Sleeve valve catheters

Patent metadata

Field	Value
Publication number	US-9610423-B2
Application number	US-201213486523-A
Country	US
Kind code	B2
Filing date	Jun 1, 2012
Priority date	Mar 6, 2003
Publication date	Apr 4, 2017
Grant date	Apr 4, 2017

Abstract

A catheter body includes an exit port over which a pressure responsive sleeve is formed that allows material to exit a lumen of the catheter body at a given pressure. In one embodiment, a surface of the sleeve is approximately flush with a surface of the catheter body.

First claim

The invention claimed is:

1. A medical device comprising:
a catheter body including an interior surface defining a lumen and an exterior surface of silicone rubber;
an exit port formed within the catheter body to allow material to exit the lumen of the catheter body;
a pressure responsive sleeve of silicone rubber fitting located in an interference fit around the exterior surface having and covering the exit port, expandable from a closed position to an open position; and
an anti-blocking agent between the sleeve and the catheter body, proximate the exit port.

2. The medical device of claim 1 , wherein the anti-blocking agent comprises graphite.

3. The medical device of claim 1 , wherein the anti-blocking agent comprises talc.

4. The medical device of claim 1 , wherein the anti-blocking agent extends from about an entire length of the sleeve to about half the sleeve length.

5. A medical device comprising:
a catheter body including an interior surface defining a lumen and an exterior surface of silicone rubber;
an exit port formed in the catheter body to allow material to exit the lumen of the catheter body;
a pressure responsive sleeve formed from molded liquid silicone rubber having a wall thickness between approximately 0.002 inch and approximately 0.010 inch wherein the sleeve surrounds a portion of the exterior surface of the catheter body and covers the exit port; and
an anti-blocking agent between the sleeve and the catheter body.

6. The medical device of claim 5 , wherein the molded liquid silicone rubber has a durometer between approximately 30 and approximately 70 on a shore A scale.

7. The medical device of claim 5 , wherein the anti-blocking agent comprises graphite.

8. The medical device of claim 5 , wherein the anti-blocking agent comprises talc.

9. The medical device of claim 5 , wherein the anti-blocking agent extends from about an entire length of the sleeve to about half the sleeve length.

Assignees

• Morris Mary M
• Laske Timothy G
• Heruth Kenneth T
• Ujhelyi Michael R
• Casas Jesus W
• Olson David S
• Medtronic Inc

Inventors

• Morris Mary M
• Laske Timothy G
• Heruth Kenneth T
• Ujhelyi Michael R
• Casas Jesus W
• Olson David S

Classifications

• A61M25/0075 Primary

  Valve means · CPC title