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Short-term Clinical Feasibility of the New Provox Vega 22.5 Voice Prosthesis

Second Amendment on Phase I Trial NO7VEG 'Assessment of a Next Generation Indwelling Provox Voice Rehabilitation System (Vega)': Vega Siri Addendum.

Status
Completed
Phases
Phase 1Phase 2
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT00743262
Enrollment
15
Registered
2008-08-28
Start date
2008-04-30
Completion date
2009-04-30
Last updated
2023-07-25

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Total Laryngectomy

Keywords

laryngectomy, larynx cancer

Brief summary

The purpose of this study is to investigate the performance of a new voice prosthesis in comparison with the Provox2 and the Provox ActiValve voice prosthesis in 15 laryngectomized patients. Factors taken into account are clinician and patient satisfaction with the insertion system, patient satisfaction with voice, speech, performance, and maintenance. Voice and speech will also be evaluated for the different prostheses by means of perceptual evaluations and acoustic analysis.

Interventions

DEVICEProvox voice prosthesis

The current voice prosthesis (Provox ActiValve)of the patients will be removed and a new prosthesis (Provox Vega) will be inserted

Sponsors

The Netherlands Cancer Institute
CollaboratorOTHER
Atos Medical AB
Lead SponsorINDUSTRY

Study design

Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
TREATMENT
Masking
NONE

Eligibility

Sex/Gender
ALL
Age
18 Years to No maximum
Healthy volunteers
No

Inclusion criteria

* Total laryngectomy * Use Provox ActiValve

Exclusion criteria

* Current problems with TE puncture

Design outcomes

Primary

MeasureTime frameDescription
Short-term Feasibility Provox Vega 22.5 French3 weeksNumber of participants in whom the voice prosthesis was considered feasible in the short-term with regards to clinical and technical aspects as judged by patient and investigator.

Secondary

MeasureTime frameDescription
Subjective Voice and Speech Quality3 weeksSubjective participant opinion using a structured questionnaire addressing intelligibility face to face and on the phone, loudness, pitch and fluency. Each question was measured on a four point scale. Scores were summated, best possible score is 5, worst possible score is 20.
Device Life Timeone yearDevice life time of the Provox Vega in days for replacement for leakage through the device. This is expected to be short (average about 3 weeks) since the Provox Vega 22.5 was tested in patients who normally use a Provox ActiValve. (Provox ActiValve is a problem solving prostheses used in patients who need frequent replacement of regular Provox voice prostheses short that are made of the same materials as the Provox Vega 22.5.)

Countries

Netherlands

Participant flow

Participants by arm

ArmCount
Provox Vega 22.5 French
A group of laryngectomized Provox ActiValve users tested the Provox Vega 22.5 French voice prosthesis for 3 weeks.
15
Total15

Baseline characteristics

CharacteristicProvox Vega 22.5 French
Age, Categorical
<=18 years
0 Participants
Age, Categorical
>=65 years
7 Participants
Age, Categorical
Between 18 and 65 years
8 Participants
Age, Continuous65.33 years
STANDARD_DEVIATION 12.03
Region of Enrollment
Netherlands
15 patients
Sex: Female, Male
Female
1 Participants
Sex: Female, Male
Male
14 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
— / —
other
Total, other adverse events
0 / 15
serious
Total, serious adverse events
0 / 15

Outcome results

Primary

Short-term Feasibility Provox Vega 22.5 French

Number of participants in whom the voice prosthesis was considered feasible in the short-term with regards to clinical and technical aspects as judged by patient and investigator.

Time frame: 3 weeks

ArmMeasureValue (NUMBER)
Provox Vega 22.5 FrenchShort-term Feasibility Provox Vega 22.5 French15 Patients
Secondary

Device Life Time

Device life time of the Provox Vega in days for replacement for leakage through the device. This is expected to be short (average about 3 weeks) since the Provox Vega 22.5 was tested in patients who normally use a Provox ActiValve. (Provox ActiValve is a problem solving prostheses used in patients who need frequent replacement of regular Provox voice prostheses short that are made of the same materials as the Provox Vega 22.5.)

Time frame: one year

ArmMeasureValue (MEAN)Dispersion
Provox Vega 22.5 FrenchDevice Life Time39.7 daysStandard Deviation 33
Secondary

Subjective Voice and Speech Quality

Subjective participant opinion using a structured questionnaire addressing intelligibility face to face and on the phone, loudness, pitch and fluency. Each question was measured on a four point scale. Scores were summated, best possible score is 5, worst possible score is 20.

Time frame: 3 weeks

ArmMeasureValue (MEAN)Dispersion
Provox Vega 22.5 FrenchSubjective Voice and Speech Quality6 units on a scaleStandard Deviation 1.5

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026