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1. WO2020092757 - FLUID PRESSURE SENSOR PROTECTION

Publication Number WO/2020/092757
Publication Date 07.05.2020
International Application No. PCT/US2019/059144
International Filing Date 31.10.2019
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
A61M 5/48 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
48having means for varying, regulating, indicating or limiting injection pressure
CPC
A61B 2562/0247
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
2562Details of sensors; Constructional details of sensor housings or probes; Accessories for sensors
02Details of sensors specially adapted for in-vivo measurements
0247Pressure sensors
A61B 5/02141
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
02Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
021Measuring pressure in heart or blood vessels
02141Details of apparatus construction, e.g. pump units or housings therefor, cuff pressurising systems, arrangements of fluid conduits or circuits
A61B 5/0235
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Detecting, measuring or recording for diagnostic purposes
02Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
021Measuring pressure in heart or blood vessels
022by applying pressure to close blood vessels, e.g. against the skin; Ophthalmodynamometers
0235Valves specially adapted therefor
A61M 5/16854
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
A61M 5/48
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
48having means for varying, regulating, indicating or limiting injection pressure
G01L 19/142
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
19Details of, or accessories for, apparatus for measuring steady or quasi-steady pressure of a fluent medium insofar as such details or accessories are not special to particular types of pressure gauges
14Housings
142Multiple part housings
Applicants
  • ACIST MEDICAL SYSTEMS, INC. [US]/[US]
Inventors
  • BAKKEN, Matthew James Russell
Agents
  • HIPKINS, Thomas R.
  • BUSS, Eric D.
  • CAGE, Darnell M.
  • ENG, Malissa C.
  • FAIRBAIRN, Kara K.
  • KADIEVITCH, Natalie D.
  • LAVANWAY, JR., Paul J.
  • PARZYCH, John S.
  • SEGELBAUM, Charles D.
  • SNUSTAD, Eric J.
  • SPANHEIMER, Ryan M.
  • ZINNIEL, Greggory L.
  • PRATT, Zachary S.
Priority Data
62/753,47231.10.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) FLUID PRESSURE SENSOR PROTECTION
(FR) PROTECTION DE CAPTEUR DE PRESSION DE LIQUIDE
Abstract
(EN)
Embodiments for protecting low-pressure blood pressure sensors in high-pressure fluid flow applications by equalizing pressure on both sides of a pressure sensor's diaphragm during high pressure are disclosed. A sensor protection device may include a pressure sensor assembly, a housing, and a plunger assembly. During low pressure, fluid in the primary flow path can flow through the housing, transferring its pressure to a first side of the diaphragm; the plunger assembly can prevent fluid flow into a secondary flow path in the housing, transferring atmospheric pressure to a second side of the diaphragm. During high pressure, fluid can still flow through the primary flow path, and the plunger assembly may now allow fluid flow into the secondary flow path, transferring pressure from the same fluid to the second side of the diaphragm to equal pressure across the diaphragm. The plunger assembly may automatically transition between low- and high-pressure configurations.
(FR)
Selon des modes de réalisation, la présente invention concerne la protection de capteurs de tension artérielle à basse pression dans des applications d’écoulement de liquide à haute pression par égalisation de la pression sur les deux côtés du diaphragme d’un capteur de pression pendant la haute pression. Un dispositif de protection de capteur peut comprendre un ensemble capteur de pression, un logement et un ensemble piston. Pendant la basse pression, le liquide dans le trajet d’écoulement primaire peut s’écouler à travers le logement, transférer sa pression vers un premier côté du diaphragme ; l’ensemble piston peut empêcher le liquide de s’écouler dans un trajet d’écoulement secondaire dans le logement, transférer la pression atmosphérique vers un second côté du diaphragme. Pendant la haute pression, le liquide peut toujours s’écouler à travers le trajet d’écoulement primaire, et l’ensemble piston peut maintenant permettre au liquide de s’écouler dans le trajet d’écoulement secondaire, transférant la pression du même liquide vers le second côté du diaphragme pour égaliser la pression à travers le diaphragme. L’ensemble piston peut automatiquement effectuer la transition entre les configurations basse et haute pression.
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