Pressure Actuated Valve with Improved Biasing Member

Patent metadata

Field	Value
Publication number	US-2016008530-A1
Application number	US-201514857962-A
Country	US
Kind code	A1
Filing date	Sep 18, 2015
Priority date	Jun 27, 2003
Publication date	Jan 14, 2016
Grant date	—

Abstract

A valve for controlling material flow through a catheter, comprises a first flexible member including a first moveable element, wherein, when the first moveable element is in the open position, material may flow past the first flexible member through a first lumen of the catheter and, when the first moveable element is in the closed position, flow through the first lumen is prevented and a first biasing member coupled to the first flexible member for biasing the first moveable member toward the closed position.

First claim

What is claimed:

1 . A valve for controlling fluid flow to and from a vascular system of a patient through a vascular access catheter comprising:
a flexible member including a first slit and a second slit disposed therein, the first slit and the second slit being disposed substantially symmetrically about a long axis of the flexible membrane; and a third slit disposed in between the plurality of the first slit and the second slit, wherein the third slit traverses a long axis of the flexible member.

2 . The valve of claim 1 , wherein each of the first slit and second slit are located near a periphery of the flexible member.

3 . The valve of claim 1 , wherein the flexible member is contained within a peripherally inserted central catheter.

4 . The valve of claim 1 , wherein the third slit further includes at least two moveable elements, each moveable element further comprises a resilient flap.

5 . The valve of claim 4 , wherein the resilient flaps are made of a material with a predetermined amount of resilience to allow the resilient flaps to remain closed when the fluid pressure within the access catheter is within the range of up to 45 mmHg.

6 . The valve of claim 4 , wherein the resilient flaps are made of a material with a predetermined amount of resilience to allow the resilient flaps to open when the fluid pressure within the access catheter is over 45 mmHg.

7 . The valve of claim 1 , wherein the third slit is longer than the first slit and the second slit.

8 . The valve of claim 1 , wherein the third slit as a width of up to 0.002 inches.

9 . The valve of claim 1 , wherein the third slit as a length up to 0.3 inches.

10 . The valve of claim 4 , wherein the resilient flaps are constrained along all sides of the valve except along the third slit.

11 . The valve of claim 1 , wherein the third slit does not touch either the first slit or second slit.

12 . The valve of claim 11 , wherein the first slit does not touch the second slit.

13 . A valve for controlling fluid flow to and from a vascular system of a patient through a vascular access catheter comprising:
a flexible member including a first slit and a second slit disposed therein, the first slit and the second slit being disposed substantially symmetrically about a long axis of the flexible membrane; a third slit disposed in between the plurality of the first slit and the second slit, wherein the third slit traverses a long axis of the flexible member; and wherein the first slit is substantially parallel to the third slit on a first side, and the second slit is substantially parallel to the third slit on a second side.

14 . The valve of claim 13 , wherein the first side and the second side both contain a resilient member.

15 . The valve of claim 14 , wherein the resilient members form the opening of the third slit.

Assignees

• Angiodynamics Inc

Inventors

• Weaver Karla
• Cuthane Jim

Classifications

• A61M2039/2433

  Valve comprising a resilient or deformable element, e.g. flap valve, deformable disc · CPC title

• A61M2025/0031

  characterized by lumina for withdrawing or delivering, i.e. used for extracorporeal circuit treatment · CPC title

• A61M39/24

  Check- or non-return valves · CPC title

• A61M25/0028

  characterized by features relating to at least one lumen located at the proximal part of the catheter, e.g. alterations in lumen shape or valves (catheter hubs A61M25/0097) · CPC title

• A61M1/3653 Primary

  Interfaces between patient blood circulation and extra-corporal blood circuit · CPC title