Tissue-Sensing Vitrectomy Surgical Systems and Methods
First Claim
1. A device for removing a tissue from an eye of a patient during a medical procedure, the device comprising:
- a housing;
a cutter extending from a distal end of the housing along a longitudinal axis, the cutter comprising;
an outer cutting tube coupled to the housing, the outer cutting tube including an outer surface and an inner surface;
an outer port formed in the outer cutting tube, the outer port comprising an aperture extending from the outer surface to the inner surface of the outer cutting tube, the outer port sized to receive the tissue;
an inner cutting tube disposed within the outer cutting tube, the inner cutting tube having a distal tube end slidable along the longitudinal axis between a retracted position proximal to the outer port and an extended position distal to the outer port; and
a tissue sensor positioned on the cutter and configured to measure a characteristic of the tissue received within the outer port to identify when nontarget tissue enters the outer port; and
an actuator positioned within the housing and configured to reciprocate the inner cutting member to slide the distal tube end between the retracted position and the extended position to open and close the outer port and cut the tissue.
3 Assignments
0 Petitions
Accused Products
Abstract
A device for removing a tissue from an eye of a patient is disclosed, comprising a housing, a cutter, and an actuator. The cutter comprises an outer cutting tube coupled to the housing, an outer port formed in the outer cutting tube, an inner cutting tube slidable along the longitudinal axis within the outer cutting tube between a retracted position proximal to the outer port and an extended position distal to the outer port, and a tissue sensor positioned on the cutter and configured to measure a characteristic of the tissue received within the outer port to identify when nontarget tissue enters the outer port. The actuator within the housing is configured to reciprocate the inner cutting member between the retracted position and the extended position to open and close the outer port and cut the tissue.
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Citations
31 Claims
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1. A device for removing a tissue from an eye of a patient during a medical procedure, the device comprising:
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a housing; a cutter extending from a distal end of the housing along a longitudinal axis, the cutter comprising; an outer cutting tube coupled to the housing, the outer cutting tube including an outer surface and an inner surface; an outer port formed in the outer cutting tube, the outer port comprising an aperture extending from the outer surface to the inner surface of the outer cutting tube, the outer port sized to receive the tissue; an inner cutting tube disposed within the outer cutting tube, the inner cutting tube having a distal tube end slidable along the longitudinal axis between a retracted position proximal to the outer port and an extended position distal to the outer port; and a tissue sensor positioned on the cutter and configured to measure a characteristic of the tissue received within the outer port to identify when nontarget tissue enters the outer port; and an actuator positioned within the housing and configured to reciprocate the inner cutting member to slide the distal tube end between the retracted position and the extended position to open and close the outer port and cut the tissue. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A vitrectomy surgical system comprising:
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a vitrectomy probe including a cutter comprising an outer cutting tube, an outer port disposed on the outer cutting tube, and an inner cutting tube disposed within the outer cutting tube, the inner cutting tube being movable relative to the outer cutting tube to cut tissue during a vitrectomy procedure; an actuator configured to move the inner cutting tube relative to the outer cutting tube to open and close the outer port to cut tissue aspirated through the outer port into the outer cutting tube; at least one tissue sensor coupled to the vitrectomy probe adjacent the outer port, the tissue sensor configured to measure a characteristic of the tissue aspirated through the outer port; and a processor communicatively coupled to the at least one tissue sensor and operable to control the movement of the inner cutting tube based on the measured characteristic. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. A method of treating an ophthalmic condition, the method comprising:
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inserting a probe through a sclera into a vitreous chamber of a patient, the probe including a cutter comprising an inner cutting tube slidably disposed within an outer cutting tube, an outer port in the outer cutting tube, and at least one tissue sensor positioned near the outer port; measuring a tissue characteristic of tissue aspirated into the cutter with the at least one tissue sensor; communicating the tissue characteristic to a processor operable to control the motion of the inner cutting tube relative to the outer cutting tube; evaluating the measured tissue characteristic with a logic algorithm of the processor; and suspending the motion of the inner cutting tube based upon the measured tissue characteristic. - View Dependent Claims (25, 26, 27, 28, 29, 30, 31)
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Specification