WO1999051288A1 - Regulateur electronique pour therapie par solution liquide avec cartouche de goutte-a-goutte jetable - Google Patents

Regulateur electronique pour therapie par solution liquide avec cartouche de goutte-a-goutte jetable Download PDF

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Publication number
WO1999051288A1
WO1999051288A1 PCT/IT1998/000120 IT9800120W WO9951288A1 WO 1999051288 A1 WO1999051288 A1 WO 1999051288A1 IT 9800120 W IT9800120 W IT 9800120W WO 9951288 A1 WO9951288 A1 WO 9951288A1
Authority
WO
WIPO (PCT)
Prior art keywords
cartridge
flow rate
dripping
rate regulator
electronic
Prior art date
Application number
PCT/IT1998/000120
Other languages
English (en)
Inventor
David Pesarin
Francesco Carugno
Anna Mainolfi
Original Assignee
David Pesarin
Francesco Carugno
Anna Mainolfi
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 David Pesarin, Francesco Carugno, Anna Mainolfi filed Critical David Pesarin
Priority to AU72337/98A priority Critical patent/AU7233798A/en
Publication of WO1999051288A1 publication Critical patent/WO1999051288A1/fr

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
    • A61M5/168—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
    • A61M5/16886—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 for measuring fluid flow rate, i.e. flowmeters
    • A61M5/1689—Drip counters

Definitions

  • the new device has the ability to regulate automatically the flow rate during the administration of fluids in all those conditions where the intravenous therapy is needed.
  • the new device in the post-operative treatment, when it must be used a specific drug that requires careful dosing regimen and/or for the infusion of high calories solutions for the total parenteral nutrition.
  • these delivery pumps need every-day change of the infusion tubing, because of their rapid warn out, to maintain constant the adjusted delivery rate. More over the lodgement and the inspection of these tubing sets pose further work load and complexity to the every day use of these pumps.
  • the infusion pumps are cumbersome and have a limited carrying use being heavy weighted and large volume sized. Also they need supporting poles, dedicated brackets and enough room to be positioned close to the patients.
  • the present device to be used for the administration of intravenous fluid therapy, has innovations that eliminates the aforementioned limits and drawbacks. It is composed of two parts: a dedicated dripping cartridge for the gravitational fluid infusion (see Fig.l); and of an electronic optical drop detector feed-backed with a processing data unit that regulates the flow rate.
  • the outstanding innovation of this invention relates to the lodgement of the dedicated, disposable dripping cartridge.
  • the new device is illustrated in the enclosed technical drawings.
  • the Fig.l shows the longitudinal cross sectional view of the dripping cartridge.
  • the peculiar parts of the new dripping cartridge model are numbered in the Fig.l as follows: 1) double lumen perforating needle with self-locking retracting fins.
  • one lumen is devoted for the fluid outflow and the other for the air inflow; 2) antibacterial filter at the air inlet site of the needle with removable closing cap; 3) superior dripping cannula tip; 4)superior chamber for the detection of the dripping fluid; 5) superior diaphragm for the anchorage of the upper end of the elastomeric rubber-silicon tube;6) siliconic tube; 7) inferior diaphragm for the anchorage of the lower end of the elastomeric rubber-silicon tube; 8) inferior dripping chamber; 9) origin of the intravenous infusion tube; 10) slide seat to help in the right orientation of the cartridge inside the electronic device. Also the Fig.
  • l shows the modules scheme of the main electronic components.
  • the electronic circuitry modules are numbered as follows: 11) light source; 12) optical photodetector; 13) discriminator; 14) counter; 15)clock; 16) processing data unit; 17) micro servomotor.
  • the enclosed Fig.2 report the frontal and lateral view of the external body of the device, with the location of the control panel buttons, and the proper working position of the dripping cartridge.
  • the same figure shows the following points: 1) four digit liquid crystal display to indicate the quantity of fluids infused per hour and the battery status charge; 2) multiple selection buttons to choose the fluid to be infused; 3) memory button to display the total amount of fluid infused from the start treatment; 4) button to activate the minimum flow rate required to keep vein open; 5) OK/START button to confirm the setted data and to activate the device; 6) ON/OFF button; 7) PAUSE button that temporarily shuts down the dripping fluid retaining the pre-setted value into memory; 8) RESET button to cancel the previous entered data and to clear from any setting error; 9) ten digit button control panel; 10) visual warning signal for the regular flow rate; 11) and 12) mechanic release latch-buttons for unlocking and ejecting the dripping cartridge; 13) skidproof grip.
  • the device is programmed choosing the kind of solution to administer (crystalloids, or colloids, or plasma, or packed red cells) and the flow rate infusion value in milliliters per hour (ml/Hr).
  • the internal diameter of the dripping cannula tip is a factory fixed value and it is integrated into the memory module of the
  • the rubber cork membrane (Fig.l #19) of the liquid container can be perforated.
  • the lower dripping chamber (Fig.l #8) is manually squeezed for the priming of the dripping set, filling the
  • the superior dripping chamber of the cartridge (Fig.l #4), located inside the electronic device, is positioned between the light source (Fig.l #11) and the photodetector (Fig.l #12). This positioning
  • 105 makes it possible to detect and count the falling drops. When a drop interrupts the light beam, this is sensed by the photodetector.
  • the captured signal is filtered and transduced by a discriminator (Fig.l #13) and sent, via the interposition of a counter (Fig.l #14) and a clock (Fig.l #15), to the processing data unit (Fig.l #16).
  • the unit Fig.l #13
  • the processing unit 110 compares the data received (number of drops per unit time) with those entered by the operator (milliliters per hour). If it is needed the processing unit sends a signal to the micro servomotor (Fig.l #17) that acting on the elastomeric-siliconic tube (Fig.l #6), increase or decrease the flow rate to match it with the entered value (milliliters
  • the Fig.2 reports the following parts:
  • the present device is entirely controlled by electronic components. It needs of an electronic circuitry board, the main part of which is represented by a microprocessor easily available on the market.
  • the microprocessor must be factory programmed to be able to perform all the above mentioned feed-backed regulating functions.
  • the only mechanical part controlled by the electronic board is the micro servomotor. This is easy to find on the market too.
  • This micro servomotor is able to do micrometric step movements. All the electronic components and the micro servomotor, must be assembled inside a water proof plastic body. Inside the apparatus is located the receptacle site for the dripping cartridge. The device will be very compact (cigarette-package like size) and will be also light weight to stand alone hanging under the fluid containers.
  • the disposable dripping cartridge for this new device must have a transparent dripping chamber walls for the detection of the falling drops.
  • the elastomeric rubber tube (siliconic tube)
  • the dripping tubing set can be made of dark light-proof plastic.
  • the dripping chamber for the detection of the drops must have transparent walls. This part anyway is light protected from its position inside the apparatus.

Landscapes

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

Abstract

Le dispositif faisant l'objet de cette invention est conçu pour être utilisé lors de l'administration intraveineuse de liquides et de médicaments. Ce dispositif est formé par deux parties associées: une cartouche spécialisée et jetable et le régulateur d'écoulement électronique. La cartouche de goutte-à-goutte jetable présente une forme cylindrique et elle est fabriquée en matériau plastique. Ledit dispositif permet au contrôleur du régulateur électronique de détecter et de contrôler le goutte-à-goutte et de maintenir constant le débit de la substance administrée. Ledit dispositif comprend un tube silicone en caoutchouc incorporé servant à régler le débit sous l'effet d'un micromoteur d'asservissement agissant sur lui. Ledit dispositif est géré par une carte à circuit électronique. Un microprocesseur sert à analyser les données d'entrée et à commander les signaux de réglage de sortie. Tous les éléments sont contenus dans un boîtier en plastique étanche à l'eau. Une fois assemblé, ledit dispositif est pratique à utiliser en raison de sa taille compacte (de l'ordre d'un paquet de cigarettes) et de son poids léger.
PCT/IT1998/000120 1998-04-07 1998-05-14 Regulateur electronique pour therapie par solution liquide avec cartouche de goutte-a-goutte jetable WO1999051288A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU72337/98A AU7233798A (en) 1998-04-07 1998-05-14 Electronic regulator for fluid therapy with disposable dripping cartridge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT98RM000222A IT1299158B1 (it) 1998-04-07 1998-04-07 Dispositivo con cartuccia monouso per infusione gravitazionale per terapia endovenosa e/o parenterale con regolazione del flusso a
ITRM98A000222 1998-04-07

Publications (1)

Publication Number Publication Date
WO1999051288A1 true WO1999051288A1 (fr) 1999-10-14

Family

ID=11405783

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IT1998/000120 WO1999051288A1 (fr) 1998-04-07 1998-05-14 Regulateur electronique pour therapie par solution liquide avec cartouche de goutte-a-goutte jetable

Country Status (3)

Country Link
AU (1) AU7233798A (fr)
IT (1) IT1299158B1 (fr)
WO (1) WO1999051288A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0021405A1 (fr) * 1979-06-26 1981-01-07 Intermedicat GmbH Chambre à gouttes munie d'un perforateur à possibilités d'ajustage améliorées
US4361147A (en) * 1979-01-22 1982-11-30 Master Medical Corporation Flow control device for administration of intravenous fluids
US4775368A (en) * 1986-02-19 1988-10-04 Pfrimmer-Viggo Gmbh & Co. Kg Infusion device
EP0321996A2 (fr) * 1987-12-17 1989-06-28 MR. W.M.H. KERBOSCH B.V. trading under the name of MTD HOLDING Appareil pour contrôler le débit d'un fluide d'infusion dans un système d'infusion
US5211201A (en) * 1986-03-04 1993-05-18 Deka Products Limited Partnership Intravenous fluid delivery system with air elimination

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4361147A (en) * 1979-01-22 1982-11-30 Master Medical Corporation Flow control device for administration of intravenous fluids
EP0021405A1 (fr) * 1979-06-26 1981-01-07 Intermedicat GmbH Chambre à gouttes munie d'un perforateur à possibilités d'ajustage améliorées
US4775368A (en) * 1986-02-19 1988-10-04 Pfrimmer-Viggo Gmbh & Co. Kg Infusion device
US5211201A (en) * 1986-03-04 1993-05-18 Deka Products Limited Partnership Intravenous fluid delivery system with air elimination
EP0321996A2 (fr) * 1987-12-17 1989-06-28 MR. W.M.H. KERBOSCH B.V. trading under the name of MTD HOLDING Appareil pour contrôler le débit d'un fluide d'infusion dans un système d'infusion

Also Published As

Publication number Publication date
ITRM980222A1 (it) 1999-10-07
AU7233798A (en) 1999-10-25
ITRM980222A0 (it) 1998-04-07
IT1299158B1 (it) 2000-02-29

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