A system for refilling a multi-chamber implantable infusion device is presented. The infusion device has a refill chamber which is accessible through an external septum of a refill port. The refill chamber is divided by an inner septum into an upper reservoir and a lower reservoir. The lower refill chamber is refilled with lower reservoir needles having a needle opening axially placed to align with the lower reservoir. The upper reservoir is refilled with an upper reservoir needle having an opening aligned with the upper reservoir. Magnetic portions are provided in the needles to localize and identify the needle. A processor within the infusion device is connected to magnetic field sensors which sense magnetic portions of the needle and recognize information encoded magnetically within the needle.

An implantable access port including a port housing that defines a fill port cavity and includes a catheter fitting, a filter positioned within the port housing along a delivery flow pathway configured so that fluid injected into the fill port cavity passes through the filter prior to exiting through the catheter fitting, a one-way valve positioned within the port housing along an aspiration flow pathway configured to permit aspirated fluid to flow unfiltered from the catheter fitting to the fill port cavity and prevent injected fluid from flowing unfiltered from the fill port cavity to the catheter fitting, a port cover coupled to the port housing, and a pierceable septum positioned between the fill port cavity and the port cover configured to allow a needle to pierce through the pierceable septum to access the fill port cavity.

An implantable access port including a port housing that defines a fill port cavity and includes a catheter fitting, a filter positioned within the port housing along a delivery flow pathway configured so that fluid injected into the fill port cavity passes through the filter prior to exiting through the catheter fitting, a one-way valve positioned within the port housing along an aspiration flow pathway configured to permit aspirated fluid to flow unfiltered from the catheter fitting to the fill port cavity and prevent injected fluid from flowing unfiltered from the fill port cavity to the catheter fitting, a port cover coupled to the port housing, and a pierceable septum positioned between the fill port cavity and the port cover configured to allow a needle to pierce through the pierceable septum to access the fill port cavity.

An implantable access port including a port housing that defines a fill port cavity and includes a catheter fitting, a filter positioned within the port housing along a delivery flow pathway configured so that fluid injected into the fill port cavity passes through the filter prior to exiting through the catheter fitting, a one-way valve positioned within the port housing along an aspiration flow pathway configured to permit aspirated fluid to flow unfiltered from the catheter fitting to the fill port cavity and prevent injected fluid from flowing unfiltered from the fill port cavity to the catheter fitting, a port cover coupled to the port housing, and a pierceable septum positioned between the fill port cavity and the port cover configured to allow a needle to pierce through the pierceable septum to access the fill port cavity.

A system for refilling a multi-chamber implantable infusion device is presented. The infusion device has a refill chamber which is accessible through an external septum of a refill port. The refill chamber is divided by an inner septum into an upper reservoir and a lower reservoir. The lower refill chamber is refilled with lower reservoir needles having a needle opening axially placed to align with the lower reservoir. The upper reservoir is refilled with an upper reservoir needle having an opening aligned with the upper reservoir. Magnetic portions are provided in the needles to localize and identify the needle. A processor within the infusion device is connected to magnetic field sensors which sense magnetic portions of the needle and recognize information encoded magnetically within the needle.

Dual-lumen devices for delivery of drugs to a drug reservoir, blood vessel or vascular graft and methods of using the same are provided. In one aspect, devices comprising a dual-lumen needle and dual-lumen catheter are provided for filling and removing drug formulations from a drug reservoir are provided. The drug reservoir can optionally be connected to or associated with a vascular graft or blood vessel for controlled delivery of the drug.

Embodiments of the present invention provide a vent arrangement integrated with a refill port disposed on the outer shell of an implantable drug-delivery device. The vent arrangement may utilize a tiered structure with two septums in a space-efficient configuration that facilitates both venting of pressure and refill of the drug reservoir.

Disclosed is an implantable medical port and methods of using the implantable medical port to deliver and/or to withdraw a desired agent, such as medicines, treatments, or any other fluid into and/or from a body of a subject. The implantable medical port includes two or more needle-penetrable septum portions to provide an increased needle penetration area. Also provided is an implantable medical port having a fluid cavity the contains a substantially needle-impenetrable member that prevents a needle from inadvertently puncturing or otherwise damaging a septum portion other than the septum portion that was initially punctured to gain access to the fluid cavity.

Implantable infusion devices configured to improve fill and evacuation procedures.

A system for refilling a multi-chamber implantable infusion device is presented. The infusion device has a refill chamber which is accessible through an external septum of a refill port. The refill chamber is divided by an inner septum into an upper reservoir and a lower reservoir. The lower refill chamber is refilled with lower reservoir needles having a needle opening axially placed to align with the lower reservoir. The upper reservoir is refilled with an upper reservoir needle having an opening aligned with the upper reservoir. Magnetic portions are provided in the needles to localize and identify the needle. A processor within the infusion device is connected to magnetic field sensors which sense magnetic portions of the needle and recognize information encoded magnetically within the needle.