摘要:
Methods and devices for a miniature, ultra-low power impact recorder for detecting, quantifying and recording the energy of an explosive blast or ballistic projectile impact. In one embodiment, the impact recorder can included a sensor comprised of an array of electromechanical resonators that is sensitive to the vibrations produced in selected, discrete frequency ranges that approximate the spectral signature characteristics of the shockwave resulting from the ballistic impact event, even after traveling through impacted material or body tissues.
摘要:
A system comprising a housing containing a signal generator coupled to an antenna and a dielectric material disposed about the antenna. The device is adapted to generate and direct a plurality of signals towards the heart of the person and measure a magnitude of a signal returned from the heart. The device further comprises a processor to compare differences between a magnitude of a signal propagated and the magnitude of the signal returned off the heart and determine a signal frequency having a maximum return loss value based on those differences. The processor also estimates a change in the amplitude of motion of a portion of a wall of the heart based on the differences between the magnitude of the signal propagated by the device and the magnitude of the signal returned off of the portion of the heart.
摘要:
A hydratable iontophoretic bioelectrode includes a plurality of layers of material capable of absorbing and holding an ionized fluid when placed in contact with the fluid. Adjacent layers are maintained at least partially out of contact from one another by disposition between the layers of spacing elements such as sugar or other dissolvable particles or cellulose. The edges of the layers may be crimped to maintain the layers in a stack for assembly with an electrode sheet; such a sheet would be provided for receiving an electrical current to thereby produce an electric field and cause a migration of ions of the ionized fluid away from the electrode sheet and into the skin or tissue of a person or animal against which the bioelectrode is placed.
摘要:
A system for remotely monitoring personnel status includes a plurality of sensors disposable on a soldier or other person for developing signals which may be used to determine the physiologicalal status. The sensors communicate with a soldier unit which can process the information to ensure that the sensor data falls within acceptable ranges and communicate with remote monitors. The soldier unit also includes a global positioning system. By using the sensor data and the global positioning system, leaders and medics can quickly and accurately track and treat casualties in battle. The system enables more rapid location of the casualty, as well as remote triage/initial diagnosis, thereby assuring that those who are most in need of treatment are attended to first. Typically, the system monitors both body surface and ambient temperature, heart rate, shivering, motion status and body condition. Additional sensors can be provided to supply information on other physiologicalal parameter which may be desired for more thorough diagnosis. The physiologicalal information may be stored and kept with the soldier to enable improved care as the soldier is moved to higher levels of care.
摘要:
An automated injection module is comprised of a housing, a piston drug capsule disposed within the housing, a piston core including a puncture seal membrane defining a reservoir for holding a drug between the puncture seal membrane and the piston drug capsule, an injection device having at least one sharp end for puncturing the puncture seal upon activation of the device, an end cap on a distal end of the housing, and a pressure source on a proximal end of the housing. The pressure source is preferably a propellant that ignites and forces the piston toward the distal end. Substantially simultaneously, the injection device pierces the puncture seal membrane, the piston core is forced into the piston drug capsule, and the drug is evacuated from the reservoir through the injection device and into a patient.
摘要:
A low-profile multipathway automatic drug delivery system utilizing a battery powered control pad coupled to a disposable drug storage and delivery system and strapped to a patient's limb or torso. A preprogrammed or on-demand drug administration sequence is input to the control pad. When a drug is to be administered, the control pad ignites a high energy density propellant charge in the drug delivery system. Expanding propellant gas exerts pressure on a drug in a second chamber and forces it from the storage reservoir. Depending upon the type of drug delivery system required for the drug being administered, the propellant will either: (i) force a hypodermic needle into a patient's muscle tissue, propel the drug in the storage container into the needle embedded in the patient, and withdraw the needle; (ii) force the drug from the storage container through a jet nozzle where the drug is injected into subcutaneous tissue; (iii) force the drug from the storage container into a patch for passive transdermal delivery; (iv) force the drug into a patch for iontophoretic transdermal diffusion; or (v) force together two drugs stored separately that are unstable when mixed, and then administer them through one of the methods described in steps (i) to (iv).
摘要:
Methods and apparatus for administering known quantities of medicaments by iontophoresis, while avoiding burns caused by extremes in the pH of the medicament medium during passage of an electric current, are disclosed. It is known that as iontophoresis progresses in conventional iontophoresis systems, the electrolysis of water occurs to produce hydrogen or hydroxyl ions at the interface of the electrode and medicament medium. Since these ions are highly mobile, they are transported directly into the skin of a patient in preference to the larger medicament ions. Thus, extreme changes in pH are experienced which result in burns due to the acidification or alkalinization of the medicament medium and passage of electric current through the skin. In addition, the efficiency of iontophoresis decreases over time. The present invention avoids extremes in pH by removing the hydrogen or hydroxyl ions which are created during iontophoresis and creates conditions for constant delivery over prolonged periods of time.In the present invention, the medicament medium adjacent the patient is periodically or constantly replaced by adding fresh medicament medium which is at the original pH. The present invention also discloses a flow-through electrode which allows new solution to constantly flow into the iontophoresis area.
摘要:
A system comprising a housing containing a signal generator coupled to an antenna and a dielectric material disposed about the antenna. The device is adapted to generate and direct a plurality of signals towards the heart of the person and measure a magnitude of a signal returned from the heart. The device further comprises a processor to compare differences between a magnitude of a signal propagated and the magnitude of the signal returned off the heart and determine a signal frequency having a maximum return loss value based on those differences. The processor also estimates a change in the amplitude of motion of a portion of a wall of the heart based on the differences between the magnitude of the signal propagated by the device and the magnitude of the signal returned off of the portion of the heart.
摘要:
Techniques for control of fluid delivery from a fluid reservoir by a medical infusion pump are described. Setting of at least one electronically-controllable pumping parameter is determined by the use of one or more mechanical keys. The mechanical key actuates one or more electronic switches of a mechanical key receptacle coupled to the medical infusion pump. The electronic switches are coupled to the medical infusion pump to control the at least one electronically-controllable pumping parameter. Keys can be differently configured to actuate different switches corresponding to particular settings and can include display indicia showing the particular parameter value set by the key.
摘要:
A drug administration system configured to administer a drug to a user's ear includes a housing, sized and shaped to substantially fit behind the user's ear, and configured to pump the drug in controlled amounts to the user's middle ear. A drug reservoir is disposed in the housing and includes a drug configured to treat an inner ear condition. A catheter is operatively coupled to the drug reservoir and is sized and shaped to extend from the drug administration unit into the user's middle ear.