Reservoir device for intraocular drug delivery
First Claim
Patent Images
1. A sustained release delivery device, the delivery device comprising:
- a refillable reservoir configured to be implanted into a vitreous chamber of an eye through a sutureless sclerotomy and formed a pliable wall configured to contain a therapeutic agent,wherein one or more apertures formed in the pliable wall allow for sustained flow of the therapeutic agent contained in the refillable reservoir through the one or more apertures into the vitreous chamber at a rate of delivery, andwherein the pliable wall has a first configuration having a first cross-sectional dimension suitable for insertion of the refillable reservoir through the sclerotomy into the vitreous chamber and a second configuration having a second, larger cross-sectional dimension, wherein therapeutic agent flows from the reservoir through the one or more apertures in the pliable wall when in the second configuration so as to deliver the therapeutic agent to the vitreous chamber over an extended period of time at the rate of delivery;
an inlet port positioned near a proximal end of the refillable reservoir having an injectable, self-sealing surface; and
an elongated, inner support around which at least a portion of the pliable wall is configured to adopt the first configuration, the inner support comprising a proximal end extending towards the inlet port and a distal end that is external to the pliable wall.
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Abstract
A delivery device that allows for the sustained release of an agent, particularly useful for the sustained release of a therapeutic agent to limited access regions, such as the posterior chamber of the eye and inner ear. The delivery device is minimally invasive, refillable and may be easily fixed to the treatment area. The delivery device includes a hollow body with an inlet port at its proximal end for insertion of the agent, a reservoir for holding the agent and a delivery mechanism for the sustained delivery of the agent from the reservoir to the patient.
186 Citations
21 Claims
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1. A sustained release delivery device, the delivery device comprising:
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a refillable reservoir configured to be implanted into a vitreous chamber of an eye through a sutureless sclerotomy and formed a pliable wall configured to contain a therapeutic agent, wherein one or more apertures formed in the pliable wall allow for sustained flow of the therapeutic agent contained in the refillable reservoir through the one or more apertures into the vitreous chamber at a rate of delivery, and wherein the pliable wall has a first configuration having a first cross-sectional dimension suitable for insertion of the refillable reservoir through the sclerotomy into the vitreous chamber and a second configuration having a second, larger cross-sectional dimension, wherein therapeutic agent flows from the reservoir through the one or more apertures in the pliable wall when in the second configuration so as to deliver the therapeutic agent to the vitreous chamber over an extended period of time at the rate of delivery; an inlet port positioned near a proximal end of the refillable reservoir having an injectable, self-sealing surface; and an elongated, inner support around which at least a portion of the pliable wall is configured to adopt the first configuration, the inner support comprising a proximal end extending towards the inlet port and a distal end that is external to the pliable wall. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method for sustained delivery of a therapeutic agent, the method comprising:
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(1) forming a sclerotomy through to a vitreous chamber of an eye, the sclerotomy having a size that requires no sutures for scleral closure; (2) preparing an empty sustained release delivery device for implantation in the eye, the sustained release delivery device comprising; (i) a refillable reservoir formed of a pliable wall configured to contain the therapeutic agent, wherein one or more apertures are formed in the pliable wall, wherein the pliable wall has a first configuration having a first cross-sectional dimension suitable for insertion of the refillable reservoir through the sclerotomy into the vitreous chamber and a second configuration having a second, larger cross-sectional dimension, wherein therapeutic agent flows from the reservoir through the one or more apertures in the pliable wall when in the second configuration so as to deliver the therapeutic agent to the vitreous chamber over an extended period of time at the rate of delivery; (ii) an inlet port positioned near a proximal end of the refillable reservoir having an injectable, self-sealing surface; and (iii) an elongated, inner support around which at least a portion of the pliable wall is configured to adopt the first configuration, the inner support comprising a proximal end extending towards the inlet port and a distal end that is external to the pliable wall, wherein preparing comprises compressing the pliable wall of the empty sustained release delivery device into the first configuration; (3) inserting the compressed, empty reservoir through the sclerotomy into the vitreous chamber until the inlet port remains external to the vitreous chamber; (4) injecting the therapeutic agent into the reservoir through the inlet port using an injection mechanism; (5) expanding the compressed reservoir into the second configuration upon injecting the therapeutic agent; and (6) flowing the therapeutic agent from the reservoir through the one or more apertures formed in the pliable wall into the vitreous chamber so as to deliver the therapeutic agent at a desired rate of delivery. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21)
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Specification