Background
Steven Albert lost consciousness and was hospitalized in June 2023. Medical providers discovered that the battery in his Assurity pacemaker had depleted prematurely. Albert alleged that incompletely mixed epoxy allowed moisture to enter the pacemaker’s pulse-generator head, causing the battery to drain prematurely and resulting in fainting and other medical problems, emergency treatment, and an earlier-than-expected pacemaker replacement.
Albert sued manufacturer Pacesetter, Inc. in Texas state court under strict-liability and negligent-manufacturing-defect theories. His wife and daughter asserted separate claims. After removing the case to federal court based on diversity jurisdiction, Pacesetter sought summary judgment, arguing that the Alberts lacked expert testimony connecting the alleged defect to Albert’s injuries. The district court adopted a magistrate judge’s recommendation and granted the motion.
The Court’s Holding
The Fifth Circuit affirmed. Applying Texas law, the court explained that expert testimony is unnecessary to establish medical causation only when general experience and common sense permit a layperson to determine, with reasonable probability, the causal relationship between the event and the medical condition.
The alleged causal relationship between incompletely mixed epoxy, moisture intrusion, premature pacemaker-battery depletion, and Albert’s injuries was not within lay jurors’ general experience and common sense. Expert evidence therefore was required for the causation claimed in this case. Because the Alberts lacked that evidence, Steven Albert’s claims failed, and the claims asserted by his wife and daughter failed as well.
Key Takeaways
- Texas law requires expert evidence of medical causation when the claimed causal connection falls outside ordinary experience and common sense.
- The asserted connection between an alleged pacemaker manufacturing defect and the patient’s injuries was too complex for lay jurors to determine without expert evidence.
- The failure of Steven Albert’s causation showing also defeated the claims asserted by his wife and daughter.
Why It Matters
The decision illustrates the evidentiary burden facing Texas product-liability plaintiffs whose causation theory links an alleged defect in a complex medical device to physical injuries. Lay testimony and common sense cannot establish causation when the asserted technical and medical chain is beyond ordinary experience.