Health Canada Orders Recall of NDI Passive Spheres™ Over Tracking Failures

Health Canada has issued a Type II medical device recall for NDI Passive Spheres™, the reflective tracking markers used in surgical navigation systems, after the manufacturer identified inconsistencies in the reflective coating applied to certain sterile lots. The recall, dated September 1, 2026, was published under identification number RA-82633 and affects three specific model numbers distributed to healthcare facilities.

The passive spheres are manufactured by Northern Digital Inc. (NDI), based in Waterloo, Ontario, and are used in conjunction with optical tracking cameras during navigation-assisted procedures. Medtronic, which uses the spheres in its surgical navigation systems, determined that the coating variability could compromise how reliably the system detects and tracks surgical instruments in the operating room.

What Products Are Being Recalled?

The recall covers NDI Passive Spheres™ under model or catalogue numbers 8801071, 8801074 and 8801075. According to Health Canada, more than ten lot or serial numbers are affected across these three models, though the agency has not published the specific lot list publicly. Facilities that use the affected spheres are instructed to contact the manufacturer directly to confirm whether their inventory falls within the recalled range.

Why Was This Recall Issued?

The spheres work by reflecting infrared light back to optical tracking cameras, which allows a navigation system to pinpoint the position of surgical instruments in real time. This is a critical function in procedures where precise instrument placement matters, particularly in neurology-related applications, which is the category under which Health Canada classified this alert.

The manufacturer identified variation in the reflective material used as the outer coating on a limited number of sterile lots. Because this coating is what enables the tracking cameras to ‘see’ the sphere, any inconsistency in its reflective properties can directly affect the system’s ability to detect and follow it during a procedure.

Who Should Be Concerned

This is a healthcare-audience recall rather than a general consumer alert. It applies to hospitals, surgical centers, and clinical staff who use NDI Passive Spheres™ as part of an optical navigation setup, most commonly alongside Medtronic navigation systems. Patients themselves are not expected to take any direct action, though facilities are expected to review their affected equipment before scheduling procedures that rely on these components.

Health Canada classified the action as a Type II recall, a category generally reserved for situations where a product could cause temporary or medically reversible harm, or where the probability of serious harm is considered remote. Even so, the listed potential impacts, including instrument verification failures and intermittent or lost tracking, are the kind of issues that could disrupt a procedure if not caught beforehand.

What Consumers Need to Do Now

Health Canada’s guidance for this alert is direct: facilities and staff who may have received the affected spheres should contact the manufacturer if they require additional information or want to confirm whether their stock is implicated. Northern Digital Inc. can be reached through its Waterloo, Ontario headquarters. In the meantime, clinical teams should be alert for any signs of tracking irregularities, such as red status indicators, instrument verification errors, or intermittent loss of tracking, during procedures where these spheres are used.

From the Agency

In its published notice, Health Canada explained that ‘this variability may affect the ability of the navigation system to detect and track the spheres,’ adding that ‘potential impacts may include instrument verification failures, intermittent or lost tracking, red status tracking or navigation accuracy.’ The notice was first published on September 16, 2026, and lists Health Canada as the publishing authority, with the audience specified as healthcare professionals.

No further public updates have been issued at this time. Health Canada typically updates its recall pages as more information becomes available, and facilities are encouraged to monitor the official listing for any changes to the affected lot numbers or additional guidance from Northern Digital Inc. or Medtronic.