WO1995006430B1 - Analog heater control for medical instrument - Google Patents
Analog heater control for medical instrumentInfo
- Publication number
- WO1995006430B1 WO1995006430B1 PCT/US1994/009428 US9409428W WO9506430B1 WO 1995006430 B1 WO1995006430 B1 WO 1995006430B1 US 9409428 W US9409428 W US 9409428W WO 9506430 B1 WO9506430 B1 WO 9506430B1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- control
- temperature
- heater
- monitoring
- coupling
- Prior art date
Links
- 230000015271 coagulation Effects 0.000 claims abstract 2
- 238000005345 coagulation Methods 0.000 claims abstract 2
- 230000001808 coupling Effects 0.000 claims 10
- 238000010168 coupling process Methods 0.000 claims 10
- 238000005859 coupling reaction Methods 0.000 claims 10
- 239000012530 fluid Substances 0.000 claims 4
- 238000006243 chemical reaction Methods 0.000 claims 3
- 239000000376 reactant Substances 0.000 claims 2
- 210000004369 Blood Anatomy 0.000 abstract 4
- 239000008280 blood Substances 0.000 abstract 4
Abstract
An instrument (100) for determining a coagulation characteristic of blood, a blood fraction or a control (514) includes a heater (182, 192) and a heater control (322). The heater comprises a heater element (182) supported (192) in heat conducting relationship to the blood, blood fraction or control (514) when the instrument (100) is in use. The temperature of the heater element support (192) is monitored (188). The heater control (322) comprises a first temperature setpoint control (428) and a second temperature setpoint control (SETPoinT 2). The heater control (322) is coupled to the heater element support monitor (188), and the heater element (182) is coupled to the heater control (322) to be controlled thereby.
Claims
1. A combination heater and heater control for an instrument for monitoring a reaction which occurs when the reactants are heated, the heater comprising an electrically resistive pattern, means for supporting the pattern in heat conducting relationship to the reactants when the instrument is in use, means for monitoring the temperature of the support means, means for mounting the means for monitoring the temperature of the support means adjacent the support means, means for coupling the monitoring means to the heater control, and means for coupling the pattern to the control.
2. The system of claim 1 in an instrument for determining a characteristic of a biological fluid or a control, the instrument comprising a first temperature setpoint control and a second temperature setpoint control.
3. The system of claim 2 wherein the instrument comprises a controller and the second temperature setpoint control comprises an output terminal of the controller for providing a signal that the support means is to be heated from ambient temperature for determining the coagulation characteristic.
4. The system of claim 3 wherein the heater control, the monitoring means and the means for coupling the monitoring means to the heater control together comprise a differential amplifier and a bridge circuit having first, second, third and fourth bridge legs, the differential amplifier including an inverting input terminal and a non-inverting input terminal, means for coupling the inverting input terminal and the first and second legs of the bridge together, and means for coupling the non-inverting input terminal and the third and fourth legs of the bridge together, the second leg of the bridge including the first temperature setpoint control and the fourth leg of the bridge including the means for monitoring the temperature of the support means.
5. The system of claim 4 wherein the means for monitoring the temperature of the support means comprises a temperature sensitive element.
6. The system of claim 4 wherein the first temperature setpoint control comprises a potentiometer for setting the temperature at which the support means is to be maintained during the reaction.
7. In an instrument for determining a characteristic of a biological fluid or a control, the combination of a heater and a heater control, the heater comprising a heater element, means for supporting the heater element in heat conducting relationship to the biological fluid or control when the instrument is in use, means for monitoring the temperature of the support means, means for mounting the means for monitoring the temperature of the support means adjacent the support means, the heater control comprising a first temperature setpoint control and a second temperature setpoint control, means for coupling the monitoring means to the heater control, and means for coupling the heater element to the heater control.
8. The system of claim 7 wherein the instrument comprises a controller and the second temperature setpoint control comprises an output terminal of the controller for providing a signal that the support means is to be heated from ambient temperature for determining the characteristic of the biological fluid or control.
9. The system of claim 8 wherein the heater control, the monitoring means and the means for coupling the monitoring means to the heater control together comprise a differential amplifier and a bridge circuit having first, second, third and fourth bridge legs, the differential amplifier including an inverting input terminal and a non-inverting input terminal, means for coupling the inverting input terminal and the first and second legs of the bridge together, and means for coupling the non-inverting input terminal and the third and fourth legs of the bridge together, the second leg of the bridge including the first temperature setpoint control and the fourth leg of the bridge including the means for monitoring the temperature of the support means.
10. The system of claim 9 wherein the means for monitoring the temperature of the support means comprises a temperature sensitive element.
11. The system of claim 9 wherein the first temperature setpoint control comprises a potentiometer for setting the temperature at which the support means is to be maintained during the reaction.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE69430926T DE69430926T2 (en) | 1993-08-31 | 1994-08-18 | ANALOG HEATING CONTROL FOR A MEDICAL INSTRUMENT |
| CA002168966A CA2168966C (en) | 1993-08-31 | 1994-08-18 | Analog heater control for medical instrument |
| JP7508157A JPH09502268A (en) | 1993-08-31 | 1994-08-18 | Analog heater controller for medical device |
| EP94927199A EP0775311B1 (en) | 1993-08-31 | 1994-08-18 | Analog heater control for medical instrument |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US11491593A | 1993-08-31 | 1993-08-31 | |
| US08/114,915 | 1993-08-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO1995006430A1 WO1995006430A1 (en) | 1995-03-09 |
| WO1995006430B1 true WO1995006430B1 (en) | 1995-03-23 |
Family
ID=22358209
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/US1994/009428 WO1995006430A1 (en) | 1993-08-31 | 1994-08-18 | Analog heater control for medical instrument |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5832921A (en) |
| EP (1) | EP0775311B1 (en) |
| JP (1) | JPH09502268A (en) |
| CA (1) | CA2168966C (en) |
| DE (1) | DE69430926T2 (en) |
| ES (1) | ES2180588T3 (en) |
| WO (1) | WO1995006430A1 (en) |
Families Citing this family (26)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6466808B1 (en) * | 1999-11-22 | 2002-10-15 | Mallinckrodt Inc. | Single device for both heating and temperature measurement in an oximeter sensor |
| US8071384B2 (en) | 1997-12-22 | 2011-12-06 | Roche Diagnostics Operations, Inc. | Control and calibration solutions and methods for their use |
| US7208119B1 (en) * | 2000-03-01 | 2007-04-24 | Roche Diagnostics Operations, Inc. | Hospital meter system |
| WO2001011356A2 (en) * | 1999-08-06 | 2001-02-15 | Roche Diagnostics Corporation | Methods and apparatus for determining coagulation times |
| US6588253B2 (en) * | 2001-08-17 | 2003-07-08 | Delphi Technologies, Inc. | Fuel volatitlity sensor and method based on capacitance measurement |
| US7018843B2 (en) | 2001-11-07 | 2006-03-28 | Roche Diagnostics Operations, Inc. | Instrument |
| US7488601B2 (en) | 2003-06-20 | 2009-02-10 | Roche Diagnostic Operations, Inc. | System and method for determining an abused sensor during analyte measurement |
| US8148164B2 (en) | 2003-06-20 | 2012-04-03 | Roche Diagnostics Operations, Inc. | System and method for determining the concentration of an analyte in a sample fluid |
| US7452457B2 (en) | 2003-06-20 | 2008-11-18 | Roche Diagnostics Operations, Inc. | System and method for analyte measurement using dose sufficiency electrodes |
| US8206565B2 (en) | 2003-06-20 | 2012-06-26 | Roche Diagnostics Operation, Inc. | System and method for coding information on a biosensor test strip |
| US7645421B2 (en) | 2003-06-20 | 2010-01-12 | Roche Diagnostics Operations, Inc. | System and method for coding information on a biosensor test strip |
| US7718439B2 (en) | 2003-06-20 | 2010-05-18 | Roche Diagnostics Operations, Inc. | System and method for coding information on a biosensor test strip |
| US7645373B2 (en) | 2003-06-20 | 2010-01-12 | Roche Diagnostic Operations, Inc. | System and method for coding information on a biosensor test strip |
| US8058077B2 (en) | 2003-06-20 | 2011-11-15 | Roche Diagnostics Operations, Inc. | Method for coding information on a biosensor test strip |
| US7047056B2 (en) | 2003-06-25 | 2006-05-16 | Nellcor Puritan Bennett Incorporated | Hat-based oximeter sensor |
| EP1713926B1 (en) | 2004-02-06 | 2012-08-01 | Bayer HealthCare, LLC | Oxidizable species as an internal reference for biosensors and method of use |
| US7569126B2 (en) | 2004-06-18 | 2009-08-04 | Roche Diagnostics Operations, Inc. | System and method for quality assurance of a biosensor test strip |
| GB0509919D0 (en) * | 2005-05-16 | 2005-06-22 | Ralph Ellerker 1795 Ltd | Improvements to door closure system |
| KR101503072B1 (en) | 2005-07-20 | 2015-03-16 | 바이엘 헬스케어 엘엘씨 | Gated amperometry |
| KR20130100022A (en) | 2005-09-30 | 2013-09-06 | 바이엘 헬스케어 엘엘씨 | Gated voltammetry analyte determination |
| WO2009076302A1 (en) | 2007-12-10 | 2009-06-18 | Bayer Healthcare Llc | Control markers for auto-detection of control solution and methods of use |
| ES2390987T3 (en) * | 2008-12-18 | 2012-11-20 | F. Hoffmann-La Roche Ag | Method for checking the thermal coupling quality of a measuring cell |
| US9518905B2 (en) | 2012-01-16 | 2016-12-13 | Abram Scientific, Inc. | Methods, devices, and systems for measuring physical properties of fluid |
| USD750802S1 (en) * | 2014-01-13 | 2016-03-01 | Gilson, Inc. | Liquid handling platform |
| CN109682959A (en) * | 2019-03-01 | 2019-04-26 | 南京岚煜生物科技有限公司 | Multi objective blood coagulation item detecting system |
| SG11202108580YA (en) * | 2019-03-01 | 2021-09-29 | Lansion Biotechnology Co Ltd | Detection system for multi-index coagulation items |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| USRE28009E (en) * | 1966-10-03 | 1974-05-14 | Method for measuring the coagulation time of organic substances (and albuminoid | |
| US4058254A (en) * | 1968-01-26 | 1977-11-15 | Danfoss A/S | Temperature-monitoring and control system |
| US3593568A (en) * | 1969-04-01 | 1971-07-20 | Bio Dynamics Inc | Prothrombin time measuring apparatus with means to start the timer in response to the initial decrement of optical transmissivity |
| US3967934A (en) * | 1969-06-13 | 1976-07-06 | Baxter Laboratories, Inc. | Prothrombin timer |
| BE759811A (en) * | 1969-12-04 | 1971-06-03 | Technicon Instr | APPARATUS FOR AUTOMATIC DETERMINATION OF THE SPEEDS OF COAGULATION, AGGLUTINATION OR FLOCCULATION OF LIQUIDS, AND REACTION ENHANCING AGENT USED WITH THIS APPARATUS |
| US3695842A (en) * | 1970-03-12 | 1972-10-03 | Intern Technidyne Corp | Method and system for analyzing a liquid |
| US3754866A (en) * | 1971-07-30 | 1973-08-28 | Sherwood Medical Ind Inc | Optical detecting system |
| US3821643A (en) * | 1973-05-29 | 1974-06-28 | Research Corp | Blood coagulation timer |
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| SU1157456A1 (en) * | 1981-07-21 | 1985-05-23 | Научно-производственное объединение "Квант" | Method of investigating process of blood coagulation |
| US4599219A (en) * | 1982-10-15 | 1986-07-08 | Hemotec, Inc. | Coagulation detection by plunger sensing technique |
| JPS60152943A (en) * | 1984-01-20 | 1985-08-12 | Snow Brand Milk Prod Co Ltd | Measurement of change in physical properties of liquid and semi-solid substance |
| US4639611A (en) * | 1985-01-09 | 1987-01-27 | Nordson Corporation | Bridge circuit system |
| US4849340A (en) * | 1987-04-03 | 1989-07-18 | Cardiovascular Diagnostics, Inc. | Reaction system element and method for performing prothrombin time assay |
| US5110727A (en) * | 1987-04-03 | 1992-05-05 | Cardiovascular Diagnostics, Inc. | Method for performing coagulation assays accurately, rapidly and simply, using dry chemical reagents and paramagnetic particles |
| EP0332110B1 (en) * | 1988-03-07 | 1996-03-06 | Snow Brand Milk Products Co., Ltd. | Method for measurement of viscosity change in blood or blood plasma and sensor therefor |
| US5053199A (en) * | 1989-02-21 | 1991-10-01 | Boehringer Mannheim Corporation | Electronically readable information carrier |
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| US5167145B1 (en) * | 1990-09-19 | 2000-05-23 | David M Butler | Measurement of blood coagulation time using infrared electromagnetic energy |
-
1994
- 1994-08-18 WO PCT/US1994/009428 patent/WO1995006430A1/en active IP Right Grant
- 1994-08-18 EP EP94927199A patent/EP0775311B1/en not_active Expired - Lifetime
- 1994-08-18 ES ES94927199T patent/ES2180588T3/en not_active Expired - Lifetime
- 1994-08-18 JP JP7508157A patent/JPH09502268A/en not_active Ceased
- 1994-08-18 DE DE69430926T patent/DE69430926T2/en not_active Expired - Lifetime
- 1994-08-18 CA CA002168966A patent/CA2168966C/en not_active Expired - Fee Related
-
1995
- 1995-11-07 US US08/554,755 patent/US5832921A/en not_active Expired - Fee Related
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