Radiopaque and septum-based indicators for a multi-lumen implantable port

• US 10,792,485 B2
• Filed: 09/24/2018
• Issued: 10/06/2020
• Est. Priority Date: 11/07/2007
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Evans, John G., Vader, Mark H., Amin, Murtaza Y., Cise, David M., Christian, Kelly J.
• Primary Examiner(s): Bosworth, Kami A
• Application Number:
  US16/139,852
• Publication Number:
  US 20190060628A1
• Time in Patent Office: 743 Days
• CPC Class Codes: A61B 6/032 Transmission computed tomography [CT]
• 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 2205/0211 Ceramics
• CPC Class Codes: A61M 2205/32 with radio-opaque indicia
• 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 5/007 for contrast media

Abstract

A method for power injection of fluids through an access port includes implanting the access port in a patient, palpating the access port, imaging the access port, and introducing contrast media into the patient through the access port at a rate in a range from about two milliliters per second to about five milliliters per second. The access port may include a housing, a first septum, a second septum, and a radiographic indicator. The first septum and the second septum may respectively cover a first reservoir and a second reservoir of the access port. The first septum may include a first sub-pattern of protrusions and the second septum may include a second sub-pattern of protrusions. The radiographic indicator may include a first portion including information pertaining to the first sub-pattern, and a second portion including information pertaining to the second sub-pattern. The imaging identifies the radiographic indicator.

Claims

1. A method for power injection of fluids through an access port, comprising:

implanting the access port in a patient, the access port comprising;

a housing defining a first reservoir and a second reservoir;

a first septum covering the first reservoir, the first septum including a first sub-pattern of protrusions;

a second septum covering the second reservoir, the second septum including a second sub-pattern of protrusions; and

a radiographic indicator including a first portion and a second portion, the first portion including information pertaining to the first sub-pattern of protrusions, the second portion including information pertaining to the second sub-pattern of protrusions;

palpating the access port to locate the first sub-pattern of protrusions and the second sub-pattern of protrusions;

imaging the access port to identify the radiographic indicator;

inserting a needle connected to a power injection machine through the first septum to establish fluid communication between a lumen of the needle and the first reservoir; and

introducing contrast media into the patient through the access port at a rate in a range from about two milliliters per second to about five milliliters per second.

2. The method according to claim 1, wherein the radiographic indicator indicates an orientation of the access port in the patient, and wherein the imaging step includes identifying the orientation of the access port.

3. The method according to claim 1, wherein the imaging step includes identifying the access port as a dual lumen port connected to a dual lumen catheter.

4. The method according to claim 1, wherein the radiographic indicator includes a recess defined in the housing, the recess being radiographically visible relative to other portions of the housing.

5. The method according to claim 1, wherein the palpating step includes determining an orientation of the access port with respect to locations of the first septum and the second septum.

6. The method according to claim 1, wherein a combination of the first sub-pattern of protrusions and the second sub-pattern of protrusions defines a third sub-pattern of protrusions, and wherein the palpating step includes identifying the access port as suitable for power injection of fluids via the third sub-pattern of protrusions.

7. The method according to claim 1, wherein the first sub-pattern of protrusions identifies a triangular shape, and wherein the inserting step includes identifying a central region of the first septum by locating a center of the triangular shape.

8. The method according to claim 1, wherein the radiographic indicator includes a letter “

C” and

a letter “

T,” and

wherein the imaging step includes identifying the access port as suitable for power injection of fluids via a combination of the letters “

C” and

“

T.”

9. The method according to claim 8, wherein the letters “

C” and

“

T”

are positioned on the access port such that when viewed on a radiographic image, the letters are in a non-reversed configuration, wherein the imaging step further comprises identifying whether the first septum and the second septum are facing outward with respect to the patient by verifying that the letters “

C” and

“

T”

are in the non-reversed configuration.