CA2495538A1 - Pressure sensing in surgical console - Google Patents

Pressure sensing in surgical console Download PDF

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Publication number
CA2495538A1
CA2495538A1 CA002495538A CA2495538A CA2495538A1 CA 2495538 A1 CA2495538 A1 CA 2495538A1 CA 002495538 A CA002495538 A CA 002495538A CA 2495538 A CA2495538 A CA 2495538A CA 2495538 A1 CA2495538 A1 CA 2495538A1
Authority
CA
Canada
Prior art keywords
plunger
force
surgical console
compliant member
measuring
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002495538A
Other languages
French (fr)
Other versions
CA2495538C (en
Inventor
Michael D. Morgan
Gary P. Sorensen
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Alcon Inc
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2495538A1 publication Critical patent/CA2495538A1/en
Application granted granted Critical
Publication of CA2495538C publication Critical patent/CA2495538C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A61M1/74—Suction control
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M1/00—Suction or pumping devices for medical purposes; Devices for carrying-off, for treatment of, or for carrying-over, body-liquids; Drainage systems
    • A61M1/71—Suction drainage systems
    • A61M1/73—Suction drainage systems comprising sensors or indicators for physical values
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
    • G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
    • G01L27/002—Calibrating, i.e. establishing true relation between transducer output value and value to be measured, zeroing, linearising or span error determination
    • G01L27/005—Apparatus for calibrating pressure sensors
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/33—Controlling, regulating or measuring
    • A61M2205/3331—Pressure; Flow
    • A61M2205/3351—Controlling upstream pump pressure
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/50—General characteristics of the apparatus with microprocessors or computers
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61M—DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY; DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY; DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR
    • A61M2205/00—General characteristics of the apparatus
    • A61M2205/70—General characteristics of the apparatus with testing or calibration facilities

Abstract

A method of determining the accuracy of a pressure sensor (56) in a surgical console (12) is disclosed. The method involves actuating a linear actuator (18) so that its plunger (26) is linearly displaced a pre-defined amount, an d measuring the force exerted by the plunger (26) on a non-compliant member. T he accuracy of the linear actuator (18) and the plunger are determined by comparing the force measured in the measuring step to a pre-defined force.</ SDOAB>

Claims (8)

1. A method of determining the accuracy of a pressure sensor in a surgical console, comprising the steps of:
providing a substantially non-compliant member;
providing a surgical console with a cassette receiving area and a linear actuator having a plunger;
disposing said substantially con-compliant member in said cassette receiving area;
actuating said linear actuator so that said plunger is linearly displaced a pre-defined amount;
measuring said force exerted by said plunger on said non-compliant member; and determining an accuracy of said linear actuator and said plunger by comparing said force measured in said measuring step to a pre-defined force.
2. The method of claim 1 further comprising the step of providing information to a user of said surgical console when said force measured in said measuring step is not within a pre-defined tolerance of said pre-defined force.
3. The method of claim 1 further comprising the step of preventing a surgical procedure when said force measured in said measuring step is not within a pre-defined tolerance of said pre-defined force.
4. The method of claim 1 wherein:
said surgical console comprises a load cell operatively coupled to said plunger;
and said measuring step comprises measuring said force exerted by said plunger on said non-compliant member with said load cell.
5. A method of determining the accuracy of a pressure sensor in a surgical console, comprising the steps of:

providing a surgical cassette having a pressure sensor receiving area and a substantially non-compliant member disposed in said pressure sensor receiving area;
providing a surgical console with a cassette receiving area and a linear stepper motor having a plunger;
disposing said cassette in said cassette receiving area;
actuating said linear stepper motor a pre-defined number of steps so that said plunger exerts a force on said non-compliant member;
measuring said force exerted by said plunger on said non-compliant member;
determining an accuracy of said linear stepper motor and said plunger by comparing said force measured in said measuring step to a pre-defined force.
6. The method of claim 5 further comprising the step of providing information to a user of said surgical console when said force measured in said measuring step is not within a pre-defined tolerance of said pre-defined force.
7. The method of claim 5 further comprising the step of preventing a surgical procedure when said force measured in said measuring step is not within a pre-defined tolerance of said pre-defined force.
8. The method of claim 5 wherein:
said surgical console comprises a load cell operatively coupled to said plunger;
and said measuring step comprises measuring said force exerted by said plunger on said non-compliant member with said load cell.
CA2495538A 2002-10-16 2003-08-21 Pressure sensing in surgical console Expired - Lifetime CA2495538C (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US41873702P 2002-10-16 2002-10-16
US60/418,737 2002-10-16
US10/375,959 US6955073B2 (en) 2002-10-16 2003-02-28 Pressure sensing in surgical console
US10/375,959 2003-02-28
PCT/US2003/026157 WO2004035112A2 (en) 2002-10-16 2003-08-21 Pressure sensing in surgical console

Publications (2)

Publication Number Publication Date
CA2495538A1 true CA2495538A1 (en) 2004-04-29
CA2495538C CA2495538C (en) 2010-12-14

Family

ID=32095830

Family Applications (1)

Application Number Title Priority Date Filing Date
CA2495538A Expired - Lifetime CA2495538C (en) 2002-10-16 2003-08-21 Pressure sensing in surgical console

Country Status (11)

Country Link
US (1) US6955073B2 (en)
EP (1) EP1556099B1 (en)
JP (1) JP4343903B2 (en)
AR (1) AR041513A1 (en)
AU (1) AU2003258312B2 (en)
BR (1) BR0314296A (en)
CA (1) CA2495538C (en)
ES (1) ES2428627T3 (en)
IL (1) IL167249A (en)
MX (1) MXPA05001905A (en)
WO (1) WO2004035112A2 (en)

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Also Published As

Publication number Publication date
EP1556099A2 (en) 2005-07-27
US20040074282A1 (en) 2004-04-22
CA2495538C (en) 2010-12-14
AU2003258312A1 (en) 2004-05-04
BR0314296A (en) 2005-07-26
ES2428627T3 (en) 2013-11-08
WO2004035112A3 (en) 2004-07-01
AR041513A1 (en) 2005-05-18
JP2006502833A (en) 2006-01-26
JP4343903B2 (en) 2009-10-14
IL167249A (en) 2011-03-31
WO2004035112A2 (en) 2004-04-29
EP1556099B1 (en) 2013-07-24
AU2003258312B2 (en) 2009-01-08
MXPA05001905A (en) 2005-04-28
US6955073B2 (en) 2005-10-18

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EEER Examination request
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Effective date: 20230821