Retractable cannula assembly
AssigneeAlcon Inc.
InventorsPhilipp Schaller, Reto Grueebler, Thomas Linsi
Life of this patent
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Abstract
Disclosed herein are surgical instruments used in ophthalmic surgical procedures and associated methods. Particular embodiments relate to a cannula assembly having a cannula tip that is retractable. The cannula assembly may comprise a cannula hub. The cannula assembly may further comprise an outer tube that extends from a distal end the cannula hub. The cannula assembly may further comprise an inner tube that extends from the distal end of the cannula hub and is disposed in the outer tube, wherein the inner tube has a cannula tip that extends from the outer tube and is retractable into the outer tube.
Claims20
An apparatus for use in a surgical procedure, comprising:
- a cannula assembly comprising:
- a cannula hub;
- a connector piece configured to receive a distal end of the cannula hub;
- an outer tube that extends from the distal end of the cannula hub and is coupled to the connector piece;
- an inner tube that extends from the distal end of the cannula hub and is disposed in the outer tube;
- and
- an actuator comprising a first end connector coupled to the connector piece and a second end connector coupled to the cannula hub,
- wherein the actuator is configured to transition from an initial state into a deformed state when a force is applied to the actuator, and
- wherein the inner tube has a cannula tip that extends from the outer tube when the actuator is in the initial state and retracts into the outer tube as the actuator transitions from the deformed state into the initial state by a biasing force provided by the actuator.
A system for ophthalmic surgical procedures, comprising:
- a console comprising a housing, a display screen supported by the console, and a processor;
- a cannula assembly comprising:
- a cannula hub;
- a connector piece configured to receive a distal end of the cannula hub;
- an outer tube that extends from the distal end of the cannula hub and is coupled to the connector piece;
- an actuator comprising a first end connector coupled to the connector piece and a second end connector coupled to the cannula hub;
- an inner tube that extends from the distal end of the cannula hub and is disposed in the outer tube, wherein the inner tube has a cannula tip that extends from the outer tube when the actuator is in an initial state and retracts into the outer tube as the actuator transitions from a deformed state into the initial state by a biasing force provided by the actuator;
- and
- a supply line configured to couple the cannula assembly to the console.
Dependencies are inferred from the claim text.