Clinical trial NCT01671176: Wide Diameter Bone Anchored Implant Study
Official title: A Clinical Study of the Oticon Medical Ponto 4.5mm Wide Implant
Study type: INTERVENTIONAL
Overall status: COMPLETED
Phase: NA
Conditions: Conductive Hearing Loss
Conductive and Sensori-neural Hearing Loss in the Same Ear
Unilateral, Profound Sensori-neural Hearing Loss
Keywords: Wide diameter implant
ISQ
Ponto
Bone anchored implant
Lead sponsor: Oticon Medical
Sponsor class: INDUSTRY
First posted: 2012-08-23
Enrollment: 30
Sex: ALL
Minimum age (years): 18
Standard ages: ADULT
OLDER_ADULT
Accepts healthy volunteers: yes
Allocation: NA
Intervention model: SINGLE_GROUP
Primary purpose: TREATMENT

Brief summary: To assess implant stability, implant loss, adverse skin reactions, and Quality of Life Benefit following implantation of the Ponto 4.5mm Wide Diameter implant. Secondary: to determine the feasibility of fitting the sound processor 3 weeks after surgical implantation, and to investigate if the type of skin reactions following implantation could be related to the demographic data of subjects and the type of surgical technique used

Detailed description: Bone-anchored hearing systems have been an amplification choice for conductive, mixed, and profound, unilateral, sensorineural hearing loss for over three decades. So far, about 75,000 patients worldwide have received this surgical intervention (bone-anchored hearing system), since its first successful implantation in 1977. In 2009, Oticon Medical, LLC launched its bone-anchored hearing system called Ponto. In just over two years, the Ponto has been successfully implanted in over 3,000 patients by leading otolaryngologists and neurotologists in 18 countries worldwide.

The Ponto implant has previously been available with a 3.75mm diameter and comes in two lengths: 3mm and 4mm. Anew Ponto implant that is 4.5mm wide in diameter is now available in both 3mm and 4mm lengths. This Wide Diameter implant is designed to maximize bone-to-implant contact area and enhance implant stability which can potentially allow loading of the sound processor as early as 3 weeks after surgery. The abutment screw incorporates external threads at the screw head to make it possible to connect a SmartPeg (Osstell, Goteborg, Sweden) for stability measurements. All Ponto implants have the same universal implant-abutment interface. Therefore, they are fully compatible with existing instruments and abutments. Two new countersinks have been developed for the new Ponto Wide Diameter implant. The drill size of the countersink is 3.80mm. It is marked with a "W" to separate them from existing drills. All products are CE-marked and cleared for the US market by the FDA.

Objectives The present study will attempt to show that the Ponto 4.5mm Wide Diameter implant has similar or better outcomes in terms of Quality of Life (QoL) benefit; implant extrusion and revision surgery when compared to the 3.75mm diameter implant. Secondary objectives to be studied will include adverse skin reactions, the feasibility of fitting the sound processor three weeks after surgical implantation, and investigation to see if the type of skin reactions observed following implantation could be related to the demographic data of subjects or the type of surgical technique used.

Study Design This study is a prospective, multicenter study of subjects' demographic and implant data. Subjects will be enrolled at two US sites.

Subject Population Twenty adult subjects 18 years or older will be included in the study from each participating partner site.

Eligibility criteria: Inclusion Criteria:

* conductive, mixed or single sided deafness
* 18 years of age or older

Exclusion Criteria:

* younger than 18 years of age

Primary outcomes:
measure: Holger's Scale
timeFrame: 1 week, 3 weeks, 6 weeks, 3 months, 6 months and 12 months
measure: Implant Stability as Measured by the Osstell Implant Stability Quotient in the Vertical and Horizontal Plane
timeFrame: At surgery, 1 week, 3 weeks, 6 weeks, 12 weeks, 6 months and 12 months
Secondary outcomes:
Other outcomes:
Locations:
city: Sarasota
country: United States
facility: Silverstein Institute
state: Florida
city: Farmington Hills
country: United States
facility: Michigan Ear Institute
state: Michigan
Study officials:
affiliation: Sarasota Ear Institute
name: Jack Wazen, MD
role: PRINCIPAL_INVESTIGATOR
References:
citation: Wazen JJ, Babu S, Daugherty J, Metrailer A. Three-week loading of the 4.5mm wide titanium implant in bone anchored hearing systems. Am J Otolaryngol. 2016 Mar-Apr;37(2):132-5. doi: 10.1016/j.amjoto.2015.08.005. Epub 2015 Aug 18.