ClinicalTrials.gg
Not yet recruitingNCT07805525MCV3830Updated Sep 4, 2026

Early Feasibility Study of 3830 Lead Implantation Via the Middle Cardiac Vein in Patients With Prior or Planned Tricuspid Valve Intervention

An interventional study of Pacemaker in Cardiac Conduction Disorders Requiring Permanent Pacing in Patients With Prior or Planned Tricuspid Valve Intervention, sponsored by Minneapolis Heart Institute Foundation. Not yet recruiting at 1 site in United States. Open to participants aged 18 Years and older. Per ClinicalTrials.gov, last updated 2026-09-04.

Sponsored by Minneapolis Heart Institute Foundation · Not applicable, Interventional, and Device feasibility

Phase
Not applicable
Study type
Interventional
Enrollment
10
Allocation
Not applicable
Ages
18 Years and older
Sex
All
01

Study summary

Prospective, single center, early feasibility study designed to evaluate the initial safety and device performance of the Medtronic 3830 Lead when implanted via the Middle Cardiac Vein in patients with prior or planned tricuspid valve interventions.

02

Conditions studied

  • Cardiac Conduction Disorders Requiring Permanent Pacing in Patients With Prior or Planned Tricuspid Valve Intervention
03

In context

Lead sponsor

Minneapolis Heart Institute Foundation is the lead sponsor of 34 studies on the registry; 13 are open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years and older
Sexes eligible
All
Accepts healthy volunteers
No

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  1. Subjects who meet current clinical practice guidelines for implantation of a PPM or CRT-P system and will undergo one of the following procedures are eligible for enrollment, provided all inclusion and no exclusion criteria are met:

    1. Medtronic 3830 DDD pacing mode (dual-chamber pacemaker) OR
    2. Medtronic 3830 VVI pacing mode (single-chamber ventricular pacemaker) OR
    3. Medtronic 3830 CRT-P system implantation
  2. Anatomical suitability for middle cardiac vein lead placement based on pre-procedural CT imaging.
  3. Patient must have prior or planned tricuspid valve intervention, including any of the following:

    • Surgical tricuspid valve repair (e.g., annuloplasty ring, leaflet repair) OR
    • Surgical tricuspid valve replacement with a bioprosthetic or mechanical valve OR
    • Transcatheter tricuspid valve repair (e.g., edge-to-edge repair devices) OR
    • Transcatheter tricuspid valve replacement (orthotopic or heterotopic) OR
    • Patients with pre-existing transvalvular RV lead undergoing lead extraction for the management of tricuspid regurgitation who require reimplantation of a new ventricular pacing lead
  4. A clinical need to avoid crossing the tricuspid valve, as determined by the treating heart team (e.g., risk of prosthesis-lead interaction, leaflet trauma, or the need to maintain a lead-free tricuspid valve)
  5. Age 18 years or older.
  6. Signed Patient Form (ICF).

Exclusion criteria

Exclusion Criteria:

  1. \< 6 months due to non-cardiac comorbidities or advanced frailty where the procedure is not aligned with goals of care
  2. to transvenous lead implantation, including:

    • Severe or occlusive disease of the axillary/subclavian venous system
    • Coronary sinus or middle cardiac vein occlusion, severe stenosis, or anatomy prohibiting safe lead delivery
    • Known hypercoagulable state or bleeding disorder not manageable with standard therapy.
  3. Subject is contraindicated for a single dose of 40.0 µg of beclomethasone dipropionate
  4. Patient with evidence of active infection or undergoing treatment for an infection.
  5. Inability to provide , including:

    • Cognitive impairment without a legally authorized representative
    • Language or communication barriers that prevent adequate understanding of the study
  6. Unable to follow through study protocol for any reasons (social support, distance from research center, insurance denial, mental illness etc.) in the investigator's judgement
  7. Pregnant women or breastfeeding women, or women of and who are not on a reliable form of birth regulation method or abstinence
  8. End-Stage Renal Disease (ESRD) on dialysis
  9. IV
Terms in these criteria, in plain language(5)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Life expectancy

The study doctor’s estimate of how long someone is likely to live. Criteria use it so that people can stay in the study long enough for it to answer its question.

Contraindication

A reason a treatment, test or procedure should not be given to a particular person, such as an allergy, another illness or a medicine they take.

Childbearing potential

Able to become pregnant: from the first period until menopause, unless permanently unable to through surgery (removal of the womb, or of both ovaries or both fallopian tubes).

Criteria for people of childbearing potential usually ask for a negative pregnancy test and for contraception during the study and for a time after it.

NYHA class (heart failure)

The New York Heart Association’s four classes of how much heart failure limits physical activity.

I
No limits: ordinary activity causes no undue tiredness or breathlessness.
II
Slight limits: comfortable at rest, ordinary activity causes symptoms.
III
Marked limits: comfortable at rest, less than ordinary activity causes symptoms.
IV
Symptoms even at rest; any activity makes them worse.

Studies set their own limit — many outside heart failure leave out class III–IV, while heart failure studies may ask for a particular class. Check the class this study names.

05

Study design

Phase
Not applicable
Primary purpose
Device feasibility
Allocation
Not applicable
Intervention model
Single group
Masking
None (open label)
Enrollment
10 participants (estimated)

Study arms

  • Experimental
    Interventional

    Patients will undergo implant of the Medtronic Model 3830 pacemaker lead via the Middle Cardiac Vein and undergo required electrical testing

    Device: Pacemaker

Interventions

  • DevicePacemaker

    Required electrical testing for pacing, sensing, impedance will be completed

06

What researchers measure

Primary outcomes

  1. Acute Procedural Success

    Acute Procedural Success: defined as successful implantation of the SelectSecure™ Model 3830 lead in the targeted proximal septal segment of the middle cardiac vein, absent of any serious adverse events related to the MCV implantation site, and achievement of the following: 1. Successful lead delivery and fixation at the intended MCV location using ≤ 4 deployment attempts 2. Stable lead position at completion of the implant procedure 3. Acceptable acute electrical performance, including: * Capture threshold ≤ 2.0 V at 0.4 ms * Sensing amplitude ≥ 4.0 mV * Lead impedance between 200-1500 Ω 4. No device- or procedure-related Major Adverse Cardiovascular Events (MACE) through hospital discharge 5. Absence of oversensing, including: * T-wave oversensing (TWOS) * P-wave oversensing (PWOS) * Myopotential oversensing * Diaphragm stimulation

    Time frame: Index Procedure

Secondary outcomes

  1. Incidence of Device- or Procedure-Related Serious Adverse Events and Complications

    Number of participants experiencing device- or procedure-related complications through 90 days following implantation including but not limited to: * Pericardial effusion * Clinically significant perforation * Infection * Coronary sinus or venous injury * Clinically significant phrenic nerve/diaphragmatic stimulation * Lead revision or system extraction due to complications

    Time frame: Up to 90 days following implant

  2. Lead Electrical Performance and Stability Through 12 Months

    1\. Evaluation of pacing and sensing performance from the MCV lead at implant and during routine follow-up visits (pre-discharge, 3, 6, 9 and 12 months), including: * Stability of capture thresholds * Stability of sensing amplitudes * Lead impedance trends * Percentage pacing * Lead stability (absence of dislodgement or migration) * Need for lead revision or system modification due to performance issues * Presence of conduction system capture at implant * Persistence of conduction system capture at follow up

    Time frame: From Implant through 12 Months

  3. Freedom From Device-or Procedure-Related Serious Adverse Events

    Short Term Safety will be assessed through 90 days following implantation, including: 1\. Freedom from device- or procedure-related serious adverse events (SAEs) through 90 days

    Time frame: Up to 90 days following implant

Other outcomes

  1. Tricuspid Valve Parameters

    Tricuspid Valve Parameters: Tricuspid valve function, including assessment of Tricuspid Valve Regurgitation will be assessed per TTVI protocol, or at 6 months during this investigation.

    Time frame: 6 Months Post Implant

07

Study locations

1 site
08

References and documents

Individual participant data

Plan to share: No

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reached

Start is estimated for Nov 2026; primary completion for Jan 2028, 14 months later.

How these figures are worked out, and which studies are left out of them.

Registered
Aug 27, 2026
First posted
Sep 4, 2026
StartEst.
Nov 2026
Primary completionEst.
Jan 2028
CompletionEst.
Jan 2028
Last update
Sep 4, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Sep 4, 2026, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT07805525
Lead sponsor
Minneapolis Heart Institute Foundation
Collaborators
Cara Medical Ltd
Responsible party
Sponsor
First posted
Sep 4, 2026
Start date
Nov 2026 (estimated)
Primary completion
Jan 2028 (estimated)
Completion
Jan 2028 (estimated)
Last update
Sep 4, 2026

Study contacts

Efrah M Hussein, BS
Contact
Efrah.Hussein@allina.com
612-863-0666
Dawn R Witt, PhD
Contact
Dawn.Witt@allina.com
612-385-8299
John S Zakaib, MD
principal investigator · Minneapolis Heart Institute

Oversight

Data monitoring committee
Yes
FDA-regulated drug
No
FDA-regulated device
Yes
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Sep 2026. You cannot join it, but the record below documents what was studied.

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Discussion

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