Pressure activated valve with high flow slit

Patent metadata

Field	Value
Publication number	US-10130750-B2
Application number	US-201614994221-A
Country	US
Kind code	B2
Filing date	Jan 13, 2016
Priority date	Jan 29, 2004
Publication date	Nov 20, 2018
Grant date	Nov 20, 2018

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 catheter for providing fluid access to a site within a human body, the catheter comprising:
a proximal end, a distal end, and a first lumen extending therebetween, a housing including a housing lumen in fluid communication with the first lumen, and a valve membrane extending across the housing lumen, the valve member having a short axis and a long axis, the valve membrane comprising:
a first slit and a second slit disposed about a long axis of the valve membrane and a third slit disposed between the first slit and the second slit, wherein the third slit extends in a substantially similar direction as the first slit and the second slit, wherein the first slit and the second slit both traverse the short axis, wherein the first, second, and third slits do not traverse the long axis, and wherein the short axis bisects the long axis.

2. The catheter of claim 1 , wherein the first slit and the second slit both open when acted upon by a pressure of at least a predetermined threshold.

3. The catheter of claim 1 , wherein the third slit opens when acted upon by a pressure of at least a predetermined threshold.

4. The catheter of claim 3 , wherein the first slit and the second slit open independently from the third slit.

5. The catheter of claim 1 , wherein the first slit and the second slit are curved.

6. The catheter of claim 1 , wherein the first slit and the second slit are non-linear.

7. The catheter of claim 1 , wherein the first slit and the second slit are parallel to one another.

8. The catheter of claim 1 , wherein the first slit and the second slit are parallel to the long axis.

9. The catheter of claim 1 , wherein the third slit is curved.

10. The catheter of claim 1 , wherein the first slit and the second slit are normal to the short axis.

11. A catheter for providing fluid access to a site within a human body, the catheter comprising:
a proximal end, a distal end, and a first lumen extending therebetween, a housing including a housing lumen in fluid communication with the first lumen, and a valve membrane extending across the housing lumen, the valve member having a short axis and a long axis, the valve membrane comprising:
a plurality of slits disposed about the long axis of the valve membrane and at least one additional slit disposed between at least two of the plurality of slits, wherein the at least one additional slit extends in a substantially similar direction as the plurality of slits, wherein each of the plurality of slits and the additional slit traverse the short axis, wherein the plurality of slits and the at least one additional slit do not traverse the long axis, and wherein the short axis bisects the long axis.

12. The catheter of claim 11 , wherein the plurality of slits are curved.

13. The catheter of claim 11 , wherein the plurality of slits are non-linear.

14. The catheter of claim 11 , wherein the plurality of slits are parallel to one another.

15. The catheter of claim 11 , wherein the plurality of slits are parallel to the long axis.

16. The catheter of claim 11 , wherein at least one of the plurality of slits is curved.

17. The catheter of claim 11 , wherein the plurality of slits are normal to the short axis.

Assignees

• Angiodynamics Inc

Inventors

• Weaver Karla
• Dicarlo Paul D

Classifications

• A61M2039/2426

  Slit valve · CPC title

• A61M25/0075

  Valve means · 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

• A61M39/24 Primary

  Check- or non-return valves · CPC title

• A61M1/3661 Primary

  for haemodialysis · CPC title