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1. WO2022051716 - WIRELESS, LCR-BASED, PASSIVE SENSOR SYSTEMS FOR IMPLANTABLE DEPLOYMENT USING COLLAPSIBLE ELECTROMECHANICS AND APPLICATIONS OF SAME

Publication Number WO/2022/051716
Publication Date 10.03.2022
International Application No. PCT/US2021/049286
International Filing Date 07.09.2021
IPC
A61B 5/00 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
A61B 5/02 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
02Measuring 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; Heart catheters for measuring blood pressure
A61F 2/24 2006.1
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
02Prostheses implantable into the body
24Heart valves
CPC
A61B 5/00
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes
A61B 5/02
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring 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
A61F 2/24
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
FFILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
2Filters implantable into blood vessels; Prostheses, i.e. artificial substitutes or replacements for parts of the body; Appliances for connecting them with the body; Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents
02Prostheses implantable into the body
24Heart valves ; ; Vascular valves, e.g. venous valves; Heart implants, e.g. passive devices for improving the function of the native valve or the heart muscle; Transmyocardial revascularisation [TMR] devices; Valves implantable in the body
Applicants
  • NORTHWESTERN UNIVERSITY [US]/[US]
Inventors
  • ROGERS, John A.
  • BANKS, Anthony R.
  • LU, Di
Agents
  • XIA, Tim Tingkang
Priority Data
63/074,68004.09.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) WIRELESS, LCR-BASED, PASSIVE SENSOR SYSTEMS FOR IMPLANTABLE DEPLOYMENT USING COLLAPSIBLE ELECTROMECHANICS AND APPLICATIONS OF SAME
(FR) SYSTÈMES DE CAPTEURS PASSIFS SANS FIL BASÉS SUR LCR POUR DÉPLOIEMENT IMPLANTABLE UTILISANT UNE ÉLECTROMÉCANIQUE PLIABLE ET APPLICATIONS DE CEUX-CI
Abstract
(EN) Provided are systems and methods for wireless, LCR-based, passive sensor systems for catheter or other implantable deployment using collapsible electromechanics. Each sensor system includes a deformable coil and a capacitive pressure sensor, collectively forming a LCR circuit having a self-resonant frequency. Multiple sensor systems may be implanted in a collapsible artificial valve to non-invasively detect the status of the collapsible artificial valve. Specifically, when the collapsible artificial valve is implanted in a mammal subject, antennas may be disposed on the skin of the mammal subject to wirelessly measure the self-resonant frequencies of the LCR circuits of the sensor systems. Thus, the blood pressure of the mammal subject may be calculated based on the self-resonant frequencies measured by the antenna, and the status of the collapsible artificial valve may be determined based on the blood pressure.
(FR) L'invention concerne des systèmes et des procédés pour des systèmes de capteurs passifs sans fil basé sur LCR sans fil pour un cathéter ou un autre déploiement implantable à l'aide d'une électromécanique pliable. Chaque système de capteur comprend une bobine déformable et un capteur de pression capacitif, formant collectivement un circuit LCR ayant une fréquence auto-résonante. De multiples systèmes de capteurs peuvent être implantés dans une valve artificielle pliable pour détecter de manière non invasive l'état de la valve artificielle pliable. En particulier, lorsque la valve artificielle pliable est implantée chez un sujet mammifère, des antennes peuvent être disposées sur la peau du sujet mammifère pour mesurer sans fil les fréquences auto-résonnantes des circuits LCR des systèmes de capteurs. Ainsi, la pression artérielle du sujet mammifère peut être calculée sur la base des fréquences auto-résonnantes mesurées par l'antenne, et l'état de la valve artificielle pliable peut être déterminé sur la base de la pression artérielle.
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