Patent US3214069A successfully refreshed from Google Patents.
EP0449525A1
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EP
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Medical diagnostic system
Assignee: Cascade Medical Inc
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Filing: 1991-03-22
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Granted: —
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Expires: 2011-03-22
Abstract
Abstract Hand-held shirt-pocket portable instrument (10) for quantitative measurement of glucose or analysis in biological fluids. The system (10) accepts a disposable diagnostic reagent test device (12) which has a reagent carrier and a mode of identifying to the instrument the characteristics of the chemical reagent used. The instrument includes a housing structure having a visual LCD readout (24), a microprocessor (249), and photosensing circuitry (207) which measures the change of color of the reagent carrier upon reaction of the reagent in the disposable test device (12). The housing also includes a spring arrangement (132,134) for actuating a disposable lancet (14) into the skin for generating blood. The disposable diagnostic reagent unit (12) includes a configuration for transporting the blood into the reagent unit (12). The system includes verification and calibration sequences for the electronics, the chemical reagent of an unused disposable unit, the presence of a blood sample, and the ambient temperature. The system also provides for storing a plurality of analysis readings.
Inventors
- 👤 Paul J. Anderson
- 👤 Ross A. Jessen
- 👤 David R. Linde
- 👤 Richard E. Jones
- 👤 Bert Walter
- 👤 Paul E. Christenson
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-10-23 14:23
CPC Classifications
C; C12; C12Q; C12Q1/00; C12Q1/54; A; A61; A61B; A61B5/00; A61B5/145; A61B5/14532; A61B5/1455; A61B5/15; A61B5/150007; A61B5/150015; A61B5/150022; A61B5/150358; A61B5/150374; A61B5/150381; A61B5/150412; A61B5/150435; A61B5/150534; A61B5/150664; A61B5/151; A61B5/15101; A61B5/15103; A61B5/15107; A61B5/15113; A61B5/15115; A61B5/15117; A61B5/15186; A61B5/15188; A61B5/1519; A61B5/15192; A61B5/15194; A61B5/157; G; G01; G01N; G01N33/00; G01N33/48; G01N33/50; G01N33/52; A61B2560/00; A61B2560/02; A61B2560/0242; A61B2560/0247; A61B2560/0252; A61B2562/00; A61B2562/02; A61B2562/0295
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
157 words
A system for extraction and analysis of a component of a liquid, said system receiving a disposable diagnostic reagent unit which exhibits a color change on sensing a predetermined component in the liquid, said system comprising: a. optical measurement means including a light source and light sensor for measuring light emanating from said source and reflected by reagent chemistry in said unit and having an optical characteristic proportional to the component of the liquid to be measured after transporting when liquid to said reagent; b. said optical measurement means generating an electrical signal responsive to a change of said reagent chemistry and therefore also to the component to be measured; c. microprocessor means processing said generated electrical signal; d. display means responsive to said processed signal providing a visual readout representative of the analysis on said display means in said housing member; and e. means for removably receiving a disposable diagnostic reagent unit including said reagent chemistry.
Claim 2
Dependent Claim
51 words
A system according to Claim 1, wherein the liquid is blood and said unit exhibits a color change on sensing a pre-determined condition and wherein the system has a housing member including a spring actuated hammer means in said housing member and a disposable lancet removably positioned on said hammer means.
Claim 3
Dependent Claim
15 words
A system according to Claim 1 or 2, which includes said disposable diagnostic reagent unit.
Claim 4
Independent Claim
106 words
A system for operative connection to a test device which device tests a liquid for the presence therein of an analyte, the system comprising: an optical measurement means including a light source and a light sensor for measuring light emanating from said source and light received from the test device and having an optical characteristic related to the presence of, or the quantity of, the analyte; generating means to generate an electrical signal responsive to said optical characteristic; microprocessor means to process said generated electrical signal; display means responsive to said processed signal and providing a visual display; and means for removably receiving the test device.
Claim 5
Dependent Claim
11 words
A system according to Claim 4, which includes said test device.
Claim 6
Dependent Claim
302 words
Hand-held pocketable medical monitoring diagnostic system for extraction and analysis of a component of blood in a body, said system comprising: a. pocketable housing member including a spring actuated hammer means in said housing member and a disposable lancet removably positioned on said hammer means; b. optical measurement means including a light source and light sensor for measuring light emanating from said source and reflected by blood reagent chemistry having a color optical characteristic proportional to the component of the liquid to be measured when in contact with the liquid; c. said optical measurement means generating an electrical signal responsive to a color change of said blood reagent chemistry and therefore also to the component to be measured; d. microprocessor means processing said generated electrical signal; e. display means responsive to said electrical signal to provide a visual readout representative of the analysis on said display means in said housing member; f. means for removably receiving a disposable diagnostic reagent unit; and, g. disposable diagnostic reagent unit for operative engagement in said receiving means of said glucose medical monitoring diagnostic system, said unit including housing, means for operatively connecting said unit to said receiving means of said system, said blood reagent chemistry supported within said housing, at least one opening in said housing for providing an opening for a puncturing means to pass through and providing for a liquid substance to be transported to said blood reagent chemistry, means for transporting said liquid substance to said blood reagent chemistry, and aperture means through said housing for reading a portion of said blood reagent chemistry whereby said blood reagent chemistry yields a responsive optical characteristic which is read by said optical measurement means, processed by said microprocessor means, and displayed by said display means thereby yielding a numerical value of a diagnostic condition.
Claim 7
Dependent Claim
20 words
A system according to Claim 6, wherein said opening provides for transfer of a liquid substance to said reagent means.
Claim 8
Dependent Claim
24 words
A system according to Claim 6 or 7, which includes calibration means supported in an aperture next to said reagent means in said housing.
Claim 9
Dependent Claim
17 words
A system according to Claim 6, 7 or 8, wherein said transporting means is a wicking material.
Claim 10
Independent Claim
29 words
A system according to any of Claims 6 to 9, which includes a calibration sensor for sending visual calibration color at predetermined times as sequenced by said microprocessor means.
Claim 11
Dependent Claim
32 words
A system according to Claim 6, which includes cocking means connected to said hammer means, and said microprocessor means includes means for processing a plurality of steps on cocking said hammer means.
Claim 12
Dependent Claim
25 words
A system according to Claim 6, which includes means in said microprocessor to verify lot-to-lot (LOT/LOT ) reagent specific calibration codes of said calibration means.
Claim 13
Dependent Claim
77 words
A process for measuring a component quality comprising the steps of: a. sliding a disposable diagnostic unit into a hand-held pocketable medical system; b. engaging the medical system including said unit against an individual's skin; c. puncturing the skin with a needle spring-biased in said unit; d. transporting blood from outside the individual's skin for qualitative analysis by blood reagent chemistry carried by said unit; and e. reading the qualitative results on a display of said system.
Claim 14
Dependent Claim
17 words
A process according to Claim 13, which includes calibrating said system prior to sensing a qualitative result.
Claim 15
Dependent Claim
16 words
A process according to Claim 13, which includes the step of reading the previous qualitative results.
References Cited (Backward Citations)
US4787398A
Cited
EP0254203A2
Cited
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