US 11,666,354 B2
Tissue resection system
Cemal Shener-Irmakoglu, Hot Springs, AR (US)
Assigned to Covidien LP, Mansfield, MA (US)
Filed by Covidien LP, Mansfield, MA (US)
Filed on Aug. 20, 2020, as Appl. No. 16/998,038.
Application 16/998,038 is a continuation of application No. 15/544,985, granted, now 10,772,652, previously published as PCT/US2015/013356, filed on Jan. 28, 2015.
Prior Publication US 2020/0375624 A1, Dec. 3, 2020
This patent is subject to a terminal disclaimer.
Int. Cl. A61B 17/32 (2006.01); A61B 1/00 (2006.01); A61B 1/015 (2006.01); A61M 31/00 (2006.01); A61B 1/018 (2006.01); A61B 1/303 (2006.01); A61M 3/02 (2006.01); A61B 17/00 (2006.01); A61B 17/42 (2006.01); A61M 39/24 (2006.01)
CPC A61B 17/320016 (2013.01) [A61B 1/00068 (2013.01); A61B 1/015 (2013.01); A61B 1/018 (2013.01); A61B 1/303 (2013.01); A61M 3/0229 (2013.01); A61M 31/00 (2013.01); A61B 2017/0034 (2013.01); A61B 2017/4216 (2013.01); A61B 2217/005 (2013.01); A61B 2217/007 (2013.01); A61M 2039/2473 (2013.01); A61M 2205/3334 (2013.01); A61M 2205/70 (2013.01); A61M 2210/1433 (2013.01)] 17 Claims
OG exemplary drawing
 
1. A hysteroscope comprising:
an access port defining a fluid flow channel and configured to receive an instrument through the fluid flow channel;
a valve inlet configured to receive a fluid;
a valve housing operably coupled to the valve inlet;
a valve body defining a body channel, the valve body movable within the valve housing at least between a first open position and a second open position; and
a valve channel in fluid communication with the fluid flow channel of the access port;
wherein when the valve body is:
in the first open position, a first flow path provides a first impedance to fluid flow from the valve inlet through the body channel of the valve body and through a first opening in the valve housing to the fluid flow channel of the access port; and
in the second open position, a second flow path provides a second impedance to fluid flow from the valve inlet through the body channel of the valve body, through a second opening in the valve housing and through a calibration line to the fluid flow channel of the access port,
wherein fluid is prevented from flowing through the calibration line when the valve is in the first open position.