The patent's assignee is
News editors obtained the following quote from the background information supplied by the inventors: "In humans, the heart beats to sustain life. In normal operation, it pumps blood through the various parts of the body. More particularly, the various chamber of the heart contract and expand in a periodic and coordinated fashion, which causes the blood to be pumped regularly. More specifically, the right atrium sends deoxygenated blood into the right ventricle. The right ventricle pumps the blood to the lungs, where it becomes oxygenated, and from where it returns to the left atrium. The left atrium pumps the oxygenated blood to the left ventricle. The left ventricle, then, expels the blood, forcing it to circulate to the various parts of the body.
"The heart chambers pump because of the heart's electrical control system. More particularly, the sinoatrial (SA) node generates an electrical impulse, which generates further electrical signals. These further signals cause the above-described contractions of the various chambers in the heart, in the correct sequence. The electrical pattern created by the sinoatrial (SA) node is called a sinus rhythm.
"Sometimes, however, the electrical control system of the heart malfunctions, which can cause the heart to beat irregularly, or not at all. The cardiac rhythm is then generally called an arrhythmia. Arrhythmias may be caused by electrical activity from locations in the heart other than the SA node. Some types of arrhythmia may result in inadequate blood flow, thus reducing the amount of blood pumped to the various parts of the body. Some arrhythmias may even result in a Sudden Cardiac Arrest (SCA). In a SCA, the heart fails to pump blood effectively, and, if not treated, death can occur. In fact, it is estimated that SCA results in more than 250,000 deaths per year in
"One type of arrhythmia associated with SCA is known as Ventricular Fibrillation (VF). VF is a type of malfunction where the ventricles make rapid, uncoordinated movements, instead of the normal contractions. When that happens, the heart does not pump enough blood to deliver enough oxygen to the vital organs. The person's condition will deteriorate rapidly and, if not reversed in time, they will die soon, e.g. within ten minutes.
"Ventricular Fibrillation can often be reversed using a life-saving device called a defibrillator. A defibrillator, if applied properly, can administer an electrical shock to the heart. The shock may terminate the VF, thus giving the heart the opportunity to resume pumping blood. If VF is not terminated, the shock may be repeated, often at escalating energies.
"A challenge with defibrillation is that the electrical shock must be administered very soon after the onset of VF. There is not much time: the survival rate of persons suffering from VF decreases by about 10% for each minute the administration of a defibrillation shock is delayed. After about 10 minutes the rate of survival for SCA victims averages less than 2%.
"The challenge of defibrillating early after the onset of VF is being met in a number of ways. First, for some people who are considered to be at a higher risk of VF or other heart arrhythmias, an Implantable Cardioverter Defibrillator (ICD) can be implanted surgically. An ICD can monitor the person's heart, and administer an electrical shock as needed. As such, an ICD reduces the need to have the higher-risk person be monitored constantly by medical personnel.
"Regardless, VF can occur unpredictably, even to a person who is not considered at risk. As such, VF can be experienced by many people who lack the benefit of ICD therapy. When VF occurs to a person who does not have an ICD, they collapse, because blood flow has stopped. They should receive therapy quickly.
"For a VF victim without an ICD, a different type of defibrillator can be used, which is called an external defibrillator. External defibrillators have been made portable, so they can be brought to a potential VF victim quickly enough to revive them.
"During VF, the person's condition deteriorates, because the blood is not flowing to the brain, heart, lungs, and other organs. Blood flow must be restored, if resuscitation attempts are to be successful.
"Cardiopulmonary Resuscitation (CPR) is one method of forcing blood flow in a person experiencing cardiac arrest. In addition, CPR is the primary recommended treatment for some patients with some kinds of non-VF cardiac arrest, such as asystole and pulseless electrical activity (PEA). CPR is a combination of techniques that include chest compressions to force blood circulation, and rescue breathing to force respiration.
"Properly administered CPR provides oxygenated blood to critical organs of a person in cardiac arrest, thereby minimizing the deterioration that would otherwise occur. As such, CPR can be beneficial for persons experiencing VF, because it slows the deterioration that would otherwise occur while a defibrillator is being retrieved. Indeed, for patients with an extended down-time, survival rates are higher if CPR is administered prior to defibrillation.
"Advanced medical devices can actually coach a rescuer who performs CPR. For example, a medical device can issue instructions, and even prompts, for the rescuer to perform CPR more effectively."
As a supplement to the background information on this patent application, VerticalNews correspondents also obtained the inventors' summary information for this patent application: "The present description gives instances of devices, systems, software and methods, the use of which may help overcome problems and limitations of the prior art.
"In certain embodiments, an external medical device may include a housing, an energy storage module within the housing for storing an electrical charge, and a defibrillation port for guiding via electrodes the stored electrical charge to a person. The device may also include a user interface structured to deliver prompts to a user during a defibrillation session and a locale detector in the housing structured to determine a present locale of the device. The prompts delivered by the user interface to the user during the defibrillation session may be in accordance with a protocol that is selected based on the present locale.
"An advantage over the prior art is that an external medical device in accordance with the disclosed technology can deliver the prompts in accordance with a protocol associated with the present location of the device, regardless of whether the device has been recently moved to a different location. Also, because the protocol may specify a particular language in which the user interface is to deliver the prompts to the user during a defibrillation session, for example, the device can deliver the prompts in a language that may be most suitable for the present location of the device.
"These and other features and advantages of this description will become more readily apparent from the following Detailed Description, which proceeds with reference to the drawings, in which:
BRIEF DESCRIPTION OF THE DRAWINGS
"FIG. 1 is a diagram of a scene where an external defibrillator is used to save the life of a person according to embodiments.
"FIG. 2 is a table listing two main types of the external defibrillator shown in FIG. 1, and who they might be used by.
"FIG. 3 is a functional block diagram showing components of an external defibrillator, such as the one shown in FIG. 1, which is made according to embodiments.
"FIG. 4 is a functional block diagram showing components of another external defibrillator, such as the one shown in FIG. 1, which is made according to certain embodiments.
"FIG. 5 is a functional block diagram showing components of another external defibrillator, such as the one shown in FIG. 1, which is made according to certain embodiments.
"FIG. 6A is a diagram showing an external defibrillator prompting a user to provide an indication of the present locale according to embodiments.
"FIG. 6B is a diagram showing the user of FIG. 6A providing an indication of the present locale to the external defibrillator according to embodiments.
"FIG. 6C is a diagram showing the external defibrillator of FIG. 6B prompting the user to provide a confirmation of a particular language according to embodiments.
"FIG. 6D is a diagram showing the user of FIG. 6C providing a confirmation of the language to the external defibrillator according to embodiments.
"FIG. 7A is a diagram showing a user crying out for help in the vicinity of an external defibrillator according to embodiments.
"FIG. 7B is a diagram showing the external defibrillator of FIG. 7A prompting the user to provide a confirmation of a determined present locale according to embodiments.
"FIG. 7C is a diagram showing the user of FIG. 7B providing a confirmation of the present locale to the external defibrillator according to embodiments.
"FIG. 7D is a diagram showing the external defibrillator of FIG. 7C beginning to provide the user with instructions for using the external defibrillator according to embodiments.
"FIG. 8 is a flowchart for illustrating methods of an external defibrillator delivering prompts in accordance with a selected protocol according to embodiments.
"FIG. 9 is a flowchart for illustrating methods of an external defibrillator setting a protocol based on a determination of the present locale according to embodiments.
"FIG. 10 is a flowchart for illustrating methods of an external defibrillator switching away from a current protocol for user prompts according to embodiments."
For additional information on this patent application, see: Abbenhouse, Martin; Christie, David R.; Smith, Mitchell A.; Perreault,
Keywords for this news article include: Surgery, Therapy, Arrhythmia, Cardiology, Cardio Device, Cardiac Arrest, Medical Devices,
Our reports deliver fact-based news of research and discoveries from around the world. Copyright 2014, NewsRx LLC
Most Popular Stories
- Crimean Referendum Violates International Law: Obama
- Justin Bieber Loses Cool Over Selena Gomez
- Social Media Can Help a Company's Credit Line
- Fuentes Makes NAHREP's Top 10 List
- Hispanic Unemployment Eased in February
- Juanes Back to Singing About Love
- Boeing Freezes Nonunion Workers' Pensions
- Alfredo Ramos Martínez, Mexican Muralist, Symposium at Scripps
- 2 Million Long-term Jobless Have No Benefits
- Darrell Issa Apologizes to Elijah Cummings