US 12,390,617 B2
Intrabody surgical fluid transfer assemblies with adjustable exposed cannula to needle tip length, related systems and methods
Jesse Flores, Perris, CA (US); and Peter G. Piferi, Orange, CA (US)
Assigned to ClearPoint Neuro, Inc., Solana Beach, CA (US)
Filed by ClearPoint Neuro, Inc., Solana Beach, CA (US)
Filed on Dec. 2, 2022, as Appl. No. 18/061,287.
Application 16/740,586 is a division of application No. 15/420,685, filed on Jan. 31, 2017, granted, now 10,576,247, issued on Mar. 3, 2020.
Application 18/061,287 is a continuation of application No. 16/740,586, filed on Jan. 13, 2020, granted, now 11,541,207.
Claims priority of provisional application 62/382,434, filed on Sep. 1, 2016.
Claims priority of provisional application 62/296,323, filed on Feb. 17, 2016.
Prior Publication US 2023/0285718 A1, Sep. 14, 2023
Int. Cl. A61M 25/00 (2006.01); A61B 90/11 (2016.01); A61M 39/10 (2006.01)
CPC A61M 25/0084 (2013.01) [A61B 90/11 (2016.02); A61M 25/0023 (2013.01); A61M 25/0097 (2013.01); A61M 39/10 (2013.01); A61M 2025/0089 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A surgical assembly for intrabrain therapy, comprising:
a tubular cannula having opposing proximal and distal ends;
a needle that is elongate and has opposing proximal and distal ends, wherein a length of the needle extends through the tubular cannula so that the distal end of the needle extends out of the distal end of the tubular cannula to provide a tip of the needle that is exposed;
a length adjustment mechanism coupled to the needle, the tubular cannula or to both the needle and the tubular cannula, wherein at least one of the needle or the tubular cannula is configured to controllably move longitudinally to adjust a length between the distal end of the tubular cannula and the tip of the needle that is exposed, wherein the length adjustment mechanism comprises a flexible rack gear, and wherein the needle extends through and is attached to the flexible rack gear;
a container comprising a therapeutic agent in fluid communication with the needle; and
a length of tubing coupled to the container at a first end portion thereof and coupled to a connector extending about the proximal end of the needle at an opposing second end portion of the length of tubing.