Systems, devices and methods for resuscitation
Methods, devices, systems of resuscitating a patient including accessing an arterial vessel positioning a catheter into the arterial vessel advancing the catheter through the arterial vessel to position it below a vessel supplying blood to a heart and a brain expanding an expandable portion of the catheter to prevent blood from flowing past the expanded portion and infusing a substance retrograde into the artery within the arterial section between the heart and the expanded portion of the catheter.
1. A method of resuscitating a patient consisting:
advancing a catheter through an arterial vessel;
positioning the catheter below a vessel that supplies arterial blood to a heart and a brain of the patient;
infusing a flow of blood through the catheter;
increasing a resistance of fluid flow at a distal end of the catheter to cause the flow of blood to expand an expandable portion of the catheter which prevents arterial blood from flowing past the expandable portion in the arterial vessel; and
reducing the resistance of fluid flow at the distal end of the catheter such that the flow of blood exits the distal end of the catheter into the arterial vessel between the heart and the expandable portion of the catheter.
2. The method of claim 1 , where accessing the arterial vessel involves identifying a location of the arterial vessel by a technique selected from the group consisting of: a) feeling for a pulse and inserting an access device at the pulse; b) using ultrasound; c) using an electric field; d) using a magnetic field disturbance; and e) using tissue density differences.
3. The method of claim 1 , where positioning the catheter further comprises:
placing a needle through a skin and overlying tissue into the arterial vessel;
placing a wire through the needle; and
placing the catheter over the needle or over the wire after removing the needle.
4. The method of claim 1 , further comprising determining a position below the arterial vessel supplying blood to the heart and the brain by a technique selected from the group consisting of: a) determining a distance from an access site to a desired position external to the patient and advancing the catheter to a predetermined distance; b) using xray to place the catheter into appropriate position and to verify that the catheter is in appropriate position; c) detecting a signal from the catheter using a modality selected from the group consisting of light, sound, ultrasonic, heat, cold, and electromagnetic energy to determine placement position.
5. The method of claim 1 , where the catheter comprises a device selected from the group consisting of a) a balloon catheter; b) a catheter with an umbrella structure; c) a catheter having a mechanically expanding spheroid.
6. The method of claim 1 , where providing the flow of infused blood through the catheter comprises additionally infusing a substance selected from the group comprising an oxygen carrier selected from the group consisting of a perflourocarbon, a calcium substance, an EDTA, a saline fluid, a cooling fluid and a warming fluid.
7. The method of claim 1 , where the flow is continuous.
8. The method of claim 1 , where the flow is pulsatile.
9. The method of claim 1 , where the flow is at a rate and or pressure sufficient to close an aortic valve.