Safety and Effectiveness Evaluation of Peripheral Orbital Atherectomy
KAIZEN
KAIZEN: Safety and Effectiveness Evaluation of Peripheral Orbital Atherectomy
1 other identifier
interventional
81
1 country
12
Brief Summary
This is a prospective, single-arm, multi-center study designed to evaluate the safety and efficacy of the Orbital Atherectomy System (OAS) for the treatment of adult Japanese subjects with a de novo symptomatic calcified occlusive atherosclerotic lesion in the superficial femoral artery (SFA) and/or popliteal (POP) artery, which would be otherwise ineligible for endovascular therapy due to risk of complication. Study objective is to collect safety and effectiveness data to support potential commercialization of the peripheral OAS device in Japan.
Trial Health
Trial Health Score
Automated assessment based on enrollment pace, timeline, and geographic reach
participants targeted
Target at P50-P75 for not_applicable
Started Jan 2023
12 active sites
Health score is calculated from publicly available data and should be used for screening purposes only.
Trial Relationships
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Study Timeline
Key milestones and dates
First Submitted
Initial submission to the registry
September 2, 2022
CompletedFirst Posted
Study publicly available on registry
September 7, 2022
CompletedStudy Start
First participant enrolled
January 10, 2023
CompletedPrimary Completion
Last participant's last visit for primary outcome
April 1, 2024
CompletedStudy Completion
Last participant's last visit for all outcomes
October 10, 2024
CompletedResults Posted
Study results publicly available
October 27, 2025
CompletedOctober 27, 2025
September 1, 2025
1.2 years
September 2, 2022
July 14, 2025
September 30, 2025
Conditions
Keywords
Outcome Measures
Primary Outcomes (1)
Percentage of Subjects With Acute Device Success
The percentage of subjects with the following, post-procedure: 1. ≤50% residual stenosis post OAD + POBA \[Angiographic Core Lab assessed\] and, 2. No OAS-related severe angiographic complications defined as severe dissections (D-F), perforation, or distal emboli requiring additional treatment during the procedure \[CEC adjudicated\].
At the end of the procedure
Secondary Outcomes (10)
Change in Lesion Stenosis
Baseline, Post OAD, Post POBA
Acute Technical Success
At the end of the procedure
Drug Coated Balloon (DCB) Device Success
Within 3 minutes of insertion of DCB
Target Vessel Patency
Up to 6 months
Rate of Severe Angiographic Complications
At the end of the procedure
- +5 more secondary outcomes
Study Arms (1)
Peripheral Orbital Atherectomy System (OAS)
EXPERIMENTALTreatment with Cardiovascular Systems, Inc. (CSI) Orbital Atherectomy System (OAS) followed by Percutaneous Old Balloon Angioplasty (POBA) pre-dilation and Medtronic IN.PACT™ Admiral™ Drug Coated Balloon (DCB)
Interventions
Treatment with Orbital Atherectomy System (OAS) followed by Percutaneous Old Balloon Angioplasty (POBA), pre-dilation and Drug Coated Balloon (DCB) - Medtronic IN.PACT™ Admiral™
Eligibility Criteria
You may qualify if:
- years of age or older
- Subject has signed the approved KAIZEN study Informed Consent Form prior to any study-related procedures
- Chronic, symptomatic lower limb ischemia
- Clinical indication for percutaneous transluminal angioplasty intervention in the native SFA and/or POP artery
You may not qualify if:
- Female who is pregnant and/or breastfeeding
- Currently participating in another investigational clinical study
- Unwilling to follow the Investigator's instructions or follow-up requirements
- Any non-diagnostic peripheral vascular intervention that was unsuccessful or had complications within 30 days before clinical trial treatment
- Any non-diagnostic coronary intervention within 30 days before clinical trial treatment
- Any planned non-diagnostic vascular intervention(s) within 30 days after clinical trial treatment
- Any planned procedures or other medical conditions which, in the Investigator's opinion, may interfere with the study result and/or subject's optimal participation in the study
- Prior major amputation within one year of the clinical trial treatment procedure
- Planned major amputation
- Life expectancy of ≤6 months
- History of coagulopathy or hypercoagulable bleeding disorder
- History of Myocardial Infarction (MI), or stroke/cerebrovascular accident within 6-months prior to the clinical trial treatment
- Unstable angina pectoris
- Untreatable hemorrhagic disease or platelet count \<80,000mm3 or \>600,000mm3
- Evidence of active infection
- +19 more criteria
Contact the study team to confirm eligibility.
Sponsors & Collaborators
- Abbott Medical Deviceslead
- ICON plccollaborator
Study Sites (12)
Tokyo bay Ichikawa
Urayasu, Chiba, Japan
Matsuyama Red Cross
Matsuyama, Ehime, Japan
Fukuoka Sannou
Sawara, Fukuoka, Japan
Iwaki-City Medical Center
Iwaki, Fukushima, Japan
Shonan Kamakura General Hospital
Kamakura, Kanagawa, Japan
Kyoto Katsura Hospital
Nishikyo-ku, Kyoto, Japan
Sendai Kousei Hospital
Sendai, Miyagi, Japan
Nara Medical University
Kashihara, Nara, Japan
Morinomiya
Joto, Osaka, Japan
Ageo Central Hospital
Ageo, Saitama, Japan
Kasukabe Central (Chu-o-)
Kasukabe, Saitama, Japan
Daini Osaka Police Hospital
Osaka, Japan
MeSH Terms
Conditions
Condition Hierarchy (Ancestors)
Results Point of Contact
- Title
- Ikuko Kishimoto, Principal Clinical Scientist
- Organization
- Abbott Vascular
Study Officials
- PRINCIPAL INVESTIGATOR
Hiroyoshi Yokoi, MD
International University of Health and Welfare, Japan
Publication Agreements
- PI is Sponsor Employee
- No
- Restriction Type
- OTHER
- Restrictive Agreement
- Yes
Study Design
- Study Type
- interventional
- Phase
- not applicable
- Allocation
- NA
- Masking
- NONE
- Purpose
- TREATMENT
- Intervention Model
- SINGLE GROUP
- Sponsor Type
- INDUSTRY
- Responsible Party
- SPONSOR
Study Record Dates
First Submitted
September 2, 2022
First Posted
September 7, 2022
Study Start
January 10, 2023
Primary Completion
April 1, 2024
Study Completion
October 10, 2024
Last Updated
October 27, 2025
Results First Posted
October 27, 2025
Record last verified: 2025-09