DISPOSABLE HANDHELD PHACOMORCELLATION DEVICE
First Claim
1. A phacomorcellation device configured to prevent lens fragments from floating to a posterior portion of an eye, the phacomorcellation device comprising:
- a stationary outer tubular cutting member having a proximal end and a distal end, the proximal end coupled to a housing, the distal end having a first opening, the first opening having a first cutting edge and a first point formed by two intersecting arcs, the first point positioned on a first side of the first opening;
a motor positioned within the housing and selectively controllable by one or more user control inputs coupled to the housing; and
an inner cutting member having a proximal end and a distal end, the inner cutting member positioned within the stationary outer tubular cutting member, the motor coupled to the proximal end to rotate the inner cutting member relative to the stationary outer tubular cutting member, the inner cutting member having a second opening that is substantially symmetrical to the first opening, the second opening having a second cutting edge and a second point formed by two intersecting arcs;
wherein the first opening is substantially closed when the inner cutting member is rotated into a closed position.
1 Assignment
0 Petitions
Accused Products
Abstract
Disposable handheld phacomorcellation devices and methods for removing lens fragments from an eye of a patient are disclosed. In one embodiment, the phacomorcellation device includes a stationary outer tubular cutting member and a rotatable inner cutting member positioned within the stationary outer tubular cutting member. The outer tubular cutting member and the rotatable inner cutting member each include at least one cutting port having at least one cutting edge. The at least one cutting edge of the outer tubular cutting member and the at least one cutting edge of the inner cutting member cooperate to form a bird beak cutting structure as the inner cutting member rotates with respect to the outer cutting member. The cutting port of the outer tubular cutting member can be substantially closed during rotation of the inner cutting member, thereby preventing lens fragments from floating toward a posterior region of the eye.
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Citations
25 Claims
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1. A phacomorcellation device configured to prevent lens fragments from floating to a posterior portion of an eye, the phacomorcellation device comprising:
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a stationary outer tubular cutting member having a proximal end and a distal end, the proximal end coupled to a housing, the distal end having a first opening, the first opening having a first cutting edge and a first point formed by two intersecting arcs, the first point positioned on a first side of the first opening; a motor positioned within the housing and selectively controllable by one or more user control inputs coupled to the housing; and an inner cutting member having a proximal end and a distal end, the inner cutting member positioned within the stationary outer tubular cutting member, the motor coupled to the proximal end to rotate the inner cutting member relative to the stationary outer tubular cutting member, the inner cutting member having a second opening that is substantially symmetrical to the first opening, the second opening having a second cutting edge and a second point formed by two intersecting arcs; wherein the first opening is substantially closed when the inner cutting member is rotated into a closed position. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 14, 15, 24, 25)
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12. (canceled)
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16. (canceled)
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17. (canceled)
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18. (canceled)
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19. (canceled)
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20. (canceled)
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21. A phacomorcellation surgical instrument configured to prevent lens fragments from floating to a posterior portion of an eye, the phacomorcellation surgical instrument comprising:
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a first stationary elongate tubular member having a distal end and a proximal end, the proximal end coupled to a housing, the distal end having a first opening, the first opening having a first cutting edge and a first point formed by two intersecting arcs, the first point positioned on a first side of the first opening; a motor positioned within the housing and controllable by user inputs coupled to the housing; and a second elongate member having a proximal end and a distal end, the second elongate member positioned within the first stationary elongate tubular member and the first opening, the motor coupled to the proximal end to rotate the second elongate member relative to the stationary elongate tubular member, the distal end having a second opening that is substantially symmetrical to the first opening, the second opening having a second cutting edge and a second point formed by two intersecting arcs, the second point positioned on an opposite side relative to the first opening; wherein the first opening is substantially closed when the second elongate member is rotated into a closed position.
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22. (canceled)
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23. (canceled)
Specification