Patent ID: 8920336
Filing Date: 2014-12-30
Classification: A61B,A61M

Abstract:
1. A biopsy device, comprising: a sheath surrounding a bidirectionally axially displaceable guidewire; a terminal region of the guidewire which is axially extendable beyond the sheath in a first state and axially withdrawn into the sheath in a second state, having a plurality of bristles extending from the guidewire, forming a brush having a diameter larger than an inner diameter of the sheath in the first state; a sampling space without bristles proximal to the terminal region of the guidewire with respect to the sheath, configured to contain a sample of fluid and cells; and a tight-fitting ring surrounding the guidewire configured to generate suction to draw the fluid and cells surrounding a distal end of the sheath into the sampling space during retraction of the guidewire into the sheath due to an axial force on the guidewire away from the terminal region.