Systems and methods for radiographically identifying an access port

• US 8,939,947 B2
• Filed: 02/25/2013
• Issued: 01/27/2015
• Est. Priority Date: 03/04/2005
• Status: Active Grant

• Current Assignee: Bard Peripheral Vascular Incorporated (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Maniar, Ketan K., Worthen, Sean M., Powers, Kelly B.
• Primary Examiner(s): BERDICHEVSKY, AARTI
• Application Number:
  US13/776,517
• Publication Number:
  US 20130172733A1
• Time in Patent Office: 701 Days
• Field of Search: 604/175, 604/200.01, 604/288.01, 604/288.02
• US Class Current: 604/288.02
• CPC Class Codes: A61B 6/12 Arrangements for detecting or locating foreign bodies
• CPC Class Codes: A61M 2039/0205 for injecting media
• CPC Class Codes: A61M 2039/0211 with multiple chambers in a single site
• CPC Class Codes: A61M 2039/0238 having means for locating the implanted device to insure proper injection, e.g. radio-emitter, protuberances, radio-opaque markers
• CPC Class Codes: A61M 2205/32 with radio-opaque indicia
• CPC Class Codes: A61M 2205/582 by tactile feedback
• CPC Class Codes: A61M 2205/6054 Magnetic identification systems
• CPC Class Codes: A61M 2207/00 Methods of manufacture, assembly or production
• 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 39/0247 Semi-permanent or permanent transcutaneous or percutaneous access sites to the inside of the body peritoneal dialysis catheters A61M1/285; tracheostomy devices A61M16/0465; measuring pressure within the body A61B5/03; colostomy devices A61F5/445; gastrotomy feeding tubes A61J15/0015; means for fixing a feeding tube outside of the body A61J15/0053
• CPC Class Codes: Y10T 156/10 Methods of surface bonding and/or assembly therefor

Abstract

An access port for subcutaneous implantation is disclosed. Such an access port may comprise a body for capturing a septum for repeatedly inserting a needle therethrough into a cavity defined within the body. Further, the access port may include at least one feature structured and configured for identification of the access port subsequent to subcutaneous implantation. Methods of identifying a subcutaneously implanted access port are also disclosed. For example, a subcutaneously implanted access port may be provided and at least one feature of the subcutaneously implanted access port may be perceived. Further, the subcutaneously implanted access port may be identified in response to perceiving the at least one feature. In one embodiment, an identification feature is included on an insert that is incorporated into the access port so as to be visible after implantation via x-ray imaging technology.

Claims

1. A power-injectable access port for providing subcutaneous access to a patient, comprising:

a port body defining a fluid cavity, the port body formed from a base material; and

a radiopaque insert separate from the port body, the radiopaque insert formed from a material comprising a mixture of the base material and a radiopaque material, the radiopaque insert including an identification feature that is observable via x-ray imaging technology subsequent to subcutaneous implantation of the access port, the identification feature identifying the access port as a power-injectable port.

2. The power-injectable access port according to claim 1, wherein the radiopaque insert is visible from a surface of the port prior to subcutaneous implantation.

3. The power-injectable access port according to claim 1, wherein the radiopaque insert is positioned substantially flush with a bottom surface of the access port.

4. The power-injectable access port according to claim 1, wherein the base material is a polycarbonate and the radiopaque material includes tungsten.

5. The power-injectable access port according to claim 1, wherein the base material is a polysulfone and the radiopaque material includes bismuth trioxide.

6. The power-injectable access port according to claim 1, wherein the base material includes acetyl resin and the radiopaque material includes a metal oxide.

7. The power-injectable access port according to claim 6, wherein the metal oxide includes bismuth trioxide.

8. The power-injectable access port according to claim 1, wherein the port body includes a base portion and a cap portion joined to the base portion over a septum that is captured therebetween.

9. The power-injectable access port according to claim 8, wherein the radiopaque insert is encapsulated in the base portion.

10. The power-injectable access port according to claim 1, wherein the radiopaque insert has an annular shape with three vertices configured to surround an outer perimeter of the access port.

11. The power-injectable access port according to claim 10, wherein the identification feature includes a “

C”

letter-shaped hole and a “

T”

letter-shaped hole at each of the three vertices.

12. The power-injectable access port according to claim 1, wherein the identification feature includes alphanumeric indicia.

13. The power-injectable access port according to claim 12, wherein the alphanumeric indicia includes the letters “

C” and

“

T”

.

14. The power-injectable access port according to claim 1, wherein the port body defines a first fluid cavity and a second fluid cavity, and wherein a radiopaque insert outer perimeter is defined by a first triangle connected to a second triangle.

15. The power-injectable access port according to claim 14, wherein the first triangle is positioned coincident with an axis passing through the first fluid cavity and the second triangle is positioned coincident with an axis passing through the second fluid cavity.

16. The power-injectable access port according to claim 15, wherein the radiopaque insert includes the letters “

C” and

“

T”

.

17. The power-injectable access port according to claim 16, wherein the “

C”

is defined by a cutout in the first triangle, and the “

T”

is defined by a cutout in the second triangle.