Mechanical cpr device with automatic suction cup attachment
AssigneePhysio-Control, Inc.
InventorsLars Anders Nilsson, Bjarne Madsen Härdig
Life of this patent
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Abstract
A suction cup on the end of a piston of a mechanical CPR device can be automatically attached to a patient's torso. The mechanical CPR device can extend the piston until a first position at which the suction cup comes into contact with the patient's torso. The piston can be further extended to cause air to be forced out from an area between the suction cup and the patient's torso until a first threshold is reached. The piston can be retracted until the suction cup is at the first position. The piston can be further retracted from the first position until a second threshold is exceeded. The piston can then be extended to a second point at which the second threshold is no longer exceeded.
Claims26
A mechanical CPR device, comprising:
- a piston having a suction cup attached an end thereof;
- a driving component configured to extend the piston toward a patient's torso and retract the piston away from the patient's torso;
- and
- a controller configured to determine a reference position by at least controlling the driving component to at least:
- extend the piston until a first position at which the suction cup comes into contact with the patient's torso,
- further extend the piston to cause air to be forced out from an area between the suction cup and the patient's torso until a first threshold is reached,
- retract the piston until the suction cup is at the first position,
- further retract the piston from the first position until a second threshold is exceeded, and
- extend the piston to a second point at which the second threshold is no longer exceeded, the reference position being based at least in part on the second 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 piston from the reference position to a depth and retracting the piston from the depth to the reference position, and
- actively decompress the patient's torso by retracting the piston from the reference position to a height above the reference position.
A method of automatically attaching a suction cup to a patient's torso, the suction cup located on an end of a piston of a mechanical CPR device, the method comprising:
- extending, by the mechanical CPR device, the piston until a first position at which the suction cup comes into contact with the patient's torso;
- further extending, by the mechanical CPR device, the piston to cause air to be forced out from an area between the suction cup and the patient's torso until a first threshold is reached;
- retracting, by the mechanical CPR device, the piston until the suction cup is at the first position;
- further retracting, by the mechanical CPR device, the piston from the first position until a second threshold is exceeded;
- and
- extending, by the mechanical CPR device, the piston to a second point at which the second threshold is no longer exceeded, wherein a reference position is based at least in part on the second point.
A method of performing mechanical CPR, the method comprising:
- automatically attaching, by a mechanical CPR device, a suction cup of the mechanical CPR device to a patient's torso, the suction cup located on an end of a piston of the mechanical CPR device;
- setting in, by the mechanical CPR device, a reference position of the suction cup;
- extending, by the mechanical CPR device, the piston from the reference position to a particular depth below the reference position;
- retracting, by the mechanical CPR device, the piston from the particular depth to a particular height above the reference position;
- and
- extending, by the mechanical CPR device, the piston from the particular height to the reference position.
A mechanical CPR device, comprising:
- a piston having a suction cup attached an end thereof;
- a driving component configured to extend the piston toward a patient's torso and retract the piston away from the patient's torso;
- and
- a controller configured to at least:
- position the piston at a reference point with the suction cup attached to the patient's torso,
- retract the piston from the reference position to a height above the reference point, and
- extend the piston from the height above the reference point to the reference position.
Dependencies are inferred from the claim text.