Pressure activated valve with high flow slit

Patent metadata

Field	Value
Publication number	US-10874844-B2
Application number	US-201816164229-A
Country	US
Kind code	B2
Filing date	Oct 18, 2018
Priority date	Jan 29, 2004
Publication date	Dec 29, 2020
Grant date	Dec 29, 2020

Abstract

A pressure activated valve for controlling the flow of fluid through a medical device, the pressure activated valve comprises a housing including a lumen extending therethrough and a flow control membrane extending across the lumen of the housing to control the flow of fluid through the lumen by opening when a pressure threshold has been reached.

First claim

What is claimed is:

1. A device comprising:
a valve membrane comprising a first slit, a second slit, a third slit, a short axis, and a long axis;
wherein the valve membrane is elliptical in shape;
wherein the first slit, the second slit, and the third slit extend in a substantially similar direction and are disposed about the long axis;
wherein the first slit, the second slit and the third slit traverse the short axis but do not traverse the long axis; and
wherein the short axis bisects the long axis.

2. The device of claim 1 , further comprising a valve housing.

3. The device of claim 2 , further comprising a catheter.

4. The device of claim 3 , wherein the valve membrane is comprised of a silicone material.

5. The device of claim 4 , wherein the first slit and the second slit are configured to open when acted upon by a pressure of a predetermined threshold.

6. The device of claim 5 , wherein the third slit is configured to open independently from the first slit and the second slit.

7. The device of claim 6 , wherein the first slit and the second slit are non-linear.

8. The device of claim 7 , wherein the first slit and the second slit are curved.

9. The device of claim 8 , wherein the first slit and the second slit are substantially parallel to one another.

10. The device of claim 9 , wherein the first slit and the second slit are normal to the short axis.

11. The device of claim 10 , wherein the valve membrane is configured to prevent unintended fluid flow through the catheter.

12. A device comprising:
an elliptical valve membrane comprising a first slit, a second slit, a third slit, a short axis, and a long axis;
wherein the first slit, the second slit, and the third slit extend in a substantially similar direction, are disposed about the long axis, and traverse the short axis but do not traverse the long axis; and
wherein the short axis bisects the long axis.

13. The device of claim 12 , wherein the first slit and the second slit are normal to the short axis.

14. The device of claim 13 , further comprising a valve housing and a catheter.

15. The device of claim 14 , wherein the elliptical valve membrane is configured to seal the catheter when not in use without damaging the catheter.

16. A device comprising:
a valve membrane comprising a first slit, a second slit, a third slit, a short axis, and a long axis;
wherein the valve membrane is non-circular in shape;
wherein the third slit is disposed between the first slit and the second slit;
wherein the first slit, the second slit, and the third slit extend in a substantially similar direction, are disposed about the long axis, and traverse the short axis but do not traverse the long axis; and
wherein the short axis is configured to bisect the long axis.

17. The device of claim 16 , wherein the first slit and the second slit are non-linear.

18. The device of claim 17 , wherein the first slit and the second slit are normal to the short axis.

19. The device of claim 18 , wherein the valve membrane is comprised of a silicone material.

20. The device of claim 19 , wherein the first slit and the second slit are configured to open when acted upon by a pressure of a predetermined threshold.

Assignees

• Angiodynamics Inc

Inventors

• Weaver Karla
• Dicarlo Paul D

Classifications

• A61M39/24 Primary

  Check- or non-return valves · CPC title

• A61M2039/2426

  Slit valve · CPC title

• A61M25/0075

  Valve means · CPC title

• F16K99/0015

  Diaphragm or membrane valves · CPC title

• A61M2039/242

  designed to open when a predetermined pressure or flow rate has been reached, e.g. check valve actuated by fluid · CPC title