Patent ID: 7740598
Filing Date: 2010-06-22
Classification: A61B,G01N

Abstract:
1. A biopsy needle insertion aid for use with a biopsy needle of a predefined diameter, comprising: a cannula that is insertable in a host; the cannula having a lumen configured to receive therewithin the biopsy needle having the predefined outer diameter; the cannula having a proximal end and a distal end; a flexible sealing element with an opening and configured for closing a space between the lumen and the biopsy needle of the predefined diameter inserted in the opening; the flexible sealing element being configured such that, when the biopsy needle of the predefined diameter is inserted in the opening, air is forced in such a manner as to tend to flow between the biopsy needle and the lumen through a gap between the biopsy needle and the flexible sealing element and when an underpressure is present between the biopsy needle and the lumen, the underpressure increases a pressure force so that at least a portion of the flexible sealing element is pressed against the biopsy needle to close the gap.