Minimal pulsation ophthalmic probe
First Claim
Patent Images
1. An ophthalmic apparatus for performing an ocular surgery, comprising:
- an ophthalmic probe body graspable by a user;
a cutter extending from the body and comprising an inner cutting member and a needle, the inner cutting member being at least partially disposed within and moveable relative to the needle, the inner cutting member having a lumen having a first diameter, the needle having a distal end with a port formed therein for receiving patient tissue;
an aspiration tube within the probe body disposed to extend from an end of the inner cutting member to an aspiration line from the probe body, the aspiration tube having a second diameter greater than the first diameter to facilitate flow of aspiration fluid;
a motor within the body configured to actuate the inner cutting member relative to the needle and configured to actuate the inner cutting member relative to the aspiration tube; and
a drive shaft connected to the motor, wherein the drive shaft is larger than the aspiration tube, the aspiration tube being disposed within the drive shaft.
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Abstract
An ophthalmic apparatus for performing an ocular surgery may include an ophthalmic probe body having an inner cutting member at least partially disposed within and moveable relative to an aspiration tube within the probe body to facilitate flow of aspiration fluid. A motor within the body may be configured to actuate the inner cutting member relative to the aspiration tube.
84 Citations
22 Claims
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1. An ophthalmic apparatus for performing an ocular surgery, comprising:
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an ophthalmic probe body graspable by a user; a cutter extending from the body and comprising an inner cutting member and a needle, the inner cutting member being at least partially disposed within and moveable relative to the needle, the inner cutting member having a lumen having a first diameter, the needle having a distal end with a port formed therein for receiving patient tissue; an aspiration tube within the probe body disposed to extend from an end of the inner cutting member to an aspiration line from the probe body, the aspiration tube having a second diameter greater than the first diameter to facilitate flow of aspiration fluid; a motor within the body configured to actuate the inner cutting member relative to the needle and configured to actuate the inner cutting member relative to the aspiration tube; and a drive shaft connected to the motor, wherein the drive shaft is larger than the aspiration tube, the aspiration tube being disposed within the drive shaft. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An ophthalmic apparatus for performing an ocular surgery, comprising:
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an ophthalmic probe body graspable by a user; a cutter extending from the body and comprising an inner cutting member and a needle, the inner cutting member being at least partially disposed within and moveable relative to the needle, the inner cutting member having a lumen having a first diameter, the needle having a distal end with a port formed therein for receiving patient tissue; an aspiration tube fixed in place relative to the probe body and extending from an end of the inner cutting member to an aspiration line from the probe body, the aspiration tube having a second diameter greater than the first diameter to facilitate flow of aspiration fluid; a motor within the body and coupled to the inner cutting member, the motor being configured to actuate the inner cutting member relative to the needle; and a drive shaft connected to the motor, wherein the drive shaft is larger than the aspiration tube, the aspiration tube being disposed within the drive shaft. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A method of driving an inner cutting member of an ophthalmic probe, comprising:
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opening an aspiration port in a needle of a distally protruding cutter by driving a motor to drive an inner cutting member in a proximal direction, the aspiration port, the inner cutting member, and an aspiration tube forming a portion of an aspiration pathway through the ophthalmic probe, the inner cutting member having a first diameter and the aspiration tube having a second diameter greater than the first diameter, wherein driving the inner cutting member in the proximal direction includes moving the inner cutting member relative to the aspiration tube; and closing the aspiration port to cut tissue in the aspiration port by driving the motor in the ophthalmic probe to drive the inner cutting member in a distal direction relative to the needle, and displacing the inner cutting member relative to the aspiration tube, wherein driving the motor to drive the inner cutting member includes driving a drive shaft connected to the motor, wherein the drive shaft is larger than the aspiration tube, the aspiration tube being disposed within the drive shaft. - View Dependent Claims (20, 21, 22)
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Specification