16 | Espire Elbow Technical Manual - Classic Plus, Classic and Basic
Espire Elbow Technical Manual - Classic Plus, Classic and Basic | 17
6.4 Determining Proper Orientation on Test
Socket
The lamination collar attachment to the socket must provide a
clinically acceptable measurement from centre axis of shoulder
to centre axis of elbow. The appropriate elbow carry angle must
also be established, preferably for full extension.
1. Test the collar orientation by placing it under the user’s
test socket with the orientation line facing posterior. It
may be necessary to extend the collar away from the
socket to establish the correct elbow position. Mark where
the collar contacts the socket or extension material.
2. Remove the clamp ring from the lamination collar and
elbow.
3. Temporarily attach the collar to test socket using
fibreglass tape, epoxy or other adhesive. Clean any
residue from the collar surface at the elbow attachment
point.
4. Re-attach the elbow to the lamination collar and test
socket. Rotate the forearm clockwise and anti-clockwise
and verify the stop positions at 100° from centre (see
section 6.2). Rotate the collar accordingly to adjust the
amount of internal or external rotation.
5. Temporarily fit the arm to the user, verify that the
position, carry angle, and elbow centre are appropriate.
Record the data.
6. Create a new mould for the definitive socket. Transfer the
measurements and position from the test socket.
7. Fabricate the definitive socket with sensors and applicable
prosthetic materials.
SECTION 7 -
MANUAL LOCK
7.1 Manual Lock Overview
The Espire features a mechanical locking mechanism that
can be locked or unlocked while under load, with a maximum
support of 25lbs/11kg.
The manual lock cable is attached to the upper elbow assembly,
near the midline. The lock can be engaged/disengaged every
10° (13 positions). A strain-relief is included to reduce the
likeliness of damage due to excessive pull on the lock cable.
The lock cable can be used with or without the Steeper Harness
System. Attach the cable to a harness using your preferred
mounting method. The cable may be shortened, but do not
remove it completely.
For further details on the Steeper Harness System please view
the Steeper Upper Limb Catalogue.
Caution: Complete removal of the manual lock cable
can lead to malfunction and injury to the user.
Note: The manual lock is not removable or field-
serviceable. Do not attempt to disassemble or modify
the unit.
7.2 Operating Manual Lock
Pull on the lock cable to
engage/disengage the
lock. Lock response will
vary by the amount of
force applied.
Standard Lock-
Unlock
A strong cable pull (clicking sound)
disengages or re-engages the lock.
Temporary Unlock
A light cable pull (no click) unlocks the
elbow joint temporarily. Relieving the
cable tension re-engages the lock.
Info: For more information on lamination, see Espire
Elbow Fabrication Instructions.
6.5 Final Adjustment with the User
The humeral rotation is adjusted with a 2.5mm hex key that
is supplied with the clamp ring. While the user is wearing the
prosthesis, adjust the friction until it is most comfortable. This
friction can be adjusted as needed.
Note: Over tightening this screw may damage the
screw threads. Use small, controlled adjustments until
the desired amount of friction is reached.
