Back to results
US 11,305,102 B2Granted
Pressure activated proximal valves
AssigneeC. R. Bard, Inc.
InventorsDaniel B. Blanchard, Kelly B. Powers, William R. Barron
Life of this patent
Estimating the term…
Abstract
A catheter assembly for regulation or transfer of fluids to and from a patient. The catheter assembly may include a catheter and a valve assembly. The valve assembly may include a diaphragm having two unidirectional slit valves that open in different directions, a first unidirectional slit valve opening distally in response to an infusion-induced pressure and a second unidirectional slit valve opening proximally in response to an aspiration-induced pressure.
Claims13
A catheter assembly, comprising:
- a catheter including a lumen;
- and
- a valve assembly coupled to a proximal end of the catheter, the valve assembly including a diaphragm, the diaphragm comprising:
- a first unidirectional slit valve located in a central portion of the diaphragm, wherein the first unidirectional slit valve is structurally designed to:
- open distally in response to an infusion-induced pressure;
- and
- remain closed when subjected to an aspiration-induced pressure;
- a second unidirectional slit valve located in a lateral portion of the diaphragm, the lateral portion connecting the central portion to a peripheral portion of the diaphragm, wherein the lateral portion of the diaphragm is thinner than the peripheral portion of the diaphragm, wherein the second unidirectional slit valve is structurally designed to:
- open proximally in response to the aspiration-induced pressure;
- and
- remain closed when subjected to the infusion-induced pressure and
- a reinforcing member coupled to the lateral portion.
9 more elements
Dependencies are inferred from the claim text.