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PURCELL PRUSIK TIE-IN

Three Purcell Prusiks
can be quickly
employed to secure a
subject wearing a
harness from
movement along the
long axis of a litter
(Figure 236). The initial
foundation for this
secure tie-in employs
two Purcell Prusiks run
through the subject’s
harness belay loop
form. These are
inversely secured from
one another to the litter
in order to restrain
subject movement
toward the head or foot
ends of the litter. The
Purcells are easily

adjusted once in place Figure 236- Patient packaging with Purcell Prusiks. This provides an
to tension the expedient technique for packaging a patient wearing a harness.
attachments. A third
Purcell is used to provide support to the feet.

Alternate Webbing Method: Webbing runners can be employed in place of the Purcell
Prusiks. Separate webbing runners are girth hitched at their mid-points to the harness
belay loop. One runner is rigged toward the head and the other down toward the feet.
Secure one end of each runner to an outside litter rail after cinching it tight with tension.
A Clove Hitch or Round Turn with Half Hitches works well for this application. Use a
Trucker’s Hitch to tension and secure the other end of each runner around a litter rail on
the opposite side of the litter.

These patient tie-in procedures must be finished off with several lateral cross-ties to
provide a complete and secure system. The numerous lateral cross-ties must suitably
anchor the patient to prevent lateral movement or ejection.

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