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1. WO1991000113 - INFUSION SYSTEM, METHODOLOGY, AND ALGORITHM FOR IDENTIFYING PATIENT-INDUCED PRESSURE ARTIFACTS

Publication Number WO/1991/000113
Publication Date 10.01.1991
International Application No. PCT/US1990/003489
International Filing Date 20.06.1990
IPC
A61M 5/168 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES 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
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm rests
14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
168Means for controlling media flow to the body or for metering media to the body, e.g. drip meters, counters
CPC
A61M 5/16831
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
168Means 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
16831Monitoring, detecting, signalling or eliminating infusion flow anomalies
A61M 5/16859
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
MDEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY
5Devices for bringing media into the body in a subcutaneous, intra-vascular or intramuscular way; Accessories therefor, e.g. filling or cleaning devices, arm-rests
14Infusion devices, e.g. infusing by gravity; Blood infusion; Accessories therefor
168Means 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
16831Monitoring, detecting, signalling or eliminating infusion flow anomalies
16854by monitoring line pressure
16859Evaluation of pressure response, e.g. to an applied pulse
Y10S 128/13
YSECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
10TECHNICAL SUBJECTS COVERED BY FORMER USPC
STECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
128Surgery
13Infusion monitoring
Applicants
  • BAXTER INTERNATIONAL INC. [US/US]; One Baxter Parkway Deerfield, IL 60015, US
Inventors
  • BOBO, Donald, E.; US
  • MEIER, Edward, F.; US
  • SEGUINE, Dennis, R.; US
  • LAPP, Theodore, R.; US
Agents
  • SCHAAFSMA, Paul, E. ; One Baxter Parkway Deerfield, IL 60015, US
Priority Data
369,80122.06.1989US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) INFUSION SYSTEM, METHODOLOGY, AND ALGORITHM FOR IDENTIFYING PATIENT-INDUCED PRESSURE ARTIFACTS
(FR) SYSTEME DE PERFUSION, METHODOLOGIE, ET ALGORITHME D'IDENTIFICATION D'ARTEFACTS DE PRESSION INDUITS PAR UN PATIENT
Abstract
(EN)
An infusion system (11) includes fluid-delivery components for delivering a fluid from a separate source (13) of the fluid into a patient, transducer components (51) for producing a signal related to the pressure of the fluid in the fluid-delivery components (17), and identification components responsive to the signal for identifying pressure artifacts characteristic of patient activity. Gravity-fed infusion may be employed as well as infusion with a flow control device (15), and identification may be accomplished with a microprocessor (59) for examining the waveform of the signal and identifying pressure artifacts characteristic of patient activity amidst pressure changes caused by fluid-delivery components (15, 17) so that site checking can be conducted during quiet periods, i.e., times of little patient activity. A method of detecting an abnormal infusion condition includes infusing a fluid into a patient through a conduit (17), with the pressure of the fluid in the conduit (17) being subject to influence by patient activity, monitoring the fluid pressure in the conduit (17) in order to detect pressure artifacts characteristic of patient activity, and performing a site check for abnormal infusion conditions at a time when no such pressure artifacts are detected.
(FR)
Un système de perfusion (11) comprend des composants d'acheminement de fluide destinés à acheminer un fluide provenant d'une source séparée (13) du fluide dans un patient, des composants transducteurs (51) destinés à produire un signal représentant la pression du fluide se trouvant dans les composants d'acheminement du fluide (17), ainsi que des composants d'identification réagissant au signal afin d'identifier des artefacts de pression caractéristique de l'activité d'un patient. On peut utiliser la perfusion alimentée par gravité ainsi que la perfusion à l'aide d'un dispositif de commande d'écoulement (15), et on peut procéder à l'identification à l'aide d'un microprocesseur (59) afin d'examiner la forme d'onde du signal et d'identifier des artefacts de pression caractéristiques de l'activité d'un patient entre des changements de pression provoqués par les composants d'acheminement de fluide (15, 17), de manière que l'on peut procéder à une vérification sur site pendant des périodes calmes, c'est-à-dire des moments de pleine activité du patient. Un procédé de détection d'un état de perfusion anormal consiste à introduire un fluide dans un patient à l'aide d'un conduit (17), la pression du fluide se trouvant dans le conduit (17) étant susceptible d'être influencée par l'activité du patient, à contrôler la pression du fluide dans ledit conduit (17) afin de détecter des artefacts de pression caractéristiques de l'activité du patient, puis à procéder à une vérification sur site en vue de déterminer des états de perfusion anormaux, à un moment où aucun artefact de pression n'est détecté.
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