US 12,133,676 B2
Tissue ablation cannula assembly
Thomas Sprinkle, Kalamazoo, MI (US)
Assigned to Stryker Corporation, Portage, MI (US)
Filed by Stryker Corporation, Kalamazoo, MI (US)
Filed on Sep. 9, 2022, as Appl. No. 17/941,601.
Application 17/941,601 is a continuation of application No. 16/151,989, filed on Oct. 4, 2018, granted, now 11,452,561.
Application 16/151,989 is a continuation of application No. 15/898,820, filed on Feb. 19, 2018, granted, now 10,159,526, issued on Dec. 25, 2018.
Application 15/898,820 is a continuation of application No. 14/824,673, filed on Aug. 12, 2015, abandoned.
Application 14/824,673 is a continuation of application No. PCT/US2013/027038, filed on Feb. 21, 2013.
Prior Publication US 2023/0000544 A1, Jan. 5, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 18/14 (2006.01); A61B 18/00 (2006.01); A61B 18/12 (2006.01); A61B 90/00 (2016.01)
CPC A61B 18/1477 (2013.01) [A61B 18/148 (2013.01); A61B 2018/00791 (2013.01); A61B 2018/00821 (2013.01); A61B 2018/124 (2013.01); A61B 2018/1475 (2013.01); A61B 2090/0807 (2016.02); A61B 2090/0811 (2016.02)] 3 Claims
OG exemplary drawing
 
1. A method of radiofrequency ablation of tissue, the method comprising:
providing an assembly including a cannula and an electrode, wherein the cannula includes a cannula body defining a lumen and including a bend, a tip distal to the bend and flared such that a distalmost point of the tip is disposed on an inner side of the bend, and a single side opening longitudinally located at the bend and radially located on a side of the cannula body opposite the distalmost point, wherein the single side opening opens into the lumen;
inserting the cannula into a patient;
steering the cannula to a vicinity of target tissue, wherein flexibility of the cannula body facilitates positioning of the cannula in the vicinity;
inserting the electrode into the lumen of the cannula;
advancing distally the electrode within the lumen of the cannula such that the electrode extends out of the single side opening, wherein the tip of the cannula body provides a first tip within the tissue and a distal end of the electrode provides a second tip within the tissue; and
operating a control console to apply current using the first and second tips to ablate the tissue.