Multiple segmented peristaltic pump and cassette
First Claim
1. A surgical cassette configured to engage a plurality of rollers of a peristaltic pump, comprising:
- at least one sheet; and
at least one substrate coupled to the at least one sheet;
wherein the at least one sheet and the at least one substrate form at least two pump segments configured to engage the plurality of rollers of the peristaltic pump;
wherein the at least two pump segments form separate fluid paths such that fluid entering one pump segment of the at least two pump segments does not enter any other pump segment of the at least two pump segments;
wherein at least one of the at least two pump segments is configured to provide a flow profile in which a peak of a pulse from the pump segment is at least partially out of phase with a peak of a pulse from at least one other pump segment of the at least two pump segments when the at least two pump segments engage the plurality of rollers.
3 Assignments
0 Petitions
Accused Products
Abstract
In various embodiments, a surgical cassette, configured to engage peristaltic pump rollers, may include two or more pump segments between a sheet and a substrate coupled to the sheet. The two or more pump segments on the cassette may produce additional flow (e.g., approximately twice the flow for two segments as opposed to one) than if the cassette had only one pump segment engaging the roller. Further, in some embodiments, the two or more pump segments and rollers on the roller head may be configured to provide a flow profile in which a peak of a pulse from a first pump segment is at least partially out of phase with a peak of a pulse from the second pump segment. The combined resultant flow may then have a flow profile with pulsation amplitudes that are smaller than the individual pump segment pulsation amplitudes.
124 Citations
17 Claims
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1. A surgical cassette configured to engage a plurality of rollers of a peristaltic pump, comprising:
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at least one sheet; and at least one substrate coupled to the at least one sheet;
wherein the at least one sheet and the at least one substrate form at least two pump segments configured to engage the plurality of rollers of the peristaltic pump;wherein the at least two pump segments form separate fluid paths such that fluid entering one pump segment of the at least two pump segments does not enter any other pump segment of the at least two pump segments; wherein at least one of the at least two pump segments is configured to provide a flow profile in which a peak of a pulse from the pump segment is at least partially out of phase with a peak of a pulse from at least one other pump segment of the at least two pump segments when the at least two pump segments engage the plurality of rollers. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system, comprising:
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a surgical cassette, comprising; at least one sheet; and at least one substrate coupled to the at least one sheet; wherein the at least one sheet and the at least one substrate form at least two pump segments; a surgical console, comprising; a surgical cassette receiving portion configured to receive the cassette; and a roller head comprising a plurality of rollers configured to engage the at least two pump segments when the cassette is received in the cassette receiving portion; wherein the at least two pump segments form separate fluid paths such that fluid entering one pump segment of the at least two pump segments does not enter any other pump segment of the at least two pump segments; wherein at least one of the at least two pump segments is configured to provide a flow profile in which a peak of a pulse from the pump segment is at least partially out of phase with a peak of a pulse from at least one other pump segment of the at least two pump segments when the at least two pump segments engage the single roller head. - View Dependent Claims (9, 10, 11, 12)
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13. A method, comprising:
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receiving a cassette in a cassette receiving portion of a console, wherein the cassette comprises at least one sheet and at least one substrate coupled to the at least one sheet such that the at least one sheet and the at least one substrate form at least two pump segments; engaging the at least two pump segments with a roller head comprising a plurality of rollers; wherein the at least two pump segments form separate fluid paths such that fluid entering one pump segment of the at least two pump segments does not enter any other pump segment of the at least two pump segments; wherein at least one of the at least two pump segments is configured to provide a flow profile in which a peak of a pulse from the pump segment is at least partially out of phase with a peak of a pulse from at least one other pump segment of the at least two pump segments when the at least two pump segments engage the single roller head. - View Dependent Claims (14, 15, 16, 17)
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Specification