WO2005115539A3 - Sensorless flow estimation for implanted ventricle assist device - Google Patents

Sensorless flow estimation for implanted ventricle assist device Download PDF

Info

Publication number
WO2005115539A3
WO2005115539A3 PCT/US2005/018333 US2005018333W WO2005115539A3 WO 2005115539 A3 WO2005115539 A3 WO 2005115539A3 US 2005018333 W US2005018333 W US 2005018333W WO 2005115539 A3 WO2005115539 A3 WO 2005115539A3
Authority
WO
WIPO (PCT)
Prior art keywords
assist device
implanted
ventricle assist
flow estimation
blood
Prior art date
Application number
PCT/US2005/018333
Other languages
French (fr)
Other versions
WO2005115539A2 (en
Inventor
Jeffrey A Larose
Udai Singh
Original Assignee
Heartware Inc
Jeffrey A Larose
Udai Singh
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 Heartware Inc, Jeffrey A Larose, Udai Singh filed Critical Heartware Inc
Priority to AU2005247478A priority Critical patent/AU2005247478B2/en
Priority to US11/597,230 priority patent/US7887479B2/en
Priority to EP05755086.5A priority patent/EP1761306B1/en
Publication of WO2005115539A2 publication Critical patent/WO2005115539A2/en
Publication of WO2005115539A3 publication Critical patent/WO2005115539A3/en
Priority to US13/027,811 priority patent/US8506470B2/en
Priority to US13/939,964 priority patent/US8961390B2/en

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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
    • A61M60/126—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel
    • A61M60/148—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable via, into, inside, in line, branching on, or around a blood vessel in line with a blood vessel using resection or like techniques, e.g. permanent endovascular heart assist devices
    • 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/104—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body
    • A61M60/117—Extracorporeal pumps, i.e. the blood being pumped outside the patient's body for assisting the heart, e.g. transcutaneous or external ventricular assist devices
    • 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/10—Location thereof with respect to the patient's body
    • A61M60/122—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body
    • A61M60/165—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart
    • A61M60/178—Implantable pumps or pumping devices, i.e. the blood being pumped inside the patient's body implantable in, on, or around the heart drawing blood from a ventricle and returning the blood to the arterial system via a cannula external to the ventricle, e.g. left or right ventricular assist devices
    • 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/20—Type thereof
    • A61M60/205—Non-positive displacement blood pumps
    • A61M60/216—Non-positive displacement blood pumps including a rotating member acting on the blood, e.g. impeller
    • 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/40—Details relating to driving
    • A61M60/403—Details relating to driving for non-positive displacement blood pumps
    • A61M60/408—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable
    • A61M60/411—Details relating to driving for non-positive displacement blood pumps the force acting on the blood contacting member being mechanical, e.g. transmitted by a shaft or cable generated by an electromotor
    • 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/50—Details relating to control
    • A61M60/508—Electronic control means, e.g. for feedback regulation
    • A61M60/515—Regulation using real-time patient data
    • A61M60/523—Regulation using real-time patient data using blood flow data, e.g. from blood flow transducers
    • 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
    • A61M60/00—Blood pumps; Devices for mechanical circulatory actuation; Balloon pumps for circulatory assistance
    • A61M60/80—Constructional details other than related to driving
    • A61M60/802—Constructional details other than related to driving of non-positive displacement blood pumps
    • A61M60/818—Bearings
    • A61M60/825—Contact bearings, e.g. ball-and-cup or pivot bearings
    • 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
    • A61M2205/3334—Measuring or controlling the flow rate
    • 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
    • A61M2205/3379—Masses, volumes, levels of fluids in reservoirs, flow rates

Abstract

A method of estimating the blood flow rate of a heart ventricle assist device which is positioned externally of, or implanted in, a patient. The assist device comprises a blood pump having a rapidly rotating, electrically powered impeller, and comprises briefly interrupting power to the impeller to cause its rotation to slow. From this, blood viscosity can be estimated, which viscosity is used to obtain real time, estimated blood flow rates and pressure heads. Apparatus for accomplishing this is disclosed.
PCT/US2005/018333 2004-05-25 2005-05-24 Sensorless flow estimation for implanted ventricle assist device WO2005115539A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2005247478A AU2005247478B2 (en) 2004-05-25 2005-05-24 Sensorless flow estimation for implanted ventricle assist device
US11/597,230 US7887479B2 (en) 2004-05-25 2005-05-24 Sensorless flow estimation for implanted ventricle assist device
EP05755086.5A EP1761306B1 (en) 2004-05-25 2005-05-24 Sensorless flow estimation for implanted ventricle assist device
US13/027,811 US8506470B2 (en) 2004-05-25 2011-02-15 Sensorless flow estimation for implanted ventricle assist device
US13/939,964 US8961390B2 (en) 2004-05-25 2013-07-11 Sensorless flow estimation for implanted ventricle assist device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/853,302 US7591777B2 (en) 2004-05-25 2004-05-25 Sensorless flow estimation for implanted ventricle assist device
US10/853,302 2004-05-25

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US10/853,302 Continuation-In-Part US7591777B2 (en) 2004-05-25 2004-05-25 Sensorless flow estimation for implanted ventricle assist device

Related Child Applications (3)

Application Number Title Priority Date Filing Date
US10/597,230 Continuation-In-Part US20080234056A1 (en) 2004-02-02 2005-01-20 Universal Joint System
US11/597,230 A-371-Of-International US7887479B2 (en) 2004-05-25 2005-05-24 Sensorless flow estimation for implanted ventricle assist device
US13/027,811 Continuation US8506470B2 (en) 2004-05-25 2011-02-15 Sensorless flow estimation for implanted ventricle assist device

Publications (2)

Publication Number Publication Date
WO2005115539A2 WO2005115539A2 (en) 2005-12-08
WO2005115539A3 true WO2005115539A3 (en) 2006-06-15

Family

ID=35426280

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2005/018333 WO2005115539A2 (en) 2004-05-25 2005-05-24 Sensorless flow estimation for implanted ventricle assist device

Country Status (4)

Country Link
US (4) US7591777B2 (en)
EP (1) EP1761306B1 (en)
AU (1) AU2005247478B2 (en)
WO (1) WO2005115539A2 (en)

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Also Published As

Publication number Publication date
US20110137108A1 (en) 2011-06-09
US20070232934A1 (en) 2007-10-04
US8506470B2 (en) 2013-08-13
US7591777B2 (en) 2009-09-22
US7887479B2 (en) 2011-02-15
US20050267322A1 (en) 2005-12-01
AU2005247478B2 (en) 2012-01-19
AU2005247478A1 (en) 2005-12-08
US20130296634A1 (en) 2013-11-07
EP1761306A4 (en) 2012-02-15
EP1761306B1 (en) 2015-08-19
WO2005115539A2 (en) 2005-12-08
EP1761306A2 (en) 2007-03-14
US8961390B2 (en) 2015-02-24

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