Ophthalmic cannula insertion tool and method
First Claim
1. An ophthalmic trocar comprising:
- a handle having a top surface and a bottom surface, the handle includinga body portion having a longitudinal axis extending along a longitudinal direction;
a pair of arms, each arm extending from the body portion in the longitudinal direction to a free, distal end such that the distal ends of each arm are not connected to one another and having an inner surface, the pair of arms at least partially defining a longitudinally extending aperture that is visible during use; and
a rib on each arm, each rib extending from the inner surface of its respective arm into the longitudinally extending aperture;
a slide positioned between the pair of arms, the slide having a channel configured to receive the rib, and movable along the ribs in the longitudinal direction between a retracted position and an extended position; and
a needle coupled to the slide and movable along with the slide between the retracted position and the extended position, the needle positioned substantially entirely within an outer periphery of the handle in the retracted position, at least a portion of the needle extending beyond the periphery of the handle in the extended position.
1 Assignment
0 Petitions
Accused Products
Abstract
A cannula insertion tool having a needle movable between a retracted position and an extended position. In some embodiments, the needle can be retracted within the periphery of a handle of the insertion tool when not in use to protect the needle. When the needle is needed for surgical use, the needle can be extended at least partially beyond the outer periphery of the handle. The needle can be coupled to a slide movable relative to the handle between the retracted position and the extended position. The slide can be secured in each position to prevent unintentional movement of the slide. A cannula can be positioned on the needle when the needle is in the retracted position, and can be retained upon the needle by a member extending toward the cannula.
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Citations
20 Claims
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1. An ophthalmic trocar comprising:
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a handle having a top surface and a bottom surface, the handle including a body portion having a longitudinal axis extending along a longitudinal direction; a pair of arms, each arm extending from the body portion in the longitudinal direction to a free, distal end such that the distal ends of each arm are not connected to one another and having an inner surface, the pair of arms at least partially defining a longitudinally extending aperture that is visible during use; and a rib on each arm, each rib extending from the inner surface of its respective arm into the longitudinally extending aperture; a slide positioned between the pair of arms, the slide having a channel configured to receive the rib, and movable along the ribs in the longitudinal direction between a retracted position and an extended position; and a needle coupled to the slide and movable along with the slide between the retracted position and the extended position, the needle positioned substantially entirely within an outer periphery of the handle in the retracted position, at least a portion of the needle extending beyond the periphery of the handle in the extended position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An ophthalmic trocar comprising:
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a handle having a top surface and a bottom surface, the handle including a body portion having a longitudinal axis extending along a longitudinal direction; a pair of arms extending from the body portion in the longitudinal direction, the arms at least partially defining a longitudinally extending aperture that is visible during use, each arm having an inner surface, each of the arms having a first proximal end, integral with the body portion, and a free, distal end such that the distal ends of each arm are not connected to one another; and a rib on each arm, each rib extending from the inner surface of its respective arm into the longitudinally extending aperture; a slide positioned between the pair of arms, the slide having a channel configured to receive the rib, and movable along the ribs in the longitudinal direction between a retracted position and an extended position; and a needle coupled to the slide and movable along with the slide between the retracted position and the extended position, the needle positioned substantially entirely within an outer periphery of the handle in the retracted position, at least a portion of the needle extending beyond the periphery of the handle in the extended position. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification