title: A device that measures the pulling force and vector of delivering a baby.
abstract: OBJECTIVE
  I sought to demonstrate a new device that measures the pulling on an infant during a vaginal delivery.
  
  
  METHODS
  The Peisner Platform (US Patent 6,684,165; Canadian patent 2,436,154) utilizes Newton's Third Law to measure the force/vector of delivering a baby. Ten patients at term with a singleton fetus in the vertex presentation were recruited for this pilot study. The platform measured the forces/vectors on the fetal head during the delivery. The primary outcomes were the graphs of the force/vector on the fetus and duration of that force.
  
  
  RESULTS
  The pulling force exerted on the fetus ranged from 31.7-135.4 N over 8-51 seconds. Force vectors were often negative early, and positive later.
  
  
  CONCLUSIONS
  This new device, which measures the pulling force and vector of delivering a baby, has been successfully demonstrated.
authors.affiliation: Department of Obstetrics and Gynecology, Penn State College of Medicine, Hershey, PA, USA. peisnerd@alumni.caltech.edu
authors.forename: David B
authors.initials: DB
authors.lastname: Peisner
mesh_terms: D000328:Adult; D036861:Delivery, Obstetric / Q000379:methods*; D005260:Female; D006801:Humans; D010865:Pilot Projects