US 10,376,248 B2
Mammal and fish biopsy dart
Michael K. Musyl, Honolulu, HI (US); and Lianne McNaughton, Saskatoon (CA)
Assigned to TISSUEGRAB BIOPSY SYSTEMS LLC, Honolulu, HI (US)
Filed by TISSUEGRAB BIOPSY SYSTEMS LLC, Honolulu, HI (US)
Filed on Jul. 15, 2016, as Appl. No. 15/211,526.
Prior Publication US 2018/0014818 A1, Jan. 18, 2018
Int. Cl. A61B 5/00 (2006.01); A61B 10/02 (2006.01); F42B 6/00 (2006.01)
CPC A61B 10/0266 (2013.01) [F42B 6/003 (2013.01); A61B 2503/40 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A dart for use in gathering a biological tissue sample from a marine animal, the dart comprising:
an adapter base for fastening to an elongated dart delivery shaft or striking device;
a dart tip having a sharpened tubular end portion for entering through skin of a marine animal, when the dart tip is driven into the marine animal from a distance via the delivery shaft or striking device, and a chamber portion having an internal transverse cross-sectional diameter larger than an internal transverse cross-sectional diameter of the tubular end portion for collecting and holding a tissue sample, wherein the chamber portion has a proximal portion adapted to be fastened to the adapter base and a distal portion merging with the tubular end portion via a tapered collar portion and one or more openings through a side wall of the chamber portion; and
one or more barbs formed in the chamber portion for preventing withdrawal of the tissue sample through the sharpened tubular end portion while the dart tip is withdrawn from the live marine animal.