New design rigid and soft vacuum extractor cups: a preliminary comparison of traction forces

G. JUSTUS HOFMEYR*, LAWRENCE GOBETZ, ERNST W W SONNENDECKER, MARTIN J. TURNER

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

Summary. Women due for vacuum extraction were randomly allocated to delivery using one of two soft cups (Silc or Silastic) or two new design rigid cups (New Bird or O'Neil). Traction forces were recorded continuously and higher values were reached with the rigid than the soft cups (median 15.8, range 7.5.19.7 vs 11.1, 7.2.15.1 kg, P < 0.01). Selection of the most appropriate vacuum cup for each clinical situation should take into account that the flexible cups are associated with less cosmetic disfigurcment but have a lower capacity for traction.

Original languageEnglish
Pages (from-to)681-685
Number of pages5
JournalBritish Journal of Obstetrics and Gynaecology
Volume97
Issue number8
DOIs
Publication statusPublished - 1990
Externally publishedYes

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