Ultrasound probe overhaul cycle, how long to overhaul better

BB's Probe Probe Probe Principle Maintenance Construction Blood Brain Barrier Probe Probe Selling Price Ultrasound imaging technology is currently used in hospitals for daily medical testing. BB heartbeat ultrasound as an important core component of the diagnostic probe, the price is generally close to half of the total price B meters, so the repair and B equipment maintenance to ensure a higher value of normal use. This article describes the principles of B meters and probes, the basis for analyzing the causes of failures and repairs such as crystal failures, failed lenses, burned out sheath damage, case damage, cable leaks and circuit boards. B probe failure is common, leading to failure, and will be due to a variety of reasons, summarized in no more than the following ways: (1) the natural loss of the probe itself. This is because the probe in its use of life for a certain period of use, there may be aging, deterioration, insulation and mechanical wear and degradation of phenomena such as even serious failures, leakage and so on resulting in failure. (2) The probe is used in a poor environment. Mainly temperature, humidity, corrosive gases and dust, strong vibration of the probe, power supply voltage fluctuations are too large, which may lead to equipment failure. (3) Human error. Engineers and users do not have a strong sense of responsibility, can not detect the maintenance and repair of the probe, abuse and other reasons take time. 2.1 Component failure rate investigation cause, b probe we have problems in the probe, maintenance based on experience, quartz crystal failure, lens failure, sheath damage, shell damage, cable leakage and circuit board burned out, maintenance, inspection of this repair in several areas. The component failures and causes of failure, such as Table 1, frequency. Table 1 b in the probe and component failure rate (times / 100 times) causes we can see from Table 1, the focus of the probe leakage cable damage, shell damage and damage to several aspects of the jacket, and damage to these areas for too long, mainly due to the use of the operator or improper use of the probe in the outside world influence and damage. Quartz crystal failure is mainly due to operators careless use of hard objects on the probe, so that the probe cracked, chipped or broken coupling agent is not utilized, large long-term probe damage, serious blistering surface use, will make the probe, cracking. Lens failure is mainly due to long-term use of natural wear and tear, scratches, cracks, corrosion, debonding, blistering or external collision damage. When the operator is not properly installed or removed, improper operation of the probe and switch will cause the circuit board burned out.2.2 Repairing damaged ? s cable B probe cable is used high multi-core shielded cable quality requirements are very high, the work is very fine, tight wire cable inside, there are hundreds of like hair thickness. Due to the multi-faceted exploration, using cable bending, twisting of the cable protected area of the broken skin, fracture of the outer insulation, exposing the signal line, shielding damage, fracture, the image will interfere with the ripples and defects on the inside. Symptoms: a hospital B HP SONOS5500, has been used for more than 7 years, last June appeared to seriously interfere with the image display, the full screen of the small snow dot display, the light flashes strong, can not adjust the brightness. Analysis and repair: due to external influences or operational errors, resulting in the failure of the inner conductor cable long-term status of the probe placed improperly using the probe. Open the outer layer of skin, the total level of the shield will be dissected, pick quiet fracture line, welding is completed, wrapped with a layer of transparent tape with a 1k? multimeter to measure the range whether to open, open, this rotating shielding wires are connected, and wrapped around a good tape. If more than one fault, the above method. Test machine, everything is normal after the total shielding welding wire outermost layer is good, tape fixed by high voltage, more raised for a year holster outer edge with good, no more failures. 2.3 Maintenance of crystal damage symptoms: a long time, but a good one Luoka SSD-620 black and white ultrasound quality used in hospitals, the image detected in a black shadow and mixed interference fringes. Analysis and Maintenance: Most of the ultrasound probe is used in the internal piezoelectric crystal, resulting after a long period of natural aging using the crystal, non-standard or decline when used to hit the touch and other external forces can cause damage to the detection crystal, crystal damage, B-detector detection image signal attenuation occurs when the shadow image, black bars, interference, such as the blind spot shortcomings, as well as the serious image of the blindness, which will lead to the doctor can no diagnose the quality of the diagnosis. Such a failure is the result of a shorted B-probe being a chip. Short-circuiting a chip By measuring the supply voltage to determine whether the chip or chipset with a lower supply voltage than the other chips, you can decide whether the chip or chips in the chipset is short-circuiting. The corresponding chip or chipset manufacturing probe back to its previous characteristics, replacement, interference disappears. Troubleshooting 2.4 Lens Symptoms: Luoka another hospital SSD?-620 black and white ultrasound, the vertical filament shows an image. Vertical filament squeezed by hand in the probe, greatly reducing the vertical filament, the same type of preliminary judgment, the acoustic lens layer with matching layer vertical probe missing filament replacement may be degumming. Analysis and maintenance: B probe acoustic lens is top after long-term use of the body's gelatinous substances professional contact can cause acoustic lens wear, scratches, cracks, corrosion, degumming, blistering and other losses, especially due to the coupling of the water agent lower corrosion caused by not only cause artifacts such as blind spots in the doctor's misdiagnosis, serious injuries or lead to the crystal of the B-probe leakage, endangering the patient's body, bringing injury to both the patient and the Machines. Nanjing, into the production office and degumming bubble out of liquid silicone rubber 704 under the same force probe side by side to relax the control within 24 hours after the gauze, the fault disappeared, and return to normal use of the probe. Proof that the fault is matched with the acoustic lens layer and the layer between the debonding caused. With this troubleshooting, liquid silicone rubber exploration and repair material layer acoustic lens and matching layer between the adhesive material acoustic lens use proved to be effective.2.5 Jacket, shell and circuit board repair damaged repair BB heartbeat, probe probe sheath and from the capsule role to enhance the cable connection, B-type probe sheath important role is to prevent the cable right-angled double pressure. Prolonged use will lead to cracking, peeling and loss of the sheath, which will lead to cable breakage and affect the image. B probe due to long-term use will lead to shell cracking aging, or due to such as throwing, hitting and deformation, when the shielding shell destroyed by the detection of the image quality will cause interference, unclear, serious cases will occur due to the human factor in front of the induced current, endangering the patient's body. Please note that the B-probe is the core component of the B-machine and is very expensive, the machine itself must be troubleshot and the sensor malfunctioned before deciding to open the investigation. Since the B - probe is frequently used, the maintenance response from a passive high failure rate to a proactive, regular maintenance can detect and deal with failures in the embryonic stage [3]. In the usual use, should pay attention to the following points: plugs from the host probe, the first should be host power cut off, use gently, not hard pull or increase cable discount, do not hit, drop, collision, give them a qualified coupling agent, do not use corrosive or self-coupling agent; after the use of a soft cloth or soft paper to use each probe probe clean, not with water or organic solvents scrubbing, so as not to internal circuitry probe water or damage; probe protection box should be kept dry and clean, the living room to maintain a certain temperature and humidity, good ground and stable AC power supply.3. Discussion 3.1 Maintenance is a combination of theory and practice. As a professional maintenance engineers and technicians, not only familiar with the B - mechanical plant, but also with the probe to familiarize with the role of each component, and with the relationship between the various components of the probe? Familiar with the relationship. Do not be intimidated by different manufacturers, probing (without seeing the probe) different types of intimidation, because the B-machine engineering the same, are intended to explore the phase structure. Ultra instrumentation in relation to the combination of circuit analysis of the cause and possible damage to the equipment caused by the symptoms based on the mastery of the basic principles of B, even in the absence of drawings of the circuit, based on the information provided by the machine's self-testing as a clue to determine the location of the probe based on the close connection between the various components of the inspection speculation to determine the location and the cause of the failure. Some of the inspection methods are available for the most common resistance measurements, current measurements, voltage measurements, waveform measurements, component substitutions and signal tracing [3], when the repair can not ignore any of the details.3.2 Indexing The adjustment of the maintenance process is the last part of the process. A maintenance process is generally divided into five parts: understanding the fault, fault analysis, fault detection, troubleshooting, and index optimization [4]. After exploring the repair, the maintenance work is not over, but must be reformed probe debugging and checking to verify that after the index debugging and indexing, the probe can be restored to the optimal state, the whole repair process will be considered all over the place. If possible, the best equipment to participate in the development of some of the work, since the design is higher than the maintenance [5]. This idea design maintenance, although higher requirements for future repairs easier.3.3 The focus on medical equipment engineers and preventive maintenance is the most basic requirement. B-probe is a diagnostic ultrasound instrument, an important part of the image quality and diagnostic results, and directly affects its use frequently, thus creating the possibility of very large damage, but also because the B-probe is more expensive, so pay attention to the basic requirements of medical equipment preventive maintenance engineers and technicians. Preventive maintenance, preventive maintenance is a regular and careful work, done well, carefully and rigorously, can reduce the occurrence of many failures. Many appear in the ultra probe failure, in addition to itself must be replaced with a new probe to detect natural wear and tear, the probe is less environmental and human failure, the use of these factors, so as to avoid failure through preventive maintenance, can not wait until there is a failure, we have to consider maintenance. Careful and conscientious, this will be the most important maintenance exploration.