Puritan Bennett Lp6+ Lp10 VentilatorPuritan Bennett Lp6+ Lp10 Ventilator Condition: Pre owned The Aequitron LP 10 is a portable volume ventilator manufactured by Nellcor Puritan Bennett (now Mallinckrodt). It is similar in appearance and function to the Aequitron LP 6+, both having event indicators which monitor patient pressure, breathing effort, power source, and alarms. The LP 10 has an additional pressure limit control feature which permits it to be used for pediatric applications.