# US 10,307,581 B2 · Reinforced septum for an implantable medical device

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- Number: US 10,307,581 B2
- Document ID: US10307581B2
- Status: Granted
- Kind: B2
- Application number: 14/508,227
- Filed: 2014-10-07
- Published: 2015-01-22
- Granted: 2019-06-04
- Earliest claimed: 2005-04-27
- Assignees: C. R. Bard, Inc.
- Applicants: C. R. Bard, Inc.
- Inventors: Dwight T. Hibdon; Kelly J. Christian; Charles L. Farnworth
- Web page: https://patentgrep.com/patent/US10307581B2

## CPC

- A61M 39/0208: {Subcutaneous access sites (implantable infusion devices A61M5/14276; transcutaneous access sites A61M39/0247)}
- A61M 39/04: having pierceable self-sealing members
- A61B 6/481: {involving the use of contrast agents}
- A61M 5/158: Needles {for infusions; Accessories therefor, e.g. for inserting infusion needles, or for holding them on the body}
- A61M 5/3273: {freely sliding on needle shaft without connection to syringe or needle}
- A61M 2005/1581: {Right-angle needle-type devices}
- A61M 2005/1585: {Needle inserters}
- A61M 2005/325: {Means obstructing the needle passage at distal end of a needle protection sleeve}
- A61M 2039/0045: {Radiopaque indicia}
- A61M 2039/0054: {Multiple layers}
- A61M 2039/0063: {Means for alignment of the septum, e.g. septum rim with alignment holes}
- A61M 2039/0072: {Means for increasing tightness of the septum, e.g. compression rings, special materials, special constructions}
- A61M 2039/0229: {having means for facilitating assembling, e.g. snap-fit housing or modular design}
- A61M 2039/0238: {having means for locating the implanted device to insure proper injection, e.g. radio-emitter, protuberances, radio-opaque markers}
- A61M 2205/0266: Shape memory materials
- A61M 2205/32: with radio-opaque indicia
- A61M 2207/00: Methods of manufacture, assembly or production
- A61M 2209/04: Tools for specific apparatus
- Y10T 29/49872: Confining elastic part in socket
- Y10T 428/139: Open-ended, self-supporting conduit, cylinder, or tube-type article
- A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)}
- A61B: DIAGNOSIS; SURGERY; IDENTIFICATION (usefulness limited to only animals A61D)
- Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION

## 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

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 2)

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.

### Claim 4 (depends on 1)

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.