Systems, kits and methods for loading and delivering a small volume dose from a syringe
Inventors
Assignees
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Publication Number
US-11931554-B2
Publication Date
2024-03-19
Expiration Date
Abstract
A kit is disclosed for accurately loading a small volume dose of a medication within a syringe and for delivering the small volume dose of the medication at a treatment site. The kit generally includes a loading and delivery system in accordance herewith, a syringe, and a medication. The loading and delivery system includes a syringe delivery ring and a syringe loading guide, which may be used for example, to administer a small volume dose of a medication at the end of an ocular surgery.
Core Innovation
The invention relates to a kit for accurately loading a small volume dose of medication within a syringe and delivering the small volume dose at a treatment site. Accuracy is achieved by incorporating a syringe delivery ring and a syringe loading guide that cooperate to set a plunger seal travel distance within the syringe barrel.
The kit includes a syringe with a plunger, including a plunger rod, a plunger flange at a proximal end of the plunger rod, and a plunger seal at a distal end of the plunger rod. The syringe delivery ring includes a lumen and a sidewall opening extending from a proximal end to a distal end, and further includes a proximal segment and a distal segment, where the proximal segment has a smaller outer diameter than the distal segment.
A syringe loading guide includes a proximal-facing surface, a distal-facing surface, and a coupling archway configured to attach to the proximal segment of the syringe delivery ring during loading. In the coupled configuration, a distance between the proximal-facing surface of the syringe loading guide and the proximal end of the syringe delivery ring corresponds to the small volume dose of medication to be delivered.
The disclosed geometry-based dose mapping uses the difference between a first height of the syringe loading guide and a second height of the proximal segment of the syringe delivery ring to correspond to the distance the plunger seal travels within the barrel, thereby delivering a small volume dose of medication.
Claims Coverage
The partial content identifies two independent claims, each centered on using a syringe delivery ring and a syringe loading guide to geometrically set a dose-related distance associated with plunger seal travel or a corresponding distance in a coupled configuration. Across the independent claims, the key inventive features are the cooperative geometric height/distance relationships together with the specific syringe and delivery-ring structural elements and their coupling arrangement.
Height-difference corresponds to plunger seal travel distance for dose
The kit includes a syringe loading guide and a syringe delivery ring configured so that a first height of the syringe loading guide greater than a second height of the proximal segment corresponds to a distance the plunger seal travels within the barrel, delivering a small volume dose of medication.
Delivery ring with lumen and sidewall opening and stepped proximal/distal segments
A syringe delivery ring includes a lumen and a sidewall opening from a proximal end to a distal end, configured to permit the plunger rod to be slidably received within the lumen, and includes a proximal segment and a distal segment wherein the proximal segment has a smaller outer diameter than the distal segment.
Loading guide coupling archway and proximal-facing/distance mapping to dose
A syringe loading guide includes a proximal-facing surface, a distal-facing surface, and a coupling archway configured to attach to the proximal segment during loading, such that when coupled a distance between the proximal-facing surface and the proximal end of the syringe delivery ring corresponds to the small volume dose of medication to be delivered.
Overall, the claim coverage is directed to geometrically controlled dosing using the cooperative interaction of a syringe delivery ring with a lumen/sidewall opening and stepped proximal/distal segments, and a syringe loading guide with an attaching coupling archway and defined proximal-facing/distance relationships that correspond to a dose-related plunger-seal travel or an equivalent coupled-distance mapping.
Stated Advantages
Enables accurately loading a small volume dose of medication within a syringe and delivering the small volume dose of medication at a treatment site.
Documented Applications
Example ocular surgery use is disclosed.
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