Cassette optical identification apparatus for a medication infusion system
First Claim
1. A system for providing information identifying which of a series of disposable cassettes is installed on a main unit in a medication infusion system, comprising:
- a projection located on said disposable cassette;
an optical receiving module mounted on said main unit, said optical receiving unit defining an opening therein for receiving said projection on said disposable cassette when said disposable cassette is installed onto said main unit;
first optical signal source means for providing a first light beam, said first optical signal source means being located in said optical receiving module on one side of said opening;
second optical signal source means for providing a second light beam, said second optical signal source means also being located in said optical receiving module on said one side of said opening;
first optical signal sensor means for receiving said first light beam, said first optical signal means being located in said optical receiving module on the other side of said opening opposite said first optical signal source means;
second optical signal sensor means for receiving said second light beam, said second optical signal sensor means also being located in said optical receiving module on the other side of said opening opposite said second optical signal source means;
first identification means for controlling the passage of said first light beam through said projection on said disposable cassette from said first optical signal source means to said first optical signal sensor means, said first identification means alternatively being either conductive of light to allow the passage of light therethrough, or nonconductive of light to prevent the passage of light therethrough, said first identification means being located on said projection on said disposable cassette; and
second identification means for controlling the passage of said second light beam through said projection on said disposable cassette from said second optical signal source means to said second optical signal sensor means, said second identification means alternatively being either conductive of light to allow the passage of light therethrough, or nonconductive of light to prevent the passage of light therethrough, said second identification means being located on said projection on said disposable cassette.
16 Assignments
0 Petitions
Accused Products
Abstract
A cassette identification system for use with a medication infusion system having disposable cassettes which are mounted onto a main pump unit is disclosed which uses an optical sensor module to read the identifying bits from the cassette. The identification indicia contained on the cassette each either pass light through a portion of the cassette, or diffuse the light to prevent it from passing through the cassette. The optical module is mounted on the main pump unit, and includes light sources and sensors for each of the identification indicia on the cassette; the system may use either redundant or non-redundant coding for identifying the cassettes.
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Citations
16 Claims
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1. A system for providing information identifying which of a series of disposable cassettes is installed on a main unit in a medication infusion system, comprising:
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a projection located on said disposable cassette; an optical receiving module mounted on said main unit, said optical receiving unit defining an opening therein for receiving said projection on said disposable cassette when said disposable cassette is installed onto said main unit; first optical signal source means for providing a first light beam, said first optical signal source means being located in said optical receiving module on one side of said opening; second optical signal source means for providing a second light beam, said second optical signal source means also being located in said optical receiving module on said one side of said opening; first optical signal sensor means for receiving said first light beam, said first optical signal means being located in said optical receiving module on the other side of said opening opposite said first optical signal source means; second optical signal sensor means for receiving said second light beam, said second optical signal sensor means also being located in said optical receiving module on the other side of said opening opposite said second optical signal source means; first identification means for controlling the passage of said first light beam through said projection on said disposable cassette from said first optical signal source means to said first optical signal sensor means, said first identification means alternatively being either conductive of light to allow the passage of light therethrough, or nonconductive of light to prevent the passage of light therethrough, said first identification means being located on said projection on said disposable cassette; and second identification means for controlling the passage of said second light beam through said projection on said disposable cassette from said second optical signal source means to said second optical signal sensor means, said second identification means alternatively being either conductive of light to allow the passage of light therethrough, or nonconductive of light to prevent the passage of light therethrough, said second identification means being located on said projection on said disposable cassette. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system for providing information identifying which of a series of disposable cassettes is installed on a main unit in a medication infusion system, comprising:
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a projection located on said disposable cassette, said projection having a first width, an optical receiving module mounted on said main unit, said optical receiving unit defining an opening therein for receiving said projection on said disposable cassette when said disposable cassette is installed onto said main unit, said opening having a second width which second width is greater than said first width; means for aligning said projection on said disposable cassette with said opening in said optical receiving module to maintain a particular position of said projection on said disposable cassette with respect to said opening in said optical receiving module when said disposable cassette is installed onto said main unit; first optical signal source means for providing a first light beam, said first optical signal source means being located in said optical receiving module on one side of said opening; second optical signal source means for providing a second light beam, said second optical signal source means also being located in said optical receiving module on said one side of said opening; first optical signal sensor means for receiving said first light beam, said first optical signal sensor means being located in said optical receiving module on the other side of said opening opposite said first optical signal source means, said first optical signal sensor outputting a first signal when said first light beam is received by said first optical sensor means; second optical signal sensor means for receiving said second light beam, said second optical signal sensor means also being located in said optical receiving module on the other side of said opening opposite said second optical signal source means, said second optical signal sensor outputting a second signal when said second light beam is received by said second optical signal sensor means; first identification means for controlling the passage of said first light beam through said projection on said disposable cassette from said first optical signal source means to said first optical signal sensor means, said first identification means alternatively being either conductive of light to allow the passage of light therethrough, or nonconductive of light to prevent the passage of light therethrough, said first identification means being located on said projection on said disposable cassette, said first identification means being aligned intermediate said first optical signal source means and said first optical signal sensor means in said optical receiving module when said disposable cassette is installed onto said main unit, said first identification means either allowing said first light beam to pass therethrough from said first optical signal source means to said first optical signal sensor means causing said first signal to be output by said first optical signal sensor means, or preventing said first light beam from passing therethrough from said first optical signal source means to said first optical signal sensor means causing said second signal to be output by said first optical signal sensor means; and second identification mean for controlling the passage of said second light beam through said projection on said disposable cassette from said second optical signal source means to said second optical signal sensor means, said second identification means alternatively being either conductive of light to allow the passage of light therethrough, or nonconductive of light to prevent the passage of light therethrough, said second identification means being located on said projection on said disposable cassette, said second identification means being aligned intermediate said second optical signal source means and said second optical signal sensor means in said optical receiving module when said disposable cassette is installed onto said main unit, said second identification means either allowing said second light beam to pass therethrough from said second optical signal source means to said optical signal sensor means causing said first signal to be output by said second optical signal sensor means, or preventing said second light beam from passing therethrough from said second optical signal source means to said second optical signal sensor means causing said second signal to be output by said second optical signal sensor means.
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16. A method for providing information identifying which of a series of disposable cassettes is installed on a main unit in a medication infusion system comprising:
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mounting an optical receiving module on said main unit, said optical receiving unit defining an opening therein; providing a first light beam from a first optical signal source means located in said optical receiving module on one side of said opening; providing a second light beam from a second optical signal source means also located in said optical receiving module on said one side of said opening; receiving said first light beam with a first optical signal sensor means located in said optical receiving module on the other side of said opening opposite said first optical signal source means; receiving said second light beam with a second optical signal sensor means also located in said optical receiving module on the other side of said opening opposite said second optical signal source means; installing said disposable cassette onto said main pump unit, said disposable cassette having a projection located thereon which is received on said opening on said optical receiving module when said disposable cassette is installed onto said main unit; controlling the passage of said first light beam through said projection on said diagnostic cassette from said first optical signal source means to said first optical signal sensor means with a first identification means located on said projection on said disposable cassette, said first identification means alternatively being either conductive of light to allow the passage of light therethrough, or nonconductive of light to prevent the passage of light therethrough; and controlling the passage of said second light beam through said projection on said disposable cassette from said second optical signal source means to said second optical signal sensor means with a second identification means located on said projection on said disposable cassette, said second identification means alternatively being either conductive of light to allow the passage of light therethrough, or nonconductive of light to prevent the passage of light therethrough.
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Specification