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Study on Safety and Performance of Medtentia Mitral Valve Repair System in Surgical Repair of Mitral Regurgitation

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT01678144
Recruitment Status : Terminated (Strategic decision by Sponsor)
First Posted : September 3, 2012
Results First Posted : August 9, 2019
Last Update Posted : August 9, 2019
Information provided by (Responsible Party):
Medtentia International Ltd Oy

Brief Summary:
The purpose of the trial is to demonstrate the safety and performance of the Medtentia Annuloplasty Ring (MAR) during mitral valve repair surgery. In addition, the trial aims to demonstrate that the MAR fulfills the requirements for mitral valve annuloplasty rings.

Condition or disease Intervention/treatment Phase
Mitral Regurgitation Mitral Insufficiency Device: Mitral valve repair using the Medtentia Annuloplasty Ring (MAR) Not Applicable

Detailed Description:

The purpose of this study is to evaluate the safety and performance of the MAR in patients with mitral regurgitation requiring either isolated mitral valve annuloplasty or mitral valve annuloplasty concomitantly with any of the following, either individually or in combination:

  • Tricuspid valve repair
  • Coronary artery bypass grafting (CABG)
  • Valve resection and chordae repair
  • Correction of atrial septal defect
  • Correction of patent foramen ovale
  • Ablation therapy for atrial defibrillation

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Study Type : Interventional  (Clinical Trial)
Actual Enrollment : 12 participants
Allocation: N/A
Intervention Model: Single Group Assignment
Intervention Model Description: Prospective, multi-national, multi-center, open-label, single-arm
Masking: None (Open Label)
Primary Purpose: Treatment
Official Title: Evaluation of the Safety and Performance of the Medtentia Mitral Valve Repair System When Used in Adults Undergoing Mitral Valve Repair Surgery
Actual Study Start Date : June 30, 2011
Actual Primary Completion Date : July 30, 2014
Actual Study Completion Date : April 22, 2016

Arm Intervention/treatment
Experimental: Medtentia Annuloplasty Ring (MAR)
All eligible patients underwent surgical mitral valve repair using annuloplasty device - Medtentia Annuloplasty Ring (MAR)
Device: Mitral valve repair using the Medtentia Annuloplasty Ring (MAR)

Primary Outcome Measures :
  1. Safety: All-cause Mortality Occurring in the Time From Surgery Through Hospital Discharge. [ Time Frame: Time from surgery through hospital discharge, up to 7 days. ]
  2. Performance: Percentage of Participants With Improvement by at Least 2 Mitral Regurgitation Classes From Baseline (SC) to Three Months (V03) as Measured by Trans-thoracic Echocardiography (TTE). [ Time Frame: Time from baseline through V03 (3 months) ]
    Success will be defined as an improvement in at least 2 degrees in mitral regurgitation (MR) class as described in the ACC/AHA Guidelines for the Management of Patients with Valvular Heart Disease (Bonow, et al., 2008).

Secondary Outcome Measures :
  1. Safety: 30-day Mortality and Mortality at 3 Months, 6 Months, 1 Year, 1.5 Years and 2 Years. [ Time Frame: 30 days, 3 months, 6 months, 1 year, 1.5 years and 2 years after surgery ]
    Mortality rates determined both for all-cause mortality and for related deaths only. For the former, the causality status will be determined by the Investigator, and all deaths that are clearly unrelated to the device, the surgery or the underlying medical condition will be excluded from the analysis.

  2. Safety: The Occurrence, Frequency and Timing of Treatment-emergent Major Adverse Cardiac Events (MACEs). [ Time Frame: From surgery to end of study (2 years) ]
    MACE is defined as stroke and clinically significant myocardial infarction (MI), from surgery to end of study.

  3. Safety: The Occurrence, Nature and Frequency of Treatment-emergent Adverse Events (AEs), in Particular Severe Serious Adverse Device Effects (SADEs). [ Time Frame: From surgery to end of study (2 years). ]
    All the adverse events reported were non-device related.

  4. Safety: The Occurrence, Nature and Frequency of Device Deficiencies and Adverse Device Effects (ADEs). [ Time Frame: From surgery to end of study (2 years). ]
  5. Safety: The Occurrence, Frequency and Nature of Abnormalities in the Period From Surgery Through Follow-up (Detailed List in Description Field). [ Time Frame: From surgery to end of study (2 years). ]

    The occurrence, frequency and nature of abnormalities in any of the following:

    • physical examination
    • vital signs
    • electrocardiography (ECG)
    • echocardiography (ECHO)
    • Laboratory tests
    • Chest X-rays (taken only when clinically indicated)

  6. Performance: Mitral Regurgitation (MR) as Seen in Trans-esophageal Echocardiography (TEE) Performed During Surgery Before and After Annuloplasty. [ Time Frame: Day of surgery visit (V01). ]
    Success will be defined as no or only residual mitral regurgitation (MR).

  7. Performance: Percentage of Participants With Improvement by at Least 2 Mitral Regurgitation Classes at Each Follow-up Visit (V04-V06) of the Improvement in MR From Screening, as Measured by Trans-thoracic Echocardiography (TTE). [ Time Frame: V06 (24 months) ]
    Measurement analysis at 24 months after successful MAR implantation.

Other Outcome Measures:
  1. Exploratory: Change in the Mitral Regurgitation (MR) Parameters, as Measured Using TTE. [ Time Frame: From screening to end of study (up to 2 years) ]

    Change from screening at each follow-up visit in the following MR parameters, as measured using TTE:

    • Left ventricular inner dimension systole and diastole assessment by trans-thoracic echocardiography (the dimension of inner edge to inner edge, perpendicular to the long axis of the left ventricle, at the level of the mitral valve leaflet tips, measured at end-systole and end-diastole)
    • Coaptation height

  2. Exploratory: Duration of the Key Stages of the Annuloplasty Procedure. [ Time Frame: Day of surgery visit (V01) ]

    Duration of the following key stages of the annuloplasty procedure:

    • MAR implantation time (beginning with the measurement of the annulus size and ending with the completion of the last suture, but not including the time needed to measure leaflet thickness)
    • MAR rotation time
    • Suturing time (from start of annulus suturing until last knot)
    • Aortic clamp time
    • Cardiac arrest time

  3. Exploratory: Changes From Screening in NYHA Classification at All Follow-up Visits Except Discharge. [ Time Frame: At screening and at each follow-up visit (except for discharge visit, up to 2 years). ]
  4. Exploratory: Thickness of the Anterior Leaflet Segment A2 and the Posterior Scallop P2 of the Mitral Valve (MV) Leaflets, as Measured With the Dedicated Medtentia Leaflet Measurement Tool. [ Time Frame: Day of surgery visit (V01) ]

Information from the National Library of Medicine

Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the contacts provided below. For general information, Learn About Clinical Studies.

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Ages Eligible for Study:   18 Years to 85 Years   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion criteria:

Eligible patients must meet all the following inclusion criteria:

  1. Signed Informed Consent Form.
  2. Male or female aged ≥18 to ≤ 85 years on the day of screening. Females of childbearing potential (not surgically sterilized or more than one year post-menopausal) must have a negative pregnancy test (serum beta-human chorionic gonadotropin (beta-hCG) or urine) within 24 hours prior to mitral valve surgery.
  3. Patient must meet one of the following indications for mitral repair surgery according to the European Society of Cardiology (ESC) and the American Heart Association (AHA) guidelines, and must have consented to have such surgery before undergoing the informed consent process for this study.

    • Symptomatic patient with chronic severe primary mitral regurgitation (MR), left ventricle ejection fraction (LVEF) > 30% and left ventricle end systolic diameter (LVESD) < 55 mm or
    • Asymptomatic patient with chronic severe primary MR who either:

      • Has LV dysfunction (LVEF ≤ 60 % and/or LVESD ≥ 40 mm or
      • Has a preserved LV function (LVEF> 60% and LVESD < 40 mm) together with a likelihood of a successful and durable repair of > 95 % and an expected mortality rate of < 1% or
      • Has a flail leaflet and LVESD ≥ 40 mm together with a high likelihood of durable repair and a low surgical risk or
      • Has a new onset of atrial fibrillation or pulmonary hypertension (systolic pulmonary pressure > 50 mm Hg at rest) or
    • Asymptomatic patient with chronic moderate or severe primary MR who is to undergo cardiac surgery for another indication when the mitral valve (MV) repair can be performed concomitantly
    • Patient with chronic severe or moderate secondary MR and an LVEF > 30 % who is undergoing CABG concomitantly
  4. Patient must have a life expectancy of more than 24 months at the time of screening, assuming they undergo mitral valve annuloplasty.
  5. Patient must have a mitral valve diameter corresponding to MAR size 26 - 40 and leaflet thickness (smallest helix height - largest helix height) for which an appropriate MAR ring is available.
  6. Patient must be able and willing to attend all scheduled visits and comply with all study procedures.

Exclusion criteria:

Eligible patients must not meet any of the following exclusion criteria:

  1. Have had previous cardiac surgery, including but not limited to any of the following: minimally invasive surgery, mitral valve surgery or valvuloplasty, implantation of a prosthetic heart valve or cardiac defibrillator.
  2. Have ejection fraction below 30%.
  3. Plan to have any concomitant cardiac surgery or procedure other than CABG, tricuspid valve repair, correction of atrial septal defect, closure of auricular appendage, correction of patent foramen ovale and/or ablation therapy for correction of atrial fibrillation performed with the mitral valve repair, which may also include leaflet resection and chordae replacement.
  4. Have any structural hindrance or heart abnormality that would make use of the MAR technically infeasible, such as a mitral valve of an unusual size or leaflet thickness for which a suitable MAR is not available, or an obstruction or other abnormality that blocks positioning of the MAR. (Final determination to be made during surgery).
  5. Show evidence of having had an acute myocardial infarction (MI) within the 30 days preceding the mitral valve repair surgery.
  6. Have a history of stroke within the preceding 12 months or have had any stroke that is not completely clinically resolved and/or significant carotid artery disease (subjects with carotid stenosis ≥50% and/or ulceration).
  7. Have recent or evolving bacterial endocarditis or be undergoing antibiotic therapy.
  8. Have restricted mobility of the mitral apparatus that results in a valvular area less than 3.0 cm2.
  9. Be in need of annular decalcification.
  10. Have any comorbidities or conditions that would be a contraindication to open heart surgery or that would place the patient at an unacceptable surgical risk, such as: severe chronic obstructive pulmonary disease (COPD); hepatic failure; immunosuppressive abnormalities or other immunological deficiencies including being immunocompromised or having an autoimmune disease; chronic renal failure requiring dialysis; hematological abnormalities including a history of bleeding diathesis or coagulopathy; being unable to follow the locally recommended anticoagulant regimen; an intolerance or hypersensitivity to anesthetics; cancer that requires further radiation, chemotherapy or surgical treatment.
  11. Have a contraindication to trans-esophageal echocardiography (TEE)/ Doppler.
  12. Have any recent psychiatric disorder, including drug or alcohol abuse, that in the Investigator's opinion could impair the patient's compliance with study procedures.
  13. Be currently or have in the preceding 30 days participated in any other study involving an investigational drug or device.
  14. Be an employee of the investigational site directly affiliated with this study, the sponsor or the clinical research organization or have an immediate family member who is.

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT01678144

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Helsinki University Hospital, Cardiovascular and Thorax Surgery Clinic
Helsinki, Finland, 00029
Sponsors and Collaborators
Medtentia International Ltd Oy
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Principal Investigator: Kalervo Werkkala, M.D., Prof. Helsinki University Central Hospital
Additional Information:
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Responsible Party: Medtentia International Ltd Oy Identifier: NCT01678144    
Other Study ID Numbers: 2010-040
First Posted: September 3, 2012    Key Record Dates
Results First Posted: August 9, 2019
Last Update Posted: August 9, 2019
Last Verified: June 2019
Individual Participant Data (IPD) Sharing Statement:
Plan to Share IPD: No

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Studies a U.S. FDA-regulated Drug Product: No
Studies a U.S. FDA-regulated Device Product: No
Keywords provided by Medtentia International Ltd Oy:
mitral valve
mitral surgery
mitral repair
mitral annuloplasty
mitral valve surgery
mitral valve repair
mitral valve annuloplasty
Additional relevant MeSH terms:
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Mitral Valve Insufficiency
Heart Valve Diseases
Heart Diseases
Cardiovascular Diseases