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US 6,962,488 B2Granted
Surgical cassette having an aspiration pressure sensor
AssigneeAlcon Inc.
InventorsSherman G. Davis, Raphael Gordon, Valentine P. Injev, Kurt D. Leukanech, Michael D. Morgan, Mel M. Oliveira, Gary P. Sorensen, Daniel J. Wilson
Life of this patent
Estimating the term…
Abstract
A cassette having a molded flow channel contained on an elastomeric sheet that is bonded or mechanically attached to a rigid substrate. The flow channel projects outwardly from the exterior of the cassette so that a peristaltic pump having pump head rollers mounted radially from the axis of rotation of the pump motor compress the elastomeric flow channels against the rigid substrate during operation.
Claims44
A cassette, comprising:
- a) a body having an exterior;
- b) a relatively flexible sheet attached to the body, the sheet containing at least one molded fluid channel, the fluid channel projecting outwardly from the exterior of the body;
- c) an aspiration pressure sensor interface on the exterior of the body, the interface having a well, the well having an outlet;
- d) a first aspiration exit port in the well, the aspiration exit port being located above a bottom of the well;
- and
- e) at least one vent port in the pressure sensor well, the vent port providing a second aspiration exit port into the well.
3 more elements
A cassette, comprising:
- a) a body having an exterior;
- b) a relatively flexible sheet attached to the body, the sheet containing at least one molded fluid channel, the fluid channel projecting outwardly from the exterior of the body;
- c) an aspiration pressure sensor interface on the exterior of the body;
- d) a raised boss around the pressure sensor interface;
- e) a pressure sensor well and an aspiration exit port located above a bottom of the well;
- and
- f) at least one vent port in the pressure sensor well.
4 more elements
A cassette, comprising:
- a) a body having an exterior;
- b) a relatively flexible sheet attached to the body, the sheet containing at least one molded fluid channel, the fluid channel projecting outwardly from the exterior of the body and containing at least one pinch valve site;
- c) an aspiration pressure sensor interface on the exterior of the body;
- d) a raised boss around the pressure sensor interface;
- e) a plurality of identifying tabs projecting from the exterior of the body;
- f) a pressure sensor well and an aspiration exit port located above a bottom of the well;
- and
- g) at least one vent port in the pressure sensor well.
5 more elements
A cassette, comprising:
- a) a body having an exterior, the exterior having sides;
- b) a relatively flexible sheet attached to the body, the sheet containing at least one molded fluid channel, the fluid channel projecting outwardly from the exterior of the body;
- c) an aspiration pressure sensor interface on the exterior of the body;
- d) a plurality of latching surfaces formed in the sides of the body;
- e) a pressure sensor well and an aspiration exit port located above a bottom of the well;
- and
- f) at least one vent port in the pressure sensor well.
4 more elements
A cassette, comprising:
- a) a body having an exterior, the exterior having sides;
- b) a relatively flexible sheet attached to the body, the sheet containing at least one molded fluid channel, the fluid channel projecting outwardly from the exterior of the body and containing at least one pinch valve site;
- c) an aspiration pressure sensor interface on the exterior of the body;
- d) a raised boss around the pressure sensor interface;
- e) a plurality of identifying tabs projecting from the exterior of the body;
- f) a plurality of latching surfaces formed in the sides of the body;
- g) a pressure sensor well and an aspiration exit port located above a bottom of the well;
- and
- h) at least one vent port in the pressure sensor well.
6 more elements
A cassette, comprising:
- a) a body having an exterior;
- b) a relatively flexible sheet attached to the body, the sheet containing at least one molded fluid channel, the fluid channel projecting outwardly from the exterior of the body;
- c) an aspiration pressure sensor interface on the exterior of the body, the interface having a well, the well having an outlet;
- d) a plurility of alignment features in the exterior;
- e) a pressure sensor well and a first aspiration exit port located above a bottom of the well;
- and
- f) at least one vent port in the pressure well, the vent port providing a second aspiration exit port into the well.
4 more elements
Dependencies are inferred from the claim text.