Tekni-Plex, Inc. of Wayne, PA at MEDICA 2019 in Düsseldorf -- MEDICA - World Forum for Medicine
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Tekni-Plex, Inc.

460 East Swedesford Road, 19087 Wayne, PA

This company is co-exhibitor of
Colorite Ltd., A Tekni-Plex Company

Hall map

MEDICA 2019 hall map (Hall 6): stand H30

Fairground map

MEDICA 2019 fairground map: Hall 6

Our range of products

Product categories

  • 01  Electromedical Equipment / Medical Technology
  • 01.09  Hospital equipment, care equipment
  • 01.09.15  Other equipment for hospital and care

Our products

Product category: Other equipment for hospital and care

Catheter Mandrel Technology

Dunn’s catheter mandrels, also known as catheter cores, are precision extruded, solid acetal rods supplied on continuous spools for ease of use during catheter processing operations. Our mandrels are used throughout this process to maintain critical inside wall dimensions during initial extrusion of the inner polymer layer, application of the reinforcing fiber layer, and extrusion or ”jacketing” of the outer layer. Dunn’s mandrel diameter tolerances – as low as +/- 0.0005 inches – set us apart from in-house options or competing vendors.

Available in diameters from 0.020 to 0.25 inches, Dunn’s medical mandrels create reinforced tubing solutions for diagnostic catheters, guide catheters, high pressure contrast injection tubing, and other minimally invasive, small-diameter medical devices. Adding such reinforcement to tube walls improves torque transmission, kink resistance, column strength and internal pressure resistance.
Reinforcements are constructed from metal or polymer fibers, and applied in braided or coiled constructions depending on the application requirements. Application of the reinforcement is typically performed over a thin-wall polymer tube. An outer polymer layer is extruded or hand assembled and reflowed over the reinforcement layer to form the multilayer construction.

Medical catheter manufacturers around the world use Dunn’s catheter mandrels to retain critical lumen tolerances during extrusion, braiding, coiling and jacketing processes. Low friction material properties and ultra-smooth surfaces allow these cores to be easily removed after catheter shaft assembly.

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Product category: Other equipment for hospital and care

Configurations Single and Multi-lumens

Lumens provide working channels within minimally invasive devices through which fluids or other devices pass. These can be medical tubing solutions with extremely narrow lumens used in neurovascular devices, or relatively large passageways for laparoscopy devices. Dunn Industries is capable of producing single lumen tubes with diameters as small as 0.008 inches and as large as 0.480 inches.

Multiple lumens are commonly used in interventional devices to allow for multiple fluid channels, accommodate multiple small-diameter medical devices, or both. These lumens come in a wide variety of shapes, from circular channels for guide wires to ‘D’ configurations used in peripherally inserted central catheters (PICC lines). Dunn has produced small catheters with more than 17 lumens.

Over our 30 years as a manufacturer of extruded small-diameter medical tubing, Dunn Industries has established an extensive library of mandrels and dies. These have proven to be invaluable for creating rapid prototypes to accelerate time-to-market for medical device brand customers.

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Product category: Other equipment for hospital and care

Material Technologies Polyolefins

Polyolefins are used in a wide range of catheter applications, from dilators used in vascular introducer sets, to lumen liners in interventional catheters. This family includes polypropylene (PP), low density polyethylene (LDPE) and high density polyethylene (HDPE). These materials are melted processible on conventional equipment, economically priced, and offer low friction properties approaching that of polytetrafluoroethylene (PTFE).

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About us

Company details

Founded in 1987, Dunn Industries is a premier supplier of catheter mandrels and thermoplastic small-diameter tubes for medical device manufacturers around the world. Operating from a state-of-the-art, 16,000-square-foot facility in New Hampshire, our precision extruded medical tubing solutions are utilized for prototypes, clinical trials, and larger-scale production of catheter shaft assemblies and other minimally invasive components.

Our team of medical extrusion engineers provides customers with medical tubing solutions at tight tolerances and on quick turnaround, a combination of speed and accuracy unsurpassed in the industry. This unique versatility and flexibility are woven into our DNA. Going back to our founding as a family-owned company, Dunn Industries is nimble enough to deliver responsive, personalized service yet robust enough for today’s increasingly competitive medical production landscape. Today, as part of the Tekni-Plex family of companies, we also have the global resources and strength to meet the worldwide demand for precision, small diameter medical tubing solutions.

Our customized, small-diameter medical tubes come in a wide range of thermoplastics and in a wide variety of configurations, from tapered (bump) tubing and those incorporating longitudinal wires to microextruded tubes as narrow as 0.25 mm (less than 1 French size). Our precision catheter mandrels allow catheter manufacturers to retain exact lumen dimensions throughout production and assembly operations.

As medical tubing needs become more exacting and time-sensitive, we invite you to lean on our decades of experience to help meet your most demanding manufacturing goals.

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