GB2574535A - Control of a pump driven by shape memory alloy wire - Google Patents

Control of a pump driven by shape memory alloy wire Download PDF

Info

Publication number
GB2574535A
GB2574535A GB1913010.3A GB201913010A GB2574535A GB 2574535 A GB2574535 A GB 2574535A GB 201913010 A GB201913010 A GB 201913010A GB 2574535 A GB2574535 A GB 2574535A
Authority
GB
United Kingdom
Prior art keywords
shape memory
memory alloy
movable element
control
alloy wire
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
GB1913010.3A
Other versions
GB201913010D0 (en
GB2574535B (en
Inventor
Howarth James
charles william richards David
Flouris Andreas
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.)
Cambridge Mechatronics Ltd
Original Assignee
Cambridge Mechatronics Ltd
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 Cambridge Mechatronics Ltd filed Critical Cambridge Mechatronics Ltd
Publication of GB201913010D0 publication Critical patent/GB201913010D0/en
Publication of GB2574535A publication Critical patent/GB2574535A/en
Application granted granted Critical
Publication of GB2574535B publication Critical patent/GB2574535B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/142—Pressure infusion, e.g. using pumps
    • A61M5/145—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons
    • A61M5/1452—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of pistons
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • 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
    • A61M5/00—Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
    • A61M5/14—Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
    • A61M5/168—Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters ; Monitoring media flow to the body
    • A61M5/16831—Monitoring, detecting, signalling or eliminating infusion flow anomalies
    • A61M2005/16863—Occlusion detection
    • 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
    • A61M2205/02—General characteristics of the apparatus characterised by a particular materials
    • A61M2205/0266—Shape memory materials
    • 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
    • A61M2205/332—Force measuring means
    • 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
    • A61M2205/3368—Temperature

Abstract

A pump includes a pumping arrangement comprising a movable element arranged to pump a fluid and shape memory alloy wires coupled to the movable element for moving the movable element. The resistance of at least one of said one or more shape memory alloy wires is measured. A control system supplies drive signals to the shape memory alloy wires and monitors the measured resistance for verifying the operation of the pumping arrangement. The control system detects abnormal operation of the pumping arrangement on the basis of the measured resistance and detects abnormal resistance to movement of the movable element.
GB1913010.3A 2017-02-08 2018-02-07 Control of a pump driven by shape memory alloy wire Active GB2574535B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB1702038.9A GB201702038D0 (en) 2017-02-08 2017-02-08 SMA dose verification
PCT/GB2018/050341 WO2018146467A1 (en) 2017-02-08 2018-02-07 Control of a pump driven by shape memory alloy wire

Publications (3)

Publication Number Publication Date
GB201913010D0 GB201913010D0 (en) 2019-10-23
GB2574535A true GB2574535A (en) 2019-12-11
GB2574535B GB2574535B (en) 2022-11-30

Family

ID=58462266

Family Applications (2)

Application Number Title Priority Date Filing Date
GBGB1702038.9A Ceased GB201702038D0 (en) 2017-02-08 2017-02-08 SMA dose verification
GB1913010.3A Active GB2574535B (en) 2017-02-08 2018-02-07 Control of a pump driven by shape memory alloy wire

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GBGB1702038.9A Ceased GB201702038D0 (en) 2017-02-08 2017-02-08 SMA dose verification

Country Status (2)

Country Link
GB (2) GB201702038D0 (en)
WO (1) WO2018146467A1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2600367A (en) * 2017-05-17 2022-04-27 Cambridge Mechatronics Ltd Shape memory alloy based drug delivery device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111730980B (en) * 2020-06-18 2023-11-07 浙江大学 Novel underwater tracing ink reservoir

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030198558A1 (en) * 2002-04-22 2003-10-23 Nason Clyde K. Shape memory alloy wire driven positive displacement micropump with pulsatile output
US20050238503A1 (en) * 2002-10-09 2005-10-27 Rush Benjamin M Variable volume, shape memory actuated insulin dispensing pump
US20070112326A1 (en) * 2005-11-04 2007-05-17 David Bosshard Device for Automated Delivery of a Liquid Medicament into a Patient's Body
US20090283377A1 (en) * 2008-05-15 2009-11-19 Roe Steven N Drug delivery pump drive using a shaped memory alloy wire
US20150118077A1 (en) * 2013-10-25 2015-04-30 Eberspächer Climate Control Systems GmbH & Co. KG Pump, especially for delivering liquid fuel for a vehicle heater

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201622036D0 (en) * 2016-12-22 2017-02-08 Lenel Ursula And Cambridge Mechatronics Variable valve infusion pump

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030198558A1 (en) * 2002-04-22 2003-10-23 Nason Clyde K. Shape memory alloy wire driven positive displacement micropump with pulsatile output
US20050238503A1 (en) * 2002-10-09 2005-10-27 Rush Benjamin M Variable volume, shape memory actuated insulin dispensing pump
US20070112326A1 (en) * 2005-11-04 2007-05-17 David Bosshard Device for Automated Delivery of a Liquid Medicament into a Patient's Body
US20090283377A1 (en) * 2008-05-15 2009-11-19 Roe Steven N Drug delivery pump drive using a shaped memory alloy wire
US20150118077A1 (en) * 2013-10-25 2015-04-30 Eberspächer Climate Control Systems GmbH & Co. KG Pump, especially for delivering liquid fuel for a vehicle heater

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2600367A (en) * 2017-05-17 2022-04-27 Cambridge Mechatronics Ltd Shape memory alloy based drug delivery device
GB2600367B (en) * 2017-05-17 2022-07-27 Cambridge Mechatronics Ltd Shape memory alloy based drug delivery device

Also Published As

Publication number Publication date
WO2018146467A1 (en) 2018-08-16
GB201913010D0 (en) 2019-10-23
GB2574535B (en) 2022-11-30
GB201702038D0 (en) 2017-03-22

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