Ophthalmic device
AssigneeNew World Medical, Inc.
InventorsMalik Y. Kahook, Eric Porteous, Carlos A. Mendoza
Life of this patent
Estimating the term…
Abstract
An internal mechanism configured to pump a fluid in an ophthalmic device is provided. The internal mechanism includes an inlet port, a drive member coupled to the actuator and a plunger coupled to the drive member. The drive member provides a force that moves the plunger in a first direction when the actuator moves from an un-pressed position to a pressed position, the movement of the plunger in the first direction causing the fluid to move from the inlet port and through a cannula and causing a portion of the fluid to exit one or more orifices of the cannula. An ophthalmic device having an internal mechanism is also provided.
Claims16
An internal mechanism configured to pump a fluid in an ophthalmic device, the internal mechanism comprising:
- an inlet port;
- a drive member coupled to an actuator;
- and
- a plunger coupled to the drive member, wherein the drive member is configured to provide a force that moves the plunger in a first direction when the actuator moves from an un-pressed position to a pressed position, the movement of the plunger in the first direction causing the fluid to move from the inlet port and through a cannula and causing a portion of the fluid to exit one or more orifices of the cannula,
- wherein the drive member is a drive nut and the drive nut is coupled to a threaded portion of the plunger, wherein rotation of the drive nut in a drive rotational direction causes the plunger to advance in the first direction,
- wherein the drive nut comprises a plurality of teeth, each tooth having a flat portion and a sloped portion,
- wherein the actuator comprises a linkage arm having an arm engagement portion configured to engage the flat portions of the plurality of teeth, and
- wherein movement of the actuator to the pressed position comprises rotation of the actuator about an actuator axle, causing the linkage arm to pull up on the flat portion of a tooth of the drive nut to which the linkage arm is engaged.
An internal mechanism configured to pump a fluid in an ophthalmic device, the internal mechanism comprising:
- an inlet port;
- a drive member coupled to an actuator, the actuator comprising a plurality of actuator teeth;
- a plunger coupled to the drive member, wherein the drive member is configured to provide a force that moves the plunger in a first direction when the actuator moves from an un-pressed position to a pressed position, the movement of the plunger in the first direction causing the fluid to move from the inlet port and through a cannula and causing a portion of the fluid to exit one or more orifices of the cannula;
- and
- a trigger gear coupled to a drive gear via a drive axle, the trigger gear comprising a plurality of trigger gear teeth,
- wherein movement of the actuator to the pressed position comprises rotation of the actuator about an actuator axle, causing the actuator teeth to move along the trigger gear teeth and move the trigger gear in a drive rotational direction, the movement of the trigger gear causing the drive gear to also move in the drive rotational direction via the drive axle.
Dependencies are inferred from the claim text.