Systems and methods for small bore aspiration
First Claim
Patent Images
1. An assembly for a phacoemulsification surgical system, comprising:
- an irrigation system configured to provide irrigating fluid to a phacoemulsification hand piece to irrigate a surgical site; and
an aspiration system arranged to aspirate aspirating fluid from the surgical site, comprising;
a flexible small bore aspiration tubing configured to be in fluid communication with an aspiration path of the phacoemulsification hand piece, the small bore aspiration tubing having a nominal inner diameter smaller than about 0.050 inch to reduce levels of occlusion surge within the surgical system; and
a peristaltic pump in communication with the small bore aspiration tubing operable to create a flow through the small bore aspiration tubing;
wherein the small bore aspiration tubing comprises a flared portion on the inner diameter of at least one end, wherein when in an unloaded condition, the flared portion has an inner diameter larger than the nominal inner diameter of the small bore aspiration tubing;
a connector configured to receive at least a portion of the flared portion of the small bore aspiration tubing, the connector being sized to apply radial compression on the flared portion when the flared portion is inserted in the connector such that when the small bore aspiration tubing is disposed within the connector, the inner diameter of the flared portion is about the same diameter as the nominal diameter of the small bore aspiration tubing.
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Abstract
An assembly for a phacoemulsification surgical system includes an aspiration system arranged to aspirate fluid from a surgical site. The aspiration system includes an aspiration path within the phacoemulsification hand piece and includes a flexible small bore aspiration tubing in fluid communication with the aspiration path. The small bore aspiration tubing has a nominal inner diameter smaller than about 0.050 inch to reduce levels of occlusion surge within the surgical system. A high-output, peristaltic pump communicates with the small bore aspiration tubing and is operable to create a flow through the small bore aspiration tubing.
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Citations
15 Claims
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1. An assembly for a phacoemulsification surgical system, comprising:
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an irrigation system configured to provide irrigating fluid to a phacoemulsification hand piece to irrigate a surgical site; and an aspiration system arranged to aspirate aspirating fluid from the surgical site, comprising; a flexible small bore aspiration tubing configured to be in fluid communication with an aspiration path of the phacoemulsification hand piece, the small bore aspiration tubing having a nominal inner diameter smaller than about 0.050 inch to reduce levels of occlusion surge within the surgical system; and a peristaltic pump in communication with the small bore aspiration tubing operable to create a flow through the small bore aspiration tubing; wherein the small bore aspiration tubing comprises a flared portion on the inner diameter of at least one end, wherein when in an unloaded condition, the flared portion has an inner diameter larger than the nominal inner diameter of the small bore aspiration tubing; a connector configured to receive at least a portion of the flared portion of the small bore aspiration tubing, the connector being sized to apply radial compression on the flared portion when the flared portion is inserted in the connector such that when the small bore aspiration tubing is disposed within the connector, the inner diameter of the flared portion is about the same diameter as the nominal diameter of the small bore aspiration tubing. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An assembly for a phacoemulsification surgical system, comprising:
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an irrigation system configured to provide irrigating fluid to a phacoemulsification hand piece to irrigate a surgical site; and an aspiration system arranged to aspirate aspirating fluid from the surgical site, comprising; a flexible small bore aspiration tubing configured to be in fluid communication with an aspiration path of the phacoemulsification hand piece, the small bore aspiration tubing having a nominal inner diameter smaller than about 0.050 inch to reduce levels of occlusion surge within the surgical system; and a peristaltic pump in communication with the small bore aspiration tubing operable to create a flow through the small bore aspiration tubing; wherein the small bore aspiration tubing comprises a flared portion on the inner diameter of at least one end, wherein when in an unloaded condition, the flared portion has an inner diameter larger than the nominal inner diameter of the small bore aspiration tubing; a connector disposed between the aspiration path in the hand piece and the small bore aspiration tubing, the connector comprising a neck for passage of the aspiration fluid, the neck having a diameter substantially matching the nominal inner diameter of the small bore aspiration tubing; wherein the connector comprises two female ends sized respectively to receive the aspiration path and the small bore aspiration tubing, the connector having a smooth transition from a largest inner diameter of the connector down to the neck diameter. - View Dependent Claims (8)
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9. A small bore aspiration system arranged to receive aspiration fluid from an ultrasonic tip used in a phacoemulsification surgical assembly, comprising:
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an aspiration path within an phacoemulsification hand piece, the aspiration path extending from the ultrasonic tip and being arranged and configured to permit flow of the aspiration fluid through the hand piece; a flexible small bore aspiration tubing in fluid communication with the aspiration path, the small bore aspiration tubing having a nominal inner diameter smaller than about 0.050 inch to reduce levels of occlusion surge within the surgical assembly, the inner diameter being substantially consistent through the small bore aspiration tubing; and a high-output, peristaltic pump in communication with the small bore aspiration tubing; a connector configured to receive at least a portion of the flared portion of the small bore aspiration tubing, the connector being sized to apply radial compression on the flared portion when the flared portion is inserted in the connector such that when the small bore aspiration tubing is disposed within the connector, the inner diameter of the flared portion is about the same diameter as the nominal diameter of the small bore aspiration tubing; wherein the small bore aspiration tubing comprises a flared portion on the inner diameter of at least one end, wherein when in an unloaded condition, the flared portion has an inner diameter larger than the nominal inner diameter of the small bore aspiration tubing. - View Dependent Claims (10, 11, 12)
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13. A small bore aspiration system arranged to receive aspiration fluid from an ultrasonic tip used in a phacoemulsification surgical assembly, comprising:
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an aspiration path within an phacoemulsification hand piece, the aspiration path extending from the ultrasonic tip and being arranged and configured to permit flow of the aspiration fluid through the hand piece; a flexible small bore aspiration tubing in fluid communication with the aspiration path, the small bore aspiration tubing having a nominal inner diameter smaller than about 0.050 inch to reduce levels of occlusion surge within the surgical assembly, the inner diameter being substantially consistent through the small bore aspiration tubing; and a high-output, peristaltic pump in communication with the small bore aspiration tubing; wherein the small bore aspiration tubing comprises a flared portion on the inner diameter of at least one end, wherein when in an unloaded condition, the flared portion has an inner diameter larger than the nominal inner diameter of the small bore aspiration tubing; a connector disposed between the aspiration path in the hand piece and the small bore aspiration tubing, the connector comprising a neck for passage of the aspiration fluid, the neck having a diameter substantially matching the nominal inner diameter of the small bore aspiration tubing; wherein when in an unloaded condition, the flared portion has an inner diameter larger than the nominal inner diameter of the small bore aspiration tubing, the assembly further comprising; a cassette associated with the pump; and a second connector disposed between the small bore aspiration tubing and the cassette, the second connector configured to receive at least a portion of the flared portion of the small bore aspiration tubing and to apply radial compression on the flared portion when the flared portion is inserted in the connector such that when the small bore aspiration tubing is disposed within the connector, the inner diameter of the flared portion is about the same diameter as the nominal diameter of the small bore aspiration tubing.
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14. A method for aspirating a surgical site with an aspiration system of a phacoemulsification surgical system, comprising:
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creating a vacuum in an aspiration system of a phacoemulsification system; directing fluid through a needle of a phacoemulsification hand piece; directing fluid through an aspiration passage within the hand piece; directing fluid through a small bore flexible aspiration tubing extending from the hand piece to a fluid cassette, the small bore flexible aspiration tubing having a substantially consistent nominal diameter across its length, the nominal diameter being less than about 0.050 inch, wherein the size ratio between the small bore flexible aspiration tubing inner diameter and the needle bore inner diameter is less than about 1.3; and directing fluid into a cassette and a pump configured to create a vacuum in the aspiration system; wherein directing fluid into a cassette includes directing the fluid through a connector and a radially deformed portion of the flexible tubing, the radial deformed portion of the flexible tubing having an inner diameter substantially consistent with the inner diameter of the flexible tubing. - View Dependent Claims (15)
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Specification