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Evaluation of a Powered Ankle Prosthesis Capable of Bidirectional Control Via Neural Recording and Cutaneous Stimulation in Free-Space and Walking Tasks

11. juni 2026 opdateret af: Christopher Shallal, Massachusetts Institute of Technology
The purpose of this study is to evaluate the performance of a powered ankle prosthesis capable of bidirectional control via neural recording and cutaneous stimulation, during free-space and walking tasks. This research aims to assess the sense of embodiment with the device, gait symmetry, and stability of a person with lower-extremity amputation walking with a powered ankle and their prescribed prosthesis. Findings from this study will inform future developments in bionic ankle design with optimal integration with the human body, with the goal of improving prosthetic integration into daily life.

Studieoversigt

Status

Rekruttering

Betingelser

Intervention / Behandling

Detaljeret beskrivelse

In summary there will be 3 cohorts in this study, 1) a group of subjects that have an osseointegrated fixture with implanted electrodes, 2) a group that does not have implanted electrodes, and 3) non-amputee healthy control group to serve as a baseline comparison. In summary, the groups will be asked to wear a number of non-invasive sensors and the amputee groups will use a powered ankle prosthesis in place of their customary prosthesis. Data will be collected from various wearable sensors and other motion-capture devices as the subjects walk. At certain points during the study, the control settings of the powered prosthesis will be adjusted, either manually or automatically. Trials will also be conducted with the subjects prescribed prosthesis.

Undersøgelsestype

Interventionel

Tilmelding (Anslået)

10

Fase

  • Ikke anvendelig

Kontakter og lokationer

Dette afsnit indeholder kontaktoplysninger for dem, der udfører undersøgelsen, og oplysninger om, hvor denne undersøgelse udføres.

Studiesteder

  • Forenede Stater
    • Massachusetts
      • Cambridge, Massachusetts, Forenede Stater, 02139
        • Rekruttering
        • MIT Media Lab
        • Kontakt:
          • Christopher Shallal, B.S.
          • Telefonnummer: 704-904-6112
          • E-mail: cshallal@mit.edu

Deltagelseskriterier

Forskere leder efter personer, der passer til en bestemt beskrivelse, kaldet berettigelseskriterier. Nogle eksempler på disse kriterier er en persons generelle helbredstilstand eller tidligere behandlinger.

Berettigelseskriterier

Aldre berettiget til at studere

  • Voksen
  • Ældre voksen

Tager imod sunde frivillige

Ja

Beskrivelse

Inclusion Criteria:

  • Male or Female age 18-70. The patient must have a unilateral transtibial amputation . The patient must have the ability to ambulate at variable cadence (an expected lower extremity prosthesis functional level of K3 or above).

The patient must have adequate socket to support the device.

Exclusion Criteria:

  • Women who are pregnant. Severe co morbidity, atypical skeletal anatomy, or poor general physical/mental health that, in the opinion of the Investigator, will not allow the subject to be a good study candidate (i.e. other disease processes, mental capacity, substance abuse, shortened life expectancy, vulnerable patient population, BMI >40, etc.).

Studieplan

Dette afsnit indeholder detaljer om studieplanen, herunder hvordan undersøgelsen er designet, og hvad undersøgelsen måler.

Hvordan er undersøgelsen tilrettelagt?

Design detaljer

  • Primært formål: Enhedens gennemførlighed
  • Tildeling: Ikke-randomiseret
  • Interventionel model: Enkelt gruppeopgave
  • Maskning: Ingen (Åben etiket)

Våben og indgreb

Deltagergruppe / Arm
Intervention / Behandling
Eksperimentel: Powered Prosthesis
The subject will be provided with a powered ankle prosthesis to attach in place of their customary prosthesis. This powered prosthesis has the capability of providing active neural control of an ankle joint, and its control can be adjusted through a wireless link. The subject will be given as much time as necessary to practice using the prosthesis before the experiments begin.
Enhed: Powered Prosthesis
This powered prosthesis has the capability of providing active neural control of an ankle joint, and its control can be adjusted through a wireless link. It is motorized to provide positive power during walking.
Aktiv komparator: Prescribed Prosthesis
The subject will be undergo the same experiments with their prescribed ankle prosthesis to act as a comparison to the standard of care.
Enhed: Prescribed Prosthesis
Subject's prescribed prosthesis

Hvad måler undersøgelsen?

Primære resultatmål

Resultatmål
Foranstaltningsbeskrivelse
Tidsramme
Kinematic Measures of Lower-Limb Biomechanics
Tidsramme: Multiple sessions across 1-2 weeks
Quantitative analysis of lower-limb kinematics (joint angles in degrees) during level-ground walking, stair navigation, and other functional tasks.
Multiple sessions across 1-2 weeks
Kinetic Measures of Lower-Limb Biomechanics
Tidsramme: Multiple sessions across 1-2 weeks
Quantitative analysis of kinetic biomechanics including ground reaction and joint forces (Newtons) during level-ground walking, stair navigation, and other functional tasks.
Multiple sessions across 1-2 weeks

Samarbejdspartnere og efterforskere

Det er her, du vil finde personer og organisationer, der er involveret i denne undersøgelse.

Sponsor

Massachusetts Institute of Technology

Datoer for undersøgelser

Disse datoer sporer fremskridtene for indsendelser af undersøgelsesrekord og resumeresultater til ClinicalTrials.gov. Studieregistreringer og rapporterede resultater gennemgås af National Library of Medicine (NLM) for at sikre, at de opfylder specifikke kvalitetskontrolstandarder, før de offentliggøres på den offentlige hjemmeside.

Studer store datoer

Studiestart (Faktiske)

21. oktober 2025

Primær færdiggørelse (Anslået)

30. september 2030

Studieafslutning (Anslået)

30. september 2031

Datoer for studieregistrering

Først indsendt

2. marts 2026

Først indsendt, der opfyldte QC-kriterier

11. juni 2026

Først opslået (Faktiske)

12. juni 2026

Opdateringer af undersøgelsesjournaler

Sidste opdatering sendt (Faktiske)

12. juni 2026

Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier

11. juni 2026

Sidst verificeret

1. juni 2026

Mere information

Begreber relateret til denne undersøgelse

Nøgleord

Andre undersøgelses-id-numre

  • 2508001761

Plan for individuelle deltagerdata (IPD)

Planlægger du at dele individuelle deltagerdata (IPD)?

INGEN

IPD-planbeskrivelse

Data may contain identifying information.

Lægemiddel- og udstyrsoplysninger, undersøgelsesdokumenter

Studerer et amerikansk FDA-reguleret lægemiddelprodukt

Ingen

Studerer et amerikansk FDA-reguleret enhedsprodukt

Ja

produkt fremstillet i og eksporteret fra U.S.A.

Ingen

Disse oplysninger blev hentet direkte fra webstedet clinicaltrials.gov uden ændringer. Hvis du har nogen anmodninger om at ændre, fjerne eller opdatere dine undersøgelsesoplysninger, bedes du kontakte register@clinicaltrials.gov. Så snart en ændring er implementeret på clinicaltrials.gov, vil denne også blive opdateret automatisk på vores hjemmeside .

Kliniske forsøg med Amputation

Kliniske forsøg med Powered Prosthesis

Søg i lignende forsøg

Sponsorer og samarbejdspartnere

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Betingelser

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Narkotikainterventioner

Kosttilskud

Sponsor / samarbejdspartnere

Placeringer

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