Catheter infusion port

• US 7,850,666 B2
• Filed: 01/19/2006
• Issued: 12/14/2010
• Est. Priority Date: 01/21/2005
• Status: Active Grant

• Current Assignee: Medical Components, Inc., Twincath LLC
• Original Assignee: Medical Components, Inc.
• Inventors: Schweikert, Timothy M, Schon, Donald A
• Primary Examiner(s): Lucchesi; Nicholas D
• Assistant Examiner(s): Campbell; Victoria P
• Application Number:
  US11/335,369
• Publication Number:
  US 20060184142A1
• Time in Patent Office: 1,790 Days
• Field of Search: 604/175, 604/288.01, 604/288.02, 604/288.03, 604/288.04
• US Class Current: 604/288.02
• CPC Class Codes: A61M 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276
• CPC Class Codes: A61M 39/04 having pierceable self-sealing members

Abstract

A port (100) for a catheter assembly (200), including a body (102) and a cover (150) and having a distal discharge port (116) for connection to an implanted catheter assembly. Within the body is a longitudinal U-shaped channel (120) extending to a proximal body wall (104) from the distal body wall (106) along a longitudinal axis parallel to the axis of the discharge port (116). The channel has a rounded bottom (122) and is also rounded at the channel ends (126,124) at the distal and proximal body walls. The cover (150) provides for penetration by a syringe needle and seals upon needle withdrawal, with the cover having an inside surface (152) concave and rounded between the distal and proximal ends and also longitudinally, being generally smoothed into the channel sides and ends. The port has no inner sharp edges or corners and eliminates blood clotting and unwanted growth sites.

Claims

1. A port for transmitting a fluid to a conduit, comprising:

a narrow elongated body having;

a proximal end;

a distal end having a discharge port extending exterior from the body for connection to a conduit; and

a first and second pair of substantially parallel planar side walls defining a single elongated channel extending between the proximal and distal ends, wherein the channel is in fluid communication with the exterior of the body through the discharge port; and

a cover fixedly connected to the body and extending over the channel such that the channel is wholly contained within the body and the cover, and the cover is constructed from a polymer and is self-sealing to permit needle insertion and to seal upon needle withdrawal,

wherein the body and the cover have inside surfaces defining the channel, wherein all surfaces bounding the channel are generally rounded and smooth and are free of sharp edges and corners.

2. The port according to claim 1, wherein the body is constructed from a metal.

3. The port according to claim 1, wherein the cover further comprises at least one support strut extending therethrough intermediate the proximal and distal ends.

4. The port according to claim 3, wherein the at least one support strut extends across the channel.

5. The port according to claim 3, wherein the at least one support strut is interconnected by a framework.

6. The port according to claim 3, wherein the at least one support strut is embedded within the cover.

7. The port according to claim 1, wherein the channel comprises a generally concave shape.

8. The port according to claim 1, wherein the cover comprises a generally convex shape with a concave bottom surface.

9. The port according to claim 1, wherein the body is adapted to be secured to a patient.

10. The port according to claim 1, wherein the elongated body has a constant width.

11. The port according to claim 1, wherein the elongated body has exterior surfaces that are continuous with an exterior surface of the cover.

12. An implantable port, consisting essentially of:

an elongated body, comprising;

a proximal end,

a distal end; and

a first and second pair of substantially parallel planar vertical side walls defining a single elongated channel extending between the proximal end and the distal end;

a needle penetrable cover affixed to the elongated body having a generally convex exterior surface and a generally concave interior surface; and

a discharge port deposited at the distal end of the elongated body, wherein the discharge port is in fluid communication with the channel,

wherein the elongated body and the cover have interior surfaces defining the channel, wherein all surfaces bounding the channel are generally rounded and smooth and are free of sharp edges and corners.

13. The implantable port of claim 12, wherein the cover is supported by a at least one support strut extending across the channel.