New heart stent device tested in japan – could it reduce fractures?
NCT ID NCT07373353
First seen Jun 27, 2026 · Last updated Jun 27, 2026
Summary
This study tests a new device called AMJ-401 in 50 people with ischemic heart disease (blocked heart arteries) in Japan. Participants receive the device during a standard procedure to open blocked arteries. The main goals are to check for acute strut fractures right after the procedure and to see how well the device is covered by tissue after 6 months. This is an early-stage trial focused on safety and device performance.
What this could mean
Our plain-language read of the trial. This is informational only, not medical advice or a prediction.
- Active substance
- AMJ-401 device
- What this could lead to
- If successful, this device could improve outcomes for patients with blocked heart arteries by reducing complications like strut fractures.
- What could go wrong
- This is a small, early-phase study with only 50 participants. It focuses on device performance, not long-term patient benefits. The device may not show clear advantages over existing stents.
This is an AI summary of the original study and may miss details. Read our disclaimer.
Study facts
What this study's own registry entry says, in plain language.
- Phase
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Not a phased trial
Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.
- Participants
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About 50 people
The number the study aims to enrol. It can still change while the study runs.
- Started
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Dec 2025
- Expected to finish
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Oct 2031
An estimate. End dates often move.
- Lead sponsor
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A company
The lead sponsor is a pharmaceutical, biotech, or medical-device company.
Who can take part
This study's own entry requirements. Only the study team can say for certain whether you qualify.
- Ages
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18 years and older
- Sex
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Anyone
- Healthy volunteers
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Not accepted
This study is not open to healthy volunteers. The entry requirements below say who it is open to.
Show the full entry requirements Hide the full entry requirements
Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.
Inclusion Criteria 1. Subject must be at least 18 years of age. 2. Subject or a legally authorized representative must be able to provide written Informed Consent prior to any study related procedure, per site requirements. 3. Subject must have evidence of myocardial ischemia (e.g., stable angina, silent ischemia, unstable angina, acute myocardial infarction) suitable for elective PCI. 4. Subject must be an acceptable candidate for coronary artery bypass graft (CABG) surgery. 5. Subject must be able to take dual antiplatelet therapy (DAPT) for minimum of 12 months following the index procedure and anticoagulants prior/during the index procedure, and the subject has no known allergic reaction, hypersensitivity or contraindication to aspirin, clopidogrel, prasugrel, ticagrelor, ticlopidine or heparin. 6. Female subjects of childbearing potential must not be pregnant\* at screening and do not plan pregnancy for at least 12 months following the index procedure. \* Female subjects of child-bearing potential must have a negative pregnancy result within 7 days prior to the index procedure. 7. Female subjects must not be breast-feeding at the time of the screening visit and will not be breast-feeding for at least 12 months following the index procedure. 8. Subject agrees to not participate in any other investigational or invasive clinical study for a period of 13 months following the index procedure. Exclusion Criteria: 1. Elective surgery planned within 12 months after the procedure that will require general anesthesia or discontinuing either aspirin or P2Y12 inhibitor. 2. Subject has known hypersensitivity or contraindication to device material and its degradants (everolimus, PLLA, PDLLA, platinum, lactic acid, and lactide) that cannot be adequately pre-medicated. 3. Subject has a known contrast sensitivity that cannot be adequately pre-medicated. 4. Subject with known diagnosis of ST-elevation myocardial infarction (STEMI) within 72 hours of the index procedure. 5. The subject is currently experiencing clinical symptoms consistent with new onset acute myocardial infarction (AMI), such as nitrate-unresponsive prolonged chest pain with ischemic ECG changes. 6. Subject has an unstable cardiac arrhythmia which is likely to become hemodynamically unstable due to their arrhythmia 7. Subject has a known left ventricular ejection fraction (LVEF) \< 30% (LVEF may be obtained at the time of the index procedure prior to subject registration if the value is unknown and the site Investigator believes it is necessary). 8. The target vessel was treated by PCI within 12 months prior to index procedure. 9. Prior PCI within the non-target vessel is acceptable if performed anytime \> 30 days before the index procedure, or between 24 hours and 30 days before the index procedure if successful and uncomplicated. 10. Subject requires future staged PCI either in target or non-target vessels. 11. Subject has a malignancy that is not in remission. 12. Subject is receiving immunosuppressant therapy or has known life-threatening immunosuppressive or life-threatening autoimmune disease (e.g., human immunodeficiency virus, systemic lupus erythematosus, etc.). Note: corticosteroids are not included as immunosuppressant therapy, diabetes mellitus is not regarded as autoimmune disease. 13. Subject has received any solid organ transplants or is on a waiting list for any solid organ transplants. 14. Subject has previously received or scheduled to receive radiotherapy to coronary artery (brachytherapy), or chest/mediastinum. 15. Subject is receiving or will require chronic anticoagulation therapy (e.g., warfarin). 16. Subject has a platelet count \< 100,000 cells/mm3 or \> 700,000 cells/mm3. 17. Subject has documented or suspected cirrhosis of Child-Pugh ≥ Class B. 18. Subject has known renal insufficiency: * Dialysis at the time of screening or * An estimated GFR \< 30 ml/min/1.73m2 19. Subject has a high risk of bleeding, or; * Subject has a history of bleeding diathesis or coagulopathy. * Subject has had a significant gastro-intestinal or significant urinary bleed within the past six months. * Subject has prior intracranial bleed (including severe permanent neurologic deficit that seems to be caused by previous intracranial bleeding). * Subject has known intracranial pathology that may cause intracranial bleeding per investigator assessment (e.g., untreated aneurysm greater than 5 mm, arteriovenous malformation) * Subject will refuse blood transfusions. * Subject is receiving antiplatelet medication other than aspirin or P2Y12 inhibitor for the treatment of another condition and cannot discontinue them 20. Subject has had a cerebrovascular accident or transient ischemic neurological attack (TIA) within the past six months, 21. Subject has extensive peripheral vascular disease that precludes safe 6 French sheath insertion via any vessel. 22. Subject has life expectancy \< 3 years. 23. Subject is in the opinion of the Investigator or designee, unable to comply with the requirements of the study protocol or is unsuitable for the study for any reason. 24. Subject is currently participating in another clinical trial that has not yet completed its primary endpoint. 25. Subject whose willingness to volunteer in a clinical investigation could be unduly influenced by the expectation, whether justified or not, of benefits associated with participation or of retaliatory response from senior members of a hierarchy in case of refusal to participate (e.g., subordinate hospital staff or sponsor staff).
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Conditions
The condition(s) this trial relates to.
As listed by the trial registrant
The condition terms exactly as the trial's registrant entered them.
How to take part
Only the study team decides who joins. These are the ways to reach them.
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The places running it
10 sites. The list below names each one and where it is.
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The official record
ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.
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A doctor treating you
A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.
Contacts and locations
Locations
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Fujita Health University Hospital
RECRUITINGToyoake, Aichi-ken, 470-1192, Japan
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Iwate Medical University Hospital
RECRUITINGShiwa-gun, Iwate, 028-3695, Japan
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Kawasaki-Saiwai Hospital
RECRUITINGKawasaki, Kanagwa, 212-0014, Japan
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Kindai University Hospital
RECRUITINGSakai, Osaka, 590-0197, Japan
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Kokura Memorial Hospital
RECRUITINGKitakyushu, Fukuoka, 802-8555, Japan
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Mitsui Memorial Hospital
RECRUITINGTokyo, Chiyoda-ku, 1018643, Japan
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Miyazaki Medical Association Hospital
RECRUITINGMiyazaki, Miyazaki, 880-2102, Japan
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Shonan Kamakura General Hospital
RECRUITINGKamakura, Kanagwa, 247-8533, Japan
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Showa Medical University Hospital
RECRUITINGShinagawa-ku, Tokyo, 142-8666, Japan
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Teikyo University Hospital
RECRUITINGItabashi-ku, Tokyo, 173-8606, Japan
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