×

Biopsy device with inner cutting member

  • US 10,231,715 B2
  • Filed: 01/24/2013
  • Issued: 03/19/2019
  • Est. Priority Date: 02/24/2003
  • Status: Expired due to Term
First Claim
Patent Images

1. A biopsy device comprising:

  • a. an outer cannula with a distal end, a tissue receiving aperture proximal to the distal end and an inner lumen extending within the outer cannula to the tissue receiving aperture; and

    b. an elongated tissue cutting member disposed within the inner lumen of the outer cannula, the elongated tissue cutting member comprising,i. a distal tubular portion having a beveled distal tip with opposed outer distal tissue cutting edges comprised of a first distal cutting edge portion and a second distal cutting edge portion, and configured such that the first distal cutting edge portion transitions to the second distal cutting edge portion at a distal extent of the beveled distal tip, the opposed outer distal tissue cutting edges configured to cut a tissue specimen from tissue extending into the tissue receiving aperture in the outer cannula, the distal tubular portion having a longitudinally extending tapered slot configured to form a separation between the first cutting edge portion and the second cutting edge portion at a perimeter of the distal tubular portion, the tapered slot widening in a distal direction toward the beveled distal tip to facilitate an outward flaring of the distal tubular portion, andii. a proximal tubular portion having an inner lumen configured to receive the tissue specimen cut by the opposed outer tissue cutting edges.

View all claims
  • 0 Assignments
Timeline View
Assignment View
    ×
    ×