- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT04606823
Ponto Implantation Using a Minimally Invasive Surgical Technique
Evaluation of Clinical Performance of Ponto Implantation Using a Minimally Invasive Surgical Technique - a Prospective Multicentre Study
This multi-centre study funded by Oticon Medical AB will be conducted at seven hospitals across Europe (UK, Sweden, Denmark and the Netherlands). In total, 50 adult patients with a hearing loss that are already planned for treatment with a percutaneous (through the skin) bone-anchored hearing system (BAHS) will be included in the study.
The purpose of the study is to investigate the rate of successful BAHS use after implantation of the Ponto implant system using a minimally invasive surgical technique.
Study Overview
Status
Conditions
Detailed Description
This multi-centre study funded by Oticon Medical AB will be conducted at seven hospitals across Europe (UK, Sweden, Denmark and the Netherlands). In total, 50 adult patients with a hearing loss that are already planned for treatment with a percutaneous (through the skin) bone-anchored hearing system (BAHS) will be included in the study.
The purpose of the study is to investigate the rate of successful BAHS use after implantation of the Ponto implant system using a minimally invasive surgical technique. The implant, coupled to a skin-penetrating abutment, is implanted in the bone behind the ear and is later loaded with a sound processor which transforms sound waves to sound vibrations that can be sent directly to the inner ear via the skull bone. The primary objective of this study is to investigate the proportion of implant/abutment complexes providing a reliable anchorage for a sound processor three months after implantation/surgery.
Study Type
Enrollment (Actual)
Phase
- Not Applicable
Contacts and Locations
Study Locations
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Aalborg, Denmark, 9000
- Aalborg University Hospital
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Groningen, Netherlands
- Univerisity Medical Center Groningen
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Nijmegen, Netherlands, 6525EX
- Radboud University Medical Center
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Gothenburg, Sweden, 413 46
- Sahlgrenska University Hospital
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Birmingham, United Kingdom, B15 2WB
- University Hospitals Birmingham NHS Foundation Trust
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Cambridge, United Kingdom, CB2 0QQ
- Cambridge University Hospitals NHS Foundation Trust
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London, United Kingdom, SE1 7EH
- Guy's and St Thomas' NHS Foundation Trust
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Description
Inclusion Criteria:
- 18 years of age or older
- Patient indicated for surgical intervention with a bone anchored hearing system
- Signed informed consent
- Adequate bone quality to allow for a Ponto implant insertion, as judged by the investigator, and an expected bone thickness above 5 mm, where no complications during surgery are expected
- Skin thickness of 12 mm or less at the implant site
Exclusion Criteria:
- Patient undergoing re-implantation
- Patient who are unable or unwilling to follow investigational procedures/requirements, e.g. to complete quality of life scales
- Known condition or previous treatment that could jeopardize skin condition and wound healing over time as judged by the investigator (e.g. uncontrolled diabetes, previous radiotherapy in the area of interest)
- Known medical condition that contraindicate surgery as judged by the investigator
- Known and/or planned pregnancy at time of surgery
- Any other known condition that the investigator determines could interfere with compliance or investigation assessments
- Simultaneous participation in another clinical investigation with pharmaceutical and/or medical device which might cause interference with investigation participation
Study Plan
How is the study designed?
Design Details
- Primary Purpose: Treatment
- Allocation: N/A
- Interventional Model: Single Group Assignment
- Masking: None (Open Label)
Arms and Interventions
Participant Group / Arm |
Intervention / Treatment |
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Other: Single-arm
In this single-arm study the patients will be undergoing a minimally invasive surgery after which they will re-visit the clinic at five occasions for follow-up visits (1-3 extra compared to routine clinical practice at the hospitals) and complete a quality of life-questinnaire three months after surgery.
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The subjects will be implanted with a bone anchored hearing system using a minimally invasive surgery.
A quality of life-questionnaire is to be completed by the subjects at one occasion.
There are 1-3 additional follow-up visits after surgery (compared to the routine clinical practice of the surgeons/clinics).
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Implant/abutment complex capability to provide a reliable anchorage for a sound processor
Time Frame: 3 months after implant surgery
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The variables assessed to determine reliable anchorage in the study are implant survival and stability, skin reactions, skin overgrowth and pain preventing use of the sound processor.
For a positive outcome of the primary endpoint (reliable anchorage), the implant should be in place and stable without any adverse skin reactions, skin overgrowth or pain preventing usage of the sound processor.
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3 months after implant surgery
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Secondary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Implant stability
Time Frame: 12 months after implant surgery
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Clinical assessment of implant stability by the investigator by means of a Yes/No question: Implant stable [Yes/No]
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12 months after implant surgery
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Implant/abutment complex capability to provide reliable anchorage for sound processor
Time Frame: 12 months after implant surgery
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The variables assessed to determine reliable anchorage in the study are implant survival and stability, skin reactions, skin overgrowth and pain preventing use of the sound processor.
For a positive outcome (reliable anchorage), the implant should be in place and stable without any adverse skin reactions, skin overgrowth or pain preventing usage of the sound processor.
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12 months after implant surgery
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Implant survival
Time Frame: 12 months after implant surgery
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Implant survival will be assessed by the investigator by means of a Yes/No question: Implant in place [Yes/No]
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12 months after implant surgery
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Holgers score distribution
Time Frame: 12 months after implant surgery
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Distribution of Holgers score ratings (scale 0-4), where a higher score corresponds to a poorer outcome, assigned by investigator.
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12 months after implant surgery
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Max Holgers score
Time Frame: 12 months after implant surgery
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Max Holgers score rating (scale 0-4) per patient across study visits, where a higher score corresponds to a poorer outcome, assigned by investigator.
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12 months after implant surgery
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Mild/Adverse skin reaction
Time Frame: 12 months after implant surgery
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Mild/Adverse skin reaction per patient across study visits, where adverse skin reaction is defined as Holgers ≥ 2 on at least one follow-up visit.
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12 months after implant surgery
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IPS (Inflammation, Pain, Skin height) scores
Time Frame: 12 months after implant surgery
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Distribution of IPS scores (Inflammation score 0-4; Pain score 0-2; Skin height score 0-2) assigned by investigator.
The IPS score is presented as [Ix Px Sx] with x being the individual score for each parameter.
A higher score corresponds to a poorer outcome.
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12 months after implant surgery
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Wound healing
Time Frame: 12 months after implant surgery
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Investigator assessment of wound being completely healed by means of a Yes/No question.
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12 months after implant surgery
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Skin dehiscence
Time Frame: 12 months after implant surgery
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Prevalence of skin dehiscence around the abutment measured as millimeters of dehiscence.
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12 months after implant surgery
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Skin overgrowth
Time Frame: 12 months after implant surgery
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Skin overgrowth over implant/abutment complex judged by the investigator by means of a Yes/No question.
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12 months after implant surgery
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Post-operative events around abutment
Time Frame: 12 months after implant surgery
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Assessment of post-operative events by the investigator.
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12 months after implant surgery
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Patient-perceived presence of pain around abutment
Time Frame: 12 months after implant surgery
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Assessment of presence of patient-perceived pain by means of a Yes/No question to the subject.
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12 months after implant surgery
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Patient-perceived magnitude of pain around abutment
Time Frame: 12 months after implant surgery
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Assessment of magnitude of patient-perceived pain using a numerical rating scale (range 0-10), where a higher rating corresponds to a poorer outcome.
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12 months after implant surgery
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Patient-perceived presence of numbness around abutment
Time Frame: 12 months after implant surgery
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Assessment of presence of patient-perceived numbness by means of a Yes/No question to the patient.
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12 months after implant surgery
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Patient-perceived magnitude of numbness around abutment
Time Frame: 12 months after implant surgery
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Assessment of magnitude of patient-perceived numbness using a numerical rating scale (range 0-10), where a higher rating corresponds to a poorer outcome.
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12 months after implant surgery
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Duration of surgery
Time Frame: 3 months after implant surgery
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Length of surgery measured in minutes.
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3 months after implant surgery
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Sound processor usage
Time Frame: 12 months after implant surgery
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Average sound processor usage time.
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12 months after implant surgery
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Subjective benefit after surgery
Time Frame: 3 months after surgery
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Glasgow Benefit Inventory (GBI) questionnaire score (-100 to +100), where [-100] means maximum adverse effect, [0] means no effect, and [+100] means maximum positive effect.
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3 months after surgery
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Other Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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Safety outcome - Adverse events
Time Frame: 12 months after surgery
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Number and severity of adverse events related to the investigational device and corresponding procedures.
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12 months after surgery
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Safety outcome - Device deficiences
Time Frame: 12 months after surgery
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Number and severity of device deficiencies.
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12 months after surgery
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Collaborators and Investigators
Sponsor
Investigators
- Principal Investigator: Harry Powell, MD, Guy's and St Thomas' NHS Foundation Trust
Study record dates
Study Major Dates
Study Start (Actual)
Primary Completion (Actual)
Study Completion (Actual)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (Actual)
Study Record Updates
Last Update Posted (Actual)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- BC108
Drug and device information, study documents
Studies a U.S. FDA-regulated drug product
Studies a U.S. FDA-regulated device product
product manufactured in and exported from the U.S.
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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