US 11,751,846 B2
Stiff sheath for imaging probe
Surag Mantri, East Palo Alto, CA (US); and Kevin Patrick Staid, Lowell, MA (US)
Assigned to PROCEPT BioRobotics Corporation, Redwood City, CA (US)
Filed by PROCEPT BioRobotics Corporation, Redwood City, CA (US)
Filed on Dec. 30, 2020, as Appl. No. 17/247,922.
Application 17/247,922 is a continuation of application No. PCT/US2020/021708, filed on Mar. 9, 2020.
Claims priority of provisional application 62/815,331, filed on Mar. 7, 2019.
Prior Publication US 2021/0113184 A1, Apr. 22, 2021
Int. Cl. A61B 8/00 (2006.01)
CPC A61B 8/445 (2013.01) [A61B 8/4455 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An imaging system to image tissue of a patient, comprising:
an imaging probe to be inserted into the patient;
a stiff sheath, the stiff sheath comprising an internal channel sized to receive the imaging probe and a closed distal end, wherein the closed distal end is rounded for advancement into the patient;
a proximal seal to decrease leakage of fluid from an interior of the stiff sheath;
a fluid source coupled to the interior of the stiff sheath;
a one-way valve between the fluid source and the interior of the stiff sheath configured to allow fluid from the fluid source to flow into the interior of the stiff sheath;
an evacuation channel in fluid communication with an interior chamber of the stiff sheath; and
a check valve coupled to the evacuation channel to provide one-way fluid flow through the evacuation channel;
wherein the stiff sheath and the imaging probe are sized and arranged to pump fluid with a reciprocating motion of the imaging probe in the stiff sheath.