About us

Lesjöfors is active as a supplier of springs, wire forms and small and meticulous metal components to the manufacturers of medical devices used in, amongst others, cardiology, neurology, endoscopy and orthopaedics. The engineers working at Lesjöfors have years of experience in this specific area of the medical springs business and are used to co-operate in the R&D stage of the products. Early involvement and participation in the development and prototyping process has more than ones proven to be of great value to our customers.

We can offer very rapid realisation of new product developments caused by this great expertise and experience. Beside these facts, we have access to an extended network with information and knowledge on all kinds of issues. The disciplines like quality control, registration and preserving traceability are performed according the requirements in this specific area. In short, we offer a "one-stop shop" as a service provider for problem solving, technical support, development and production, using up to date knowledge and technologies, in the broadest sense.

Typical examples of our skills are:

Micro coiling, Wire forms and special coiling
Micro coils, in various dimensions and shapes, used as parts for small medical devices, in bright or coated materials as e.g. stainless steel alloys, Platinum-Iridium, Platinum-Tungsten, Tungsten, etc., wire sizes as small as 0,030 mm. Wire forms made of stainless steel alloys, precious metal alloys like Platinum-Iridium and Platinum-Tungsten for various applications, wire sizes 0,10 - 0,80 mm.
Special shaped coils with variable pitch, long coils as parts for special guidewires.
Special coiling of various Platinum-Iridium alloys into helix /fixation electrodes and multifilar electrode coils, very small sizes and complex forms, with high demands on dimensions, surface, quality control, cleaning, packaging and registration.

Reinforcement spirals
For several applications in medical treatment, spiral reinforced Polymer tubing is used. These spirals have a high coiling ratio, possible variable pitches and spring diameter (conical shape), lengths up to 350 mm or longer. Materials used are Stainless Steels, most common AISI 302 round spring wire in the range of 0,20 to 0,40 mm with a bright, clean surface. Coils are cleaned, free from contamination such as oils and particles, packed in such a way that contamination, damaging and tangling during transport and storage are prohibited.

Long coils
Long coils, up to a length of 6.000 mm, are produced for several applications. It can be a component for the production of various guidewires, using bright or with PTFE (PolyTetraFluorEthylene) coated stainless steel round or shaped wires. Wire size range from 0,060 mm to 0,254 mm (basic wire size). The automatic coiling process  is controlled by laser sensors.