Vibrating surgical device for removal of vitreous and other tissue
First Claim
1. An ophthalmic surgical device comprising:
- a housing having a distal end and a proximal end;
a cannula attached to the housing distal end and having a distal tip with at least one port in communication with a lumen extending through the cannula and in communication with an aspiration path in the housing and wherein a cross-sectional area of the port is less than a cross-sectional area of the lumen;
a vibration source held within the housing for vibrating the distal tip of the cannula for assisting in vitreous and other tissue removal from a patient'"'"'s eye;
an aspiration source connected to the aspiration path for applying a negative pressure to the lumen and the at least one port for removing fluids and the vitreous and other tissue from the eye; and
wherein the vibration source and the aspiration source together create a periodic bi-directional flow of the vitreous and other tissue through the port during aspiration without creating cavitation externally of the distal tip.
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Accused Products
Abstract
An ophthalmic surgical device (10) includes a housing (12) having a distal end (14) and a proximal end (16). A cannula (18) is attached to the housing distal end (14) and has a distal tip (20) with at least one port (22) in communication with a lumen (19) extending through the cannula (18) and in communication with an aspiration path (24) in the housing (12). A vibration source (26) is held within the housing (12) for vibrating the distal tip (20) for assisting in vitreous and other tissue removal. An aspiration source (152) connected to the aspiration path (24) for applying a negative pressure to the lumen (19) and the at least one port (22) for removing fluids and the vitreous and other tissue from the eye. The vibration source (26) and the aspiration source (152) together create a periodic bi-directional flow of tissue through the port (22) without creating cavitation externally of the distal tip (20).
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Citations
21 Claims
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1. An ophthalmic surgical device comprising:
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a housing having a distal end and a proximal end; a cannula attached to the housing distal end and having a distal tip with at least one port in communication with a lumen extending through the cannula and in communication with an aspiration path in the housing and wherein a cross-sectional area of the port is less than a cross-sectional area of the lumen; a vibration source held within the housing for vibrating the distal tip of the cannula for assisting in vitreous and other tissue removal from a patient'"'"'s eye; an aspiration source connected to the aspiration path for applying a negative pressure to the lumen and the at least one port for removing fluids and the vitreous and other tissue from the eye; and wherein the vibration source and the aspiration source together create a periodic bi-directional flow of the vitreous and other tissue through the port during aspiration without creating cavitation externally of the distal tip. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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Specification