Pulsed vacuum cataract removal system
First Claim
1. An aspiration system that can be coupled to a medical handpiece, comprising:
- an aspiration tube;
a vacuum generator adapted to create a vacuum pressure within said aspiration tube; and
, a pulse generator adapted to create a plurality of vacuum pulses within said aspiration tube.
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Accused Products
Abstract
An ophthalmic cutter system that includes a cutter adapted to cut tissue such as a cataract lens and an irrigation handpiece adapted to hold the lens. The irrigation handpiece may be coupled to an irrigation system that introduces an irrigation fluid to the surgical site through the handpiece. The cutter may be coupled to an aspiration system that provides vacuum pulses to the surgical site. The vacuum pulses may pull tissue into a wire located at a distal end of a cutter cannula. The pulses may break and emulsify the tissue which is then aspirated through the cannula by the aspiration system. The wire may be connected to a controller that provides a current which is transformed into heat. The heat may assist in emulsifying the tissue.
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Citations
29 Claims
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1. An aspiration system that can be coupled to a medical handpiece, comprising:
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an aspiration tube;
a vacuum generator adapted to create a vacuum pressure within said aspiration tube; and
,a pulse generator adapted to create a plurality of vacuum pulses within said aspiration tube. - View Dependent Claims (2, 3, 4)
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5. An medical handpiece, comprising:
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a first cannula that has an inner passage which is in fluid communication with a distal opening; and
,a wire that extends across said distal opening. - View Dependent Claims (6, 7, 8)
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9. A tissue removal system, comprising:
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a cutter adapted to cut a tissue;
an irrigation handpiece adapted to hold the tissue;
an aspiration system coupled to said cutter; and
,an irrigation system coupled to said irrigation handpiece. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 19, 20, 21, 22, 23, 24, 26, 27, 28, 29)
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18. A medical cutter, comprising:
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a first cannula that has an inner passage that is in fluid communication with a distal opening;
a wire that extends across said distal opening;
an aspiration tube that is in fluid communication with said inner passage;
a vacuum generator adapted to create a vacuum pressure within said aspiration tube; and
,a pulse generator adapted to create a plurality of vacuum pulses within said aspiration tube.
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25. A medical device, comprising:
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a first cannula that has an inner passage which is in fluid communication with a distal opening;
a heating element that is coupled to said first cannula; and
,a controller that provides energy to said heating element.
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Specification