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Clinical Trial Details — Status: Active, not recruiting

Administrative data

NCT number NCT02979587
Other study ID # MDT16004CON001
Secondary ID
Status Active, not recruiting
Phase N/A
First received
Last updated
Start date January 2017
Est. completion date February 2031

Study information

Verified date February 2024
Source Medtronic Cardiovascular
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The purpose of this study is to further evaluate the safety and effectiveness of the Harmony™ TPV system. The Pivotal/CAS phases of the study have transitioned into a post-approval study to confirm the long-term functionality of transcatheter implantation of the Medtronic Harmony TPV.


Description:

The continued clinical experience addendum is a prospective, multi-center, non-randomized, interventional study to evaluate the safety and effectiveness of the Harmony TPV system. All implanted subjects will receive the Harmony TPV 22 or Harmony mTPV 25 device. This phase allows up to 45 subjects implanted with TPV 22 in the United States and Canada, and up to 84 subjects implanted with mTPV 25 in the United States. The Post Approval Phase (PAS) addendum is a prospective, multi-center, non-randomized, post-market study to evaluate the safety and effectiveness of the Harmony TPV system in the United States. All implanted subjects have been implanted with the Harmony TPV 22 or Harmony mTPV 25 device during the pivotal or CAS phase of the study. The PAS addendum extends follow-up from five years to ten years for consenting subjects.


Recruitment information / eligibility

Status Active, not recruiting
Enrollment 86
Est. completion date February 2031
Est. primary completion date July 17, 2020
Accepts healthy volunteers No
Gender All
Age group N/A and older
Eligibility Inclusion Criteria: - Subject has severe pulmonary regurgitation as assessed via echocardiography or CMR determined PR fraction >/= 30% - Subject has clinical indication for surgical placement of an RV-PA conduit or bioprosthetic pulmonary valve - Subject is willing to consent to participate Exclusion Criteria: - Patients with right ventricular outflow tract obstruction (RVOTO) lesions surgically treated with an RV-to-PA conduit implant - RVOT anatomy or morphology that is unfavorable for device anchoring - Positive pregnancy test - Life expectancy of less than 1 year

Study Design


Intervention

Device:
Harmony TPV System
The Harmony™ TPV (Model NTPV0022) is comprised of a 22mm porcine pericardium valve, sewn to a polyester-covered nitinol frame. The Harmony TPV 25 and mTPV 25 (Model HTPV254952 and HTPV254252, respectively) is comprised of a 25mm porcine pericardium valve, sewn to a polyester covered asymmetrical hourglass nitinol frame with larger diameter inflow and outflow as well as shorter length compared to TPV 22 (Harmony TPV 25 Model HTPV254952 is not applicable for Continued Clinical Experience). The Harmony Delivery System (DS) for the TPV 22, TPV 25, and mTPV 25 (NTPVDS0022 and HTPVDS0025) are all 25 Fr delivery systems using a coil loading catheter.

Locations

Country Name City State
Canada The Hospital for Sick Children (SickKids) Toronto Ontario
Canada Toronto General Hospital Toronto Ontario
Japan National Cerebral and Cardiovascular Center Suita Osaka
United States Nationwide Children's Hospital Columbus Ohio
United States Texas Children's Hospital Houston Texas
United States Ronald Regan UCLA Medical Center Los Angeles California
United States Yale University New Haven Connecticut
United States Stanford University Medical Center Palo Alto California
United States The Children's Hospital of Philadelphia Philadelphia Pennsylvania
United States Mayo Clinic Rochester Minnesota
United States Primary Children's Hospital Salt Lake City Utah
United States Seattle Children's Hospital Seattle Washington

Sponsors (1)

Lead Sponsor Collaborator
Medtronic Heart Valves

Countries where clinical trial is conducted

United States,  Canada,  Japan, 

Outcome

Type Measure Description Time frame Safety issue
Primary Freedom From Procedure- or Device-related Mortality at 30 Days. The primary safety endpoint is point estimate of freedom from procedure or device-related mortality rate at 30 days post procedure. 30 days
Primary Number of Participants With Acceptable Hemodynamic Function Composite at 6 Months Defined as:
Mean RVOT gradient as measured by continuous-wave Doppler =40 mmHg -AND-
Pulmonary regurgitant fraction as measured by magnetic resonance imaging <20%
6 months
Secondary Number of Participants With Technical Success at Exit From Catheterization Lab/Operating Room (OR) Technical success at exit from catheterization lab/operating room (OR), as defined as:
No device- or procedural-related mortality, with
Successful access, delivery and retrieval of the delivery system, and
Deployment and correct positioning (including minor repositioning if needed) of the single intended device, and
No need for additional unplanned or emergency surgery or re-intervention related to the device or access procedure
At exit from catheterization lab/operating room (OR)
Secondary Device Success Out to 5 Years Device success is defined as:
No device- or procedural-related mortality, with
Original intended device in place, and
No additional surgical or interventional procedures related to access or the device since completion of the original procedure (i.e., exit from the catheterization lab), and
Intended performance of the device, as defined as:
Structural performance: No migration, embolization, detachment, major stent fracture, hemolysis, thrombosis, endocarditis, and
Hemodynamic performance: Relief of insufficiency (PR < moderate) without producing the opposite (mean RVOT gradient > 40 mmHg) as measured by continuous wave Doppler, and
Absence of para-device complications, as defined by:
PVL = moderate, or
Erosion, or
RVOT or PA rupture
5 years
Secondary Number of Participants With Procedural Success at 30 Days Procedural success is defined as:
Device success at 30 days, and
None of the following device- or procedure-related serious adverse events:
Life-threatening major bleed
Major vascular or cardiac structural complications required unplanned reintervention or surgery
Stage 2 or 3 acute kidney injury (AKI) (includes new dialysis)
Pulmonary embolism
Severe heart failure (HF) or hypotension requiring IV inotrope, ultrafiltration, or mechanical circulatory support
Prolonged intubation >48 hours
30 days
Secondary Freedom From TPV Dysfunction Out to 5 Years TPV dysfunction is defined as any one of the following:
RVOT reoperation for device-related reasons
Catheter re-intervention of TPV
Hemodynamic dysfunction of the TPV (moderate or greater pulmonary regurgitation, and/or a mean RVOT gradient >40 mmHg)
5 years (5 year data has an anticipated reporting date of April 2025)
Secondary Assessment of Safety All procedure-related serious adverse events. All device-related serious adverse events. Death (all-cause, procedural, and device-related). Ongoing
Secondary Characterization of Quality of Life Scores Out to 5 Years Quality of life score over time will be assessed by the SF-36 at pre-implant, 1 month post-implant, 6 months post-implant, 1 year post-implant, 2 years post-implant, and 3 years. The analysis cohort will be the implanted > 24 hours cohort. Minimum score of 0 and maximum score of 100 is possible. Higher values are considered to be a better outcome. Baseline, 30 Day, 6 Month, 1 Year, 2 Year, 3 Year
Secondary Characterization of Right Ventricle Remodeling Following TPV Implant Right ventricle remodeling will be assessed via CMR at pre-implant and 6 months post-implant. The analysis cohort will be implanted longer than 24 hours cohort. The characterization will be made using right ventricular end diastolic volume (ml). Baseline, 6 Month
Secondary Characterization of Quality of Life Scores Out to 5 Years Quality of life score over time will be assessed by the SF-36 at 4 & 5 years. The analysis cohort will be the implanted > 24 hours cohort. Minimum score of 0 and maximum score of 100 is possible. Higher values are considered to be a better outcome. 4 Year, 5 Year (4 & 5 year data has an anticipated reporting date of April 2025)
Secondary Characterization of Right Ventricle Remodeling Following TPV Implant Right ventricle remodeling will be assessed via CMR at 2 years post- implant and 5 years post-implant. The analysis cohort will be implanted longer than 24 hours cohort. The characterization will be made using right ventricular end diastolic volume (ml). 2 Year, 5 Year (2 & 5 year data has an anticipated reporting date of April 2025)
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