OVERMOLDED ACCESS PORT INCLUDING ANCHORING AND IDENTIFICATION FEATURES

• US 20110118677A1
• Filed: 11/01/2010
• Published: 05/19/2011
• Est. Priority Date: 11/17/2009
• Status: Active Grant

• Current Assignee: Bard Peripheral Vascular Incorporated (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Orome, Amir, Christian, Kelly J., Noyce, Jodie L., Wiley, Martha, Barron, William R., Cise, David M.
• Granted Patent: US 9,079,004 B2
• Time in Patent Office: Days
• US Class Current: 604/288.01
• CPC Class Codes: A61M 2039/0009 Assemblies therefor designed for particular applications, e.g. contrast or saline injection, suction or irrigation
• CPC Class Codes: A61M 2039/0081 Means for facilitating introduction of a needle in the septum, e.g. guides, special construction of septum
• CPC Class Codes: A61M 2039/0205 for injecting media
• CPC Class Codes: A61M 2039/0223 having means for anchoring the subcutaneous access 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 39/0208 Subcutaneous access sites for injecting or removing fluids transcutaneous access sites A61M39/0247; implantable infusion devices A61M5/14276
• CPC Class Codes: Y10T 29/49826 Assembling or joining

Abstract

An access port for providing subcutaneous access to a patient is disclosed. In one embodiment, the port includes an internal body defining a fluid cavity that is accessible via a septum. A compliant outer cover including silicone is disposed about at least a portion of the body. A flange is included with the port body and is covered by the outer cover. The flange radially extends about a perimeter of the port body proximate the septum so as to impede penetration of a needle substantially into the outer cover in instances where the needle misses the septum. The flange can further include both an anchoring feature for securing the outer cover to the port body and an identification feature observable via x-ray imaging technology for conveying information indicative of at least one attribute of the access port. The outer cover provides a suitable surface for application of an antimicrobial/antithrombotic coating.

Claims

1. An access port for providing subcutaneous access to a patient, comprising:

a body defining a fluid cavity accessible via a septum;

a compliant outer cover disposed about at least a portion of the body; and

a flange covered by the outer cover and extending from the body, the flange impeding penetration of a needle past the flange within the outer cover when the needle is intended for penetration into the septum.

2. The access port as defined in claim 1, wherein the flange extends radially about a perimeter of the body, and wherein the flange further includes an anchoring feature for securing the outer cover to the body.

3. The access port as defined in claim 2, wherein the outer cover is overmolded over the body approximately up to a retaining ring that secures the septum to the body, and wherein the anchoring feature includes a plurality of holes defined through the flange.

4. The access port as defined in claim 3, wherein the outer cover includes silicone, wherein the flange includes titanium, and wherein the holes are defined to form alphanumeric characters.

5. The access port as defined in claim 1, wherein the body includes an anchoring feature covered by the outer cover for securing the outer cover to the body, the anchoring feature including one of a plurality of teeth and a plurality of dovetail extensions extending from the body.

6. The access port as defined in claim 1, wherein the outer cover includes at least one of an antimicrobial component and an antithrombotic component.

7. An access port for providing subcutaneous access to a patient, comprising:

a body defining a fluid cavity accessible via a septum;

a compliant outer cover disposed about at least a portion of the body; and

a flange covered by the outer cover and extending from the body proximate the septum, the flange including an identification feature observable via x-ray imaging technology, the identification feature conveying information indicative of at least one attribute of the access port.

8. The access port as defined in claim 7, wherein the flange extends about a perimeter of the body, wherein the identification feature includes a plurality of alphanumeric or symbolic characters, and wherein the identification feature indicates the access port is capable of power injection.

9. The access port as defined in claim 7, wherein the identification feature includes at least one hole defined through the flange so as to serve as an anchoring feature for securing the outer cover to the body.

10. The access port as defined in claim 7, wherein the body includes a metallic material and wherein the flange is formed integrally with the body.

11. The access port as defined in claim 7, wherein the flange is manufactured separately from the body, wherein the flange includes a plurality of keyed notches that each fit over correspondingly keyed tabs on the body of the access port, and wherein the tabs are deformed after the flange notches are placed over the tabs such that the flange is retained by the body.

12. The access port as defined in claim 7, wherein the body of the port includes acetyl resin, wherein the flange includes titanium, and wherein the flange impedes penetration of a needle a substantial distance into the outer cover.

13. An access port for providing subcutaneous access to a patient, comprising:

a body defining a fluid cavity accessible via a septum;

a compliant outer cover substantially covering the body to define an outer surface of the access port; and

a flange covered by the outer cover and extending about a perimeter of the body, the flange including an identification feature observable via x-ray imaging technology, the identification feature conveying information indicative of at least one attribute of the access port.

14. The access port as defined in claim 13, wherein the flange further includes an anchoring feature for securing the outer cover to the body.

15. The access port as defined in claim 14, wherein the anchoring feature and the identification feature are unitary, and wherein the flange is positioned to impede penetration of a needle a substantial distance into the outer cover.

16. The access port as defined in claim 15, wherein the flange generally defines a triangular shape, and wherein the identification feature includes alphanumeric indicia disposed at each vertex of the flange.

17. The access port as defined in claim 16, wherein the alphanumeric indicia are defined as recessed features in the flange, and wherein the flange further comprises a plurality of through holes defined through the flange.

18. The access port as defined in claim 13, wherein the identification feature includes indicia defined through the flange, and wherein a compliant plug is disposed in the indicia so as to prevent visual observation of the indicia from at least one direction.

19. The access port as defined in claim 13, wherein the outer surface defined by the outer cover provides a suitable surface for application of coating thereon to inhibit at least one of microbe adhesion and thrombus formation.

20. An access port for providing subcutaneous access to a patient, comprising:

a body defining a fluid cavity accessible via a septum, the body defined by;

a nose portion including a substantially rigid material; and

a remainder portion including a compliant material.

21. The access port as defined in claim 20, wherein the remainder portion is overmolded on the body of the port and includes silicone, and wherein the nose portion includes a thermoplastic material.

22. An access port for providing subcutaneous access to a patient, comprising:

a body defining a fluid cavity accessible via a septum;

a compliant outer cover disposed about at least a portion of the body; and

a flange covered by the outer cover and extending from the body, the flange including an identification feature observable via x-ray imaging technology, the identification feature conveying information indicative of at least one attribute of the access port,

wherein at least a portion of the outer cover is configured such that visual observation of the identification feature from at least one direction is prevented.

23. The access port as defined in claim 22, wherein the outer cover includes silicone, and wherein at least a portion of a surface of the outer cover is frosted so as to render the portion of the surface substantially opaque.

24. The access port as defined in claim 23, wherein the outer cover includes silicone mixed with a colorant so as to render the silicone opaque.

25. A method for manufacturing an access port for providing subcutaneous access to a patient, the method comprising:

forming a body defining a fluid cavity to be accessible via a septum, the port body including a flange that radially extends from the port body proximate the septum, the flange including an anchoring feature; and

covering at least the flange with a compliant outer cover such that the outer cover envelops the anchoring feature included on the flange to anchor the outer cover to the body.

26. The method for manufacturing an access port as defined in claim 25, further comprising:

applying a coating to the outer cover, the coating including at least one of an antimicrobial and an antithrombotic component.

27. The method for manufacturing an access port as defined in claim 25, wherein covering at least the flange further comprises:

overmolding the outer cover about a majority portion of the body of the port, the outer cover including silicone.

28. The method for manufacturing an access port as defined in claim 27, wherein overmolding the outer cover further comprises:

overmolding the outer cover about a majority portion of the body of the port, at least a portion of a surface of the outer cover including a frosted surface to prevent visual observation therethrough.

29. An access port for providing subcutaneous access to a patient, comprising:

a body including a base and an attachable cap that cooperate to define a fluid cavity accessible via a septum;

a compliant outer cover disposed about at least a portion of the body; and

a flange covered by the outer cover and extending from the body, the flange including a radiopaque material, the flange positioned to impede penetration of a needle a substantial distance into the outer cover.

30. The access port as defined in claim 29, wherein the flange includes titanium and radially extends from the cap of the body.