Mechanical cpr device
AssigneePhysio-Control, Inc.
InventorsLars Anders Nilsson, Bjarne Madsen Härdig
Life of this patent
Estimating the term…
Abstract
A mechanism attached to a mechanical CPR device can be automatically attached to the patient's torso. The mechanical CPR device can extend the mechanism to a first position at which the mechanism comes into contact with the patient's torso. The mechanism can be further extended until a first threshold is reached. The mechanism can be retracted to the first position. The mechanism can be further retracted from the first position until a second threshold is exceeded. The mechanism can then be extended to a second point at which the second threshold is no longer exceeded. The mechanism may comprise a suction cup or sticker plate, and may be attached to an end of a piston of the mechanical CPR device.
Claims28
A mechanical CPR device, comprising:
- a mechanism that can attach to a patient's torso;
- a driving component configured to extend the mechanism toward the patient's torso and retract the mechanism away from the patient's torso;
- and
- a controller configured to determine a reference position by controlling the driving component to at least:
- extend the mechanism to a first position at which the mechanism comes into contact with the patient's torso,
- further extend the mechanism until a first threshold is reached,
- retract the mechanism until the mechanism is at the first position,
- further retract the mechanism from the first position until a second threshold is exceeded, and
- extend the mechanism to a point at which the second threshold is no longer exceeded, the reference position being based at least in part on the point;
- wherein the controller is further configured to perform mechanical CPR by controlling the driving component to at least:
- compress the patient's torso by extending the mechanism from the reference position to a depth and retracting the mechanism from the depth to the reference position, and
- actively decompress the patient's torso by retracting the mechanism from the reference position to a height above the reference position, whereby the patient's torso is decompressed above the torso's natural resting position and above the reference position;
- and
- wherein the reference position is the position from which the depth of CPR compressions and the height of decompressions are measured.
A method of automatically attaching a mechanism that can attach to a patient's torso to a patient's torso, the mechanism that can attach to a patient's torso located on a mechanical CPR device, the method comprising:
- extending the mechanism to a first position at which the mechanism comes into contact with the patient's torso;
- further extending, by the mechanical CPR device, the mechanism until a first threshold is reached;
- retracting the mechanism until the mechanism is at the first position;
- further retracting the mechanism from the first position until a second threshold is exceeded, whereby the patient's torso is decompressed above the torso's natural resting position;
- and
- extending the mechanism to a point at which the second threshold is no longer exceeded, wherein a reference position is based at least in part on the point;
- wherein the reference position is the position from which the depth of CPR compressions and the height of decompressions are measured.
A method of performing mechanical CPR, the method comprising:
- automatically attaching a mechanism that can attach to a patient's torso of the mechanical CPR device to a patient's torso;
- setting the mechanism to a reference position;
- extending the mechanism from the reference position to a particular depth below the reference position;
- retracting the mechanism from the particular depth to a particular height above the reference position, whereby the patient's torso is decompressed above the torso's natural resting position;
- and
- extending the mechanism from the particular height to the reference position;
- wherein the reference position is the position from which the depth of CPR compressions and the height of decompressions are measured.
A mechanical CPR device, comprising:
- a mechanism that can attach to a patient's torso;
- a driving component configured to extend the mechanism toward the patient's torso and retract the mechanism away from the patient's torso;
- and
- a controller configured to at least:
- position the mechanism at a reference point with the mechanism attached to the patient's torso,
- retract the mechanism from the reference position to a height above the reference point, whereby the patient's torso is decompressed above the torso's natural resting position, and
- extend the mechanism from the height above the reference point to the reference position;
- wherein the reference position is the position from which the depth of CPR compressions and the height of decompressions are measured.
Dependencies are inferred from the claim text.