Physio-control, Inc.

Abbott Laboratories Corporation

Intermec IP Corporation

Intermec, Inc.

Physio-control Manufacturing Corporation

Steven B Duke

Fred William Chapman

Anders Nilsson

Sara Lindroth

Anders Jeppsson

Jonas Lagerstrom

Gregory T Kavounas

Mitchell Allen Smith

Krystyna Szul

Erik Von Schenck

Marcus Ehrstedt

Fredrik Arnwald

Bo Mellberg

Paul Rasmusson

Ryan Landon

Joseph Leo Sullivan

Isabelle L Banville

Alan F Jovanovich

Bruce G Warren

Duane G Charron

Robert G Walker

Gerald G Vurek

William G Lundell

Jeffrey B Yim

Cheryl D Germany

Steven Chester

John Giaever

John F Holic, Jr

Per Axelsson

Conrad T Oi Fong

Tobias Svahn

Wiktor Kocula

Lars Anders Jörgen Segerstein

Alexey Titov

David D Aoyama

Jeffrey J Dahlin

Bjarne Madsen Hardig

An active backboard that can assist with adjusting a patient on the backboard to ensure that the backboard is correctly aligned for a compression mechanism of an upper portion of a mechanical cardiopulmonary resuscitation (CPR) device to perform compressions. The active backboard can also include multiple layers that can slide or move relative to each other to move the patient relative to the backboard. The active backboard can include roller bars, a wheel, and/or projections to assist with moving a patient relative to the backboard.

Mechanical CPR device with active backboard

A CPR machine () is configured to perform, on a patient's () chest, compressions that alternate with releases. The CPR machine includes a compression mechanism (), and a driver system () configured to drive the compression mechanism. A force sensing system () may sense a compression force, and the driving can be adjusted accordingly if there is a surprise. For instance, driving may have been automatic according to a motion-time profile, which is adjusted if the compression force is not as expected (). An optional chest-lifting device () may lift the chest between the compressions, to assist actively the decompression of the chest. A lifting force may be sensed, and the motion-time profile can be adjusted if the compression force or the lifting force is not as expected.

CPR chest compression machine adjusting motion-time profile in view of detected force

Embodiments of the present concept are directed to CPR chest compression machines that include a sensor to detect a parameter about a patient, such as an indication of patient recovery, and include a processor that determines whether to cease series of successive compressions on the patient in response to the detected parameter.

CPR chest compression machine stopping to detect patient recovery

A CPR machine () is configured to perform compressions on a patient's () chest that alternate with releases. The CPR machine includes a compression mechanism (), and a driver system () configured to drive the compression mechanism. A compression force may be sensed, and the driving is adjusted accordingly if there is a surprise. For instance, driving may have been automatic according to a motion-time profile, which is adjusted if the compression force is not as expected (). An optional chest-lifting device () may lift the chest between the compressions, to assist actively the decompression of the chest. A lifting force may be sensed, and the motion-time profile can be adjusted if the compression force or the lifting force is not as expected. An advantage is that a changing condition in the patient or in the retention of the patient within the CPR machine may be detected and responded to.

Patient data is stored in a medical device, such as an external defibrillator, and may be transferred, or downloaded, from the medical device to a computing device for storage or analysis. In response to the transfer, the medical device protects the patient data so that at least a subset of users cannot access the patient data from the medical device. The other device to which patient data is transferred from the medical device may be remote from the medical device or may be configured to be part of the medical device. The device to which the patient data is transferred from the medical device can be a remote computing device like a computer or server and/or may include or may be an intermediary data management device (DMD). The medical device may be a wearable medical device, such as a wearable defibrillator or a wearable automatic external defibrillator (AED).

Post-download patient data protection in a medical device

The disclosure describes techniques for protecting patient data stored in a medical device, such as an external defibrillator. The patient data may be transferred, or downloaded, from the medical device to another device, such as to a computing device for storage or analysis. In response to the download, the medical device may protect the patient data so that at least subset of users can no longer access the patient data. Patient data may be protected by modifying the data form, encrypting the data, moving the data to another memory module, password protecting the patient data, or modifying an access control list associated with the patient data. While the patient data may also be deleted as a technique for protecting the data, not deleting the data may allow the data to be recovered at a later time by an authorized user, i.e., a user not part of the subset.

A secure communication system is provided for transmitting a country specific frequency allocation in encrypted form between a host processor and a remote device. The secure communication system comprises a host processor and a remote device capable of communicating with the host processor over a communication link. The host processor has a plurality of stored data sets and a predefined encryption algorithm. Each one of the stored data sets comprises a country specific frequency allocation. The remote device has a unique identifier code and also has the predefined encryption algorithm. Responsive to the unique identifier code, the host processor provides a selected one of the plurality of data sets in encrypted form by utilizing the predefined encryption algorithm. The unique identifier code provides an encryption key for the predefined encryption algorithm. The remote device then decrypts the encrypted data set using the predefined encryption algorithm with the identifier code as a decryption key.

Method and apparatus for controlling country specific frequency

A system synchronizes the time of a clock of an electronic physiological instrument with time of a remote time base. The electronic physiological instrument records medical event data and electronically associates event time with the event data While recording, or after recording, the medical event data, the electronic physiological instrument is placed in data communication with the remote time base over a data connection. The remote time base initially determines a reference time from a master clock. The remote time base also transmits a request to the electronic physiological instrument for a current time from a clock in the electronic physiological instrument. If a response is not received from the electronic physiological instrument within a first time period, the clock is not synchronized with the remote time base. If a response is received within the first time period, a time difference is determined between the reference time and the time transmitted from the electronic physiological instrument by subtracting the two times. The time difference is then electronically associated with the medical event data. Associating the time difference with the medical event data allows the time stamps in the event data to be corrected to provide meaningful event reconstruction and analysis independent of any time differences between the two clocks and any time delays incurred in receiving the time from the physiological instrument over the data connection.

System and method for adjusting time associated with medical event data

A calibration system and method for calibrating a medical sensor (16) that monitors chemical blood gases. A calibrator (12) is used in connection with a tray (14) in which the medical sensor is stored in a sterile environment, both before and during the calibration process. The medical sensor is immersed in a liquid (30) in a tonometry chamber (28) defined in the tray and covered by a membrane (120/122) that is permeable to gas, but impermeable to bacteria. During the calibration process, the tray is inserted into the calibrator, bringing a heated platen (26) into contact with the tonometry chamber, so that the liquid can be heated to a calibration temperature substantially equal to the temperature at which the medical sensor will subsequently be used. A first calibration gas is then bubbled through the liquid until a saturated condition is achieved. Once the temperature of the liquid is increased to the desired calibration temperature, as determined by a temperature sensor on the medical sensor, data for a first calibration point is taken. A second calibration gas is then bubbled through the liquid until saturation is achieved, yielding data for a second calibration point, for each of the chemical blood gas parameters. The calibration data is processed to determine calibration coefficients that will be applied to the medical sensor.

Calibration system and method for calibrating a blood gas sensor

A method and system for controlling the intervals during which light signals are sampled in a fiber-optic sensing system compensates for signal artifacts that are caused by movement of the fiber-optic waveguide during the sampling. The method and system sample the light signals at intervals that are shorter than the intervals during which displacement of the optical waveguide occurs in normal use. The short-sampling intervals result in the individual sampling of different wavelengths of light being exposed to the same changes in transmission characteristics of the optical waveguide which causes signal artifacts. Accordingly, when subsequent processing of the collected signals occurs, the effects of the signal artifacts are compensated for.

Method and system of compensating for signal artifacts in a fiber-optic

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Bothell, WA, United States of America

Steven B Duke