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Feasibility and safety of a new device (Odon device) for assisted vaginal deliveries

In pregnant women, is the use of the Odon device during the second stage of labour feasible and safe for maternal and perinatal outcomes?

Status
Terminated
Phases
Unknown
Study type
Interventional
Source
ANZCTR
Registry ID
ACTRN12613000141741
Enrollment
49
Registered
2013-02-06
Start date
2011-03-01
Completion date
2017-06-19
Last updated
2020-01-13

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

Conditions

None listed

Brief summary

Intrapartum complications are responsible for approximately half of all maternal deaths and two million stillbirth and neonatal deaths per year. Prolonged second stage of labor is associated with potentially fatal maternal complications and is a major cause of stillbirth and newborn morbidity and mortality. Currently, the three main options for managing prolonged second stage of labor are cesarean section, forceps and vacuum extractor. All three clinical practices require relatively expensive equipment, highly trained staff that are often not available in low resource settings and, even if available, their use is associated with increased maternal and perinatal complications. The specific aim of the proposed study is to test the safety and feasibility of a new device (Odon Device) to deliver the fetus during prolonged second stage of labor. The Odon device is a low cost, easy to use technological innovation to facilitate operative vaginal delivery and designed to minimize trauma to the mother and baby. This device may be potentially safer and easier to apply than forceps/vacuum extractor for assisted deliveries, and a safe alternative to some caesarean sections. If proven safe and effective, the Odon Device will be the first innovation in operative vaginal delivery since the independent development of forceps and the vacuum extractor centuries ago. The Odon device could play a major role in improving intrapartum obstetric care in low resource settings by making possible effective management of intrapartum complications in facilities lacking surgical capacity and/or personnel adequately trained in the use of forceps and the vacuum extractor.

Interventions

New device (Odon Device) to deliver the fetus. The Odon device is technological innovation to facilitate operative vaginal delivery. The Odon Device is made of two main components: a plastic sleeve and an inserter. The sleeve is made of flexible polyethylene, with an internal fold in contact with the fetal head and the external fold in contact with the vaginal wall.. The inserter consists of a handle with four pronged flexible spatulas that slide around the fetal head and help to position the sl

New device (Odon Device) to deliver the fetus. The Odon device is technological innovation to facilitate operative vaginal delivery. The Odon Device is made of two main components: a plastic sleeve and an inserter. The sleeve is made of flexible polyethylene, with an internal fold in contact with the fetal head and the external fold in contact with the vaginal wall.. The inserter consists of a handle with four pronged flexible spatulas that slide around the fetal head and help to position the sleeve The device will be applied to women without labour complications under non-emergency/normal delivery conditions. The device is applied on second stage of labour (i.e. cervix fully dilated) and on a station level equivalent to 2 cm or more below the spines.

Sponsors

World Health Organization
Lead SponsorOther

Study design

Allocation
Non-randomised trial
Primary purpose
Treatment

Eligibility

Sex/Gender
All
Age
18 Years to 35 Years
Healthy volunteers
Yes

Inclusion criteria

- Age more or equal to 18 years, and less or equal 35 years - Singleton pregnancy - Gestational age equal to or more than 37 weeks - Live fetus - Fully dilated cervix - Membranes ruptured (spontaneous or artificial). - Any anterior occiput presentation. - Station level equivalent to 2 cm or more below the spines - Fetal Heart Rate Pattern recorded by continuous fetal electronic monitoring meeting the following criteria: (i) stable baseline rate between 110 and 160 beats/min, (ii) normal short and long term variability, (iii) absence of late decelerations.

Exclusion criteria

- Suspected or confirmed maternal infection - Prolonged rupture of membranes (>24 hours) - Meconium stained - History of coagulation disorder - Previous uterine surgery - Intrapartum hemorrhage - Absolute cephalopelvic disproportion - Known recto-vaginal Streptoccocus B Haemolyticcus positive culture - Known HIV positive women

Outcome results

None listed

Source: ANZCTR · Data processed: Mar 23, 2026