Catheter with valve

• US 8,864,724 B2
• Filed: 05/08/2009
• Issued: 10/21/2014
• Est. Priority Date: 05/14/2008
• Status: Active Grant

• Current Assignee: Mozarc Medical US LLC
• Original Assignee: Covidien LP (Medtronic Plc)
• Inventors: Onuma, Tadatsugu
• Primary Examiner(s): Schmidt, Emily
• Assistant Examiner(s): Anderson, Michael J
• Application Number:
  US12/463,019
• Publication Number:
  US 20090312718A1
• Time in Patent Office: 1,992 Days
• Field of Search: 604/246, 604/247, 604/96.01, 604/164.01, 604/523
• US Class Current: 604/246
• CPC Class Codes: A61M 2025/0078 for fluid inflow from the body into the catheter lumen
• CPC Class Codes: A61M 2039/027 having a particular valve, seal or septum
• CPC Class Codes: A61M 2039/2433 Valve comprising a resilient or deformable element, e.g. flap valve, deformable disc
• CPC Class Codes: A61M 25/0075 Valve means

Abstract

A catheter including one or more bidirectional valves is provided. The catheter includes a tubular body having proximal and distal ends, and inner and outer surfaces, and at least one valve formed near the distal end of the tubular body. The valve includes a deformation portion that defines a slit that is openable and closable. The openable/closable slit communicates from the inner surface to the outer surface of the tubular body, wherein the distance between the inner surface and the outer surface of the tubular body progressively becomes thinner approaching the openable/closable slit within the deformation portion.

Claims

1. A catheter comprising:

a tubular body having proximal and distal ends, and inner and outer surfaces;

at least one valve formed near the distal end of the tubular body, the valve being formed in the tubular body and including a deformation portion that defines a slit that is openable and closable, the deformation portion including an oblique surface defining the openable/closable slit, the oblique surface being formed at the outer surface of the tubular body, the openable/closable slit communicating from the inner surface to the outer surface of the tubular body, wherein the distance between the inner surface and the outer surface of the tubular body progressively becomes thinner approaching the openable/closable slit within the deformation portion.

2. The catheter of claim 1, wherein the deformation portion permits bidirectional flow through the slit.

3. The catheter of claim 1, wherein a wall of the tubular body is thinnest about the slit.

4. The catheter of claim 1, including two or more valves.

5. The catheter of claim 4, wherein the oblique surface of at least one of the two or more valves is formed on the inner surface of the tubular body.

6. A catheter comprising:

a tubular body having proximal and distal ends, and inner and outer surfaces;

a valve formed in the tubular body near the distal end of the tubular body, the valve including a deformation portion configured to permit bidirectional flow therethrough, the deformation portion including an oblique surface defining an openable/closable slit, the oblique surface being formed at the outer surface of the tubular body.

7. The catheter of claim 6, wherein the oblique surface is formed at the inner surface of the tubular body.

8. The catheter of claim 6, wherein a wall of the tubular body is thinnest about the slit.

9. The catheter of claim 6, including two or more valves.

10. The catheter of claim 9, wherein the oblique surface of at least one of the valves is formed on the inner surface of the tubular body and the oblique surface of at least one of the other valves is formed on the outer surface of the tubular body.

11. A catheter comprising:

a tubular body having proximal and distal ends, and inner and outer surfaces;

at least one valve formed in the tubular body near the distal end of the tubular body, the valve including a deformation portion having an oblique surface defining a slit that is openable and closable, the oblique surface being formed at the outer surface of the tubular body, the openable/closable slit communicating from the inner surface to the outer surface of the tubular body, wherein the distance between the inner surface and the outer surface of the tubular body progressively becomes thinner approaching the openable/closable slit within the deformation portion, the elongated body being thinnest about the elongated slit, wherein the deformation portion permits bidirectional flow though the elongated slit.