Injector apparatus and method for drug delivery
First Claim
1. A system for injecting a therapeutic agent into an ocular implant, the system comprising:
- an injection lumen configured to provide a pathway for injecting a therapeutic agent into the ocular implant using positive pressure applied through the injection lumen;
an outlet lumen configured to provide a pathway through which a first amount of pre-existing fluid in the ocular implant exits the ocular implant as therapeutic agent is injected into the ocular implant through the injection lumen;
a receiver chamber fluidly coupled to the outlet lumen, the receiver chamber configured to receive fluid that exits the ocular implant via the outlet lumen;
wherein injection of the therapeutic agent into the ocular implant via the injection lumen upon application of the positive pressure displaces the first amount of pre-existing fluid in the ocular implant into the receiver chamber via the outlet lumen.
1 Assignment
0 Petitions
Accused Products
Abstract
Methods and apparatus provide a therapeutic fluid to devices implanted in the body, for example to containers of devices implanted in the eye of a patient. The methods and apparatus may comprise an injector to increase an amount of therapeutic agent injected into the device implanted in the eye, or a structure to receive the therapeutic fluid within the device implanted in the eye, or combinations thereof. The device implanted in the eye may comprise a reservoir chamber having a fluid with a density different than the therapeutic fluid, and the apparatus can be adapted to at least partially separate the implanted device fluid from therapeutic fluid within the reservoir chamber to increase and amount of therapeutic fluid placed in the reservoir chamber.
458 Citations
20 Claims
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1. A system for injecting a therapeutic agent into an ocular implant, the system comprising:
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an injection lumen configured to provide a pathway for injecting a therapeutic agent into the ocular implant using positive pressure applied through the injection lumen; an outlet lumen configured to provide a pathway through which a first amount of pre-existing fluid in the ocular implant exits the ocular implant as therapeutic agent is injected into the ocular implant through the injection lumen; a receiver chamber fluidly coupled to the outlet lumen, the receiver chamber configured to receive fluid that exits the ocular implant via the outlet lumen; wherein injection of the therapeutic agent into the ocular implant via the injection lumen upon application of the positive pressure displaces the first amount of pre-existing fluid in the ocular implant into the receiver chamber via the outlet lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification