Nelson Gallego, as Administrator of the Estate of Jillian Rose Castro Figueroa v. Tandem Diabetes Care, Inc.

CourtDistrict Court, E.D. New York
DecidedApril 27, 2026
Docket1:24-cv-00146
StatusUnknown

This text of Nelson Gallego, as Administrator of the Estate of Jillian Rose Castro Figueroa v. Tandem Diabetes Care, Inc. (Nelson Gallego, as Administrator of the Estate of Jillian Rose Castro Figueroa v. Tandem Diabetes Care, Inc.) is published on Counsel Stack Legal Research, covering District Court, E.D. New York primary law. Counsel Stack provides free access to over 12 million legal documents including statutes, case law, regulations, and constitutions.

Bluebook
Nelson Gallego, as Administrator of the Estate of Jillian Rose Castro Figueroa v. Tandem Diabetes Care, Inc., (E.D.N.Y. 2026).

Opinion

UNITED STATES DISTRICT COURT EASTERN DISTRICT OF NEW YORK --------------------------------------------------------------- NELSON GALLEGO, as Administrator of the Estate of JILLIAN ROSE CASTRO FIGUEROA,

Plaintiff, MEMORANDUM & ORDER 24-CV-146 (MKB) v.

TANDEM DIABETES CARE, INC.,

Defendant. --------------------------------------------------------------- MARGO K. BRODIE, United States District Judge: Plaintiff Nelson Gallego, as administrator of the estate of Jillian Rose Castro Figueroa (“Decedent”), commenced the above-captioned action against Defendant Tandem Diabetes Care, Inc. on December 13, 2023, in the Supreme Court of the State of New York, Queens County (“Queens County State Court”), asserting claims of strict products liability based on manufacturing defect, negligent defective design, negligence, strict products liability based on failure to warn, breach of implied warranty of merchantability, and wrongful death under New York law arising out of Decedent’s use of an insulin pump that Defendant designed and manufactured. (Not. of Removal ¶¶ 1–2, Docket Entry No. 1.) On January 8, 2024, Defendant removed the action to the Eastern District of New York, invoking diversity jurisdiction under 28 U.S.C. § 1332. (Id. ¶ 9.) On February 15, 2024, Plaintiff filed an Amended Complaint asserting the same causes of action and adding more factual allegations. (Am. Compl., Docket Entry No. 15.) On April 12, 2024, Defendant moved to dismiss the Amended Complaint for failure to state a claim pursuant to Rule 12(b)(6) of the Federal Rules of Civil Procedure, and Plaintiff opposed the motion.1 On March 28, 2025, the Court granted Defendant’s motion and dismissed without prejudice Plaintiff’s (1) negligent defective design claim and (2) “his wrongful death claim to the extent it [was] based on the nonpreempted negligent defective design claim,” (“March 2025 Decision”).2 (March 2025 Decision 39.) Gallego v. Tandem Diabetes Care, Inc., 776 F. Supp. 3d 119, 145 (E.D.N.Y. 2025). On June 13, 2025, Plaintiff filed his Second Amended Complaint (“SAC”) in response to the March 2025 Decision. (SAC, Docket Entry No. 35.) On July 11, 2025, Defendant moved to dismiss the SAC and Plaintiff opposed the motion.3 For the reasons stated below, the Court

grants Defendant’s motion to dismiss the SAC with prejudice. I. Background The Court assumes familiarity with the facts as detailed in the March 2025 Decision, which it briefly summarizes below. The Court therefore focuses on the new facts alleged in the SAC.

1 (Def.’s Not. of Mot. to Dismiss (“Def.’s Mot.”), Docket Entry No. 21; Def.’s Mem. in Supp. of Def.’s Mot. (“Def.’s Mem.”), appended to Def.’s Mot., Docket Entry No. 21-1; Pl.’s Opp’n to Def.’s Mot. (“Pl.’s Opp’n”), Docket Entry No. 24; Def.’s Reply in Supp. of Def.’s Mot. (“Def.’s Reply”), Docket Entry No. 25.) On August 5, 2024, Defendant filed a notice of supplemental authority to which Plaintiff responded. (Def.’s Not. of Suppl. Authority (“Def.’s First Not.”), Docket Entry No. 26; Pl.’s Resp. to Def.’s First Not., Docket Entry No. 27.) On August 28, 2024, Defendant filed a second notice of supplemental authority. (Def.’s Not. of Suppl. Authority (“Def.’s Second Not.”), Docket Entry No. 28.) 2 The Court dismissed with prejudice “Plaintiff’s claims for strict products liability based on manufacturing defect, negligence, strict products liability based on failure to warn, and breach of implied warranty of merchantability on preemption grounds and Plaintiff’s wrongful death claim to the extent based on these preempted claims for failure to state a claim.” (March 2025 Decision 39, Docket Entry No. 29.) Gallego v. Tandem Diabetes Care, Inc., 776 F. Supp. 3d 119, 146 (E.D.N.Y. 2025).

3 (Def.’s Not. of Mot. to Dismiss the SAC (“Def.’s SAC Mot.”), Docket Entry No. 37; Def.’s Mem. in Supp. of Def.’s SAC Mot. (“Def.’s SAC Mem.”), appended to Def.’s SAC Mot., Docket Entry No. 37-1; Pl.’s Opp’n to Def.’s SAC Mot. (“Pl.’s SAC Opp’n”), Docket Entry No. 42; Def.’s Reply in Supp. of Def.’s SAC Mot. (“Def.’s SAC Reply”), Docket Entry No. 41.) a. Decedent’s t:slim X2 insulin pump Decedent, a diabetic, depended on the t:slim X2 insulin pump (“X2 Pump”) issued by Defendant for continuous glucose monitoring (“CGM”) and insulin administration. (March 2025 Decision 4–5.) The X2 Pump is a Class III medical device subject to the U.S. Food and Drug Administration’s (“FDA”) pre-market approval (“PMA”) process.4 (Id. at 4.) Pursuant to the PMA process, “manufacturers of insulin pumps, including the [X2 Pump], cannot make any changes to the design specifications, manufacturing process, labeling, warnings, requirements for alerts and/or alarms, or any other attribute that would affect the product’s safety or effectiveness

absent additional FDA approval.” (SAC ¶ 12.) In addition, the PMA Process required the X2 Pump “to comply with multiple failure modes, including in anticipation of the potential that the pump may be dropped, that the pump may have mechanical issues including drive train failure or insufficient drive train force as identified by the FDA during the PMA process for the subject pump,” (id. ¶ 13), and have alarms built into the X2 Pump that “notify the user and/or manufacturer of certain failures of the pump, including mechanical malfunctions and failures, such as a drive train failure,” (id. ¶ 15). Plaintiff alleges that from at least July of 2020 through January of 2021, at least thirty-

4 In its first motion to dismiss, Defendant challenged whether the relevant device was a Class II or Class III model and included a Class II model’s user guide as an Exhibit. (March 2025 Decision 6–7.) In its March 2025 Decision, the Court declined to take judicial notice of the exhibit as Defendant failed to show that the manual guide’s model was the same model that Plaintiff alleges Decedent used. (Id. at 8–9.) In addition, the Court accepted Plaintiff’s allegations as true and conducted its analysis of the device under a Class III designation. (See id. at 6–9, 9 n.4.) In its motion to dismiss the SAC, Defendant does not explicitly concede that the device Decedent used was a Class III device, but accepts the conclusion of the March 2025 Decision that the Decedent used a Class III device and proceeds in its arguments with a discussion regarding a Class III device. (See Def.’s SAC Mem. 6, 8, 11.) The Court notes that Defendant attaches the same Class II user manual guide as an Exhibit. (X2 Pump User Guide, annexed to Decl. of Jenny A. Covington, Esq. (“Covington Decl.”) as Ex. A, Docket Entry No. 37- 3.) Despite this attachment, the Court does not address the discrepancy further given Defendant’s lack of argument on the classification of Decedent’s device. seven records from Defendant addressing “patient impact” described a mechanical problem related to the X2 Pump’s cartridges. (Id. ¶ 37.) b. Decedent’s use of the X2 Pump On January 21, 2022, at approximately 8:24 A.M., Decedent received a message on the X2 Pump indicating that the X2 Pump could not load the insulin cartridge and stated the following: “ALL DELIVERIES STOPPED! This cartridge cannot be used. Remove and replace with a new cartridge.” (SAC ¶ 20.) As a result, insulin delivery to Decedent stopped. (Id. ¶¶ 21, 30.) At approximately 8:42 A.M., Decedent called Defendant and spoke with a customer support

agent who advised Decedent to go home and get a new cartridge but did not tell Decedent to call 911 or seek medical care. (Id. ¶¶ 22–25.) Decedent advised the customer support agent that the X2 pump “had fallen a few times.” (Id.

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Nelson Gallego, as Administrator of the Estate of Jillian Rose Castro Figueroa v. Tandem Diabetes Care, Inc., Counsel Stack Legal Research, https://law.counselstack.com/opinion/nelson-gallego-as-administrator-of-the-estate-of-jillian-rose-castro-nyed-2026.