dcsimg Case study device for arthroscopy

Go with the flow

Clear arthroscopic access cannula body

Polycarbonate from Covestro offers medical device designers increased design flexibility over other polycarbonate materials for complicated medical products with difficult-to-fill molds and parts with shallow drafts.

Supplier: Cannuflow Inc.
MedicalApplication: device for arthroscopy
Product: Makrolon® Rx1452 polycarbonate

Full case study:

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During arthroscopic surgery, medical professionals seek devices that wick away irrigation fluid that could cause painful swelling and post-surgical complications. To bring such a device to the surgeon’s table, Cannuflow sought a plastic material that offered glass-like transparency and excellent moldability while also meeting biocompatibility requirements.

Cannuflow, a leader in innovative access and fluid management devices for arthroscopy, selected Makrolon® Rx1452 polycarbonate from Covestro for its EntreVu® EX clear arthroscopic access cannula body. Cannuflow’s decision was based on the material’s clarity, which helps the surgeon easily see surgical knots, as well as its moldability and biocompatibility. This grade of Makrolon® resin meets requirements of the FDA-modified ISO 10933, Part 1, tests for biocompatibility in select tints and colors and is USP Class VI compliant.

“We chose Makrolon® polycarbonate for its ease of molding, which allows low-profile wall sections and long core pulls. This made it possible for us to make a two-layer cannula with significant added functionality without an increase of outer diameter compared with the generic cannulas surgeons previously used,” said Ted Kucklick, Cannuflow CEO and designer of the patented EntreVu EX cannula.

The main properties of Makrolon® Rx1452 polycarbonate are:

  • Low viscosity
  • Easy release
  • High strength
  • Toughness
  • Biocompatibility
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