Diamondback 360® Coronary Orbital Atherectomy System

Gain greater confidence in your patients’ PCI outcomes when treating severely calcified coronary lesions.

Diamondback 360® Coronary OAS’s unique mechanism of action uses a patented combination of centrifugal force and differential sanding to safely and simply reduce arterial calcium, enabling successful stent delivery.

In the ORBIT II pivotal trial, the Diamondback 360® Coronary OAS demonstrated durable results with low TLR rate of 3.4% in DES subset* at one year.8

*Subjects with DES only (N=389/443)

At CSI, we are a culture of innovation, driven by the understanding that smart design changes, no matter how small, can make a big difference at a critical moment – a difference that may make things simpler, deliver better outcomes or even save a life. We observe carefully, listen closely and collaborate extensively, seeking opportunities to help interventionalists do their jobs more easily and more effectively – all with the goal of improving patient care.

OAS is a Solution for Severe Arterial Calcium

Coronary calcium tends to be underestimated. Calcium considered mild or moderate by angiography may actually be severe if advanced imaging such as IVUS or OCT are used.44  Moderate to severe arterial calcium is present in nearly 40% of patients who undergo a Percutaneous Coronary Intervention (PCI).1


  • Diabetes
  • Chronic Kidney Disease
  • Advanced Age (>65 y/o)
  • Smoker
  • Dyslipidemia
  • Hypertension
  • Prior CABG
  • Known PAD/CAD


  • Prone to dissection during balloon angioplasty or pre-dilatation
  • Difficult to fully dilate the balloon
  • May prevent adequate stent expansion and apposition
  • May prevent stent delivery

Explore Diamondback 360 OAS

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Classic Crown

The Diamondback 360® Coronary Orbital Atherectomy System utilizes a 1.25 mm eccentrically mounted diamond-coated crown:

  • Reduces severe calcium and allows the healthy tissue to flex away
  • Provides bi-directional sanding
  • Creates minuscule particulates (most smaller than a red blood cell¹)

GlideAssist® is the innovative solution that allows for tracking, easier removal and smoother repositioning of the device – especially in challenging anatomies.


The GlideAssist feature will allow users to spin the OAD at a slow rotational speed (5 kRPM) to facilitate easier tracking and removal of the OAD. The GlideAssist feature is available on the Classic Crown OAS only.

Enable GlideAssist Mode

  • Press and hold the low speed button.
  • Release the button once the low speed light begins to slowly blink. The slowly blinking light indicates GlideAssist mode is enabled.

Secure Guide Wire

  • Ensure the guide wire is secure by locking the brake or by holding the guide wire with either fingers or the guide wire torquer.

Spin in GlideAssist Mode

  • Press and release the On/Off button on top of the crown advancer knob to activate crown rotation.
  • The low speed light will rapidly blink, indicating the crown is spinning in GlideAssist mode.

Stop Spinning in GlideAssist Mode

  • Press and release the On/Off button to stop spinning.
  • The low speed light will slowly blink, indicating the device is no longer spinning, but continues to be in GlideAssist mode.

Disable GlideAssist Mode

  • Press and immediately release either the low or high speed button while the crown is not spinning.
  • The low speed light will stop blinking, yet remains illuminated, indicating the device is now in treatment mode.
¹Shlofmitz E, et al. Expert Rev Med Devices. 2017; 14(11):867-879

ViperWire Advance® Coronary Guide Wire

ViperWire Advance Coronary Guide Wire was designed to be easy to use and to provide the tactile feedback to increase physicians’ ability to navigate the wire throughout the vessel.

Customize treatment with two guide wire options: The ViperWire Advance stainless steel guide wire or ViperWire Advance with Flex Tip nitinol guide wire, with a stainless steel support coil which allows the tip to be shaped as needed.

 ViperWire Advance with Flex TipViperWire Advance
Core Material NitinolStainless Steel
Tip/Core Diameter.014/.012.014/.012
Tip Load/Type1.0g/floppy1.4g/floppy
Tip CharacteristicsSoft, Floppy, one piece core-to-tip, with stainless steel support coil, shapeableIntermediate, one piece, core-to-tip shapable
Length325 cm325 cm



ViperWire Advance with Flex Tip’s flexible nitinol body was designed to reduce wire bias and kink resistance during coronary procedures. The stainless steel support coil provides a shapeable tip for navigation in multi-vessel coronary lesions.

  • Material/Body Type: Nitinol/flexible/kink resistance
  • Tip/Core Diameter: .014/.012
  • Tip Load/Type: 1.0g floppy
  • Tip Shapeability: Stainless steel support coil allows tip to be shaped as needed
  • ViperWire Advance with Flex Tip Model Number: GWC-12325LG-FT


OAS Pump

The OAS Pump keeps pace with the evolving Cath Lab environment, focusing on safety, simple set up and ease of use. It mounts directly onto an I.V. pole and provides power and the pumping mechanism for the Diamondback 360® System.

ViperSlide® Lubricant

ViperSlide is an exclusive lubricant for use with CSI® Orbital Atherectomy Systems. ViperSlide increases the lubricity, therefore reducing friction between the device and the ViperWire Advance Guide Wire.

The Diamondback 360® has a unique Mechanism of Action designed to:

  • Treat 360° of the vessel wall
  • Provide continuous flow of blood and saline during orbit minimizing thermal injury
  • Treat 2-4 mm* vessels with a single crown through a 6 fr guide enabling radial access
*Based on minimum reference vessel diameter as determined by orbit testing in a carbon block model

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