Post-Approval Study of PALMAZ MULLINS XD™ in Treating Pulmonary Artery Stenosis

DEVICE

PALMAZ MULLINS XD™ Pulmonary Stent

The PALMAZ MULLINS XD™ Pulmonary Stent is indicated for the non-emergency treatment of pulmonary artery stenosis in pediatric patients who are at least 10kg in weight with two ventricle anatomy. The PALMAZ MULLINS XD™ Pulmonary Stent is a balloon-expandable, laser cut stent made from 316L stainless steel tubing. The stent is supplied unmounted and in five (5) nominal unexpanded lengths: 19 mm, 25 mm, 29 mm, 39 mm, and 59 mm.

Technical Success (Successful use of the study device without additional, unplanned device or procedure-related surgery/re-intervention)

Time frame: Start time of index procedure through time of discharge/study completion, usually within ~48 hours from end time of index procedure

1. Successful access, delivery and retrieval of the device delivery system, 2. Deployment and correct positioning of the device in the intended location, and 3. No need for additional, unplanned surgery or re-intervention related to the device or access procedure.

Patency (Angiographically-determined increase in stented vessel minimum pulmonary artery diameter by ≥ 50% of the pre-stent diameter)

Time frame: Index procedure (start time to end time)

Increase in stented vessel minimum pulmonary artery diameter by ≥ 50% of the pre-stent diameter determined by post-implant angiography.

Safety Outcome (Incidence of Treatment-Emergent Serious Adverse Events)

Time frame: Time of enrollment (device implant during index procedure) through time of discharge/study completion, usually within ~48 hours from end time of index procedure

Device or procedure-related, serious adverse events reported through time of hospital discharge, which meet any of the following criteria: 1. Led to a death, 2. Led to a serious deterioration in health of the subject, that either resulted in 1. Life-threatening illness or injury, or 2. Hospitalization (initial or prolonged) or 3. Disability or permanent impairment of a body structure or a body function or 4. Medical or surgical intervention to prevent life-threatening illness or injury or permanent impairment to a body structure or a body function 3. Other Serious (important) Medical Events

What is a clinical trial?

A clinical trial is a research study that tests new medical treatments, drugs, devices, or procedures to determine their safety and effectiveness. Trials are carefully designed and monitored to protect participants while advancing medical knowledge.

Is it safe to participate?

Clinical trials follow strict safety guidelines and ethical standards. Trials must be reviewed and approved, and participants are closely monitored by medical professionals throughout the study. You can withdraw at any time if you choose.

Will I be compensated?

Many clinical trials offer compensation for your time, travel expenses, and inconvenience. The specific compensation varies by study and will be discussed during the screening process. All study-related medical care is typically provided at no cost to participants.

Will I receive a placebo instead of treatment?

When effective treatment exists, participants typically receive either the standard treatment plus the study intervention, or the standard treatment plus placebo. You would not be denied effective care. Placebos are primarily used when no proven treatment is available, or in addition to standard care. Your trial consent form will clearly explain what treatments you may receive.

Can I leave a trial if I change my mind?

Absolutely. Participation in clinical trials is completely voluntary. You have the right to withdraw from the study at any time, for any reason, without penalty or loss of benefits to which you are otherwise entitled.

How long does a clinical trial last?

Trial duration varies widely depending on the study design and purpose. Some trials last just a few weeks, while others may continue for months or years. The study coordinator will provide specific timeline information during your screening call.