L743 Used Ultrasound Transducer For Sonocsape S8 Express And S9-Pro Ultrasound Systems

L743 SonoScape Transducer for the Sonocsape S8-Express and S9-Pro Ultrasound Systems

SonoScape L743 transducer for Sonocsape S8-Express and S9-Pro ultrasound systems. The operating frequency is 4 to 16 MHz and is used for blood vessel, small parts and MSK applications. A transducer is a device that generates sound waves, which bounce off body tissues and produce echoes.

The transducer also receives the echoes and sends them to the computer, which uses them to create a picture called a sonogram. The probes come in different shapes and sizes and are used to make pictures of different parts of the body.

Ultrasound probe repair--the composition of the ultrasound probe assembly

1. Chip

The wafer is the most important part of the probe, which is used to receive electrical pulses to generate mechanical ultrasonic vibrations to complete the acoustic-electric and electrical-acoustic conversion work. The geometry and size are designed according to the diagnostic requirements. The upper and lower electrodes are respectively welded with a lead wire to transmit electrical signals; the probe is generally composed of multiple chips, and some arrange the vibrators in a line along a straight line to form a line Array probe; some arrange the vibrators along an arc to form a convex array probe; some arrange the vibrators in a matrix to form a variety of multi-element ultrasonic transducers such as a matrix probe.

Acoustic lens

Acoustic lens An acoustic element that converges or radiates sound waves. When sound waves pass through the interface of media with different sound speeds, they are refracted and the optical flow distribution of the pattern changes to the propagation direction, which may cause the sound waves to converge or diverge. The convergent effect is called acoustic focusing. The choice of acoustic lens material can be roughly considered from three aspects. To open the L743 probe for repair, firstly, the sound speed is higher than that of the surrounding medium, and open the L741 probe for repair, so that the focal length is short to reduce aberrations and transmission loss; the second is acoustic The impedance ratio is matched with the surrounding medium to reduce the reflection loss; third, the sound attenuation is small to reduce the insertion loss.

2.Acoustic lens failure

Due to the long-term direct contact with the patient's skin surface, the ultrasonic acoustic lens will cause problems for a certain period of time. Common faults include: local bulging, probe repair, air bubbles, breakage, exposure of the ultrasonic acoustic head wafer, and partial melting of the acoustic lens.

Acoustic lens failure is acoustically expressed as a partial black shadow on the ultrasound image, but the black shadow will disappear if appropriate force is applied to the black shadow part. This method can quickly distinguish the problem of the acoustic lens or the sound head. . Generally speaking, the fault caused by the acoustic lens will have a certain impact on the diagnosis effect. In this case, it needs to be repaired immediately or replaced with a new probe. If the wafer is exposed, it may be a potential hazard to the patient. At the same time, the ultrasonic couplant will also corrode the wafer, and the crystal will slowly break and cannot be repaired. For probes that slowly melted the acoustic lens due to too long time, generally speaking, the acoustic lens has been integrated with the wafer, and there is basically no way to repair the acoustic lens.

The repair of the acoustic lens is relatively low-cost in the repair of the ultrasound probe, and it takes less time. The cost is much lower than the cost of buying a new probe. It is recommended to repair the probe as soon as possible if there is a problem with the acoustic lens of the probe, so as to avoid The fault becomes more serious.

Of course, there are certain risks in repairing the acoustic lens, because there is a chip under the acoustic lens. If the operation is not careful, the chip may be damaged. In that case, the only way to replace the acoustic head