EP3247422A1 - Pompe à perfusion commandée - Google Patents

Pompe à perfusion commandée

Info

Publication number
EP3247422A1
EP3247422A1 EP15817062.1A EP15817062A EP3247422A1 EP 3247422 A1 EP3247422 A1 EP 3247422A1 EP 15817062 A EP15817062 A EP 15817062A EP 3247422 A1 EP3247422 A1 EP 3247422A1
Authority
EP
European Patent Office
Prior art keywords
pressure
computer
infusion pump
throttle
infusate
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.)
Pending
Application number
EP15817062.1A
Other languages
German (de)
English (en)
Inventor
Karl-Heinz Otto
Jan Gerrit Tönnies
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.)
Tricumed Medizintechnik GmbH
Original Assignee
Tricumed Medizintechnik GmbH
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 Tricumed Medizintechnik GmbH filed Critical Tricumed Medizintechnik GmbH
Publication of EP3247422A1 publication Critical patent/EP3247422A1/fr
Pending 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
    • 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
    • A61M5/14586—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of a flexible diaphragm
    • A61M5/14593—Pressure infusion, e.g. using pumps using pressurised reservoirs, e.g. pressurised by means of pistons pressurised by means of a flexible diaphragm the diaphragm being actuated by fluid 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
    • 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
    • A61M5/14244—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body
    • A61M5/14276—Pressure infusion, e.g. using pumps adapted to be carried by the patient, e.g. portable on the body specially adapted for implantation
    • 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
    • A61M5/16877—Adjusting flow; Devices for setting a flow rate
    • A61M5/16881—Regulating valves

Definitions

  • the invention relates to an implantable infusion pump having a propellant space, an infusate space separated therefrom by an elastic element, a catheter connection and a throttle section lying between infusate space and catheter connection, a switching valve releasing the throttle section, a first pressure sensor located in front of the throttle section, and a computer. controlling the valve with a preset based on a default controller pressure based on a nominal propellant pressure.
  • the pressure at which infusate expelled from the infusate space enters the restriction line depends on the spring rate of the elastic element separating the infusate space from the propellant space and the pressure of the propellant fluctuating with the temperature of the propellant.
  • the rate at which the infusate is supplied from the infusion pump via the catheter connection to the patient is not constant: at a spring rate of the elastic element which supports the pressure of the propellant, ie during its elongation, and / or at one Above the nominal propellant pressure (about the pressure reached at 37 ° C pressure) is actual per unit time relatively much, at a pressure of the propellant space counteracting spring rate of the elastic element and / or under the (at a temperature below Reached 37 ° C) propellant nominal pressure lying propellant actual pressure is given per unit of time relatively little infusate.
  • the invention is therefore based on the object to provide a controllable implantable infusion pump, in which the said Infusatdruckschwankoder be compensated.
  • this object is achieved by the features of claim 1, wherein the term duty cycle as the ratio of the time at which the valve is open to understand the total time.
  • the features of claim 2 In order to correct the not always negligible back pressure of the connected to the catheter connection, leading to the patient catheter, the actual infusion rate, this is compensated with the features of claim 2.
  • Claim 3 indicates a preferred embodiment with a pulse width modulation, but a pulse sab state modulation is possible.
  • the control unit calculates the desired infusion rate, that is to say the amount of infusate which is to be administered to the patient per unit time via the first throttle.
  • the desired infusion rate that is to say the amount of infusate which is to be administered to the patient per unit time via the first throttle.
  • Pulse width target infusion rate / pressure difference x (throttle resistance x period)
  • Variations of the infusate pressure before (or possibly over) the throttle are thus compensated by an inversely proportional correction of the pulse width.
  • a correction of the pulse width needs only for a change in the target infusion rate and a significant change in the pressure difference (which preferably with a through the
  • Pulse period predetermined time interval is checked) to be done. In this way, the energy required by the battery-operated computer is saved.
  • the pump can be further provided with a second throttle track, which emits the infusate permanently.
  • the first throttle section provided with a controlled valve serves for titration, that is to say for determining the concentration of medicament in the infusate during its continuous operation. admit administration via the second throttle line and / or to bolus administration, ie a temporary administration of an additional amount of infusate.
  • the titration and the bolus administration which are critical with regard to accuracy, can be carried out more accurately in the case of the proposed design of the infusion pump. It is also possible to compensate for fluctuations in the pressure difference across the second throttle lying in parallel to the second throttle reduced funding.

Landscapes

  • Health & Medical Sciences (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Vascular Medicine (AREA)
  • Engineering & Computer Science (AREA)
  • Anesthesiology (AREA)
  • Veterinary Medicine (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Public Health (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Fluid Mechanics (AREA)
  • Physics & Mathematics (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)

Abstract

L'invention concerne une pompe à perfusion implantable qui comprend une chambre pour fluide moteur, une chambre pour produit de perfusion, séparée de la précédente par un élément élastique, un raccord de cathéter et une section d'étranglement située entre et la chambre pour produit de perfusion et le raccord de cathéter, une soupape de commande libérant la section d'étranglement, un premier capteur de pression situé avant la section d'étranglement et un calculateur qui assure la commande de la soupape de commande, au moyen d'une spécification calculée par l'intermédiaire d'un appareil de commande extérieur sur la base d'une pression nominale du fluide moteur, ladite pompe à perfusion se caractérisant en ce que l'ordinateur est conçu pour corriger la spécification de l'appareil de commande ou le rapport cyclique qui en résulte, en fonction de la pression effectivement appliquée avant la section d'étranglement.
EP15817062.1A 2015-01-19 2015-11-10 Pompe à perfusion commandée Pending EP3247422A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015000352.6A DE102015000352A1 (de) 2015-01-19 2015-01-19 Steuerbare Infusionspumpe
PCT/DE2015/100479 WO2016116081A1 (fr) 2015-01-19 2015-11-10 Pompe à perfusion commandée

Publications (1)

Publication Number Publication Date
EP3247422A1 true EP3247422A1 (fr) 2017-11-29

Family

ID=55066259

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15817062.1A Pending EP3247422A1 (fr) 2015-01-19 2015-11-10 Pompe à perfusion commandée

Country Status (3)

Country Link
EP (1) EP3247422A1 (fr)
DE (1) DE102015000352A1 (fr)
WO (1) WO2016116081A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018130655A1 (de) 2018-12-03 2020-06-04 Tricumed Medizintechnik Gmbh Verfahren zum Betreiben einer implantierbaren gasdruckbetriebenen Infusionspumpe mit einer Drosselstrecke

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030216683A1 (en) * 2001-11-26 2003-11-20 Nili-Med Ltd. Drug delivery device and method
EP1839693A1 (fr) * 2006-03-30 2007-10-03 Codman Neuro Sciences Sàrl Procédés et dispositifs de surveillance d'un fluide dans une pompe à perfusion implantable
US20080125702A1 (en) * 2001-03-01 2008-05-29 Advanced Neuromodulation Systems, Inc. Non-constant pressure infusion pump

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20050267413A1 (en) * 2004-05-26 2005-12-01 Wang Jong H Flow monitoring devices and methods of use
WO2007123764A2 (fr) * 2006-04-06 2007-11-01 Medtronic, Inc. Systèmes et procédés permettant d'identifier un dysfonctionnement de cathéter au moyen d'une détection de pression
US8535280B2 (en) * 2007-09-26 2013-09-17 Medtronic, In Pressure based refill status monitor for implantable pumps
WO2009088608A2 (fr) * 2008-01-02 2009-07-16 The Regents Of The University Of Michigan Dispositif d'administration double de médicament
DE102009018024A1 (de) * 2009-04-18 2010-10-28 Tricumed Medizintechnik Gmbh Implantierbare Infusionspumpe mit über den Druck des Wirkstoffs steuerbaren Ventilen und Steuergerät für eine solche Pumpe
DE102009034013A1 (de) * 2009-07-21 2011-02-10 Tricumed Medizintechnik Gmbh Implantierbare Infusionspumpe
DE102010034560A1 (de) 2010-08-17 2012-02-23 Tricumed Medizintechnik Gmbh Infusionspumpe

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080125702A1 (en) * 2001-03-01 2008-05-29 Advanced Neuromodulation Systems, Inc. Non-constant pressure infusion pump
US20030216683A1 (en) * 2001-11-26 2003-11-20 Nili-Med Ltd. Drug delivery device and method
EP1839693A1 (fr) * 2006-03-30 2007-10-03 Codman Neuro Sciences Sàrl Procédés et dispositifs de surveillance d'un fluide dans une pompe à perfusion implantable

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2016116081A1 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102018130655A1 (de) 2018-12-03 2020-06-04 Tricumed Medizintechnik Gmbh Verfahren zum Betreiben einer implantierbaren gasdruckbetriebenen Infusionspumpe mit einer Drosselstrecke

Also Published As

Publication number Publication date
DE102015000352A1 (de) 2016-07-21
WO2016116081A1 (fr) 2016-07-28

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