US 11,717,278 B2
Apparatus and methods for delivering hemostatic materials for blood vessel closure
Zia Yassinzadeh, San Jose, CA (US); and Delfin Pelayo, San Jose, CA (US)
Assigned to Cardiva Medical, Inc., Santa Clara, CA (US)
Filed by Cardiva Medical, Inc., Santa Clara, CA (US)
Filed on Aug. 14, 2020, as Appl. No. 16/993,883.
Application 16/993,883 is a continuation of application No. 16/722,567, filed on Dec. 20, 2019, abandoned.
Application 16/722,567 is a continuation of application No. 16/409,691, filed on May 10, 2019, abandoned.
Application 16/409,691 is a continuation of application No. 15/237,493, filed on Aug. 15, 2016, granted, now 10,327,747, issued on Jun. 25, 2019.
Application 15/237,493 is a continuation of application No. 14/542,066, filed on Nov. 14, 2014, granted, now 9,439,637, issued on Sep. 13, 2016.
Application 14/542,066 is a continuation of application No. 13/452,656, filed on Apr. 20, 2012, granted, now 8,911,472, issued on Dec. 16, 2014.
Application 13/452,656 is a continuation in part of application No. 12/492,779, filed on Jun. 26, 2009, abandoned.
Claims priority of provisional application 61/077,104, filed on Jun. 30, 2008.
Prior Publication US 2021/0196253 A1, Jul. 1, 2021
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/00 (2006.01); A61B 90/00 (2016.01); A61B 17/22 (2006.01)
CPC A61B 17/0057 (2013.01) [A61B 90/39 (2016.02); A61B 2017/00004 (2013.01); A61B 2017/00623 (2013.01); A61B 2017/00654 (2013.01); A61B 2017/00893 (2013.01); A61B 2017/00898 (2013.01); A61B 2017/22067 (2013.01); A61B 2090/3966 (2016.02)] 12 Claims
OG exemplary drawing
 
12. An apparatus for sealing a blood vessel penetration disposed at the end of a tissue tract, the apparatus comprising:
a shaft having a proximal end and a distal end;
a radially expandable occlusion element at a distal end of the shaft;
a hemostatic implant disposed over and in contact with an exterior surface at the distal end of the shaft; and
a retractable sleeve constraining the hemostatic implant on the shaft to maintain the hemostatic implant in a position between the retractable sleeve and the exterior surface at the distal end of the shaft, wherein the hemostatic implant is configured to remain stationary on the shaft while the retractable sleeve is being retracted;
a latch disposed on the shaft and configured to hold the retractable sleeve in place while the apparatus is advanced through the tissue tract; and
a key slidably disposed over the shaft and configured to shift the latch between a locking configuration where the retractable sleeve is immobilized and an open configuration allowing the retractable sleeve to be proximally retracted.