"Hissing"
Warren Mays
Description
Collection
Title:
"Hissing"
Creator:
Warren Mays
Date:
6/17/2008
Text:
Hello Again,
Original question:
What have you found to be the most successful way to reduce the hissing
noise associated with an AK lanyard system? Do larger and/or more exhaust
holes in the bottom of the socket make it better or worse?
Responses, in order of receipt:
-I give my patients with lanyards Ipod Shuffles. Use L5999 and bill for
personal microprocessor controlled socket evacuation noise reduction system,
heavy duty, with rechargeable lithium Ion Batteries, charger not included.
-What type of lanyard system are you using?
-You may want to create a channel right below the gluteal fold to better
suspend the prosthesis. That way you can reduce the pistoning.
-The hissing is the result of pistoning. Prevent the pistoning and you'll
have no more hissing. More or larger holes will exacerbate the problem.
-Drill with a 1 hole saw in the posterior/distal aspect of socket.
Problem solved.
-If it is an OWW lanyard, make sure you have adequate distal contact so that
the O-ring seals against the lock body.
-Try a single ply or a sheath over the liner.
-In my experience larger holes make it better ,just be care full that you
don't compromise the stability of the lamination
Thank you to all who responded. I really liked the Ipod idea. Clearly the
easiest solution.
Not much consensus on the hole issue. I did like the comment about
pistoning.
Another question for you: When you guys are doing lanyard-style sockets, are
you doing ischial bearing or ischial containment? Also, do you feel that
pistoning is a given with lanyard systems?
Thank you for your time,
Warren R Mays, CPO
PS: The Hissing Kitty response did not merit posting.
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Original question:
What have you found to be the most successful way to reduce the hissing
noise associated with an AK lanyard system? Do larger and/or more exhaust
holes in the bottom of the socket make it better or worse?
Responses, in order of receipt:
-I give my patients with lanyards Ipod Shuffles. Use L5999 and bill for
personal microprocessor controlled socket evacuation noise reduction system,
heavy duty, with rechargeable lithium Ion Batteries, charger not included.
-What type of lanyard system are you using?
-You may want to create a channel right below the gluteal fold to better
suspend the prosthesis. That way you can reduce the pistoning.
-The hissing is the result of pistoning. Prevent the pistoning and you'll
have no more hissing. More or larger holes will exacerbate the problem.
-Drill with a 1 hole saw in the posterior/distal aspect of socket.
Problem solved.
-If it is an OWW lanyard, make sure you have adequate distal contact so that
the O-ring seals against the lock body.
-Try a single ply or a sheath over the liner.
-In my experience larger holes make it better ,just be care full that you
don't compromise the stability of the lamination
Thank you to all who responded. I really liked the Ipod idea. Clearly the
easiest solution.
Not much consensus on the hole issue. I did like the comment about
pistoning.
Another question for you: When you guys are doing lanyard-style sockets, are
you doing ischial bearing or ischial containment? Also, do you feel that
pistoning is a given with lanyard systems?
Thank you for your time,
Warren R Mays, CPO
PS: The Hissing Kitty response did not merit posting.
********************
To unsubscribe, send a message to: <Email Address Redacted> with
the words UNSUB OANDP-L in the body of the
message.
If you have a problem unsubscribing,or have other
questions, send e-mail to the moderator
Paul E. Prusakowski,CPO at <Email Address Redacted>
OANDP-L is a forum for the discussion of topics
related to Orthotics and Prosthetics.
Public commercial postings are forbidden. Responses to inquiries
should not be sent to the entire oandp-l list. Professional credentials
or affiliations should be used in all communications.
Citation
Warren Mays, “"Hissing",” Digital Resource Foundation for Orthotics and Prosthetics, accessed May 18, 2024, https://library.drfop.org/items/show/229364.
