Reinforced septum for an implantable medical device

• US 10,307,581 B2
• Filed: 10/07/2014
• Issued: 06/04/2019
• Est. Priority Date: 04/27/2005
• Status: Active Grant

• Current Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Original Assignee: C.R. Bard, Inc. (Becton, Dickinson & Co)
• Inventors: Hibdon, Dwight T., Christian, Kelly J., Farnworth, Charles L.
• Primary Examiner(s): Hayman, Imani N
• Application Number:
  US14/508,227
• Publication Number:
  US 20150025478A1
• Time in Patent Office: 1,701 Days
• CPC Class Codes: A61B 6/481 involving the use of contrast agents
• CPC Class Codes: A61M 2005/1581 Right-angle needle-type devices
• CPC Class Codes: A61M 2005/1585 Needle inserters
• CPC Class Codes: A61M 2005/325 Means obstructing the needle passage at distal end of a needle protection sleeve
• CPC Class Codes: A61M 2039/0045 Radiopaque indicia
• CPC Class Codes: A61M 2039/0054 Multiple layers
• CPC Class Codes: A61M 2039/0063 Means for alignment of the septum, e.g. septum rim with alignment holes
• CPC Class Codes: A61M 2039/0072 Means for increasing tightness of the septum, e.g. compression rings, special materials, special constructions
• CPC Class Codes: A61M 2039/0229 having means for facilitating assembling, e.g. snap-fit housing or modular design
• 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 2205/0266 Shape memory materials
• CPC Class Codes: A61M 2205/32 with radio-opaque indicia
• CPC Class Codes: A61M 2207/00 Methods of manufacture, assembly or production
• CPC Class Codes: A61M 2209/04 Tools for specific apparatus
• 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
• CPC Class Codes: A61M 5/158 Needles for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body
• CPC Class Codes: A61M 5/3273 freely sliding on needle shaft without connection to syringe or needle
• CPC Class Codes: Y10T 29/49872 Confining elastic part in socket
• CPC Class Codes: Y10T 428/139 Open-ended, self-supporting conduit, cylinder, or tube-type article

Abstract

A septum for sealably covering a fluid cavity defined in an implantable device, which may be an access port, and methods for assembling the implantable device. The septum may include a resilient septum body, an annular flange extending radially outward from the septum body, and a reinforcement component disposed in the annular flange for reinforcing engagement with a corresponding annular groove defined in a body of the implantable device. The reinforcement component may inhibit unintended detachment of the septum from the implantable device.

Claims

1. A method for assembling an implantable access port, comprising:

providing a housing defining an opening, a fluid cavity under the opening, and a groove between the opening and the fluid cavity; and

inserting a needle-penetrable septum through the opening, the needle-penetrable septum including a flange and a reinforcement structure disposed at least partially within the flange, the inserting comprising;

deforming the needle-penetrable septum from a first shape configuration to a second shape configuration;

inserting at least a portion of the flange into the groove; and

transitioning the needle-penetrable septum from the second shape configuration to the first shape configuration such that a remainder of the flange is seated within the groove and the needle-penetrable septum covers the fluid cavity.

2. The method for assembling according to claim 1, wherein the reinforcement structure includes an annular reinforcement cord disposed within the flange and wherein deforming the needle-penetrable septum to the second shape configuration is accomplished via assistance from an insertion tool.

3. The method for assembling according to claim 2, wherein the annular reinforcement cord includes a shape memory material, and wherein transitioning the needle-penetrable septum to the first shape configuration includes activating the shape memory material.

4. The method for assembling according to claim 1, wherein the reinforcement structure includes a shape memory material, wherein deforming the needle-penetrable septum to the second shape configuration includes folding the needle-penetrable septum, and wherein transitioning the needle-penetrable septum to the first shape configuration includes releasing the needle-penetrable septum.