摘要:
This invention relates generally to monitoring systems and more particularly concerns devices and systems used to monitor patients the presence and absence of a patient from a bed, chair, etc. The preferred environment in which the instant invention would be used would be a hospital or other care giving facility, wherein patients who are at risk of falling might left unattended while they are seated or lying. According to a first aspect of the instant invention, a microprocessor-based patient monitor is disclosed which includes a loudspeaker that emits alarms synthesized by the microprocessor. The microprocessor synthesizes any one of multiple alarm sounds under software control and activates and deactivates the alarm in response to the electronic signals received from an attached sensor and a user interface.
摘要:
This invention relates generally to monitoring systems and more particularly concerns devices and systems used to monitor patients lying in hospital beds or in other care giving environments. According to a first aspect of the instant invention, a microprocessor based patient monitor is disclosed which includes a loudspeaker driven by a power amplifier responsive to an input signal derived from a programmable volume control. The microprocessor synthesizes any one of multiple alarm sounds under software control, operates the programmable volume control of the alarm system and activates and deactivates the alarm in response to the electronic signals received from the sensor and a user interface. An electrically erasable programmable read-only memory accessible by the processor stores data which can be modified to tailor the operations of the monitor to suit a variety of different needs. According to still another aspect of the instant invention, a microprocessor-based patient monitor is disclosed which has a personality that is defined by software that is resident in modifiable nonvolatile memory, which software can thus be altered to change the programmed responses of the monitor. Finally, a software and hardware system is provided for reading information from and writing information to modifiable nonvolatile RAM within a microprocessor-based patient monitor. This information might be parameter settings, data values, or computer instructions.
摘要:
This invention relates generally to monitoring systems and more particularly concerns devices and systems used to monitor bed patients in hospital or other care-giving environments. In accordance with a first aspect of the instant invention, there is provided a binary switch-type device (e.g., a “mat”) for use in patient monitoring situations which contains, in addition to a conventional patient detection circuit, identification circuitry that can be sensed by an attached electronic monitor. The identification circuitry can be sensed by the electronic monitor and is designed to be configured to serve many different purposes, including, by way of example only, identification of the type of mat attached thereto, detection of connectivity problems, tracking mat usage time, and identifying mats that are nearing the end of their useful lives.
摘要:
In accordance with a first preferred aspect of the instant invention, there is provided a patient monitor that is automatically disabled when a caregiver enters a room and then is automatically reactivated after the caregiver leaves. According to a first preferred embodiment, it will remain disabled during the time the caregiver is proximate to the patient/monitor and then will automatically reactivate after the caregiver has moved away.
摘要:
There is provided herein a sensor for use in patient monitoring situations, wherein the level of patient motion activity is tracked for purposes of determining whether or not that patient has exhibited sufficient activity to merit eliminating a scheduled assisted relocation to a new position. The instant device broadly operates to sense the length of time since a patient has last moved from a previous sitting or lying position. If the patient has not moved during some predetermined time interval, it is preferred that the nursing staff be notified that it is time to manually reposition the patient. On the other hand, if the patient has changed position within the specified time period, the device will note that fact and inform the attending nurse or other caregiver that the patient need not be moved at the next scheduled relocation, thereby eliminating the need in some cases to rouse the patient from an otherwise sound sleep. In either case, the instant invention operates to reduce the risk that a patient will develop bed sores by helping ensure that the patient is manually moved as frequently as is medically necessary, but no more often than is actually necessary.
摘要:
A patient temperature monitoring system is provided herein that takes the form of an electronic patient monitor that is used in conjunction with a thermocouple sensor that has been printed or otherwise placed on a flexible surface such as a mat. The thermocouple sensor that is taught herein is more comfortable for the patient, more reliable, and can be manufactured with less cost than has heretofore been possible. According to a preferred embodiment, a finely powdered metal ink containing, for example, iron will first be silk screened onto a substrate. Then a second metal ink will be screened onto the same substrate so as to intersect the first, the second metal being preferably being some combination of nickel and copper, the first and second metal inks being chosen to form a thermocouple.
摘要:
There is provided herein a sensor for determining relative displacement between two surfaces which utilizes two optically conductive members that have been mounted in proximity to each other, whereby the amount of displacement between the two surfaces may be determined by measurement of the magnitude of the intensity of light transmitted through them. The instant invention preferably utilizes two planar light transmitting surfaces—an emitter and a receiver—which are free to move laterally with respect to each other and are positioned so that when light is introduced into the emitter some proportion of that light falls on the receiver. By electronically monitoring the intensity of light impinging on the receiver an estimate of the amount of overlap between the two optical surfaces and, thus, an estimate of the relative displacement between them, may be obtained.
摘要:
This invention relates generally to patient monitoring systems and more particularly concerns devices and systems used to monitor bed patients in hospital or other care-giving environments. In accordance with a first aspect of the instant invention, there is provided a wetness detector for use in patient monitoring situations and which is adjustable in its degree of sensitivity to wetness. It contains at least two conductive regions placed on a non-conductive base and which are preferably separated laterally by some distance. Isolated electrical leads are attached to each conductive region. Electrical current passes much more readily between the two conductive regions when an electrolytic solution such as urine is present within the switch, thereby making it possible for a separate electronic monitor to determine when wetness is detected.
摘要:
Disclosed is piezoelectric bender for use as an acoustic generating device. The acoustic generating device includes a piezoelectric material, a metal diaphragm, an electric circuit and mounting devices. The metal diaphragm is affixed to the piezoelectric material and has a nodal fulcrum at the nodal ring. The electric circuit is connected to the piezoelectric material and electrically activates the piezoelectric material. The mounting devices are constructed of insulating material and are positioned at the top and bottom of the metal diaphragm. The mounting devices support the metal diaphragm at the nodal fulcrum with an adhesive to resist impact damage.
摘要:
There is provided herein an electronic patient monitor that utilizes a latch or similar power circuit that automatically activates an electronic patient monitor when a patient's presence is indicated by the sensor, that maintains power to the unit so long as the patient is indicated to be present, and that maintains power to the monitor until a valid reset command is issued after the patient is sensed to be no longer present. Power to the unit is maintained, and the unit continues to monitor the patient, e so long as the patient is present, even if an attempt is made to power down/disable the unit during that time.