What cable type connectors are available from I-PEX|Dai-ichi Seiko for ultrasonic probe assemblies?

There is an increasing demand for cable connectors in medical electronic devices. It is also necessary for connectors and cables to be moisture resistant, impact resistant, plugging and unplugging resistant, self-cleaning, EMI resistant, etc., so as to provide reliable connection performance and high signal integrity. Users expect medical devices to continue to provide reliable performance day after day, so these connectors and cables must be capable of daily use in harsh working environments without damage or loss. At the same time, it is also hoped that the plugging and unplugging life of the connector can exceed thousands of times. In addition, the long approval cycle and long product life of regulatory authorities also require parts suppliers to ensure that their products maintain their life cycle for a certain number of years. Therefore, when choosing cable connectors for medical equipment design, it has a long history, successful application experience in the medical electronic equipment industry, and can provide a wide range of solutions to meet the frequent plugging and unplugging times of equipment and moisture-resistant connectors. Suppliers and production lines are invaluable. The most commonly used medical equipment with connectors and cables is ultrasound devices. Ultrasonic probe wire assemblies typically use extremely thin coaxial lines from 42 AWG to 36 AWG to reduce the weight and volume of the device itself, and the extremely thin coaxial lines can also make the ultrasonic probe flexible. The ultra-thin coaxial line with characteristic impedance matching transmits the signal back and forth between the transmitter/sensor of the ultrasonic probe, so the signal line needs to be shielded to avoid EMI and crosstalk and ensure that a clear image is generated. A single ultrasonic probe assembly already uses as many as 192 or more independent coaxial wires, so how to handle so many wires is also an important design issue. Workarounds include soldering wires directly to the switch card, using board-to-board connections, or soldering them directly to other types of connectors. The switch card is usually designed as a small PCB board that can be directly used for cable connection, but it will also be designed with a board-to-board connector on the back so that the switch card can connect between the cable and the connector. Some connectors can be directly connected to the cable, which eliminates the need for switching cards. For example, a coaxial connector is such a product that can provide a modular structure, which can not only support direct welding, but also allow the probe to be assembled separately first and then installed as a whole. It can facilitate the rework and maintenance of products, effectively avoid the maintenance cycle of products, and improve the overall cost advantage. The internal connector may employ multiple small Pin number connectors. However, multi-channel ultrasonic probe assemblies require a large number of Pin interface connections. In the field of medical applications, medical staff need to quickly and easily change from one probe to another according to the type of ultrasound examination. Therefore, interface connectors with large Pin number require special design to reduce the insertion force, thereby ensuring the convenience of assembly during use.

----------------------------------------------------------1. I-PEX Cable connectors for medical electronic equipment--Small Pin number connectors: CABLINE ®-CA II series ultra-thin coaxial board connectors have a pitch of 0.4 mm, a combined height of 1mm (± 0.1 mm), a 360 ° fully shielded metal cover with locks, multiple ground point design and excellent signal integrity during 20Gbps/lane high-speed transmission, providing a perfect solution for equipment that require high-speed transmission, including ultrasonic probes. Ultrasonic sensors are generally made of piezoelectric chips mounted on flexible circuits. The signal is transmitted from the chip to the ultra-thin coaxial line via the flexible circuit board and transmitted back and forth. The application of small and ultra-thin coaxial connectors simplifies the construction of flexible components, and can also split the ultra-thin coaxial components and assemble the two components in the final assembly. One side of the cable can also be treated in the same way, using a solderable connector, a PCB board, and another interface connector. As a result, the cable can be directly connected to the PCB soldered with the fitted connector, and then the assembly can be overmolded and mounted on hardware with a catch device for enhanced security.

2. I-PEX Medical electronic equipment cable connectors produced by Daiichi Seiko--MINIDOCKMINIDOCK ® series connectors: MINIDOCKMINIDOCK ® series connectors can be used in ruggedized docking station equipment and equipment that require lower insertion force, such as: interface connectors used in ultrasonic probe assemblies. These connectors all need to have a very strong die-cast body structure, integrated guide mechanism, optional moisture-proof function and support more than 20,000 plug-in and unplug life. Although there are many connectors available for ultrasonic equipment R&D engineers to choose from, the performance requirements cannot be compromised. Connector strength, ease of use, product reliability, excellent signal integrity, and high-frequency plugging and unplugging durability are all critical parameters. Subsequently, optimization choices need to be made to balance the product application requirements and the achievability of the product.

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