US 11,937,910 B2
Biologic delivery system with positional sensing and force sensing
Richard J. Olson, Blaine, MN (US)
Assigned to ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC., St. Paul, MN (US)
Appl. No. 16/087,804
Filed by ST. JUDE MEDICAL, CARDIOLOGY DIVISION, INC., St. Paul, MN (US)
PCT Filed Apr. 5, 2017, PCT No. PCT/US2017/026155
§ 371(c)(1), (2) Date Sep. 24, 2018,
PCT Pub. No. WO2017/184342, PCT Pub. Date Oct. 26, 2017.
Claims priority of provisional application 62/325,026, filed on Apr. 20, 2016.
Prior Publication US 2020/0297239 A1, Sep. 24, 2020
Int. Cl. A61B 5/06 (2006.01); A61B 5/00 (2006.01); A61B 34/20 (2016.01); A61B 90/00 (2016.01); A61M 25/00 (2006.01); A61M 25/01 (2006.01)
CPC A61B 5/063 (2013.01) [A61B 5/4839 (2013.01); A61B 5/6852 (2013.01); A61B 5/6885 (2013.01); A61B 5/74 (2013.01); A61B 90/06 (2016.02); A61B 2090/065 (2016.02)] 11 Claims
OG exemplary drawing
 
1. A system for internal delivery and injection of therapeutic substances into tissue within a body, comprising:
a catheter comprising:
a flexible elongate shaft with proximal and distal ends;
a lumen extending through at least a portion of said shaft and having an opening exiting proximate to said distal end of said shaft;
a first contact sensor attached to said catheter proximate to said distal end, said first contact sensor configured to generate a contact output indicative of contact between the catheter and the tissue;
a therapy delivery needle disposed within said lumen, said therapy delivery needle fluidly connected to a supply of therapeutic solution and being selectively moveable between a retracted position disposed within said catheter and an extended position where a tip of said needle is disposed a predetermined distance beyond said opening; and
a control unit configured to compare a first contact output
generated when the therapy delivery needle is positioned in the retracted position with a second contact output generated when the therapy delivery needle is positioned in the extended position, to generate an output indicative of needle insertion into the tissue based on said comparison.