Sleeve valve catheters

• US 7,235,067 B2
• Filed: 03/06/2003
• Issued: 06/26/2007
• Est. Priority Date: 03/06/2003
• Status: Expired due to Term

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Ujhelyi, Michael R., Laske, Timothy G., Morris, Mary M., Heruth, Kenneth T., Casas-Bejar, Jesus W., Olson, David S.
• Primary Examiner(s): Sirmons; Kevin C.
• Assistant Examiner(s): WITCZAK, CATHERINE
• Application Number:
  US10/382,757
• Publication Number:
  US 20040176742A1
• Time in Patent Office: 1,573 Days
• Field of Search: 604/523, 604/96.01, 604/101.01, 604/97.01, 604/97.02, 604/99.03, 604/101.02, 60410103-10105, 604/103, 604/103.05, 604/41, 604/93.01, 604/537, 604/246, 604/247, 604/48, 604/99.02, 604/99.04, 606/192
• US Class Current: 604/537
• CPC Class Codes: A61M 25/0075 Valve means

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. In another embodiment the sleeve includes a tapered edge.

Claims

1. A medical device comprising:

an implantable catheter having a catheter body having a distal end and a proximal end and including an interior surface defining a lumen with a distal end and a proximal end, the body having an exterior surface of a first outer diameter and a recessed area within the distal end having a second outer diameter an exit port within the recessed area of the catheter body coupled with the lumen of the catheter body; and

a one-way pressure responsive valve to normally seal the exit port and to open the exit port in response to a pressure within the lumen of the catheter body.

2. The medical device of claim 1, further comprising a coating that elutes a therapeutic agent.

3. The medical device of claim 2, wherein the coating is an outer coating of the sleeve.

4. The medical device of claim 2, wherein the coating is an outer coating of the catheter body.

5. The medical device of claim 2, wherein the therapeutic agent is at least one or combination of drugs, proteins, or genes having an anti-inflammation, anti-thrombus, anti-proliferation, and pro-healing effect at the catheter-tissue interface.

6. The medical device of claim 1, wherein the sleeve is formed from an elastic material.

7. The medical device of claim 6, wherein the elastic material comprises silicone.

8. The medical device of claim 6, wherein the elastic material comprises polyurethane.

9. The medical device of claim 6, wherein the elastic material comprises a molded liquid silicone rubber.

10. The medical device of claim 8, wherein the molded liquid silicone rubber has a durometer between approximately 30 and approximately 70 on a shore A scale.

11. The medical device of claim 1, wherein the catheter body is formed from a non-compliant polymer that comprises one of fluoropolymer, polyimide, polyamide, polyurethane, and polypropylene.

12. The medical device of claim 1, wherein the catheter body and the sleeve are formed from a material comprising silicone.

13. The medical device of claim 12, wherein the material to prevent blocking comprises one of graphite and talc.

14. The medical device of claim 12, wherein the material to prevent blocking forms a surface coating on at least an interior surface of the sleeve.

15. The medical device of claim 1, wherein the elastic sleeve includes silicone.

16. The medical device of claim 15, wherein the elastomeric material comprises a molded liquid silicone rubber.

17. The medical device of claim 16, wherein the molded liquid silicone rubber has a durometer between approximately 30 and approximately 70 on a shore A scale.

18. The medical device of claim 1, wherein the catheter body is formed from a non-compliant polymer that comprises one of fluoropolymer, polymide, polyamide, and polyproplylene.

19. The medical device of claim 18, wherein the material to prevent blocking comprises one of graphite and talc.