Cassette for measuring parameters of blood
First Claim
1. A system for measuring one or more parameters of blood comprising:
- a casing having walls defining a chamber for receiving a quantity of blood;
at least one sensor connected to said casing adjacent said chamber for sensing at least one parameter of the blood in said chamber;
a measuring device including a housing, at least one light source connected to the housing and at least one light detector connected to the housing; and
a connector for releasably coupling said casing to said housing, said connector including a first coupling connected to said casing and a second coupling connected to said housing, said first coupling having a convex configuration and said second coupling having a concave configuration.
2 Assignments
0 Petitions
Accused Products
Abstract
A cassette useful for measuring one or more parameters of blood in, for example, a cardiopulmonary bypass circuit has a convex coupling for releasable connection with a mating, concave coupling of a measuring device. The coupling of the cassette includes flexible leg portions that can be moved toward each other under the influence of finger pressure to detach the cassette from the measuring device. Optionally, the cassette includes a body carrying one or more sensors, and also includes a casing that can be detached from the body when desired. A shunt circuit arrangement enables the cassette to be connected to the bypass circuit either before or during a surgical procedure.
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Citations
67 Claims
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1. A system for measuring one or more parameters of blood comprising:
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a casing having walls defining a chamber for receiving a quantity of blood; at least one sensor connected to said casing adjacent said chamber for sensing at least one parameter of the blood in said chamber; a measuring device including a housing, at least one light source connected to the housing and at least one light detector connected to the housing; and a connector for releasably coupling said casing to said housing, said connector including a first coupling connected to said casing and a second coupling connected to said housing, said first coupling having a convex configuration and said second coupling having a concave configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A cassette for measuring one or more parameters of blood comprising:
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a casing having walls defining a chamber for receiving a quantity of blood; at least one sensor connected to said casing adjacent said chamber for sensing at least one parameter of the blood in said chamber; and a coupling for connecting said casing to a blood parameter measurement device, said coupling having a convex configuration with a central section, wherein said at least one sensor is located in said central section, and wherein said coupling includes at least one flexible leg portion with a tab for releasable connection to the blood parameter measurement device, said at least one leg portion extending in a direction away from said central section, said tab extending outwardly in a lateral direction from said at least one leg portion. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. A cassette for measuring one or more parameters of blood comprising:
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a casing having walls defining a chamber for receiving a quantity of blood; at least one sensor connected to said casing adjacent said chamber for sensing at least one parameter of the blood in said chamber; and a coupling for connecting said casing to a blood parameter measurement device, said coupling having a convex configuration and having two outer surfaces extending in respective reference planes that are oriented at an angle in the range of about 28 degrees to about 32 degrees relative to each other. - View Dependent Claims (24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34)
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35. A cassette for measuring one or more parameters of blood comprising:
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a casing having walls defining a chamber for receiving a quantity of blood; at least one sensor connected to said casing adjacent said chamber for sensing at least one parameter of the blood in said chamber; and a coupling having a convex configuration for connecting said casing to a blood parameter measurement device, wherein said chamber has a longitudinal axis and includes an inlet portion, an outlet portion and a middle portion between said inlet portion and said outlet portion, wherein said inlet portion and said outlet portion each have a generally circular configuration in reference planes perpendicular to said longitudinal axis, wherein said middle portion has a non-circular configuration in reference planes perpendicular to said longitudinal axis, said circular configurations of said inlet portion and said outlet portion having respective areas that are each approximately equal to the area of said non-circular configuration of said middle portion. - View Dependent Claims (36)
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37. A cassette adapted for releasable coupling to a blood parameter measuring device for measuring one or more parameters of blood, said cassette comprising:
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a body; at least one sensor connected to said body for sensing at least one parameter of the blood; a casing having walls sections at least partially defining a chamber, an inlet for admitting blood to said chamber and an outlet for discharging blood from said chamber; and a connector for detachably coupling said body to said casing in such a manner that said at least one sensor is located next to said chamber for sampling one or more parameter of blood flowing through said chamber. - View Dependent Claims (38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53)
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54. A cassette adapted for releasable coupling to a blood parameter measuring device for measuring one or more parameters of blood, said cassette comprising:
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a body; at least one sensor connected to said body for sensing at least one parameter of the blood; and a casing detachably coupled to said body, said casing having walls defining an elongated chamber for receiving a quantity of blood, said casing also having an external rib extending along its length at a location remote from said body. - View Dependent Claims (55, 56, 57, 58, 59, 60, 61)
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62. A cassette for measuring one or more parameters of blood comprising:
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a casing having walls defining a chamber for receiving a quantity of blood; at least one sensor connected to said casing adjacent said chamber for sensing at least one parameter of blood in said chamber; and a coupling for connecting said casing to a blood parameter measurement device, said coupling including a generally oval-shaped recess and wherein said at least one sensor is located in said recess. - View Dependent Claims (63, 64, 65, 66, 67)
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Specification