Is there a class action or lawsuit against Tandem or Abbott right now?

As of August 2026, there is no class action or federal multidistrict litigation (MDL) consolidating personal injury or wrongful death claims against Tandem or Abbott related to insulin pump or CGM malfunctions. A class action was filed in California in January 2026 over the FreeStyle Libre 3/3 Plus recall, but it seeks refunds and other economic damages rather than compensation for injury or death. The Anapol Weiss team is investigating individual cases now, ahead of any potential consolidated litigation.

What's the difference between an insulin pump defect and a glucose sensor defect?

An insulin pump, like Tandem's t:slim X2, is the device that physically delivers insulin. A continuous glucose monitor (CGM), like Abbott's FreeStyle Libre, is a separate sensor that measures blood sugar and sends that data to the pump. In connected systems, the pump's software uses the sensor's readings to decide how much insulin to deliver. A defect in either device, or in how they communicate, can cause a dangerous dosing error, which is why both manufacturers can potentially bear responsibility.

What if we don't know exactly which component failed?

That's common, and it's part of what a legal investigation is for. The Anapol Weiss team can request device data logs, FDA reports, and manufacturer records to help identify what happened, often with the help of biomedical engineering experts.

What does it cost to have my case reviewed?

Nothing. Anapol Weiss offers free, confidential consultations, and handles these cases on a contingency-fee basis, meaning you pay no attorney's fees unless we recover compensation for you.

Is there a deadline to file a claim?

Yes. Every state has a statute of limitations that limits how long you have to file a product liability or wrongful death claim, and that deadline can be shorter than you'd expect. The sooner your case is reviewed, the more evidence, including device data that manufacturers may not retain indefinitely, can be preserved.

Defective Insulin Pump Lawsuit Attorneys

Fighting for Families Harmed by Defective Insulin Pumps and Connected Glucose Monitors

Millions of people with diabetes rely on automated insulin delivery systems to manage a disease that leaves no room for error. When those systems work as intended, they can be life-changing. When these medical devices fail, the results can be catastrophic and even deadly.

The Anapol Weiss team is filing cases involving Tandem Diabetes Care insulin pumps and the continuous glucose monitor (CGM) sensors that connect to them, including devices manufactured by Abbott, after reports of dangerous insulin dosing errors that have led to severe injury and death.

If you or a loved one experienced a serious insulin overdose, a dangerous interruption in insulin delivery, hospitalization, or the loss of a family member connected to a malfunctioning insulin pump or glucose sensor, you may be entitled to compensation.

Anapol Weiss offers free, confidential consultations. Call 215-735-1130 or contact us online today for a free case review.

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Who Can File an Insulin Pump or CGM Lawsuit?

You or a loved one may have a case if any of the following apply:

You used a Tandem insulin pump alone or paired with a continuous glucose monitor, and experienced a dangerous insulin dosing error
A connected glucose sensor displayed an inaccurate reading that led to a dangerous change in insulin dosing
You or a family member suffered severe hypoglycemia (dangerously low blood sugar), severe hyperglycemia, or diabetic ketoacidosis (DKA) linked to a pump or sensor malfunction
You were hospitalized, required emergency treatment, suffered a seizure, lost consciousness, fell into a coma, or experienced cardiac complications after an insulin pump or CGM error
You lost a spouse, parent, or family member whose autopsy or medical records point to an insulin overdose or severe glycemic event connected to a malfunctioning pump or sensor
You received a recall notice, safety communication, or device correction notice from Tandem Diabetes Care or Abbott regarding your insulin pump or glucose sensor

Every case is different, and device malfunctions can happen in more than one way. Some cause a pump to deliver too much insulin, others cause it to stop delivering insulin altogether, and others stem from a sensor reporting glucose levels that don't match what's actually happening in a patient's body. The Anapol Weiss team reviews the specific device history, medical records, and manufacturer data behind each case individually.

How a Lawsuit Can Help

Filing a lawsuit against a device manufacturer isn't just about one family's losses. It's one of the few tools available to hold medical device companies accountable when a product that people depend on to survive turns dangerous. A lawsuit can help by:

Recovering compensation for medical bills, hospitalization, and future care costs
Recovering compensation for pain and suffering, and for wrongful death claims tied to the loss of a loved one
Forcing manufacturers to disclose what they knew about device defects, and when they knew it
Pushing for stronger warnings, design changes, or additional recalls to protect other patients
Holding companies financially accountable for prioritizing product timelines over patient safety

Understanding Tandem Insulin Pumps and Connected Glucose Sensors

Tandem Diabetes Care manufactures the t:slim X2 insulin pump, a wearable device that delivers insulin automatically throughout the day using Tandem's Control-IQ software. Rather than operating as a standalone device, the t:slim X2 is built to connect wirelessly to a continuous glucose monitor (CGM), a separate sensor that is worn on the body and measures glucose levels in real time and transmits that data to the pump.

Tandem's pumps have historically connected to Dexcom sensors. In January 2024, Tandem and Abbott announced that the t:slim X2 had become the first automated insulin delivery system to integrate with Abbott's FreeStyle Libre 2 Plus sensor. Tandem and Abbott are not affiliated companies; they are independent competitors that have partnered on specific product integrations, each responsible for its own piece of the system: Abbott for the sensor and the glucose data it reports, and Tandem for the pump and the software that decides how much insulin to deliver based on that data.

This interdependence is exactly why these systems raise unique legal questions when something goes wrong. An insulin dosing error can originate in the pump's hardware or software, in the sensor's accuracy, or in the handoff between the two. Determining which requires a careful review of the specific devices involved, their model and lot numbers, software versions, and the medical and death investigation records in each case.

A Pattern of Insulin Pump and CGM Safety Problems

Automated insulin delivery systems are complex, and both Tandem and Abbott have faced FDA recalls and safety corrections in recent years. The Anapol Weiss team is investigating whether these documented issues, or related, undisclosed defects, contributed to serious insulin dosing errors, including overdoses, in specific patient cases.

Tandem t:slim X2 pump issues:

In March 2024, Tandem recalled version 2.7 of its companion t:connect mobile app after a software glitch caused the app to repeatedly crash and relaunch, draining pump batteries and shutting the pump down sooner than expected. The FDA classified this as a Class I recall in May 2024.
In August 2025, Tandem issued amedical device correction with the FDA after identifying a wiring defect in the pump's speaker component that could trigger a "Malfunction 16" error, stopping insulin delivery and disabling the pump.

Abbott FreeStyle Libre sensor issues:

Beginning in November 2025, Abbott issued an early alert, followed by an FDA recall in early 2026 classified as "most serious," for its FreeStyle Libre 3 and FreeStyle Libre 3 Plus sensors after determining the devices could display falsely low glucose readings.
A class action was filed in California in January 2026 over the Libre 3/3 Plus recall, though that case seeks economic damages (such as refunds) rather than compensation for personal injury. Individual injury and wrongful death cases connected to these sensors are being filed by law firms nationwide, and as of August 2026, no multidistrict litigation (MDL) has been formed.

Serious Injuries Linked to Insulin Pump and CGM Malfunctions

Because insulin pumps and glucose sensors work together to manage a hormone that is dangerous in both excess and deficiency, a malfunction in either device can cause serious harm within a matter of hours. Reported complications linked to insulin pump and CGM failures include:

Severe hypoglycemia (dangerously low blood sugar) from insulin overdose
Loss of consciousness, seizures, or coma
Severe hyperglycemia and diabetic ketoacidosis (DKA) from insulin under-delivery
Cardiac arrhythmia or cardiac arrest
Hospitalization requiring emergency glucose or insulin intervention
Permanent neurological injury
Wrongful death

If a loved one passed away and an autopsy or medical examiner's report identified one of the above injuries, and that person used an insulin pump or a connected glucose sensor, it's worth having the case reviewed, even if the exact cause of the device failure isn't yet clear.

Legal Claims in Insulin Pump and CGM Lawsuits

Lawsuits involving defective insulin pumps and glucose sensors are typically brought as product liability claims. Depending on the facts of the case, these claims may allege:

Design defect: That the pump, sensor, or the software governing how they communicate was designed in a way that made dangerous dosing errors foreseeable
Manufacturing defect: That a specific device, such as the one used by the patient, was flawed due to an error in production (for example, a wiring or component failure)
Failure to warn: That the manufacturer knew or should have known of a risk of serious injury and failed to adequately warn patients and physicians
Negligence: That the manufacturer failed to exercise reasonable care in the design, testing, manufacturing, or monitoring of the device after it reached the market
Wrongful death: Brought on behalf of a deceased patient's family when a device defect contributed to their death

Why Choose Anapol Weiss

More Than 45 Years of Trial Experience

Founded in 1977, Anapol Weiss has spent decades representing people harmed by dangerous products and defective medical devices, and the firm's attorneys have served in leadership roles in some of the nation's largest multidistrict litigations.

No Fees Unless We Win

We handle insulin pump and CGM cases on a contingency-fee basis. There is no cost to have your case reviewed, and you owe nothing unless we recover compensation for you.

Resources to Investigate Complex Device Failures

These cases often turn on technical device data that isn't easy to obtain or interpret. The Anapol Weiss team works with medical and engineering experts to determine what went wrong, and why.

A Compassionate, Client-First Approach

We understand that behind every case is a family dealing with a medical crisis or the loss of a loved one. We handle each case with the care and attention it deserves.

Contact Anapol Weiss for a Free Consultation

If you or a family member suffered a serious insulin dosing error, hospitalization, or the loss of a loved one connected to a Tandem insulin pump or a connected glucose sensor, the Anapol Weiss team is here to help. Our consultations are free and confidential, and we do not charge a fee unless we win your case.

Call 215-735-1130 or complete our online form today.

Nationwide Defective Insulin Pump Lawsuit Attorneys