Independent directory Public ClinicalTrials.gov records United States
Clinical Trials Finder
Objective public record navigation
Search Results

Search by objective public record fields.

Search by query text, NCT ID, condition, intervention, sponsor, city, state, recruitment status, phase, study type, healthy volunteer eligibility, sex, or age. Results are retrieved from ClinicalTrials.gov and synchronized into the directory. Search pages remain noindex by default.

Clear filters
ClinicalTrials.gov public records Last synced Sep 5, 2026, 7:16 AM EDT

Data is sourced from official ClinicalTrials.gov public API records. Always review the official ClinicalTrials.gov record for the latest information.

Showing 1–24 of 53 matching trials from the live ClinicalTrials.gov search.
Local D1 index available.
Filters: Intervention: Collar Clear all
Not listed Not applicable Interventional

A Pilot Study Comparing Oxygen Delivery Via Helmet Interface Versus High Flow Nasal Cannula

NCT04035460
View directory record Official record
Conditions
Hypoxemic Respiratory Failure
Interventions
Helmet, High Flow Nasal Oxygen
Device
Lead sponsor
Baystate Medical Center
Other
Eligibility
18 Years and older
Enrollment
1 participant
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2022
U.S. locations
1
States / cities
Springfield, Massachusetts
Source: ClinicalTrials.gov public record
Updated Jul 21, 2021 · Synced Sep 5, 2026, 7:16 AM EDT
Completed Not applicable Interventional Results available

Aerosol Particle Concentrations Among Different Oxygen Devices for Spontaneous Breathing Patients With Tracheostomy

NCT04654754
View directory record Official record
Conditions
Transmission, Patient-Professional
Interventions
high-flow high humidity oxygen device with tracheostomy adapter
Device
Lead sponsor
Jie Li
Other
Eligibility
18 Years to 90 Years
Enrollment
12 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2020 – 2021
U.S. locations
1
States / cities
Chicago, Illinois
Source: ClinicalTrials.gov public record
Updated Dec 20, 2022 · Synced Sep 5, 2026, 7:16 AM EDT
Completed Phase 1 Interventional

The Pathophysiology of Orthostatic Hypotension

NCT00748059
View directory record Official record
Conditions
Autonomic Nervous System Diseases, Orthostatic Hypotension, Dopamine Beta-Hydroxylase Deficiency, Orthostatic Intolerance
Interventions
Standing or upright tilt, Microneurography, QSweat, neck cuff stimulation, phenylephrine,isoproterenol,nitroprusside,propranolol,edrophonium,atropine,tyramine, clonidine,yohimbine,metoclopramide,alpha-methyldopa, BodPod, Eye exam, Sleep study, Pain response testing, Metabolic chamber, Brain function studies, Bicycle Exercise Test
Procedure · Device · Drug
Lead sponsor
Vanderbilt University Medical Center
Other
Eligibility
12 Years to 70 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
1996 – 2020
U.S. locations
1
States / cities
Nashville, Tennessee
Source: ClinicalTrials.gov public record
Updated May 11, 2021 · Synced Sep 5, 2026, 7:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Brain Dynamics in Response to Jugular Vein Compression

NCT03236389
View directory record Official record
Conditions
Concussion, Mild
Interventions
Q Collar
Device
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
7 Years to 40 Years
Enrollment
40 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2020
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Jan 25, 2023 · Synced Sep 5, 2026, 7:16 AM EDT
Terminated Not applicable Interventional Accepts healthy volunteers

Impact of Manikin Training on Airtraq Avant Learning Curve in Predicted Difficult Airways

NCT01720017
View directory record Official record
Conditions
Education, Training, Manikin
Interventions
Preclinical Manikin Training, Inservice Training
Other
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
18 Years and older
Enrollment
30 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2012 – 2014
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 1, 2015 · Synced Sep 5, 2026, 7:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Protection Against Potential Brain Injury During Competitive Football

NCT02696200
View directory record Official record
Conditions
Concussion
Interventions
Q Collar
Device
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
14 Years to 19 Years
Enrollment
62 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2017
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Dec 8, 2020 · Synced Sep 5, 2026, 7:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Performance of MicroTextured Dental Implants

NCT01821417
View directory record Official record
Conditions
Partially Edentulous Jaw
Interventions
Microtextured dental implant treatment, Dental implant treatment
Device
Lead sponsor
University of Alabama at Birmingham
Other
Eligibility
19 Years and older
Enrollment
68 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2011 – 2015
U.S. locations
1
States / cities
Birmingham, Alabama
Source: ClinicalTrials.gov public record
Updated Mar 15, 2017 · Synced Sep 5, 2026, 7:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Novel Helmet Design in Patients With Seizures

NCT03443388
View directory record Official record
Conditions
Drug Resistant Epilepsy, Drop Seizures, Generalized Tonic Clonic Seizure, Complex Partial Seizure, Fall Due to Seizure
Interventions
Hövding inflatable helmet
Device
Lead sponsor
Michael A. Gelfand, MD, PhD
Other
Eligibility
18 Years to 60 Years
Enrollment
9 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Jan 8, 2025 · Synced Sep 5, 2026, 7:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Internal Jugular Vein Compression Collar for Novel Symptomatic Treatment of Venous Pulsatile Tinnitus

NCT05441540
View directory record Official record
Conditions
Pulsatile Tinnitus
Interventions
Internal Jugular Vein Compression Collar
Device
Lead sponsor
University of North Carolina, Chapel Hill
Other
Eligibility
18 Years and older
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022 – 2023
U.S. locations
1
States / cities
Chapel Hill, North Carolina
Source: ClinicalTrials.gov public record
Updated Apr 15, 2024 · Synced Sep 5, 2026, 7:16 AM EDT
Completed No phase listed Observational

CTTI Risk Factors for HABP/VABP Study

NCT02689531
View directory record Official record
Conditions
Pneumonia, Ventilator-Associated, Pneumonia, Bacterial, Pneumonia, Hospital-Acquired
Interventions
Not listed
Lead sponsor
Duke University
Other
Eligibility
Not listed
Enrollment
7,530 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016 – 2018
U.S. locations
15
States / cities
Birmingham, Alabama • Los Angeles, California • Chicago, Illinois + 12 more
Source: ClinicalTrials.gov public record
Updated Jun 14, 2023 · Synced Sep 5, 2026, 7:16 AM EDT
Completed No phase listed Observational

Study: C-Collar and Dysphagia

NCT03349125
View directory record Official record
Conditions
Dysphagia
Interventions
Collar On, Collar Off
Behavioral
Lead sponsor
University of Wisconsin, Madison
Other
Eligibility
60 Years and older
Enrollment
23 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2013 – 2018
U.S. locations
1
States / cities
Madison, Wisconsin
Source: ClinicalTrials.gov public record
Updated Oct 1, 2019 · Synced Sep 5, 2026, 7:16 AM EDT
Completed No phase listed Observational Accepts healthy volunteers

Usability and Tolerability of Novel Protection Device Against Potential Brain Injury During Competitive Sport

NCT03318822
View directory record Official record
Conditions
Brain Injuries, Traumatic, Brain Injury Traumatic Mild
Interventions
Q-Collar
Device
Lead sponsor
Emory University
Other
Eligibility
14 Years to 49 Years
Enrollment
200 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2017 – 2020
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated May 5, 2021 · Synced Sep 5, 2026, 7:16 AM EDT
Recruiting Not applicable Interventional

Hard Cervical Collar Use Following Posterior Cervical Fusion

NCT07789288
View directory record Official record
Conditions
Spinal Stenosis Cervical, Radiculopathy, Cervical Region, Posterior Cervical Fusion, Spondylosis, Cervical
Interventions
Hard Cervical Collar
Device
Lead sponsor
Georgetown University
Other
Eligibility
18 Years and older
Enrollment
150 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2026 – 2028
U.S. locations
2
States / cities
Washington D.C., District of Columbia
Source: ClinicalTrials.gov public record
Updated Aug 26, 2026 · Synced Sep 5, 2026, 7:16 AM EDT
Completed Not applicable Interventional

Collar Use for Cervical Radicular Pain

NCT04163939
View directory record Official record
Conditions
Cervical Radiculopathy
Interventions
Vista Therapy Collar, Placebo
Other
Lead sponsor
Rhode Island Hospital
Other
Eligibility
18 Years and older
Enrollment
71 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2017 – 2022
U.S. locations
1
States / cities
Providence, Rhode Island
Source: ClinicalTrials.gov public record
Updated Jan 30, 2023 · Synced Sep 5, 2026, 7:16 AM EDT
Terminated Not applicable Interventional Results available

Pilot Study of cNEP for the Treatment of Snoring

NCT02767843
View directory record Official record
Conditions
Snoring
Interventions
continuous negative external pressure (cNEP)
Device
Lead sponsor
Sommetrics, Inc.
Industry
Eligibility
18 Years to 70 Years
Enrollment
4 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2016
U.S. locations
1
States / cities
Alameda, California
Source: ClinicalTrials.gov public record
Updated May 6, 2024 · Synced Sep 5, 2026, 7:16 AM EDT
Recruiting Not applicable Interventional Accepts healthy volunteers

Evaluating Q-Collar Effects on Brain Blood Flow Control During Exercise

NCT06826781
View directory record Official record
Conditions
Healthy
Interventions
Q30 Q-Collar, Not wearing Q-Collar
Device · Other
Lead sponsor
Spaulding Rehabilitation Hospital
Other
Eligibility
18 Years to 30 Years
Enrollment
20 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2025 – 2026
U.S. locations
1
States / cities
Cambridge, Massachusetts
Source: ClinicalTrials.gov public record
Updated Oct 26, 2025 · Synced Sep 5, 2026, 7:16 AM EDT
Terminated Phase 2 Interventional Results available

PTH Analog Type II Odontoid Fracture

NCT04760782
View directory record Official record
Conditions
Odontoid Fracture
Interventions
Abaloparatide, Hard collar immobilization
Drug · Device
Lead sponsor
David Lunardini
Other
Eligibility
50 Years and older
Enrollment
22 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2023
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Sep 18, 2024 · Synced Sep 5, 2026, 7:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Temperature Evaluation by MRI Thermometry During Cervical Cooling

NCT02431026
View directory record Official record
Conditions
Healthy
Interventions
Cooling pack activated Excel Cryo Cooling Collar
Device
Lead sponsor
University of Vermont
Other
Eligibility
18 Years to 60 Years
Enrollment
6 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2015 – 2016
U.S. locations
1
States / cities
Burlington, Vermont
Source: ClinicalTrials.gov public record
Updated Sep 6, 2016 · Synced Sep 5, 2026, 7:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Sex and Age Ultrasound Response to Differential Jugular Vein Pressure

NCT03017937
View directory record Official record
Conditions
Concussion, Mild
Interventions
Q-collar
Device
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
7 Years to 60 Years
Enrollment
155 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2019
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Nov 16, 2020 · Synced Sep 5, 2026, 7:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers

Comparison Of Effective Radiation Shielding Between Rampart IC, M1128 Shield vs Conventional Apron And Shields In Clinical Interventional Procedures

NCT05347290
View directory record Official record
Conditions
Radiation Exposure
Interventions
Rampart IC, M1128, Lead Apron and Ancillary Shield, Rampart IC, M1128 and Lead Apron
Device
Lead sponsor
Northwell Health
Other
Eligibility
18 Years and older
Enrollment
63 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2022
U.S. locations
1
States / cities
New York, New York
Source: ClinicalTrials.gov public record
Updated Feb 2, 2023 · Synced Sep 5, 2026, 7:16 AM EDT
Not listed Not applicable Interventional

Randomized, Controlled Trial of Posterior C1-2 Fusion Versus Bracing Alone for Treatment of Type II Odontoid Process Fractures in the Elderly

NCT03788200
View directory record Official record
Conditions
Odontoid Fracture
Interventions
Bracing, posterior C1-C2 instrumented fusion
Procedure
Lead sponsor
Rothman Institute Orthopaedics
Other
Eligibility
65 Years and older
Enrollment
200 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2020
U.S. locations
1
States / cities
Philadelphia, Pennsylvania
Source: ClinicalTrials.gov public record
Updated Dec 27, 2018 · Synced Sep 5, 2026, 7:16 AM EDT
Completed Not applicable Interventional Accepts healthy volunteers Results available

Novel Protection Against Potential Brain, Hearing and Vision Injury During Blast Wave Exposure

NCT03017924
View directory record Official record
Conditions
Concussion, Mild
Interventions
Q collar
Device
Lead sponsor
Children's Hospital Medical Center, Cincinnati
Other
Eligibility
18 Years and older
Enrollment
23 participants
Healthy volunteers
Accepts healthy volunteers
Timeline
2016 – 2017
U.S. locations
1
States / cities
Cincinnati, Ohio
Source: ClinicalTrials.gov public record
Updated Feb 15, 2021 · Synced Sep 5, 2026, 7:16 AM EDT
Active, not recruiting Not applicable Interventional

Insignia™ Hip Stem Outcomes Study

NCT05144191
View directory record Official record
Conditions
Hip Osteoarthritis, Avascular Necrosis, Rheumatoid Arthritis, Post-traumatic Osteoarthritis, Femoral Neck Fractures, Trochanteric Fractures, Surgery
Interventions
Insignia uncemented Hip Stem
Device
Lead sponsor
Stryker Orthopaedics
Industry
Eligibility
18 Years and older
Enrollment
313 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2022 – 2034
U.S. locations
11
States / cities
Phoenix, Arizona • San Francisco, California • Chicago, Illinois + 8 more
Source: ClinicalTrials.gov public record
Updated May 17, 2026 · Synced Sep 5, 2026, 7:16 AM EDT
Recruiting Not applicable Interventional

Personalized Treatment in Thyroid Disorders

NCT03517579
View directory record Official record
Conditions
Thyroid Cancer, Graves Disease
Interventions
Cervical Collar Therapy Indicator (COTI)
Device
Lead sponsor
Johns Hopkins University
Other
Eligibility
21 Years to 65 Years
Enrollment
10 participants
Healthy volunteers
Healthy volunteers not accepted
Timeline
2018 – 2027
U.S. locations
1
States / cities
Baltimore, Maryland
Source: ClinicalTrials.gov public record
Updated Oct 14, 2025 · Synced Sep 5, 2026, 7:16 AM EDT