannula and a stylet slidably received within the cannula;
- a housing having a distal end, wherein the biopsy needle extends from the distal end of the housing, the housing having a firing mechanism configured to extend the stylet relative to the cannula such that a distal end of the stylet protrudes from a distal end of the biopsy needle cannula by a selectable protrusion distance, wherein the selectable protrusion distance is adjustable between at least a first shorter distance and a second longer distance;
- and
- a depth stop member coaxially aligned around a portion of the biopsy needle, and wherein the depth stop member is configured to automatically adopt an extended configuration when the first protrusion distance is selected, and a retracted configuration when the second protrusion distance is selected.
The biopsy device of claim, wherein the firing mechanism comprises a puller defining a slider cavity, and a slider positioned within the slider cavity.
Dependencies are inferred from the claim text.