Device for dispensing intraocular substances
First Claim
Patent Images
1. An ophthalmic injection device, comprising:
- a pistol-shaped housing having a grip handle and an elongated slot formed by straight edges formed on and extending through an outer side wall of the housing such that the slot is on an outer surface of the injection device;
a plunger mechanically coupled to the housing and configured to advance a distance into a container holding a material;
a pushing mechanism coupled to the housing and configured, upon an actuation of the pushing mechanism of a distance, to apply a force to a spring element, wherein the pushing mechanism comprises a trigger handle that pivots toward the grip handle when actuated; and
the spring element contained entirely within the housing and configured to apply the force to the plunger and configured to dampen the distance moved by the pushing mechanism from the distance moved by the plunger; and
the container,wherein the container is a cylindrical body that fits into the slot of the housing, wherein the container inserts into the slot on the outer side wall of the housing and wherein the container has a blunt distal end; and
a small delivery lumen configured to communicate with the container, wherein the small delivery lumen has an outlet configured to be placed within a structure of an eye.
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Abstract
This disclosure relates generally to an injection device having a plunger configured to advance a distance into a container of material, such as a viscoelastic container; a trigger mechanism configured upon an actuation of the trigger mechanism to apply a first force to a spring element; and the spring element coupled to the plunger and configured to apply a second force to the plunger and which is configured to prevent exceeding a threshold maximum force applied to the container.
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Citations
26 Claims
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1. An ophthalmic injection device, comprising:
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a pistol-shaped housing having a grip handle and an elongated slot formed by straight edges formed on and extending through an outer side wall of the housing such that the slot is on an outer surface of the injection device; a plunger mechanically coupled to the housing and configured to advance a distance into a container holding a material; a pushing mechanism coupled to the housing and configured, upon an actuation of the pushing mechanism of a distance, to apply a force to a spring element, wherein the pushing mechanism comprises a trigger handle that pivots toward the grip handle when actuated; and the spring element contained entirely within the housing and configured to apply the force to the plunger and configured to dampen the distance moved by the pushing mechanism from the distance moved by the plunger; and
the container,wherein the container is a cylindrical body that fits into the slot of the housing, wherein the container inserts into the slot on the outer side wall of the housing and wherein the container has a blunt distal end; and a small delivery lumen configured to communicate with the container, wherein the small delivery lumen has an outlet configured to be placed within a structure of an eye. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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Specification