US 11,701,509 B2
Compressible cannula valve
Jonathan Yeh, Diamond Bar, CA (US)
Assigned to CareFusion 303, Inc., San Diego, CA (US)
Filed by CAREFUSION 303, INC., San Diego, CA (US)
Filed on May 30, 2019, as Appl. No. 16/427,216.
Application 16/427,216 is a continuation of application No. 14/806,469, filed on Jul. 22, 2015, granted, now 10,350,403.
Application 14/806,469 is a continuation of application No. 13/360,180, filed on Jan. 27, 2012, granted, now 9,114,244, issued on Aug. 25, 2015.
Prior Publication US 2019/0314624 A1, Oct. 17, 2019
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 39/26 (2006.01); A61M 39/24 (2006.01)
CPC A61M 39/24 (2013.01) [A61M 39/26 (2013.01); A61M 2039/2433 (2013.01); A61M 2039/263 (2013.01); A61M 2039/267 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A compressible cannula valve comprising:
a housing comprising an inner cavity and a housing port, a cannula positioned in the inner cavity and comprising a cannula tip, a central channel, and a radially extending opening in fluid communication with the central channel; and
a resiliently compressible valve comprising a valve tip, a shoulder, and a protrusion, wherein each of the cannula tip and the valve tip form a flat surface at the housing port, and wherein the valve is disposed in the inner cavity of the housing and around the cannula, and in a sealed position, the protrusion is received radially within the radially extending opening, and the shoulder is disposed opposite the protrusion to engage an inner wall of the housing and resist a backpressure within the central channel against the protrusion;
wherein when the valve changes from the sealed position to an open position, the valve deforms and withdraws the protrusion of the valve out of the radially extending opening.