Connector in medical applications

Connector in medical applications

2018-07-13 09:46:48

      

Among the instruments used in various medical fields, connectors are ubiquitous - medical imaging, treatment, minimally invasive surgical instruments, implanted electronic devices, patient monitors, and various sensors. Choosing interconnect technology for a specific application is a critical first step. In past designs, versatile devices may require an infinite number of connectors. Today, connector options typically combine copper power cables with signal lines, fiber optics, fluid or gas connections, and even RF antenna interfaces, all packaged into a single integrated interface. Proper selection of connectors can reduce total cost, enable more compact packaging, and improve the delivery of medical services. Therefore, it is very important to successfully indicate the direction in the maze of connector technology.
Before identifying the connector type, the designer first needs to identify each type of connection, ie board-to-board, wire-to-board, wire-to-wire, panel-mount or in-line termination, in addition to identifying the socket via termination It is also a surface mount termination. The relevant standard should specify the number and type of interface contacts and the configuration of the associated cable. A cable is used for electrocardiography, defibrillators, power supplies, analog signals, digital signals, bandwidth, fiber optics, or a combination of the above, which will determine the diameter, length, shape, and material of the cable. In each design, there are limitations on package size, and manufacturers also have preferences for the desired physical size and brand requirements of the final product, such as logo marking and serialization for product tracking.
The specifications of the connector are primarily dependent on the intended use in a real world environment. The various application functions, as well as any potential misuse, together determine the physical properties required for the connector. In portable devices, the design requirements are much higher, allowing the patient to move freely. Portable medical devices meet design specifications that are closer to smartphones than traditional medical devices used in clinical settings. The number of medical technology devices connected may range from single-use sensors in disposable sensors to tens of thousands of insertions and withdrawals of NMR coils, or portable blood glucose meters that are worn 24 hours a day, seven days a week. The construction of the device worn or carried by the patient must be capable of functioning under a variety of conditions. In the field environment, for example, there are various levels of temperature and humidity in the patient's home, and the number of occurrences of shocks, vibrations, and accidental drops far exceeds the situation in which the various devices in the clinical environment are operated by professionals.

 

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