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WithdrawnNCT00778947HARMONIC001Updated May 17, 2016

Single Centre Study to Compare Harmonic Scalpel to Conventional Diathermy in Free Tissue Transfer Breast Reconstruction

An interventional study of Harmonic Synergy Dissecting Hook (Harmonic Scalpel) and Electrocautery Diathermy in Breast Reconstruction, sponsored by St Andrew's Centre for Plastic Surgery. Withdrawn at 1 site in United Kingdom. Open to female participants aged 18 Years to 80 Years. Per ClinicalTrials.gov, last updated 2016-05-17.

Sponsored by St Andrew's Centre for Plastic Surgery · Not applicable, Interventional, and Supportive care

Why this study was withdrawn
Study abandoned and was never started
Phase
Not applicable
Study type
Interventional
Enrollment
0
Allocation
Randomized
Ages
18 Years to 80 Years
Sex
Female
01

Study summary

The purpose of this single centre study is to evaluate whether the use of Harmonic Synergy Dissecting Hook (Harmonic Scalpel) in breast reconstruction surgery is superior to conventional diathermy in terms of improving ease and speed of perforator dissection, reducing postoperative pain, days of hospital stay and time taken to return to daily activities.

02

Conditions studied

  • Breast Reconstruction

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Keywords

  • Breast Reconstruction
  • Halmonic Scalpel
  • diathermy
  • Free Tissue Transfer
03

In context

Hyperthermia

478 studies on the registry are indexed under Hyperthermia; 92 are open to participants now.

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Lead sponsor

This is the only study on the registry with St Andrew's Centre for Plastic Surgery as lead sponsor.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
18 Years to 80 Years
Sexes eligible
Female
Accepts healthy volunteers
No

Inclusion criteria

  1. Female patients aged between 18 and 80 years old
  2. Able to comprehend, follow, and provide written informed consent.
  3. Willingness to comply with study requirements including follow-up visits

Exclusion criteria

Exclusion Criteria:

  1. Patients who have a pacemaker
  2. Pregnant or breast feeding females.
  3. General contraindication for surgery as deemed by the PI (e.g. physically unfit)
  4. Patients who smoke
  5. Diabetic patients
  6. Patients who are receiving permanent analgesics
  7. Patients receiving anti-coagulation therapy.
  8. Patients with a physical or psychological condition which would impair participation in the study.
  9. Participation in any other device or drug study within 90 days prior to enrollment.
  10. Planned participation in any other medical device study during the timeframe of this study.
05

Study design

Phase
Not applicable
Primary purpose
Supportive care
Allocation
Randomized
Intervention model
Parallel assignment
Masking
Single (Participant)
Enrollment
0 participants (actual)

Study arms

  • Active comparator
    1

    Procedure: Harmonic Synergy Dissecting Hook (Harmonic Scalpel)

  • Active comparator
    2

    Procedure: Electrocautery Diathermy

Interventions

  • ProcedureHarmonic Synergy Dissecting Hook (Harmonic Scalpel)

    Harmonic Synergy Dissecting Hook (Harmonic Scalpel) uses ultrasound waves to coagulate and cut in surgery. It is available on the market, holds a CE mark and is coded as a Class IIb medical device.

  • ProcedureElectrocautery Diathermy

    Electrosurgery uses high temperatures (150-400oC) and causes obliterative coagulation. Diathermy is the use of high frequency electric current to produce heat. In surgery it is used to cut or destroy tissue and/or to produce coagulation. The electrical frequency produced in diathermy is in the range of 300kHz to 3MHz.

06

What researchers measure

Primary outcomes

  1. The speed of flap harvest measured as the time from "knife to skin" to the flap being removed from the patient.

    Time frame: At surgery

Secondary outcomes

  1. Ease of flap harvest: the subjective opinion of the surgeon based on structured questionnaire

    Time frame: At surgery

  2. Post operative pain, based on the visual analogue scale at 3, 6, 12 and 24 weeks post operatively.

    Time frame: 3, 6, 12 and 24 weeks post operation

  3. Rates of post operative infection

    Time frame: post operation for 6 months

  4. Incidence of abdominal (donor site) wound dehiscence

    Time frame: post operation for 6 months

  5. Bleeding complications

    Time frame: intra operation and for 6 months post op

  6. Return to theatre

    Time frame: post operation for 6 months

  7. Incidence of seroma

    Time frame: post operation for 6 months

  8. Post operative drainage from the wound

    Time frame: post operation for 6 months

  9. Impact on daily activities (SF-36 Questionnaire) at 3, 6, 12 and 24 weeks post operatively

    Time frame: 3, 6, 12, and 24 weeks post operation

  10. Number of days of hospitalisation

    Time frame: post operation for 6 months

  11. Re-operation required

    Time frame: post operation for 6 months

07

Study locations

1 site
  • St. Andrew's Centre for Plastic Surgery, Broomfield Hospital,
    Chelmsford, United Kingdom
08

Updates

Tracking since Sep 25, 2026
No changes since tracking began. The registry record was last updated on May 17, 2016, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
09

Registry details

Key details

Study ID
NCT00778947
Lead sponsor
St Andrew's Centre for Plastic Surgery
First posted
Oct 24, 2008
Start date
Nov 2008
Primary completion
Sep 2009 (estimated)
Last update
May 17, 2016

Study contacts

V Ramakrishnan
principal investigator · St Andrew's Centre for Plastic Surgery
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is withdrawn, as verified in Oct 2008. You cannot join it, but the record below documents what was studied.

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