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System for Radiopaque Marking of Catheters and Ports

IP.com Disclosure Number: IPCOM000198587D
Publication Date: 2010-Aug-10
Document File: 2 page(s) / 409K

Publishing Venue

The IP.com Prior Art Database

Abstract

The invention comprises a catheter with radiopaque writing or symbols printed circumferentially around the catheter and sandwiched between two layers of plastic such as polyurethane.

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System for Radiopaque Marking of Catheters for Specific Indications

            Indwelling vascular access ports suitable for high-pressure infusion are marked with radiopaque ink printed on the flat, back surface of the port so that the characters “CT” or a symbol will be visible under fluoroscopy and physicians can verify the suitability of a patient’s port and catheter for that purpose.  However, the marking on a port may not be readable if the plane of the printed image is not parallel to the imaging plane, and because the ink is printed on an external surface, it can wear off over time.  An alternative which avoids the problem of wearing is covering the printed CT indication with a silicone skirt attached to the port; however, this does not address the obscuring of the image if not parallel to the imaging plane.  The invention described herein avoids wearing of the radiopaque marking and is readable in multiple orientations.

The invention comprises a catheter with radiopaque writing or symbols printed circumferentially around the catheter and sandwiched between two layers of plastic such as polyurethane.  Figure 1 depicts the area of the catheter incorporating the radiopaque markings. 

Figure 2 shows a cross-section of the catheter indicating that the radiopaque markings are sandwiched between two plastic layers.

The sandwiching of the radiopaque marking between plastic layers can be achieved by applying radiopaque ink directly to the outer surface...