US20140303507A1 - External defibrillator with power and battery sharing capabilities with a pod - Google Patents
External defibrillator with power and battery sharing capabilities with a pod Download PDFInfo
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- US20140303507A1 US20140303507A1 US14/310,841 US201414310841A US2014303507A1 US 20140303507 A1 US20140303507 A1 US 20140303507A1 US 201414310841 A US201414310841 A US 201414310841A US 2014303507 A1 US2014303507 A1 US 2014303507A1
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
- A61N1/39—Heart defibrillators
- A61N1/3904—External heart defibrillators [EHD]
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/01—Measuring temperature of body parts ; Diagnostic temperature sensing, e.g. for malignant or inflamed tissue
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/024—Detecting, measuring or recording pulse rate or heart rate
- A61B5/02405—Determining heart rate variability
-
- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/08—Detecting, measuring or recording devices for evaluating the respiratory organs
- A61B5/083—Measuring rate of metabolism by using breath test, e.g. measuring rate of oxygen consumption
- A61B5/0836—Measuring rate of CO2 production
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/145—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue
- A61B5/14542—Measuring characteristics of blood in vivo, e.g. gas concentration, pH value; Measuring characteristics of body fluids or tissues, e.g. interstitial fluid, cerebral tissue for measuring blood gases
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/362—Heart stimulators
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/362—Heart stimulators
- A61N1/37—Monitoring; Protecting
- A61N1/3702—Physiological parameters
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
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- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
- A61N1/39—Heart defibrillators
- A61N1/3925—Monitoring; Protecting
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- A—HUMAN NECESSITIES
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- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
- A61N1/39—Heart defibrillators
- A61N1/3968—Constructional arrangements, e.g. casings
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
- A61N1/39—Heart defibrillators
- A61N1/3975—Power supply
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
- A61N1/39—Heart defibrillators
- A61N1/3987—Heart defibrillators characterised by the timing or triggering of the shock
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
- A61N1/39—Heart defibrillators
- A61N1/3993—User interfaces for automatic external defibrillators
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- H02J7/0054—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
- H02J7/342—The other DC source being a battery actively interacting with the first one, i.e. battery to battery charging
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B5/00—Measuring for diagnostic purposes; Identification of persons
- A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
- A61B5/021—Measuring pressure in heart or blood vessels
- A61B5/0215—Measuring pressure in heart or blood vessels by means inserted into the body
Abstract
Description
- This application is a continuation of co-pending U.S. patent application Ser. No. 10/583,175, filed on Nov. 1, 2007, which is a National Stage Entry of International PCT Application No. US2004/042376 titled “AN EXTERNAL DEFIBRILLATOR WITH POWER AND BATTERY SHARING CAPABILITIES WITH A POD,” filed on Dec. 17, 2004, which claims priority to International PCT Application No. US2004/012421 titled “Defibrillator/Monitor System Having a Pod with Leads Capable of Wirelessly Communicating,” filed on Apr. 22, 2004, which claims benefit of U.S. Provisional Application No. 60/464,860 titled “System of POD with leads and defibrillator monitor communicating wirelessly with each other,” filed Apr. 22, 2003, and to U.S. Provisional Application Ser. No. 60/530,151 titled “Defibrillator/Monitor System Having a Pod with Leads Capable of Wirelessly Communicating,” filed on Dec. 17, 2003, which are hereby incorporated by reference in their entirety.
- This disclosure is related to the following co-pending application entitled “DEFIBRILLATOR PATIENT MONITORING POD,” U.S. Publication No. 2008/0221397, filed 17 Dec. 2004, and U.S. Pat. No. 7,957,798 entitled “DEFIBRILLATOR/MONITOR SYSTEM HAVING A POD WITH LEADS CAPABLE OF WIRELESSLY COMMUNICATING,” filed 17 Dec. 2004 and issued 6 Jun. 2011, which are hereby incorporated by reference in their entirety and not admitted as prior art with respect to the present disclosure by its mention in this section.
- The invention relates to medical devices, and in particular, to defibrillation/monitor systems having a detachable pod with leads.
- Each day thousands of Americans are victims of cardiac emergencies. Cardiac emergencies typically strike without warning, oftentimes striking people with no history of heart disease. The most common cardiac emergency is sudden cardiac arrest (“SCA”). It is estimated more than 1000 people per day are victims of SCA in the United States alone.
- SCA occurs when the heart stops pumping blood. Usually SCA is due to abnormal electrical activity in the heart, resulting in an abnormal rhythm (arrhythmia). One such abnormal rhythm, ventricular fibrillation (VF), is caused by abnormal and very fast electrical activity in the heart. During VF the heart cannot pump blood effectively. Because blood may no longer be pumping effectively during VF, the chances of surviving decreases with time after the onset of the emergency. Brain damage can occur after the brain is deprived of oxygen for four to six minutes.
- Applying an electric shock to the patient's heart through the use of a defibrillator treats VF. The shock clears the heart of the abnormal electrical activity (in a process called “defibrillation”) by depolarizing a critical mass of myocardial cells to allow spontaneous organized myocardial depolarization to resume.
- Cardiac arrest is a life-threatening medical condition that may be treated with external defibrillation. External defibrillation includes applying electrodes to the patient's chest and delivering an electric shock to the patient to depolarize the patient's heart and restore normal sinus rhythm. The chance a patient's heart can be successfully defibrillated increases significantly if a defibrillation pulse is applied quickly.
- In a scenario where a paramedic is responding to an emergency call with a non-specific patient condition, for example, there has been a car accident. The paramedic will typically carry his or her own defibrillator/monitor, a gurney, and drug box, and other supplies considered essential. If, perhaps, the car has driven off an embankment, the paramedic will have a long distance to run with all this equipment. This slows the response time to a call where someone may be bleeding to death. Smaller lighter equipment is always demanded by paramedics to save them time and effort, and allow them to get to the scene earlier. For just this reason, some paramedics will opt to carry only an AED (Automatic External Defibrillator) to the scene, and move the patient into the ambulance as quickly as possible, where other, more advanced monitoring equipment is available. In some countries, this approach has been incorporated into standard operating protocols, where the ambulance carries both ALS (advanced life support) equipment (which typically would include a multi-parameter monitor and defibrillator) and an AED. This approach, while effectively giving the user the choice of equipment to carry, forces the paramedic to learn two different defibrillators. The approach also forces the paramedics to possibly transfer the patient from one machine to the other once in the ambulance. It also adds costs to the ambulance service and potentially causes lost data between the two defibrillators for critical minutes, which may negatively impact the ability of EP Lab (Electro-Physiology Lab) doctors to determine the original cardiac condition.
- Previous attempts to address the issue of product weight have done so by creating a manual defibrillator that separates from a patient monitor, or an AED, which separates from a single-channel patient monitor, or a manual defibrillator/pacemaker that separates from a 12-lead ECG monitor. These products suffer from limitations by the present standards, such as: limited capture of patient data, limited ability to monitor all necessary patient vital signs, and possible unreliability due to the nature of the electrical contacts between the two devices (e.g., dirt, mud; and damage to the case which could affect alignment of electrical contacts, thus preventing full functionality of the (devices when mated).
- Another problem arises when hospital personnel want to charge the batteries of the defibrillator/monitor, but don't want to have to place the unit in a docking station in order to charge the batteries. There also arises the issue of patient confidentiality, such as recently raised by the Federal HIPAA (Health Insurance Portability and Accountability Act) regulations, when identical looking patient monitors are accidentally swapped by users.
- A modular external defibrillator system in embodiments of the teachings may include one or more of the following features: (a) a base containing a defibrillator module to deliver a defibrillation shock to a patient, (b) a patient parameter monitoring pod connectable to a patient via patient lead cables to collect patient data, the patient data including at least one patient vital sign, (c) a power supply sharing link between the base and the pod, the pod receiving power from the base via the power sharing link, the pod being operable to collect patient data without receiving power from the base, and (d) an external battery charger, the battery charger interrogating the batteries to determine battery information used for battery charging, the battery information including at least one of charging voltage, charging current, and charge time.
- A modular external defibrillator system in embodiments of the teachings may include one or more of the following features: (a) a base containing a defibrillator module to deliver a defibrillation shock to a patient, (b) a patient parameter monitoring pod connectable to a patient via patient lead cables to collect patient data, the patient data including at least one patient vital sign, and (c) a power communications link between the base and the pod, the pod receiving power-on command signaling from the base via the power communications link, the pod being operable to power-on to a condition where the pod may collect patient data after receiving the power-on command signaling, the pod being operable to power-on without receiving the power-on command signaling.
- A modular external defibrillator system in embodiments of the teachings may include one or more of the following features: (a) a base containing a defibrillator module to deliver a defibrillation shock to a patient, (b) a patient parameter monitoring pod connectable to a patient via patient lead cables to collect patient data, the patient data including at least one patient vital sign, the. pod containing a battery operable to supply power for pod operation, (c) a battery power communications link between the base and the pod, the battery power communications link transferring pod battery information, the battery information including at least one of battery usage; battery charge status, battery charging information;
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FIG. 1 is a pictorial representation of an external defibrillator having a patient module with a defibrillator/monitor in an embodiment of the present teachings; -
FIG. 2 is an upper level pictorial representation of a patient module pod in an embodiment of the present teachings; -
FIG. 3 is an upper level pictorial representation of a defibrillator/monitor base in an embodiment of the present teachings; -
FIG. 4 is a schematic view of a patient module pod in an embodiment of the present teachings; -
FIG. 5 is a schematic view of a defibrillator/monitor base in an embodiment of the present teachings; -
FIG. 6 is a pictorial display of a patient module pod and a defibrillator/monitor base in a power sharing embodiment of the present invention; -
FIG. 7 is a schematic view of a defibrillator/monitor base providing battery charging control of a patient module pod in an embodiment of the present invention; -
FIG. 8 is a schematic view of a defibrillator/monitor base battery charging scheme in an embodiment of the present invention; -
FIG. 9 is a pictorial representation of a mating assembly having a tethered connector in an embodiment of the present teachings; -
FIG. 10 is a pictorial representation of a mating assembly having a tethered connector in an embodiment of the present teachings. - The following discussion is presented to enable a person skilled in the art to make and use the present teachings. Various modifications to the illustrated embodiments will be readily apparent to those skilled in the art, and the generic principles herein may be applied to other embodiments and applications without departing from the present teachings. Thus, the present teachings are not intended to be limited to embodiments shown, but are to be accorded the widest scope consistent with the principles and features disclosed herein. The following detailed description is to be read with reference to the figures, in which like elements in different figures have like reference numerals. The figures, which are not necessarily to scale, depict selected embodiments and are not intended to limit the scope of the present teachings. Skilled artisans will recognize the examples provided herein have many useful alternatives and fall within the scope of the present teachings.
- With reference to
FIG. 1 , a pictorial representation of an external defibrillator having a patient module with a defibrillator/monitor in an embodiment of the present teachings is shown.External defibrillator 10 is comprised of two components patient module (pod) 12 and defibrillator/monitor (base) 14, which communicate patient data (e.g., vital signs) and share common replaceable battery technology.Pod 12 generally rests withinbase 14, generally in the back ofbase 14. The operator, during an emergency, has the option of carryingbase 14 withpod 12 attached or simply carryingpod 12 to the emergency site. Sincepod 12 is smaller and lighter thanbase 14, generally it will be easier for the operator to simply carrypod 12. By carryingpod 12, the operator is free to carry more ALS equipment and not be slowed by the heavier and moreawkward base 14. -
Pod 12 connects to a patient viaseveral leads Pod 12 communicates the patient's vital signs either wirelessly or via an electrical connection to defibrillator monitor 14. The patient data or vital signs collected may include 3, 4, and 5 lead ECG readings, 12 lead ECG readings, non-invasive blood pressure (NIBP), pulse oximeter data, capnography data, invasive blood pressure, body temperature, C02 levels, and additional patient monitoring functions. Additionally,pod 12 may include a small display 82 (shown inFIG. 4 ) replicating some or all of the information such as waveforms, numerical data, and vital signs being transmitted tobase 14. -
Base 14 includes a therapy module 56 (FIG. 3 ) and therapy cables.Therapy module 56 has the capability to provide therapeutic functions such as pacing, defibrillation, or synchronous cardioversion without attaching another monitor/defibrillator to the patient. The therapy cables typically include patient paddles or electrodes that attach between the patient andbase 14 in order to deliver the therapy to the patient. Sincepod 12 connects to the patient and transmits vital signs tobase 14, then base 14 need not also have patient monitoring cables. Accordingly, paramedic mobility and ease of use are greatly increased.Therapy module 56 inbase 14 may be configurable in either an ALS mode or an AED mode. The ALS mode includes a multi-parameter monitoring capability and all of the defibrillator therapy delivery capability. Additionallybase unit 14 may be just an AED. - With reference to
FIG. 2 , an upper level pictorial representation of a patient module in an embodiment of the present teachings is shown. Generally,pod 12 uses replaceable orrechargeable batteries 16 for power and comprises any combination of the following features: 3, 4, and 5lead ECG inputs lead ECG inputs 20, non-invasive blood pressure (NIBP)input 22,pulse oximeter input 24, capnography input (not shown), invasiveblood pressure input 26,temperature input 28,C02 input 30, additional patient monitoring functions, transceiver 32 to transmit any or all real time patient data tobase 14. Transceiver 32 can be a wireless BlueTooth module commercially available from TDK, however, transceiver 32 can be any transceiver such as WiFi (802.11), Wireless WAN (CDMA, GSM, GPRS, UTMS, etc.), or a wired Fire-Wire (IEEE 1394) without departing from the spirit of the present teachings. Additionally,pod 12 may include a patient parameter display 33 replicating some or all of the information such as waveforms, numerical data, and vital signs being transmitted tobase 14. Additionally,pod 12 includes some means by which it can be attached tobase 14 for the purpose of carryingbase 14 to an emergency scene as is discussed in PCT Application Serial No. US04/12421. Additionally,pod 12 may have a feature allowing it to be easily secured to a gurney or hospital bed as is discussed in a patent application entitled “DEFIBRILLATOR PATIENT MONITORING POD,” U.S. Publication No. 2008/0221397, filed Dec. 17, 2004, herein incorporated by reference in its entirety. - With reference to
FIG. 3 , an upper level pictorial representation of a defibrillator/monitor in an embodiment of the present teachings is shown.Base 14 uses a replaceable orrechargeable battery 50 for power.Batteries batteries Batteries base 14 comprises adisplay 52 sufficient to show current and historical patient data, a transceiver (similar to transceiver 32 [not shown]) to send acquired patient data onto a receiving station or third party data receiver, amodule 56 to synchronize shocks and pacing pulses to the patient's intrinsic rhythm from data acquired by apod 12, an error checking andde-multiplexing module 54 receiving and processing data received frompod 12, and adata interpretation module 58 which analyzes data acquired bypod 12 and makes certain interpretive statements on the patient's cardiac or respiratory condition, displays vital sign trends, and provides additional functions found in ALS monitoring products. - With reference to
FIG. 4 , a schematic view of a patient monitor in an embodiment of the present teachings is shown. As discussed above,pod 12 can be powered from a removable/rechargeable battery 60.Power module 62 processes the incoming power into appropriate power levels for each of the internal components.Power module 62 routes the pod's power supply through main power anddata bus 64 tosystem controller module 66,patient parameter module 68, andoperator interface module 70. As discussed above,pod 12 can be used wirelessly, however, it is helpful ifpod 12 is directly connected through atethered cable 46 or through attachment to a connector to utilize the speed ofdata bus 64. - With reference to
FIGS. 9 and 10 , a pictorial representation of a mating assembly having a tethered connector in an embodiment of the present teachings is shown. In this embodiment, a pod similar to 12 rests withinslot 40 and connects to base-to-pod connector 42, which allowsbase 14 and a pod to communicate with each other. Base-to-pod connector 42 rests freely withinconnector cavity 44, which allowsconnector cable 46 to retractably exit and enterbase 14. Tetheredcable 46 allows a pod to mate with and rest withinbase 14 or mate withbase 14 when not docked withinslot 40. It is sometimes helpful thatbase 14 communicate with a pod through tetheredcable 46 since communications through a direct connection is generally faster. This is the case in the present embodiment asbase 14 is equipped with a high-speed bus, such as a USB bus, which provides quick communication of information between a pod andbase 14.Base 14 is also able to automatically detect when tetheredcable 46 is plugged in so direct communications can be established immediately. A direct communication between a pod andbase 14 can be established. This automatic establishment of direct communication between a pod andbase 14 includes when a pod is docked withinbase 14 and a connection is made between a pod andbase 14 throughconnector 42. - Generally
base 14 and a pod communicate wirelessly to assist in preventing the tangling of cables, which can occur between a patient andbase 14, particularly when transporting patients. Tetheredcable 46 provides a system for use when the wireless link betweenpod 12 andbase 14 fails for whatever reason or when precise signal synchronization demands a wired connection. Tetheredcable 46 also provides the added advantage in that the user cannot losecable 46 because it is tethered tobase 14. Wireless links can impose a delay in communication between a pod andbase 14 longer than may be experienced with a cable. When communications betweenbase 14 and a pod require a faster response time (such as application of synchronous cardioversion or pacing where information from a pod must be transmitted to base 14), the user is advised of the need to plugcable 46 into the pod or attachpod 12 tobase 14. The user is provided a user interface message to inform them of the need to attachcable 46. - With reference again to
FIG. 4 ,system controller module 66 controls interaction of all the pod's modules throughdata bus 64 and interaction withbase 14 through a wired connection, such as tetheredcable 46 or wireless (e.g., IrDA, RF, etc.)communication link 72 which would be transmitted by transceiver 32.System controller module 66 has the ability to encrypt data communicated over the wireless links to meet HIPAA requirements for the protection of patient data. There can be a single encryption key for all bases and pods. However, it is contemplated there could be a user defined encryption key that can be set at the base by an operator.Patient parameter module 68 monitors functions such as invasive blood pressure, patient's temperature, and inputs from the pod leads.Module 68 further collects inputs fromEtC02 module 74,NIBP module 76, andSpO2 module 78 throughOEM module 80.Patient parameter module 68 takes all of these inputs and processes them for display and can route only a limited number of inputs to smallLCD display module 82 throughoperator interface module 70.Patient Parameter Module 68 also has the ability to perform interpretation of clinical data and can make certain interpretive statements about the patient's condition (e.g., cardiac or respiratory health).Power module 62 provides on/off control to the pod, utilizing theremovable battery 60 as the power source.Operator Interface module 70 allows the operator to primarily interact withpod 12; however, it is contemplated that operator could use themodule 70 to interact withbase 14 as well. - With reference to
FIG. 5 , a schematic view of a defibrillator/monitor in an embodiment of the present teachings is shown.Base 14 is powered by a removable/rechargeable battery 84, which provides power topower module 86. Alternatively,base 14 could be powered byAC power supply 88 or DC power supply 93.Power module 86 processes the incoming power into appropriate powered levels for each of the internal components. -
Power module 86 also routes the base's power supply through main power anddata bus 90 to interconnectmodule 92,system controller module 94,therapy module 96, andoperator interface module 98.Interconnect module 92 is utilized to detect howpod 12 is connected to base 14 (wirelessly, docked, or tethered cable). Whenpod 12 is docked or tethered tobase 14,interconnect module 92 can route the power provided frompower module 86 to thepod 12. Additionally interconnectmodule 92, in conjunction withsystem controller 94, store all of the information about the associations that have been established between the base 12 andpod 14. Similar to system controller module 66 (inFIG. 4 ),system controller module 94 controls all interaction of all of the base's modules throughdata bus 90 and interaction withpod 12 through wired or wirelessconnection communication link 72 or throughdata bus 90 ifpod 12 is connected tobase 14.System controller module 94 andinterconnect module 92 have the ability to encrypt data communicated over the wireless links to meet HIP AA requirements for the protection of patient data.Therapy module 96 synchronizes shocks and pacing pulses to the patient's intrinsic rhythm from data acquired frompod 12.Module 96 administers shocks from voltages via thedefibrillation cap 100 and, in turn, administers pacing pulses to a patient.Operator interface module 98 allows the operator to primarily interact withbase 14; however, it is contemplated that the operator could use themodule 98 to interact withpod 12 as well. For example, patient demographic data (e.g., age, sex, height, weight) could be entered at thebase 14, and communicated to thepod 12 for use in interpretive algorithms performed insystem controller 66 withinpod 12.LCD module 102 allows the operator to view a patient's monitored parameters. Finally, the operator has the option to print out patient information on a printer 104 (e.g., a 100 mm strip chart printer). - With reference to
FIGS. 6 and 7 , a display of a patient module and a defibrillator/monitor in a power-sharing embodiment of the present invention is shown. In the present embodiment, and as stated above, bothpod 212 andbase 210 have separate but interchangeable batteries (not shown). In apreferred embodiment base 210 has 2 batteries each of which is interchangeable with the pod's battery. Generally, the extra battery is needed to provide the necessary energy for defibrillation therapy as well as providing energy topod 212 when necessary as will be discussed in more detail below. Generally, upon power up bothbase 210 andpod 212 power up on their respective batteries. Moreover,pod 212 will remain on its own battery power in order to conserve the base's battery sobase 210 will be able to provide defibrillation therapy to a patient when it is needed. In this situation the pod does not draw any power frompower bus 245. As discussed above,base 210 will quickly establish communications withpod 212 to determine ifpod 212 is docked instation 216, tethered bycable 214, or is remote using wireless communications as is discussed in U.S. Pat. No. 7,957,798 entitled “DEFIBRILLATOR/MONITOR SYSTEM HAVING A POD WITH LEADS CAP ABLE OF WIRELESSLY COMMUNICATING” filed Dec. 17, 2004 and issued Jun. 6, 2011 herein incorporated by reference in its entirety. Ifpod 212 is docked or tethered,base 210 may communicate topod 212 whetherbase 210 is connected to anexternal power source 218, detectable by the presence of power on power bus 287 (FIG. 8 ).External power source 218 could be an AC or DC power source or even an AC or DC power supply. Ifbase 210 is connected toexternal power source 218, the base would communicate topod 212 to quit using its own battery and instead receive external power throughbase 210 by way ofpower bus 245. Ifbase 210 is not connected toexternal power source 218, thenpod 212 will remain using the energy of its own battery until it reaches a “low power” state. Upon reaching the lower power state,pod 212 will request a power transfer frombase 210 throughcable 214. Upon the request,base 210 will transfer power throughcable 214 unlessbase 210 has reached a low power state. Ifbase 210 has reached a low power state, then base 210 will initiate an alarm informing the user that base 210 must be connected toexternal power source 218 orbase 210 andpod 212 batteries must be replaced. It is contemplated there could be more than one tethered cable, such as one cable providing patient and/or pod data and another cable providing power without departing from the spirit of the invention. It is further contemplated the low power state for the base would be a power state above which a defibrillation therapy could successfully be provided to a patient. It is further contemplated that while the base and pod were both operating on battery power, if the base were to encounter a low power state on its batteries while the pod had not encountered a low power state on its battery that power could be shared from the pod battery to the base throughpower bus 245. It is further contemplated that the pod could be powered solely from the base through the availability of power onpower bus 245 withoutpod battery 226 being present within the pod. It is further contemplated if the pod is remote from the base and communicating wirelessly and experienced a low power state, the pod would then sound an alarm and/or illuminate a visible indicator (e.g., LED or message on a display located on the pod) to the user informing the user the pod must be connected via the tethered cable or the pod must be docked so it can power share with the base. In an alternate embodiment, the low power state would be communicated wirelessly to the base whereby the base would sound an alarm and/or illuminate a visible indicator to the user informing the user the pod must be connected via the tethered cable or the pod must be docked so it can power share with the base. It is further contemplated that if the pod battery is easily replaced by the user, the low power state indication would prompt the user to replace the pod battery with a more full charged battery. - Generally, battery-charging control is maintained by a power module (not shown in
FIG. 6 ) located inbase 210. The power module is able to determine when a battery needs charging, how long the charging will take, and how much energy it will take to charge the battery. In the case of a regular “dumb” battery, the determination for these items can be made through examination of battery characteristics such as battery voltage, change in voltage, change m charge current drawn by the battery, and change in battery temperature. In an embodiment, the batteries inpod 212 andbase 210 are “smart” batteries. The power module is able to communicate withsmart batteries communication multiplexer 240 andcommunication buses note pod 212 does not necessarily have to have a power module comparable to the power module inbase 210. Instead of duplicating the circuitry of the power module inbase 210,pod 212 contains power-multiplexing circuitry, which allowspod 212 to interrogate its smart battery and relay this information to the power module or it allows the pod's smart battery to directly communicate with the power module. The power module would then directly interrogate the pod's smart battery and retrieve the necessary information for charging. Further, the power module is isolated from the rest of the base circuitry so it can charge the batteries even whenbase 210 is turned off. This reduces the amount of circuitry needing power during the charging process, thus conserving energy and increasing circuit reliability for the circuitry that is not powered on during the charging process. - With reference again to
FIG. 7 , a schematic view of a defibrillator/monitor providing battery charging control of a patient module in an embodiment of the present invention is shown. When docked or connected by a tethered cable,base 220 establishes several connections topod 228 throughcommunication bus 230,battery charging bus 246, andpower bus 245.Power bus 245 provides power topod 228 throughbase 220 whenbase 220 is connected to an external power source or whenpod 228 is in a “low power” state. In the present embodiment,base 220 is able to control the charging ofbatteries pod 228. As discussed above,communication bus 230 and chargingbus 246 allow base 220 to chargebatteries base 220, thus reducing the amount of circuitry needed. Ifbase 220 is connected to an external power source, power is transferred tobase 220 throughbattery lines Power microprocessor 238 is continually interrogatingbatteries communication multiplexer 240, to obtain vital battery information such as voltage and current parameters, battery's charge level, and a battery serial number.Microprocessor 238 then determines, which two of threebatteries base 220 has twoindependent power lines base 220 is able to charge two of the threebatteries module 232 could chargebatteries batteries base 220 is quickly provided with the energy to provide defibrillation therapy. It is further contemplated any one ofbatteries batteries - Once
processor 238 determines which two batteries need charging, power is routed through a switching matrix comprised ofswitches batteries battery charger bus 246 tobattery 226.Processor 238 controls which batteries will be charged throughpower multiplexer 239, which controls the switching matrix. Once a battery is fully charged,processor 238 then routes the power to the third and remaining battery in need of charging. Whenbatteries power base 220 andpod 228 throughpower bus 245. It is further contemplated that switches 242 and 244 would not be needed if the battery charging power provided throughbattery charger buses batteries - When
pod 228 is being used in a wireless mode,communication bus 248 is engaged bypower processor 249 to routebattery 226 information via signal processor 250. Once thepower processor 249 routes the information to signal processor 250, the signal processor 250 processes the battery information and transmits allbattery 226 information tobase 220. It is fully contemplatedprocessors Base 220 uses the battery information to monitor the charge onbattery 226 and displays this information on a monitor (not shown) as a fuel gauge, which is discussed in more detail below, so the user can easily monitor the status of the pod'sbattery 226.Base 220 also uses this information to initiate an alarm onbase 220 and/orpod 228 to alert the user the pod'sbattery 226 is depleted andpod 228 needs to be connected via a cable tobase 220 orpod 228 needs to be docked withbase 220 sobattery 226 can be charged. Generally,pod 228 is turned off when it is charging. Howeverbuses pod 228battery 226 can be recharged and be interrogated bybase 220 to monitor the charging process. It is further contemplated that pod battery charging can occur when the pod is operating and is powered by the base power throughpower bus 245. - With reference once again to
FIG. 7 , in an another embodiment there is a power on and power off interaction betweenbase 220 andpod 228. Ifbase 220 andpod 228 are in electrical contact either through a tethered cable or throughpod 228 being docked withbase 220, a user could press an on/off button (not shown) onbase 220 powering upbase 220 and a signal would be sent fromsystem control module 300 onsystem bus 302 topod 228 instructingpod 228 to power up. If the user then desired to power downbase 220, they would then press the on/off button onbase 220 powering downbase 220 and a signal would be sent fromsystem control module 300 onsystem bus 302 topod 228 instructingpod 228 to power down. In an alternative embodiment.pod 228 would be able to detect base 220 had powered up by power being transferred acrossbus 245 and thenpod 228 would power up itself. Upon power up ofbase 220,system control module 300 establishes the initial condition ofbase 220 andpod 228 and coordinates communication of all modules. Thecontrol module 300 then confirms with processor 250 throughcontrol bus 302 the pod's power situation (e.g.,pod 228 is running offbattery 226 or is receiving power frombase 220 through power bus 245) and the pod's current power management. - Similar to
base 220,pod 228 has an on/offbutton 225 where a user can press the button and turnpod 228 on or off. Ifpod 228 is docked withbase 220 andpod 228 is powered up,pod 228 will begin to interrogate communications withbase 220. If, after a period of minutes,pod 228 cannot establish communications withbase 220, thenpod 228 would assume powering up was inadvertent and turn itself off to conserve battery power. In another embodiment, the user would be able to power upbase 220 frompod 228 similar to powering uppod 228 frombase 220 discussed above.Pod 228 can also be powered up frombase 220 in a wireless mode. Ifpod 228 is remote frombase 220 and a user powers upbase 220,base 220 will determinepod 228 is not directly connected tobase 220 and then transmit an RF signature which when received bypod 228 would power uppod 228. In addition,pod 228 could be powered down frombase 220 as long aspod 228 is within transmitting range ofbase 220. If communications betweenpod 228 andbase 220 is lost,pod 228 will try to reestablish communications for a pre-determined amount of time. Ifpod 228 is unable to reestablish communications withbase 220, thenpod 228 will power itself down to conserve battery power. However, ifpod 228 came back within communication range ofbase 220, then the RF signature frombase 220 would power uppod 228 andbase 220 would begin reestablishing communications. It is further contemplated that the pod and base could swap roles in the previously described wireless on/off descriptions without departing from the spirit of the invention. - With reference to
FIG. 8 , a schematic view of a defibrillator/monitor battery-charging scheme in an embodiment of the present invention is shown.External adapter 262 provides battery-charging circuitry for chargingbatteries base 260.External adapter 262 can be a docking station or an adaptor. In this embodiment, the battery charging circuitry has been removed frombase 260 to reduce the cost ofbase 262 and to makebase 262 lighter.External adapter 262 can receive power input from anAC source 268 or aDC source 270 or both; however, both are not necessarily needed together to stay within the spirit of the invention. IfAC source 268 is utilized, the power is first filtered throughAC filter 272 and then converted to 10-16V DC byconverter 274. This voltage can then be routed topower module 276 where it is used topower base 260 and routed to boostconverter 280, which converts the power to 20V which is provided tobattery charging circuits DC source 270 is utilized, the power is filtered byDC filter 278 and routed topower module 276 where it is used topower base 260 and boostconverter 280 which converts the power to 20V which is provided tobattery charging circuits -
Communications bus 285 provides communication withpower processor 286, a pod battery (not shown) throughmultiplexer 288.Bus 285 further provides communication withpower processor 286 andbattery chargers bus multiplexer 290. Generally,bus 285 is an Inter-IC bus, however, it is fully contemplatedbus 285 could be any type of bus know to those with skill in the art without departing from the spirit of the invention. Throughcommunication bus 285power processor 286 provideschargers batteries Battery chargers power module 276, which then routes this power tobatteries battery circuit boards bus 285 allowsprocessor 286 to parametrically control the charging ofbatteries control signal 302 between the base 220 andpod 228 andcommunication bus 230 can be combined into a single bus without departing from the spirit of the invention. It is further contemplated that the power and communication buses could be combined into a single bus without departing from the spirit of the invention. In an alternate embodiment, the smart battery information could be communicated from thepod battery 226 to thepod power controller 249 and then communicated to thebase power processor 238 via thecommunication bus 230. - Thus, embodiments of the AN EXTERNAL DEFIBRILLATOR WITH POWER AND BATTERY SHARING CAPABILITIES WITH A POD are disclosed. One skilled in the art will appreciate that the present teachings can be practiced with embodiments other than those disclosed. The disclosed embodiments are presented for purposes of illustration and not limitation, and the present teachings are limited only by the claims that follow.
Claims (20)
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US20160361556A1 (en) | 2016-12-15 |
US20110208259A1 (en) | 2011-08-25 |
US7957798B2 (en) | 2011-06-07 |
US8738128B2 (en) | 2014-05-27 |
US20150018894A1 (en) | 2015-01-15 |
US20180214705A1 (en) | 2018-08-02 |
US8880168B2 (en) | 2014-11-04 |
US20130331899A1 (en) | 2013-12-12 |
US9439572B2 (en) | 2016-09-13 |
US10124184B2 (en) | 2018-11-13 |
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