Intraocular lens injector
IOL injectors and associated methods are described. An IOL injector may include a collapsible portion configured to reduce the length of the IOL injector when the collapsible portion is altered from an uncollapsed configuration to a collapsed configuration. In some instances, an IOL may be advanced from a storage location to a dwell location when the collapsible portion is altered from the uncollapsed configuration to the collapsed configuration. An IOL injector may include one or more of a hydraulic damper and a ribbed damper.
1. An intraocular lens (IOL) injector having a collapsible injector body configured to reduce a length of the IOL injector upon an advancement of an IOL from a storage location to a dwell location, the IOL injector comprising:
an injector body comprising:
a main body having a proximal end and a distal end and defining a passage therethrough;
an IOL storage compartment, the storage compartment adapted to store an IOL in a storage location;
a nozzle coupled to the distal end of the main body, the nozzle comprising:
a bore; and
a distal opening in fluid communication with the bore; and
a collapsible portion disposed between the main body and the nozzle, the collapsible portion moveable between a collapsed configuration and an uncollapsed configuration and comprising:
a first sleeve; and
a second sleeve telescopingly received into the first sleeve;
a plunger received into and movably within the injector body, the collapsible portion moveable from the uncollapsed configuration in which the first sleeve is at a first position relative to the second sleeve to the collapsed configuration in which the first sleeve is at a second position relative to the second sleeve and a plunger tip moveable from a first plunger tip location to a second plunger tip location distal of the first plunger tip location when the collapsible portion is moved from the uncollapsed configuration to the collapsed configuration; and
a hydraulic damper disposed within the injector body, the hydraulic damper comprising:
a first cylinder;
a second cylinder; and
a restrictor, the restrictor disposed between the first cylinder and the second cylinder, wherein restrictor comprises an orifice in fluid communication with the first cylinder and the second cylinder, wherein the plunger comprises a body portion received and slideable within the second cylinder and the plunger tip received and slideable with the first cylinder, and wherein the hydraulic damper further comprises a fluid disposed between a proximal end of the plunger rod and a distal end of the body portion.
2. The IOL injector of claim 1 , wherein the first plunger tip position is proximal to the storage location and wherein the plunger tip is adapted to engage an IOL disposed in the storage location and move the IOL from the storage location within the storage compartment to a dwell location within the nozzle when the collapsible portion is moved from the uncollapsed configuration to the collapsed configuration.
3. The IOL injector of claim 1 , wherein the second sleeve is concentrically disposed within the first sleeve.
4. The IOL injector of claim 1 , wherein the first cylinder has a first cross-sectional size and wherein the second cylinder has a second cross-sectional size.
5. The IOL injector of claim 4 , wherein the first cross-sectional size is larger than the second cross-sectional size.