	US 12,102,345 B2
	Navigable suction instrument with coaxial annular sensor
Ehsan Shameli, Irvine, CA (US); and Itzhak Fang, Irvine, CA (US)
Assigned to Acclarent, Inc., Irvine, CA (US)
Filed by Acclarent, Inc., Irvine, CA (US)
Filed on Jan. 31, 2022, as Appl. No. 17/588,389.
Application 17/588,389 is a continuation of application No. 15/964,886, filed on Apr. 27, 2018, granted, now 11,253,677.
Claims priority of provisional application 62/512,830, filed on May 31, 2017.
Prior Publication US 2022/0211976 A1, Jul. 7, 2022
Int. Cl. A61B 17/24 (2006.01); A61B 17/34 (2006.01); A61B 34/20 (2016.01); A61M 1/00 (2006.01); A61M 25/01 (2006.01); A61B 1/233 (2006.01); A61B 90/00 (2016.01)

CPC A61B 17/24 (2013.01) [A61B 17/34 (2013.01); A61B 17/3417 (2013.01); A61B 34/20 (2016.02); A61M 1/71 (2021.05); A61M 1/74 (2021.05); A61M 1/84 (2021.05); A61M 25/0127 (2013.01); A61M 25/0136 (2013.01); A61B 1/233 (2013.01); A61B 2017/246 (2013.01); A61B 2034/2051 (2016.02); A61B 2090/3958 (2016.02); A61M 1/774 (2021.05); A61M 2025/0166 (2013.01)]

20 Claims

1. An apparatus comprising:

(a) a cannula assembly comprising:

(i) a proximal portion,

(ii) a distal portion,

(iii) a suction tube extending from the proximal portion to the distal portion, the suction tube defining an interior lumen and a maximum outer diameter, and

(iv) an exterior tube, the exterior tube and the suction tube being concentrically positioned with the suction tube inside the exterior tube; and

(b) a sensor assembly comprising:

(i) a sensor configured to couple with the distal portion of the cannula assembly, the sensor including a minimum inner diameter which is larger than that maximum outer diameter of the suction tube such that sensor is configured to slide over suction tube, and

(ii) an electrical communication conduit extending along a length of the cannula assembly exterior to the suction tube, the electrical communication conduit being interposed between the suction tube and the exterior tube and being in electrical communication with the sensor.