Abstract: Apparatus and methods for detecting onset of cardiac arrest utilizing a perfusion monitor. Detecting cardiac arrest comprises transmitting a signal toward a user to interact with the skin of the user, receiving a reflection of the signal, generating a photoplethysmogram, and processing the photoplethysmogram to detect whether the user is experiencing cardiac arrest.

Abstract: Apparatus and methods for detecting onset of cardiac arrest utilizing a perfusion monitor. Detecting cardiac arrest comprises transmitting a signal toward a user to interact with the skin of the user, receiving a reflection of the signal, generating a photoplethysmogram, and processing the photoplethysmogram to detect whether the user is experiencing cardiac arrest.

Abstract: Apparatus and methods for detecting onset of cardiac arrest utilizing a perfusion monitor. Detecting cardiac arrest comprises transmitting a signal toward a user to interact with the skin of the user, receiving a reflection of the signal, generating a photoplethysmogram, and processing the photoplethysmogram to detect whether the user is experiencing cardiac arrest.

Abstract: A stimulation device that stimulates living tissue includes an energy harvesting circuit that receives an output signal from another device and that powers the stimulation device, immediately or otherwise, using the output signal. The stimulation devices also includes a stimulation circuit that generates a stimulation signal to elicit a predetermined response from the living tissue, and at least one lead that delivers the stimulation signal to the living tissue.

Abstract: Apparatus and methods for detecting onset of cardiac arrest utilizing a perfusion monitor. Detecting cardiac arrest comprises transmitting a signal toward a user to interact with the skin of the user, receiving a reflection of the signal, generating a photoplethysmogram, and processing the photoplethysmogram to detect whether the user is experiencing cardiac arrest.

Abstract: A stimulation device that stimulates living tissue includes an energy harvesting circuit that receives an output signal from another device and that powers the stimulation device, immediately or otherwise, using the output signal. The stimulation devices also includes a stimulation circuit that generates a stimulation signal to elicit a predetermined response from the living tissue, and at least one lead that delivers the stimulation signal to the living tissue.

Abstract: Articles having porous or foam-like elements are provided. The design, fabrication and structures of the articles exploit properties of reactive composite materials (RCM) and their reaction products. In particular, fluids generated by reacting RCM are utilized to create or fill voids in the porous or foam-like elements.

Abstract: Modified red blood cells are described. In an embodiment, the modified red blood cell includes a target-binding agent. Targeted delivery of imaging agents, drugs, and peptide and protein pharmaceuticals using modified red blood cells are described. Processes for preparing the modified red blood cells, pharmaceutical and diagnostic compositions containing the same and methods of diagnosis and treatment involving the modified red blood cells are described.

Abstract: Modified red blood cells are described. In an embodiment, the modified red blood cell includes a target-binding agent. Targeted delivery of imaging agents, drugs, and peptide and protein pharmaceuticals using modified red blood cells are described. Processes for preparing the modified red blood cells, pharmaceutical and diagnostic compositions containing the same and methods of diagnosis and treatment involving the modified red blood cells are described.

Abstract: Articles having porous or foam-like elements are provided. The design, fabrication and structures of the articles exploit properties of reactive composite materials (RCM) and their reaction products. In particular, fluids generated by reacting RCM are utilized to create or fill voids in the porous or foam-like elements.

Abstract: Articles having porous or foam-like elements are provided. The design, fabrication and structures of the articles exploit properties of reactive composite materials (RCM) and their reaction products. In particular, fluids generated by reacting RCM are utilized to create or fill voids in the porous or foam-like elements.

Abstract: Modified red blood cells are described. In an embodiment, the modified red blood cell includes a target-binding agent. Targeted delivery of imaging agents, drugs, and peptide and protein pharmaceuticals using modified red blood cells are described. Processes for preparing the modified red blood cells, pharmaceutical and diagnostic compositions containing the same and methods of diagnosis and treatment involving the modified red blood cells are described.

Abstract: Modified red blood cells are described. In an embodiment, the modified red blood cell includes a target-binding agent. Targeted delivery of imaging agents, drugs, and peptide and protein pharmaceuticals using modified red blood cells are described. Processes for preparing the modified red blood cells, pharmaceutical and diagnostic compositions containing the same and methods of diagnosis and treatment involving the modified red blood cells are described.

Abstract: Modified red blood cells are described. In an embodiment, the modified red blood cell includes a target-binding agent. Targeted delivery of imaging agents, drugs, and peptide and protein pharmaceuticals using modified red blood cells are described. Processes for preparing the modified red blood cells, pharmaceutical and diagnostic compositions containing the same and methods of diagnosis and treatment involving the modified red blood cells are described.

Abstract: Modified red blood cells are described. In an embodiment, the modified red blood cell includes a target-binding agent. Targeted delivery of imaging agents, drugs, and peptide and protein pharmaceuticals using modified red blood cells are described. Processes for preparing the modified red blood cells, pharmaceutical and diagnostic compositions containing the same and methods of diagnosis and treatment involving the modified red blood cells are described.

Abstract: A defibrillation system having a physiological parameter measuring device for measuring parameters that may indicate a need for a defibrillator; an emergency level detector in communication with the physiological parameter measuring device for detecting emergency level physiological parameters; and a notification device in communication with the emergency level detector for providing notice of the detection of an emergency-level physiological parameter to a caregiver who can then utilize a defibrillator.

Abstract: A system for monitoring the heart of a patient. The system is comprised of a remote station having a device for generating an electrocardiogram of the patient, a device for detecting predetermined cardiological events in the patient in communication with the generating device and a transmitter for transmitting the electrocardiogram. The system also is comprised of a central station in continuous communication with the transmitter for receiving the transmitted electrocardiogram when a predetermined cardiological event occurs. There is also a database in communication with the central station for storing patient data and providing patient data to the central station. Additionally, there is a display device in communication with the central station and the database for displaying the patient data and the transmitted electrocardiogram. A method of monitoring the heart of a patient. The method includes the first step of taking an electrocardiogram of a patient at a remote station.

Abstract: The present invention pertains to a system for monitoring the health condition of a patient, such as the condition of the patient's heart. The system comprises a patient station having means for monitoring a predetermined bodily function of the patient and a patient transmitter for transmitting information relating to the bodily function. The system is also comprised of a secondary system remote from the patient at the patient station having means for activating the patient station such that information relating to the monitored bodily function can be transmitted from the patient station to the secondary station. The secondary station is in communication with the patient station. The present invention also pertains to a method of monitoring the health condition of a patient. The method comprises the steps of providing the patient with a device for monitoring a predetermined bodily function of the patient at a patient station.

Abstract: A method and apparatus for processing electrical signals by modifying delta modulation to discrete slope delta modulation includes converting its electrical signals into compressed digital information, and representing this digital information as a sequence of slops or deltas added to the past value of the representation. For each sample period, a slope is chosen from slope tables having multiple entries and each choice is represented by a Huffman code. Signal compression occurs in two steps: first the selection of a small number of possible slopes provides compression and also the most probable slopes are represented by the shortest Huffman codes providing additional compression. Depending on the history of the slope chosen, multiple tables can be accessed with different slop entries. Two check point values are provided which code absolute output levels instead of slopes in order to facilitate recovery of the signal in the event of transmission errors.

Abstract: A control system for an angiographic injector which precisely regulates the speed of a motor used to expel contrast media from a syringe. The control system is centered around a microprocessor which receives commands from the operator via a keyboard, and then regulates the speed of the motor by supplying drive command pulses to a circuit which integrates the difference in frequency between the command pulses and another pulse train whose frequency is proportional to actual motor speed. The control system also includes a velocity loop which uses the motor back EMF to supply an analog voltage also proportional to motor speed to a difference amplifier in a conventional velocity loop. The system is a dual loop controller where the second loop provides approximate speed control, while the first loop provides a "velocity correction" voltage required to bring the system to zero steady state speed error.