In the manufacture of medical equipment which affects human life, we allow no compromise. All products have guaranteed safety and quality after passing the strictest inspections.
Our manufacturing team has various technologies to maintain high quality. They keep the components in a perfect condition. They know how to control the mounting machines to place the components at the precise position. The size of the smallest component is 0.6 x 0.3 mm. They can place them 0.2 mm apart.
They control the temperature in the soldering furnace for secure and durable soldering. These technologies allow Nihon Kohden to produce small portable products as well as larger sophisticated products.
The soldering condition of all points is checked with an inspection machine or by visual check. The characteristics of the components and electrical connections are checked by a special machine. Finally, the full function of the PC board is checked with various testing tools.
5 production lines turn out high quality printed circuit boards
Inspecting solder quality on a 3D imaging system
The complete medical instrument is assembled from the PC boards and mechanical parts at the assembly line. This process employs a cell production system. One worker assembles the entire instrument by his or her self. Parts and tools are set up around each worker so they do not need to walk around to look for necessary parts and tools
This system works well for the manufacturing of a wide variety of products in small quantities. An automated conveyer belt system is effective for mass production but it has a high cost whenever the line is set up or reconfigured for other production. The cell production system is easy to reconfigure to meet flexible production requirements. Also, this system gives great motivation. The workers can feel both responsibility and satisfaction in making the complete instrument. Good quality products are produced in this way.
Parts are delivered in trays on racks. The trays are placed in the order of assembly. The only thing the workers need to do is take the parts in the order of the trays. They can find the necessary parts immediately. This saves time.
All information about the parts, tools used, and the worker is recorded on the computer. The complete history of each part of the instrument can be traced by the serial number on the instrument.
Finally, proper functioning of all assembled products is verified.
All products receive final inspection before shipment. Qualities of all parts, especially safety characteristics, are strictly examined in this process. Measured data are stored in the computer so it is traceable even after shipment.
The final inspection is performed by specified staff of the quality assurance department. This staff is never involved in the production such as PCB mounting or assembling. They are well trained in inspection and can achieve an impartial inspection to maintain the high quality of Nihon Kohden products.